| 1 | #include <fcntl.h>
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| 2 | #include <stdio.h>
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| 3 | #include <stdlib.h>
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| 4 | #include <string.h>
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| 5 | #include <sys/stat.h>
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| 6 | #include <time.h>
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| 7 | #include <unistd.h>
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| 8 | #include <utime.h>
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| 9 | #include <assert.h>
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| 10 |
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| 11 | static int
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| 12 | ctime_compare (struct stat const *a, struct stat const *b)
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| 13 | {
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| 14 | if (a->st_ctime < b->st_ctime)
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| 15 | return -1;
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| 16 | else if (b->st_ctime < a->st_ctime)
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| 17 | return 1;
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| 18 | else if (a->st_ctim.tv_nsec < b->st_ctim.tv_nsec)
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| 19 | return -1;
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| 20 | else if (b->st_ctim.tv_nsec < a->st_ctim.tv_nsec)
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| 21 | return 1;
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| 22 | else
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| 23 | return 0;
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| 24 | }
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| 25 |
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| 26 | int main ()
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| 27 | {
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| 28 | struct stat st1;
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| 29 | struct stat st2;
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| 30 |
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| 31 | int fd = open ("file", O_RDWR | O_CREAT | O_TRUNC, 0600);
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| 32 | assert (0 <= fd);
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| 33 | assert (fstat (fd, &st1) == 0);
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| 34 | assert (close (fd) == 0);
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| 35 |
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| 36 | sleep (1);
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| 37 |
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| 38 | {
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| 39 | /* Set both times. */
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| 40 | struct utimbuf ts;
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| 41 | ts.actime = ts.modtime = time (NULL);
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| 42 | assert (utime ("file", &ts) == 0);
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| 43 | assert (stat ("file", &st1) == 0);
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| 44 | }
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| 45 |
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| 46 | sleep (1);
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| 47 |
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| 48 | assert (stat ("file", &st2) == 0);
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| 49 |
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| 50 | {
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| 51 | /* Set both times. */
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| 52 | struct utimbuf ts;
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| 53 | ts.actime = ts.modtime = 946684800;
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| 54 | assert (utime ("file", &ts) == 0);
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| 55 |
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| 56 | assert (stat ("file", &st2) == 0);
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| 57 | assert (st2.st_mtime == 946684800);
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| 58 | assert (0 <= st2.st_mtim.tv_nsec);
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| 59 | assert (st2.st_mtim.tv_nsec < 1000000000);
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| 60 | printf ("st1.st_ctime = %lu.%09u, st2.st_ctime = %lu.%09u\n",
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| 61 | (unsigned long) st1.st_ctime, (unsigned int) st1.st_ctim.tv_nsec,
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| 62 | (unsigned long) st2.st_ctime, (unsigned int) st2.st_ctim.tv_nsec);
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| 63 | assert (ctime_compare (&st1, &st2) < 0);
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| 64 | }
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| 65 |
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| 66 | printf ("OK\n");
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| 67 | }
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