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authorSteve French <stfrench@microsoft.com>2023-05-21 20:46:30 -0500
committerSteve French <stfrench@microsoft.com>2023-05-24 16:29:21 -0500
commit38c8a9a52082579090e34c033d439ed2cd1a462d (patch)
treeca6c3bf5b2b912f32735c1aa0a045cd21a47a205 /fs/cifs/cifssmb.c
parentcb8b02fd6343228966324528adf920bfb8b8e681 (diff)
smb: move client and server files to common directory fs/smb
Move CIFS/SMB3 related client and server files (cifs.ko and ksmbd.ko and helper modules) to new fs/smb subdirectory: fs/cifs --> fs/smb/client fs/ksmbd --> fs/smb/server fs/smbfs_common --> fs/smb/common Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/cifssmb.c')
-rw-r--r--fs/cifs/cifssmb.c5936
1 files changed, 0 insertions, 5936 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
deleted file mode 100644
index 9d963caec35c..000000000000
--- a/fs/cifs/cifssmb.c
+++ /dev/null
@@ -1,5936 +0,0 @@
-// SPDX-License-Identifier: LGPL-2.1
-/*
- *
- * Copyright (C) International Business Machines Corp., 2002,2010
- * Author(s): Steve French (sfrench@us.ibm.com)
- *
- * Contains the routines for constructing the SMB PDUs themselves
- *
- */
-
- /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */
- /* These are mostly routines that operate on a pathname, or on a tree id */
- /* (mounted volume), but there are eight handle based routines which must be */
- /* treated slightly differently for reconnection purposes since we never */
- /* want to reuse a stale file handle and only the caller knows the file info */
-
-#include <linux/fs.h>
-#include <linux/filelock.h>
-#include <linux/kernel.h>
-#include <linux/vfs.h>
-#include <linux/slab.h>
-#include <linux/posix_acl_xattr.h>
-#include <linux/pagemap.h>
-#include <linux/swap.h>
-#include <linux/task_io_accounting_ops.h>
-#include <linux/uaccess.h>
-#include "cifspdu.h"
-#include "cifsfs.h"
-#include "cifsglob.h"
-#include "cifsacl.h"
-#include "cifsproto.h"
-#include "cifs_unicode.h"
-#include "cifs_debug.h"
-#include "fscache.h"
-#include "smbdirect.h"
-#ifdef CONFIG_CIFS_DFS_UPCALL
-#include "dfs_cache.h"
-#endif
-
-#ifdef CONFIG_CIFS_POSIX
-static struct {
- int index;
- char *name;
-} protocols[] = {
- {CIFS_PROT, "\2NT LM 0.12"},
- {POSIX_PROT, "\2POSIX 2"},
- {BAD_PROT, "\2"}
-};
-#else
-static struct {
- int index;
- char *name;
-} protocols[] = {
- {CIFS_PROT, "\2NT LM 0.12"},
- {BAD_PROT, "\2"}
-};
-#endif
-
-/* define the number of elements in the cifs dialect array */
-#ifdef CONFIG_CIFS_POSIX
-#define CIFS_NUM_PROT 2
-#else /* not posix */
-#define CIFS_NUM_PROT 1
-#endif /* CIFS_POSIX */
-
-
-/* reconnect the socket, tcon, and smb session if needed */
-static int
-cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command)
-{
- int rc;
- struct cifs_ses *ses;
- struct TCP_Server_Info *server;
- struct nls_table *nls_codepage = NULL;
-
- /*
- * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for
- * tcp and smb session status done differently for those three - in the
- * calling routine
- */
- if (!tcon)
- return 0;
-
- ses = tcon->ses;
- server = ses->server;
-
- /*
- * only tree disconnect, open, and write, (and ulogoff which does not
- * have tcon) are allowed as we start umount
- */
- spin_lock(&tcon->tc_lock);
- if (tcon->status == TID_EXITING) {
- if (smb_command != SMB_COM_TREE_DISCONNECT) {
- spin_unlock(&tcon->tc_lock);
- cifs_dbg(FYI, "can not send cmd %d while umounting\n",
- smb_command);
- return -ENODEV;
- }
- }
- spin_unlock(&tcon->tc_lock);
-
-again:
- rc = cifs_wait_for_server_reconnect(server, tcon->retry);
- if (rc)
- return rc;
-
- spin_lock(&ses->chan_lock);
- if (!cifs_chan_needs_reconnect(ses, server) && !tcon->need_reconnect) {
- spin_unlock(&ses->chan_lock);
- return 0;
- }
- spin_unlock(&ses->chan_lock);
-
- mutex_lock(&ses->session_mutex);
- /*
- * Recheck after acquire mutex. If another thread is negotiating
- * and the server never sends an answer the socket will be closed
- * and tcpStatus set to reconnect.
- */
- spin_lock(&server->srv_lock);
- if (server->tcpStatus == CifsNeedReconnect) {
- spin_unlock(&server->srv_lock);
- mutex_unlock(&ses->session_mutex);
-
- if (tcon->retry)
- goto again;
- rc = -EHOSTDOWN;
- goto out;
- }
- spin_unlock(&server->srv_lock);
-
- nls_codepage = load_nls_default();
-
- /*
- * need to prevent multiple threads trying to simultaneously
- * reconnect the same SMB session
- */
- spin_lock(&ses->ses_lock);
- spin_lock(&ses->chan_lock);
- if (!cifs_chan_needs_reconnect(ses, server) &&
- ses->ses_status == SES_GOOD) {
- spin_unlock(&ses->chan_lock);
- spin_unlock(&ses->ses_lock);
-
- /* this means that we only need to tree connect */
- if (tcon->need_reconnect)
- goto skip_sess_setup;
-
- mutex_unlock(&ses->session_mutex);
- goto out;
- }
- spin_unlock(&ses->chan_lock);
- spin_unlock(&ses->ses_lock);
-
- rc = cifs_negotiate_protocol(0, ses, server);
- if (!rc)
- rc = cifs_setup_session(0, ses, server, nls_codepage);
-
- /* do we need to reconnect tcon? */
- if (rc || !tcon->need_reconnect) {
- mutex_unlock(&ses->session_mutex);
- goto out;
- }
-
-skip_sess_setup:
- cifs_mark_open_files_invalid(tcon);
- rc = cifs_tree_connect(0, tcon, nls_codepage);
- mutex_unlock(&ses->session_mutex);
- cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc);
-
- if (rc) {
- pr_warn_once("reconnect tcon failed rc = %d\n", rc);
- goto out;
- }
-
- atomic_inc(&tconInfoReconnectCount);
-
- /* tell server Unix caps we support */
- if (cap_unix(ses))
- reset_cifs_unix_caps(0, tcon, NULL, NULL);
-
- /*
- * Removed call to reopen open files here. It is safer (and faster) to
- * reopen files one at a time as needed in read and write.
- *
- * FIXME: what about file locks? don't we need to reclaim them ASAP?
- */
-
-out:
- /*
- * Check if handle based operation so we know whether we can continue
- * or not without returning to caller to reset file handle
- */
- switch (smb_command) {
- case SMB_COM_READ_ANDX:
- case SMB_COM_WRITE_ANDX:
- case SMB_COM_CLOSE:
- case SMB_COM_FIND_CLOSE2:
- case SMB_COM_LOCKING_ANDX:
- rc = -EAGAIN;
- }
-
- unload_nls(nls_codepage);
- return rc;
-}
-
-/* Allocate and return pointer to an SMB request buffer, and set basic
- SMB information in the SMB header. If the return code is zero, this
- function must have filled in request_buf pointer */
-static int
-small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon,
- void **request_buf)
-{
- int rc;
-
- rc = cifs_reconnect_tcon(tcon, smb_command);
- if (rc)
- return rc;
-
- *request_buf = cifs_small_buf_get();
- if (*request_buf == NULL) {
- /* BB should we add a retry in here if not a writepage? */
- return -ENOMEM;
- }
-
- header_assemble((struct smb_hdr *) *request_buf, smb_command,
- tcon, wct);
-
- if (tcon != NULL)
- cifs_stats_inc(&tcon->num_smbs_sent);
-
- return 0;
-}
-
-int
-small_smb_init_no_tc(const int smb_command, const int wct,
- struct cifs_ses *ses, void **request_buf)
-{
- int rc;
- struct smb_hdr *buffer;
-
- rc = small_smb_init(smb_command, wct, NULL, request_buf);
- if (rc)
- return rc;
-
- buffer = (struct smb_hdr *)*request_buf;
- buffer->Mid = get_next_mid(ses->server);
- if (ses->capabilities & CAP_UNICODE)
- buffer->Flags2 |= SMBFLG2_UNICODE;
- if (ses->capabilities & CAP_STATUS32)
- buffer->Flags2 |= SMBFLG2_ERR_STATUS;
-
- /* uid, tid can stay at zero as set in header assemble */
-
- /* BB add support for turning on the signing when
- this function is used after 1st of session setup requests */
-
- return rc;
-}
-
-/* If the return code is zero, this function must fill in request_buf pointer */
-static int
-__smb_init(int smb_command, int wct, struct cifs_tcon *tcon,
- void **request_buf, void **response_buf)
-{
- *request_buf = cifs_buf_get();
- if (*request_buf == NULL) {
- /* BB should we add a retry in here if not a writepage? */
- return -ENOMEM;
- }
- /* Although the original thought was we needed the response buf for */
- /* potential retries of smb operations it turns out we can determine */
- /* from the mid flags when the request buffer can be resent without */
- /* having to use a second distinct buffer for the response */
- if (response_buf)
- *response_buf = *request_buf;
-
- header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,
- wct);
-
- if (tcon != NULL)
- cifs_stats_inc(&tcon->num_smbs_sent);
-
- return 0;
-}
-
-/* If the return code is zero, this function must fill in request_buf pointer */
-static int
-smb_init(int smb_command, int wct, struct cifs_tcon *tcon,
- void **request_buf, void **response_buf)
-{
- int rc;
-
- rc = cifs_reconnect_tcon(tcon, smb_command);
- if (rc)
- return rc;
-
- return __smb_init(smb_command, wct, tcon, request_buf, response_buf);
-}
-
-static int
-smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon,
- void **request_buf, void **response_buf)
-{
- spin_lock(&tcon->ses->chan_lock);
- if (cifs_chan_needs_reconnect(tcon->ses, tcon->ses->server) ||
- tcon->need_reconnect) {
- spin_unlock(&tcon->ses->chan_lock);
- return -EHOSTDOWN;
- }
- spin_unlock(&tcon->ses->chan_lock);
-
- return __smb_init(smb_command, wct, tcon, request_buf, response_buf);
-}
-
-static int validate_t2(struct smb_t2_rsp *pSMB)
-{
- unsigned int total_size;
-
- /* check for plausible wct */
- if (pSMB->hdr.WordCount < 10)
- goto vt2_err;
-
- /* check for parm and data offset going beyond end of smb */
- if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 ||
- get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024)
- goto vt2_err;
-
- total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount);
- if (total_size >= 512)
- goto vt2_err;
-
- /* check that bcc is at least as big as parms + data, and that it is
- * less than negotiated smb buffer
- */
- total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount);
- if (total_size > get_bcc(&pSMB->hdr) ||
- total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE)
- goto vt2_err;
-
- return 0;
-vt2_err:
- cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB,
- sizeof(struct smb_t2_rsp) + 16);
- return -EINVAL;
-}
-
-static int
-decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr)
-{
- int rc = 0;
- u16 count;
- char *guid = pSMBr->u.extended_response.GUID;
- struct TCP_Server_Info *server = ses->server;
-
- count = get_bcc(&pSMBr->hdr);
- if (count < SMB1_CLIENT_GUID_SIZE)
- return -EIO;
-
- spin_lock(&cifs_tcp_ses_lock);
- if (server->srv_count > 1) {
- spin_unlock(&cifs_tcp_ses_lock);
- if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) {
- cifs_dbg(FYI, "server UID changed\n");
- memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE);
- }
- } else {
- spin_unlock(&cifs_tcp_ses_lock);
- memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE);
- }
-
- if (count == SMB1_CLIENT_GUID_SIZE) {
- server->sec_ntlmssp = true;
- } else {
- count -= SMB1_CLIENT_GUID_SIZE;
- rc = decode_negTokenInit(
- pSMBr->u.extended_response.SecurityBlob, count, server);
- if (rc != 1)
- return -EINVAL;
- }
-
- return 0;
-}
-
-static bool
-should_set_ext_sec_flag(enum securityEnum sectype)
-{
- switch (sectype) {
- case RawNTLMSSP:
- case Kerberos:
- return true;
- case Unspecified:
- if (global_secflags &
- (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP))
- return true;
- fallthrough;
- default:
- return false;
- }
-}
-
-int
-CIFSSMBNegotiate(const unsigned int xid,
- struct cifs_ses *ses,
- struct TCP_Server_Info *server)
-{
- NEGOTIATE_REQ *pSMB;
- NEGOTIATE_RSP *pSMBr;
- int rc = 0;
- int bytes_returned;
- int i;
- u16 count;
-
- if (!server) {
- WARN(1, "%s: server is NULL!\n", __func__);
- return -EIO;
- }
-
- rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ ,
- (void **) &pSMB, (void **) &pSMBr);
- if (rc)
- return rc;
-
- pSMB->hdr.Mid = get_next_mid(server);
- pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS);
-
- if (should_set_ext_sec_flag(ses->sectype)) {
- cifs_dbg(FYI, "Requesting extended security\n");
- pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
- }
-
- count = 0;
- /*
- * We know that all the name entries in the protocols array
- * are short (< 16 bytes anyway) and are NUL terminated.
- */
- for (i = 0; i < CIFS_NUM_PROT; i++) {
- size_t len = strlen(protocols[i].name) + 1;
-
- memcpy(&pSMB->DialectsArray[count], protocols[i].name, len);
- count += len;
- }
- inc_rfc1001_len(pSMB, count);
- pSMB->ByteCount = cpu_to_le16(count);
-
- rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc != 0)
- goto neg_err_exit;
-
- server->dialect = le16_to_cpu(pSMBr->DialectIndex);
- cifs_dbg(FYI, "Dialect: %d\n", server->dialect);
- /* Check wct = 1 error case */
- if ((pSMBr->hdr.WordCount <= 13) || (server->dialect == BAD_PROT)) {
- /* core returns wct = 1, but we do not ask for core - otherwise
- small wct just comes when dialect index is -1 indicating we
- could not negotiate a common dialect */
- rc = -EOPNOTSUPP;
- goto neg_err_exit;
- } else if (pSMBr->hdr.WordCount != 17) {
- /* unknown wct */
- rc = -EOPNOTSUPP;
- goto neg_err_exit;
- }
- /* else wct == 17, NTLM or better */
-
- server->sec_mode = pSMBr->SecurityMode;
- if ((server->sec_mode & SECMODE_USER) == 0)
- cifs_dbg(FYI, "share mode security\n");
-
- /* one byte, so no need to convert this or EncryptionKeyLen from
- little endian */
- server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount),
- cifs_max_pending);
- set_credits(server, server->maxReq);
- /* probably no need to store and check maxvcs */
- server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize);
- /* set up max_read for readahead check */
- server->max_read = server->maxBuf;
- server->max_rw = le32_to_cpu(pSMBr->MaxRawSize);
- cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf);
- server->capabilities = le32_to_cpu(pSMBr->Capabilities);
- server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone);
- server->timeAdj *= 60;
-
- if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
- server->negflavor = CIFS_NEGFLAVOR_UNENCAP;
- memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey,
- CIFS_CRYPTO_KEY_SIZE);
- } else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC ||
- server->capabilities & CAP_EXTENDED_SECURITY) {
- server->negflavor = CIFS_NEGFLAVOR_EXTENDED;
- rc = decode_ext_sec_blob(ses, pSMBr);
- } else if (server->sec_mode & SECMODE_PW_ENCRYPT) {
- rc = -EIO; /* no crypt key only if plain text pwd */
- } else {
- server->negflavor = CIFS_NEGFLAVOR_UNENCAP;
- server->capabilities &= ~CAP_EXTENDED_SECURITY;
- }
-
- if (!rc)
- rc = cifs_enable_signing(server, ses->sign);
-neg_err_exit:
- cifs_buf_release(pSMB);
-
- cifs_dbg(FYI, "negprot rc %d\n", rc);
- return rc;
-}
-
-int
-CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon)
-{
- struct smb_hdr *smb_buffer;
- int rc = 0;
-
- cifs_dbg(FYI, "In tree disconnect\n");
-
- /* BB: do we need to check this? These should never be NULL. */
- if ((tcon->ses == NULL) || (tcon->ses->server == NULL))
- return -EIO;
-
- /*
- * No need to return error on this operation if tid invalidated and
- * closed on server already e.g. due to tcp session crashing. Also,
- * the tcon is no longer on the list, so no need to take lock before
- * checking this.
- */
- spin_lock(&tcon->ses->chan_lock);
- if ((tcon->need_reconnect) || CIFS_ALL_CHANS_NEED_RECONNECT(tcon->ses)) {
- spin_unlock(&tcon->ses->chan_lock);
- return -EIO;
- }
- spin_unlock(&tcon->ses->chan_lock);
-
- rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon,
- (void **)&smb_buffer);
- if (rc)
- return rc;
-
- rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0);
- cifs_small_buf_release(smb_buffer);
- if (rc)
- cifs_dbg(FYI, "Tree disconnect failed %d\n", rc);
-
- /* No need to return error on this operation if tid invalidated and
- closed on server already e.g. due to tcp session crashing */
- if (rc == -EAGAIN)
- rc = 0;
-
- return rc;
-}
-
-/*
- * This is a no-op for now. We're not really interested in the reply, but
- * rather in the fact that the server sent one and that server->lstrp
- * gets updated.
- *
- * FIXME: maybe we should consider checking that the reply matches request?
