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Diffstat (limited to 'fs/cifs/smb2file.c')
-rw-r--r--fs/cifs/smb2file.c288
1 files changed, 0 insertions, 288 deletions
diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c
deleted file mode 100644
index 04a81a4142c3..000000000000
--- a/fs/cifs/smb2file.c
+++ /dev/null
@@ -1,288 +0,0 @@
-/*
- * fs/cifs/smb2file.c
- *
- * Copyright (C) International Business Machines Corp., 2002, 2011
- * Author(s): Steve French (sfrench@us.ibm.com),
- * Pavel Shilovsky ((pshilovsky@samba.org) 2012
- *
- * This library is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; either version 2.1 of the License, or
- * (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
- * the GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <linux/fs.h>
-#include <linux/stat.h>
-#include <linux/slab.h>
-#include <linux/pagemap.h>
-#include <asm/div64.h>
-#include "cifsfs.h"
-#include "cifspdu.h"
-#include "cifsglob.h"
-#include "cifsproto.h"
-#include "cifs_debug.h"
-#include "cifs_fs_sb.h"
-#include "cifs_unicode.h"
-#include "fscache.h"
-#include "smb2proto.h"
-
-void
-smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock)
-{
- oplock &= 0xFF;
- if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
- return;
- if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
- oplock == SMB2_OPLOCK_LEVEL_BATCH) {
- cinode->clientCanCacheAll = true;
- cinode->clientCanCacheRead = true;
- cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
- &cinode->vfs_inode);
- } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
- cinode->clientCanCacheAll = false;
- cinode->clientCanCacheRead = true;
- cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
- &cinode->vfs_inode);
- } else {
- cinode->clientCanCacheAll = false;
- cinode->clientCanCacheRead = false;
- }
-}
-
-int
-smb2_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
- __u32 *oplock, FILE_ALL_INFO *buf)
-{
- int rc;
- __le16 *smb2_path;
- struct smb2_file_all_info *smb2_data = NULL;
- __u8 smb2_oplock[17];
- struct cifs_fid *fid = oparms->fid;
-
- smb2_path = cifs_convert_path_to_utf16(oparms->path, oparms->cifs_sb);
- if (smb2_path == NULL) {
- rc = -ENOMEM;
- goto out;
- }
-
- smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
- GFP_KERNEL);
- if (smb2_data == NULL) {
- rc = -ENOMEM;
- goto out;
- }
-
- oparms->desired_access |= FILE_READ_ATTRIBUTES;
- *smb2_oplock = SMB2_OPLOCK_LEVEL_BATCH;
-
- if (oparms->tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
- memcpy(smb2_oplock + 1, fid->lease_key, SMB2_LEASE_KEY_SIZE);
-
- rc = SMB2_open(xid, oparms, smb2_path, smb2_oplock, smb2_data);
- if (rc)
- goto out;
-
- if (buf) {
- /* open response does not have IndexNumber field - get it */
- rc = SMB2_get_srv_num(xid, oparms->tcon, fid->persistent_fid,
- fid->volatile_fid,
- &smb2_data->IndexNumber);
- if (rc) {
- /* let get_inode_info disable server inode numbers */
- smb2_data->IndexNumber = 0;
- rc = 0;
- }
- move_smb2_info_to_cifs(buf, smb2_data);
- }
-
- *oplock = *smb2_oplock;
-out:
- kfree(smb2_data);
- kfree(smb2_path);
- return rc;
-}
-
-int
-smb2_unlock_range(struct cifsFileInfo *cfile, struct file_lock *flock,
- const unsigned int xid)
-{
- int rc = 0, stored_rc;
- unsigned int max_num, num = 0, max_buf;
- struct smb2_lock_element *buf, *cur;
- struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
- struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
- struct cifsLockInfo *li, *tmp;
- __u64 length = 1 + flock->fl_end - flock->fl_start;
- struct list_head tmp_llist;
-
- INIT_LIST_HEAD(&tmp_llist);
-
- /*
- * Accessing maxBuf is racy with cifs_reconnect - need to store value
- * and check it for zero before using.
- */
- max_buf = tcon->ses->server->maxBuf;
- if (!max_buf)
- return -EINVAL;
-
- max_num = max_buf / sizeof(struct smb2_lock_element);
- buf = kzalloc(max_num * sizeof(struct smb2_lock_element), GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
-
- cur = buf;
-
- down_write(&cinode->lock_sem);
- list_for_each_entry_safe(li, tmp, &cfile->llist->locks, llist) {
- if (flock->fl_start > li->offset ||
- (flock->fl_start + length) <
- (li->offset + li->length))
- continue;
- if (current->tgid != li->pid)
- continue;
- if (cinode->can_cache_brlcks) {
- /*
- * We can cache brlock requests - simply remove a lock
- * from the file's list.
