WebSVN – livecd – Diff – /trunk/linux-live.sl/initrd/linuxrc


#!/bin/ash
#
# Original version from http://www.linux-live.org/
#
# modified by Urs Beyerle, PSI
# - to allow LiveCD mounted over NFS
# - add support for LiveCD on SATA devices
# - to allow LiveCD mounted over CIFS
 
export PATH=.:/:/usr/sbin:/usr/bin:/sbin:/bin
. liblinuxlive
 
 
echolog "mounting /proc and /sys filesystems"
mount -t proc proc /proc
mount -t sysfs sysfs /sys
ln -sf /proc/mounts /etc/mtab # this allows us to use umount -a
 
# setup DEBUGCMD variable. If debug boot option is present, call debug()
# function several times during script's execution
if [ "`cmdline_parameter debug`" ]; then DEBUGCMD="debug"; else DEBUGCMD=""; fi
 
$DEBUGCMD
 
# amount of RAM to store changes
RAMSIZE="`cmdline_value ramsize`"
if [ "$RAMSIZE" = "" ]; then RAMSIZE="70%"; fi
 
# I have to set these variables very carefully
UNION=/union
MEMORY=/memory
MOUNTDIR=livecd
CHANGES=$MEMORY/changes
COPY2RAM=$MEMORY/copy2ram
IMAGES=$MEMORY/images
INITRAMDISK=$MOUNTDIR/live
 
# set NFSROOT if nfsroot= in boot parameter 
NFSROOT="`cmdline_value nfsroot`"
NFS_OPTS="`cmdline_value nfs_opts`"
 
# cifs boot parameters
CIFSROOT="`cmdline_value cifsroot`"
CIFS_OPTS="`cmdline_value cifs_opts`"
 
# we need cdrom support, isofs support, unionfs/aufs support, etc
modprobe_essential_modules
 
# disable DMA if nodma parameter is used
setup_dma
 
$DEBUGCMD
 
# if NFSROOT is set:
echolog "check for nfsroot or cifsroot"
if [ "$NFSROOT" != "" ]; then
 
 
   echolog "nfsroot: $NFSROOT"
   $DEBUGCMD
 
   # load network modules, if NFSROOT is set
   echolog "load network modules"
   load_network_modules
   $DEBUGCMD
 
   # get DHCP lease
   get_dhcp_lease
 
   $DEBUGCMD
 
    # we need nfs modules loaded, if NFSROOT is set
    modprobe_nfs_modules
 
# if CIFSROOT is set
elif [ "$CIFSROOT" != "" ]; then
 
   echolog "cifsroot: $CIFSROOT"
   $DEBUGCMD
 
   # load network modules, if CIFSROOT is set
   echolog "load network modules"
   load_network_modules
   $DEBUGCMD
 
   # get DHCP lease
   get_dhcp_lease
   $DEBUGCMD
 
    # we need cifs modules loaded, if CIFSROOT is set
    modprobe_cifs_modules
 
fi
 
$DEBUGCMD
 
# $UNION will be used as a root directory, livecd modules will be added soon.
echolog "setup union on $UNION"
mkdir -p $UNION
mkdir -p $MEMORY
 
CHANGESDEV="`cmdline_value changes`"
if [ "$CHANGESDEV" != "" ]; then
   echo "mounting $CHANGESDEV to $MEMORY"
   mount_device $CHANGESDEV $MEMORY
else false; fi
 
# mount tmpfs only in the case when changes= boot parameter was empty
# or we were not able to mount the storage device
if [ $? -ne 0 ]; then mount -t tmpfs -o "size=$RAMSIZE" tmpfs $MEMORY; fi
 
mkdir -p $CHANGES
mkdir -p $COPY2RAM
mkdir -p $IMAGES
 
# mount unionfs or aufs
lsmod | grep -q ^unionfs
if [ $? -eq 0 ]; then  
    mount -t unionfs -o dirs=$CHANGES=rw unionfs $UNION
    if [ $? -ne 0 ]; then fatal "can't setup union in $UNION directory"; fi
    echolog "unionfs mounted"
else
    mount -t aufs -o br:$CHANGES=rw aufs $UNION
    if [ $? -ne 0 ]; then fatal "can't setup union (aufs) in $UNION directory"; fi
    echolog "aufs mounted"
fi
 
