44 lines
960 B
C
44 lines
960 B
C
/* Check for a sim bug, whereby an invalid seek (to a negative offset)
|
|
did not return an error. */
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
FILE *f;
|
|
const char fname[] = "sk1test.dat";
|
|
const char tsttxt[]
|
|
= "A random line of text, used to test correct read, write and seek.\n";
|
|
char buf[sizeof tsttxt] = "";
|
|
int fd;
|
|
|
|
f = fopen (fname, "wb");
|
|
if (f == NULL
|
|
|| fwrite (tsttxt, 1, strlen (tsttxt), f) != strlen (tsttxt)
|
|
|| fclose (f) != 0)
|
|
{
|
|
printf ("fail\n");
|
|
exit (1);
|
|
}
|
|
|
|
fd = open (fname, O_RDONLY);
|
|
if (fd < 0
|
|
|| lseek (fd, -1L, SEEK_CUR) != -1
|
|
|| errno != EINVAL
|
|
|| read (fd, buf, strlen (tsttxt)) != strlen (tsttxt)
|
|
|| strcmp (buf, tsttxt) != 0)
|
|
{
|
|
printf ("fail\n");
|
|
exit (1);
|
|
}
|
|
|
|
printf ("pass\n");
|
|
exit (0);
|
|
}
|