- */
-static void
-cifs_echo_callback(struct mid_q_entry *mid)
-{
- struct TCP_Server_Info *server = mid->callback_data;
- struct cifs_credits credits = { .value = 1, .instance = 0 };
-
- release_mid(mid);
- add_credits(server, &credits, CIFS_ECHO_OP);
-}
-
-int
-CIFSSMBEcho(struct TCP_Server_Info *server)
-{
- ECHO_REQ *smb;
- int rc = 0;
- struct kvec iov[2];
- struct smb_rqst rqst = { .rq_iov = iov,
- .rq_nvec = 2 };
-
- cifs_dbg(FYI, "In echo request\n");
-
- rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb);
- if (rc)
- return rc;
-
- if (server->capabilities & CAP_UNICODE)
- smb->hdr.Flags2 |= SMBFLG2_UNICODE;
-
- /* set up echo request */
- smb->hdr.Tid = 0xffff;
- smb->hdr.WordCount = 1;
- put_unaligned_le16(1, &smb->EchoCount);
- put_bcc(1, &smb->hdr);
- smb->Data[0] = 'a';
- inc_rfc1001_len(smb, 3);
-
- iov[0].iov_len = 4;
- iov[0].iov_base = smb;
- iov[1].iov_len = get_rfc1002_length(smb);
- iov[1].iov_base = (char *)smb + 4;
-
- rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL,
- server, CIFS_NON_BLOCKING | CIFS_ECHO_OP, NULL);
- if (rc)
- cifs_dbg(FYI, "Echo request failed: %d\n", rc);
-
- cifs_small_buf_release(smb);
-
- return rc;
-}
-
-int
-CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses)
-{
- LOGOFF_ANDX_REQ *pSMB;
- int rc = 0;
-
- cifs_dbg(FYI, "In SMBLogoff for session disconnect\n");
-
- /*
- * BB: do we need to check validity of ses and server? They should
- * always be valid since we have an active reference. If not, that
- * should probably be a BUG()
- */
- if (!ses || !ses->server)
- return -EIO;
-
- mutex_lock(&ses->session_mutex);
- spin_lock(&ses->chan_lock);
- if (CIFS_ALL_CHANS_NEED_RECONNECT(ses)) {
- spin_unlock(&ses->chan_lock);
- goto session_already_dead; /* no need to send SMBlogoff if uid
- already closed due to reconnect */
- }
- spin_unlock(&ses->chan_lock);
-
- rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB);
- if (rc) {
- mutex_unlock(&ses->session_mutex);
- return rc;
- }
-
- pSMB->hdr.Mid = get_next_mid(ses->server);
-
- if (ses->server->sign)
- pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
-
- pSMB->hdr.Uid = ses->Suid;
-
- pSMB->AndXCommand = 0xFF;
- rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0);
- cifs_small_buf_release(pSMB);
-session_already_dead:
- mutex_unlock(&ses->session_mutex);
-
- /* if session dead then we do not need to do ulogoff,
- since server closed smb session, no sense reporting
- error */
- if (rc == -EAGAIN)
- rc = 0;
- return rc;
-}
-
-int
-CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
- const char *fileName, __u16 type,
- const struct nls_table *nls_codepage, int remap)
-{
- TRANSACTION2_SPI_REQ *pSMB = NULL;
- TRANSACTION2_SPI_RSP *pSMBr = NULL;
- struct unlink_psx_rq *pRqD;
- int name_len;
- int rc = 0;
- int bytes_returned = 0;
- __u16 params, param_offset, offset, byte_count;
-
- cifs_dbg(FYI, "In POSIX delete\n");
-PsxDelete:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
- PATH_MAX, nls_codepage, remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- name_len = copy_path_name(pSMB->FileName, fileName);
- }
-
- params = 6 + name_len;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- pSMB->MaxDataCount = 0; /* BB double check this with jra */
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_spi_req,
- InformationLevel) - 4;
- offset = param_offset + params;
-
- /* Setup pointer to Request Data (inode type).
- * Note that SMB offsets are from the beginning of SMB which is 4 bytes
- * in, after RFC1001 field
- */
- pRqD = (struct unlink_psx_rq *)((char *)(pSMB) + offset + 4);
- pRqD->type = cpu_to_le16(type);
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
- pSMB->DataOffset = cpu_to_le16(offset);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
- byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq);
-
- pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq));
- pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq));
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc)
- cifs_dbg(FYI, "Posix delete returned %d\n", rc);
- cifs_buf_release(pSMB);
-
- cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes);
-
- if (rc == -EAGAIN)
- goto PsxDelete;
-
- return rc;
-}
-
-int
-CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
- struct cifs_sb_info *cifs_sb)
-{
- DELETE_FILE_REQ *pSMB = NULL;
- DELETE_FILE_RSP *pSMBr = NULL;
- int rc = 0;
- int bytes_returned;
- int name_len;
- int remap = cifs_remap(cifs_sb);
-
-DelFileRetry:
- rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name,
- PATH_MAX, cifs_sb->local_nls,
- remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- name_len = copy_path_name(pSMB->fileName, name);
- }
- pSMB->SearchAttributes =
- cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM);
- pSMB->BufferFormat = 0x04;
- inc_rfc1001_len(pSMB, name_len + 1);
- pSMB->ByteCount = cpu_to_le16(name_len + 1);
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes);
- if (rc)
- cifs_dbg(FYI, "Error in RMFile = %d\n", rc);
-
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto DelFileRetry;
-
- return rc;
-}
-
-int
-CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
- struct cifs_sb_info *cifs_sb)
-{
- DELETE_DIRECTORY_REQ *pSMB = NULL;
- DELETE_DIRECTORY_RSP *pSMBr = NULL;
- int rc = 0;
- int bytes_returned;
- int name_len;
- int remap = cifs_remap(cifs_sb);
-
- cifs_dbg(FYI, "In CIFSSMBRmDir\n");
-RmDirRetry:
- rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name,
- PATH_MAX, cifs_sb->local_nls,
- remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- name_len = copy_path_name(pSMB->DirName, name);
- }
-
- pSMB->BufferFormat = 0x04;
- inc_rfc1001_len(pSMB, name_len + 1);
- pSMB->ByteCount = cpu_to_le16(name_len + 1);
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs);
- if (rc)
- cifs_dbg(FYI, "Error in RMDir = %d\n", rc);
-
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto RmDirRetry;
- return rc;
-}
-
-int
-CIFSSMBMkDir(const unsigned int xid, struct inode *inode, umode_t mode,
- struct cifs_tcon *tcon, const char *name,
- struct cifs_sb_info *cifs_sb)
-{
- int rc = 0;
- CREATE_DIRECTORY_REQ *pSMB = NULL;
- CREATE_DIRECTORY_RSP *pSMBr = NULL;
- int bytes_returned;
- int name_len;
- int remap = cifs_remap(cifs_sb);
-
- cifs_dbg(FYI, "In CIFSSMBMkDir\n");
-MkDirRetry:
- rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name,
- PATH_MAX, cifs_sb->local_nls,
- remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- name_len = copy_path_name(pSMB->DirName, name);
- }
-
- pSMB->BufferFormat = 0x04;
- inc_rfc1001_len(pSMB, name_len + 1);
- pSMB->ByteCount = cpu_to_le16(name_len + 1);
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs);
- if (rc)
- cifs_dbg(FYI, "Error in Mkdir = %d\n", rc);
-
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto MkDirRetry;
- return rc;
-}
-
-int
-CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
- __u32 posix_flags, __u64 mode, __u16 *netfid,
- FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock,
- const char *name, const struct nls_table *nls_codepage,
- int remap)
-{
- TRANSACTION2_SPI_REQ *pSMB = NULL;
- TRANSACTION2_SPI_RSP *pSMBr = NULL;
- int name_len;
- int rc = 0;
- int bytes_returned = 0;
- __u16 params, param_offset, offset, byte_count, count;
- OPEN_PSX_REQ *pdata;
- OPEN_PSX_RSP *psx_rsp;
-
- cifs_dbg(FYI, "In POSIX Create\n");
-PsxCreat:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName, name,
- PATH_MAX, nls_codepage, remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- name_len = copy_path_name(pSMB->FileName, name);
- }
-
- params = 6 + name_len;
- count = sizeof(OPEN_PSX_REQ);
- pSMB->MaxParameterCount = cpu_to_le16(2);
- pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_spi_req,
- InformationLevel) - 4;
- offset = param_offset + params;
- /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */
- pdata = (OPEN_PSX_REQ *)((char *)(pSMB) + offset + 4);
- pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
- pdata->Permissions = cpu_to_le64(mode);
- pdata->PosixOpenFlags = cpu_to_le32(posix_flags);
- pdata->OpenFlags = cpu_to_le32(*pOplock);
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
- pSMB->DataOffset = cpu_to_le16(offset);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
- byte_count = 3 /* pad */ + params + count;
-
- pSMB->DataCount = cpu_to_le16(count);
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "Posix create returned %d\n", rc);
- goto psx_create_err;
- }
-
- cifs_dbg(FYI, "copying inode info\n");
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
-
- if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) {
- rc = -EIO; /* bad smb */
- goto psx_create_err;
- }
-
- /* copy return information to pRetData */
- psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol
- + le16_to_cpu(pSMBr->t2.DataOffset));
-
- *pOplock = le16_to_cpu(psx_rsp->OplockFlags);
- if (netfid)
- *netfid = psx_rsp->Fid; /* cifs fid stays in le */
- /* Let caller know file was created so we can set the mode. */
- /* Do we care about the CreateAction in any other cases? */
- if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction)
- *pOplock |= CIFS_CREATE_ACTION;
- /* check to make sure response data is there */
- if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) {
- pRetData->Type = cpu_to_le32(-1); /* unknown */
- cifs_dbg(NOISY, "unknown type\n");
- } else {
- if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)
- + sizeof(FILE_UNIX_BASIC_INFO)) {
- cifs_dbg(VFS, "Open response data too small\n");
- pRetData->Type = cpu_to_le32(-1);
- goto psx_create_err;
- }
- memcpy((char *) pRetData,
- (char *)psx_rsp + sizeof(OPEN_PSX_RSP),
- sizeof(FILE_UNIX_BASIC_INFO));
- }
-
-psx_create_err:
- cifs_buf_release(pSMB);
-
- if (posix_flags & SMB_O_DIRECTORY)
- cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs);
- else
- cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens);
-
- if (rc == -EAGAIN)
- goto PsxCreat;
-
- return rc;
-}
-
-static __u16 convert_disposition(int disposition)
-{
- __u16 ofun = 0;
-
- switch (disposition) {
- case FILE_SUPERSEDE:
- ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC;
- break;
- case FILE_OPEN:
- ofun = SMBOPEN_OAPPEND;
- break;
- case FILE_CREATE:
- ofun = SMBOPEN_OCREATE;
- break;
- case FILE_OPEN_IF:
- ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND;
- break;
- case FILE_OVERWRITE:
- ofun = SMBOPEN_OTRUNC;
- break;
- case FILE_OVERWRITE_IF:
- ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC;
- break;
- default:
- cifs_dbg(FYI, "unknown disposition %d\n", disposition);
- ofun = SMBOPEN_OAPPEND; /* regular open */
- }
- return ofun;
-}
-
-static int
-access_flags_to_smbopen_mode(const int access_flags)
-{
- int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE);
-
- if (masked_flags == GENERIC_READ)
- return SMBOPEN_READ;
- else if (masked_flags == GENERIC_WRITE)
- return SMBOPEN_WRITE;
-
- /* just go for read/write */
- return SMBOPEN_READWRITE;
-}
-
-int
-SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
- const char *fileName, const int openDisposition,
- const int access_flags, const int create_options, __u16 *netfid,
- int *pOplock, FILE_ALL_INFO *pfile_info,
- const struct nls_table *nls_codepage, int remap)
-{
- int rc;
- OPENX_REQ *pSMB = NULL;
- OPENX_RSP *pSMBr = NULL;
- int bytes_returned;
- int name_len;
- __u16 count;
-
-OldOpenRetry:
- rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- pSMB->AndXCommand = 0xFF; /* none */
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- count = 1; /* account for one byte pad to word boundary */
- name_len =
- cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1),
- fileName, PATH_MAX, nls_codepage, remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- count = 0; /* no pad */
- name_len = copy_path_name(pSMB->fileName, fileName);
- }
- if (*pOplock & REQ_OPLOCK)
- pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK);
- else if (*pOplock & REQ_BATCHOPLOCK)
- pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK);
-
- pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO);
- pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags));
- pSMB->Mode |= cpu_to_le16(0x40); /* deny none */
- /* set file as system file if special file such
- as fifo and server expecting SFU style and
- no Unix extensions */
-
- if (create_options & CREATE_OPTION_SPECIAL)
- pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM);
- else /* BB FIXME BB */
- pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/);
-
- if (create_options & CREATE_OPTION_READONLY)
- pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY);
-
- /* BB FIXME BB */
-/* pSMB->CreateOptions = cpu_to_le32(create_options &
- CREATE_OPTIONS_MASK); */
- /* BB FIXME END BB */
-
- pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY);
- pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition));
- count += name_len;
- inc_rfc1001_len(pSMB, count);
-
- pSMB->ByteCount = cpu_to_le16(count);
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *)pSMBr, &bytes_returned, 0);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_opens);
- if (rc) {
- cifs_dbg(FYI, "Error in Open = %d\n", rc);
- } else {
- /* BB verify if wct == 15 */
-
-/* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/
-
- *netfid = pSMBr->Fid; /* cifs fid stays in le */
- /* Let caller know file was created so we can set the mode. */
- /* Do we care about the CreateAction in any other cases? */
- /* BB FIXME BB */
-/* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction)
- *pOplock |= CIFS_CREATE_ACTION; */
- /* BB FIXME END */
-
- if (pfile_info) {
- pfile_info->CreationTime = 0; /* BB convert CreateTime*/
- pfile_info->LastAccessTime = 0; /* BB fixme */
- pfile_info->LastWriteTime = 0; /* BB fixme */
- pfile_info->ChangeTime = 0; /* BB fixme */
- pfile_info->Attributes =
- cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes));
- /* the file_info buf is endian converted by caller */
- pfile_info->AllocationSize =
- cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile));
- pfile_info->EndOfFile = pfile_info->AllocationSize;
- pfile_info->NumberOfLinks = cpu_to_le32(1);
- pfile_info->DeletePending = 0;
- }
- }
-
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto OldOpenRetry;
- return rc;
-}
-
-int
-CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock,
- FILE_ALL_INFO *buf)
-{
- int rc;
- OPEN_REQ *req = NULL;
- OPEN_RSP *rsp = NULL;
- int bytes_returned;
- int name_len;
- __u16 count;
- struct cifs_sb_info *cifs_sb = oparms->cifs_sb;
- struct cifs_tcon *tcon = oparms->tcon;
- int remap = cifs_remap(cifs_sb);
- const struct nls_table *nls = cifs_sb->local_nls;
- int create_options = oparms->create_options;
- int desired_access = oparms->desired_access;
- int disposition = oparms->disposition;
- const char *path = oparms->path;
-
-openRetry:
- rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req,
- (void **)&rsp);
- if (rc)
- return rc;
-
- /* no commands go after this */
- req->AndXCommand = 0xFF;
-
- if (req->hdr.Flags2 & SMBFLG2_UNICODE) {
- /* account for one byte pad to word boundary */
- count = 1;
- name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1),
- path, PATH_MAX, nls, remap);
- /* trailing null */
- name_len++;
- name_len *= 2;
- req->NameLength = cpu_to_le16(name_len);
- } else {
- /* BB improve check for buffer overruns BB */
- /* no pad */
- count = 0;
- name_len = copy_path_name(req->fileName, path);
- req->NameLength = cpu_to_le16(name_len);
- }
-
- if (*oplock & REQ_OPLOCK)
- req->OpenFlags = cpu_to_le32(REQ_OPLOCK);
- else if (*oplock & REQ_BATCHOPLOCK)
- req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK);
-
- req->DesiredAccess = cpu_to_le32(desired_access);
- req->AllocationSize = 0;
-
- /*
- * Set file as system file if special file such as fifo and server
- * expecting SFU style and no Unix extensions.
- */
- if (create_options & CREATE_OPTION_SPECIAL)
- req->FileAttributes = cpu_to_le32(ATTR_SYSTEM);
- else
- req->FileAttributes = cpu_to_le32(ATTR_NORMAL);
-
- /*
- * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case
- * sensitive checks for other servers such as Samba.