$DEBUGCMD
 
# try to find livecd data directory. If not found, try modprobing
# USB and SATA kernel modules and repeat the find procedure again
echolog "looking for data modules"
DATA="`find_live_data_dir $MOUNTDIR`";
if [ "$DATA" = "" ]; then modprobe_usb_sata_modules; DATA="`find_live_data_dir $MOUNTDIR`"; fi
if [ "$DATA" = "" ]; then fatal "Data for LiveCD not found."; fi
echolog "LiveCD found in: $DATA"
 
$DEBUGCMD
 
# If toram or copy2ram boot parameter is present, copy all .mo modules to RAM.
# (skip modules from /optional/ which are not listed in load= boot option)
# Finaly modify DATA variable so it will point to correct directory
if [ "`cmdline_parameter toram`" != "" -o "`cmdline_parameter copy2ram`" != "" ]; then
   echolog "copying modules to RAM, this may take some time"
   copy_to_ram $DATA $COPY2RAM
   cd_autoeject 1
   umount $DATA 2>/dev/null
   if [ $? -ne 0 ]; then umount `dirname $DATA` 2>/dev/null; fi
   DATA=$COPY2RAM
   cd_autoeject 0
fi
 
mkdir -p $UNION/boot
mount -o bind $DATA $UNION/boot
 
$DEBUGCMD
 
# DATA contains path to the base directory of all .mo images which need
# to be mounted and inserted into live filesystem. Do it now.
echolog "inserting all modules and creating live filesystem"
union_insert_modules $UNION $DATA $IMAGES
 
$DEBUGCMD
 
echo "copying rootchanges"
copy_rootchanges $DATA $UNION
 
$DEBUGCMD
 
echo "creating /etc/fstab"
activate_fstab $UNION
 
# More likely these directories aren't there.
# Even if they are, this won't hurt.
mkdir -p $UNION/proc
mkdir -p $UNION/sys
mkdir -p $UNION/tmp
chmod 1777 $UNION/tmp
mkdir -p $UNION/dev
mkdir -p $UNION/initrd
 
$DEBUGCMD
 
# no X? (set runlevel to 3)
if [ "`cmdline_parameter nox`" ]; then
  echo "set runlevel to 3"
  sed -i "s/id:.:initdefault:/id:3:initdefault:/" $UNION/etc/inittab
fi
 
$DEBUGCMD
 
# Union contains all the files and directories unioned from all modules.
# Change root directory to it, and move initrd's root to /livecd/live/initramdisk
# Finaly execute /sbin/init to start the distribution.
echolog "changing root directory..."
cd $UNION
mkdir -p $INITRAMDISK
 
umount /sys # we won't need it anymore
 
# if [ ! -e $UNION/dev/console ]; then mknod $UNION/dev/console c 5 1; fi
 
# Copy all dev files (found by mdev) to unioned dev directory
# so at least disk devices exist (your Linux may need them).
# Two exceptions, do not copy pty* and tty* devs.
if [ ! -e /dev/console ]; then mknod /dev/console c 5 1; fi
cp -fdR /dev . 2>/dev/null
 
if [ -x $UNION/usr/sbin/chroot ];
  then CHROOT=/usr/sbin/chroot
  else CHROOT=/usr/bin/chroot
fi
 
echolog "End of linux live scripts"
 
# pure magic ;-)
cat $UNION/bin/true >/dev/null
 
$DEBUGCMD
 
pivot_root . $INITRAMDISK
exec $CHROOT . sbin/init <dev/console >dev/console 2>&1
 
header "ERROR!"
echolog "You are not supposed to be here, something went wrong!"
echolog "Even Ctrl+Alt+Del won't help you in kernel panic."
 

