GETVFSSTAT(2) BSD System Calls Manual GETVFSSTAT(2)NAME
getvfsstat -- get list of all mounted file systems
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <sys/types.h>
#include <sys/statvfs.h>
int
getvfsstat(struct statvfs *buf, size_t bufsize, int flags);
DESCRIPTION
getvfsstat() returns information about all mounted file systems. buf is a pointer to an array of statvfs structures defined in statvfs(5).
The buffer is filled with an array of statvfs structures, one for each mounted file system up to the size specified by bufsize.
If buf is given as NULL, getvfsstat() returns just the number of mounted file systems.
Normally flags should be specified as ST_WAIT. If flags is set to ST_NOWAIT, getvfsstat() will return the information it has available with-
out requesting an update from each file system. Thus, some of the information will be out of date, but getvfsstat() will not block waiting
for information from a file system that is unable to respond.
RETURN VALUES
Upon successful completion, the number of statvfs structures is returned. Otherwise, -1 is returned and the global variable errno is set to
indicate the error.
ERRORS
getvfsstat() fails if one or more of the following are true:
[EFAULT] buf points to an invalid address.
[EIO] An I/O error occurred while reading from or writing to the file system.
SEE ALSO statvfs(2), getmntinfo(3), fstab(5), mount(8)HISTORY
The getvfsstat() function first appeared in NetBSD 3.0 to replace getfsstat() which appeared in 4.4BSD.
BSD May 19, 2006 BSD
Check Out this Related Man Page
GETMNTINFO(3) BSD Library Functions Manual GETMNTINFO(3)NAME
getmntinfo -- get information about mounted file systems
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <sys/types.h>
#include <sys/statvfs.h>
int
getmntinfo(struct statvfs **mntbufp, int flags);
DESCRIPTION
The getmntinfo() function returns an array of statvfs structures describing each currently mounted file system (see statvfs(2)).
The getmntinfo() function passes its flags parameter transparently to getvfsstat(2).
RETURN VALUES
On successful completion, getmntinfo() returns a count of the number of elements in the array. The pointer to the array is stored into
mntbufp.
If an error occurs, zero is returned and the external variable errno is set to indicate the error. Although the pointer mntbufp will be
unmodified, any information previously returned by getmntinfo() will be lost.
ERRORS
The getmntinfo() function may fail and set errno for any of the errors specified for the library routines getvfsstat(2) or malloc(3).
SEE ALSO getvfsstat(2), mount(2), statvfs(2), mount(8)HISTORY
The getmntinfo() function first appeared in 4.4BSD. It was converted from using getfsstat(2) to getvfsstat(2) in NetBSD 3.0.
BUGS
The getmntinfo() function writes the array of structures to an internal static object and returns a pointer to that object. Subsequent calls
to getmntinfo() will modify the same object.
The memory allocated by getmntinfo() cannot be free(3)'d by the application.
BSD April 14, 2004 BSD
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