Root/package/base-files/files/lib/functions.sh

1#!/bin/sh
2# Copyright (C) 2006-2011 OpenWrt.org
3# Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
4
5
6debug () {
7    ${DEBUG:-:} "$@"
8}
9
10# newline
11N="
12"
13
14_C=0
15NO_EXPORT=1
16LOAD_STATE=1
17LIST_SEP=" "
18
19hotplug_dev() {
20    env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug-call net
21}
22
23append() {
24    local var="$1"
25    local value="$2"
26    local sep="${3:- }"
27
28    eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
29}
30
31list_contains() {
32    local var="$1"
33    local str="$2"
34    local val
35
36    eval "val=\" \${$var} \""
37    [ "${val%% $str *}" != "$val" ]
38}
39
40list_remove() {
41    local var="$1"
42    local remove="$2"
43    local val
44
45    eval "val=\" \${$var} \""
46    val1="${val%% $remove *}"
47    [ "$val1" = "$val" ] && return
48    val2="${val##* $remove }"
49    [ "$val2" = "$val" ] && return
50    val="${val1## } ${val2%% }"
51    val="${val%% }"
52    eval "export ${NO_EXPORT:+-n} -- \"$var=\$val\""
53}
54
55config_load() {
56    [ -n "$IPKG_INSTROOT" ] && return 0
57    uci_load "$@"
58}
59
60reset_cb() {
61    config_cb() { return 0; }
62    option_cb() { return 0; }
63    list_cb() { return 0; }
64}
65reset_cb
66
67package() {
68    return 0
69}
70
71config () {
72    local cfgtype="$1"
73    local name="$2"
74
75    export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$(($CONFIG_NUM_SECTIONS + 1))
76    name="${name:-cfg$CONFIG_NUM_SECTIONS}"
77    append CONFIG_SECTIONS "$name"
78    [ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name"
79    export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
80    export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
81}
82
83option () {
84    local varname="$1"; shift
85    local value="$*"
86
87    export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_${varname}=$value"
88    [ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*"
89}
90
91list() {
92    local varname="$1"; shift
93    local value="$*"
94    local len
95
96    config_get len "$CONFIG_SECTION" "${varname}_LENGTH" 0
97    [ $len = 0 ] && append CONFIG_LIST_STATE "${CONFIG_SECTION}_${varname}"
98    len=$(($len + 1))
99    config_set "$CONFIG_SECTION" "${varname}_ITEM$len" "$value"
100    config_set "$CONFIG_SECTION" "${varname}_LENGTH" "$len"
101    append "CONFIG_${CONFIG_SECTION}_${varname}" "$value" "$LIST_SEP"
102    list_cb "$varname" "$*"
103}
104
105config_rename() {
106    local OLD="$1"
107    local NEW="$2"
108    local oldvar
109    local newvar
110
111    [ -n "$OLD" -a -n "$NEW" ] || return
112    for oldvar in `set | grep ^CONFIG_${OLD}_ | \
113        sed -e 's/\(.*\)=.*$/\1/'` ; do
114        newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
115        eval "export ${NO_EXPORT:+-n} \"$newvar=\${$oldvar}\""
116        unset "$oldvar"
117    done
118    export ${NO_EXPORT:+-n} CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , $NEW ,")"
119
120    [ "$CONFIG_SECTION" = "$OLD" ] && export ${NO_EXPORT:+-n} CONFIG_SECTION="$NEW"
121}
122
123config_unset() {
124    config_set "$1" "$2" ""
125}
126
127config_clear() {
128    local SECTION="$1"
129    local oldvar
130
131    list_remove CONFIG_SECTIONS "$SECTION"
132    export ${NO_EXPORT:+-n} CONFIG_SECTIONS="${SECTION:+$CONFIG_SECTIONS}"
133
134    for oldvar in `set | grep ^CONFIG_${SECTION:+${SECTION}_} | \
135        sed -e 's/\(.*\)=.*$/\1/'` ; do
136        unset $oldvar
137    done
138}
139
140# config_get <variable> <section> <option> [<default>]
141# config_get <section> <option>
142config_get() {
143    case "$3" in
144        "") eval echo "\${CONFIG_${1}_${2}:-\${4}}";;
145        *) eval export ${NO_EXPORT:+-n} -- "${1}=\${CONFIG_${2}_${3}:-\${4}}";;
146    esac
147}
148
149# config_get_bool <variable> <section> <option> [<default>]
150config_get_bool() {
151    local _tmp
152    config_get _tmp "$2" "$3" "$4"
153    case "$_tmp" in
154        1|on|true|enabled) _tmp=1;;
155        0|off|false|disabled) _tmp=0;;
156        *) _tmp="$4";;
