A nfs client bug?

H.J. Lu (hjl@lucon.org)
Thu, 6 Aug 1998 07:59:04 -0700 (PDT)

Hi,

I think there is a bug in the NFS client code. When I compile it
and run it on a nfs dir, I get

# gcc x.c
# df /net/ocean/linux
Filesystem 1024-blocks Used Available Capacity Mounted on
ocean:/home/work/linux
2020332 1504283 511953 75% /net/ocean/linux
# a.out /net/ocean/linux
lseek: Operation not permitted
lseek is ok
# a.out /
lseek is ok
lseek is ok

It seems to me lseek from kernel will return -1 on a nfs dir when it
reaches the end of directory. I don't think it is the correct behavior.
lseek (dirfd (dp), 0, SEEK_CUR) should return the size of the dir when
it is at the end of directory.

Thanks.

-- 
H.J. Lu (hjl@gnu.org)
---x.c---
#include <unistd.h>
#include <fcntl.h>
#include <dirent.h>
#include <errno.h>


main (int argc, char **argv)
{
  DIR * dp = opendir (argv [1]);
  struct dirent *fp;


  while (fp = readdir (dp));


  if (lseek (dirfd (dp), 0, SEEK_CUR) < 0)
    perror ("lseek");
  else
    printf ("lseek is ok\n");


  if (lseek (dirfd (dp), 1, SEEK_CUR) < 0)
    perror ("lseek");
  else
    printf ("lseek is ok\n");


  closedir (dp);
}


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