A testcase for the umount bug.

H.J. Lu (hjl@lucon.org)
Fri, 11 Dec 1998 21:58:23 -0800 (PST)

Here is a testcase for the floppy umount bug:

# su
# gcc foo.c
# a.out
umount: Device or resource busy

Thanks.

-- 
H.J. Lu (hjl@gnu.org)

---
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/mount.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>


main ()
{
  const char *dirname = "foo";
  const char *devname = "/dev/fd0";
  char *cp;


  rmdir (dirname);


  if (mkdir (dirname, 0777))
    {
      perror ("mkdir");
      return 1;
    }


  if (mount (devname, dirname, "ext2", MS_MGC_VAL, 0))
    {
      perror ("mount");
      return 1;
    }
  
  cp = (char *)malloc((size_t)(strlen(dirname) + sizeof("/fill.tmpX")));


  if (cp != NULL)
    {
      (void) strcat(strcpy(cp, dirname), "/fill.tmp1");
      (void) unlink(cp);
      (void) strcat(strcpy(cp, dirname), "/fill.tmp2");
      (void) unlink(cp);
      (void) strcat(strcpy(cp, dirname), "/fill.tmp3");
      (void) unlink(cp);
      (void) strcat(strcpy(cp, dirname), "/fill.dir");
      (void) rmdir(cp);
      free((void *)cp);
    }


  if (umount (devname))
    {
      perror ("umount");
      return 1;
    }


  return 0;
}


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