From a01cee764f620c154fcccb688d7b1a742f7f687e Mon Sep 17 00:00:00 2001 From: Elliott Hughes Date: Tue, 9 Jun 2020 10:09:03 -0700 Subject: chmod: fix -R and dangling symlinks. Found trying to run the libc++ tests. For coreutils, `info chmod` says: 'chmod' ignores symbolic links encountered during recursive directory traversals. Bug: http://b/155809792 --- toys/posix/chmod.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) (limited to 'toys/posix') diff --git a/toys/posix/chmod.c b/toys/posix/chmod.c index ac53957c..3645ebc8 100644 --- a/toys/posix/chmod.c +++ b/toys/posix/chmod.c @@ -45,14 +45,20 @@ static int do_chmod(struct dirtree *try) if (!dirtree_notdotdot(try)) return 0; - mode = string_to_mode(TT.mode, try->st.st_mode); - if (FLAG(v)) { - char *s = dirtree_path(try, 0); - - printf("chmod '%s' to %s\n", s, TT.mode); - free(s); + if (FLAG(R) && try->parent && S_ISLNK(try->st.st_mode)) { + // Ignore symlinks found during recursion. We'll only try to modify + // symlinks mentioned directly as arguments. We'll fail, of course, + // but that's what you asked for in that case. + } else { + mode = string_to_mode(TT.mode, try->st.st_mode); + if (FLAG(v)) { + char *s = dirtree_path(try, 0); + + printf("chmod '%s' to %s\n", s, TT.mode); + free(s); + } + wfchmodat(dirtree_parentfd(try), try->name, mode); } - wfchmodat(dirtree_parentfd(try), try->name, mode); return FLAG(R)*DIRTREE_RECURSE; } -- cgit v1.2.3