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.