Rev 150	Rev 160
1	`#!/bin/ash`	1	`#!/bin/ash`
2	`#`	2	`#`
3	`# Original version from http://www.linux-live.org/`	3	`# Original version from http://www.linux-live.org/`
4	`#`	4	`#`
5	`# modified by Urs Beyerle, PSI`	5	`# modified by Urs Beyerle, PSI`
6	`# - to allow LiveCD mounted over NFS`	6	`# - to allow LiveCD mounted over NFS`
7	`# - add support for LiveCD on SATA devices`	7	`# - add support for LiveCD on SATA devices`
-		8	`# - to allow LiveCD mounted over CIFS`
8		9
9	`export PATH=.:/:/usr/sbin:/usr/bin:/sbin:/bin`	10	`export PATH=.:/:/usr/sbin:/usr/bin:/sbin:/bin`
10	`. liblinuxlive`	11	`. liblinuxlive`
11		12
12		13
13	`echolog "mounting /proc and /sys filesystems"`	14	`echolog "mounting /proc and /sys filesystems"`
14	`mount -t proc proc /proc`	15	`mount -t proc proc /proc`
15	`mount -t sysfs sysfs /sys`	16	`mount -t sysfs sysfs /sys`
16	`ln -sf /proc/mounts /etc/mtab # this allows us to use umount -a`	17	`ln -sf /proc/mounts /etc/mtab # this allows us to use umount -a`
17		18
18	`# setup DEBUGCMD variable. If debug boot option is present, call debug()`	19	`# setup DEBUGCMD variable. If debug boot option is present, call debug()`
19	`# function several times during script's execution`	20	`# function several times during script's execution`
20	if [ "`cmdline_parameter debug`" ]; then DEBUGCMD="debug"; else DEBUGCMD=""; fi	21	if [ "`cmdline_parameter debug`" ]; then DEBUGCMD="debug"; else DEBUGCMD=""; fi
21		22
22	`$DEBUGCMD`	23	`$DEBUGCMD`
23		24
24	`# amount of RAM to store changes`	25	`# amount of RAM to store changes`
25	RAMSIZE="`cmdline_value ramsize`"	26	RAMSIZE="`cmdline_value ramsize`"
26	`if [ "$RAMSIZE" = "" ]; then RAMSIZE="70%"; fi`	27	`if [ "$RAMSIZE" = "" ]; then RAMSIZE="70%"; fi`
27		28
28	`# I have to set these variables very carefully`	29	`# I have to set these variables very carefully`
29	`UNION=/union`	30	`UNION=/union`
30	`MEMORY=/memory`	31	`MEMORY=/memory`
31	`MOUNTDIR=livecd`	32	`MOUNTDIR=livecd`
32	`CHANGES=$MEMORY/changes`	33	`CHANGES=$MEMORY/changes`
33	`COPY2RAM=$MEMORY/copy2ram`	34	`COPY2RAM=$MEMORY/copy2ram`
34	`IMAGES=$MEMORY/images`	35	`IMAGES=$MEMORY/images`
35	`INITRAMDISK=$MOUNTDIR/live`	36	`INITRAMDISK=$MOUNTDIR/live`
36		37
37	`# set NFSROOT if nfsroot= in boot parameter`	38	`# set NFSROOT if nfsroot= in boot parameter`
38	NFSROOT="`cmdline_value nfsroot`"	39	NFSROOT="`cmdline_value nfsroot`"
-		40	NFS_OPTS="`cmdline_value nfs_opts`"
-		41
-		42	`# cifs boot parameters`
-		43	CIFSROOT="`cmdline_value cifsroot`"
-		44	CIFS_OPTS="`cmdline_value cifs_opts`"
39		45
40	`# we need cdrom support, isofs support, unionfs/aufs support, etc`	46	`# we need cdrom support, isofs support, unionfs/aufs support, etc`
41	`modprobe_essential_modules`	47	`modprobe_essential_modules`
42		48
43	`# disable DMA if nodma parameter is used`	49	`# disable DMA if nodma parameter is used`
44	`setup_dma`	50	`setup_dma`
45		51
46	`$DEBUGCMD`	52	`$DEBUGCMD`
47		53
48	`# if NFSROOT is set:`	54	`# if NFSROOT is set:`
49	`echolog "check for nfsroot"`	55	`echolog "check for nfsroot or cifsroot"`
50	`if [ "$NFSROOT" != "" ]; then`	56	`if [ "$NFSROOT" != "" ]; then`
51		57
52	`# load network modules, if NFSROOT is set`	-
53	`echolog "nfsroot: $NFSROOT"`	58	`echolog "nfsroot: $NFSROOT"`
