Annotation of /tags/mkinitrd-6_3_0/livecd/linuxrc.sh
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Thu Aug 19 10:14:02 2010 UTC (14 years, 1 month ago) by niro
File MIME type: application/x-sh
File size: 4842 byte(s)
Thu Aug 19 10:14:02 2010 UTC (14 years, 1 month ago) by niro
File MIME type: application/x-sh
File size: 4842 byte(s)
tagged 'mkinitrd-6_3_0'
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 | 532 | |
63 | ## starts here ## | ||
64 | |||
65 | # mount essential filesystems | ||
66 | mount -t proc proc /proc | ||
67 | mount -t sysfs sysfs /sys | ||
68 | niro | 894 | mount -t tmpfs tmpfs /dev -o rw,mode=0644,size=1024 |
69 | niro | 532 | |
70 | niro | 894 | # install all busybox applets |
71 | busybox --install -s | ||
72 | |||
73 | niro | 532 | # silencio |
74 | echo 0 > /proc/sys/kernel/printk | ||
75 | |||
76 | # check command line for params | ||
77 | for i in $(cat /proc/cmdline) | ||
78 | do | ||
79 | case "${i}" in | ||
80 | niro | 894 | doscsi) DOSCSI=yes;; |
81 | noscsi) DOSCSI=no;; | ||
82 | dousb) DOUSB=yes;; | ||
83 | nousb) DOUSB=no;; | ||
84 | dosata) DOSATA=yes ;; | ||
85 | nosata) DOSATA=no ;; | ||
86 | dofb) DOFB=yes;; | ||
87 | nofb) DOFB=no;; | ||
88 | dopata) DOPATA=yes;; | ||
89 | nopata) DOPATA=no;; | ||
90 | rootfs=*) FORCED_ROOTFS="${i#*=}";; | ||
91 | niro | 532 | esac |
92 | done | ||
93 | |||
94 | # now load all needed modules | ||
95 | niro | 671 | [ "${DOFB}" = "yes" ] && load_kernel_modules "framebuffer" |
96 | niro | 532 | load_kernel_modules "generic" |
97 | niro | 673 | [ "${DOPATA}" = "yes" ] && load_kernel_modules "pata" |
98 | niro | 532 | [ "${DOSCSI}" = "yes" ] && load_kernel_modules "scsi" |
99 | [ "${DOUSB}" = "yes" ] && load_kernel_modules "usb" | ||
100 | [ "${DOSATA}" = "yes" ] && load_kernel_modules "sata" | ||
101 | |||
102 | niro | 894 | # populate dev |
103 | mdev -s | ||
104 | # handle hotplug events properly | ||
105 | echo /sbin/mdev > /proc/sys/kernel/hotplug | ||
106 | |||
107 | niro | 532 | # create newroot mount point |
108 | mkdir -p /sysroot | ||
109 | # fake a new filesystem (also needed with an initramfs!!) | ||
110 | mount -t tmpfs tmpfs /sysroot | ||
111 | |||
112 | mkdir -p /sysroot/mnt/cdrom | ||
113 | mkdir -p /sysroot/mnt/cloop | ||
114 | mkdir -p /sysroot/mnt/magellan | ||
115 | |||
116 | |||
117 | # needed for the usbstick, the timeout maybe to short | ||
118 | if [ "${DOUSB}" = "yes" ]; then | ||
119 | echo "-- Waiting 8 seconds for possible usb mount ..." | ||
120 | sleep 8 | ||
121 | fi | ||
122 | |||
123 | # searching cdrom with cdid | ||
124 | BOOT_DEVICE="" | ||
125 | FSTYPE="" | ||
126 | |||
127 | echo "Searching for a boot device ..." | ||
128 | |||
129 | # searching usbstick | ||
130 | if [ "${DOUSB}" = "yes" ]; then | ||
131 | niro | 663 | ROOTFS="vfat" |
132 | niro | 706 | [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}" |
133 | niro | 663 | check_drives "/dev/sd*" "${ROOTFS}" |
134 | check_drives "/dev/sg*" "${ROOTFS}" | ||
135 | niro | 532 | fi |
136 | |||