- */
- if (tcon->ses->capabilities & CAP_UNIX)
- req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);
-
- if (create_options & CREATE_OPTION_READONLY)
- req->FileAttributes |= cpu_to_le32(ATTR_READONLY);
-
- req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
- req->CreateDisposition = cpu_to_le32(disposition);
- req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);
-
- /* BB Expirement with various impersonation levels and verify */
- req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION);
- req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY;
-
- count += name_len;
- inc_rfc1001_len(req, count);
-
- req->ByteCount = cpu_to_le16(count);
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req,
- (struct smb_hdr *)rsp, &bytes_returned, 0);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_opens);
- if (rc) {
- cifs_dbg(FYI, "Error in Open = %d\n", rc);
- cifs_buf_release(req);
- if (rc == -EAGAIN)
- goto openRetry;
- return rc;
- }
-
- /* 1 byte no need to le_to_cpu */
- *oplock = rsp->OplockLevel;
- /* cifs fid stays in le */
- oparms->fid->netfid = rsp->Fid;
- oparms->fid->access = desired_access;
-
- /* Let caller know file was created so we can set the mode. */
- /* Do we care about the CreateAction in any other cases? */
- if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction)
- *oplock |= CIFS_CREATE_ACTION;
-
- if (buf) {
- /* copy from CreationTime to Attributes */
- memcpy((char *)buf, (char *)&rsp->CreationTime, 36);
- /* the file_info buf is endian converted by caller */
- buf->AllocationSize = rsp->AllocationSize;
- buf->EndOfFile = rsp->EndOfFile;
- buf->NumberOfLinks = cpu_to_le32(1);
- buf->DeletePending = 0;
- }
-
- cifs_buf_release(req);
- return rc;
-}
-
-static void
-cifs_readv_callback(struct mid_q_entry *mid)
-{
- struct cifs_readdata *rdata = mid->callback_data;
- struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
- struct TCP_Server_Info *server = tcon->ses->server;
- struct smb_rqst rqst = { .rq_iov = rdata->iov,
- .rq_nvec = 2,
- .rq_iter_size = iov_iter_count(&rdata->iter),
- .rq_iter = rdata->iter };
- struct cifs_credits credits = { .value = 1, .instance = 0 };
-
- cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n",
- __func__, mid->mid, mid->mid_state, rdata->result,
- rdata->bytes);
-
- switch (mid->mid_state) {
- case MID_RESPONSE_RECEIVED:
- /* result already set, check signature */
- if (server->sign) {
- int rc = 0;
-
- rc = cifs_verify_signature(&rqst, server,
- mid->sequence_number);
- if (rc)
- cifs_dbg(VFS, "SMB signature verification returned error = %d\n",
- rc);
- }
- /* FIXME: should this be counted toward the initiating task? */
- task_io_account_read(rdata->got_bytes);
- cifs_stats_bytes_read(tcon, rdata->got_bytes);
- break;
- case MID_REQUEST_SUBMITTED:
- case MID_RETRY_NEEDED:
- rdata->result = -EAGAIN;
- if (server->sign && rdata->got_bytes)
- /* reset bytes number since we can not check a sign */
- rdata->got_bytes = 0;
- /* FIXME: should this be counted toward the initiating task? */
- task_io_account_read(rdata->got_bytes);
- cifs_stats_bytes_read(tcon, rdata->got_bytes);
- break;
- default:
- rdata->result = -EIO;
- }
-
- queue_work(cifsiod_wq, &rdata->work);
- release_mid(mid);
- add_credits(server, &credits, 0);
-}
-
-/* cifs_async_readv - send an async write, and set up mid to handle result */
-int
-cifs_async_readv(struct cifs_readdata *rdata)
-{
- int rc;
- READ_REQ *smb = NULL;
- int wct;
- struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
- struct smb_rqst rqst = { .rq_iov = rdata->iov,
- .rq_nvec = 2 };
-
- cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n",
- __func__, rdata->offset, rdata->bytes);
-
- if (tcon->ses->capabilities & CAP_LARGE_FILES)
- wct = 12;
- else {
- wct = 10; /* old style read */
- if ((rdata->offset >> 32) > 0) {
- /* can not handle this big offset for old */
- return -EIO;
- }
- }
-
- rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb);
- if (rc)
- return rc;
-
- smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid);
- smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16));
-
- smb->AndXCommand = 0xFF; /* none */
- smb->Fid = rdata->cfile->fid.netfid;
- smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF);
- if (wct == 12)
- smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32);
- smb->Remaining = 0;
- smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF);
- smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16);
- if (wct == 12)
- smb->ByteCount = 0;
- else {
- /* old style read */
- struct smb_com_readx_req *smbr =
- (struct smb_com_readx_req *)smb;
- smbr->ByteCount = 0;
- }
-
- /* 4 for RFC1001 length + 1 for BCC */
- rdata->iov[0].iov_base = smb;
- rdata->iov[0].iov_len = 4;
- rdata->iov[1].iov_base = (char *)smb + 4;
- rdata->iov[1].iov_len = get_rfc1002_length(smb);
-
- kref_get(&rdata->refcount);
- rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive,
- cifs_readv_callback, NULL, rdata, 0, NULL);
-
- if (rc == 0)
- cifs_stats_inc(&tcon->stats.cifs_stats.num_reads);
- else
- kref_put(&rdata->refcount, cifs_readdata_release);
-
- cifs_small_buf_release(smb);
- return rc;
-}
-
-int
-CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
- unsigned int *nbytes, char **buf, int *pbuf_type)
-{
- int rc = -EACCES;
- READ_REQ *pSMB = NULL;
- READ_RSP *pSMBr = NULL;
- char *pReadData = NULL;
- int wct;
- int resp_buf_type = 0;
- struct kvec iov[1];
- struct kvec rsp_iov;
- __u32 pid = io_parms->pid;
- __u16 netfid = io_parms->netfid;
- __u64 offset = io_parms->offset;
- struct cifs_tcon *tcon = io_parms->tcon;
- unsigned int count = io_parms->length;
-
- cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid);
- if (tcon->ses->capabilities & CAP_LARGE_FILES)
- wct = 12;
- else {
- wct = 10; /* old style read */
- if ((offset >> 32) > 0) {
- /* can not handle this big offset for old */
- return -EIO;
- }
- }
-
- *nbytes = 0;
- rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB);
- if (rc)
- return rc;
-
- pSMB->hdr.Pid = cpu_to_le16((__u16)pid);
- pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16));
-
- /* tcon and ses pointer are checked in smb_init */
- if (tcon->ses->server == NULL)
- return -ECONNABORTED;
-
- pSMB->AndXCommand = 0xFF; /* none */
- pSMB->Fid = netfid;
- pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
- if (wct == 12)
- pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
-
- pSMB->Remaining = 0;
- pSMB->MaxCount = cpu_to_le16(count & 0xFFFF);
- pSMB->MaxCountHigh = cpu_to_le32(count >> 16);
- if (wct == 12)
- pSMB->ByteCount = 0; /* no need to do le conversion since 0 */
- else {
- /* old style read */
- struct smb_com_readx_req *pSMBW =
- (struct smb_com_readx_req *)pSMB;
- pSMBW->ByteCount = 0;
- }
-
- iov[0].iov_base = (char *)pSMB;
- iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4;
- rc = SendReceive2(xid, tcon->ses, iov, 1, &resp_buf_type,
- CIFS_LOG_ERROR, &rsp_iov);
- cifs_small_buf_release(pSMB);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_reads);
- pSMBr = (READ_RSP *)rsp_iov.iov_base;
- if (rc) {
- cifs_dbg(VFS, "Send error in read = %d\n", rc);
- } else {
- int data_length = le16_to_cpu(pSMBr->DataLengthHigh);
- data_length = data_length << 16;
- data_length += le16_to_cpu(pSMBr->DataLength);
- *nbytes = data_length;
-
- /*check that DataLength would not go beyond end of SMB */
- if ((data_length > CIFSMaxBufSize)
- || (data_length > count)) {
- cifs_dbg(FYI, "bad length %d for count %d\n",
- data_length, count);
- rc = -EIO;
- *nbytes = 0;
- } else {
- pReadData = (char *) (&pSMBr->hdr.Protocol) +
- le16_to_cpu(pSMBr->DataOffset);
-/* if (rc = copy_to_user(buf, pReadData, data_length)) {
- cifs_dbg(VFS, "Faulting on read rc = %d\n",rc);
- rc = -EFAULT;
- }*/ /* can not use copy_to_user when using page cache*/
- if (*buf)
- memcpy(*buf, pReadData, data_length);
- }
- }
-
- if (*buf) {
- free_rsp_buf(resp_buf_type, rsp_iov.iov_base);
- } else if (resp_buf_type != CIFS_NO_BUFFER) {
- /* return buffer to caller to free */
- *buf = rsp_iov.iov_base;
- if (resp_buf_type == CIFS_SMALL_BUFFER)
- *pbuf_type = CIFS_SMALL_BUFFER;
- else if (resp_buf_type == CIFS_LARGE_BUFFER)
- *pbuf_type = CIFS_LARGE_BUFFER;
- } /* else no valid buffer on return - leave as null */
-
- /* Note: On -EAGAIN error only caller can retry on handle based calls
- since file handle passed in no longer valid */
- return rc;
-}
-
-
-int
-CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
- unsigned int *nbytes, const char *buf)
-{
- int rc = -EACCES;
- WRITE_REQ *pSMB = NULL;
- WRITE_RSP *pSMBr = NULL;
- int bytes_returned, wct;
- __u32 bytes_sent;
- __u16 byte_count;
- __u32 pid = io_parms->pid;
- __u16 netfid = io_parms->netfid;
- __u64 offset = io_parms->offset;
- struct cifs_tcon *tcon = io_parms->tcon;
- unsigned int count = io_parms->length;
-
- *nbytes = 0;
-
- /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/
- if (tcon->ses == NULL)
- return -ECONNABORTED;
-
- if (tcon->ses->capabilities & CAP_LARGE_FILES)
- wct = 14;
- else {
- wct = 12;
- if ((offset >> 32) > 0) {
- /* can not handle big offset for old srv */
- return -EIO;
- }
- }
-
- rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- pSMB->hdr.Pid = cpu_to_le16((__u16)pid);
- pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16));
-
- /* tcon and ses pointer are checked in smb_init */
- if (tcon->ses->server == NULL)
- return -ECONNABORTED;
-
- pSMB->AndXCommand = 0xFF; /* none */
- pSMB->Fid = netfid;
- pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
- if (wct == 14)
- pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
-
- pSMB->Reserved = 0xFFFFFFFF;
- pSMB->WriteMode = 0;
- pSMB->Remaining = 0;
-
- /* Can increase buffer size if buffer is big enough in some cases ie we
- can send more if LARGE_WRITE_X capability returned by the server and if
- our buffer is big enough or if we convert to iovecs on socket writes
- and eliminate the copy to the CIFS buffer */
- if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) {
- bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count);
- } else {
- bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)
- & ~0xFF;
- }
-
- if (bytes_sent > count)
- bytes_sent = count;
- pSMB->DataOffset =
- cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4);
- if (buf)
- memcpy(pSMB->Data, buf, bytes_sent);
- else if (count != 0) {
- /* No buffer */
- cifs_buf_release(pSMB);
- return -EINVAL;
- } /* else setting file size with write of zero bytes */
- if (wct == 14)
- byte_count = bytes_sent + 1; /* pad */
- else /* wct == 12 */
- byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */
-
- pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF);
- pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16);
- inc_rfc1001_len(pSMB, byte_count);
-
- if (wct == 14)
- pSMB->ByteCount = cpu_to_le16(byte_count);
- else { /* old style write has byte count 4 bytes earlier
- so 4 bytes pad */
- struct smb_com_writex_req *pSMBW =
- (struct smb_com_writex_req *)pSMB;
- pSMBW->ByteCount = cpu_to_le16(byte_count);
- }
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_writes);
- if (rc) {
- cifs_dbg(FYI, "Send error in write = %d\n", rc);
- } else {
- *nbytes = le16_to_cpu(pSMBr->CountHigh);
- *nbytes = (*nbytes) << 16;
- *nbytes += le16_to_cpu(pSMBr->Count);
-
- /*
- * Mask off high 16 bits when bytes written as returned by the
- * server is greater than bytes requested by the client. Some
- * OS/2 servers are known to set incorrect CountHigh values.
- */
- if (*nbytes > count)
- *nbytes &= 0xFFFF;
- }
-
- cifs_buf_release(pSMB);
-
- /* Note: On -EAGAIN error only caller can retry on handle based calls
- since file handle passed in no longer valid */
-
- return rc;
-}
-
-/*
- * Check the mid_state and signature on received buffer (if any), and queue the
- * workqueue completion task.
- */
-static void
-cifs_writev_callback(struct mid_q_entry *mid)
-{
- struct cifs_writedata *wdata = mid->callback_data;
- struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
- unsigned int written;
- WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf;
- struct cifs_credits credits = { .value = 1, .instance = 0 };
-
- switch (mid->mid_state) {
- case MID_RESPONSE_RECEIVED:
- wdata->result = cifs_check_receive(mid, tcon->ses->server, 0);
- if (wdata->result != 0)
- break;
-
- written = le16_to_cpu(smb->CountHigh);
- written <<= 16;
- written += le16_to_cpu(smb->Count);
- /*
- * Mask off high 16 bits when bytes written as returned
- * by the server is greater than bytes requested by the
- * client. OS/2 servers are known to set incorrect
- * CountHigh values.
- */
- if (written > wdata->bytes)
- written &= 0xFFFF;
-
- if (written < wdata->bytes)
- wdata->result = -ENOSPC;
- else
- wdata->bytes = written;
- break;
- case MID_REQUEST_SUBMITTED:
- case MID_RETRY_NEEDED:
- wdata->result = -EAGAIN;
- break;
- default:
- wdata->result = -EIO;
- break;
- }
-
- queue_work(cifsiod_wq, &wdata->work);
- release_mid(mid);
- add_credits(tcon->ses->server, &credits, 0);
-}
-
-/* cifs_async_writev - send an async write, and set up mid to handle result */
-int
-cifs_async_writev(struct cifs_writedata *wdata,
- void (*release)(struct kref *kref))
-{
- int rc = -EACCES;
- WRITE_REQ *smb = NULL;
- int wct;
- struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
- struct kvec iov[2];
- struct smb_rqst rqst = { };
-
- if (tcon->ses->capabilities & CAP_LARGE_FILES) {
- wct = 14;
- } else {
- wct = 12;
- if (wdata->offset >> 32 > 0) {
- /* can not handle big offset for old srv */
- return -EIO;
- }
- }
-
- rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb);
- if (rc)
- goto async_writev_out;
-
- smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid);
- smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16));
-
- smb->AndXCommand = 0xFF; /* none */
- smb->Fid = wdata->cfile->fid.netfid;
- smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF);
- if (wct == 14)
- smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32);
- smb->Reserved = 0xFFFFFFFF;
- smb->WriteMode = 0;
- smb->Remaining = 0;
-
- smb->DataOffset =
- cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4);
-
- /* 4 for RFC1001 length + 1 for BCC */
- iov[0].iov_len = 4;
- iov[0].iov_base = smb;
- iov[1].iov_len = get_rfc1002_length(smb) + 1;
- iov[1].iov_base = (char *)smb + 4;
-
- rqst.rq_iov = iov;
- rqst.rq_nvec = 2;
- rqst.rq_iter = wdata->iter;
- rqst.rq_iter_size = iov_iter_count(&wdata->iter);
-
- cifs_dbg(FYI, "async write at %llu %u bytes\n",
- wdata->offset, wdata->bytes);
-
- smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF);
- smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16);
-
- if (wct == 14) {
- inc_rfc1001_len(&smb->hdr, wdata->bytes + 1);
- put_bcc(wdata->bytes + 1, &smb->hdr);
- } else {
- /* wct == 12 */
- struct smb_com_writex_req *smbw =
- (struct smb_com_writex_req *)smb;
- inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5);
- put_bcc(wdata->bytes + 5, &smbw->hdr);
- iov[1].iov_len += 4; /* pad bigger by four bytes */
- }
-
- kref_get(&wdata->refcount);
- rc = cifs_call_async(tcon->ses->server, &rqst, NULL,
- cifs_writev_callback, NULL, wdata, 0, NULL);
-
- if (rc == 0)
- cifs_stats_inc(&tcon->stats.cifs_stats.num_writes);
- else
- kref_put(&wdata->refcount, release);
-
-async_writev_out:
- cifs_small_buf_release(smb);
- return rc;
-}
-
-int
-CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
- unsigned int *nbytes, struct kvec *iov, int n_vec)
-{
- int rc;
- WRITE_REQ *pSMB = NULL;
- int wct;
- int smb_hdr_len;
- int resp_buf_type = 0;
- __u32 pid = io_parms->pid;
- __u16 netfid = io_parms->netfid;
- __u64 offset = io_parms->offset;
- struct cifs_tcon *tcon = io_parms->tcon;
- unsigned int count = io_parms->length;
- struct kvec rsp_iov;
-
- *nbytes = 0;
-
- cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count);
-
- if (tcon->ses->capabilities & CAP_LARGE_FILES) {
- wct = 14;
- } else {
- wct = 12;
- if ((offset >> 32) > 0) {
- /* can not handle big offset for old srv */
- return -EIO;
- }
- }
- rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB);
- if (rc)
- return rc;
-
- pSMB->hdr.Pid = cpu_to_le16((__u16)pid);
- pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16));
-
- /* tcon and ses pointer are checked in smb_init */
- if (tcon->ses->server == NULL)
- return -ECONNABORTED;
-
- pSMB->AndXCommand = 0xFF; /* none */
- pSMB->Fid = netfid;
- pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
- if (wct == 14)
- pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
- pSMB->Reserved = 0xFFFFFFFF;
- pSMB->WriteMode = 0;
- pSMB->Remaining = 0;
-
- pSMB->DataOffset =
- cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4);
-
- pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF);
- pSMB->DataLengthHigh = cpu_to_le16(count >> 16);
- /* header + 1 byte pad */
- smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1;
- if (wct == 14)
- inc_rfc1001_len(pSMB, count + 1);
- else /* wct == 12 */
- inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */
- if (wct == 14)
- pSMB->ByteCount = cpu_to_le16(count + 1);
- else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ {
- struct smb_com_writex_req *pSMBW =
- (struct smb_com_writex_req *)pSMB;
- pSMBW->ByteCount = cpu_to_le16(count + 5);
- }
- iov[0].iov_base = pSMB;
- if (wct == 14)
- iov[0].iov_len = smb_hdr_len + 4;
- else /* wct == 12 pad bigger by four bytes */
- iov[0].iov_len = smb_hdr_len + 8;
-
- rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0,
- &rsp_iov);
- cifs_small_buf_release(pSMB);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_writes);
- if (rc) {
- cifs_dbg(FYI, "Send error Write2 = %d\n", rc);
- } else if (resp_buf_type == 0) {
- /* presumably this can not happen, but best to be safe */
- rc = -EIO;
- } else {
- WRITE_RSP *pSMBr = (WRITE_RSP *)rsp_iov.iov_base;
- *nbytes = le16_to_cpu(pSMBr->CountHigh);
- *nbytes = (*nbytes) << 16;
- *nbytes += le16_to_cpu(pSMBr->Count);
-
- /*
- * Mask off high 16 bits when bytes written as returned by the
- * server is greater than bytes requested by the client. OS/2
- * servers are known to set incorrect CountHigh values.
- */
- if (*nbytes > count)
- *nbytes &= 0xFFFF;
- }
-
- free_rsp_buf(resp_buf_type, rsp_iov.iov_base);
-
- /* Note: On -EAGAIN error only caller can retry on handle based calls
- since file handle passed in no longer valid */
-
- return rc;
-}
-
-int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
- const __u16 netfid, const __u8 lock_type, const __u32 num_unlock,
- const __u32 num_lock, LOCKING_ANDX_RANGE *buf)
-{
- int rc = 0;
- LOCK_REQ *pSMB = NULL;
- struct kvec iov[2];
- struct kvec rsp_iov;
- int resp_buf_type;
- __u16 count;
-
- cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n",
- num_lock, num_unlock);
-
- rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB);
- if (rc)
- return rc;
-
- pSMB->Timeout = 0;
- pSMB->NumberOfLocks = cpu_to_le16(num_lock);
- pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock);
- pSMB->LockType = lock_type;
- pSMB->AndXCommand = 0xFF; /* none */
- pSMB->Fid = netfid; /* netfid stays le */
-
- count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE);
- inc_rfc1001_len(pSMB, count);
- pSMB->ByteCount = cpu_to_le16(count);
-
- iov[0].iov_base = (char *)pSMB;
- iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 -
- (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE);
- iov[1].iov_base = (char *)buf;
- iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE);
-
- cifs_stats_inc(&tcon->stats.cifs_stats.num_locks);
- rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type,
- CIFS_NO_RSP_BUF, &rsp_iov);
- cifs_small_buf_release(pSMB);
- if (rc)
- cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc);
-
- return rc;
-}
-
-int
-CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
- const __u16 smb_file_id, const __u32 netpid, const __u64 len,
- const __u64 offset, const __u32 numUnlock,
- const __u32 numLock, const __u8 lockType,
- const bool waitFlag, const __u8 oplock_level)
-{
- int rc = 0;
- LOCK_REQ *pSMB = NULL;
-/* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */
- int bytes_returned;
- int flags = 0;
- __u16 count;
-
- cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n",
- (int)waitFlag, numLock);
- rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB);
-
- if (rc)
- return rc;
-
- if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) {
- /* no response expected */
- flags = CIFS_NO_SRV_RSP | CIFS_NON_BLOCKING | CIFS_OBREAK_OP;
- pSMB->Timeout = 0;
- } else if (waitFlag) {
- flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */
- pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */
- } else {
- pSMB->Timeout = 0;
- }
-
- pSMB->NumberOfLocks = cpu_to_le16(numLock);
- pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock);
- pSMB->LockType = lockType;
- pSMB->OplockLevel = oplock_level;
- pSMB->AndXCommand = 0xFF; /* none */
- pSMB->Fid = smb_file_id; /* netfid stays le */
-
- if ((numLock != 0) || (numUnlock != 0)) {
- pSMB->Locks[0].Pid = cpu_to_le16(netpid);
- /* BB where to store pid high? */
- pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len);
- pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32));
- pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset);
- pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32));
- count = sizeof(LOCKING_ANDX_RANGE);
- } else {
- /* oplock break */
- count = 0;
- }
- inc_rfc1001_len(pSMB, count);
- pSMB->ByteCount = cpu_to_le16(count);
-
- if (waitFlag)
- rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMB, &bytes_returned);
- else
- rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags);
- cifs_small_buf_release(pSMB);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_locks);
- if (rc)
- cifs_dbg(FYI, "Send error in Lock = %d\n", rc);
-
- /* Note: On -EAGAIN error only caller can retry on handle based calls
- since file handle passed in no longer valid */
- return rc;
-}
-
-int
-CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
- const __u16 smb_file_id, const __u32 netpid,
- const loff_t start_offset, const __u64 len,
- struct file_lock *pLockData, const __u16 lock_type,
- const bool waitFlag)
-{
- struct smb_com_transaction2_sfi_req *pSMB = NULL;
- struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
- struct cifs_posix_lock *parm_data;
- int rc = 0;
- int timeout = 0;
- int bytes_returned = 0;
- int resp_buf_type = 0;
- __u16 params, param_offset, offset, byte_count, count;
- struct kvec iov[1];
- struct kvec rsp_iov;
-
- cifs_dbg(FYI, "Posix Lock\n");
-
- rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
-
- if (rc)
- return rc;
-
- pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB;
-
- params = 6;
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
- offset = param_offset + params;
-
- count = sizeof(struct cifs_posix_lock);
- pSMB->MaxParameterCount = cpu_to_le16(2);
- pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- if (pLockData)
- pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
- else
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
- byte_count = 3 /* pad */ + params + count;
- pSMB->DataCount = cpu_to_le16(count);
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
- /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */
- parm_data = (struct cifs_posix_lock *)
- (((char *)pSMB) + offset + 4);
-
- parm_data->lock_type = cpu_to_le16(lock_type);
- if (waitFlag) {
- timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */
- parm_data->lock_flags = cpu_to_le16(1);
- pSMB->Timeout = cpu_to_le32(-1);
- } else
- pSMB->Timeout = 0;
-
- parm_data->pid = cpu_to_le32(netpid);
- parm_data->start = cpu_to_le64(start_offset);
- parm_data->length = cpu_to_le64(len); /* normalize negative numbers */
-
- pSMB->DataOffset = cpu_to_le16(offset);
- pSMB->Fid = smb_file_id;
- pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
- if (waitFlag) {
- rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned);
- } else {
- iov[0].iov_base = (char *)pSMB;
- iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4;
- rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */,
- &resp_buf_type, timeout, &rsp_iov);
- pSMBr = (struct smb_com_transaction2_sfi_rsp *)rsp_iov.iov_base;
- }
- cifs_small_buf_release(pSMB);
-
- if (rc) {
- cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc);
- } else if (pLockData) {
- /* lock structure can be returned on get */
- __u16 data_offset;
- __u16 data_count;
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
-
- if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) {
- rc = -EIO; /* bad smb */
- goto plk_err_exit;
- }
- data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- data_count = le16_to_cpu(pSMBr->t2.DataCount);
- if (data_count < sizeof(struct cifs_posix_lock)) {
- rc = -EIO;
- goto plk_err_exit;
- }
- parm_data = (struct cifs_posix_lock *)
- ((char *)&pSMBr->hdr.Protocol + data_offset);
- if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK))
- pLockData->fl_type = F_UNLCK;
- else {
- if (parm_data->lock_type ==
- cpu_to_le16(CIFS_RDLCK))
- pLockData->fl_type = F_RDLCK;
- else if (parm_data->lock_type ==
- cpu_to_le16(CIFS_WRLCK))
- pLockData->fl_type = F_WRLCK;
-
- pLockData->fl_start = le64_to_cpu(parm_data->start);
- pLockData->fl_end = pLockData->fl_start +
- (le64_to_cpu(parm_data->length) ?