157    esac
158    export ${NO_EXPORT:+-n} "$1=$_tmp"
159}
160
161config_set() {
162    local section="$1"
163    local option="$2"
164    local value="$3"
165    local old_section="$CONFIG_SECTION"
166
167    CONFIG_SECTION="$section"
168    option "$option" "$value"
169    CONFIG_SECTION="$old_section"
170}
171
172config_foreach() {
173    local ___function="$1"
174    [ "$#" -ge 1 ] && shift
175    local ___type="$1"
176    [ "$#" -ge 1 ] && shift
177    local section cfgtype
178
179    [ -z "$CONFIG_SECTIONS" ] && return 0
180    for section in ${CONFIG_SECTIONS}; do
181        config_get cfgtype "$section" TYPE
182        [ -n "$___type" -a "x$cfgtype" != "x$___type" ] && continue
183        eval "$___function \"\$section\" \"\$@\""
184    done
185}
186
187config_list_foreach() {
188    [ "$#" -ge 3 ] || return 0
189    local section="$1"; shift
190    local option="$1"; shift
191    local function="$1"; shift
192    local val
193    local len
194    local c=1
195
196    config_get len "${section}" "${option}_LENGTH"
197    [ -z "$len" ] && return 0
198    while [ $c -le "$len" ]; do
199        config_get val "${section}" "${option}_ITEM$c"
200        eval "$function \"\$val\" \"\$@\""
201        c="$(($c + 1))"
202    done
203}
204
205load_modules() {
206    [ -d /etc/modules.d ] && {
207        cd /etc/modules.d
208        sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
209    }
210}
211
212include() {
213    local file
214
215    for file in $(ls $1/*.sh 2>/dev/null); do
216        . $file
217    done
218}
219
220find_mtd_index() {
221    local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
222    local INDEX="${PART##mtd}"
223
224    echo ${INDEX}
225}
226
227find_mtd_part() {
228    local INDEX=$(find_mtd_index "$1")
229    local PREFIX=/dev/mtdblock
230
231    [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
232    echo "${INDEX:+$PREFIX$INDEX}"
233}
234
235find_mtd_chardev() {
236    local INDEX=$(find_mtd_index "$1")
237    local PREFIX=/dev/mtd
238
239    [ -d /dev/mtd ] && PREFIX=/dev/mtd/
240    echo "${INDEX:+$PREFIX$INDEX}"
241}
242
243strtok() { # <string> { <variable> [<separator>] ... }
244    local tmp
245    local val="$1"
246    local count=0
247
248    shift
249
250    while [ $# -gt 1 ]; do
251        tmp="${val%%$2*}"
252
253        [ "$tmp" = "$val" ] && break
254
255        val="${val#$tmp$2}"
256
257        export ${NO_EXPORT:+-n} "$1=$tmp"; count=$((count+1))
258        shift 2
259    done
260
261    if [ $# -gt 0 -a -n "$val" ]; then
262        export ${NO_EXPORT:+-n} "$1=$val"; count=$((count+1))
263    fi
264
265    return $count
266}
267
268
269jffs2_mark_erase() {
270    local part="$(find_mtd_part "$1")"
271    [ -z "$part" ] && {
272        echo Partition not found.
273        return 1
274    }
275    echo -e "\xde\xad\xc0\xde" | mtd -qq write - "$1"
276}
277
278uci_apply_defaults() {
279    cd /etc/uci-defaults || return 0
280    files="$(ls)"
281    [ -z "$files" ] && return 0
282    mkdir -p /tmp/.uci
283    for file in $files; do
284        ( . "./$(basename $file)" ) && rm -f "$file"
285    done
286    uci commit
287}
288
289group_add() {
290    local name="$1"
291    local gid="$2"
292    local rc
293    [ -f "${IPKG_INSTROOT}/etc/group" ] || return 1
294    [ -n "$IPKG_INSTROOT" ] || lock /var/lock/group
295    echo "${name}:x:${gid}:" >> ${IPKG_INSTROOT}/etc/group
296    rc=$?
297    [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/group
298    return $rc
299}
300
301group_exists() {
302    grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/group
303}
304
305user_add() {
306    local name="${1}"
307    local uid="${2}"
308    local gid="${3:-$2}"
309    local desc="${4:-$1}"
310    local home="${5:-/var/run/$1}"
311    local shell="${6:-/bin/false}"
312    local rc
313    [ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
314    [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
315    echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
316    echo "${name}:x:0:0:99999:7:::" >> ${IPKG_INSTROOT}/etc/shadow
317    rc=$?
