119 lines
3.2 KiB
C
119 lines
3.2 KiB
C
/*
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* Copyright (c) 2019 Darren Tucker
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#define TMPFILE "utimensat.tmp"
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#define TMPFILE2 "utimensat.tmp2"
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#ifndef AT_SYMLINK_NOFOLLOW
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# define AT_SYMLINK_NOFOLLOW 0x80000000
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#endif
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int utimensat(int, const char *, const struct timespec[2], int);
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static void
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cleanup(void)
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{
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(void)unlink(TMPFILE);
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(void)unlink(TMPFILE2);
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}
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static void
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fail(char *msg, long expect, long got)
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{
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int saved_errno = errno;
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if (expect == got && got == 0)
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fprintf(stderr, "utimensat: %s: %s\n", msg,
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strerror(saved_errno));
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else
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fprintf(stderr, "utimensat: %s: expected %ld got %ld\n",
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msg, expect, got);
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cleanup();
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exit(1);
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}
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int
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main(void)
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{
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int fd;
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struct stat sb;
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struct timespec ts[2];
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cleanup();
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if ((fd = open(TMPFILE, O_CREAT, 0600)) == -1)
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fail("open", 0, 0);
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close(fd);
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ts[0].tv_sec = 12345678;
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ts[0].tv_nsec = 23456789;
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ts[1].tv_sec = 34567890;
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ts[1].tv_nsec = 45678901;
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if (utimensat(AT_FDCWD, TMPFILE, ts, AT_SYMLINK_NOFOLLOW) == -1)
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fail("utimensat", 0, 0);
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if (stat(TMPFILE, &sb) == -1)
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fail("stat", 0, 0 );
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if (sb.st_atime != 12345678)
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fail("st_atime", 0, 0 );
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if (sb.st_mtime != 34567890)
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fail("st_mtime", 0, 0 );
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#if 0
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/*
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* Results expected to be rounded to the nearest microsecond.
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* Depends on timestamp precision in kernel and filesystem so
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* disabled by default.
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*/
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if (sb.st_atim.tv_nsec != 23456000)
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fail("atim.tv_nsec", 23456000, sb.st_atim.tv_nsec);
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if (sb.st_mtim.tv_nsec != 45678000)
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fail("mtim.tv_nsec", 45678000, sb.st_mtim.tv_nsec);
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#endif
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/*
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* POSIX specifies that when given a symlink, AT_SYMLINK_NOFOLLOW
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* should update the symlink and not the destination. The compat
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* code doesn't have a way to do this, so where possible it fails
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* with instead of following a symlink when explicitly asked not to.
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* Here we just test that it does not update the destination.
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*/
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if (rename(TMPFILE, TMPFILE2) == -1)
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fail("rename", 0, 0);
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if (symlink(TMPFILE2, TMPFILE) == -1)
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fail("symlink", 0, 0);
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ts[0].tv_sec = 11223344;
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ts[1].tv_sec = 55667788;
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(void)utimensat(AT_FDCWD, TMPFILE, ts, AT_SYMLINK_NOFOLLOW);
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if (stat(TMPFILE2, &sb) == -1)
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fail("stat", 0, 0 );
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if (sb.st_atime == 11223344)
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fail("utimensat symlink st_atime", 0, 0 );
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if (sb.st_mtime == 55667788)
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fail("utimensat symlink st_mtime", 0, 0 );
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cleanup();
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exit(0);
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}
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