- le64_to_cpu(parm_data->length) - 1 : 0);
- pLockData->fl_pid = -le32_to_cpu(parm_data->pid);
- }
- }
-
-plk_err_exit:
- free_rsp_buf(resp_buf_type, rsp_iov.iov_base);
-
- /* Note: On -EAGAIN error only caller can retry on handle based calls
- since file handle passed in no longer valid */
-
- return rc;
-}
-
-
-int
-CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id)
-{
- int rc = 0;
- CLOSE_REQ *pSMB = NULL;
- cifs_dbg(FYI, "In CIFSSMBClose\n");
-
-/* do not retry on dead session on close */
- rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB);
- if (rc == -EAGAIN)
- return 0;
- if (rc)
- return rc;
-
- pSMB->FileID = (__u16) smb_file_id;
- pSMB->LastWriteTime = 0xFFFFFFFF;
- pSMB->ByteCount = 0;
- rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
- cifs_small_buf_release(pSMB);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_closes);
- if (rc) {
- if (rc != -EINTR) {
- /* EINTR is expected when user ctl-c to kill app */
- cifs_dbg(VFS, "Send error in Close = %d\n", rc);
- }
- }
-
- /* Since session is dead, file will be closed on server already */
- if (rc == -EAGAIN)
- rc = 0;
-
- return rc;
-}
-
-int
-CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id)
-{
- int rc = 0;
- FLUSH_REQ *pSMB = NULL;
- cifs_dbg(FYI, "In CIFSSMBFlush\n");
-
- rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB);
- if (rc)
- return rc;
-
- pSMB->FileID = (__u16) smb_file_id;
- pSMB->ByteCount = 0;
- rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
- cifs_small_buf_release(pSMB);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes);
- if (rc)
- cifs_dbg(VFS, "Send error in Flush = %d\n", rc);
-
- return rc;
-}
-
-int
-CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
- const char *from_name, const char *to_name,
- struct cifs_sb_info *cifs_sb)
-{
- int rc = 0;
- RENAME_REQ *pSMB = NULL;
- RENAME_RSP *pSMBr = NULL;
- int bytes_returned;
- int name_len, name_len2;
- __u16 count;
- int remap = cifs_remap(cifs_sb);
-
- cifs_dbg(FYI, "In CIFSSMBRename\n");
-renameRetry:
- rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- pSMB->BufferFormat = 0x04;
- pSMB->SearchAttributes =
- cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
- ATTR_DIRECTORY);
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName,
- from_name, PATH_MAX,
- cifs_sb->local_nls, remap);
- name_len++; /* trailing null */
- name_len *= 2;
- pSMB->OldFileName[name_len] = 0x04; /* pad */
- /* protocol requires ASCII signature byte on Unicode string */
- pSMB->OldFileName[name_len + 1] = 0x00;
- name_len2 =
- cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2],
- to_name, PATH_MAX, cifs_sb->local_nls,
- remap);
- name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
- name_len2 *= 2; /* convert to bytes */
- } else {
- name_len = copy_path_name(pSMB->OldFileName, from_name);
- name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name);
- pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
- name_len2++; /* signature byte */
- }
-
- count = 1 /* 1st signature byte */ + name_len + name_len2;
- inc_rfc1001_len(pSMB, count);
- pSMB->ByteCount = cpu_to_le16(count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_renames);
- if (rc)
- cifs_dbg(FYI, "Send error in rename = %d\n", rc);
-
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto renameRetry;
-
- return rc;
-}
-
-int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon,
- int netfid, const char *target_name,
- const struct nls_table *nls_codepage, int remap)
-{
- struct smb_com_transaction2_sfi_req *pSMB = NULL;
- struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
- struct set_file_rename *rename_info;
- char *data_offset;
- char dummy_string[30];
- int rc = 0;
- int bytes_returned = 0;
- int len_of_str;
- __u16 params, param_offset, offset, count, byte_count;
-
- cifs_dbg(FYI, "Rename to File by handle\n");
- rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- params = 6;
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
- offset = param_offset + params;
-
- /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */
- data_offset = (char *)(pSMB) + offset + 4;
- rename_info = (struct set_file_rename *) data_offset;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
- byte_count = 3 /* pad */ + params;
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
- pSMB->DataOffset = cpu_to_le16(offset);
- /* construct random name ".cifs_tmp<inodenum><mid>" */
- rename_info->overwrite = cpu_to_le32(1);
- rename_info->root_fid = 0;
- /* unicode only call */
- if (target_name == NULL) {
- sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid);
- len_of_str =
- cifsConvertToUTF16((__le16 *)rename_info->target_name,
- dummy_string, 24, nls_codepage, remap);
- } else {
- len_of_str =
- cifsConvertToUTF16((__le16 *)rename_info->target_name,
- target_name, PATH_MAX, nls_codepage,
- remap);
- }
- rename_info->target_name_len = cpu_to_le32(2 * len_of_str);
- count = sizeof(struct set_file_rename) + (2 * len_of_str);
- byte_count += count;
- pSMB->DataCount = cpu_to_le16(count);
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->Fid = netfid;
- pSMB->InformationLevel =
- cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
- rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames);
- if (rc)
- cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n",
- rc);
-
- cifs_buf_release(pSMB);
-
- /* Note: On -EAGAIN error only caller can retry on handle based calls
- since file handle passed in no longer valid */
-
- return rc;
-}
-
-int
-CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon,
- const char *fromName, const __u16 target_tid, const char *toName,
- const int flags, const struct nls_table *nls_codepage, int remap)
-{
- int rc = 0;
- COPY_REQ *pSMB = NULL;
- COPY_RSP *pSMBr = NULL;
- int bytes_returned;
- int name_len, name_len2;
- __u16 count;
-
- cifs_dbg(FYI, "In CIFSSMBCopy\n");
-copyRetry:
- rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- pSMB->BufferFormat = 0x04;
- pSMB->Tid2 = target_tid;
-
- pSMB->Flags = cpu_to_le16(flags & COPY_TREE);
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName,
- fromName, PATH_MAX, nls_codepage,
- remap);
- name_len++; /* trailing null */
- name_len *= 2;
- pSMB->OldFileName[name_len] = 0x04; /* pad */
- /* protocol requires ASCII signature byte on Unicode string */
- pSMB->OldFileName[name_len + 1] = 0x00;
- name_len2 =
- cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2],
- toName, PATH_MAX, nls_codepage, remap);
- name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
- name_len2 *= 2; /* convert to bytes */
- } else {
- name_len = copy_path_name(pSMB->OldFileName, fromName);
- pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
- name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, toName);
- name_len2++; /* signature byte */
- }
-
- count = 1 /* 1st signature byte */ + name_len + name_len2;
- inc_rfc1001_len(pSMB, count);
- pSMB->ByteCount = cpu_to_le16(count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n",
- rc, le16_to_cpu(pSMBr->CopyCount));
- }
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto copyRetry;
-
- return rc;
-}
-
-int
-CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon,
- const char *fromName, const char *toName,
- const struct nls_table *nls_codepage, int remap)
-{
- TRANSACTION2_SPI_REQ *pSMB = NULL;
- TRANSACTION2_SPI_RSP *pSMBr = NULL;
- char *data_offset;
- int name_len;
- int name_len_target;
- int rc = 0;
- int bytes_returned = 0;
- __u16 params, param_offset, offset, byte_count;
-
- cifs_dbg(FYI, "In Symlink Unix style\n");
-createSymLinkRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName,
- /* find define for this maxpathcomponent */
- PATH_MAX, nls_codepage, remap);
- name_len++; /* trailing null */
- name_len *= 2;
-
- } else {
- name_len = copy_path_name(pSMB->FileName, fromName);
- }
- params = 6 + name_len;
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_spi_req,
- InformationLevel) - 4;
- offset = param_offset + params;
-
- /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */
- data_offset = (char *)pSMB + offset + 4;
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len_target =
- cifsConvertToUTF16((__le16 *) data_offset, toName,
- /* find define for this maxpathcomponent */
- PATH_MAX, nls_codepage, remap);
- name_len_target++; /* trailing null */
- name_len_target *= 2;
- } else {
- name_len_target = copy_path_name(data_offset, toName);
- }
-
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find exact max on data count below from sess */
- pSMB->MaxDataCount = cpu_to_le16(1000);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
- byte_count = 3 /* pad */ + params + name_len_target;
- pSMB->DataCount = cpu_to_le16(name_len_target);
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
- pSMB->DataOffset = cpu_to_le16(offset);
- pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks);
- if (rc)
- cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n",
- rc);
-
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto createSymLinkRetry;
-
- return rc;
-}
-
-int
-CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
- const char *fromName, const char *toName,
- const struct nls_table *nls_codepage, int remap)
-{
- TRANSACTION2_SPI_REQ *pSMB = NULL;
- TRANSACTION2_SPI_RSP *pSMBr = NULL;
- char *data_offset;
- int name_len;
- int name_len_target;
- int rc = 0;
- int bytes_returned = 0;
- __u16 params, param_offset, offset, byte_count;
-
- cifs_dbg(FYI, "In Create Hard link Unix style\n");
-createHardLinkRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName,
- PATH_MAX, nls_codepage, remap);
- name_len++; /* trailing null */
- name_len *= 2;
-
- } else {
- name_len = copy_path_name(pSMB->FileName, toName);
- }
- params = 6 + name_len;
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_spi_req,
- InformationLevel) - 4;
- offset = param_offset + params;
-
- /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */
- data_offset = (char *)pSMB + offset + 4;
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len_target =
- cifsConvertToUTF16((__le16 *) data_offset, fromName,
- PATH_MAX, nls_codepage, remap);
- name_len_target++; /* trailing null */
- name_len_target *= 2;
- } else {
- name_len_target = copy_path_name(data_offset, fromName);
- }
-
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find exact max on data count below from sess*/
- pSMB->MaxDataCount = cpu_to_le16(1000);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
- byte_count = 3 /* pad */ + params + name_len_target;
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->DataCount = cpu_to_le16(name_len_target);
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
- pSMB->DataOffset = cpu_to_le16(offset);
- pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks);
- if (rc)
- cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n",
- rc);
-
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto createHardLinkRetry;
-
- return rc;
-}
-
-int
-CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
- const char *from_name, const char *to_name,
- struct cifs_sb_info *cifs_sb)
-{
- int rc = 0;
- NT_RENAME_REQ *pSMB = NULL;
- RENAME_RSP *pSMBr = NULL;
- int bytes_returned;
- int name_len, name_len2;
- __u16 count;
- int remap = cifs_remap(cifs_sb);
-
- cifs_dbg(FYI, "In CIFSCreateHardLink\n");
-winCreateHardLinkRetry:
-
- rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- pSMB->SearchAttributes =
- cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
- ATTR_DIRECTORY);
- pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK);
- pSMB->ClusterCount = 0;
-
- pSMB->BufferFormat = 0x04;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name,
- PATH_MAX, cifs_sb->local_nls, remap);
- name_len++; /* trailing null */
- name_len *= 2;
-
- /* protocol specifies ASCII buffer format (0x04) for unicode */
- pSMB->OldFileName[name_len] = 0x04;
- pSMB->OldFileName[name_len + 1] = 0x00; /* pad */
- name_len2 =
- cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2],
- to_name, PATH_MAX, cifs_sb->local_nls,
- remap);
- name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
- name_len2 *= 2; /* convert to bytes */
- } else {
- name_len = copy_path_name(pSMB->OldFileName, from_name);
- pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
- name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name);
- name_len2++; /* signature byte */
- }
-
- count = 1 /* string type byte */ + name_len + name_len2;
- inc_rfc1001_len(pSMB, count);
- pSMB->ByteCount = cpu_to_le16(count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks);
- if (rc)
- cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc);
-
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto winCreateHardLinkRetry;
-
- return rc;
-}
-
-int
-CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
- const unsigned char *searchName, char **symlinkinfo,
- const struct nls_table *nls_codepage, int remap)
-{
-/* SMB_QUERY_FILE_UNIX_LINK */
- TRANSACTION2_QPI_REQ *pSMB = NULL;
- TRANSACTION2_QPI_RSP *pSMBr = NULL;
- int rc = 0;
- int bytes_returned;
- int name_len;
- __u16 params, byte_count;
- char *data_start;
-
- cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName);
-
-querySymLinkRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName,
- searchName, PATH_MAX, nls_codepage,
- remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- name_len = copy_path_name(pSMB->FileName, searchName);
- }
-
- params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
- pSMB->TotalDataCount = 0;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- pSMB->ParameterOffset = cpu_to_le16(offsetof(
- struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
- byte_count = params + 1 /* pad */ ;
- pSMB->TotalParameterCount = cpu_to_le16(params);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc);
- } else {
- /* decode response */
-
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- /* BB also check enough total bytes returned */
- if (rc || get_bcc(&pSMBr->hdr) < 2)
- rc = -EIO;
- else {
- bool is_unicode;
- u16 count = le16_to_cpu(pSMBr->t2.DataCount);
-
- data_start = ((char *) &pSMBr->hdr.Protocol) +
- le16_to_cpu(pSMBr->t2.DataOffset);
-
- if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
- is_unicode = true;
- else
- is_unicode = false;
-
- /* BB FIXME investigate remapping reserved chars here */
- *symlinkinfo = cifs_strndup_from_utf16(data_start,
- count, is_unicode, nls_codepage);
- if (!*symlinkinfo)
- rc = -ENOMEM;
- }
- }
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto querySymLinkRetry;
- return rc;
-}
-
-/*
- * Recent Windows versions now create symlinks more frequently
- * and they use the "reparse point" mechanism below. We can of course
- * do symlinks nicely to Samba and other servers which support the
- * CIFS Unix Extensions and we can also do SFU symlinks and "client only"
- * "MF" symlinks optionally, but for recent Windows we really need to
- * reenable the code below and fix the cifs_symlink callers to handle this.
- * In the interim this code has been moved to its own config option so
- * it is not compiled in by default until callers fixed up and more tested.
- */
-int
-CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
- __u16 fid, char **symlinkinfo,
- const struct nls_table *nls_codepage)
-{
- int rc = 0;
- int bytes_returned;
- struct smb_com_transaction_ioctl_req *pSMB;
- struct smb_com_transaction_ioctl_rsp *pSMBr;
- bool is_unicode;
- unsigned int sub_len;
- char *sub_start;
- struct reparse_symlink_data *reparse_buf;
- struct reparse_posix_data *posix_buf;
- __u32 data_offset, data_count;
- char *end_of_smb;
-
- cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid);
- rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- pSMB->TotalParameterCount = 0 ;
- pSMB->TotalDataCount = 0;
- pSMB->MaxParameterCount = cpu_to_le32(2);
- /* BB find exact data count max from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00);
- pSMB->MaxSetupCount = 4;
- pSMB->Reserved = 0;
- pSMB->ParameterOffset = 0;
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 4;
- pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT);
- pSMB->IsFsctl = 1; /* FSCTL */
- pSMB->IsRootFlag = 0;
- pSMB->Fid = fid; /* file handle always le */
- pSMB->ByteCount = 0;
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc);
- goto qreparse_out;
- }
-
- data_offset = le32_to_cpu(pSMBr->DataOffset);
- data_count = le32_to_cpu(pSMBr->DataCount);
- if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) {
- /* BB also check enough total bytes returned */
- rc = -EIO; /* bad smb */
- goto qreparse_out;
- }
- if (!data_count || (data_count > 2048)) {
- rc = -EIO;
- cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n");
- goto qreparse_out;
- }
- end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount;
- reparse_buf = (struct reparse_symlink_data *)
- ((char *)&pSMBr->hdr.Protocol + data_offset);
- if ((char *)reparse_buf >= end_of_smb) {
- rc = -EIO;
- goto qreparse_out;
- }
- if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) {
- cifs_dbg(FYI, "NFS style reparse tag\n");
- posix_buf = (struct reparse_posix_data *)reparse_buf;
-
- if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) {
- cifs_dbg(FYI, "unsupported file type 0x%llx\n",
- le64_to_cpu(posix_buf->InodeType));
- rc = -EOPNOTSUPP;
- goto qreparse_out;
- }
- is_unicode = true;
- sub_len = le16_to_cpu(reparse_buf->ReparseDataLength);
- if (posix_buf->PathBuffer + sub_len > end_of_smb) {
- cifs_dbg(FYI, "reparse buf beyond SMB\n");
- rc = -EIO;
- goto qreparse_out;
- }
- *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer,
- sub_len, is_unicode, nls_codepage);
- goto qreparse_out;
- } else if (reparse_buf->ReparseTag !=
- cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) {
- rc = -EOPNOTSUPP;
- goto qreparse_out;
- }
-
- /* Reparse tag is NTFS symlink */
- sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) +
- reparse_buf->PathBuffer;
- sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength);
- if (sub_start + sub_len > end_of_smb) {
- cifs_dbg(FYI, "reparse buf beyond SMB\n");
- rc = -EIO;
- goto qreparse_out;
- }
- if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
- is_unicode = true;
- else
- is_unicode = false;
-
- /* BB FIXME investigate remapping reserved chars here */
- *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode,
- nls_codepage);
- if (!*symlinkinfo)
- rc = -ENOMEM;
-qreparse_out:
- cifs_buf_release(pSMB);
-
- /*
- * Note: On -EAGAIN error only caller can retry on handle based calls
- * since file handle passed in no longer valid.
