diff options
| author | Pavel Shilovsky <pshilovsky@samba.org> | 2013-08-14 17:25:21 +0200 |
|---|---|---|
| committer | Steve French <smfrench@gmail.com> | 2013-09-08 21:27:34 +0200 |
| commit | b42bf88828cde60772dc08201d0a4f1a0663d7bc (patch) | |
| tree | 3b019e905c83aba6578b56ae5a49669f59db23cf /fs/cifs/link.c | |
| parent | cifs: display iocharset= option in /proc/mounts (diff) | |
| download | linux-b42bf88828cde60772dc08201d0a4f1a0663d7bc.tar.xz linux-b42bf88828cde60772dc08201d0a4f1a0663d7bc.zip | |
CIFS: Implement follow_link for SMB2
that allows to access files through symlink created on a server.
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs/link.c')
| -rw-r--r-- | fs/cifs/link.c | 24 |
1 files changed, 5 insertions, 19 deletions
diff --git a/fs/cifs/link.c b/fs/cifs/link.c index 562044f700e5..7e36ceba0c7a 100644 --- a/fs/cifs/link.c +++ b/fs/cifs/link.c @@ -509,6 +509,7 @@ cifs_follow_link(struct dentry *direntry, struct nameidata *nd) struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); struct tcon_link *tlink = NULL; struct cifs_tcon *tcon; + struct TCP_Server_Info *server; xid = get_xid(); @@ -519,25 +520,7 @@ cifs_follow_link(struct dentry *direntry, struct nameidata *nd) goto out; } tcon = tlink_tcon(tlink); - - /* - * For now, we just handle symlinks with unix extensions enabled. - * Eventually we should handle NTFS reparse points, and MacOS - * symlink support. For instance... - * - * rc = CIFSSMBQueryReparseLinkInfo(...) - * - * For now, just return -EACCES when the server doesn't support posix - * extensions. Note that we still allow querying symlinks when posix - * extensions are manually disabled. We could disable these as well - * but there doesn't seem to be any harm in allowing the client to - * read them. - */ - if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) && - !cap_unix(tcon->ses)) { - rc = -EACCES; - goto out; - } + server = tcon->ses->server; full_path = build_path_from_dentry(direntry); if (!full_path) @@ -559,6 +542,9 @@ cifs_follow_link(struct dentry *direntry, struct nameidata *nd) if ((rc != 0) && cap_unix(tcon->ses)) rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, &target_path, cifs_sb->local_nls); + else if (rc != 0 && server->ops->query_symlink) + rc = server->ops->query_symlink(xid, tcon, full_path, + &target_path, cifs_sb); kfree(full_path); out: |