getvfsstat(2) [netbsd man page]

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  Thus, some of the information will be out of date, but getvfsstat() will not block waiting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

STATVFS(2)						      BSD System Calls Manual							STATVFS(2)

NAME

     statvfs, statvfs1, fstatvfs, fstatvfs1 -- get file system statistics

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <sys/statvfs.h>

     int
     statvfs(const char *path, struct statvfs *buf);

     int
     statvfs1(const char *path, struct statvfs *buf, int flags);

     int
     fstatvfs(int fd, struct statvfs *buf);

     int
     fstatvfs1(int fd, struct statvfs *buf, int flags);

DESCRIPTION

     statvfs() and statvfs1() return information about a mounted file system.  path is the path name of any file within the mounted file system.
     buf is a pointer to a statvfs structure defined in statvfs(5).

     fstatvfs() and fstatvfs1() return the same information about an open file referenced by descriptor fd.

     The statvfs1() and fstatvfs1() functions allow an extra flags argument which can be ST_WAIT and ST_NOWAIT.  When ST_NOWAIT is specified, then
     only cached statistics are returned.  This can result in significant savings on non-local filesystems, where gathering statistics involves a
     network communication.

     The statvfs() and fstatvfs() calls are equivalent to the respective statvfs1() and fstatvfs1() calls with ST_WAIT specified as the flags
     argument.

RETURN VALUES

     Upon successful completion, a value of 0 is returned.  Otherwise, -1 is returned and the global variable errno is set to indicate the error.

ERRORS

     statvfs() and statvfs1() fail if one or more of the following are true:

     [ENOTDIR]		A component of the path prefix of path is not a directory.

     [ENAMETOOLONG]	The length of a component of path exceeds {NAME_MAX} characters, or the length of path exceeds {PATH_MAX} characters.

     [ENOENT]		The file referred to by path does not exist.

     [EACCES]		Search permission is denied for a component of the path prefix of path.

     [ELOOP]		Too many symbolic links were encountered in translating path.

     [EFAULT]		buf or path points to an invalid address.

     [EIO]		An I/O error occurred while reading from or writing to the file system.

     fstatvfs() and fstatvfs1() fail if one or more of the following are true:

     [EBADF]		fd is not a valid open file descriptor.

     [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(5)

HISTORY

     The statvfs(), statvfs1(), fstatvfs(), and fstatvfs1() functions first appeared in NetBSD 3.0 to replace the statfs() family of functions
     which first appeared in 4.4BSD.

BSD
								  April 14, 2004							       BSD