From 27eb11c9632c66754ea7f67512b3516f998ed213 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 15 Jul 2020 08:15:36 +0200 Subject: fs: move timespec validation into utimes_common Consolidate the validation of the timespec from the two callers into utimes_common. That means it is done a little later (e.g. after the path lookup), but I can't find anything that requires a specific order of processing the errors. Signed-off-by: Christoph Hellwig Acked-by: Linus Torvalds --- fs/utimes.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) (limited to 'fs/utimes.c') diff --git a/fs/utimes.c b/fs/utimes.c index c667517b6eb1..bfd86e81c590 100644 --- a/fs/utimes.c +++ b/fs/utimes.c @@ -23,14 +23,19 @@ static int utimes_common(const struct path *path, struct timespec64 *times) struct inode *inode = path->dentry->d_inode; struct inode *delegated_inode = NULL; + if (times) { + if (!nsec_valid(times[0].tv_nsec) || + !nsec_valid(times[1].tv_nsec)) + return -EINVAL; + if (times[0].tv_nsec == UTIME_NOW && + times[1].tv_nsec == UTIME_NOW) + times = NULL; + } + error = mnt_want_write(path->mnt); if (error) goto out; - if (times && times[0].tv_nsec == UTIME_NOW && - times[1].tv_nsec == UTIME_NOW) - times = NULL; - newattrs.ia_valid = ATTR_CTIME | ATTR_MTIME | ATTR_ATIME; if (times) { if (times[0].tv_nsec == UTIME_OMIT) @@ -76,9 +81,6 @@ static int do_utimes_path(int dfd, const char __user *filename, struct path path; int lookup_flags = 0, error; - if (times && - (!nsec_valid(times[0].tv_nsec) || !nsec_valid(times[1].tv_nsec))) - return -EINVAL; if (flags & ~(AT_SYMLINK_NOFOLLOW | AT_EMPTY_PATH)) return -EINVAL; @@ -107,9 +109,6 @@ static int do_utimes_fd(int fd, struct timespec64 *times, int flags) struct fd f; int error; - if (times && - (!nsec_valid(times[0].tv_nsec) || !nsec_valid(times[1].tv_nsec))) - return -EINVAL; if (flags) return -EINVAL; -- cgit