ufs_disk_close(3)

NAME

ufs_disk_close, ufs_disk_fillout, ufs_disk_fillout_blank,

ufs_disk_write
- open and close userland UFS disks

LIBRARY

library ``libufs''

SYNOPSIS

#include <sys/param.h>
#include <sys/mount.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>
#include <libufs.h>
int
ufs_disk_close(struct uufsd *disk);
int
ufs_disk_fillout(struct uufsd *disk, const char *name);
int
ufs_disk_fillout_blank(struct   uufsd   *disk,   const  char
*name);
int
ufs_disk_write(struct uufsd *disk);

DESCRIPTION

The ufs_disk_close() function closes a disk and frees inter

nal memory
related to it. It does not free the disk structure.

The ufs_disk_fillout() and ufs_disk_fillout_blank() func

tions open a disk
specified by name and populate the structure pointed to by

disk. The
disk is opened read-only. The specified name may be either

a mountpoint,
or a device name. The ufs_disk_fillout() function assumes

there is a
valid superblock and will fail if not, whereas the
ufs_disk_fillout_blank() function makes no assumptions of

that sort.

The ufs_disk_write() function attempts to re-open a disk as

writable if
it is not currently.

ERRORS

The function ufs_disk_close() has no failure points.

The function ufs_disk_fillout() may fail for any of the rea

sons
ufs_disk_fillout_blank() might, as well as for any reason

sbread(3)
might.

The ufs_disk_fillout_blank() may fail and set errno for any

of the errors
specified for the library functions open(2), strdup(3). Ad

ditionally, it
may follow the libufs(3) error methodologies in situations

where no
device could be found to open.

The function ufs_disk_write() may fail and set errno for any

of the
errors specified for the library functions open(2) and

stat(2). Namely,
it will fail if the disk in question may not be written to.

SEE ALSO

open(2), getfsfile(3), libufs(3), sbread(3)

HISTORY

These functions first appeared as part of libufs(3) in

FreeBSD 5.0.

AUTHORS

Juli Mallett <jmallett@FreeBSD.org>

BSD June 4, 2003

BSD