54	`load_network_modules`	59	`$DEBUGCMD`
55		60
-		61	`# load network modules, if NFSROOT is set`
-		62	`echolog "load network modules"`
-		63	`load_network_modules`
56	`$DEBUGCMD`	64	`$DEBUGCMD`
57		65
58	`# get DHCP lease`	66	`# get DHCP lease`
59	`get_dhcp_lease`	67	`get_dhcp_lease`
60		-
61	`$DEBUGCMD`	68	`$DEBUGCMD`
62		69
63	`# we need nfs modules loaded, if NFSROOT is set`	70	`# we need nfs modules loaded, if NFSROOT is set`
64	`modprobe_nfs_modules`	71	`modprobe_nfs_modules`
65		72
-		73	`# if CIFSROOT is set`
-		74	`elif [ "$CIFSROOT" != "" ]; then`
-		75
-		76	`echolog "cifsroot: $CIFSROOT"`
-		77	`$DEBUGCMD`
-		78
-		79	`# load network modules, if CIFSROOT is set`
-		80	`echolog "load network modules"`
-		81	`load_network_modules`
-		82	`$DEBUGCMD`
-		83
-		84	`# get DHCP lease`
-		85	`get_dhcp_lease`
-		86	`$DEBUGCMD`
-		87
-		88	`# we need cifs modules loaded, if CIFSROOT is set`
-		89	`modprobe_cifs_modules`
-		90
66	`fi`	91	`fi`
67		92
68	`$DEBUGCMD`	93	`$DEBUGCMD`
69		94
70	`# $UNION will be used as a root directory, livecd modules will be added soon.`	95	`# $UNION will be used as a root directory, livecd modules will be added soon.`
71	`echolog "setup union on $UNION"`	96	`echolog "setup union on $UNION"`
72	`mkdir -p $UNION`	97	`mkdir -p $UNION`
73	`mkdir -p $MEMORY`	98	`mkdir -p $MEMORY`
74		99
75	CHANGESDEV="`cmdline_value changes`"	100	CHANGESDEV="`cmdline_value changes`"
76	`if [ "$CHANGESDEV" != "" ]; then`	101	`if [ "$CHANGESDEV" != "" ]; then`
77	`echo "mounting $CHANGESDEV to $MEMORY"`	102	`echo "mounting $CHANGESDEV to $MEMORY"`
78	`mount_device $CHANGESDEV $MEMORY`	103	`mount_device $CHANGESDEV $MEMORY`
79	`else false; fi`	104	`else false; fi`
80		105
81	`# mount tmpfs only in the case when changes= boot parameter was empty`	106	`# mount tmpfs only in the case when changes= boot parameter was empty`
82	`# or we were not able to mount the storage device`	107	`# or we were not able to mount the storage device`
83	`if [ $? -ne 0 ]; then mount -t tmpfs -o "size=$RAMSIZE" tmpfs $MEMORY; fi`	108	`if [ $? -ne 0 ]; then mount -t tmpfs -o "size=$RAMSIZE" tmpfs $MEMORY; fi`
84		109
85	`mkdir -p $CHANGES`	110	`mkdir -p $CHANGES`
86	`mkdir -p $COPY2RAM`	111	`mkdir -p $COPY2RAM`
87	`mkdir -p $IMAGES`	112	`mkdir -p $IMAGES`
88		113
89	`# mount unionfs or aufs`	114	`# mount unionfs or aufs`
90	`lsmod \| grep -q ^unionfs`	115	`lsmod \| grep -q ^unionfs`
91	`if [ $? -eq 0 ]; then`	116	`if [ $? -eq 0 ]; then`
92	`mount -t unionfs -o dirs=$CHANGES=rw unionfs $UNION`	117	`mount -t unionfs -o dirs=$CHANGES=rw unionfs $UNION`
93	`if [ $? -ne 0 ]; then fatal "can't setup union in $UNION directory"; fi`	118	`if [ $? -ne 0 ]; then fatal "can't setup union in $UNION directory"; fi`
94	`echolog "unionfs mounted"`	119	`echolog "unionfs mounted"`
95	`else`	120	`else`
96	`mount -t aufs -o br:$CHANGES=rw aufs $UNION`	121	`mount -t aufs -o br:$CHANGES=rw aufs $UNION`
97	`if [ $? -ne 0 ]; then fatal "can't setup union (aufs) in $UNION directory"; fi`	122	`if [ $? -ne 0 ]; then fatal "can't setup union (aufs) in $UNION directory"; fi`
98	`echolog "aufs mounted"`	123	`echolog "aufs mounted"`
99	`fi`	124	`fi`
100		125
101	`$DEBUGCMD`	126	`$DEBUGCMD`
102		127
