[2/8] cifs: add CIFSCreateMFSymLink() and CIFSQueryMFSymLink() as stubs

Commit Message

Stefan Metzmacher Aug. 4, 2010, 2:11 p.m. UTC

None

Patch

diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 473ca80..2358a5f 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -29,6 +29,24 @@ 
 #include "cifs_debug.h"
 #include "cifs_fs_sb.h"
 
+static int
+CIFSCreateMFSymLink(const int xid, struct cifsTconInfo *tcon,
+		    const char *fromName, const char *toName,
+		    const struct nls_table *nls_codepage)
+{
+	int rc = -EOPNOTSUPP;
+	return rc;
+}
+
+static int
+CIFSQueryMFSymLink(const int xid, struct cifsTconInfo *tcon,
+		   const unsigned char *searchName, char **symlinkinfo,
+		   const struct nls_table *nls_codepage)
+{
+	int rc = -EOPNOTSUPP;
+	return rc;
+}
+
 int
 cifs_hardlink(struct dentry *old_file, struct inode *inode,
 	      struct dentry *direntry)
@@ -130,7 +148,8 @@  cifs_follow_link(struct dentry *direntry, struct nameidata *nd)
 	 * but there doesn't seem to be any harm in allowing the client to
 	 * read them.
 	 */
-	if (!(tcon->ses->capabilities & CAP_UNIX)) {
+	if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
+	    && !(tcon->ses->capabilities & CAP_UNIX)) {
 		rc = -EACCES;
 		goto out;
 	}
@@ -141,8 +160,12 @@  cifs_follow_link(struct dentry *direntry, struct nameidata *nd)
 
 	cFYI(1, "Full path: %s inode = 0x%p", full_path, inode);
 
-	rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, &target_path,
-				     cifs_sb->local_nls);
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
+		rc = CIFSQueryMFSymLink(xid, tcon, full_path, &target_path,
+					cifs_sb->local_nls);
+	else
+		rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, &target_path,
+					     cifs_sb->local_nls);
 	kfree(full_path);
 out:
 	if (rc != 0) {
@@ -182,7 +205,10 @@  cifs_symlink(struct inode *inode, struct dentry *direntry, const char *symname)
 	cFYI(1, "symname is %s", symname);
 
 	/* BB what if DFS and this volume is on different share? BB */
-	if (pTcon->unix_ext)
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
+		rc = CIFSCreateMFSymLink(xid, pTcon, full_path, symname,
+					 cifs_sb->local_nls);
+	else if (pTcon->unix_ext)
 		rc = CIFSUnixCreateSymLink(xid, pTcon, full_path, symname,
 					   cifs_sb->local_nls);
 	/* else