- */
- return rc;
-}
-
-int
-CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
- __u16 fid)
-{
- int rc = 0;
- int bytes_returned;
- struct smb_com_transaction_compr_ioctl_req *pSMB;
- struct smb_com_transaction_ioctl_rsp *pSMBr;
-
- cifs_dbg(FYI, "Set compression for %u\n", fid);
- rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT);
-
- pSMB->TotalParameterCount = 0;
- pSMB->TotalDataCount = cpu_to_le32(2);
- pSMB->MaxParameterCount = 0;
- pSMB->MaxDataCount = 0;
- pSMB->MaxSetupCount = 4;
- pSMB->Reserved = 0;
- pSMB->ParameterOffset = 0;
- pSMB->DataCount = cpu_to_le32(2);
- pSMB->DataOffset =
- cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req,
- compression_state) - 4); /* 84 */
- pSMB->SetupCount = 4;
- pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL);
- pSMB->ParameterCount = 0;
- pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION);
- pSMB->IsFsctl = 1; /* FSCTL */
- pSMB->IsRootFlag = 0;
- pSMB->Fid = fid; /* file handle always le */
- /* 3 byte pad, followed by 2 byte compress state */
- pSMB->ByteCount = cpu_to_le16(5);
- inc_rfc1001_len(pSMB, 5);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc)
- cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc);
-
- cifs_buf_release(pSMB);
-
- /*
- * Note: On -EAGAIN error only caller can retry on handle based calls
- * since file handle passed in no longer valid.
- */
- return rc;
-}
-
-
-#ifdef CONFIG_CIFS_POSIX
-
-#ifdef CONFIG_FS_POSIX_ACL
-/**
- * cifs_init_posix_acl - convert ACL from cifs to POSIX ACL format
- * @ace: POSIX ACL entry to store converted ACL into
- * @cifs_ace: ACL in cifs format
- *
- * Convert an Access Control Entry from wire format to local POSIX xattr
- * format.
- *
- * Note that the @cifs_uid member is used to store both {g,u}id_t.
- */
-static void cifs_init_posix_acl(struct posix_acl_entry *ace,
- struct cifs_posix_ace *cifs_ace)
-{
- /* u8 cifs fields do not need le conversion */
- ace->e_perm = cifs_ace->cifs_e_perm;
- ace->e_tag = cifs_ace->cifs_e_tag;
-
- switch (ace->e_tag) {
- case ACL_USER:
- ace->e_uid = make_kuid(&init_user_ns,
- le64_to_cpu(cifs_ace->cifs_uid));
- break;
- case ACL_GROUP:
- ace->e_gid = make_kgid(&init_user_ns,
- le64_to_cpu(cifs_ace->cifs_uid));
- break;
- }
- return;
-}
-
-/**
- * cifs_to_posix_acl - copy cifs ACL format to POSIX ACL format
- * @acl: ACLs returned in POSIX ACL format
- * @src: ACLs in cifs format
- * @acl_type: type of POSIX ACL requested
- * @size_of_data_area: size of SMB we got
- *
- * This function converts ACLs from cifs format to POSIX ACL format.
- * If @acl is NULL then the size of the buffer required to store POSIX ACLs in
- * their uapi format is returned.
- */
-static int cifs_to_posix_acl(struct posix_acl **acl, char *src,
- const int acl_type, const int size_of_data_area)
-{
- int size = 0;
- __u16 count;
- struct cifs_posix_ace *pACE;
- struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src;
- struct posix_acl *kacl = NULL;
- struct posix_acl_entry *pa, *pe;
-
- if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION)
- return -EOPNOTSUPP;
-
- if (acl_type == ACL_TYPE_ACCESS) {
- count = le16_to_cpu(cifs_acl->access_entry_count);
- pACE = &cifs_acl->ace_array[0];
- size = sizeof(struct cifs_posix_acl);
- size += sizeof(struct cifs_posix_ace) * count;
- /* check if we would go beyond end of SMB */
- if (size_of_data_area < size) {
- cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n",
- size_of_data_area, size);
- return -EINVAL;
- }
- } else if (acl_type == ACL_TYPE_DEFAULT) {
- count = le16_to_cpu(cifs_acl->access_entry_count);
- size = sizeof(struct cifs_posix_acl);
- size += sizeof(struct cifs_posix_ace) * count;
- /* skip past access ACEs to get to default ACEs */
- pACE = &cifs_acl->ace_array[count];
- count = le16_to_cpu(cifs_acl->default_entry_count);
- size += sizeof(struct cifs_posix_ace) * count;
- /* check if we would go beyond end of SMB */
- if (size_of_data_area < size)
- return -EINVAL;
- } else {
- /* illegal type */
- return -EINVAL;
- }
-
- /* Allocate number of POSIX ACLs to store in VFS format. */
- kacl = posix_acl_alloc(count, GFP_NOFS);
- if (!kacl)
- return -ENOMEM;
-
- FOREACH_ACL_ENTRY(pa, kacl, pe) {
- cifs_init_posix_acl(pa, pACE);
- pACE++;
- }
-
- *acl = kacl;
- return 0;
-}
-
-/**
- * cifs_init_ace - convert ACL entry from POSIX ACL to cifs format
- * @cifs_ace: the cifs ACL entry to store into
- * @local_ace: the POSIX ACL entry to convert
- */
-static void cifs_init_ace(struct cifs_posix_ace *cifs_ace,
- const struct posix_acl_entry *local_ace)
-{
- cifs_ace->cifs_e_perm = local_ace->e_perm;
- cifs_ace->cifs_e_tag = local_ace->e_tag;
-
- switch (local_ace->e_tag) {
- case ACL_USER:
- cifs_ace->cifs_uid =
- cpu_to_le64(from_kuid(&init_user_ns, local_ace->e_uid));
- break;
- case ACL_GROUP:
- cifs_ace->cifs_uid =
- cpu_to_le64(from_kgid(&init_user_ns, local_ace->e_gid));
- break;
- default:
- cifs_ace->cifs_uid = cpu_to_le64(-1);
- }
-}
-
-/**
- * posix_acl_to_cifs - convert ACLs from POSIX ACL to cifs format
- * @parm_data: ACLs in cifs format to conver to
- * @acl: ACLs in POSIX ACL format to convert from
- * @acl_type: the type of POSIX ACLs stored in @acl
- *
- * Return: the number cifs ACL entries after conversion
- */
-static __u16 posix_acl_to_cifs(char *parm_data, const struct posix_acl *acl,
- const int acl_type)
-{
- __u16 rc = 0;
- struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data;
- const struct posix_acl_entry *pa, *pe;
- int count;
- int i = 0;
-
- if ((acl == NULL) || (cifs_acl == NULL))
- return 0;
-
- count = acl->a_count;
- cifs_dbg(FYI, "setting acl with %d entries\n", count);
-
- /*
- * Note that the uapi POSIX ACL version is verified by the VFS and is
- * independent of the cifs ACL version. Changing the POSIX ACL version
- * is a uapi change and if it's changed we will pass down the POSIX ACL
- * version in struct posix_acl from the VFS. For now there's really
- * only one that all filesystems know how to deal with.
- */
- cifs_acl->version = cpu_to_le16(1);
- if (acl_type == ACL_TYPE_ACCESS) {
- cifs_acl->access_entry_count = cpu_to_le16(count);
- cifs_acl->default_entry_count = cpu_to_le16(0xFFFF);
- } else if (acl_type == ACL_TYPE_DEFAULT) {
- cifs_acl->default_entry_count = cpu_to_le16(count);
- cifs_acl->access_entry_count = cpu_to_le16(0xFFFF);
- } else {
- cifs_dbg(FYI, "unknown ACL type %d\n", acl_type);
- return 0;
- }
- FOREACH_ACL_ENTRY(pa, acl, pe) {
- cifs_init_ace(&cifs_acl->ace_array[i++], pa);
- }
- if (rc == 0) {
- rc = (__u16)(count * sizeof(struct cifs_posix_ace));
- rc += sizeof(struct cifs_posix_acl);
- /* BB add check to make sure ACL does not overflow SMB */
- }
- return rc;
-}
-
-int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
- const unsigned char *searchName, struct posix_acl **acl,
- const int acl_type, const struct nls_table *nls_codepage,
- int remap)
-{
-/* SMB_QUERY_POSIX_ACL */
- TRANSACTION2_QPI_REQ *pSMB = NULL;
- TRANSACTION2_QPI_RSP *pSMBr = NULL;
- int rc = 0;
- int bytes_returned;
- int name_len;
- __u16 params, byte_count;
-
- cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName);
-
-queryAclRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName,
- searchName, PATH_MAX, nls_codepage,
- remap);
- name_len++; /* trailing null */
- name_len *= 2;
- pSMB->FileName[name_len] = 0;
- pSMB->FileName[name_len+1] = 0;
- } else {
- name_len = copy_path_name(pSMB->FileName, searchName);
- }
-
- params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
- pSMB->TotalDataCount = 0;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find exact max data count below from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(4000);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- pSMB->ParameterOffset = cpu_to_le16(
- offsetof(struct smb_com_transaction2_qpi_req,
- InformationLevel) - 4);
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
- byte_count = params + 1 /* pad */ ;
- pSMB->TotalParameterCount = cpu_to_le16(params);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get);
- if (rc) {
- cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc);
- } else {
- /* decode response */
-
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- /* BB also check enough total bytes returned */
- if (rc || get_bcc(&pSMBr->hdr) < 2)
- rc = -EIO; /* bad smb */
- else {
- __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
- rc = cifs_to_posix_acl(acl,
- (char *)&pSMBr->hdr.Protocol+data_offset,
- acl_type, count);
- }
- }
- cifs_buf_release(pSMB);
- /*
- * The else branch after SendReceive() doesn't return EAGAIN so if we
- * allocated @acl in cifs_to_posix_acl() we are guaranteed to return
- * here and don't leak POSIX ACLs.
- */
- if (rc == -EAGAIN)
- goto queryAclRetry;
- return rc;
-}
-
-int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
- const unsigned char *fileName, const struct posix_acl *acl,
- const int acl_type, const struct nls_table *nls_codepage,
- int remap)
-{
- struct smb_com_transaction2_spi_req *pSMB = NULL;
- struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
- char *parm_data;
- int name_len;
- int rc = 0;
- int bytes_returned = 0;
- __u16 params, byte_count, data_count, param_offset, offset;
-
- cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName);
-setAclRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
- PATH_MAX, nls_codepage, remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- name_len = copy_path_name(pSMB->FileName, fileName);
- }
- params = 6 + name_len;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find max SMB size from sess */
- pSMB->MaxDataCount = cpu_to_le16(1000);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_spi_req,
- InformationLevel) - 4;
- offset = param_offset + params;
- parm_data = ((char *) &pSMB->hdr.Protocol) + offset;
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
-
- /* convert to on the wire format for POSIX ACL */
- data_count = posix_acl_to_cifs(parm_data, acl, acl_type);
-
- if (data_count == 0) {
- rc = -EOPNOTSUPP;
- goto setACLerrorExit;
- }
- pSMB->DataOffset = cpu_to_le16(offset);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
- pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL);
- byte_count = 3 /* pad */ + params + data_count;
- pSMB->DataCount = cpu_to_le16(data_count);
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc)
- cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc);
-
-setACLerrorExit:
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto setAclRetry;
- return rc;
-}
-#else
-int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon,
- const unsigned char *searchName, struct posix_acl **acl,
- const int acl_type, const struct nls_table *nls_codepage,
- int remap)
-{
- return -EOPNOTSUPP;
-}
-
-int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
- const unsigned char *fileName, const struct posix_acl *acl,
- const int acl_type, const struct nls_table *nls_codepage,
- int remap)
-{
- return -EOPNOTSUPP;
-}
-#endif /* CONFIG_FS_POSIX_ACL */
-
-int
-CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
- const int netfid, __u64 *pExtAttrBits, __u64 *pMask)
-{
- int rc = 0;
- struct smb_t2_qfi_req *pSMB = NULL;
- struct smb_t2_qfi_rsp *pSMBr = NULL;
- int bytes_returned;
- __u16 params, byte_count;
-
- cifs_dbg(FYI, "In GetExtAttr\n");
- if (tcon == NULL)
- return -ENODEV;
-
-GetExtAttrRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- params = 2 /* level */ + 2 /* fid */;
- pSMB->t2.TotalDataCount = 0;
- pSMB->t2.MaxParameterCount = cpu_to_le16(4);
- /* BB find exact max data count below from sess structure BB */
- pSMB->t2.MaxDataCount = cpu_to_le16(4000);
- pSMB->t2.MaxSetupCount = 0;
- pSMB->t2.Reserved = 0;
- pSMB->t2.Flags = 0;
- pSMB->t2.Timeout = 0;
- pSMB->t2.Reserved2 = 0;
- pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
- Fid) - 4);
- pSMB->t2.DataCount = 0;
- pSMB->t2.DataOffset = 0;
- pSMB->t2.SetupCount = 1;
- pSMB->t2.Reserved3 = 0;
- pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
- byte_count = params + 1 /* pad */ ;
- pSMB->t2.TotalParameterCount = cpu_to_le16(params);
- pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
- pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS);
- pSMB->Pad = 0;
- pSMB->Fid = netfid;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->t2.ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "error %d in GetExtAttr\n", rc);
- } else {
- /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- /* BB also check enough total bytes returned */
- if (rc || get_bcc(&pSMBr->hdr) < 2)
- /* If rc should we check for EOPNOSUPP and
- disable the srvino flag? or in caller? */
- rc = -EIO; /* bad smb */
- else {
- __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
- struct file_chattr_info *pfinfo;
-
- if (count != 16) {
- cifs_dbg(FYI, "Invalid size ret in GetExtAttr\n");
- rc = -EIO;
- goto GetExtAttrOut;
- }
- pfinfo = (struct file_chattr_info *)
- (data_offset + (char *) &pSMBr->hdr.Protocol);
- *pExtAttrBits = le64_to_cpu(pfinfo->mode);
- *pMask = le64_to_cpu(pfinfo->mask);
- }
- }
-GetExtAttrOut:
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto GetExtAttrRetry;
- return rc;
-}
-
-#endif /* CONFIG_POSIX */
-
-/*
- * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that
- * all NT TRANSACTS that we init here have total parm and data under about 400
- * bytes (to fit in small cifs buffer size), which is the case so far, it
- * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of
- * returned setup area) and MaxParameterCount (returned parms size) must be set
- * by caller
- */
-static int
-smb_init_nttransact(const __u16 sub_command, const int setup_count,
- const int parm_len, struct cifs_tcon *tcon,
- void **ret_buf)
-{
- int rc;
- __u32 temp_offset;
- struct smb_com_ntransact_req *pSMB;
-
- rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon,
- (void **)&pSMB);
- if (rc)
- return rc;
- *ret_buf = (void *)pSMB;
- pSMB->Reserved = 0;
- pSMB->TotalParameterCount = cpu_to_le32(parm_len);
- pSMB->TotalDataCount = 0;
- pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->DataCount = pSMB->TotalDataCount;
- temp_offset = offsetof(struct smb_com_ntransact_req, Parms) +
- (setup_count * 2) - 4 /* for rfc1001 length itself */;
- pSMB->ParameterOffset = cpu_to_le32(temp_offset);
- pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len);
- pSMB->SetupCount = setup_count; /* no need to le convert byte fields */
- pSMB->SubCommand = cpu_to_le16(sub_command);
- return 0;
-}
-
-static int
-validate_ntransact(char *buf, char **ppparm, char **ppdata,
- __u32 *pparmlen, __u32 *pdatalen)
-{
- char *end_of_smb;
- __u32 data_count, data_offset, parm_count, parm_offset;
- struct smb_com_ntransact_rsp *pSMBr;
- u16 bcc;
-
- *pdatalen = 0;
- *pparmlen = 0;
-
- if (buf == NULL)
- return -EINVAL;
-
- pSMBr = (struct smb_com_ntransact_rsp *)buf;
-
- bcc = get_bcc(&pSMBr->hdr);
- end_of_smb = 2 /* sizeof byte count */ + bcc +
- (char *)&pSMBr->ByteCount;
-
- data_offset = le32_to_cpu(pSMBr->DataOffset);
- data_count = le32_to_cpu(pSMBr->DataCount);
- parm_offset = le32_to_cpu(pSMBr->ParameterOffset);
- parm_count = le32_to_cpu(pSMBr->ParameterCount);
-
- *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset;
- *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset;
-
- /* should we also check that parm and data areas do not overlap? */
- if (*ppparm > end_of_smb) {
- cifs_dbg(FYI, "parms start after end of smb\n");
- return -EINVAL;
- } else if (parm_count + *ppparm > end_of_smb) {
- cifs_dbg(FYI, "parm end after end of smb\n");
- return -EINVAL;
- } else if (*ppdata > end_of_smb) {
- cifs_dbg(FYI, "data starts after end of smb\n");
- return -EINVAL;
- } else if (data_count + *ppdata > end_of_smb) {
- cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n",
- *ppdata, data_count, (data_count + *ppdata),
- end_of_smb, pSMBr);
- return -EINVAL;
- } else if (parm_count + data_count > bcc) {
- cifs_dbg(FYI, "parm count and data count larger than SMB\n");
- return -EINVAL;
- }
- *pdatalen = data_count;
- *pparmlen = parm_count;
- return 0;
-}
-
-/* Get Security Descriptor (by handle) from remote server for a file or dir */
-int
-CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid,
- struct cifs_ntsd **acl_inf, __u32 *pbuflen)
-{
- int rc = 0;
- int buf_type = 0;
- QUERY_SEC_DESC_REQ *pSMB;
- struct kvec iov[1];
- struct kvec rsp_iov;
-
- cifs_dbg(FYI, "GetCifsACL\n");
-
- *pbuflen = 0;
- *acl_inf = NULL;
-
- rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0,
- 8 /* parm len */, tcon, (void **) &pSMB);
- if (rc)
- return rc;
-
- pSMB->MaxParameterCount = cpu_to_le32(4);
- /* BB TEST with big acls that might need to be e.g. larger than 16K */
- pSMB->MaxSetupCount = 0;
- pSMB->Fid = fid; /* file handle always le */
- pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP |
- CIFS_ACL_DACL);
- pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */
- inc_rfc1001_len(pSMB, 11);
- iov[0].iov_base = (char *)pSMB;
- iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4;
-
- rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type,
- 0, &rsp_iov);
- cifs_small_buf_release(pSMB);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get);
- if (rc) {
- cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc);
- } else { /* decode response */
- __le32 *parm;
- __u32 parm_len;
- __u32 acl_len;
- struct smb_com_ntransact_rsp *pSMBr;
- char *pdata;
-
-/* validate_nttransact */
- rc = validate_ntransact(rsp_iov.iov_base, (char **)&parm,
- &pdata, &parm_len, pbuflen);
- if (rc)
- goto qsec_out;
- pSMBr = (struct smb_com_ntransact_rsp *)rsp_iov.iov_base;
-
- cifs_dbg(FYI, "smb %p parm %p data %p\n",
- pSMBr, parm, *acl_inf);
-
- if (le32_to_cpu(pSMBr->ParameterCount) != 4) {
- rc = -EIO; /* bad smb */
- *pbuflen = 0;
- goto qsec_out;
- }
-
-/* BB check that data area is minimum length and as big as acl_len */
-
- acl_len = le32_to_cpu(*parm);
- if (acl_len != *pbuflen) {
- cifs_dbg(VFS, "acl length %d does not match %d\n",
- acl_len, *pbuflen);
- if (*pbuflen > acl_len)
- *pbuflen = acl_len;
- }
-
- /* check if buffer is big enough for the acl
- header followed by the smallest SID */
- if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) ||
- (*pbuflen >= 64 * 1024)) {
- cifs_dbg(VFS, "bad acl length %d\n", *pbuflen);
- rc = -EINVAL;
- *pbuflen = 0;
- } else {
- *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL);
- if (*acl_inf == NULL) {
- *pbuflen = 0;
- rc = -ENOMEM;
- }
- }
- }
-qsec_out:
- free_rsp_buf(buf_type, rsp_iov.iov_base);
- return rc;
-}
-
-int
-CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid,
- struct cifs_ntsd *pntsd, __u32 acllen, int aclflag)
-{
- __u16 byte_count, param_count, data_count, param_offset, data_offset;
- int rc = 0;
- int bytes_returned = 0;
- SET_SEC_DESC_REQ *pSMB = NULL;
- void *pSMBr;
-
-setCifsAclRetry:
- rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr);
- if (rc)
- return rc;
-
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
-
- param_count = 8;
- param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4;
- data_count = acllen;
- data_offset = param_offset + param_count;
- byte_count = 3 /* pad */ + param_count;
-
- pSMB->DataCount = cpu_to_le32(data_count);
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->MaxParameterCount = cpu_to_le32(4);
- pSMB->MaxDataCount = cpu_to_le32(16384);
- pSMB->ParameterCount = cpu_to_le32(param_count);
- pSMB->ParameterOffset = cpu_to_le32(param_offset);
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->DataOffset = cpu_to_le32(data_offset);
- pSMB->SetupCount = 0;
- pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC);
- pSMB->ByteCount = cpu_to_le16(byte_count+data_count);
-
- pSMB->Fid = fid; /* file handle always le */
- pSMB->Reserved2 = 0;
- pSMB->AclFlags = cpu_to_le32(aclflag);
-
- if (pntsd && acllen) {
- memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) +
- data_offset, pntsd, acllen);
- inc_rfc1001_len(pSMB, byte_count + data_count);
- } else
- inc_rfc1001_len(pSMB, byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
-
- cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n",
- bytes_returned, rc);
- if (rc)
- cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc);
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto setCifsAclRetry;
-
- return (rc);
-}
-
-
-/* Legacy Query Path Information call for lookup to old servers such
- as Win9x/WinME */
-int
-SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
- const char *search_name, FILE_ALL_INFO *data,
- const struct nls_table *nls_codepage, int remap)
-{
