diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /scripts/gen_initramfs_list.sh |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'scripts/gen_initramfs_list.sh')
-rw-r--r-- | scripts/gen_initramfs_list.sh | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/scripts/gen_initramfs_list.sh b/scripts/gen_initramfs_list.sh new file mode 100644 index 000000000000..6d411169bfa6 --- /dev/null +++ b/scripts/gen_initramfs_list.sh | |||
@@ -0,0 +1,203 @@ | |||
1 | #!/bin/bash | ||
2 | # Copyright (C) Martin Schlemmer <azarah@nosferatu.za.org> | ||
3 | # Released under the terms of the GNU GPL | ||
4 | # | ||
5 | # Generate a newline separated list of entries from the file/directory | ||
6 | # supplied as an argument. | ||
7 | # | ||
8 | # If a file/directory is not supplied then generate a small dummy file. | ||
9 | # | ||
10 | # The output is suitable for gen_init_cpio built from usr/gen_init_cpio.c. | ||
11 | # | ||
12 | |||
13 | default_initramfs() { | ||
14 | cat <<-EOF | ||
15 | # This is a very simple, default initramfs | ||
16 | |||
17 | dir /dev 0755 0 0 | ||
18 | nod /dev/console 0600 0 0 c 5 1 | ||
19 | dir /root 0700 0 0 | ||
20 | EOF | ||
21 | } | ||
22 | |||
23 | filetype() { | ||
24 | local argv1="$1" | ||
25 | |||
26 | # symlink test must come before file test | ||
27 | if [ -L "${argv1}" ]; then | ||
28 | echo "slink" | ||
29 | elif [ -f "${argv1}" ]; then | ||
30 | echo "file" | ||
31 | elif [ -d "${argv1}" ]; then | ||
32 | echo "dir" | ||
33 | elif [ -b "${argv1}" -o -c "${argv1}" ]; then | ||
34 | echo "nod" | ||
35 | elif [ -p "${argv1}" ]; then | ||
36 | echo "pipe" | ||
37 | elif [ -S "${argv1}" ]; then | ||
38 | echo "sock" | ||
39 | else | ||
40 | echo "invalid" | ||
41 | fi | ||
42 | return 0 | ||
43 | } | ||
44 | |||
45 | print_mtime() { | ||
46 | local argv1="$1" | ||
47 | local my_mtime="0" | ||
48 | |||
49 | if [ -e "${argv1}" ]; then | ||
50 | my_mtime=$(find "${argv1}" -printf "%T@\n" | sort -r | head -n 1) | ||
51 | fi | ||
52 | |||
53 | echo "# Last modified: ${my_mtime}" | ||
54 | echo | ||
55 | } | ||
56 | |||
57 | parse() { | ||
58 | local location="$1" | ||
59 | local name="${location/${srcdir}//}" | ||
60 | # change '//' into '/' | ||
61 | name="${name//\/\///}" | ||
62 | local mode="$2" | ||
63 | local uid="$3" | ||
64 | local gid="$4" | ||
65 | local ftype=$(filetype "${location}") | ||
66 | # remap uid/gid to 0 if necessary | ||
67 | [ "$uid" -eq "$root_uid" ] && uid=0 | ||
68 | [ "$gid" -eq "$root_gid" ] && gid=0 | ||
69 | local str="${mode} ${uid} ${gid}" | ||
70 | |||
71 | [ "${ftype}" == "invalid" ] && return 0 | ||
72 | [ "${location}" == "${srcdir}" ] && return 0 | ||
73 | |||
74 | case "${ftype}" in | ||
75 | "file") | ||
76 | str="${ftype} ${name} ${location} ${str}" | ||
77 | ;; | ||
78 | "nod") | ||
79 | local dev_type= | ||
80 | local maj=$(LC_ALL=C ls -l "${location}" | \ | ||
81 | gawk '{sub(/,/, "", $5); print $5}') | ||
82 | local min=$(LC_ALL=C ls -l "${location}" | \ | ||
83 | gawk '{print $6}') | ||
84 | |||
85 | if [ -b "${location}" ]; then | ||
86 | dev_type="b" | ||
87 | else | ||
88 | dev_type="c" | ||
89 | fi | ||
90 | str="${ftype} ${name} ${str} ${dev_type} ${maj} ${min}" | ||
91 | ;; | ||
92 | "slink") | ||
93 | local target=$(LC_ALL=C ls -l "${location}" | \ | ||
94 | gawk '{print $11}') | ||
95 | str="${ftype} ${name} ${target} ${str}" | ||
96 | ;; | ||
97 | *) | ||
98 | str="${ftype} ${name} ${str}" | ||
