Annotation of /trunk/mkinitrd-magellan/livecd/linuxrc.sh
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Sat Sep 1 22:45:15 2007 UTC (17 years, 2 months ago) by niro
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Sat Sep 1 22:45:15 2007 UTC (17 years, 2 months ago) by niro
File MIME type: application/x-sh
File size: 3980 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
1 | niro | 532 | #!/bin/sh |
2 | # $Header: /home/cvsd/magellan-cvs/magellan-src/mkinitrd-magellan/livecd/linuxrc.sh,v 1.1 2007-09-01 22:44:23 niro Exp $ | ||
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=no | ||
59 | NOPATA=no | ||
60 | |||
61 | ## starts here ## | ||
62 | |||
63 | # mount essential filesystems | ||
64 | mount -t proc proc /proc | ||
65 | mount -t sysfs sysfs /sys | ||
66 | |||
67 | # silencio | ||
68 | echo 0 > /proc/sys/kernel/printk | ||
69 | |||
70 | # check command line for params | ||
71 | for i in $(cat /proc/cmdline) | ||
72 | do | ||
73 | case "${i}" in | ||
74 | doscsi) | ||
75 | DOSCSI=yes | ||
76 | ;; | ||
77 | dousb) | ||
78 | DOUSB=yes | ||
79 | ;; | ||
80 | dosata) | ||
81 | DOSATA=yes | ||
82 | ;; | ||
83 | nopata) | ||
84 | NOPATA=yes | ||
85 | ;; | ||
86 | esac | ||
87 | done | ||
88 | |||
89 | # now load all needed modules | ||
90 | load_kernel_modules "generic" | ||
91 | [ "${NOPATA}" != "yes" ] && load_kernel_modules "pata" | ||
92 | [ "${DOSCSI}" = "yes" ] && load_kernel_modules "scsi" | ||
93 | [ "${DOUSB}" = "yes" ] && load_kernel_modules "usb" | ||
94 | [ "${DOSATA}" = "yes" ] && load_kernel_modules "sata" | ||
95 | |||
96 | # create newroot mount point | ||
97 | mkdir -p /sysroot | ||
98 | # fake a new filesystem (also needed with an initramfs!!) | ||
99 | mount -t tmpfs tmpfs /sysroot | ||
100 | |||
101 | mkdir -p /sysroot/mnt/cdrom | ||
102 | mkdir -p /sysroot/mnt/cloop | ||
103 | mkdir -p /sysroot/mnt/magellan | ||
104 | |||
105 | |||
106 | # needed for the usbstick, the timeout maybe to short | ||
107 | if [ "${DOUSB}" = "yes" ]; then | ||
108 | echo "-- Waiting 8 seconds for possible usb mount ..." | ||
109 | sleep 8 | ||
110 | fi | ||
111 | |||
112 | # searching cdrom with cdid | ||
113 | BOOT_DEVICE="" | ||
114 | FSTYPE="" | ||
115 | |||
116 | echo "Searching for a boot device ..." | ||
117 | |||
118 | # searching usbstick | ||
119 | if [ "${DOUSB}" = "yes" ]; then | ||
120 | check_drives "/dev/sd*" "vfat" | ||
121 | check_drives "/dev/sg*" "vfat" | ||
122 | fi | ||
123 | |||
124 | # for cdrom_device in $CDROM_LIST (ide) | ||
125 | check_drives "/dev/cdroms/*" iso9660 | ||
126 | check_drives "/dev/hd*" iso9660 | ||
127 | |||
128 | # scsi cdroms | ||
129 | if [ "${DOSCSI}" = "yes" ] || [ "${DOSATA}" = "yes" ]; then | ||
130 | check_drives "/dev/sr*" iso9660 | ||
131 | check_drives "/dev/sg*" iso9660 | ||
132 | check_drives "/dev/scd*" iso9660 | ||
133 | fi | ||
134 | |||
135 | # mount our rootfs from cdrom | ||
136 | if [ "${BOOT_DEVICE}" = "" ] | ||
137 | then | ||
138 | echo "No Magellan boot CD/USBStick found!!!" | ||
139 | ash | ||
140 | exit 1 | ||
141 | else | ||
142 | echo -e "Booting from: $BOOT_DEVICE ..." | ||
143 | mount -o ro -t "${FSTYPE}" "${BOOT_DEVICE}" /sysroot/mnt/cdrom >/dev/null 2>&1 | ||
144 | |||
145 | # write our boot_device to /mnt/.bootdev for later use (mtab) | ||
146 | echo "BOOTDEV=${BOOT_DEVICE}" > /sysroot/.bootdev | ||
147 | echo "FSTYPE=${FSTYPE}" >> /sysroot/.bootdev | ||
148 | |||
149 | # mount squashfs | ||
150 | echo -e "Mounting squashfs system image ..." | ||
151 | echo | ||
152 | [ ! -e /dev/loop0 ] && mknod /dev/loop0 b 7 0 | ||
153 | mount -o loop,ro -t squashfs /sysroot/mnt/cdrom/livecdrootfs.sqsh /sysroot/mnt/cloop | ||
154 | |||
155 | # symlinking cloop rootfs to /mnt as newroot | ||
156 | cd /sysroot | ||
157 | |||
158 | for x in bin sbin lib boot usr opt | ||
159 | do | ||
160 | ln -s mnt/cloop/${x} ${x} | ||
161 | done | ||
162 | mkdir -p initrd proc tmp sys var/tmp dev media | ||
163 | |||
164 | # make /sysroot/dev/console & /mnt/dev/null | ||
165 | [ ! -e /sysroot/dev/console ] && mknod -m 600 /sysroot/dev/console c 5 1 | ||
166 | [ ! -e /sysroot/dev/null ] && mknod -m 666 /sysroot/dev/null c 1 3 | ||
167 | |||
168 | (cd /sysroot/mnt/cloop; cp -a etc root home var /sysroot) | ||
169 | |||
170 | # ensure the right permissions | ||
171 | chmod 1777 /sysroot/tmp | ||
172 | chmod 1777 /sysroot/var/tmp | ||
173 | fi | ||
174 | |||
175 | cd / | ||
176 | |||
177 | # de-silencio | ||
178 | echo 3 > /proc/sys/kernel/printk | ||
179 | |||
180 | echo "-- Switching to real sysroot ..." | ||
181 | umount /sys | ||
182 | umount /proc | ||
183 | |||
184 | exec run-init /sysroot /sbin/init $@ </sysroot/dev/console >/sysroot/dev/console |