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ustat(2) [ultrix man page]

ustat(2)							System Calls Manual							  ustat(2)

Name
       ustat - get file system statistics

Syntax
       #include <sys/types.h>
       #include <ustat.h>

       int ustat (dev, buf)
       dev_t dev;
       struct ustat *buf;

Description
       The  call  returns  information about a mounted file system.  The dev argument is a device number identifying a device containing a mounted
       file system.  The buf argument is a pointer to a structure that includes the following elements:
       daddr_t	f_tfree;       /* Total free blocks (Kbytes) */
       ino_t	f_tinode;      /* Number of free inodes */
       char	f_fname[512];  /* Filsys name */
       char	f_fpack[6];    /* Filsys pack name */
       The f_fpack always returns a null string.

Environment
   SYSTEM V
       Differs from System V definition in that the size of the f_fname structure element is 512 instead of 6, and the dev parameter is type dev_t
       instead of int.

Diagnostics
       The call fails if any of the following is true:

       [EINVAL]       The dev argument is not the device number of a device containing a mounted file system.

       [EFAULT]       The buf argument points outside the process's allocated address space.

       [ETIMEDOUT]    A  connect  request  or remote file operation failed, because the connected party did not properly respond after a period of
		      time that is dependent on the communications protocol.

See Also
       stat(2), fs(5)

																	  ustat(2)

Check Out this Related Man Page

USTAT(2)						     Linux Programmer's Manual							  USTAT(2)

NAME
ustat - get file system statistics SYNOPSIS
#include <sys/types.h> #include <unistd.h> /* libc[45] */ #include <ustat.h> /* glibc2 */ int ustat(dev_t dev, struct ustat *ubuf); DESCRIPTION
ustat() returns information about a mounted file system. dev is a device number identifying a device containing a mounted file system. ubuf is a pointer to a ustat structure that contains the following members: 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 */ The last two fields, f_fname and f_fpack, are not implemented and will always be filled with null bytes (''). RETURN VALUE
On success, zero is returned and the ustat structure pointed to by ubuf will be filled in. On error, -1 is returned, and errno is set appropriately. ERRORS
EFAULT ubuf points outside of your accessible address space. EINVAL dev does not refer to a device containing a mounted file system. ENOSYS The mounted file system referenced by dev does not support this operation, or any version of Linux before 1.3.16. CONFORMING TO
SVr4. NOTES
ustat() is deprecated and has only been provided for compatibility. All new programs should use statfs(2) instead. HP-UX Notes The HP-UX version of the ustat structure has an additional field, f_blksize, that is unknown elsewhere. HP-UX warns: For some file sys- tems, the number of free inodes does not change. Such file systems will return -1 in the field f_tinode. For some file systems, inodes are dynamically allocated. Such file systems will return the current number of free inodes. SEE ALSO
stat(2), statfs(2) COLOPHON
This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. Linux 2003-08-04 USTAT(2)
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