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| author | Changqing Li <changqing.li@windriver.com> | 2019-04-30 14:56:26 +0800 |
|---|---|---|
| committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2019-06-19 14:46:07 +0100 |
| commit | 88c2fb4a0c47e759d7225cfaf574c7abdc6b1c44 (patch) | |
| tree | f9d4041d73da007cf37d996f6ab30f0f399e7712 | |
| parent | 22e0692898c3e7ceedc8eb5ff4ec8e0b9c340b2d (diff) | |
| download | update-rc.d-88c2fb4a0c47e759d7225cfaf574c7abdc6b1c44.tar.gz update-rc.d-88c2fb4a0c47e759d7225cfaf574c7abdc6b1c44.tar.bz2 update-rc.d-88c2fb4a0c47e759d7225cfaf574c7abdc6b1c44.zip | |
update-rc.d: support enable/disable options
Add support of enable/disable options, refer
https://manpages.debian.org/wheezy/sysv-rc/update-rc.d.8.en.html
With support of these options, the usr can never change an existing
configuration even after upgrading a package. The program will only
install links if none are present, otherwise, it will keep
the previous configuration.
preinst in update-rc.d.bbclass will delete all the links under
rcrunlevel.d, this behavior now conflicts with enable/disable
options. so remove preinst from the update-rc.d.bbclass
[Yocto 12955]
Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
| -rw-r--r-- | update-rc.d | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/update-rc.d b/update-rc.d index e07cf85..a7fb7bc 100644 --- a/update-rc.d +++ b/update-rc.d @@ -27,6 +27,7 @@ usage() usage: update-rc.d [-n] [-f] [-r <root>] <basename> remove update-rc.d [-n] [-r <root>] [-s] <basename> defaults [NN | sNN kNN] update-rc.d [-n] [-r <root>] [-s] <basename> start|stop NN runlvl [runlvl] [...] . + update-rc.d [-n] [-r <root>] [-s] <basename> enable|disable [S|2|3|4|5] -n: not really -f: force -v: verbose @@ -101,6 +102,53 @@ makelinks() done } +# function to disable/enable init script link of one run level +# $1 should be K/S, means to disable/enable +# $2 means which run level to disable/enable +renamelink() +{ + local oldstartstop newstartstop lev oldnn newnn + if [ "x$1" = "xS" ]; then + oldstartstop="K" + newstartstop="S" + else + oldstartstop="S" + newstartstop="K" + fi + + lev=$2 + # modifies existing runlevel links for the script /etc/init.d/name by renaming start links to stop link + # or stop link to start link with a sequence number equal to the difference of 100 minus the original sequence number. + if ls ${etcd}${lev}.d/${oldstartstop}*${bn} >/dev/null 2>&1; then + oldnn=`basename ${etcd}${lev}.d/${oldstartstop}*${bn}|cut -c2-3` + newnn=$[100-$oldnn] + [ $verbose -eq 1 ] && echo "rename ${etcd}${lev}.d/${oldstartstop}${oldnn}${bn} -> ${etcd}${lev}.d/${newstartstop}${newnn}${bn}" + if [ $notreally -eq 0 ];then + mv ${etcd}${lev}.d/${oldstartstop}${oldnn}${bn} ${etcd}${lev}.d/${newstartstop}${newnn}${bn} + fi + if [ $dostart -eq 1 ] && [ $newstartstop = "S" ] && [ $lev = $RUNLEVEL ]; then + $fn start || true + fi + fi + +} + +# function to disable/enable init script link +# $1 should be K/S, means to disable/enable +# $2 run level [S|2|3|4|5], optional, If no start runlevel is +# specified after the disable or enable keywords +# the script will attempt to modify links in all start runlevels +renamelinks() +{ + if [ $# -eq 2 ]; then + renamelink $1 $2 + else + for i in 2 3 4 5 S; do + renamelink $1 $i + done + fi +} + while [ $# -gt 0 ]; do case $1 in -n) notreally=1 @@ -221,6 +269,13 @@ case $1 in ;; start | stop) + if [ $# -lt 4 ] + then + echo "Not enough arguments" + usage + exit 1 + fi + while [ $# -gt 0 ]; do if [ $1 = "start" ]; then letter=S @@ -251,6 +306,32 @@ case $1 in makelinks ;; + enable | disable) + if [ $1 = "enable" ]; then + letter=S + elif [ $1 = "disable" ]; then + letter=K + else + usage + exit 1 + fi + shift + # + if [ $# -gt 0 ] + then + case $1 in + S|2|3|4|5) + renamelinks $letter $1 + ;; + *) + usage + exit 1 + ;; + esac + else + renamelinks $letter + fi + ;; *) usage exit 1 |