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/*
* Copyright (c) 2019 Darren Tucker
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define TMPFILE "utimensat.tmp"
#define TMPFILE2 "utimensat.tmp2"
#ifndef AT_SYMLINK_NOFOLLOW
# define AT_SYMLINK_NOFOLLOW 0x80000000
#endif
int utimensat(int, const char *, const struct timespec[2], int);
void
fail(char *msg, long expect, long got)
{
int saved_errno = errno;
if (expect == got && got == 0)
fprintf(stderr, "utimensat: %s: %s\n", msg,
strerror(saved_errno));
else
fprintf(stderr, "utimensat: %s: expected %ld got %ld\n",
msg, expect, got);
exit(1);
}
int
main(void)
{
int fd;
struct stat sb;
struct timespec ts[2];
if ((fd = open(TMPFILE, O_CREAT, 0600)) == -1)
fail("open", 0, 0);
close(fd);
ts[0].tv_sec = 12345678;
ts[0].tv_nsec = 23456789;
ts[1].tv_sec = 34567890;
ts[1].tv_nsec = 45678901;
if (utimensat(AT_FDCWD, TMPFILE, ts, AT_SYMLINK_NOFOLLOW) == -1)
fail("utimensat", 0, 0);
if (stat(TMPFILE, &sb) == -1)
fail("stat", 0, 0 );
if (sb.st_atime != 12345678)
fail("st_atime", 0, 0 );
if (sb.st_mtime != 34567890)
fail("st_mtime", 0, 0 );
#if 0
/*
* Results expected to be rounded to the nearest microsecond.
* Depends on timestamp precision in kernel and filesystem so
* disabled by default.
*/
if (sb.st_atim.tv_nsec != 23456000)
fail("atim.tv_nsec", 23456000, sb.st_atim.tv_nsec);
if (sb.st_mtim.tv_nsec != 45678000)
fail("mtim.tv_nsec", 45678000, sb.st_mtim.tv_nsec);
#endif
if (rename(TMPFILE, TMPFILE2) == -1)
fail("rename", 0, 0);
if (symlink(TMPFILE2, TMPFILE) == -1)
fail("symlink", 0, 0);
if (utimensat(AT_FDCWD, TMPFILE, ts, AT_SYMLINK_NOFOLLOW) != -1)
fail("utimensat followed symlink", 0, 0);
if (!(unlink(TMPFILE) == 0 && unlink(TMPFILE2) == 0))
fail("unlink", 0, 0);
exit(0);
}
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