- QUERY_INFORMATION_REQ *pSMB;
- QUERY_INFORMATION_RSP *pSMBr;
- int rc = 0;
- int bytes_returned;
- int name_len;
-
- cifs_dbg(FYI, "In SMBQPath path %s\n", search_name);
-QInfRetry:
- rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName,
- search_name, PATH_MAX, nls_codepage,
- remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- name_len = copy_path_name(pSMB->FileName, search_name);
- }
- pSMB->BufferFormat = 0x04;
- name_len++; /* account for buffer type byte */
- inc_rfc1001_len(pSMB, (__u16)name_len);
- pSMB->ByteCount = cpu_to_le16(name_len);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc);
- } else if (data) {
- struct timespec64 ts;
- __u32 time = le32_to_cpu(pSMBr->last_write_time);
-
- /* decode response */
- /* BB FIXME - add time zone adjustment BB */
- memset(data, 0, sizeof(FILE_ALL_INFO));
- ts.tv_nsec = 0;
- ts.tv_sec = time;
- /* decode time fields */
- data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts));
- data->LastWriteTime = data->ChangeTime;
- data->LastAccessTime = 0;
- data->AllocationSize =
- cpu_to_le64(le32_to_cpu(pSMBr->size));
- data->EndOfFile = data->AllocationSize;
- data->Attributes =
- cpu_to_le32(le16_to_cpu(pSMBr->attr));
- } else
- rc = -EIO; /* bad buffer passed in */
-
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto QInfRetry;
-
- return rc;
-}
-
-int
-CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
- u16 netfid, FILE_ALL_INFO *pFindData)
-{
- struct smb_t2_qfi_req *pSMB = NULL;
- struct smb_t2_qfi_rsp *pSMBr = NULL;
- int rc = 0;
- int bytes_returned;
- __u16 params, byte_count;
-
-QFileInfoRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- params = 2 /* level */ + 2 /* fid */;
- pSMB->t2.TotalDataCount = 0;
- pSMB->t2.MaxParameterCount = cpu_to_le16(4);
- /* BB find exact max data count below from sess structure BB */
- pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
- pSMB->t2.MaxSetupCount = 0;
- pSMB->t2.Reserved = 0;
- pSMB->t2.Flags = 0;
- pSMB->t2.Timeout = 0;
- pSMB->t2.Reserved2 = 0;
- pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
- Fid) - 4);
- pSMB->t2.DataCount = 0;
- pSMB->t2.DataOffset = 0;
- pSMB->t2.SetupCount = 1;
- pSMB->t2.Reserved3 = 0;
- pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
- byte_count = params + 1 /* pad */ ;
- pSMB->t2.TotalParameterCount = cpu_to_le16(params);
- pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
- pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
- pSMB->Pad = 0;
- pSMB->Fid = netfid;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->t2.ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "Send error in QFileInfo = %d\n", rc);
- } else { /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
-
- if (rc) /* BB add auto retry on EOPNOTSUPP? */
- rc = -EIO;
- else if (get_bcc(&pSMBr->hdr) < 40)
- rc = -EIO; /* bad smb */
- else if (pFindData) {
- __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- memcpy((char *) pFindData,
- (char *) &pSMBr->hdr.Protocol +
- data_offset, sizeof(FILE_ALL_INFO));
- } else
- rc = -ENOMEM;
- }
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto QFileInfoRetry;
-
- return rc;
-}
-
-int
-CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
- const char *search_name, FILE_ALL_INFO *data,
- int legacy /* old style infolevel */,
- const struct nls_table *nls_codepage, int remap)
-{
- /* level 263 SMB_QUERY_FILE_ALL_INFO */
- TRANSACTION2_QPI_REQ *pSMB = NULL;
- TRANSACTION2_QPI_RSP *pSMBr = NULL;
- int rc = 0;
- int bytes_returned;
- int name_len;
- __u16 params, byte_count;
-
- /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */
-QPathInfoRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name,
- PATH_MAX, nls_codepage, remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- name_len = copy_path_name(pSMB->FileName, search_name);
- }
-
- params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */;
- pSMB->TotalDataCount = 0;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find exact max SMB PDU from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(4000);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- pSMB->ParameterOffset = cpu_to_le16(offsetof(
- struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
- byte_count = params + 1 /* pad */ ;
- pSMB->TotalParameterCount = cpu_to_le16(params);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- if (legacy)
- pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD);
- else
- pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc);
- } else { /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
-
- if (rc) /* BB add auto retry on EOPNOTSUPP? */
- rc = -EIO;
- else if (!legacy && get_bcc(&pSMBr->hdr) < 40)
- rc = -EIO; /* bad smb */
- else if (legacy && get_bcc(&pSMBr->hdr) < 24)
- rc = -EIO; /* 24 or 26 expected but we do not read
- last field */
- else if (data) {
- int size;
- __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
-
- /*
- * On legacy responses we do not read the last field,
- * EAsize, fortunately since it varies by subdialect and
- * also note it differs on Set vs Get, ie two bytes or 4
- * bytes depending but we don't care here.
- */
- if (legacy)
- size = sizeof(FILE_INFO_STANDARD);
- else
- size = sizeof(FILE_ALL_INFO);
- memcpy((char *) data, (char *) &pSMBr->hdr.Protocol +
- data_offset, size);
- } else
- rc = -ENOMEM;
- }
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto QPathInfoRetry;
-
- return rc;
-}
-
-int
-CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
- u16 netfid, FILE_UNIX_BASIC_INFO *pFindData)
-{
- struct smb_t2_qfi_req *pSMB = NULL;
- struct smb_t2_qfi_rsp *pSMBr = NULL;
- int rc = 0;
- int bytes_returned;
- __u16 params, byte_count;
-
-UnixQFileInfoRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- params = 2 /* level */ + 2 /* fid */;
- pSMB->t2.TotalDataCount = 0;
- pSMB->t2.MaxParameterCount = cpu_to_le16(4);
- /* BB find exact max data count below from sess structure BB */
- pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
- pSMB->t2.MaxSetupCount = 0;
- pSMB->t2.Reserved = 0;
- pSMB->t2.Flags = 0;
- pSMB->t2.Timeout = 0;
- pSMB->t2.Reserved2 = 0;
- pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
- Fid) - 4);
- pSMB->t2.DataCount = 0;
- pSMB->t2.DataOffset = 0;
- pSMB->t2.SetupCount = 1;
- pSMB->t2.Reserved3 = 0;
- pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
- byte_count = params + 1 /* pad */ ;
- pSMB->t2.TotalParameterCount = cpu_to_le16(params);
- pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
- pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
- pSMB->Pad = 0;
- pSMB->Fid = netfid;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->t2.ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "Send error in UnixQFileInfo = %d\n", rc);
- } else { /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
-
- if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) {
- cifs_dbg(VFS, "Malformed FILE_UNIX_BASIC_INFO response. Unix Extensions can be disabled on mount by specifying the nosfu mount option.\n");
- rc = -EIO; /* bad smb */
- } else {
- __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- memcpy((char *) pFindData,
- (char *) &pSMBr->hdr.Protocol +
- data_offset,
- sizeof(FILE_UNIX_BASIC_INFO));
- }
- }
-
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto UnixQFileInfoRetry;
-
- return rc;
-}
-
-int
-CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
- const unsigned char *searchName,
- FILE_UNIX_BASIC_INFO *pFindData,
- const struct nls_table *nls_codepage, int remap)
-{
-/* SMB_QUERY_FILE_UNIX_BASIC */
- TRANSACTION2_QPI_REQ *pSMB = NULL;
- TRANSACTION2_QPI_RSP *pSMBr = NULL;
- int rc = 0;
- int bytes_returned = 0;
- int name_len;
- __u16 params, byte_count;
-
- cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName);
-UnixQPathInfoRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName,
- PATH_MAX, nls_codepage, remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- name_len = copy_path_name(pSMB->FileName, searchName);
- }
-
- params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */;
- pSMB->TotalDataCount = 0;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find exact max SMB PDU from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(4000);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- pSMB->ParameterOffset = cpu_to_le16(offsetof(
- struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
- byte_count = params + 1 /* pad */ ;
- pSMB->TotalParameterCount = cpu_to_le16(params);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "Send error in UnixQPathInfo = %d\n", rc);
- } else { /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
-
- if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) {
- cifs_dbg(VFS, "Malformed FILE_UNIX_BASIC_INFO response. Unix Extensions can be disabled on mount by specifying the nosfu mount option.\n");
- rc = -EIO; /* bad smb */
- } else {
- __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- memcpy((char *) pFindData,
- (char *) &pSMBr->hdr.Protocol +
- data_offset,
- sizeof(FILE_UNIX_BASIC_INFO));
- }
- }
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto UnixQPathInfoRetry;
-
- return rc;
-}
-
-/* xid, tcon, searchName and codepage are input parms, rest are returned */
-int
-CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
- const char *searchName, struct cifs_sb_info *cifs_sb,
- __u16 *pnetfid, __u16 search_flags,
- struct cifs_search_info *psrch_inf, bool msearch)
-{
-/* level 257 SMB_ */
- TRANSACTION2_FFIRST_REQ *pSMB = NULL;
- TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
- T2_FFIRST_RSP_PARMS *parms;
- int rc = 0;
- int bytes_returned = 0;
- int name_len, remap;
- __u16 params, byte_count;
- struct nls_table *nls_codepage;
-
- cifs_dbg(FYI, "In FindFirst for %s\n", searchName);
-
-findFirstRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- nls_codepage = cifs_sb->local_nls;
- remap = cifs_remap(cifs_sb);
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName,
- PATH_MAX, nls_codepage, remap);
- /* We can not add the asterik earlier in case
- it got remapped to 0xF03A as if it were part of the
- directory name instead of a wildcard */
- name_len *= 2;
- if (msearch) {
- pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb);
- pSMB->FileName[name_len+1] = 0;
- pSMB->FileName[name_len+2] = '*';
- pSMB->FileName[name_len+3] = 0;
- name_len += 4; /* now the trailing null */
- /* null terminate just in case */
- pSMB->FileName[name_len] = 0;
- pSMB->FileName[name_len+1] = 0;
- name_len += 2;
- }
- } else {
- name_len = copy_path_name(pSMB->FileName, searchName);
- if (msearch) {
- if (WARN_ON_ONCE(name_len > PATH_MAX-2))
- name_len = PATH_MAX-2;
- /* overwrite nul byte */
- pSMB->FileName[name_len-1] = CIFS_DIR_SEP(cifs_sb);
- pSMB->FileName[name_len] = '*';
- pSMB->FileName[name_len+1] = 0;
- name_len += 2;
- }
- }
-
- params = 12 + name_len /* includes null */ ;
- pSMB->TotalDataCount = 0; /* no EAs */
- pSMB->MaxParameterCount = cpu_to_le16(10);
- pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- byte_count = params + 1 /* pad */ ;
- pSMB->TotalParameterCount = cpu_to_le16(params);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->ParameterOffset = cpu_to_le16(
- offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes)
- - 4);
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST);
- pSMB->SearchAttributes =
- cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
- ATTR_DIRECTORY);
- pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO));
- pSMB->SearchFlags = cpu_to_le16(search_flags);
- pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
-
- /* BB what should we set StorageType to? Does it matter? BB */
- pSMB->SearchStorageType = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst);
-
- if (rc) {/* BB add logic to retry regular search if Unix search
- rejected unexpectedly by server */
- /* BB Add code to handle unsupported level rc */
- cifs_dbg(FYI, "Error in FindFirst = %d\n", rc);
-
- cifs_buf_release(pSMB);
-
- /* BB eventually could optimize out free and realloc of buf */
- /* for this case */
- if (rc == -EAGAIN)
- goto findFirstRetry;
- } else { /* decode response */
- /* BB remember to free buffer if error BB */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc == 0) {
- unsigned int lnoff;
-
- if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
- psrch_inf->unicode = true;
- else
- psrch_inf->unicode = false;
-
- psrch_inf->ntwrk_buf_start = (char *)pSMBr;
- psrch_inf->smallBuf = false;
- psrch_inf->srch_entries_start =
- (char *) &pSMBr->hdr.Protocol +
- le16_to_cpu(pSMBr->t2.DataOffset);
- parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol +
- le16_to_cpu(pSMBr->t2.ParameterOffset));
-
- if (parms->EndofSearch)
- psrch_inf->endOfSearch = true;
- else
- psrch_inf->endOfSearch = false;
-
- psrch_inf->entries_in_buffer =
- le16_to_cpu(parms->SearchCount);
- psrch_inf->index_of_last_entry = 2 /* skip . and .. */ +
- psrch_inf->entries_in_buffer;
- lnoff = le16_to_cpu(parms->LastNameOffset);
- if (CIFSMaxBufSize < lnoff) {
- cifs_dbg(VFS, "ignoring corrupt resume name\n");
- psrch_inf->last_entry = NULL;
- return rc;
- }
-
- psrch_inf->last_entry = psrch_inf->srch_entries_start +
- lnoff;
-
- if (pnetfid)
- *pnetfid = parms->SearchHandle;
- } else {
- cifs_buf_release(pSMB);
- }
- }
-
- return rc;
-}
-
-int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
- __u16 searchHandle, __u16 search_flags,
- struct cifs_search_info *psrch_inf)
-{
- TRANSACTION2_FNEXT_REQ *pSMB = NULL;
- TRANSACTION2_FNEXT_RSP *pSMBr = NULL;
- T2_FNEXT_RSP_PARMS *parms;
- char *response_data;
- int rc = 0;
- int bytes_returned;
- unsigned int name_len;
- __u16 params, byte_count;
-
- cifs_dbg(FYI, "In FindNext\n");
-
- if (psrch_inf->endOfSearch)
- return -ENOENT;
-
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- params = 14; /* includes 2 bytes of null string, converted to LE below*/
- byte_count = 0;
- pSMB->TotalDataCount = 0; /* no EAs */
- pSMB->MaxParameterCount = cpu_to_le16(8);
- pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- pSMB->ParameterOffset = cpu_to_le16(
- offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4);
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT);
- pSMB->SearchHandle = searchHandle; /* always kept as le */
- pSMB->SearchCount =
- cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO));
- pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
- pSMB->ResumeKey = psrch_inf->resume_key;
- pSMB->SearchFlags = cpu_to_le16(search_flags);
-
- name_len = psrch_inf->resume_name_len;
- params += name_len;
- if (name_len < PATH_MAX) {
- memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len);
- byte_count += name_len;
- /* 14 byte parm len above enough for 2 byte null terminator */
- pSMB->ResumeFileName[name_len] = 0;
- pSMB->ResumeFileName[name_len+1] = 0;
- } else {
- rc = -EINVAL;
- goto FNext2_err_exit;
- }
- byte_count = params + 1 /* pad */ ;
- pSMB->TotalParameterCount = cpu_to_le16(params);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext);
- if (rc) {
- if (rc == -EBADF) {
- psrch_inf->endOfSearch = true;
- cifs_buf_release(pSMB);
- rc = 0; /* search probably was closed at end of search*/
- } else
- cifs_dbg(FYI, "FindNext returned = %d\n", rc);
- } else { /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
-
- if (rc == 0) {
- unsigned int lnoff;
-
- /* BB fixme add lock for file (srch_info) struct here */
- if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
- psrch_inf->unicode = true;
- else
- psrch_inf->unicode = false;
- response_data = (char *) &pSMBr->hdr.Protocol +
- le16_to_cpu(pSMBr->t2.ParameterOffset);
- parms = (T2_FNEXT_RSP_PARMS *)response_data;
- response_data = (char *)&pSMBr->hdr.Protocol +
- le16_to_cpu(pSMBr->t2.DataOffset);
- if (psrch_inf->smallBuf)
- cifs_small_buf_release(
- psrch_inf->ntwrk_buf_start);
- else
- cifs_buf_release(psrch_inf->ntwrk_buf_start);
- psrch_inf->srch_entries_start = response_data;
- psrch_inf->ntwrk_buf_start = (char *)pSMB;
- psrch_inf->smallBuf = false;
- if (parms->EndofSearch)
- psrch_inf->endOfSearch = true;
- else
- psrch_inf->endOfSearch = false;
- psrch_inf->entries_in_buffer =
- le16_to_cpu(parms->SearchCount);
- psrch_inf->index_of_last_entry +=
- psrch_inf->entries_in_buffer;
- lnoff = le16_to_cpu(parms->LastNameOffset);
- if (CIFSMaxBufSize < lnoff) {
- cifs_dbg(VFS, "ignoring corrupt resume name\n");
- psrch_inf->last_entry = NULL;
- return rc;
- } else
- psrch_inf->last_entry =
- psrch_inf->srch_entries_start + lnoff;
-
-/* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n",
- psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */
-
- /* BB fixme add unlock here */
- }
-
- }
-
- /* BB On error, should we leave previous search buf (and count and
- last entry fields) intact or free the previous one? */
-
- /* Note: On -EAGAIN error only caller can retry on handle based calls
- since file handle passed in no longer valid */
-FNext2_err_exit:
- if (rc != 0)
- cifs_buf_release(pSMB);
- return rc;
-}
-
-int
-CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
- const __u16 searchHandle)
-{
- int rc = 0;
- FINDCLOSE_REQ *pSMB = NULL;
-
- cifs_dbg(FYI, "In CIFSSMBFindClose\n");
- rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB);
-
- /* no sense returning error if session restarted
- as file handle has been closed */
- if (rc == -EAGAIN)
- return 0;
- if (rc)
- return rc;
-
- pSMB->FileID = searchHandle;
- pSMB->ByteCount = 0;
- rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
- cifs_small_buf_release(pSMB);
- if (rc)
- cifs_dbg(VFS, "Send error in FindClose = %d\n", rc);
-
- cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose);
-
- /* Since session is dead, search handle closed on server already */
- if (rc == -EAGAIN)
- rc = 0;
-
- return rc;
-}
-
-int
-CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
- const char *search_name, __u64 *inode_number,
- const struct nls_table *nls_codepage, int remap)
-{
- int rc = 0;
- TRANSACTION2_QPI_REQ *pSMB = NULL;
- TRANSACTION2_QPI_RSP *pSMBr = NULL;
- int name_len, bytes_returned;
- __u16 params, byte_count;
-
- cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name);
- if (tcon == NULL)
- return -ENODEV;
-
-GetInodeNumberRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName,
- search_name, PATH_MAX, nls_codepage,
- remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- name_len = copy_path_name(pSMB->FileName, search_name);
- }
-
- params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
- pSMB->TotalDataCount = 0;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find exact max data count below from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(4000);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- pSMB->ParameterOffset = cpu_to_le16(offsetof(
- struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
- byte_count = params + 1 /* pad */ ;
- pSMB->TotalParameterCount = cpu_to_le16(params);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc);
- } else {
- /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- /* BB also check enough total bytes returned */
- if (rc || get_bcc(&pSMBr->hdr) < 2)
- /* If rc should we check for EOPNOSUPP and
- disable the srvino flag? or in caller? */
- rc = -EIO; /* bad smb */
- else {
- __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
- struct file_internal_info *pfinfo;
- /* BB Do we need a cast or hash here ? */
- if (count < 8) {
- cifs_dbg(FYI, "Invalid size ret in QryIntrnlInf\n");
- rc = -EIO;
- goto GetInodeNumOut;
- }
- pfinfo = (struct file_internal_info *)
- (data_offset + (char *) &pSMBr->hdr.Protocol);
- *inode_number = le64_to_cpu(pfinfo->UniqueId);
- }
- }
-GetInodeNumOut:
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto GetInodeNumberRetry;
- return rc;
-}
-
-int
-CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
- const char *search_name, struct dfs_info3_param **target_nodes,
- unsigned int *num_of_nodes,
- const struct nls_table *nls_codepage, int remap)
-{
-/* TRANS2_GET_DFS_REFERRAL */
- TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL;
- TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL;
- int rc = 0;
- int bytes_returned;
- int name_len;
- __u16 params, byte_count;
- *num_of_nodes = 0;
- *target_nodes = NULL;
-
- cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name);
- if (ses == NULL || ses->tcon_ipc == NULL)
- return -ENODEV;
-
-getDFSRetry:
- /*
- * Use smb_init_no_reconnect() instead of smb_init() as
- * CIFSGetDFSRefer() may be called from cifs_reconnect_tcon() and thus
- * causing an infinite recursion.
