lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | #include <errno.h> |
| 2 | #include <fcntl.h> |
| 3 | #include <stdio.h> |
| 4 | #include <stdlib.h> |
| 5 | #include <string.h> |
| 6 | #include <unistd.h> |
| 7 | #include <sys/stat.h> |
| 8 | #include <sys/statvfs.h> |
| 9 | |
| 10 | |
| 11 | static int do_test (void); |
| 12 | #define TEST_FUNCTION do_test () |
| 13 | #define TIMEOUT 5 |
| 14 | #include <test-skeleton.c> |
| 15 | |
| 16 | |
| 17 | static int |
| 18 | do_test (void) |
| 19 | { |
| 20 | char *buf; |
| 21 | int fd; |
| 22 | FILE *fp; |
| 23 | int ch; |
| 24 | struct stat st1; |
| 25 | struct stat st2; |
| 26 | |
| 27 | buf = (char *) malloc (strlen (test_dir) + sizeof "/tst-atime.XXXXXX"); |
| 28 | if (buf == NULL) |
| 29 | { |
| 30 | printf ("cannot allocate memory: %m\n"); |
| 31 | return 1; |
| 32 | } |
| 33 | stpcpy (stpcpy (buf, test_dir), "/tst-atime.XXXXXX"); |
| 34 | |
| 35 | fd = mkstemp (buf); |
| 36 | if (fd == -1) |
| 37 | { |
| 38 | printf ("cannot open temporary file: %m\n"); |
| 39 | return 1; |
| 40 | } |
| 41 | |
| 42 | #ifdef ST_NOATIME |
| 43 | /* Make sure the filesystem doesn't have the noatime option set. If |
| 44 | statvfs is not available just continue. */ |
| 45 | struct statvfs sv; |
| 46 | int e = fstatvfs (fd, &sv); |
| 47 | if (e != ENOSYS) |
| 48 | { |
| 49 | if (e != 0) |
| 50 | { |
| 51 | printf ("cannot statvfs '%s': %m\n", buf); |
| 52 | return 1; |
| 53 | } |
| 54 | |
| 55 | if ((sv.f_flag & ST_NOATIME) != 0) |
| 56 | { |
| 57 | puts ("Bah! The filesystem is mounted with noatime"); |
| 58 | return 0; |
| 59 | } |
| 60 | } |
| 61 | #endif |
| 62 | |
| 63 | /* Make sure it gets removed. */ |
| 64 | add_temp_file (buf); |
| 65 | |
| 66 | if (write (fd, "some string\n", 12) != 12) |
| 67 | { |
| 68 | printf ("cannot write temporary file: %m\n"); |
| 69 | return 1; |
| 70 | } |
| 71 | |
| 72 | if (lseek (fd, 0, SEEK_SET) == (off_t) -1) |
| 73 | { |
| 74 | printf ("cannot reposition temporary file: %m\n"); |
| 75 | return 1; |
| 76 | } |
| 77 | |
| 78 | fp = fdopen (fd, "r"); |
| 79 | if (fp == NULL) |
| 80 | { |
| 81 | printf ("cannot create stream: %m\n"); |
| 82 | return 1; |
| 83 | } |
| 84 | |
| 85 | if (fstat (fd, &st1) == -1) |
| 86 | { |
| 87 | printf ("first stat failed: %m\n"); |
| 88 | return 1; |
| 89 | } |
| 90 | |
| 91 | sleep (2); |
| 92 | |
| 93 | ch = fgetc (fp); |
| 94 | if (ch != 's') |
| 95 | { |
| 96 | printf ("did not read correct character: got '%c', expected 's'\n", ch); |
| 97 | return 1; |
| 98 | } |
| 99 | |
| 100 | if (fstat (fd, &st2) == -1) |
| 101 | { |
| 102 | printf ("second stat failed: %m\n"); |
| 103 | return 1; |
| 104 | } |
| 105 | |
| 106 | if (st1.st_atime > st2.st_atime) |
| 107 | { |
| 108 | puts ("second atime smaller"); |
| 109 | return 1; |
| 110 | } |
| 111 | else if (st1.st_atime == st2.st_atime) |
| 112 | { |
| 113 | puts ("atime has not changed"); |
| 114 | return 1; |
| 115 | } |
| 116 | |
| 117 | fclose (fp); |
| 118 | |
| 119 | return 0; |
| 120 | } |