UFS_DISK_CLOSE(3) FreeBSD Library Functions Manual 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
UFS File System Access Library (libufs, -lufs)
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 internal memory
related to it. It does not free the disk structure.
The ufs_disk_fillout() and ufs_disk_fillout_blank() functions 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,
a device name or a filesystem image. 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 reasons
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). Additionally, 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 <
[email protected]>
FreeBSD 14.1-RELEASE-p8 June 4, 2003 FreeBSD 14.1-RELEASE-p8