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1 | ############################################################################### | |
2 | # # | |
3 | # IPFire.org - A linux based firewall # | |
4 | # Copyright (C) 2007-2012 IPFire Team <info@ipfire.org> # | |
5 | # # | |
6 | # This program is free software: you can redistribute it and/or modify # | |
7 | # it under the terms of the GNU General Public License as published by # | |
8 | # the Free Software Foundation, either version 3 of the License, or # | |
9 | # (at your option) any later version. # | |
10 | # # | |
11 | # This program is distributed in the hope that it will be useful, # | |
12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of # | |
13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # | |
14 | # GNU General Public License for more details. # | |
15 | # # | |
16 | # You should have received a copy of the GNU General Public License # | |
17 | # along with this program. If not, see <http://www.gnu.org/licenses/>. # | |
18 | # # | |
19 | ############################################################################### | |
20 | ||
21 | # Set histchars to an empty string so we are able to replace an | |
22 | # exclamation mark. | |
23 | histchars= | |
24 | ||
25 | echo "Scanning for possible destination drives" | |
26 | ||
27 | function _mount() { | |
28 | local what=${1} | |
29 | ||
30 | # Don't mount if the device does not exist. | |
31 | [ -e "${what}" ] || return 1 | |
32 | ||
33 | mount ${what} /harddisk 2>/dev/null | |
34 | } | |
35 | ||
36 | function _umount() { | |
37 | umount -l /harddisk 2>/dev/null | |
38 | } | |
39 | ||
40 | function check_source_drive() { | |
41 | local device="/dev/${1}" | |
42 | ||
43 | local ret=1 | |
44 | local dev | |
45 | for dev in ${device} ${device}1; do | |
46 | # Mount the device (if possible). | |
47 | _mount ${dev} || continue | |
48 | ||
49 | if [ -n "$(ls /harddisk/ipfire-*.tlz 2>/dev/null)" ]; then | |
50 | ret=0 | |
51 | fi | |
52 | ||
53 | _umount | |
54 | ||
55 | # Stop if the device has been detected as a source drive. | |
56 | [ "${ret}" = "0" ] && break | |
57 | done | |
58 | ||
59 | return ${ret} | |
60 | } | |
61 | ||
62 | for path in /sys/block/*; do | |
63 | device=$(basename ${path}) | |
64 | ||
65 | # Skip devices which cannot be used. | |
66 | case "${device}" in | |
67 | # Virtual devices. | |
68 | loop*|ram*) | |
69 | continue | |
70 | ;; | |
71 | # Floppy. | |
72 | fd*) | |
73 | continue | |
74 | ;; | |
75 | esac | |
76 | ||
77 | # Replace any exclamation marks (e.g. cciss!c0d0). | |
78 | device=${device//!/\/} | |
79 | ||
80 | # Guess if this could be a raid device. | |
81 | for dev in ${device} ${device}p1; do | |
82 | if [ -e "/dev/${dev}" ]; then | |
83 | device=${dev} | |
84 | break | |
85 | fi | |
86 | done | |
87 | ||
88 | echo "Checking ${device}" | |
89 | if check_source_drive ${device}; then | |
90 | echo " is source drive - skipping" | |
91 | continue | |
92 | fi | |
93 | ||
94 | # Found it. | |
95 | echo " OK, this is it..." | |
96 | echo -n "${device}" > /tmp/dest_device | |
97 | ||
98 | # Exit code table: | |
99 | # 1: sda | |
100 | # 2: RAID | |
101 | # 10: nothing found | |
102 | case "${device}" in | |
103 | *p1|*c0d0) | |
104 | exit 2 | |
105 | ;; | |
106 | *) | |
107 | exit 1 | |
108 | ;; | |
109 | esac | |
110 | done | |
111 | ||
112 | # Nothing found. | |
113 | exit 10 |