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