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Fix futimes() regression

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Fixes #647
This commit is contained in:
Justine Tunney 2022-10-05 19:25:07 -07:00
parent f155205eb0
commit 81ee11a16e
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22 changed files with 200 additions and 138 deletions
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29
libc/calls/futimes.c
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@ -16,26 +16,45 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/asan.internal.h"
#include "libc/calls/struct/itimerval.internal.h"
#include "libc/calls/struct/timespec.h"
#include "libc/calls/struct/timespec.internal.h"
#include "libc/calls/struct/timeval.h"
#include "libc/dce.h"
#include "libc/intrin/strace.internal.h"
#include "libc/sysv/errfuns.h"
/**
* Sets atime/mtime on file descriptor.
*
* @param ts is atime/mtime, or null for current time
* @note better than microsecond precision on most platforms
* @see fstat() for reading timestamps
* @return 0 on success, or -1 w/ errno
* @raise ENOTSUP if `fd` is on zip filesystem
* @raise EBADF if `fd` isn't an open file descriptor
* @raise EPERM if pledge() is in play without `fattr` promise
* @raise EINVAL if `tv` specifies a microsecond value that's out of range
* @raise ENOSYS on RHEL5 or bare metal
* @see futimens() for modern version
* @asyncsignalsafe
* @threadsafe
*/
int futimes(int fd, const struct timeval tv[2]) {
// TODO(jart): does this work on rhel5? what's up with this?
int rc;
struct timespec ts[2];
if (tv) {
ts[0].tv_sec = tv[0].tv_sec;
ts[0].tv_nsec = tv[0].tv_usec * 1000;
ts[1].tv_sec = tv[1].tv_sec;
ts[1].tv_nsec = tv[1].tv_usec * 1000;
return utimensat(fd, NULL, ts, 0);
rc = __utimens(fd, 0, ts, 0);
} else {
return utimensat(fd, NULL, NULL, 0);
rc = __utimens(fd, 0, 0, 0);
}
STRACE("futimes(%d, {%s, %s}) → %d% m", fd, DescribeTimeval(0, tv),
DescribeTimeval(0, tv ? tv + 1 : 0), rc);
return rc;
}