1 files changed, 17 insertions, 8 deletions

diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index 2686ad4c002..1e252dfc529 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -163,7 +163,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
         if (error)
                 goto out;
 
-        error = permission(dir, MAY_WRITE | MAY_EXEC, NULL);
+        error = gfs2_permission(dir, MAY_WRITE | MAY_EXEC);
         if (error)
                 goto out_gunlock;
 
@@ -669,7 +669,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
                         }
                 }
         } else {
-                error = permission(ndir, MAY_WRITE | MAY_EXEC, NULL);
+                error = gfs2_permission(ndir, MAY_WRITE | MAY_EXEC);
                 if (error)
                         goto out_gunlock;
 
@@ -704,7 +704,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
         /* Check out the dir to be renamed */
 
         if (dir_rename) {
-                error = permission(odentry->d_inode, MAY_WRITE, NULL);
+                error = gfs2_permission(odentry->d_inode, MAY_WRITE);
                 if (error)
                         goto out_gunlock;
         }
@@ -891,7 +891,7 @@ static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
  * Returns: errno
  */
 
-static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
+int gfs2_permission(struct inode *inode, int mask)
 {
         struct gfs2_inode *ip = GFS2_I(inode);
         struct gfs2_holder i_gh;
@@ -905,13 +905,22 @@ static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
                 unlock = 1;
         }
 
-        error = generic_permission(inode, mask, gfs2_check_acl);
+        if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode))
+                error = -EACCES;
+        else
+                error = generic_permission(inode, mask, gfs2_check_acl);
         if (unlock)
                 gfs2_glock_dq_uninit(&i_gh);
 
         return error;
 }
 
+static int gfs2_iop_permission(struct inode *inode, int mask,
+                               struct nameidata *nd)
+{
+        return gfs2_permission(inode, mask);
+}
+
 static int setattr_size(struct inode *inode, struct iattr *attr)
 {
         struct gfs2_inode *ip = GFS2_I(inode);
@@ -1141,7 +1150,7 @@ static int gfs2_removexattr(struct dentry *dentry, const char *name)
 }
 
 const struct inode_operations gfs2_file_iops = {
-        .permission = gfs2_permission,
+        .permission = gfs2_iop_permission,
         .setattr = gfs2_setattr,
         .getattr = gfs2_getattr,
         .setxattr = gfs2_setxattr,
@@ -1160,7 +1169,7 @@ const struct inode_operations gfs2_dir_iops = {
         .rmdir = gfs2_rmdir,
         .mknod = gfs2_mknod,
         .rename = gfs2_rename,
-        .permission = gfs2_permission,
+        .permission = gfs2_iop_permission,
         .setattr = gfs2_setattr,
         .getattr = gfs2_getattr,
         .setxattr = gfs2_setxattr,
@@ -1172,7 +1181,7 @@ const struct inode_operations gfs2_dir_iops = {
 const struct inode_operations gfs2_symlink_iops = {
         .readlink = gfs2_readlink,
         .follow_link = gfs2_follow_link,
-        .permission = gfs2_permission,
+        .permission = gfs2_iop_permission,
         .setattr = gfs2_setattr,
         .getattr = gfs2_getattr,
         .setxattr = gfs2_setxattr,