137 | # for cdrom_device in $CDROM_LIST (ide) | ||
138 | niro | 663 | ROOTFS="iso9660" |
139 | niro | 706 | [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}" |
140 | niro | 663 | check_drives "/dev/cdroms/*" "${ROOTFS}" |
141 | check_drives "/dev/hd*" "${ROOTFS}" | ||
142 | niro | 532 | |
143 | # scsi cdroms | ||
144 | if [ "${DOSCSI}" = "yes" ] || [ "${DOSATA}" = "yes" ]; then | ||
145 | niro | 663 | ROOTFS="iso9660" |
146 | niro | 706 | [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}" |
147 | niro | 663 | check_drives "/dev/sr*" "${ROOTFS}" |
148 | check_drives "/dev/sg*" "${ROOTFS}" | ||
149 | check_drives "/dev/scd*" "${ROOTFS}" | ||
150 | niro | 532 | fi |
151 | |||
152 | # mount our rootfs from cdrom | ||
153 | if [ "${BOOT_DEVICE}" = "" ] | ||
154 | then | ||
155 | echo "No Magellan boot CD/USBStick found!!!" | ||
156 | ash | ||
157 | exit 1 | ||
158 | else | ||
159 | echo -e "Booting from: $BOOT_DEVICE ..." | ||
160 | mount -o ro -t "${FSTYPE}" "${BOOT_DEVICE}" /sysroot/mnt/cdrom >/dev/null 2>&1 | ||
161 | |||
162 | # write our boot_device to /mnt/.bootdev for later use (mtab) | ||
163 | echo "BOOTDEV=${BOOT_DEVICE}" > /sysroot/.bootdev | ||
164 | echo "FSTYPE=${FSTYPE}" >> /sysroot/.bootdev | ||
165 | |||
166 | # mount squashfs | ||
167 | echo -e "Mounting squashfs system image ..." | ||
168 | echo | ||
169 | [ ! -e /dev/loop0 ] && mknod /dev/loop0 b 7 0 | ||
170 | mount -o loop,ro -t squashfs /sysroot/mnt/cdrom/livecdrootfs.sqsh /sysroot/mnt/cloop | ||
171 | |||
172 | # symlinking cloop rootfs to /mnt as newroot | ||
173 | cd /sysroot | ||
174 | |||
175 | niro | 605 | for x in bin sbin lib lib64 boot usr opt |
176 | niro | 532 | do |
177 | niro | 605 | [ -d mnt/cloop/${x} ] && ln -s mnt/cloop/${x} ${x} |
178 | niro | 532 | done |
179 | mkdir -p initrd proc tmp sys var/tmp dev media | ||
180 | |||
181 | # make /sysroot/dev/console & /mnt/dev/null | ||
182 | [ ! -e /sysroot/dev/console ] && mknod -m 600 /sysroot/dev/console c 5 1 | ||
183 | [ ! -e /sysroot/dev/null ] && mknod -m 666 /sysroot/dev/null c 1 3 | ||
184 | niro | 753 | # only to be safe and to have a log channel |
185 | niro | 757 | [ ! -e /sysroot/dev/tty ] && mknod /sysroot/dev/tty c 5 0 |
186 | niro | 753 | # busybox needs this one |
187 | niro | 757 | [ ! -e /sysroot/dev/tty5 ] && mknod /sysroot/dev/tty5 c 4 5 |
188 | niro | 532 | |
189 | (cd /sysroot/mnt/cloop; cp -a etc root home var /sysroot) | ||
190 | |||
191 | # ensure the right permissions | ||
192 | chmod 1777 /sysroot/tmp | ||
193 | chmod 1777 /sysroot/var/tmp | ||
194 | fi | ||
195 | |||
196 | cd / | ||
197 | |||
198 | niro | 894 | # unset hotplug event-manager |
199 | echo > /proc/sys/kernel/hotplug | ||
200 | |||
201 | niro | 532 | # de-silencio |
202 | echo 3 > /proc/sys/kernel/printk | ||
203 | |||
204 | echo "-- Switching to real sysroot ..." | ||
205 | niro | 894 | umount /dev |
206 | niro | 532 | umount /sys |
207 | umount /proc | ||
208 | |||
209 | exec run-init /sysroot /sbin/init $@ </sysroot/dev/console >/sysroot/dev/console |