原文地址:http://blog.csdn.net/qianguozheng/article/details/27237175
OpenWRT系统升级采用 sysupgrade 这个脚本存放在/sbin/sysupgrade.
-
#!/bin/sh
-
. /lib/functions.sh
-
-
# initialize defaults
-
RAMFS_COPY_BIN="" # extra programs for temporary ramfs root
-
RAMFS_COPY_DATA="" # extra data files
-
export MTD_CONFIG_ARGS=""
-
export INTERACTIVE=0
-
export VERBOSE=1
-
export SAVE_CONFIG=1
-
export SAVE_OVERLAY=0
-
export DELAY=
-
export CONF_IMAGE=
-
export CONF_BACKUP_LIST=0
-
export CONF_BACKUP=
-
export CONF_RESTORE=
-
export NEED_IMAGE=
-
export HELP=0
-
export FORCE=0
-
export TEST=0
-
-
# parse options
-
while [ -n "$1" ]; do
-
case "$1" in
-
-i) export INTERACTIVE=1;;
-
-d) export DELAY="$2"; shift;;
-
-v) export VERBOSE="$(($VERBOSE + 1))";;
-
-q) export VERBOSE="$(($VERBOSE - 1))";;
-
-n) export SAVE_CONFIG=0;;
-
-c) export SAVE_OVERLAY=1;;
-
-b|--create-backup) export CONF_BACKUP="$2" NEED_IMAGE=1; shift;;
-
-r|--restore-backup) export CONF_RESTORE="$2" NEED_IMAGE=1; shift;;
-
-l|--list-backup) export CONF_BACKUP_LIST=1; break;;
-
-f) export CONF_IMAGE="$2"; shift;;
-
-F|--force) export FORCE=1;;
-
-T|--test) export TEST=1;;
-
-h|--help) export HELP=1; break;;
-
-*)
-
echo "Invalid option: $1"
-
exit 1
-
;;
-
*) break;;
-
esac
-
shift;
-
done
-
-
export CONFFILES=/tmp/sysupgrade.conffiles
-
export CONF_TAR=/tmp/sysupgrade.tgz
-
-
export ARGV="$*"
-
export ARGC="$#"
-
-
[ -z "$ARGV" -a -z "$NEED_IMAGE" -o $HELP -gt 0 ] && {
-
cat <<EOF
-
Usage: $0 [<upgrade-option>...] <image file or URL>
-
$0 [-q] [-i] <backup-command> <file>
-
-
upgrade-option:
-
-d <delay> add a delay before rebooting
-
-f <config> restore configuration from .tar.gz (file or url)
-
-i interactive mode
-
-c attempt to preserve all changed files in /etc/
-
-n do not save configuration over reflash
-
-T | --test
-
Verify image and config .tar.gz but do not actually flash.
-
-F | --force
-
Flash image even if image checks fail, this is dangerous!
-
-q less verbose
-
-v more verbose
-
-h | --help display this help
-
-
backup-command:
-
-b | --create-backup <file>
-
create .tar.gz of files specified in sysupgrade.conf
-
then exit. Does not flash an image. If file is '-',
-
i.e. stdout, verbosity is set to 0 (i.e. quiet).
-
-r | --restore-backup <file>
-
restore a .tar.gz created with sysupgrade -b
-
then exit. Does not flash an image. If file is '-',
-
the archive is read from stdin.
-
-l | --list-backup
-
list the files that would be backed up when calling
-
sysupgrade -b. Does not create a backup file.
-
-
EOF
-
exit 1
-
}
-
-
[ -n "$ARGV" -a -n "$NEED_IMAGE" ] && {
-
cat <<-EOF
-
-b|--create-backup and -r|--restore-backup do not perform a firmware upgrade.
-
Do not specify both -b|-r and a firmware image.
-
EOF
-
exit 1
-
}
-
-
# prevent messages from clobbering the tarball when using stdout
-
[ "$CONF_BACKUP" = "-" ] && export VERBOSE=0
-
-
add_uci_conffiles() {
-
local file="$1"
-
( find $(sed -ne '/^[[:space:]]*$/d; /^#/d; p' \
-
/etc/sysupgrade.conf /lib/upgrade/keep.d/* 2>/dev/null) \
-
-type f 2>/dev/null;
-
opkg list-changed-conffiles ) | sort -u > "$file"
-
return 0
-
}
-
-
add_overlayfiles() {
-
local file="$1"
-
find /overlay/etc/ -type f | sed \
-
-e 's,^/overlay/,/,' \
-
-e '\,/META_[a-zA-Z0-9]*$,d' \
-
-e '\,/functions.sh$,d' \
-
-e '\,/[^/]*-opkg$,d' \
-
> "$file"
-
return 0
-
}
-
-
# hooks
-
sysupgrade_image_check="platform_check_image"
-
[ $SAVE_OVERLAY = 0 -o ! -d /overlay/etc ] && \
-
sysupgrade_init_conffiles="add_uci_conffiles" || \
-
sysupgrade_init_conffiles="add_overlayfiles"
-
-
include /lib/upgrade
-
-
do_save_conffiles() {
-
local conf_tar="${1:-$CONF_TAR}"
-
-
[ -z "$(rootfs_type)" ] && {
-
echo "Cannot save config while running from ramdisk."
-
ask_bool 0 "Abort" && exit
-
return 0
-
}
-
run_hooks "$CONFFILES" $sysupgrade_init_conffiles
-
ask_bool 0 "Edit config file list" && vi "$CONFFILES"
-
-
v "Saving config files..."