103	`# try to find livecd data directory. If not found, try modprobing`	128	`# try to find livecd data directory. If not found, try modprobing`
104	`# USB and SATA kernel modules and repeat the find procedure again`	129	`# USB and SATA kernel modules and repeat the find procedure again`
105	`echolog "looking for data modules"`	130	`echolog "looking for data modules"`
106	DATA="`find_live_data_dir $MOUNTDIR`";	131	DATA="`find_live_data_dir $MOUNTDIR`";
107	if [ "$DATA" = "" ]; then modprobe_usb_sata_modules; DATA="`find_live_data_dir $MOUNTDIR`"; fi	132	if [ "$DATA" = "" ]; then modprobe_usb_sata_modules; DATA="`find_live_data_dir $MOUNTDIR`"; fi
108	`if [ "$DATA" = "" ]; then fatal "Data for LiveCD not found."; fi`	133	`if [ "$DATA" = "" ]; then fatal "Data for LiveCD not found."; fi`
109	`echolog "LiveCD found in: $DATA"`	134	`echolog "LiveCD found in: $DATA"`
110		135
111	`$DEBUGCMD`	136	`$DEBUGCMD`
112		137
113	`# If toram or copy2ram boot parameter is present, copy all .mo modules to RAM.`	138	`# If toram or copy2ram boot parameter is present, copy all .mo modules to RAM.`
114	`# (skip modules from /optional/ which are not listed in load= boot option)`	139	`# (skip modules from /optional/ which are not listed in load= boot option)`
115	`# Finaly modify DATA variable so it will point to correct directory`	140	`# Finaly modify DATA variable so it will point to correct directory`
116	if [ "`cmdline_parameter toram`" != "" -o "`cmdline_parameter copy2ram`" != "" ]; then	141	if [ "`cmdline_parameter toram`" != "" -o "`cmdline_parameter copy2ram`" != "" ]; then
117	`echolog "copying modules to RAM, this may take some time"`	142	`echolog "copying modules to RAM, this may take some time"`
118	`copy_to_ram $DATA $COPY2RAM`	143	`copy_to_ram $DATA $COPY2RAM`
119	`cd_autoeject 1`	144	`cd_autoeject 1`
120	`umount $DATA 2>/dev/null`	145	`umount $DATA 2>/dev/null`
121	if [ $? -ne 0 ]; then umount `dirname $DATA` 2>/dev/null; fi	146	if [ $? -ne 0 ]; then umount `dirname $DATA` 2>/dev/null; fi
122	`DATA=$COPY2RAM`	147	`DATA=$COPY2RAM`
123	`cd_autoeject 0`	148	`cd_autoeject 0`
124	`fi`	149	`fi`
125		150
126	`mkdir -p $UNION/boot`	151	`mkdir -p $UNION/boot`
127	`mount -o bind $DATA $UNION/boot`	152	`mount -o bind $DATA $UNION/boot`
128		153
129	`$DEBUGCMD`	154	`$DEBUGCMD`
130		155
131	`# DATA contains path to the base directory of all .mo images which need`	156	`# DATA contains path to the base directory of all .mo images which need`
132	`# to be mounted and inserted into live filesystem. Do it now.`	157	`# to be mounted and inserted into live filesystem. Do it now.`
133	`echolog "inserting all modules and creating live filesystem"`	158	`echolog "inserting all modules and creating live filesystem"`
134	`union_insert_modules $UNION $DATA $IMAGES`	159	`union_insert_modules $UNION $DATA $IMAGES`
135		160
136	`$DEBUGCMD`	161	`$DEBUGCMD`
137		162
138	`echo "copying rootchanges"`	163	`echo "copying rootchanges"`
139	`copy_rootchanges $DATA $UNION`	164	`copy_rootchanges $DATA $UNION`
140		165
141	`$DEBUGCMD`	166	`$DEBUGCMD`
142		167
143	`echo "creating /etc/fstab"`	168	`echo "creating /etc/fstab"`
144	`activate_fstab $UNION`	169	`activate_fstab $UNION`
145		170
146	`# More likely these directories aren't there.`	171	`# More likely these directories aren't there.`
