blob: 915b7d0b939b3f3d5fb03a9645cc65a9c319e5c3 (
plain)
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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
#!/bin/sh
### BEGIN INIT INFO
# Provides: volatile
# Required-Start: $local_fs
# Required-Stop: $local_fs
# Default-Start: S
# Default-Stop:
# Short-Description: Populate the volatile filesystem
### END INIT INFO
# Get ROOT_DIR
DIRNAME=`dirname $0`
ROOT_DIR=`echo $DIRNAME | sed -ne 's:/etc/.*::p'`
[ -e ${ROOT_DIR}/etc/default/rcS ] && . ${ROOT_DIR}/etc/default/rcS
# When running populate-volatile.sh at rootfs time, disable cache.
[ -n "$ROOT_DIR" ] && VOLATILE_ENABLE_CACHE=no
# If rootfs is read-only, disable cache.
[ "$ROOTFS_READ_ONLY" = "yes" ] && VOLATILE_ENABLE_CACHE=no
CFGDIR="${ROOT_DIR}/etc/default/volatiles"
TMPROOT="${ROOT_DIR}/var/volatile/tmp"
COREDEF="00_core"
[ "${VERBOSE}" != "no" ] && echo "Populating volatile Filesystems."
create_file() {
EXEC="
touch \"$1\";
chown ${TUSER}.${TGROUP} $1 || echo \"Failed to set owner -${TUSER}- for -$1-.\" >/dev/tty0 2>&1;
chmod ${TMODE} $1 || echo \"Failed to set mode -${TMODE}- for -$1-.\" >/dev/tty0 2>&1 "
test "$VOLATILE_ENABLE_CACHE" = yes && echo "$EXEC" >> /etc/volatile.cache.build
[ -e "$1" ] && {
[ "${VERBOSE}" != "no" ] && echo "Target already exists. Skipping."
} || {
if [ -z "$ROOT_DIR" ]; then
eval $EXEC &
else
# Creating some files at rootfs time may fail and should fail,
# but these failures should not be logged to make sure the do_rootfs
# process doesn't fail. This does no harm, as this script will
# run on target to set up the correct files and directories.
eval $EXEC > /dev/null 2>&1
fi
}
}
mk_dir() {
EXEC="
mkdir -p \"$1\";
chown ${TUSER}.${TGROUP} $1 || echo \"Failed to set owner -${TUSER}- for -$1-.\" >/dev/tty0 2>&1;
chmod ${TMODE} $1 || echo \"Failed to set mode -${TMODE}- for -$1-.\" >/dev/tty0 2>&1 "
test "$VOLATILE_ENABLE_CACHE" = yes && echo "$EXEC" >> /etc/volatile.cache.build
[ -e "$1" ] && {
[ "${VERBOSE}" != "no" ] && echo "Target already exists. Skipping."
} || {
if [ -z "$ROOT_DIR" ]; then
eval $EXEC
else
# For the same reason with create_file(), failures should
# not be logged.
eval $EXEC > /dev/null 2>&1
fi
}
}
link_file() {
EXEC="
if [ -L \"$2\" ]; then
[ \"\$(readlink -f \"$2\")\" != \"\$(readlink -f \"$1\")\" ] && { rm -f \"$2\"; ln -sf \"$1\" \"$2\"; };
elif [ -d \"$2\" ]; then
cp -a $2/* $1 2>/dev/null;
cp -a $2/.[!.]* $1 2>/dev/null;
rm -rf \"$2\";
ln -sf \"$1\" \"$2\";
else
ln -sf \"$1\" \"$2\";
fi
"
test "$VOLATILE_ENABLE_CACHE" = yes && echo " $EXEC" >> /etc/volatile.cache.build
