1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
# vim: set ft=sh:
# larch1 - live 'hook' for mkinitcpio: set up tmpfs and find boot device
# Author: Michael Towers (gradgrind) <mt.42@web.de>
#
# This file is part of the larch project.
#
# larch is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# larch is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with larch; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
#----------------------------------------------------------------------------
#2008.02.11
# Replacement for msg which includes leading and trailing spaces
msg_ () { [ "${quiet}" != "y" ] && echo "$@"; }
# Try to mount a disk, partition or cdrom and look for the file
# 'larchboot' in the /larch directory.
# If LiveCD system found in the device, return 0, else return 1
# and leave the device mounted.
# $1 = device name (e.g. "/dev/hda2")
# $2 = directory where devices will be mounted
#
test_live_data_dir ()
{
/bin/mount -r -t iso9660 "$1" $2 >/dev/null 2>/dev/null || \
/bin/mount -r -t vfat -o noatime,nodiratime "$1" $2 >/dev/null 2>/dev/null || \
/bin/mount -r -t ext2 -o noatime,nodiratime "$1" $2 >/dev/null 2>/dev/null
if [ $? -eq 0 ]; then
if [ -f "$2/larch/larchboot" ]; then
LDEV="$1"
msg_ " ... found at $1"
return 0
else
/bin/umount $2 2>/dev/null
msg_ " ... $1 mounted, but no 'larch/larchboot' found"
fi
else
msg_ " ... not $1"
fi
return 1
}
run_hook ()
{
msg_ ":: Creating writeable filesystem (tmpfs)"
/bin/mkdir "/tfs"
# Boot option copy-to-ram (c2r)
if [ "${c2r}" = "y" ]; then
TFSSIZE="90%"
else
TFSSIZE="60%"
fi
/bin/mount -t tmpfs -o "size=${TFSSIZE}" tmpfs "/tfs"
# Directory for test mounts (and then for live CD)
cdmount="/livecd"
/bin/mkdir "${cdmount}"
# look for livecd data directory, first try ${root}
LDEV="${root}"
if [ "x${LDEV}" != "x" ]; then
/bin/mount -r -t iso9660 "${LDEV}" "${cdmount}" >/dev/null 2>/dev/null || \
/bin/mount -r -t vfat -o noatime,nodiratime "${LDEV}" "${cdmount}" >/dev/null 2>/dev/null || \
/bin/mount -r -t ext2 -o noatime,nodiratime "${LDEV}" "${cdmount}" >/dev/null 2>/dev/null
if [ $? -eq 0 ]; then
if [ -d "${cdmount}/larch" ]; then
msg_ ":: larch system at ${LDEV}"
else
/bin/umount "${cdmount}" 2>/dev/null
echo "!! No larch system at ${LDEV}"
LDEV=""
fi
else
echo "!! Couldn't mount ${LDEV}"
LDEV=""
fi
fi
# then try cdroms
if [ "x${LDEV}" = "x" ]; then
msg_ ":: Looking for boot device"
cdroms=$( /bin/cat /proc/sys/dev/cdrom/info | { while read a b c; do
if [ "${a}" = "drive" -a "${b}" = "name:" ]; then
echo "${c}"
break
fi
done
} )
for i in ${cdroms}; do
test_live_data_dir "/dev/${i}" "${cdmount}"
if [ $? -eq 0 ]; then break; fi
done
fi
# test USB devices (and disks) repeatedly until timed out
if [ "x${LDEV}" = "x" ]; then
msg_ ":: Searching for usb (and disk) devices .."
for i in 1 2 3 4 5; do
msg_ " :wait ${i} :::"
/bin/sleep ${i}
for d in /dev/sd[a-z][0-9]*; do
test_live_data_dir "${d}" "${cdmount}"
if [ $? -eq 0 ]; then break 2; fi
done
msg_ ":: Searching for usb cdroms .."
for d in /dev/sr[0-9]*; do
test_live_data_dir "${d}" "${cdmount}"
if [ $? -eq 0 ]; then break 2; fi
done
done
fi
}
|
