[Bug libc/11611] statvfs sign-extends lower 32 bits of f_fsid field, loses upper 32 bits

["rang at me dot com" <sourceware-bugzilla at sourceware dot org>]

------- Additional Comments From rang at me dot com  2010-05-19 17:47 -------
A really simple test program, if you happen to have a file system around that delivers these FSIDs....

#include <stdio.h>
#include <sys/statfs.h>
#include <sys/statvfs.h>
#include <fcntl.h>

void main(int argc, char *argv[])
{
  int fd;
  struct statvfs v;
  struct statfs suck;

  if (argc != 2) { printf("need mountpoint\n"); return; }

  fd = open(argv[1], O_RDONLY);
  if (fd < 0) perror("open");

  if (fstatvfs(fd, &v) < 0) perror("fstatvfs");

  printf("%016lx\n", v.f_fsid);

  if (fstatfs(fd, &suck) < 0) perror("fstatfs");

  printf("%016lx\n", suck.f_fsid);
}


-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=11611

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