if [ -z "$ROOT_DIR" ]; then
eval $EXEC &
else
# For the same reason with create_file(), failures should
# not be logged.
eval $EXEC > /dev/null 2>&1
fi
}
check_requirements() {
cleanup() {
rm "${TMP_INTERMED}"
rm "${TMP_DEFINED}"
rm "${TMP_COMBINED}"
}
CFGFILE="$1"
[ `basename "${CFGFILE}"` = "${COREDEF}" ] && return 0
TMP_INTERMED="${TMPROOT}/tmp.$$"
TMP_DEFINED="${TMPROOT}/tmpdefined.$$"
TMP_COMBINED="${TMPROOT}/tmpcombined.$$"
cat ${ROOT_DIR}/etc/passwd | sed 's@\(^:\)*:.*@\1@' | sort | uniq > "${TMP_DEFINED}"
cat ${CFGFILE} | grep -v "^#" | cut -d " " -f 2 > "${TMP_INTERMED}"
cat "${TMP_DEFINED}" "${TMP_INTERMED}" | sort | uniq > "${TMP_COMBINED}"
NR_DEFINED_USERS="`cat "${TMP_DEFINED}" | wc -l`"
NR_COMBINED_USERS="`cat "${TMP_COMBINED}" | wc -l`"
[ "${NR_DEFINED_USERS}" -ne "${NR_COMBINED_USERS}" ] && {
echo "Undefined users:"
diff "${TMP_DEFINED}" "${TMP_COMBINED}" | grep "^>"
cleanup
return 1
}
cat ${ROOT_DIR}/etc/group | sed 's@\(^:\)*:.*@\1@' | sort | uniq > "${TMP_DEFINED}"
cat ${CFGFILE} | grep -v "^#" | cut -d " " -f 3 > "${TMP_INTERMED}"
cat "${TMP_DEFINED}" "${TMP_INTERMED}" | sort | uniq > "${TMP_COMBINED}"
NR_DEFINED_GROUPS="`cat "${TMP_DEFINED}" | wc -l`"
NR_COMBINED_GROUPS="`cat "${TMP_COMBINED}" | wc -l`"
[ "${NR_DEFINED_GROUPS}" -ne "${NR_COMBINED_GROUPS}" ] && {
echo "Undefined groups:"
diff "${TMP_DEFINED}" "${TMP_COMBINED}" | grep "^>"
cleanup
return 1
}
# Add checks for required directories here
cleanup
return 0
}
apply_cfgfile() {
CFGFILE="$1"
check_requirements "${CFGFILE}" || {
echo "Skipping ${CFGFILE}"
return 1
}
cat ${CFGFILE} | grep -v "^#" | \
while read LINE; do
eval `echo "$LINE" | sed -n "s/\(.*\)\ \(.*\) \(.*\)\ \(.*\)\ \(.*\)\ \(.*\)/TTYPE=\1 ; TUSER=\2; TGROUP=\3; TMODE=\4; TNAME=\5 TLTARGET=\6/p"`
TNAME=${ROOT_DIR}${TNAME}
[ "${VERBOSE}" != "no" ] && echo "Checking for -${TNAME}-."
[ "${TTYPE}" = "l" ] && {
TSOURCE="$TLTARGET"
[ "${VERBOSE}" != "no" ] && echo "Creating link -${TNAME}- pointing to -${TSOURCE}-."
link_file "${TSOURCE}" "${TNAME}"
continue
}
[ -L "${TNAME}" ] && {
[ "${VERBOSE}" != "no" ] && echo "Found link."
NEWNAME=`ls -l "${TNAME}" | sed -e 's/^.*-> \(.*\)$/\1/'`
echo ${NEWNAME} | grep -v "^/" >/dev/null && {
TNAME="`echo ${TNAME} | sed -e 's@\(.*\)/.*@\1@'`/${NEWNAME}"
[ "${VERBOSE}" != "no" ] && echo "Converted relative linktarget to absolute path -${TNAME}-."
} || {
TNAME="${NEWNAME}"
[ "${VERBOSE}" != "no" ] && echo "Using absolute link target -${TNAME}-."
}
}
case "${TTYPE}" in
"f") [ "${VERBOSE}" != "no" ] && echo "Creating file -${TNAME}-."
create_file "${TNAME}" &
;;
"d") [ "${VERBOSE}" != "no" ] && echo "Creating directory -${TNAME}-."
mk_dir "${TNAME}"
# Add check to see if there's an entry in fstab to mount.
;;
*) [ "${VERBOSE}" != "no" ] && echo "Invalid type -${TTYPE}-."
continue
;;
esac
done
return 0
}
clearcache=0
exec 9</proc/cmdline
while read line <&9
do
case "$line" in
*clearcache*) clearcache=1
;;
*) continue
;;
esac
done
exec 9>&-
if test -e ${ROOT_DIR}/etc/volatile.cache -a "$VOLATILE_ENABLE_CACHE" = "yes" -a "x$1" != "xupdate" -a "x$clearcache" = "x0"
then
sh ${ROOT_DIR}/etc/volatile.cache
else
rm -f ${ROOT_DIR}/etc/volatile.cache ${ROOT_DIR}/etc/volatile.cache.build
for file in `ls -1 "${CFGDIR}" | sort`; do
apply_cfgfile "${CFGDIR}/${file}"
done
[ -e ${ROOT_DIR}/etc/volatile.cache.build ] && sync && mv ${ROOT_DIR}/etc/volatile.cache.build ${ROOT_DIR}/etc/volatile.cache
fi
if [ -z "${ROOT_DIR}" ] && [ -f /etc/ld.so.cache ] && [ ! -f /var/run/ld.so.cache ]
then
ln -s /etc/ld.so.cache /var/run/ld.so.cache
fi
|
