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GETFSSTAT(2) FreeBSD System Calls Manual GETFSSTAT(2)
NAME
getfsstat -- get list of all mounted file systems
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <sys/param.h>
#include <sys/ucred.h>
#include <sys/mount.h>
int
getfsstat(struct statfs *buf, long bufsize, int flags);
DESCRIPTION
The getfsstat() system call returns information about all mounted file
systems. The buf argument is a pointer to statfs structures, as
described in statfs(2).
Fields that are undefined for a particular file system are set to -1.
The buffer is filled with an array of fsstat structures, one for each
mounted file system up to the byte count specified by bufsize. Note, the
bufsize argument is the number of bytes that buf can hold, not the count
of statfs structures it will hold.
If buf is given as NULL, getfsstat() returns just the number of mounted
file systems.
Normally flags should be specified as MNT_WAIT. If flags is set to
MNT_NOWAIT, getfsstat() will return the information it has available
without requesting an update from each file system. Thus, some of the
information will be out of date, but getfsstat() will not block waiting
for information from a file system that is unable to respond.
RETURN VALUES
Upon successful completion, the number of fsstat structures is returned.
Otherwise, -1 is returned and the global variable errno is set to indi-
cate the error.
ERRORS
The getfsstat() system call fails if one or more of the following are
true:
[EFAULT] The buf argument points to an invalid address.
[EIO] An I/O error occurred while reading from or writing to
the file system.
SEE ALSO
statfs(2), fstab(5), mount(8)
HISTORY
The getfsstat() system call first appeared in 4.4BSD.
FreeBSD 6.2 November 20, 2003 FreeBSD 6.2
Man(1) output converted with
man2html and wrapped by fishsponge
This page was generated on Wed Sep 19 20:03:28 BST 2007
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