- */
- rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, ses->tcon_ipc,
- (void **)&pSMB, (void **)&pSMBr);
- if (rc)
- return rc;
-
- /* server pointer checked in called function,
- but should never be null here anyway */
- pSMB->hdr.Mid = get_next_mid(ses->server);
- pSMB->hdr.Tid = ses->tcon_ipc->tid;
- pSMB->hdr.Uid = ses->Suid;
- if (ses->capabilities & CAP_STATUS32)
- pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS;
- if (ses->capabilities & CAP_DFS)
- pSMB->hdr.Flags2 |= SMBFLG2_DFS;
-
- if (ses->capabilities & CAP_UNICODE) {
- pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->RequestFileName,
- search_name, PATH_MAX, nls_codepage,
- remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else { /* BB improve the check for buffer overruns BB */
- name_len = copy_path_name(pSMB->RequestFileName, search_name);
- }
-
- if (ses->server->sign)
- pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
-
- pSMB->hdr.Uid = ses->Suid;
-
- params = 2 /* level */ + name_len /*includes null */ ;
- pSMB->TotalDataCount = 0;
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->MaxParameterCount = 0;
- /* BB find exact max SMB PDU from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(4000);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- pSMB->ParameterOffset = cpu_to_le16(offsetof(
- struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL);
- byte_count = params + 3 /* pad */ ;
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->MaxReferralLevel = cpu_to_le16(3);
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc);
- goto GetDFSRefExit;
- }
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
-
- /* BB Also check if enough total bytes returned? */
- if (rc || get_bcc(&pSMBr->hdr) < 17) {
- rc = -EIO; /* bad smb */
- goto GetDFSRefExit;
- }
-
- cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n",
- get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset));
-
- /* parse returned result into more usable form */
- rc = parse_dfs_referrals(&pSMBr->dfs_data,
- le16_to_cpu(pSMBr->t2.DataCount),
- num_of_nodes, target_nodes, nls_codepage,
- remap, search_name,
- (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) != 0);
-
-GetDFSRefExit:
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto getDFSRetry;
-
- return rc;
-}
-
-/* Query File System Info such as free space to old servers such as Win 9x */
-int
-SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
- struct kstatfs *FSData)
-{
-/* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */
- TRANSACTION2_QFSI_REQ *pSMB = NULL;
- TRANSACTION2_QFSI_RSP *pSMBr = NULL;
- FILE_SYSTEM_ALLOC_INFO *response_data;
- int rc = 0;
- int bytes_returned = 0;
- __u16 params, byte_count;
-
- cifs_dbg(FYI, "OldQFSInfo\n");
-oldQFSInfoRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- params = 2; /* level */
- pSMB->TotalDataCount = 0;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- pSMB->MaxDataCount = cpu_to_le16(1000);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- byte_count = params + 1 /* pad */ ;
- pSMB->TotalParameterCount = cpu_to_le16(params);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->ParameterOffset = cpu_to_le16(offsetof(
- struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
- pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION);
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc);
- } else { /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
-
- if (rc || get_bcc(&pSMBr->hdr) < 18)
- rc = -EIO; /* bad smb */
- else {
- __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n",
- get_bcc(&pSMBr->hdr), data_offset);
-
- response_data = (FILE_SYSTEM_ALLOC_INFO *)
- (((char *) &pSMBr->hdr.Protocol) + data_offset);
- FSData->f_bsize =
- le16_to_cpu(response_data->BytesPerSector) *
- le32_to_cpu(response_data->
- SectorsPerAllocationUnit);
- /*
- * much prefer larger but if server doesn't report
- * a valid size than 4K is a reasonable minimum
- */
- if (FSData->f_bsize < 512)
- FSData->f_bsize = 4096;
-
- FSData->f_blocks =
- le32_to_cpu(response_data->TotalAllocationUnits);
- FSData->f_bfree = FSData->f_bavail =
- le32_to_cpu(response_data->FreeAllocationUnits);
- cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n",
- (unsigned long long)FSData->f_blocks,
- (unsigned long long)FSData->f_bfree,
- FSData->f_bsize);
- }
- }
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto oldQFSInfoRetry;
-
- return rc;
-}
-
-int
-CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
- struct kstatfs *FSData)
-{
-/* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */
- TRANSACTION2_QFSI_REQ *pSMB = NULL;
- TRANSACTION2_QFSI_RSP *pSMBr = NULL;
- FILE_SYSTEM_INFO *response_data;
- int rc = 0;
- int bytes_returned = 0;
- __u16 params, byte_count;
-
- cifs_dbg(FYI, "In QFSInfo\n");
-QFSInfoRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- params = 2; /* level */
- pSMB->TotalDataCount = 0;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- pSMB->MaxDataCount = cpu_to_le16(1000);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- byte_count = params + 1 /* pad */ ;
- pSMB->TotalParameterCount = cpu_to_le16(params);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->ParameterOffset = cpu_to_le16(offsetof(
- struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
- pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO);
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc);
- } else { /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
-
- if (rc || get_bcc(&pSMBr->hdr) < 24)
- rc = -EIO; /* bad smb */
- else {
- __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
-
- response_data =
- (FILE_SYSTEM_INFO
- *) (((char *) &pSMBr->hdr.Protocol) +
- data_offset);
- FSData->f_bsize =
- le32_to_cpu(response_data->BytesPerSector) *
- le32_to_cpu(response_data->
- SectorsPerAllocationUnit);
- /*
- * much prefer larger but if server doesn't report
- * a valid size than 4K is a reasonable minimum
- */
- if (FSData->f_bsize < 512)
- FSData->f_bsize = 4096;
-
- FSData->f_blocks =
- le64_to_cpu(response_data->TotalAllocationUnits);
- FSData->f_bfree = FSData->f_bavail =
- le64_to_cpu(response_data->FreeAllocationUnits);
- cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n",
- (unsigned long long)FSData->f_blocks,
- (unsigned long long)FSData->f_bfree,
- FSData->f_bsize);
- }
- }
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto QFSInfoRetry;
-
- return rc;
-}
-
-int
-CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon)
-{
-/* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */
- TRANSACTION2_QFSI_REQ *pSMB = NULL;
- TRANSACTION2_QFSI_RSP *pSMBr = NULL;
- FILE_SYSTEM_ATTRIBUTE_INFO *response_data;
- int rc = 0;
- int bytes_returned = 0;
- __u16 params, byte_count;
-
- cifs_dbg(FYI, "In QFSAttributeInfo\n");
-QFSAttributeRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- params = 2; /* level */
- pSMB->TotalDataCount = 0;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find exact max SMB PDU from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(1000);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- byte_count = params + 1 /* pad */ ;
- pSMB->TotalParameterCount = cpu_to_le16(params);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->ParameterOffset = cpu_to_le16(offsetof(
- struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
- pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO);
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc);
- } else { /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
-
- if (rc || get_bcc(&pSMBr->hdr) < 13) {
- /* BB also check if enough bytes returned */
- rc = -EIO; /* bad smb */
- } else {
- __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- response_data =
- (FILE_SYSTEM_ATTRIBUTE_INFO
- *) (((char *) &pSMBr->hdr.Protocol) +
- data_offset);
- memcpy(&tcon->fsAttrInfo, response_data,
- sizeof(FILE_SYSTEM_ATTRIBUTE_INFO));
- }
- }
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto QFSAttributeRetry;
-
- return rc;
-}
-
-int
-CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon)
-{
-/* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */
- TRANSACTION2_QFSI_REQ *pSMB = NULL;
- TRANSACTION2_QFSI_RSP *pSMBr = NULL;
- FILE_SYSTEM_DEVICE_INFO *response_data;
- int rc = 0;
- int bytes_returned = 0;
- __u16 params, byte_count;
-
- cifs_dbg(FYI, "In QFSDeviceInfo\n");
-QFSDeviceRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- params = 2; /* level */
- pSMB->TotalDataCount = 0;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find exact max SMB PDU from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(1000);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- byte_count = params + 1 /* pad */ ;
- pSMB->TotalParameterCount = cpu_to_le16(params);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->ParameterOffset = cpu_to_le16(offsetof(
- struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
-
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
- pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO);
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc);
- } else { /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
-
- if (rc || get_bcc(&pSMBr->hdr) <
- sizeof(FILE_SYSTEM_DEVICE_INFO))
- rc = -EIO; /* bad smb */
- else {
- __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- response_data =
- (FILE_SYSTEM_DEVICE_INFO *)
- (((char *) &pSMBr->hdr.Protocol) +
- data_offset);
- memcpy(&tcon->fsDevInfo, response_data,
- sizeof(FILE_SYSTEM_DEVICE_INFO));
- }
- }
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto QFSDeviceRetry;
-
- return rc;
-}
-
-int
-CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon)
-{
-/* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */
- TRANSACTION2_QFSI_REQ *pSMB = NULL;
- TRANSACTION2_QFSI_RSP *pSMBr = NULL;
- FILE_SYSTEM_UNIX_INFO *response_data;
- int rc = 0;
- int bytes_returned = 0;
- __u16 params, byte_count;
-
- cifs_dbg(FYI, "In QFSUnixInfo\n");
-QFSUnixRetry:
- rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon,
- (void **) &pSMB, (void **) &pSMBr);
- if (rc)
- return rc;
-
- params = 2; /* level */
- pSMB->TotalDataCount = 0;
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find exact max SMB PDU from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(100);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- byte_count = params + 1 /* pad */ ;
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
- smb_com_transaction2_qfsi_req, InformationLevel) - 4);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
- pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO);
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc);
- } else { /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
-
- if (rc || get_bcc(&pSMBr->hdr) < 13) {
- rc = -EIO; /* bad smb */
- } else {
- __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- response_data =
- (FILE_SYSTEM_UNIX_INFO
- *) (((char *) &pSMBr->hdr.Protocol) +
- data_offset);
- memcpy(&tcon->fsUnixInfo, response_data,
- sizeof(FILE_SYSTEM_UNIX_INFO));
- }
- }
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto QFSUnixRetry;
-
-
- return rc;
-}
-
-int
-CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap)
-{
-/* level 0x200 SMB_SET_CIFS_UNIX_INFO */
- TRANSACTION2_SETFSI_REQ *pSMB = NULL;
- TRANSACTION2_SETFSI_RSP *pSMBr = NULL;
- int rc = 0;
- int bytes_returned = 0;
- __u16 params, param_offset, offset, byte_count;
-
- cifs_dbg(FYI, "In SETFSUnixInfo\n");
-SETFSUnixRetry:
- /* BB switch to small buf init to save memory */
- rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon,
- (void **) &pSMB, (void **) &pSMBr);
- if (rc)
- return rc;
-
- params = 4; /* 2 bytes zero followed by info level. */
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum)
- - 4;
- offset = param_offset + params;
-
- pSMB->MaxParameterCount = cpu_to_le16(4);
- /* BB find exact max SMB PDU from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(100);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION);
- byte_count = 1 /* pad */ + params + 12;
-
- pSMB->DataCount = cpu_to_le16(12);
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
- pSMB->DataOffset = cpu_to_le16(offset);
-
- /* Params. */
- pSMB->FileNum = 0;
- pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO);
-
- /* Data. */
- pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION);
- pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION);
- pSMB->ClientUnixCap = cpu_to_le64(cap);
-
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc);
- } else { /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc)
- rc = -EIO; /* bad smb */
- }
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto SETFSUnixRetry;
-
- return rc;
-}
-
-
-
-int
-CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
- struct kstatfs *FSData)
-{
-/* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */
- TRANSACTION2_QFSI_REQ *pSMB = NULL;
- TRANSACTION2_QFSI_RSP *pSMBr = NULL;
- FILE_SYSTEM_POSIX_INFO *response_data;
- int rc = 0;
- int bytes_returned = 0;
- __u16 params, byte_count;
-
- cifs_dbg(FYI, "In QFSPosixInfo\n");
-QFSPosixRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- params = 2; /* level */
- pSMB->TotalDataCount = 0;
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find exact max SMB PDU from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(100);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- byte_count = params + 1 /* pad */ ;
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
- smb_com_transaction2_qfsi_req, InformationLevel) - 4);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
- pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO);
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc);
- } else { /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
-
- if (rc || get_bcc(&pSMBr->hdr) < 13) {
- rc = -EIO; /* bad smb */
- } else {
- __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- response_data =
- (FILE_SYSTEM_POSIX_INFO
- *) (((char *) &pSMBr->hdr.Protocol) +
- data_offset);
- FSData->f_bsize =
- le32_to_cpu(response_data->BlockSize);
- /*
- * much prefer larger but if server doesn't report
- * a valid size than 4K is a reasonable minimum
- */
- if (FSData->f_bsize < 512)
- FSData->f_bsize = 4096;
-
- FSData->f_blocks =
- le64_to_cpu(response_data->TotalBlocks);
- FSData->f_bfree =
- le64_to_cpu(response_data->BlocksAvail);
- if (response_data->UserBlocksAvail == cpu_to_le64(-1)) {
- FSData->f_bavail = FSData->f_bfree;
- } else {
- FSData->f_bavail =
- le64_to_cpu(response_data->UserBlocksAvail);
- }
- if (response_data->TotalFileNodes != cpu_to_le64(-1))
- FSData->f_files =
- le64_to_cpu(response_data->TotalFileNodes);
- if (response_data->FreeFileNodes != cpu_to_le64(-1))
- FSData->f_ffree =
- le64_to_cpu(response_data->FreeFileNodes);
- }
- }
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto QFSPosixRetry;
-
- return rc;
-}
-
-
-/*
- * We can not use write of zero bytes trick to set file size due to need for
- * large file support. Also note that this SetPathInfo is preferred to
- * SetFileInfo based method in next routine which is only needed to work around
- * a sharing violation bugin Samba which this routine can run into.
