Tue, Nov 16, 2004 at 03:38:02PM +0300, Вы(Konstantin Klimchev) написали:
> Сам с собой общаюсь. Похоже на обострение...
>
> Корни проблемы в том, что необходимо отправлять sms при
> каких-либо (заранее описаных) проблемах.
>
> Имеем /dev/ttyUSB0
> c правами root:dialout
> и доступом crw-rw----
>
> Проблему, описанныю в первом посте обошел следующим образом:
> Владельцем /dev/ttyUSB0 сделал пользователя daemon.
>
> А теперь - на сколько это правильно, если это не красиво,
> как сделать красиво:
> - править init-скрипт,
> - менять права на /dev/ttyUSB0
> - запускать от root (но это делать не буду точно)
> - ...
Как-то раз пришлось решать такую проблему(тож sms). Правили init
скрипт. Он в аттаче. Кажется рабочий даже. А вообще mon та еще
штучка..
--
Burchu Sergey.
#!/bin/sh -e
# $Id: init,v 1.7 2001/09/14 02:18:25 roderick Exp $
# These specify the user and group that mon runs as. You can use group
# daemon instead of group shadow if you want to limit its permissions,
# but then it won't be able to authenticate users against the shadow
# password file.
user=daemon
group='shadow dialout'
# Don't let group shadow write to my files.
umask 22
# This specifies mon's configuration file. If this file name ends with
# .m4 it's preprocssed with m4. The shell code after the assignment
# causes this script to use a .m4 version if it exists.
cfg=/etc/mon/mon.cf
[ -f $cfg.m4 ] && cfg=$cfg.m4
# These are the args which are passed to mon. -f tells it to fork and
# run as a daemon, -c just makes use of the config file setting from
# above (notably, so that a .m4 version is picked up).
args="-f -c $cfg"
# You're less likely to need to change any of the others.
script=`basename "$0"`
daemon=/usr/sbin/mon
pid=/var/run/mon/mon.pid
desc='monitor daemon'
name=mon
# Add system dirs for start-stop-daemon.
PATH=$PATH:/sbin:/usr/sbin
[ -f $daemon -a -f $cfg ] || exit 0
# Don't bother if the user hasn't configured the package, there is no
# default configuration but there is a default config file (which just
# contains comments).
egrep -v '^[ ]*$|^#' $cfg >/dev/null || exit 0
warn() {
echo "$script:" "$@" >&2
}
die() {
warn "$@"
exit 1
}
usage() {
[ $# = 0 ] || warn "$@"
warn "usage: \`$script <action>'"
warn "valid actions: start stop restart reload force-reload"
exit 1
}
# I originally used su to start the daemon as user daemon, but ran into
# trouble with the differing requirements of su and secure-su. The GNU
# getopt's troublsome behavior of looking for switches anywhere on the
# command line requires that one use -- if one wants to pass switches
# to the shell, but secure-su doesn't allow the --. One could set
# POSIXLY_CORRECT to prevent this poor getopt_long() behavior, but then
# the sub-command would have that in its environment. In disgust I
# gave up and switched to using Perl.
daemon_run() {
perl -we '
$user = shift;
$group = shift;
if ($group =~ /\s+/)
{
foreach $a (split(/\s+/, $group))
{
defined($gid = getgrnam $a)
or die "Cannot find gid for group $a\n";
if (!defined $fgid) {
$fgid = $gid;
}
$tmp .= "$gid ";
}
chop($tmp);
}
else {
defined($fgid = getgrnam $group)
or die "Cannot find gid for group $group\n";
$tmp = "$fgid $fgid";
}
$) = $tmp;
$( = $fgid;
# if ($( ne "$gid $gid" || $) ne "$gid $gid") {
if ($( ne $tmp || $) ne $tmp) {
die "Error setting group ids, real/effective is now $(/$)\n";
}
defined($uid = getpwnam $user)
or die "Cannot find uid for user $user\n";
$< = $uid;
$> = $uid;
if ($> != $uid || $< != $uid) {
die "Error setting user ids, real/effective is now $</$>\n";
}
exec @ARGV or die "Error running $ARGV[0]: $!\n";
' "$user" "$group" "$@" ||
die "return $? setting ids and running:" "$@"
}
[ $# = 1 ] || usage "wrong number of args (got $# expected 1), args are:" "$@"
action=$1
set -- --pidfile $pid --startas $daemon -- $args
stop_mon() {
running_mon_pid=`cat $pid 2>/dev/null` || true
daemon_is_running() {
[ -f $pid -a /proc/"$running_mon_pid"/exe -ef /usr/bin/perl ]
}
start-stop-daemon --stop --oknodo "$@"
daemon_is_running || return 0
sleep 1
daemon_is_running || return 0
# Wait for the daemon to exit before continuing, so that a subsequent
# start doesn't fail if it happens too soon.
echo -n " [waiting for mon (pid $running_mon_pid) to exit..."
n=0
while daemon_is_running
do
n=`expr $n + 1`
[ $n = 60 ] && die "giving up, mon still hasn't exited"
echo -n .
sleep 1
done
echo -n "]"
}
case x-$action in
x-start)
echo -n "Starting $desc: $name"
daemon_run start-stop-daemon --pidfile $pid --start "$@"
echo .
;;
x-stop)
echo -n "Stopping $desc: $name"
stop_mon "$@"
echo .
;;
x-restart)
echo -n "Restarting $desc: $name"
stop_mon "$@"
daemon_run start-stop-daemon --start "$@"
echo .
;;
x-reload | x-force-reload)
echo "Reloading $desc configuration files."
start-stop-daemon --stop --signal 1 "$@"
;;
*)
usage "invalid action \`$action'"
;;
esac
exit 0
