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#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
static int do_test (void);
#define TEST_FUNCTION do_test ()
#include <test-skeleton.c>
static int
do_test (void)
{
char *buf;
int fd;
FILE *fp;
int ch;
struct stat st1;
struct stat st2;
buf = (char *) malloc (strlen (test_dir) + sizeof "/tst-atime.XXXXXX");
if (buf == NULL)
{
printf ("cannot allocate memory: %m\n");
return 1;
}
stpcpy (stpcpy (buf, test_dir), "/tst-atime.XXXXXX");
fd = mkstemp (buf);
if (fd == -1)
{
printf ("cannot open temporary file: %m\n");
return 1;
}
#ifdef ST_NOATIME
/* Make sure the filesystem doesn't have the noatime option set. If
statvfs is not available just continue. */
struct statvfs sv;
int e = fstatvfs (fd, &sv);
if (e != ENOSYS)
{
if (e != 0)
{
printf ("cannot statvfs '%s': %m\n", buf);
return 1;
}
if ((sv.f_flag & ST_NOATIME) != 0)
{
puts ("Bah! The filesystem is mounted with noatime");
return 0;
}
}
#endif
/* Make sure it gets removed. */
add_temp_file (buf);
if (write (fd, "some string\n", 12) != 12)
{
printf ("cannot write temporary file: %m\n");
return 1;
}
if (lseek (fd, 0, SEEK_SET) == (off_t) -1)
{
printf ("cannot reposition temporary file: %m\n");
return 1;
}
fp = fdopen (fd, "r");
if (fp == NULL)
{
printf ("cannot create stream: %m\n");
return 1;
}
if (fstat (fd, &st1) == -1)
{
printf ("first stat failed: %m\n");
return 1;
}
sleep (2);
ch = fgetc (fp);
if (ch != 's')
{
printf ("did not read correct character: got '%c', expected 's'\n", ch);
return 1;
}
if (fstat (fd, &st2) == -1)
{
printf ("second stat failed: %m\n");
return 1;
}
if (st1.st_atime > st2.st_atime)
{
puts ("second atime smaller");
return 1;
}
else if (st1.st_atime == st2.st_atime)
{
puts ("atime has not changed");
return 1;
}
fclose (fp);
return 0;
}
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