1 files changed, 0 insertions, 372 deletions

diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c
deleted file mode 100644
index e0ee96d69d49..000000000000
--- a/fs/cifs/smb2file.c
+++ /dev/null
@@ -1,372 +0,0 @@
-// SPDX-License-Identifier: LGPL-2.1
-/*
- *
- *   Copyright (C) International Business Machines  Corp., 2002, 2011
- *   Author(s): Steve French (sfrench@us.ibm.com),
- *              Pavel Shilovsky ((pshilovsky@samba.org) 2012
- *
- */
-#include <linux/fs.h>
-#include <linux/filelock.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"
-#include "smb2status.h"
-
-static struct smb2_symlink_err_rsp *symlink_data(const struct kvec *iov)
-{
-	struct smb2_err_rsp *err = iov->iov_base;
-	struct smb2_symlink_err_rsp *sym = ERR_PTR(-EINVAL);
-	u32 len;
-
-	if (err->ErrorContextCount) {
-		struct smb2_error_context_rsp *p, *end;
-
-		len = (u32)err->ErrorContextCount * (offsetof(struct smb2_error_context_rsp,
-							      ErrorContextData) +
-						     sizeof(struct smb2_symlink_err_rsp));
-		if (le32_to_cpu(err->ByteCount) < len || iov->iov_len < len + sizeof(*err) + 1)
-			return ERR_PTR(-EINVAL);
-
-		p = (struct smb2_error_context_rsp *)err->ErrorData;
-		end = (struct smb2_error_context_rsp *)((u8 *)err + iov->iov_len);
-		do {
-			if (le32_to_cpu(p->ErrorId) == SMB2_ERROR_ID_DEFAULT) {
-				sym = (struct smb2_symlink_err_rsp *)&p->ErrorContextData;
-				break;
-			}
-			cifs_dbg(FYI, "%s: skipping unhandled error context: 0x%x\n",
-				 __func__, le32_to_cpu(p->ErrorId));
-
-			len = ALIGN(le32_to_cpu(p->ErrorDataLength), 8);
-			p = (struct smb2_error_context_rsp *)((u8 *)&p->ErrorContextData + len);
-		} while (p < end);
-	} else if (le32_to_cpu(err->ByteCount) >= sizeof(*sym) &&
-		   iov->iov_len >= SMB2_SYMLINK_STRUCT_SIZE) {
-		sym = (struct smb2_symlink_err_rsp *)err->ErrorData;
-	}
-
-	if (!IS_ERR(sym) && (le32_to_cpu(sym->SymLinkErrorTag) != SYMLINK_ERROR_TAG ||
-			     le32_to_cpu(sym->ReparseTag) != IO_REPARSE_TAG_SYMLINK))
-		sym = ERR_PTR(-EINVAL);
-
-	return sym;
-}
-
-int smb2_parse_symlink_response(struct cifs_sb_info *cifs_sb, const struct kvec *iov, char **path)
-{
-	struct smb2_symlink_err_rsp *sym;
-	unsigned int sub_offs, sub_len;
-	unsigned int print_offs, print_len;
-	char *s;
-
-	if (!cifs_sb || !iov || !iov->iov_base || !iov->iov_len || !path)
-		return -EINVAL;
-
-	sym = symlink_data(iov);
-	if (IS_ERR(sym))
-		return PTR_ERR(sym);
-
-	sub_len = le16_to_cpu(sym->SubstituteNameLength);
-	sub_offs = le16_to_cpu(sym->SubstituteNameOffset);
-	print_len = le16_to_cpu(sym->PrintNameLength);
-	print_offs = le16_to_cpu(sym->PrintNameOffset);
-
-	if (iov->iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offs + sub_len ||
-	    iov->iov_len < SMB2_SYMLINK_STRUCT_SIZE + print_offs + print_len)
-		return -EINVAL;
-
-	s = cifs_strndup_from_utf16((char *)sym->PathBuffer + sub_offs, sub_len, true,
-				    cifs_sb->local_nls);
-	if (!s)
-		return -ENOMEM;
-	convert_delimiter(s, '/');
-	cifs_dbg(FYI, "%s: symlink target: %s\n", __func__, s);
-
-	*path = s;
-	return 0;
-}
-
-int smb2_open_file(const unsigned int xid, struct cifs_open_parms *oparms, __u32 *oplock, void *buf)
-{
-	int rc;
-	__le16 *smb2_path;
-	__u8 smb2_oplock;
-	struct cifs_open_info_data *data = buf;
-	struct smb2_file_all_info file_info = {};
-	struct smb2_file_all_info *smb2_data = data ? &file_info : NULL;