318    [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
319    return $rc
320}
321
322user_exists() {
323    grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
324}
325
326
327pi_include() {
328    if [ -f "/tmp/overlay/$1" ]; then
329        . "/tmp/overlay/$1"
330    elif [ -f "$1" ]; then
331        . "$1"
332    elif [ -d "/tmp/overlay/$1" ]; then
333        if [ -n "$(ls /tmp/overlay/$1/*.sh 2>/dev/null)" ]; then
334            for src_script in /tmp/overlay/$1/*.sh; do
335                . "$src_script"
336            done
337        fi
338    elif [ -d "$1" ]; then
339        if [ -n "$(ls $1/*.sh 2>/dev/null)" ]; then
340            for src_script in $1/*.sh; do
341                . "$src_script"
342            done
343        fi
344    else
345        echo "WARNING: $1 not found"
346        return 1
347    fi
348    return 0
349}
350
351#!/bin/sh
352# Copyright (C) 2006-2010 OpenWrt.org
353# Copyright (C) 2010 Vertical Communications
354
355boot_hook_splice_start() {
356    export -n PI_HOOK_SPLICE=1
357}
358
359boot_hook_splice_finish() {
360    local hook
361    for hook in $PI_STACK_LIST; do
362        local v; eval "v=\${${hook}_splice:+\$${hook}_splice }$hook"
363        export -n "${hook}=${v% }"
364        export -n "${hook}_splice="
365    done
366    export -n PI_HOOK_SPLICE=
367}
368
369boot_hook_init() {
370    local hook="${1}_hook"
371    export -n "PI_STACK_LIST=${PI_STACK_LIST:+$PI_STACK_LIST }$hook"
372    export -n "$hook="
373}
374
375boot_hook_add() {
376    local hook="${1}_hook${PI_HOOK_SPLICE:+_splice}"
377    local func="${2}"
378
379    [ -n "$func" ] && {
380        local v; eval "v=\$$hook"
381        export -n "$hook=${v:+$v }$func"
382    }
383}
384
385boot_hook_shift() {
386    local hook="${1}_hook"
387    local rvar="${2}"
388
389    local v; eval "v=\$$hook"
390    [ -n "$v" ] && {
391        local first="${v%% *}"
392
393        [ "$v" != "${v#* }" ] && \
394            export -n "$hook=${v#* }" || \
395            export -n "$hook="
396
397        export -n "$rvar=$first"
398        return 0
399    }
400
401    return 1
402}
403
404boot_run_hook() {
405    local hook="$1"
406    local func
407
408    while boot_hook_shift "$hook" func; do
409        local ran; eval "ran=\$PI_RAN_$func"
410        [ -n "$ran" ] || {
411            export -n "PI_RAN_$func=1"
412            $func "$1" "$2"
413        }
414    done
415}
416
417jffs2_ready () {
418    mtdpart="$(find_mtd_part rootfs_data)"
419    [ -z "$mtdpart" ] && return 1
420    magic=$(hexdump $mtdpart -n 4 -e '4/1 "%02x"')
421    [ "$magic" != "deadc0de" ]
422}
423
424dupe() { # <new_root> <old_root>
425    cd $1
426    echo -n "creating directories... "
427    {
428        cd $2
429        find . -xdev -type d
430        echo "./dev ./overlay ./mnt ./proc ./tmp"
431        # xdev skips mounted directories
432        cd $1
433    } | xargs mkdir -p
434    echo "done"
435
436    echo -n "setting up symlinks... "
437    for file in $(cd $2; find . -xdev -type f;); do
438        case "$file" in
439        ./rom/note) ;; #nothing
440        ./etc/config*|\
441        ./usr/lib/opkg/info/*) cp -af $2/$file $file;;
442        *) ln -sf /rom/${file#./*} $file;;
443        esac
444    done
445    for file in $(cd $2; find . -xdev -type l;); do
446        cp -af $2/${file#./*} $file
447    done
448    echo "done"
449}
450
451pivot() { # <new_root> <old_root>
452    mount -o noatime,move /proc $1/proc && \
453    pivot_root $1 $1$2 && {
454        mount -o noatime,move $2/dev /dev
455        mount -o noatime,move $2/tmp /tmp
456        mount -o noatime,move $2/sys /sys 2>&-
457        mount -o noatime,move $2/overlay /overlay 2>&-
458        return 0
459    }
460}
461
462fopivot() { # <rw_root> <ro_root> <dupe?>
463    root=$1
464    {
465        if grep -q overlay /proc/filesystems; then
466            mount -o noatime,lowerdir=/,upperdir=$1 -t overlayfs "overlayfs:$1" /mnt && root=/mnt
467        elif grep -q mini_fo /proc/filesystems; then
468            mount -t mini_fo -o noatime,base=/,sto=$1 "mini_fo:$1" /mnt 2>&- && root=/mnt
469        else
470            mount --bind -o noatime / /mnt
471            mount --bind -o noatime,union "$1" /mnt && root=/mnt
472        fi
473    } || {
474        [ "$3" = "1" ] && {
475        mount | grep "on $1 type" 2>&- 1>&- || mount -o noatime,bind $1 $1
476        dupe $1 $rom
477        }
478    }
479    pivot $root $2
480}
481
482ramoverlay() {
483    mkdir -p /tmp/root
484    mount -t tmpfs -o noatime,mode=0755 root /tmp/root
485    fopivot /tmp/root /rom 1
486}
487
488[ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh
489

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