shaba/systemd-stable
1
1
Fork 0
mirror of https://github.com/systemd/systemd-stable.git synced 2024-12-24 21:34:08 +03:00
Code

vol_id: README update

Browse Source
This commit is contained in:
Kay Sievers 2007-05-04 17:16:08 +02:00
parent a6abdbfc7e
commit 68d5578852
2 changed files with 17 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
extras/volume_id/README
View File

@ -4,18 +4,21 @@ This program is normally called from a udev rule, to provide udev with the
filesystem type of a volume and the label and uuid to name a device node. filesystem type of a volume and the label and uuid to name a device node.
vol_id opens the blockdevice node specified at the commandline. The following vol_id opens the blockdevice node specified at the commandline. The following
commandline switches are supported to specify what vol_id should print: commandline switches are supported to specify what vol_id should print:
--export export key/value pairs
--export prints all values --type filesystem type
-h prints help text --label filesystem label
-l prints the label of the volume --label-raw raw label
-u prints the uuid of the volume --uuid filesystem uuid
--skip-raid don't probe for raid
--probe-all find possibly conflicting signatures
--help
vol_id will only return successful if the string asked for, is not vol_id will only return successful if the string asked for, is not
empty. All trailing whitespace will be removed, spaces replaced by underscore empty. All trailing whitespace will be removed, spaces replaced by underscore
and slashes ignored. and slashes ignored.
fstype probe label uuid fsversion fstype probe label uuid version
---------------------------------------------------- --------------------------------------------------
linux swap * * * * linux swap * * * *
ext * * * * ext * * * *
reiserfs jr/3.5/3.6/4 * * * * reiserfs jr/3.5/3.6/4 * * * *
@ -41,9 +44,10 @@ gfs, gfs2 * - - -
Raid members are detected to prevent the probing for a filesystem Raid members are detected to prevent the probing for a filesystem
----------------------------------------------------------------- -----------------------------------------------------------------
linux raid * - * * linux raid (md) * * * *
LVM 1 * - - - LVM 1 * - - -
LVM 2 * - - * LVM 2 * - - *
ddf * - * *
highpoint * - - - highpoint * - - -
isw_raid * - - - isw_raid * - - -
lsi_raid * - - - lsi_raid * - - -
@ -54,9 +58,6 @@ via_raid * - - -
jmicron * - - - jmicron * - - -
adaptec * - - - adaptec * - - -
If no label is found vol_id exits with nonzero and the rule will be
ignored.
To give it a try, you may call it on the commandline: To give it a try, you may call it on the commandline:
$ extras/volume_id/vol_id --export /dev/sda6 $ extras/volume_id/vol_id --export /dev/sda6
ID_FS_USAGE=filesystem ID_FS_USAGE=filesystem
@ -66,10 +67,10 @@ To give it a try, you may call it on the commandline:
ID_FS_LABEL=devel ID_FS_LABEL=devel
ID_FS_LABEL_SAFE=devel ID_FS_LABEL_SAFE=devel
$ extras/volume_id/vol_id -l /dev/sda6 $ extras/volume_id/vol_id --label /dev/sda6
devel devel
$ extras/volume_id/vol_id -t /dev/sda6 $ extras/volume_id/vol_id --type /dev/sda6
ext3 ext3

4
extras/volume_id/lib/ddf_raid.c
View File

@ -1,7 +1,7 @@
/* /*
* volume_id - reads filesystem label and uuid * volume_id - reads filesystem label and uuid
* *
* Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> * Copyright (C) 2007 Kay Sievers <kay.sievers@vrfy.org>
* *
* This program is free software; you can redistribute it and/or modify it * This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the * under the terms of the GNU General Public License as published by the
@ -27,6 +27,8 @@
#include "libvolume_id.h" #include "libvolume_id.h"
#include "util.h" #include "util.h"
/* http://www.snia.org/standards/home */
#define DDF_HEADER 0xDE11DE11 #define DDF_HEADER 0xDE11DE11
#define DDF_GUID_LENGTH 24 #define DDF_GUID_LENGTH 24
#define DDF_REV_LENGTH 8 #define DDF_REV_LENGTH 8