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glibc/io/test-utime.c
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/* Copyright (C) 1994-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <fcntl.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <sys/stat.h> | |
#include <unistd.h> | |
#include <utime.h> | |
#include <time.h> | |
int | |
main (int argc, char *argv[]) | |
{ | |
char file[L_tmpnam]; | |
struct utimbuf ut; | |
struct stat st; | |
struct stat stnow; | |
time_t now1, now2; | |
int fd; | |
if (tmpnam (file) == 0) | |
{ | |
perror ("tmpnam"); | |
return 1; | |
} | |
fd = creat (file, 0666); | |
if (fd < 0) | |
{ | |
perror ("creat"); | |
return 1; | |
} | |
close (fd); | |
/* Test utime with arg */ | |
ut.actime = 500000000; | |
ut.modtime = 500000001; | |
if (utime (file, &ut)) | |
{ | |
perror ("utime"); | |
remove (file); | |
return 1; | |
} | |
if (stat (file, &st)) | |
{ | |
perror ("stat"); | |
remove (file); | |
return 1; | |
} | |
/* Test utime with NULL. | |
Since there's a race condition possible here, we check | |
the time before and after the call to utime. */ | |
now1 = time (NULL); | |
if (now1 == (time_t)-1) | |
{ | |
perror ("time"); | |
remove (file); | |
return 1; | |
} | |
/* The clocks used to set the modification time and that used in the | |
time() call need not be the same. They need not have the same | |
precision. Therefore we delay the following operation by one | |
second which makes sure we can compare with second precision. */ | |
sleep (1); | |
if (utime (file, NULL)) | |
{ | |
perror ("utime NULL"); | |
remove (file); | |
return 1; | |
} | |
sleep (1); | |
now2 = time (NULL); | |
if (now2 == (time_t)-1) | |
{ | |
perror ("time"); | |
remove (file); | |
return 1; | |
} | |
if (stat (file, &stnow)) | |
{ | |
perror ("stat"); | |
remove (file); | |
return 1; | |
} | |
remove (file); | |
if (st.st_mtime != ut.modtime) | |
{ | |
printf ("modtime %jd != %jd\n", | |
(intmax_t) st.st_mtime, (intmax_t) ut.modtime); | |
return 1; | |
} | |
if (st.st_atime != ut.actime) | |
{ | |
printf ("actime %jd != %jd\n", | |
(intmax_t) st.st_atime, (intmax_t) ut.actime); | |
return 1; | |
} | |
if (stnow.st_mtime < now1 || stnow.st_mtime > now2) | |
{ | |
printf ("modtime %jd <%jd >%jd\n", | |
(intmax_t) stnow.st_mtime, (intmax_t) now1, (intmax_t) now2); | |
return 1; | |
} | |
if (stnow.st_atime < now1 || stnow.st_atime > now2) | |
{ | |
printf ("actime %jd <%jd >%jd\n", | |
(intmax_t) stnow.st_atime, (intmax_t) now1, (intmax_t) now2); | |
return 1; | |
} | |
puts ("Test succeeded."); | |
return 0; | |
} |