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:

Item	Description
`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 *);