rc = CIFSSMBRenameOpenFile(xid, tcon, netfid, NULL, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc != 0)
- goto out_close;
/* set DELETE_ON_CLOSE */
rc = CIFSSMBSetFileDisposition(xid, tcon, true, netfid, current->tgid);
return rc;
}
+static int
+cifs_do_rename(int xid, struct dentry *from_dentry, const char *fromPath,
+ struct dentry *to_dentry, const char *toPath)
+{
+ struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb);
+ struct cifsTconInfo *pTcon = cifs_sb->tcon;
+ __u16 srcfid;
+ int oplock, rc;
+
+ /* try path-based rename first */
+ rc = CIFSSMBRename(xid, pTcon, fromPath, toPath, cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ /*
+ * don't bother with rename by filehandle unless file is busy and
+ * source Note that cross directory moves do not work with
+ * rename by filehandle to various Windows servers.
+ */
+ if (rc == 0 || rc != -ETXTBSY)
+ return rc;
+
+ /* open the file to be renamed -- we need DELETE perms */
+ rc = CIFSSMBOpen(xid, pTcon, fromPath, FILE_OPEN, DELETE,
+ CREATE_NOT_DIR, &srcfid, &oplock, NULL,
+ cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ if (rc == 0) {
+ rc = CIFSSMBRenameOpenFile(xid, pTcon, srcfid,
+ (const char *) to_dentry->d_name.name,
+ cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ CIFSSMBClose(xid, pTcon, srcfid);
+ }
+
+ return rc;
+}
+
int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
struct inode *target_inode, struct dentry *target_direntry)
{
- char *fromName;
- char *toName;
+ char *fromName = NULL;
+ char *toName = NULL;
struct cifs_sb_info *cifs_sb_source;
struct cifs_sb_info *cifs_sb_target;
struct cifsTconInfo *pTcon;
+ FILE_UNIX_BASIC_INFO *info_buf_source = NULL;
+ FILE_UNIX_BASIC_INFO *info_buf_target;
int xid;
- int rc = 0;
-
- xid = GetXid();
+ int rc;
cifs_sb_target = CIFS_SB(target_inode->i_sb);
cifs_sb_source = CIFS_SB(source_inode->i_sb);
pTcon = cifs_sb_source->tcon;
+ xid = GetXid();
+
+ /*
+ * BB: this might be allowed if same server, but different share.
+ * Consider adding support for this
+ */
if (pTcon != cifs_sb_target->tcon) {
- FreeXid(xid);
- return -EXDEV; /* BB actually could be allowed if same server,
- but different share.
- Might eventually add support for this */
+ rc = -EXDEV;
+ goto cifs_rename_exit;
}
- /* we already have the rename sem so we do not need to grab it again
- here to protect the path integrity */
+ /*
+ * we already have the rename sem so we do not need to
+ * grab it again here to protect the path integrity
+ */
fromName = build_path_from_dentry(source_direntry);
+ if (fromName == NULL) {
+ rc = -ENOMEM;
+ goto cifs_rename_exit;
+ }
+
toName = build_path_from_dentry(target_direntry);
- if ((fromName == NULL) || (toName == NULL)) {
+ if (toName == NULL) {
rc = -ENOMEM;
goto cifs_rename_exit;
}
- rc = CIFSSMBRename(xid, pTcon, fromName, toName,
- cifs_sb_source->local_nls,
- cifs_sb_source->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
+ rc = cifs_do_rename(xid, source_direntry, fromName,
+ target_direntry, toName);
+
if (rc == -EEXIST) {
- /* check if they are the same file because rename of hardlinked
- files is a noop */
- FILE_UNIX_BASIC_INFO *info_buf_source;
- FILE_UNIX_BASIC_INFO *info_buf_target;
-
- info_buf_source =
- kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
- if (info_buf_source != NULL) {
+ if (pTcon->unix_ext) {
+ /*
+ * Are src and dst hardlinks of same inode? We can
+ * only tell with unix extensions enabled
+ */
+ info_buf_source =
+ kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO),
+ GFP_KERNEL);
+ if (info_buf_source != NULL)
+ goto unlink_target;
+
info_buf_target = info_buf_source + 1;
- if (pTcon->unix_ext)
- rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName,
- info_buf_source,
- cifs_sb_source->local_nls,
- cifs_sb_source->mnt_cifs_flags &
+ rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName,
+ info_buf_source,
+ cifs_sb_source->local_nls,
+ cifs_sb_source->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
- /* else rc is still EEXIST so will fall through to
- unlink the target and retry rename */
- if (rc == 0) {
- rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName,
- info_buf_target,
+ if (rc != 0)
+ goto unlink_target;
+
+ rc = CIFSSMBUnixQPathInfo(xid, pTcon,
+ toName, info_buf_target,
cifs_sb_target->local_nls,
/* remap based on source sb */
cifs_sb_source->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- }
- if ((rc == 0) &&
- (info_buf_source->UniqueId ==
- info_buf_target->UniqueId)) {
- /* do not rename since the files are hardlinked which
- is a noop */
- } else {
- /* we either can not tell the files are hardlinked
- (as with Windows servers) or files are not
- hardlinked so delete the target manually before
- renaming to follow POSIX rather than Windows
- semantics */
- cifs_unlink(target_inode, target_direntry);
- rc = CIFSSMBRename(xid, pTcon, fromName,
- toName,
- cifs_sb_source->local_nls,
- cifs_sb_source->mnt_cifs_flags
- & CIFS_MOUNT_MAP_SPECIAL_CHR);
- }
- kfree(info_buf_source);
- } /* if we can not get memory just leave rc as EEXIST */
- }
-
- if (rc)
- cFYI(1, ("rename rc %d", rc));
-
- if ((rc == -EIO) || (rc == -EEXIST)) {
- int oplock = 0;
- __u16 netfid;
-
- /* BB FIXME Is Generic Read correct for rename? */
- /* if renaming directory - we should not say CREATE_NOT_DIR,
- need to test renaming open directory, also GENERIC_READ
- might not right be right access to request */
- rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ,
- CREATE_NOT_DIR, &netfid, &oplock, NULL,
- cifs_sb_source->local_nls,
- cifs_sb_source->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc == 0) {
- rc = CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName,
- cifs_sb_source->local_nls,
- cifs_sb_source->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
- CIFSSMBClose(xid, pTcon, netfid);
- }
+
+ if (rc == 0 && (info_buf_source->UniqueId ==
+ info_buf_target->UniqueId))
+ /* same file, POSIX says that this is a noop */
+ goto cifs_rename_exit;
+ } /* else ... BB we could add the same check for Windows by
+ checking the UniqueId via FILE_INTERNAL_INFO */
+unlink_target:
+ /*
+ * we either can not tell the files are hardlinked (as with
+ * Windows servers) or files are not hardlinked. Delete the
+ * target manually before renaming to follow POSIX rather than
+ * Windows semantics
+ */
+ cifs_unlink(target_inode, target_direntry);
+ rc = cifs_do_rename(xid, source_direntry, fromName,
+ target_direntry, toName);
}
cifs_rename_exit:
+ kfree(info_buf_source);
kfree(fromName);
kfree(toName);
FreeXid(xid);
projects / linux-2.6-omap-h63xx.git / blobdiff