-	struct kvec err_iov = {};
-	int err_buftype = CIFS_NO_BUFFER;
-	struct cifs_fid *fid = oparms->fid;
-	struct network_resiliency_req nr_ioctl_req;
-
-	smb2_path = cifs_convert_path_to_utf16(oparms->path, oparms->cifs_sb);
-	if (smb2_path == NULL)
-		return -ENOMEM;
-
-	oparms->desired_access |= FILE_READ_ATTRIBUTES;
-	smb2_oplock = SMB2_OPLOCK_LEVEL_BATCH;
-
-	rc = SMB2_open(xid, oparms, smb2_path, &smb2_oplock, smb2_data, NULL, &err_iov,
-		       &err_buftype);
-	if (rc && data) {
-		struct smb2_hdr *hdr = err_iov.iov_base;
-
-		if (unlikely(!err_iov.iov_base || err_buftype == CIFS_NO_BUFFER))
-			goto out;
-		if (hdr->Status == STATUS_STOPPED_ON_SYMLINK) {
-			rc = smb2_parse_symlink_response(oparms->cifs_sb, &err_iov,
-							 &data->symlink_target);
-			if (!rc) {
-				memset(smb2_data, 0, sizeof(*smb2_data));
-				oparms->create_options |= OPEN_REPARSE_POINT;
-				rc = SMB2_open(xid, oparms, smb2_path, &smb2_oplock, smb2_data,
-					       NULL, NULL, NULL);
-				oparms->create_options &= ~OPEN_REPARSE_POINT;
-			}
-		}
-	}
-
-	if (rc)
-		goto out;
-
-	if (oparms->tcon->use_resilient) {
-		/* default timeout is 0, servers pick default (120 seconds) */
-		nr_ioctl_req.Timeout =
-			cpu_to_le32(oparms->tcon->handle_timeout);
-		nr_ioctl_req.Reserved = 0;
-		rc = SMB2_ioctl(xid, oparms->tcon, fid->persistent_fid,
-			fid->volatile_fid, FSCTL_LMR_REQUEST_RESILIENCY,
-			(char *)&nr_ioctl_req, sizeof(nr_ioctl_req),
-			CIFSMaxBufSize, NULL, NULL /* no return info */);
-		if (rc == -EOPNOTSUPP) {
-			cifs_dbg(VFS,
-			     "resiliency not supported by server, disabling\n");
-			oparms->tcon->use_resilient = false;
-		} else if (rc)
-			cifs_dbg(FYI, "error %d setting resiliency\n", rc);
-
-		rc = 0;
-	}
-
-	if (smb2_data) {
-		/* if open response does not have IndexNumber field - get it */
-		if (smb2_data->IndexNumber == 0) {
-			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;
-			}
-		}
-		memcpy(&data->fi, smb2_data, sizeof(data->fi));
-	}
-
-	*oplock = smb2_oplock;
-out:
-	free_rsp_buf(err_buftype, err_iov.iov_base);
-	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(d_inode(cfile->dentry));
-	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 before using.
-	 */
-	max_buf = tcon->ses->server->maxBuf;
-	if (max_buf < sizeof(struct smb2_lock_element))
-		return -EINVAL;
-
-	BUILD_BUG_ON(sizeof(struct smb2_lock_element) > PAGE_SIZE);
-	max_buf = min_t(unsigned int, max_buf, PAGE_SIZE);
-	max_num = max_buf / sizeof(struct smb2_lock_element);
-	buf = kcalloc(max_num, sizeof(struct smb2_lock_element), GFP_KERNEL);
-	if (!buf)
-		return -ENOMEM;
-
-	cur = buf;
-
-	cifs_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)
-			/*
-			 * flock and OFD lock are associated with an open
-			 * file description, not the process.
-			 */
-			if (!(flock->fl_flags & (FL_FLOCK | FL_OFDLCK)))
-				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(d_inode(cfile->dentry));
-	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 < sizeof(struct smb2_lock_element)) {
-		free_xid(xid);
-		return -EINVAL;
-	}
-
-	BUILD_BUG_ON(sizeof(struct smb2_lock_element) > PAGE_SIZE);
-	max_buf = min_t(unsigned int, max_buf, PAGE_SIZE);
-	max_num = max_buf / sizeof(struct smb2_lock_element);
-	buf = kcalloc(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;
-}