--- /dev/null
+.\" $NetBSD: statvfs.2,v 1.4 2005/11/04 06:09:20 gendalia Exp $
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+.\" @(#)statfs.2 8.5 (Berkeley) 5/24/95
+.\"
+.Dd April 14, 2004
+.Dt STATVFS 2
+.Os
+.Sh NAME
+.Nm statvfs ,
+.Nm fstatvfs ,
+.Nd get file system statistics
+.Sh LIBRARY
+.Lb libc
+.Sh SYNOPSIS
+.In sys/statvfs.h
+.Ft int
+.Fn statvfs "const char *path" "struct statvfs *buf"
+.Ft int
+.Fn fstatvfs "int fd" "struct statvfs *buf"
+.Sh DESCRIPTION
+.Fn statvfs
+returns information about a mounted file system.
+.Fa path
+is the path name of any file within the mounted file system.
+.Fa buf
+is a pointer to a
+.Nm statvfs
+structure defined in
+.Xr statvfs 5 .
+.Pp
+.Fn fstatvfs
+returns the same information about an open file referenced by descriptor
+.Fa fd .
+.Pp
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.
+Otherwise, \-1 is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn statvfs
+fails if one or more of the following are true:
+.Bl -tag -width Er
+.It Bq Er ENOTDIR
+A component of the path prefix of
+.Fa path
+is not a directory.
+.It Bq Er ENAMETOOLONG
+The length of a component of
+.Fa path
+exceeds
+.Dv NAME_MAX
+characters, or the length of
+.Fa path
+exceeds
+.Dv PATH_MAX
+characters.
+.It Bq Er ENOENT
+The file referred to by
+.Fa path
+does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix of
+.Fa path .
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating
+.Fa path .
+.It Bq Er EFAULT
+.Fa buf
+or
+.Fa path
+points to an invalid address.
+.It Bq Er EIO
+An
+.Tn I/O
+error occurred while reading from or writing to the file system.
+.El
+.Pp
+.Fn fstatvfs
+fails if one or more of the following are true:
+.Bl -tag -width Er
+.It Bq Er EBADF
+.Fa fd
+is not a valid open file descriptor.
+.It Bq Er EFAULT
+.Fa buf
+points to an invalid address.
+.It Bq Er EIO
+An
+.Tn I/O
+error occurred while reading from or writing to the file system.
+.El
+.Sh SEE ALSO
+.Xr statvfs 5
+.Sh HISTORY
+The
+.Fn statvfs ,
+and
+.Fn fstatvfs ,
+functions first appeared in
+.Nx 3.0
+to replace
+the
+.Fn statfs
+family of functions which first appeared in
+.Bx 4.4 .