Annotation of /tags/mkinitrd-6_3_3/livecd/linuxrc.sh
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Wed Dec 15 21:43:57 2010 UTC (13 years, 9 months ago) by niro
File MIME type: application/x-sh
File size: 4896 byte(s)
Wed Dec 15 21:43:57 2010 UTC (13 years, 9 months ago) by niro
File MIME type: application/x-sh
File size: 4896 byte(s)
tagged 'mkinitrd-6_3_3'
1 | niro | 532 | #!/bin/sh |
2 | niro | 809 | # $Id$ |
3 | niro | 532 | |
4 | # loads given kernel modules | ||
5 | load_kernel_modules() | ||
6 | { | ||
7 | local type="$1" | ||
8 | local module | ||
9 | local args | ||
10 | |||
11 | echo -e "-- Loading ${type} modules:" | ||
12 | ( cat /etc/modules.${type}; echo) | while read module args | ||
13 | do | ||
14 | case "${module}" in | ||
15 | \#*|"") continue ;; | ||
16 | esac | ||
17 | |||
18 | if [ -e /lib/${module}.ko ] | ||
19 | then | ||
20 | insmod -f /lib/${module}.ko ${args} > /dev/null 2>&1 | ||
21 | [ $? -eq 0 ] && echo -e "-- ${module}" | ||
22 | fi | ||
23 | done | ||
24 | echo | ||
25 | } | ||
26 | |||
27 | # check_drives $devices $fstype | ||
28 | check_drives() | ||
29 | { | ||
30 | local devices="$1" | ||
31 | local fs="$2" | ||
32 | |||
33 | for dev in ${devices} | ||
34 | do | ||
35 | mount -t ${fs} ${dev} /sysroot/mnt/cdrom >/dev/null 2>&1 | ||
36 | media_found=$? | ||
37 | |||
38 | # if mount was ok check if cdid exists | ||
39 | if [ "${media_found}" -eq 0 ] | ||
40 | then | ||
41 | [ -e /sysroot/mnt/cdrom/livecdrootfs.sqsh ] && media_id_ok=$? | ||
42 | umount /sysroot/mnt/cdrom | ||
43 | |||
44 | if [ "${media_id_ok}" -eq 0 ] | ||
45 | then | ||
46 | echo -e "Magellan boot device found." | ||
47 | BOOT_DEVICE="${dev}" | ||
48 | niro | 663 | FSTYPE="${fs}" |
49 | niro | 532 | break |
50 | fi | ||
51 | fi | ||
52 | done | ||
53 | } | ||
54 | |||
55 | ## some defaults ## | ||
56 | DOSCSI=no | ||
57 | DOUSB=no | ||
58 | niro | 894 | DOSATA=yes |
59 | niro | 663 | DOFB=no |
60 | niro | 894 | DOPATA=yes |
61 | niro | 663 | FORCED_ROOTFS="" |
62 | niro | 1180 | INITEXEC="/sbin/init" |
63 | niro | 532 | |
64 | ## starts here ## | ||
65 | |||
66 | # mount essential filesystems | ||
67 | mount -t proc proc /proc | ||
68 | mount -t sysfs sysfs /sys | ||
69 | niro | 894 | mount -t tmpfs tmpfs /dev -o rw,mode=0644,size=1024 |
70 | niro | 532 | |
71 | niro | 894 | # install all busybox applets |
72 | busybox --install -s | ||
73 | |||
74 | niro | 532 | # silencio |
75 | echo 0 > /proc/sys/kernel/printk | ||
76 | |||
77 | # check command line for params | ||
78 | for i in $(cat /proc/cmdline) | ||
79 | do | ||
80 | case "${i}" in | ||
81 | niro | 894 | doscsi) DOSCSI=yes;; |
82 | noscsi) DOSCSI=no;; | ||
83 | dousb) DOUSB=yes;; | ||
84 | nousb) DOUSB=no;; | ||
85 | dosata) DOSATA=yes ;; | ||
86 | nosata) DOSATA=no ;; | ||
87 | dofb) DOFB=yes;; | ||
88 | nofb) DOFB=no;; | ||
89 | dopata) DOPATA=yes;; | ||
90 | nopata) DOPATA=no;; | ||
91 | rootfs=*) FORCED_ROOTFS="${i#*=}";; | ||
92 | niro | 1180 | init=*) INITEXEC="${i#*=}";; |
93 | niro | 532 | esac |
94 | done | ||
95 | |||
96 | # now load all needed modules | ||
97 | niro | 671 | [ "${DOFB}" = "yes" ] && load_kernel_modules "framebuffer" |
98 | niro | 532 | load_kernel_modules "generic" |
99 | niro | 673 | [ "${DOPATA}" = "yes" ] && load_kernel_modules "pata" |
100 | niro | 532 | [ "${DOSCSI}" = "yes" ] && load_kernel_modules "scsi" |
101 | [ "${DOUSB}" = "yes" ] && load_kernel_modules "usb" | ||
102 | [ "${DOSATA}" = "yes" ] && load_kernel_modules "sata" | ||
103 | |||
104 | niro | 894 | # populate dev |
105 | mdev -s | ||
106 | # handle hotplug events properly | ||
107 | echo /sbin/mdev > /proc/sys/kernel/hotplug | ||
108 | |||
109 | niro | 532 | # create newroot mount point |
110 | mkdir -p /sysroot | ||
111 | # fake a new filesystem (also needed with an initramfs!!) | ||
112 | mount -t tmpfs tmpfs /sysroot | ||
113 | |||
