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 without 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 Thus, some of the information will be out of date, but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.