99 | ;; | ||
100 | esac | ||
101 | |||
102 | echo "${str}" | ||
103 | |||
104 | return 0 | ||
105 | } | ||
106 | |||
107 | usage() { | ||
108 | printf "Usage:\n" | ||
109 | printf "$0 [ [-u <root_uid>] [-g <root_gid>] [-d | <cpio_source>] ] . . .\n" | ||
110 | printf "\n" | ||
111 | printf -- "-u <root_uid> User ID to map to user ID 0 (root).\n" | ||
112 | printf " <root_uid> is only meaningful if <cpio_source>\n" | ||
113 | printf " is a directory.\n" | ||
114 | printf -- "-g <root_gid> Group ID to map to group ID 0 (root).\n" | ||
115 | printf " <root_gid> is only meaningful if <cpio_source>\n" | ||
116 | printf " is a directory.\n" | ||
117 | printf "<cpio_source> File list or directory for cpio archive.\n" | ||
118 | printf " If <cpio_source> is not provided then a\n" | ||
119 | printf " a default list will be output.\n" | ||
120 | printf -- "-d Output the default cpio list. If no <cpio_source>\n" | ||
121 | printf " is given then the default cpio list will be output.\n" | ||
122 | printf "\n" | ||
123 | printf "All options may be repeated and are interpreted sequentially\n" | ||
124 | printf "and immediately. -u and -g states are preserved across\n" | ||
125 | printf "<cpio_source> options so an explicit \"-u 0 -g 0\" is required\n" | ||
126 | printf "to reset the root/group mapping.\n" | ||
127 | } | ||
128 | |||
129 | build_list() { | ||
130 | printf "\n#####################\n# $cpio_source\n" | ||
131 | |||
132 | if [ -f "$cpio_source" ]; then | ||
133 | print_mtime "$cpio_source" | ||
134 | cat "$cpio_source" | ||
135 | elif [ -d "$cpio_source" ]; then | ||
136 | srcdir=$(echo "$cpio_source" | sed -e 's://*:/:g') | ||
137 | dirlist=$(find "${srcdir}" -printf "%p %m %U %G\n" 2>/dev/null) | ||
138 | |||
139 | # If $dirlist is only one line, then the directory is empty | ||
140 | if [ "$(echo "${dirlist}" | wc -l)" -gt 1 ]; then | ||
141 | print_mtime "$cpio_source" | ||
142 | |||
143 | echo "${dirlist}" | \ | ||
144 | while read x; do | ||
145 | parse ${x} | ||
146 | done | ||
147 | else | ||
148 | # Failsafe in case directory is empty | ||
149 | default_initramfs | ||
150 | fi | ||
151 | else | ||
152 | echo " $0: Cannot open '$cpio_source'" >&2 | ||
153 | exit 1 | ||
154 | fi | ||
155 | } | ||
156 | |||
157 | |||
158 | root_uid=0 | ||
159 | root_gid=0 | ||
160 | |||
161 | while [ $# -gt 0 ]; do | ||
162 | arg="$1" | ||
163 | shift | ||
164 | case "$arg" in | ||
165 | "-u") | ||
166 | root_uid="$1" | ||
167 | shift | ||
168 | ;; | ||
169 | "-g") | ||
170 | root_gid="$1" | ||
171 | shift | ||
172 | ;; | ||
173 | "-d") | ||
174 | default_list="$arg" | ||
175 | default_initramfs | ||
176 | ;; | ||
177 | "-h") | ||
178 | usage | ||
179 | exit 0 | ||
180 | ;; | ||
181 | *) | ||
182 | case "$arg" in | ||
183 | "-"*) | ||
184 | printf "ERROR: unknown option \"$arg\"\n" >&2 | ||
185 | printf "If the filename validly begins with '-', then it must be prefixed\n" >&2 | ||
186 | printf "by './' so that it won't be interpreted as an option." >&2 | ||
187 | printf "\n" >&2 | ||
188 | usage >&2 | ||
189 | exit 1 | ||
190 | ;; | ||
191 | *) | ||
192 | cpio_source="$arg" | ||
193 | build_list | ||
194 | ;; | ||
195 | esac | ||
196 | ;; | ||
197 | esac | ||
198 | done | ||
199 | |||
200 | # spit out the default cpio list if a source hasn't been specified | ||
201 | [ -z "$cpio_source" -a -z "$default_list" ] && default_initramfs | ||
202 | |||
203 | exit 0 | ||