From: Miklos Szeredi Move the append-only checks from truncate to notify_change(). Checks for append-only files are always performed by the VFS and not by the filesystem so this belongs in notify_change(), and not in inode_change_ok(). Signed-off-by: Miklos Szeredi --- fs/attr.c | 6 ++++++ fs/namei.c | 2 -- fs/open.c | 8 -------- 3 files changed, 6 insertions(+), 10 deletions(-) Index: linux-2.6/fs/open.c =================================================================== --- linux-2.6.orig/fs/open.c 2008-05-06 11:04:35.000000000 +0200 +++ linux-2.6/fs/open.c 2008-05-06 11:04:36.000000000 +0200 @@ -253,10 +253,6 @@ static long do_sys_truncate(const char _ if (error) goto mnt_drop_write_and_out; - error = -EPERM; - if (IS_APPEND(inode)) - goto mnt_drop_write_and_out; - error = get_write_access(inode); if (error) goto mnt_drop_write_and_out; @@ -321,10 +317,6 @@ static long do_sys_ftruncate(unsigned in if (small && length > MAX_NON_LFS) goto out_putf; - error = -EPERM; - if (IS_APPEND(inode)) - goto out_putf; - error = locks_verify_truncate(inode, file, length); if (!error) error = do_truncate(dentry, length, ATTR_MTIME|ATTR_CTIME, file); Index: linux-2.6/fs/attr.c =================================================================== --- linux-2.6.orig/fs/attr.c 2008-05-06 11:04:35.000000000 +0200 +++ linux-2.6/fs/attr.c 2008-05-06 11:04:36.000000000 +0200 @@ -114,6 +114,12 @@ int notify_change(struct dentry * dentry return -EPERM; } + /* + * IS_IMMUTABLE() is checked by caller for truncation + */ + if ((ia_valid & ATTR_SIZE) && IS_APPEND(inode)) + return -EPERM; + now = current_fs_time(inode->i_sb); attr->ia_ctime = now; Index: linux-2.6/fs/namei.c =================================================================== --- linux-2.6.orig/fs/namei.c 2008-05-06 11:04:29.000000000 +0200 +++ linux-2.6/fs/namei.c 2008-05-06 11:04:36.000000000 +0200 @@ -1639,8 +1639,6 @@ int may_open(struct nameidata *nd, int a if (IS_APPEND(inode)) { if ((flag & FMODE_WRITE) && !(flag & O_APPEND)) return -EPERM; - if (flag & O_TRUNC) - return -EPERM; } /* O_NOATIME can only be set by the owner or superuser */ -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/