int
getvfsstat(
struct statvfs *buf
, size_t bufsize
, int flags
)
)
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Thus, some of the information will be out of date, but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.
statvfs
structures is returned.
Otherwise, -1 is returned and the global variable
errno
is set to indicate the error.
)
fails if one or more of the following are true:
EFAULT
]
buf
points to an invalid address.
EIO
]
)
function first appeared in
NetBSD3.0
to replace
getfsstat(
)
which appeared in
4.4BSD.