114 | mkdir -p /sysroot/mnt/cdrom | ||
115 | mkdir -p /sysroot/mnt/cloop | ||
116 | mkdir -p /sysroot/mnt/magellan | ||
117 | |||
118 | |||
119 | # needed for the usbstick, the timeout maybe to short | ||
120 | if [ "${DOUSB}" = "yes" ]; then | ||
121 | echo "-- Waiting 8 seconds for possible usb mount ..." | ||
122 | sleep 8 | ||
123 | fi | ||
124 | |||
125 | # searching cdrom with cdid | ||
126 | BOOT_DEVICE="" | ||
127 | FSTYPE="" | ||
128 | |||
129 | echo "Searching for a boot device ..." | ||
130 | |||
131 | # searching usbstick | ||
132 | if [ "${DOUSB}" = "yes" ]; then | ||
133 | niro | 663 | ROOTFS="vfat" |
134 | niro | 706 | [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}" |
135 | niro | 663 | check_drives "/dev/sd*" "${ROOTFS}" |
136 | check_drives "/dev/sg*" "${ROOTFS}" | ||
137 | niro | 532 | fi |
138 | |||
139 | # for cdrom_device in $CDROM_LIST (ide) | ||
140 | niro | 663 | ROOTFS="iso9660" |
141 | niro | 706 | [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}" |
142 | niro | 663 | check_drives "/dev/cdroms/*" "${ROOTFS}" |
143 | check_drives "/dev/hd*" "${ROOTFS}" | ||
144 | niro | 532 | |
145 | # scsi cdroms | ||
146 | if [ "${DOSCSI}" = "yes" ] || [ "${DOSATA}" = "yes" ]; then | ||
147 | niro | 663 | ROOTFS="iso9660" |
148 | niro | 706 | [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}" |
149 | niro | 663 | check_drives "/dev/sr*" "${ROOTFS}" |
150 | check_drives "/dev/sg*" "${ROOTFS}" | ||
151 | check_drives "/dev/scd*" "${ROOTFS}" | ||
152 | niro | 532 | fi |
153 | |||
154 | # mount our rootfs from cdrom | ||
155 | if [ "${BOOT_DEVICE}" = "" ] | ||
156 | then | ||
157 | echo "No Magellan boot CD/USBStick found!!!" | ||
158 | ash | ||
159 | exit 1 | ||
160 | else | ||
161 | echo -e "Booting from: $BOOT_DEVICE ..." | ||
162 | mount -o ro -t "${FSTYPE}" "${BOOT_DEVICE}" /sysroot/mnt/cdrom >/dev/null 2>&1 | ||
163 | |||
164 | # write our boot_device to /mnt/.bootdev for later use (mtab) | ||
165 | echo "BOOTDEV=${BOOT_DEVICE}" > /sysroot/.bootdev | ||
166 | echo "FSTYPE=${FSTYPE}" >> /sysroot/.bootdev | ||
167 | |||
168 | # mount squashfs | ||
169 | echo -e "Mounting squashfs system image ..." | ||
170 | echo | ||
171 | [ ! -e /dev/loop0 ] && mknod /dev/loop0 b 7 0 | ||
172 | mount -o loop,ro -t squashfs /sysroot/mnt/cdrom/livecdrootfs.sqsh /sysroot/mnt/cloop | ||
173 | |||
174 | # symlinking cloop rootfs to /mnt as newroot | ||
175 | cd /sysroot | ||
176 | |||
177 | niro | 605 | for x in bin sbin lib lib64 boot usr opt |
178 | niro | 532 | do |
179 | niro | 605 | [ -d mnt/cloop/${x} ] && ln -s mnt/cloop/${x} ${x} |
180 | niro | 532 | done |
181 | mkdir -p initrd proc tmp sys var/tmp dev media | ||
182 | |||
183 | # make /sysroot/dev/console & /mnt/dev/null | ||
184 | [ ! -e /sysroot/dev/console ] && mknod -m 600 /sysroot/dev/console c 5 1 | ||
185 | [ ! -e /sysroot/dev/null ] && mknod -m 666 /sysroot/dev/null c 1 3 | ||
186 | niro | 753 | # only to be safe and to have a log channel |
187 | niro | 757 | [ ! -e /sysroot/dev/tty ] && mknod /sysroot/dev/tty c 5 0 |
188 | niro | 753 | # busybox needs this one |
189 | niro | 757 | [ ! -e /sysroot/dev/tty5 ] && mknod /sysroot/dev/tty5 c 4 5 |
190 | niro | 532 | |
191 | (cd /sysroot/mnt/cloop; cp -a etc root home var /sysroot) | ||
192 | |||
193 | # ensure the right permissions | ||
194 | chmod 1777 /sysroot/tmp | ||
195 | chmod 1777 /sysroot/var/tmp | ||
196 | fi | ||
197 | |||
198 | cd / | ||
199 | |||
200 | niro | 894 | # unset hotplug event-manager |
201 | echo > /proc/sys/kernel/hotplug | ||
202 | |||
203 | niro | 532 | # de-silencio |
204 | echo 3 > /proc/sys/kernel/printk | ||
205 | |||
206 | echo "-- Switching to real sysroot ..." | ||
207 | niro | 894 | umount /dev |
208 | niro | 532 | umount /sys |
209 | umount /proc | ||
210 | |||
211 | niro | 1180 | exec run-init /sysroot ${INITEXEC} $@ </sysroot/dev/console >/sysroot/dev/console |