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VFS_STATFS (9)
>> VFS_STATFS (9) ( FreeBSD man: Ядро )
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NAME
VFS_STATFS
- return file system status
SYNOPSIS
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/vnode.h>
int
VFS_STATFS (struct mount *mp struct statfs *sbp struct thread *td);
DESCRIPTION
The
VFS_STATFS ();
macro returns various pieces of information about the file system,
including recommended I/O sizes, free space, free inodes, etc.
The arguments it expects are:
- Fa mp
-
The file system.
- Fa sbp
-
A
Vt statfs
structure, as defined by
In sys/mount.h ,
into which information is placed about the file system.
- Fa td
-
The thread which is querying the file system.
The fields of
Vt struct statfs
related to the file system are as follows:
- f_type
-
Type of file system.
- f_flags
-
A copy of mount exported flags.
- f_bsize
-
Fragment size.
- f_iosize
-
Optimal transfer block size.
- f_blocks
-
The total number of data blocks in the file system.
- f_bfree
-
The number of free blocks in the file system.
- f_bavail
-
The number of free blocks available to non-superuser processes.
- f_files
-
The total number of file nodes in the file system.
- f_ffree
-
The number of free nodes available to non-superuser processes.
- f_syncwrites
-
The number of synchronous writes since the file system was mounted.
- f_asyncwrites
-
The number of asynchronous writes since the file system was mounted.
- f_syncreads
-
The number of synchronous reads since the file system was mounted.
- f_asyncreads
-
The number of asynchronous reads since the file system was mounted.
- f_namemax
-
The maximum file name length for this file system.
- f_owner
-
The user ID of the user that mounted the file system.
- f_fsid
-
Unique file system ID.
- f_fstypename
-
The file system type name; a string of at most
MFSNAMELEN
bytes.
- f_mntfromname
-
The device name the file system was mounted from; a string of at most
MNAMELEN
bytes.
- f_mntonname
-
The name of the directory on which the file system is mounted;
a string of at most
MNAMELEN
bytes.
SEE ALSO
VFS(9),
vnode(9)
AUTHORS
This manual page was written by
An Doug Rabson .
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- SEE ALSO
-
- AUTHORS
-
