src/regression/lseek-large.c

   1 // lseek should work with >2G offset
   2 #include <stdio.h>
   3 #include <sys/types.h>
   4 #include <unistd.h>
   5 #include <string.h>
   6 #include <errno.h>
   7 #include "test.h"
   8
   9 #define A(c) ((c) || (t_error(#c " failed: %s\n", strerror(errno)), 0))
  10
  11 int main(void)
  12 {
  13         off_t a[] = {0x7fffffff, 0x80000000, 0x80000001, 0xffffffff, 0x100000001, 0x1ffffffff, 0 };
  14         off_t r;
  15         FILE *f;
  16         int fd;
  17         int i;
  18
  19         A((f = tmpfile()) != 0);
  20         A((fd = fileno(f)) != -1);
  21         for (i = 0; a[i]; i++) {
  22                 r = lseek(fd, a[i], SEEK_SET);
  23                 if (r != a[i])
  24                         t_error("lseek(fd, 0x%llx, SEEK_SET) got 0x%llx\n", (long long)a[i], (long long)r);
  25         }
  26         return t_status;
  27 }