Messages in this thread Patch in this message | | | From | Miklos Szeredi <> | Subject | [PATCH] utimensat: AT_EMPTY_PATH support | Date | Wed, 7 Nov 2018 10:15:52 +0100 |
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This makes it possible to use utimensat on an O_PATH file (including symlinks).
It supersedes the nonstandard utimensat(fd, NULL, ...) form.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> --- fs/utimes.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/utimes.c b/fs/utimes.c index bdcf2daf39c1..f9c7ebad19d7 100644 --- a/fs/utimes.c +++ b/fs/utimes.c @@ -97,13 +97,13 @@ long do_utimes(int dfd, const char __user *filename, struct timespec64 *times, goto out; } - if (flags & ~AT_SYMLINK_NOFOLLOW) + if (flags & ~(AT_SYMLINK_NOFOLLOW | AT_EMPTY_PATH)) goto out; if (filename == NULL && dfd != AT_FDCWD) { struct fd f; - if (flags & AT_SYMLINK_NOFOLLOW) + if (flags) goto out; f = fdget(dfd); @@ -119,6 +119,8 @@ long do_utimes(int dfd, const char __user *filename, struct timespec64 *times, if (!(flags & AT_SYMLINK_NOFOLLOW)) lookup_flags |= LOOKUP_FOLLOW; + if (flags & AT_EMPTY_PATH) + lookup_flags |= LOOKUP_EMPTY; retry: error = user_path_at(dfd, filename, lookup_flags, &path); if (error) -- 2.14.3
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