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| author | Érico Rolim <ericonr@disroot.org> | 2020-11-12 17:52:23 -0300 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2020-11-29 00:57:24 -0500 |
| commit | c5d118ebbcfe41d928d8ffc913bc532c59237189 (patch) | |
| tree | 9ee3a3d08b232c8832dc6c2e485bca0ab55e5398 | |
| parent | 67f774625e84ad941d722f745f085c0bd4ae7582 (diff) | |
| download | musl-c5d118ebbcfe41d928d8ffc913bc532c59237189.tar.gz | |
fix segfault in lutimes when tv argument is NULL
calling lutimes with tv=0 is valid if the application wants to set the
timestamps to the current time. this commit makes it so the timespec
struct is populated with values from tv only if tv != 0 and calls
utimensat with times=0 if tv == 0.
| -rw-r--r-- | src/legacy/lutimes.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/legacy/lutimes.c b/src/legacy/lutimes.c index 2e5502d1..dd465923 100644 --- a/src/legacy/lutimes.c +++ b/src/legacy/lutimes.c @@ -6,9 +6,11 @@ int lutimes(const char *filename, const struct timeval tv[2]) { struct timespec times[2]; - times[0].tv_sec = tv[0].tv_sec; - times[0].tv_nsec = tv[0].tv_usec * 1000; - times[1].tv_sec = tv[1].tv_sec; - times[1].tv_nsec = tv[1].tv_usec * 1000; - return utimensat(AT_FDCWD, filename, times, AT_SYMLINK_NOFOLLOW); + if (tv) { + times[0].tv_sec = tv[0].tv_sec; + times[0].tv_nsec = tv[0].tv_usec * 1000; + times[1].tv_sec = tv[1].tv_sec; + times[1].tv_nsec = tv[1].tv_usec * 1000; + } + return utimensat(AT_FDCWD, filename, tv ? times : 0, AT_SYMLINK_NOFOLLOW); } |