acl/walk-tree-fix-for-deref.patch

69 lines
1.5 KiB
Diff

Subject: acl: Fix WALK_TREE_RECURSIVE for the WALK_TREE_DEREFERENCE case
getfacl.c calls walk_tree() with WALK_TREE_DEREFERENCE. This causes a stat()
of symlinks which in turn causes S_ISDIR(st.st_mode) to be true on symlinks.
This causes getfacl -P to return the contents of symlinks...
e.g.
$ mkdir -p test/sub
$ mkdir test/link
$ touch test/link/file
$ ln -s `pwd`/test/link test/sub/link
$ getfacl -P -R test/sub
# file: test/sub
# owner: philips
# group: users
user::rwx
group::r-x
other::r-x
# file: test/sub/link/file
# owner: philips
# group: users
user::rw-
group::r--
other::r--
After the fix:
$ getfacl -R -P test/sub/
# file: test/sub/
# owner: philips
# group: users
user::rwx
group::r-x
other::r-x
Signed-off-by: Brandon Philips <bphilips@suse.de>
---
libmisc/walk_tree.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
Index: acl-2.2.47/libmisc/walk_tree.c
===================================================================
--- acl-2.2.47.orig/libmisc/walk_tree.c
+++ acl-2.2.47/libmisc/walk_tree.c
@@ -93,8 +93,15 @@ static int walk_tree_rec(const char *pat
have_dir_stat = 1;
}
err = func(path, &st, flags, arg);
+
+ /*
+ * Recurse if WALK_TREE_RECURSIVE and the path is:
+ * a dir not from a symlink
+ * a link and follow_symlinks
+ */
if ((flags & WALK_TREE_RECURSIVE) &&
- (S_ISDIR(st.st_mode) || (S_ISLNK(st.st_mode) && follow_symlinks))) {
+ (!(flags & WALK_TREE_SYMLINK) && S_ISDIR(st.st_mode)) ||
+ ((flags & WALK_TREE_SYMLINK) && follow_symlinks)) {
struct dirent *entry;
/*