NAME
getvfsstat —
get list of all mounted file
systems
LIBRARY
library “libc”
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 Thus, some of the information will be out of date,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
HISTORY
The getvfsstat() function first appeared
in NetBSD 3.0 to replace
getfsstat() which appeared in
4.4BSD.