- */
- list_del(&li->llist);
- cifs_del_lock_waiters(li);
- kfree(li);
- continue;
- }
- cur->Length = cpu_to_le64(li->length);
- cur->Offset = cpu_to_le64(li->offset);
- cur->Flags = cpu_to_le32(SMB2_LOCKFLAG_UNLOCK);
- /*
- * We need to save a lock here to let us add it again to the
- * file's list if the unlock range request fails on the server.
- */
- list_move(&li->llist, &tmp_llist);
- if (++num == max_num) {
- stored_rc = smb2_lockv(xid, tcon,
- cfile->fid.persistent_fid,
- cfile->fid.volatile_fid,
- current->tgid, num, buf);
- if (stored_rc) {
- /*
- * We failed on the unlock range request - add
- * all locks from the tmp list to the head of
- * the file's list.
- */
- cifs_move_llist(&tmp_llist,
- &cfile->llist->locks);
- rc = stored_rc;
- } else
- /*
- * The unlock range request succeed - free the
- * tmp list.
- */
- cifs_free_llist(&tmp_llist);
- cur = buf;
- num = 0;
- } else
- cur++;
- }
- if (num) {
- stored_rc = smb2_lockv(xid, tcon, cfile->fid.persistent_fid,
- cfile->fid.volatile_fid, current->tgid,
- num, buf);
- if (stored_rc) {
- cifs_move_llist(&tmp_llist, &cfile->llist->locks);
- rc = stored_rc;
- } else
- cifs_free_llist(&tmp_llist);
- }
- up_write(&cinode->lock_sem);
-
- kfree(buf);
- return rc;
-}
-
-static int
-smb2_push_mand_fdlocks(struct cifs_fid_locks *fdlocks, const unsigned int xid,
- struct smb2_lock_element *buf, unsigned int max_num)
-{
- int rc = 0, stored_rc;
- struct cifsFileInfo *cfile = fdlocks->cfile;
- struct cifsLockInfo *li;
- unsigned int num = 0;
- struct smb2_lock_element *cur = buf;
- struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
-
- list_for_each_entry(li, &fdlocks->locks, llist) {
- cur->Length = cpu_to_le64(li->length);
- cur->Offset = cpu_to_le64(li->offset);
- cur->Flags = cpu_to_le32(li->type |
- SMB2_LOCKFLAG_FAIL_IMMEDIATELY);
- if (++num == max_num) {
- stored_rc = smb2_lockv(xid, tcon,
- cfile->fid.persistent_fid,
- cfile->fid.volatile_fid,
- current->tgid, num, buf);
- if (stored_rc)
- rc = stored_rc;
- cur = buf;
- num = 0;
- } else
- cur++;
- }
- if (num) {
- stored_rc = smb2_lockv(xid, tcon,
- cfile->fid.persistent_fid,
- cfile->fid.volatile_fid,
- current->tgid, num, buf);
- if (stored_rc)
- rc = stored_rc;
- }
-
- return rc;
-}
-
-int
-smb2_push_mandatory_locks(struct cifsFileInfo *cfile)
-{
- int rc = 0, stored_rc;
- unsigned int xid;
- unsigned int max_num, max_buf;
- struct smb2_lock_element *buf;
- struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
- struct cifs_fid_locks *fdlocks;
-
- xid = get_xid();
-
- /*
- * Accessing maxBuf is racy with cifs_reconnect - need to store value
- * and check it for zero before using.
- */
- max_buf = tlink_tcon(cfile->tlink)->ses->server->maxBuf;
- if (!max_buf) {
- free_xid(xid);
- return -EINVAL;
- }
-
- max_num = max_buf / sizeof(struct smb2_lock_element);
- buf = kzalloc(max_num * sizeof(struct smb2_lock_element), GFP_KERNEL);
- if (!buf) {
- free_xid(xid);
- return -ENOMEM;
- }
-
- list_for_each_entry(fdlocks, &cinode->llist, llist) {
- stored_rc = smb2_push_mand_fdlocks(fdlocks, xid, buf, max_num);
- if (stored_rc)
- rc = stored_rc;
- }
-
- kfree(buf);
- free_xid(xid);
- return rc;
-}
generated by cgit (git 2.34.1) at 2025-12-25 09:31:08 +0000