statvfs.h File

AIX Version 4 Files Reference

statvfs.h File

Purpose

Describes the structure of the statistics that are returned by the statvfs subroutines and fsatvfs subroutines.

Description

The statvfs subroutines and fsatvfs subroutines return information on a mounted filesystem in the form of statvfs. The /usr/include/sys/statvfs.h file describes the following fields in the statvfs subroutine:

f_bsize

Preferred file system block size

f_frsize

Fundamental file system block size

f_block

Total number of block f_frsize in the file system.

f_bfree

Total number of free blocks of f_frsize in the file system.

f_bavail

Total number of available blocks of f_frsize that can be used by users without root access.

f_files

Total number of file nodes in the file system

f_ffree

Number of free file nodes in the file system.

f_favail

Number of free file nodes that can be user without root access.

f_fsid

File system ID.

f_basetype

File system type name

f_flag

File system flags:

ST_RDONLY	File system is mounted read only
ST_NOSUID	File system does not support set used ID file modes
ST_NODEV	Device opens are not allowed through mounts.

f_namemax

Maximum length of a component name for this file system

f_fstr

File system specific string.

The following prototypes also appear in the /usr/include/sys/statvfs.h file:

extern int statvfs(const char *, struct statvfs *);

extern int fsatvfs(int, struct statvfs *);

Related Information

The ststvfs subroutine, fstatvfs subroutine.