147	`# Even if they are, this won't hurt.`	172	`# Even if they are, this won't hurt.`
148	`mkdir -p $UNION/proc`	173	`mkdir -p $UNION/proc`
149	`mkdir -p $UNION/sys`	174	`mkdir -p $UNION/sys`
150	`mkdir -p $UNION/tmp`	175	`mkdir -p $UNION/tmp`
151	`chmod 1777 $UNION/tmp`	176	`chmod 1777 $UNION/tmp`
152	`mkdir -p $UNION/dev`	177	`mkdir -p $UNION/dev`
153	`mkdir -p $UNION/initrd`	178	`mkdir -p $UNION/initrd`
154		179
155	`$DEBUGCMD`	180	`$DEBUGCMD`
156		181
157	`# no X? (set runlevel to 3)`	182	`# no X? (set runlevel to 3)`
158	if [ "`cmdline_parameter nox`" ]; then	183	if [ "`cmdline_parameter nox`" ]; then
159	`echo "set runlevel to 3"`	184	`echo "set runlevel to 3"`
160	`sed -i "s/id:.:initdefault:/id:3:initdefault:/" $UNION/etc/inittab`	185	`sed -i "s/id:.:initdefault:/id:3:initdefault:/" $UNION/etc/inittab`
161	`fi`	186	`fi`
162		187
163	`$DEBUGCMD`	188	`$DEBUGCMD`
164		189
165	`# Union contains all the files and directories unioned from all modules.`	190	`# Union contains all the files and directories unioned from all modules.`
166	`# Change root directory to it, and move initrd's root to /livecd/live/initramdisk`	191	`# Change root directory to it, and move initrd's root to /livecd/live/initramdisk`
167	`# Finaly execute /sbin/init to start the distribution.`	192	`# Finaly execute /sbin/init to start the distribution.`
168	`echolog "changing root directory..."`	193	`echolog "changing root directory..."`
169	`cd $UNION`	194	`cd $UNION`
170	`mkdir -p $INITRAMDISK`	195	`mkdir -p $INITRAMDISK`
171		196
172	`umount /sys # we won't need it anymore`	197	`umount /sys # we won't need it anymore`
-		198
173	`if [ ! -e $UNION/dev/console ]; then mknod $UNION/dev/console c 5 1; fi`	199	`# if [ ! -e $UNION/dev/console ]; then mknod $UNION/dev/console c 5 1; fi`
-		200
-		201	`# Copy all dev files (found by mdev) to unioned dev directory`
-		202	`# so at least disk devices exist (your Linux may need them).`
-		203	`# Two exceptions, do not copy pty* and tty* devs.`
-		204	`if [ ! -e /dev/console ]; then mknod /dev/console c 5 1; fi`
-		205	`cp -fdR /dev . 2>/dev/null`
174		206
175	`if [ -x $UNION/usr/sbin/chroot ];`	207	`if [ -x $UNION/usr/sbin/chroot ];`
176	`then CHROOT=/usr/sbin/chroot`	208	`then CHROOT=/usr/sbin/chroot`
177	`else CHROOT=/usr/bin/chroot`	209	`else CHROOT=/usr/bin/chroot`
178	`fi`	210	`fi`
179		211
180	`echolog "End of linux live scripts"`	212	`echolog "End of linux live scripts"`
181		213
182	`# pure magic ;-)`	214	`# pure magic ;-)`
183	`cat $UNION/bin/true >/dev/null`	215	`cat $UNION/bin/true >/dev/null`
184		216
185	`$DEBUGCMD`	217	`$DEBUGCMD`
186		218
187	`pivot_root . $INITRAMDISK`	219	`pivot_root . $INITRAMDISK`
188	`exec $CHROOT . sbin/init <dev/console >dev/console 2>&1`	220	`exec $CHROOT . sbin/init <dev/console >dev/console 2>&1`
189		221
190	`header "ERROR!"`	222	`header "ERROR!"`
191	`echolog "You are not supposed to be here, something went wrong!"`	223	`echolog "You are not supposed to be here, something went wrong!"`
192	`echolog "Even Ctrl+Alt+Del won't help you in kernel panic."`	224	`echolog "Even Ctrl+Alt+Del won't help you in kernel panic."`
193		225

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