-
[ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
-
tar c${TAR_V}zf "$conf_tar" -T "$CONFFILES" 2>/dev/null
-
-
rm -f "$CONFFILES"
-
}
-
-
if [ $CONF_BACKUP_LIST -eq 1 ]; then
-
add_uci_conffiles "$CONFFILES"
-
cat "$CONFFILES"
-
rm -f "$CONFFILES"
-
exit 0
-
fi
-
-
if [ -n "$CONF_BACKUP" ]; then
-
do_save_conffiles "$CONF_BACKUP"
-
exit $?
-
fi
-
-
if [ -n "$CONF_RESTORE" ]; then
-
if [ "$CONF_RESTORE" != "-" ] && [ ! -f "$CONF_RESTORE" ]; then
-
echo "Backup archive '$CONF_RESTORE' not found."
-
exit 1
-
fi
-
-
[ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
-
tar -C / -x${TAR_V}zf "$CONF_RESTORE"
-
exit $?
-
fi
-
-
type platform_check_image >/dev/null 2>/dev/null || {
-
echo "Firmware upgrade is not implemented for this platform."
-
exit 1
-
}
-
-
for check in $sysupgrade_image_check; do
-
( eval "$check \"\$ARGV\"" ) || {
-
if [ $FORCE -eq 1 ]; then
-
echo "Image check '$check' failed but --force given - will update anyway!"
-
break
-
else
-
echo "Image check '$check' failed."
-
exit 1
-
fi
-
}
-
done
-
-
if [ -n "$CONF_IMAGE" ]; then
-
case "$(get_magic_word $CONF_IMAGE cat)" in
-
# .gz files
-
1f8b) ;;
-
*)
-
echo "Invalid config file. Please use only .tar.gz files"
-
exit 1
-
;;
-
esac
-
get_image "$CONF_IMAGE" "cat" > "$CONF_TAR"
-
export SAVE_CONFIG=1
-
elif ask_bool $SAVE_CONFIG "Keep config files over reflash"; then
-
[ $TEST -eq 1 ] || do_save_conffiles
-
export SAVE_CONFIG=1
-
else
-
export SAVE_CONFIG=0
-
fi
-
-
if [ $TEST -eq 1 ]; then
-
exit 0
-
fi
-
-
run_hooks "" $sysupgrade_pre_upgrade
-
-
ubus call system upgrade
-
touch /tmp/sysupgrade
-
-
if [ ! -f /tmp/failsafe ] ; then
-
kill_remaining TERM
-
sleep 3
-
kill_remaining KILL
-
fi
-
-
if [ -n "$(rootfs_type)" ]; then
-
v "Switching to ramdisk..."
-
run_ramfs '. /lib/functions.sh; include /lib/upgrade; do_upgrade'
-
else
-
do_upgrade
-
fi
源码自己看吧,shell写的东西,我现在也是一知半解,但是不妨碍我解决问题,参照某某某的固件,
在rc.local里面添加了
仿照添加后,不起作用。
研习正常固件跑起来的wifi,一般是,
/tmp/RT2860.dat文件存在
/etc/Wireless/RT2860/RT2860.dat 为/tmp/RT2860.dat的软链接
rt2860ap_v2.ko存在
ifconfig 发下ra0也不存在
lsmod查看,ko被引用次数为0.也就是说没有用,重启系统也不起作用。恢复出厂设置就OK了。甚是费解!
初步断定: ra0没有起来,软连接不存在。可能是wireless启动不成功的原因,至于问题究竟出在哪里,我目前还是没有解决。
但是我找到了解决方案,当然这只是临时的,为什么升级后这些数据不在了,需要进一步研究。
对比无线起不来的情况,发现/etc/Wireless/RT2860/RT2860.dat 不存在。就是说软连接可能是在升级过程中转移到另一个临时文件夹,而在系统重启的时候并未建立此文件,因为系统的默认配置/etc/config/wiereless文件已经存在。
这也许就是root cause,还需验证,我的解决方案是,在rc.local下判断软连接是否存在,不存在则建立此软连接,然后ifup -a
-
#detect_rt2860v2函数用于检测是否存在驱动
-
detect_rt2860v2() {
-
local i=-1
-
#判断系统是否存在rt2860v2_ap,不存在则退出
-
cd /sys/module/
-
[ -d rt2860v2_ap ] || return
-
<span style="color:#FF0000;">#检测系统存在多少个wifi接口,
-
while grep -qs "^ *ra$((++i)):" /proc/net/dev; do
-
config_get type ra${i} type
-
[ "$type" = rt2860v2 ] && continue
-
span>
-
<span style="color:#006600;">#检查并创建WiFi驱动配置链接
-
[ -f /etc/Wireless/RT2860/RT2860.dat ] || {
-
mkdir -p /etc/Wireless/RT2860/
-
ln -s /tmp/RT2860.dat /etc/Wireless/RT2860/RT2860.dat
-
}
-
span>
-
first_enable
-
-
cat <<EOF
-
config wifi-device ra${i}
-
option type rt2860v2
-
option mode 9
-
option channel auto
-
option txpower 100
-
option ht 20+40
-
option country US
-
# REMOVE THIS LINE TO ENABLE WIFI:
-
option disabled 0
-
config wifi-iface
-
option device ra${i}
-
option network lan
-
option mode ap
-
option ssid PandoraBox${i#0}_$(cat /sys/class/net/ra${i}/address|awk -F ":" '{print $4""$5""$6 }'| tr a-z A-Z)
-
option encryption none
-
EOF
-
-
ifconfig ra0 down
-
done
-
-
}
还需继续研究下启动过程,不然这个问题还是不能真像大白,虽然以上分析其实已经给出了答案。
阅读(2735) | 评论(0) | 转发(0) |