ustat(2)                                                    ustat(2)


       NAME
             ustat - get file system statistics

       SYNOPSIS
             #include <sys/types.h>
             #include <ustat.h>
             int ustat(dev_t dev, struct ustat *buf);

       DESCRIPTION
             ustat returns information about a mounted file system.  dev is
             a device number identifying a device containing a mounted file
             system [see makedev(3C)].  buf is a pointer to a ustat
             structure that includes the following elements:

                   daddr_t   f_tfree;       /* Total free blocks */
                   ino_t     f_tinode;      /* Number of free inodes */
                   char      f_fname[6];    /* Filsys name */
                   char      f_fpack[6];    /* Filsys pack name */

          Return Values
             On success, ustat returns 0.  On failure, ustat returns -1 and
             sets errno to identify the error.

          Errors
             In the following conditions, ustat fails and sets errno to:

            EINVAL dev is not the device number of a device containing a
                    mounted file system.

            EFAULT buf points outside the process's allocated address
                    space.

            EINTR  A signal was caught during a ustat system call.

            ENOLINK
                    dev is on a remote machine and the link to that machine
                    is no longer active.

            ECOMM  dev is on a remote machine and the link to that machine
                    is no longer active.

       REFERENCES
             makedev(3C), stat(2), statvfs(2)





                           Copyright 1994 Novell, Inc.               Page 1

      ustat(2)                                                    ustat(2)


      NOTICES
            The ustat(2) interface was defined obsolete in UNIX System V
            Release 4.  Although support for ustat is maintained in
            Release 4, support will be discontinued in the next major
            release.  All remaining code using this interface must be
            converted to use the replacement interface statvfs(2).










































                          Copyright 1994 Novell, Inc.               Page 2