mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-05 21:00:05 +00:00
7a9a26813e
2002-07-22 Philip Blundell <philb@gnu.org> * sysdeps/unix/sysv/linux/arm/errlist.c: Remove extra weak alias definiton of _old_sys_nerr. Define _old_sys_errlist as strong alias.
124 lines
2.1 KiB
C
124 lines
2.1 KiB
C
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
|
|
static char *fname;
|
|
|
|
|
|
static void do_prepare (void);
|
|
#define PREPARE(argc, argv) do_prepare ()
|
|
static int do_test (void);
|
|
#define TEST_FUNCTION do_test ()
|
|
#include <test-skeleton.c>
|
|
|
|
|
|
static void
|
|
do_prepare (void)
|
|
{
|
|
static const char pattern[] = "12345678901234567890";
|
|
int fd = create_temp_file ("bug-fseek.", &fname);
|
|
if (fd == -1)
|
|
{
|
|
printf ("cannot create temporary file: %m\n");
|
|
exit (1);
|
|
}
|
|
|
|
if (write (fd, pattern, sizeof (pattern)) != sizeof (pattern))
|
|
{
|
|
perror ("short write");
|
|
abort ();
|
|
}
|
|
close (fd);
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
FILE *f;
|
|
int result = 0;
|
|
char buf[10];
|
|
|
|
|
|
if ((f = fopen (fname, "r")) == (FILE *) NULL)
|
|
{
|
|
perror ("fopen(\"r\")");
|
|
}
|
|
|
|
fread (buf, 3, 1, f);
|
|
errno = 0;
|
|
if (fseek (f, -10, SEEK_CUR) == 0)
|
|
{
|
|
printf ("fseek() for r to before start of file worked!\n");
|
|
result = 1;
|
|
}
|
|
else if (errno != EINVAL)
|
|
{
|
|
printf ("\
|
|
fseek() for r to before start of file did not set errno to EINVAL. \
|
|
Got %d instead\n",
|
|
errno);
|
|
result = 1;
|
|
}
|
|
|
|
fclose (f);
|
|
|
|
|
|
if ((f = fopen (fname, "r+")) == (FILE *) NULL)
|
|
{
|
|
perror ("fopen(\"r+\")");
|
|
}
|
|
|
|
fread (buf, 3, 1, f);
|
|
errno = 0;
|
|
if (fseek (f, -10, SEEK_CUR) == 0)
|
|
{
|
|
printf ("fseek() for r+ to before start of file worked!\n");
|
|
result = 1;
|
|
}
|
|
else if (errno != EINVAL)
|
|
{
|
|
printf ("\
|
|
fseek() for r+ to before start of file did not set errno to EINVAL. \
|
|
Got %d instead\n",
|
|
errno);
|
|
result = 1;
|
|
}
|
|
|
|
fclose (f);
|
|
|
|
|
|
if ((f = fopen (fname, "r+")) == (FILE *) NULL)
|
|
{
|
|
perror ("fopen(\"r+\")");
|
|
}
|
|
|
|
fread (buf, 3, 1, f);
|
|
if (ftell (f) != 3)
|
|
{
|
|
puts ("ftell failed");
|
|
return 1;
|
|
}
|
|
errno = 0;
|
|
if (fseek (f, -10, SEEK_CUR) == 0)
|
|
{
|
|
printf ("fseek() for r+ to before start of file worked!\n");
|
|
result = 1;
|
|
}
|
|
else if (errno != EINVAL)
|
|
{
|
|
printf ("\
|
|
fseek() for r+ to before start of file did not set errno to EINVAL. \
|
|
Got %d instead\n",
|
|
errno);
|
|
result = 1;
|
|
}
|
|
|
|
fclose (f);
|
|
|
|
return result;
|
|
}
|