@@ -278,6 +278,10 @@ struct smb_version_operations {
/* send rename request */
int (*rename)(const unsigned int, struct cifs_tcon *, const char *,
const char *, struct cifs_sb_info *);
+ /* send create hardlink request */
+ int (*create_hardlink)(const unsigned int, struct cifs_tcon *,
+ const char *, const char *,
+ struct cifs_sb_info *);
/* open a file for non-posix mounts */
int (*open)(const unsigned int, struct cifs_tcon *, const char *, int,
int, int, struct cifs_fid *, __u32 *, FILE_ALL_INFO *,
@@ -316,11 +316,9 @@ extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon,
int netfid, const char *target_name,
const struct nls_table *nls_codepage,
int remap_special_chars);
-extern int CIFSCreateHardLink(const unsigned int xid,
- struct cifs_tcon *tcon,
- const char *fromName, const char *toName,
- const struct nls_table *nls_codepage,
- int remap_special_chars);
+extern int CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
+ const char *from_name, const char *to_name,
+ struct cifs_sb_info *cifs_sb);
extern int CIFSUnixCreateHardLink(const unsigned int xid,
struct cifs_tcon *tcon,
const char *fromName, const char *toName,
@@ -2921,8 +2921,8 @@ createHardLinkRetry:
int
CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
- const char *fromName, const char *toName,
- const struct nls_table *nls_codepage, int remap)
+ const char *from_name, const char *to_name,
+ struct cifs_sb_info *cifs_sb)
{
int rc = 0;
NT_RENAME_REQ *pSMB = NULL;
@@ -2930,6 +2930,7 @@ CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
int bytes_returned;
int name_len, name_len2;
__u16 count;
+ int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR;
cFYI(1, "In CIFSCreateHardLink");
winCreateHardLinkRetry:
@@ -2949,8 +2950,8 @@ winCreateHardLinkRetry:
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name,
+ PATH_MAX, cifs_sb->local_nls, remap);
name_len++; /* trailing null */
name_len *= 2;
@@ -2959,17 +2960,18 @@ winCreateHardLinkRetry:
pSMB->OldFileName[name_len + 1] = 0x00; /* pad */
name_len2 =
cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2],
- toName, PATH_MAX, nls_codepage, remap);
+ to_name, PATH_MAX, cifs_sb->local_nls,
+ remap);
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
name_len2 *= 2; /* convert to bytes */
} else { /* BB improve the check for buffer overruns BB */
- name_len = strnlen(fromName, PATH_MAX);
+ name_len = strnlen(from_name, PATH_MAX);
name_len++; /* trailing null */
- strncpy(pSMB->OldFileName, fromName, name_len);
- name_len2 = strnlen(toName, PATH_MAX);
+ strncpy(pSMB->OldFileName, from_name, name_len);
+ name_len2 = strnlen(to_name, PATH_MAX);
name_len2++; /* trailing null */
pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
- strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
+ strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2);
name_len2++; /* trailing null */
name_len2++; /* signature byte */
}
@@ -391,70 +391,84 @@ cifs_hardlink(struct dentry *old_file, struct inode *inode,
{
int rc = -EACCES;
unsigned int xid;
- char *fromName = NULL;
- char *toName = NULL;
+ char *from_name = NULL;
+ char *to_name = NULL;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct tcon_link *tlink;
- struct cifs_tcon *pTcon;
+ struct cifs_tcon *tcon;
+ struct TCP_Server_Info *server;
struct cifsInodeInfo *cifsInode;
tlink = cifs_sb_tlink(cifs_sb);
if (IS_ERR(tlink))
return PTR_ERR(tlink);
- pTcon = tlink_tcon(tlink);
+ tcon = tlink_tcon(tlink);
xid = get_xid();
- fromName = build_path_from_dentry(old_file);
- toName = build_path_from_dentry(direntry);
- if ((fromName == NULL) || (toName == NULL)) {
+ from_name = build_path_from_dentry(old_file);
+ to_name = build_path_from_dentry(direntry);
+ if ((from_name == NULL) || (to_name == NULL)) {
rc = -ENOMEM;
goto cifs_hl_exit;
}
- if (pTcon->unix_ext)
- rc = CIFSUnixCreateHardLink(xid, pTcon, fromName, toName,
+ if (tcon->unix_ext)
+ rc = CIFSUnixCreateHardLink(xid, tcon, from_name, to_name,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
else {
- rc = CIFSCreateHardLink(xid, pTcon, fromName, toName,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
+ server = tcon->ses->server;
+ if (!server->ops->create_hardlink)
+ return -ENOSYS;
+ rc = server->ops->create_hardlink(xid, tcon, from_name, to_name,
+ cifs_sb);
if ((rc == -EIO) || (rc == -EINVAL))
rc = -EOPNOTSUPP;
}
d_drop(direntry); /* force new lookup from server of target */
- /* if source file is cached (oplocked) revalidate will not go to server
- until the file is closed or oplock broken so update nlinks locally */
+ /*
+ * if source file is cached (oplocked) revalidate will not go to server
+ * until the file is closed or oplock broken so update nlinks locally
+ */
if (old_file->d_inode) {
cifsInode = CIFS_I(old_file->d_inode);
if (rc == 0) {
inc_nlink(old_file->d_inode);
-/* BB should we make this contingent on superblock flag NOATIME? */
-/* old_file->d_inode->i_ctime = CURRENT_TIME;*/
- /* parent dir timestamps will update from srv
- within a second, would it really be worth it
- to set the parent dir cifs inode time to zero
- to force revalidate (faster) for it too? */
+ /*
+ * BB should we make this contingent on superblock flag
+ * NOATIME?
+ */
+ /* old_file->d_inode->i_ctime = CURRENT_TIME; */
+ /*
+ * parent dir timestamps will update from srv within a
+ * second, would it really be worth it to set the parent
+ * dir cifs inode time to zero to force revalidate
+ * (faster) for it too?
+ */
}
- /* if not oplocked will force revalidate to get info
- on source file from srv */
+ /*
+ * if not oplocked will force revalidate to get info on source
+ * file from srv
+ */
cifsInode->time = 0;
- /* Will update parent dir timestamps from srv within a second.
- Would it really be worth it to set the parent dir (cifs
- inode) time field to zero to force revalidate on parent
- directory faster ie
- CIFS_I(inode)->time = 0; */
+ /*
+ * Will update parent dir timestamps from srv within a second.
+ * Would it really be worth it to set the parent dir (cifs
+ * inode) time field to zero to force revalidate on parent
+ * directory faster ie
+ *
+ * CIFS_I(inode)->time = 0;
+ */
}
cifs_hl_exit:
- kfree(fromName);
- kfree(toName);
+ kfree(from_name);
+ kfree(to_name);
free_xid(xid);
cifs_put_tlink(tlink);
return rc;
@@ -801,6 +801,7 @@ struct smb_version_operations smb1_operations = {
.unlink = CIFSSMBDelFile,
.rename_pending_delete = cifs_rename_pending_delete,
.rename = CIFSSMBRename,
+ .create_hardlink = CIFSCreateHardLink,
.open = cifs_open_file,
.set_fid = cifs_set_fid,
.close = cifs_close_file,
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> --- fs/cifs/cifsglob.h | 4 +++ fs/cifs/cifsproto.h | 8 ++--- fs/cifs/cifssmb.c | 20 +++++++------ fs/cifs/link.c | 74 ++++++++++++++++++++++++++++++-------------------- fs/cifs/smb1ops.c | 1 + 5 files changed, 63 insertions(+), 44 deletions(-)