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  man pages->FreeBSD man pages -> ufs_disk_write (3)              



NAME    [Toc]    [Back]

     ufs_disk_close, ufs_disk_fillout, ufs_disk_fillout_blank, ufs_disk_write
     -- open and close userland UFS disks

LIBRARY    [Toc]    [Back]

     UFS File System Access Library (libufs, -lufs)

SYNOPSIS    [Toc]    [Back]

     #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>

     ufs_disk_close(struct uufsd *disk);

     ufs_disk_fillout(struct uufsd *disk, const char *name);

     ufs_disk_fillout_blank(struct uufsd *disk, const char *name);

     ufs_disk_write(struct uufsd *disk);

DESCRIPTION    [Toc]    [Back]

     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,
     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    [Toc]    [Back]

     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)

     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(3) and stat(3).  Namely,
     it will fail if the disk in question may not be written to.

SEE ALSO    [Toc]    [Back]

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

HISTORY    [Toc]    [Back]

     These functions first appeared as part of libufs(3) in FreeBSD 5.0.

AUTHORS    [Toc]    [Back]

     Juli Mallett <jmallett@FreeBSD.org>

FreeBSD 5.2.1			 June 04, 2003			 FreeBSD 5.2.1
[ Back ]
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