- */
-int
-CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
- const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb,
- bool set_allocation)
-{
- struct smb_com_transaction2_spi_req *pSMB = NULL;
- struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
- struct file_end_of_file_info *parm_data;
- int name_len;
- int rc = 0;
- int bytes_returned = 0;
- int remap = cifs_remap(cifs_sb);
-
- __u16 params, byte_count, data_count, param_offset, offset;
-
- cifs_dbg(FYI, "In SetEOF\n");
-SetEOFRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name,
- PATH_MAX, cifs_sb->local_nls, remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- name_len = copy_path_name(pSMB->FileName, file_name);
- }
- params = 6 + name_len;
- data_count = sizeof(struct file_end_of_file_info);
- pSMB->MaxParameterCount = cpu_to_le16(2);
- pSMB->MaxDataCount = cpu_to_le16(4100);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_spi_req,
- InformationLevel) - 4;
- offset = param_offset + params;
- if (set_allocation) {
- if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
- pSMB->InformationLevel =
- cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
- else
- pSMB->InformationLevel =
- cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
- } else /* Set File Size */ {
- if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
- pSMB->InformationLevel =
- cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
- else
- pSMB->InformationLevel =
- cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
- }
-
- parm_data =
- (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) +
- offset);
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
- pSMB->DataOffset = cpu_to_le16(offset);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
- byte_count = 3 /* pad */ + params + data_count;
- pSMB->DataCount = cpu_to_le16(data_count);
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- parm_data->FileSize = cpu_to_le64(size);
- pSMB->ByteCount = cpu_to_le16(byte_count);
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc)
- cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc);
-
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto SetEOFRetry;
-
- return rc;
-}
-
-int
-CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
- struct cifsFileInfo *cfile, __u64 size, bool set_allocation)
-{
- struct smb_com_transaction2_sfi_req *pSMB = NULL;
- struct file_end_of_file_info *parm_data;
- int rc = 0;
- __u16 params, param_offset, offset, byte_count, count;
-
- cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n",
- (long long)size);
- rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
-
- if (rc)
- return rc;
-
- pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid);
- pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16));
-
- params = 6;
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
- offset = param_offset + params;
-
- count = sizeof(struct file_end_of_file_info);
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find exact max SMB PDU from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(1000);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
- byte_count = 3 /* pad */ + params + count;
- pSMB->DataCount = cpu_to_le16(count);
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
- /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */
- parm_data =
- (struct file_end_of_file_info *)(((char *)pSMB) + offset + 4);
- pSMB->DataOffset = cpu_to_le16(offset);
- parm_data->FileSize = cpu_to_le64(size);
- pSMB->Fid = cfile->fid.netfid;
- if (set_allocation) {
- if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
- pSMB->InformationLevel =
- cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
- else
- pSMB->InformationLevel =
- cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
- } else /* Set File Size */ {
- if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
- pSMB->InformationLevel =
- cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
- else
- pSMB->InformationLevel =
- cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
- }
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
- rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
- cifs_small_buf_release(pSMB);
- if (rc) {
- cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n",
- rc);
- }
-
- /* Note: On -EAGAIN error only caller can retry on handle based calls
- since file handle passed in no longer valid */
-
- return rc;
-}
-
-/* Some legacy servers such as NT4 require that the file times be set on
- an open handle, rather than by pathname - this is awkward due to
- potential access conflicts on the open, but it is unavoidable for these
- old servers since the only other choice is to go from 100 nanosecond DCE
- time and resort to the original setpathinfo level which takes the ancient
- DOS time format with 2 second granularity */
-int
-CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
- const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener)
-{
- struct smb_com_transaction2_sfi_req *pSMB = NULL;
- char *data_offset;
- int rc = 0;
- __u16 params, param_offset, offset, byte_count, count;
-
- cifs_dbg(FYI, "Set Times (via SetFileInfo)\n");
- rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
-
- if (rc)
- return rc;
-
- pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
- pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
-
- params = 6;
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
- offset = param_offset + params;
-
- data_offset = (char *)pSMB +
- offsetof(struct smb_hdr, Protocol) + offset;
-
- count = sizeof(FILE_BASIC_INFO);
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find max SMB PDU from sess */
- pSMB->MaxDataCount = cpu_to_le16(1000);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
- byte_count = 3 /* pad */ + params + count;
- pSMB->DataCount = cpu_to_le16(count);
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
- pSMB->DataOffset = cpu_to_le16(offset);
- pSMB->Fid = fid;
- if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
- pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
- else
- pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
- memcpy(data_offset, data, sizeof(FILE_BASIC_INFO));
- rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
- cifs_small_buf_release(pSMB);
- if (rc)
- cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n",
- rc);
-
- /* Note: On -EAGAIN error only caller can retry on handle based calls
- since file handle passed in no longer valid */
-
- return rc;
-}
-
-int
-CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon,
- bool delete_file, __u16 fid, __u32 pid_of_opener)
-{
- struct smb_com_transaction2_sfi_req *pSMB = NULL;
- char *data_offset;
- int rc = 0;
- __u16 params, param_offset, offset, byte_count, count;
-
- cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n");
- rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
-
- if (rc)
- return rc;
-
- pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
- pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
-
- params = 6;
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
- offset = param_offset + params;
-
- /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */
- data_offset = (char *)(pSMB) + offset + 4;
-
- count = 1;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find max SMB PDU from sess */
- pSMB->MaxDataCount = cpu_to_le16(1000);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
- byte_count = 3 /* pad */ + params + count;
- pSMB->DataCount = cpu_to_le16(count);
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
- pSMB->DataOffset = cpu_to_le16(offset);
- pSMB->Fid = fid;
- pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
- *data_offset = delete_file ? 1 : 0;
- rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
- cifs_small_buf_release(pSMB);
- if (rc)
- cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc);
-
- return rc;
-}
-
-static int
-CIFSSMBSetPathInfoFB(const unsigned int xid, struct cifs_tcon *tcon,
- const char *fileName, const FILE_BASIC_INFO *data,
- const struct nls_table *nls_codepage,
- struct cifs_sb_info *cifs_sb)
-{
- int oplock = 0;
- struct cifs_open_parms oparms;
- struct cifs_fid fid;
- int rc;
-
- oparms = (struct cifs_open_parms) {
- .tcon = tcon,
- .cifs_sb = cifs_sb,
- .desired_access = GENERIC_WRITE,
- .create_options = cifs_create_options(cifs_sb, 0),
- .disposition = FILE_OPEN,
- .path = fileName,
- .fid = &fid,
- };
-
- rc = CIFS_open(xid, &oparms, &oplock, NULL);
- if (rc)
- goto out;
-
- rc = CIFSSMBSetFileInfo(xid, tcon, data, fid.netfid, current->tgid);
- CIFSSMBClose(xid, tcon, fid.netfid);
-out:
-
- return rc;
-}
-
-int
-CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
- const char *fileName, const FILE_BASIC_INFO *data,
- const struct nls_table *nls_codepage,
- struct cifs_sb_info *cifs_sb)
-{
- TRANSACTION2_SPI_REQ *pSMB = NULL;
- TRANSACTION2_SPI_RSP *pSMBr = NULL;
- int name_len;
- int rc = 0;
- int bytes_returned = 0;
- char *data_offset;
- __u16 params, param_offset, offset, byte_count, count;
- int remap = cifs_remap(cifs_sb);
-
- cifs_dbg(FYI, "In SetTimes\n");
-
-SetTimesRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
- PATH_MAX, nls_codepage, remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- name_len = copy_path_name(pSMB->FileName, fileName);
- }
-
- params = 6 + name_len;
- count = sizeof(FILE_BASIC_INFO);
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find max SMB PDU from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(1000);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_spi_req,
- InformationLevel) - 4;
- offset = param_offset + params;
- data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
- pSMB->DataOffset = cpu_to_le16(offset);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
- byte_count = 3 /* pad */ + params + count;
-
- pSMB->DataCount = cpu_to_le16(count);
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
- pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
- else
- pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- memcpy(data_offset, data, sizeof(FILE_BASIC_INFO));
- pSMB->ByteCount = cpu_to_le16(byte_count);
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc)
- cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc);
-
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto SetTimesRetry;
-
- if (rc == -EOPNOTSUPP)
- return CIFSSMBSetPathInfoFB(xid, tcon, fileName, data,
- nls_codepage, cifs_sb);
-
- return rc;
-}
-
-static void
-cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset,
- const struct cifs_unix_set_info_args *args)
-{
- u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64;
- u64 mode = args->mode;
-
- if (uid_valid(args->uid))
- uid = from_kuid(&init_user_ns, args->uid);
- if (gid_valid(args->gid))
- gid = from_kgid(&init_user_ns, args->gid);
-
- /*
- * Samba server ignores set of file size to zero due to bugs in some
- * older clients, but we should be precise - we use SetFileSize to
- * set file size and do not want to truncate file size to zero
- * accidentally as happened on one Samba server beta by putting
- * zero instead of -1 here
- */
- data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64);
- data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64);
- data_offset->LastStatusChange = cpu_to_le64(args->ctime);
- data_offset->LastAccessTime = cpu_to_le64(args->atime);
- data_offset->LastModificationTime = cpu_to_le64(args->mtime);
- data_offset->Uid = cpu_to_le64(uid);
- data_offset->Gid = cpu_to_le64(gid);
- /* better to leave device as zero when it is */
- data_offset->DevMajor = cpu_to_le64(MAJOR(args->device));
- data_offset->DevMinor = cpu_to_le64(MINOR(args->device));
- data_offset->Permissions = cpu_to_le64(mode);
-
- if (S_ISREG(mode))
- data_offset->Type = cpu_to_le32(UNIX_FILE);
- else if (S_ISDIR(mode))
- data_offset->Type = cpu_to_le32(UNIX_DIR);
- else if (S_ISLNK(mode))
- data_offset->Type = cpu_to_le32(UNIX_SYMLINK);
- else if (S_ISCHR(mode))
- data_offset->Type = cpu_to_le32(UNIX_CHARDEV);
- else if (S_ISBLK(mode))
- data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV);
- else if (S_ISFIFO(mode))
- data_offset->Type = cpu_to_le32(UNIX_FIFO);
- else if (S_ISSOCK(mode))
- data_offset->Type = cpu_to_le32(UNIX_SOCKET);
-}
-
-int
-CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
- const struct cifs_unix_set_info_args *args,
- u16 fid, u32 pid_of_opener)
-{
- struct smb_com_transaction2_sfi_req *pSMB = NULL;
- char *data_offset;
- int rc = 0;
- u16 params, param_offset, offset, byte_count, count;
-
- cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n");
- rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
-
- if (rc)
- return rc;
-
- pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
- pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
-
- params = 6;
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
- offset = param_offset + params;
-
- data_offset = (char *)pSMB +
- offsetof(struct smb_hdr, Protocol) + offset;
-
- count = sizeof(FILE_UNIX_BASIC_INFO);
-
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find max SMB PDU from sess */
- pSMB->MaxDataCount = cpu_to_le16(1000);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
- byte_count = 3 /* pad */ + params + count;
- pSMB->DataCount = cpu_to_le16(count);
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
- pSMB->DataOffset = cpu_to_le16(offset);
- pSMB->Fid = fid;
- pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args);
-
- rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
- cifs_small_buf_release(pSMB);
- if (rc)
- cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n",
- rc);
-
- /* Note: On -EAGAIN error only caller can retry on handle based calls
- since file handle passed in no longer valid */
-
- return rc;
-}
-
-int
-CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
- const char *file_name,
- const struct cifs_unix_set_info_args *args,
- const struct nls_table *nls_codepage, int remap)
-{
- TRANSACTION2_SPI_REQ *pSMB = NULL;
- TRANSACTION2_SPI_RSP *pSMBr = NULL;
- int name_len;
- int rc = 0;
- int bytes_returned = 0;
- FILE_UNIX_BASIC_INFO *data_offset;
- __u16 params, param_offset, offset, count, byte_count;
-
- cifs_dbg(FYI, "In SetUID/GID/Mode\n");
-setPermsRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name,
- PATH_MAX, nls_codepage, remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- name_len = copy_path_name(pSMB->FileName, file_name);
- }
-
- params = 6 + name_len;
- count = sizeof(FILE_UNIX_BASIC_INFO);
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find max SMB PDU from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(1000);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_spi_req,
- InformationLevel) - 4;
- offset = param_offset + params;
- /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */
- data_offset = (FILE_UNIX_BASIC_INFO *)((char *) pSMB + offset + 4);
- memset(data_offset, 0, count);
- pSMB->DataOffset = cpu_to_le16(offset);
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
- byte_count = 3 /* pad */ + params + count;
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->DataCount = cpu_to_le16(count);
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
-
- cifs_fill_unix_set_info(data_offset, args);
-
- pSMB->ByteCount = cpu_to_le16(byte_count);
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc)
- cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc);
-
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto setPermsRetry;
- return rc;
-}
-
-#ifdef CONFIG_CIFS_XATTR
-/*
- * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common
- * function used by listxattr and getxattr type calls. When ea_name is set,
- * it looks for that attribute name and stuffs that value into the EAData
- * buffer. When ea_name is NULL, it stuffs a list of attribute names into the
- * buffer. In both cases, the return value is either the length of the
- * resulting data or a negative error code. If EAData is a NULL pointer then
- * the data isn't copied to it, but the length is returned.
- */
-ssize_t
-CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
- const unsigned char *searchName, const unsigned char *ea_name,
- char *EAData, size_t buf_size,
- struct cifs_sb_info *cifs_sb)
-{
- /* BB assumes one setup word */
- TRANSACTION2_QPI_REQ *pSMB = NULL;
- TRANSACTION2_QPI_RSP *pSMBr = NULL;
- int remap = cifs_remap(cifs_sb);
- struct nls_table *nls_codepage = cifs_sb->local_nls;
- int rc = 0;
- int bytes_returned;
- int list_len;
- struct fealist *ea_response_data;
- struct fea *temp_fea;
- char *temp_ptr;
- char *end_of_smb;
- __u16 params, byte_count, data_offset;
- unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
-
- cifs_dbg(FYI, "In Query All EAs path %s\n", searchName);
-QAllEAsRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- list_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName,
- PATH_MAX, nls_codepage, remap);
- list_len++; /* trailing null */
- list_len *= 2;
- } else {
- list_len = copy_path_name(pSMB->FileName, searchName);
- }
-
- params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */;
- pSMB->TotalDataCount = 0;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find exact max SMB PDU from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- pSMB->ParameterOffset = cpu_to_le16(offsetof(
- struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
- byte_count = params + 1 /* pad */ ;
- pSMB->TotalParameterCount = cpu_to_le16(params);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc);
- goto QAllEAsOut;
- }
-
-
- /* BB also check enough total bytes returned */
- /* BB we need to improve the validity checking
- of these trans2 responses */
-
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || get_bcc(&pSMBr->hdr) < 4) {
- rc = -EIO; /* bad smb */
- goto QAllEAsOut;
- }
-
- /* check that length of list is not more than bcc */
- /* check that each entry does not go beyond length
- of list */
- /* check that each element of each entry does not
- go beyond end of list */
- /* validate_trans2_offsets() */
- /* BB check if start of smb + data_offset > &bcc+ bcc */
-
- data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- ea_response_data = (struct fealist *)
- (((char *) &pSMBr->hdr.Protocol) + data_offset);
-
- list_len = le32_to_cpu(ea_response_data->list_len);
- cifs_dbg(FYI, "ea length %d\n", list_len);
- if (list_len <= 8) {
- cifs_dbg(FYI, "empty EA list returned from server\n");
- /* didn't find the named attribute */
- if (ea_name)
- rc = -ENODATA;
- goto QAllEAsOut;
- }
-
- /* make sure list_len doesn't go past end of SMB */
- end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr);
- if ((char *)ea_response_data + list_len > end_of_smb) {
- cifs_dbg(FYI, "EA list appears to go beyond SMB\n");
- rc = -EIO;
- goto QAllEAsOut;
- }
-
- /* account for ea list len */
- list_len -= 4;
- temp_fea = &ea_response_data->list;
- temp_ptr = (char *)temp_fea;
- while (list_len > 0) {
- unsigned int name_len;
- __u16 value_len;
-
- list_len -= 4;
- temp_ptr += 4;
- /* make sure we can read name_len and value_len */
- if (list_len < 0) {
- cifs_dbg(FYI, "EA entry goes beyond length of list\n");
- rc = -EIO;
- goto QAllEAsOut;
- }
-
- name_len = temp_fea->name_len;
- value_len = le16_to_cpu(temp_fea->value_len);
- list_len -= name_len + 1 + value_len;
- if (list_len < 0) {
- cifs_dbg(FYI, "EA entry goes beyond length of list\n");
- rc = -EIO;
- goto QAllEAsOut;
- }
-
- if (ea_name) {
- if (ea_name_len == name_len &&
- memcmp(ea_name, temp_ptr, name_len) == 0) {
- temp_ptr += name_len + 1;
- rc = value_len;
- if (buf_size == 0)
- goto QAllEAsOut;
- if ((size_t)value_len > buf_size) {
- rc = -ERANGE;
- goto QAllEAsOut;
- }
- memcpy(EAData, temp_ptr, value_len);
- goto QAllEAsOut;
- }
- } else {
- /* account for prefix user. and trailing null */
- rc += (5 + 1 + name_len);
- if (rc < (int) buf_size) {
- memcpy(EAData, "user.", 5);
- EAData += 5;
- memcpy(EAData, temp_ptr, name_len);
- EAData += name_len;
- /* null terminate name */
- *EAData = 0;
- ++EAData;
- } else if (buf_size == 0) {
- /* skip copy - calc size only */
- } else {
- /* stop before overrun buffer */
- rc = -ERANGE;
- break;
- }
- }
- temp_ptr += name_len + 1 + value_len;
- temp_fea = (struct fea *)temp_ptr;
- }
-
- /* didn't find the named attribute */
- if (ea_name)
- rc = -ENODATA;
-
-QAllEAsOut:
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto QAllEAsRetry;
-
- return (ssize_t)rc;
-}
-
-int
-CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
- const char *fileName, const char *ea_name, const void *ea_value,
- const __u16 ea_value_len, const struct nls_table *nls_codepage,
- struct cifs_sb_info *cifs_sb)
-{
- struct smb_com_transaction2_spi_req *pSMB = NULL;
- struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
- struct fealist *parm_data;
- int name_len;
- int rc = 0;
- int bytes_returned = 0;
- __u16 params, param_offset, byte_count, offset, count;
- int remap = cifs_remap(cifs_sb);
-
- cifs_dbg(FYI, "In SetEA\n");
-SetEARetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
- PATH_MAX, nls_codepage, remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else {
- name_len = copy_path_name(pSMB->FileName, fileName);
- }
-
- params = 6 + name_len;
-
- /* done calculating parms using name_len of file name,
- now use name_len to calculate length of ea name
- we are going to create in the inode xattrs */
- if (ea_name == NULL)
- name_len = 0;
- else
- name_len = strnlen(ea_name, 255);
-
- count = sizeof(*parm_data) + 1 + ea_value_len + name_len;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find max SMB PDU from sess */
- pSMB->MaxDataCount = cpu_to_le16(1000);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- param_offset = offsetof(struct smb_com_transaction2_spi_req,
- InformationLevel) - 4;
- offset = param_offset + params;
- pSMB->InformationLevel =
- cpu_to_le16(SMB_SET_FILE_EA);
-
- parm_data = (void *)pSMB + offsetof(struct smb_hdr, Protocol) + offset;
- pSMB->ParameterOffset = cpu_to_le16(param_offset);
- pSMB->DataOffset = cpu_to_le16(offset);
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
- byte_count = 3 /* pad */ + params + count;
- pSMB->DataCount = cpu_to_le16(count);
- parm_data->list_len = cpu_to_le32(count);
- parm_data->list.EA_flags = 0;
- /* we checked above that name len is less than 255 */
- parm_data->list.name_len = (__u8)name_len;
- /* EA names are always ASCII */
- if (ea_name)
- strncpy(parm_data->list.name, ea_name, name_len);
- parm_data->list.name[name_len] = '\0';
- parm_data->list.value_len = cpu_to_le16(ea_value_len);
- /* caller ensures that ea_value_len is less than 64K but
- we need to ensure that it fits within the smb */
-
- /*BB add length check to see if it would fit in
- negotiated SMB buffer size BB */
- /* if (ea_value_len > buffer_size - 512 (enough for header)) */
- if (ea_value_len)
- memcpy(parm_data->list.name + name_len + 1,
- ea_value, ea_value_len);
-
- pSMB->TotalDataCount = pSMB->DataCount;
- pSMB->ParameterCount = cpu_to_le16(params);
- pSMB->TotalParameterCount = pSMB->ParameterCount;
- pSMB->Reserved4 = 0;
- inc_rfc1001_len(pSMB, byte_count);
- pSMB->ByteCount = cpu_to_le16(byte_count);
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc)
- cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc);
-
- cifs_buf_release(pSMB);
-
- if (rc == -EAGAIN)
- goto SetEARetry;
-
- return rc;
-}
-#endif