Contents of /tags/mkinitrd-6_3_0/livecd/linuxrc.sh
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Wed Aug 5 16:24:23 2009 UTC (15 years, 1 month ago) by niro
Original Path: trunk/mkinitrd-magellan/livecd/linuxrc.sh
File MIME type: application/x-sh
File size: 4842 byte(s)
Wed Aug 5 16:24:23 2009 UTC (15 years, 1 month ago) by niro
Original Path: trunk/mkinitrd-magellan/livecd/linuxrc.sh
File MIME type: application/x-sh
File size: 4842 byte(s)
-install all busybox applets -use mdev for /dev management -use inmod from busybox -fixed a small typo regarding v86d installation -set DOSATA and DOPATA as default settings -support all do/no commandline combinations
1 | #!/bin/sh |
2 | # $Id$ |
3 | |
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 | FSTYPE="${fs}" |
49 | break |
50 | fi |
51 | fi |
52 | done |
53 | } |
54 | |
55 | ## some defaults ## |
56 | DOSCSI=no |
57 | DOUSB=no |
58 | DOSATA=yes |
59 | DOFB=no |
60 | DOPATA=yes |
61 | FORCED_ROOTFS="" |
62 | |
63 | ## starts here ## |
64 | |
65 | # mount essential filesystems |
66 | mount -t proc proc /proc |
67 | mount -t sysfs sysfs /sys |
68 | mount -t tmpfs tmpfs /dev -o rw,mode=0644,size=1024 |
69 | |
70 | # install all busybox applets |
71 | busybox --install -s |
72 | |
73 | # 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 | 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="${i#*=}";; |
91 | esac |
92 | done |
93 | |
94 | # now load all needed modules |
95 | [ "${DOFB}" = "yes" ] && load_kernel_modules "framebuffer" |
96 | load_kernel_modules "generic" |
97 | [ "${DOPATA}" = "yes" ] && load_kernel_modules "pata" |
98 | [ "${DOSCSI}" = "yes" ] && load_kernel_modules "scsi" |
99 | [ "${DOUSB}" = "yes" ] && load_kernel_modules "usb" |
100 | [ "${DOSATA}" = "yes" ] && load_kernel_modules "sata" |
101 | |
102 | # populate dev |
103 | mdev -s |
104 | # handle hotplug events properly |
105 | echo /sbin/mdev > /proc/sys/kernel/hotplug |
106 | |
107 | # 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 | ROOTFS="vfat" |
132 | [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}" |
133 | check_drives "/dev/sd*" "${ROOTFS}" |
134 | check_drives "/dev/sg*" "${ROOTFS}" |
135 | fi |
136 | |
137 | # for cdrom_device in $CDROM_LIST (ide) |
138 | ROOTFS="iso9660" |
139 | [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}" |
140 | check_drives "/dev/cdroms/*" "${ROOTFS}" |
141 | check_drives "/dev/hd*" "${ROOTFS}" |
142 | |
143 | # scsi cdroms |
144 | if [ "${DOSCSI}" = "yes" ] || [ "${DOSATA}" = "yes" ]; then |
145 | ROOTFS="iso9660" |
146 | [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}" |
147 | check_drives "/dev/sr*" "${ROOTFS}" |
148 | check_drives "/dev/sg*" "${ROOTFS}" |
149 | check_drives "/dev/scd*" "${ROOTFS}" |
150 | fi |
151 | |
152 | # mount our rootfs from cdrom |
153 | if [ "${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=${FSTYPE}" >> /sysroot/.bootdev |
165 | |
166 | # mount squashfs |
167 | echo -e "Mounting squashfs system image ..." |
168 | echo |
169 | [ ! -e /dev/loop0 ] && mknod /dev/loop0 b 7 0 |
170 | mount -o loop,ro -t squashfs /sysroot/mnt/cdrom/livecdrootfs.sqsh /sysroot/mnt/cloop |
171 | |
172 | # symlinking cloop rootfs to /mnt as newroot |
173 | cd /sysroot |
174 | |
175 | for x in bin sbin lib lib64 boot usr opt |
176 | do |
177 | [ -d mnt/cloop/${x} ] && ln -s mnt/cloop/${x} ${x} |
178 | 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 | # only to be safe and to have a log channel |
185 | [ ! -e /sysroot/dev/tty ] && mknod /sysroot/dev/tty c 5 0 |
186 | # busybox needs this one |
187 | [ ! -e /sysroot/dev/tty5 ] && mknod /sysroot/dev/tty5 c 4 5 |
188 | |
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 | # unset hotplug event-manager |
199 | echo > /proc/sys/kernel/hotplug |
200 | |
201 | # de-silencio |
202 | echo 3 > /proc/sys/kernel/printk |
203 | |
204 | echo "-- Switching to real sysroot ..." |
205 | umount /dev |
206 | umount /sys |
207 | umount /proc |
208 | |
209 | exec run-init /sysroot /sbin/init $@ </sysroot/dev/console >/sysroot/dev/console |