sbread , sbwrite
- read and write superblocks of a UFS file system
LIBRARY
Lb 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
sbread (struct uufsd *disk); int
sbwrite (struct uufsd *disk int all);
DESCRIPTION
The
sbread ();
and
sbwrite ();
functions provide superblock reads and writes for
libufs(3)
consumers.
The
sbread ();
and
sbwrite ();
functions operate on the superblock field,
d_sb
associated with a given userland UFS disk structure.
Additionally, the
sbwrite ();
function will write to all superblock locations if the
Fa all
value is non-zero.
RETURN VALUES
Rv -std sbread sbwrite
ERRORS
The function
sbread ();
may fail and set
errno
for any of the errors specified for the library function
bread(3).
Additionally, it may follow the
libufs(3)
error methodologies in situations where no usable superblock could be
found.
The function
sbwrite ();
may fail and set
errno
for any of the errors specified for the library function
bwrite(3).
