| -rw-r--r-- | NEWS.xml | 2 | ||||
| -rw-r--r-- | man/dudki.8.in | 11 | ||||
| -rw-r--r-- | src/dudki.cc | 20 |
3 files changed, 29 insertions, 4 deletions
@@ -1,14 +1,14 @@ <?xml version="1.0" encoding="us-ascii"?> <news> <version version="0.2" date="July 23rd, 2004"> - <ni>now dudki sends signals to the processes being monitored from the command line</ni> + <ni>now dudki sends arbitrary signals to the processes being monitored from the command line</ni> </version> <version version="0.1" date="July 21st, 2004"> <ni><kbd>initgroups()</kbd> called before executing <kbd>RestartCommand</kbd></ni> <ni>more civilized way of restarting on <kbd>SIGHUP</kbd></ni> <ni>minor changes to build process</ni> </version> <version version="0.0" date="July 11th, 2004"> <ni>Initial release</ni> </version> </news> diff --git a/man/dudki.8.in b/man/dudki.8.in index 05db733..be60f53 100644 --- a/man/dudki.8.in +++ b/man/dudki.8.in @@ -1,40 +1,42 @@ -.TH dudki 8 "June 9th, 2004" "dudki(8)" "Klever Group (http://www.klever.net/)" +.TH dudki 8 "July 23rd, 2004" "dudki(8)" "Klever Group (http://www.klever.net/)" .hla en .ds longopt @HAVE_GETOPT_LONG@ .SH NAME -dudki \- a process monitoring daemon +dudki \- a process maintenance daemon .SH SYNOPSYS \fBdudki\fR [\fB-h\fR] .if \*[longopt] [\fB--help\fR] [\fB--usage\fR] [\fB-V\fR] .if \*[longopt] [\fB--version\fR] [\fB-L\fR] .if \*[longopt] [\fB--license\fR] [\fB-f\fR \fIconfigfile\fR] .if \*[longopt] [\fB--config=\fR\fIconfigfile\fR] [\fB-k\fR] .if \*[longopt] [\fB--kill\fR] [\fB-r\fR] .if \*[longopt] [\fB--reload\fR] [\fB-c\fR] .if \*[longopt] [\fB--check\fR] +[\fB-s\fR \fIsignum\fR] +.if \*[longopt] [\fB--signal=\fR\fIsignum\fR] [\fB-e\fR] .if \*[longopt] [\fB--ensure\fR] [\fB-t\fR] .if \*[longopt] [\fB--test\fR] [\fI<process-list>\fR] .SH DESCRIPTION dudki daemon is designed to run in the background and periodically check if certain processes specified in the configuration file are running. If a process is detected as dead dudki tries to restart it using the command line specified in the configuration file and notifies the specified contact (currently only via email). .SH OPTIONS @@ -42,32 +44,37 @@ the specified contact (currently only via email). .ie \*[longopt] \fB-f\fR \fIconfigfile\fR, \fB--config=\fR\fIconfigfile\fR .el \fB-f\fR \fIconfigfile\fR Specify the configuration file to use (default is \fI@sysconfdir@/dudki.conf\fR). .TP .ie \*[longopt] \fB-k\fR, \fB--kill\fR .el \fB-k\fR Stop the running instance by sending the \fBSIGTERM\fR signal. If no process name specified on the command line, dudki kills his own running instance. .TP .ie \*[longopt] \fB-r\fR, \fB--reload\fR .el \fB-r\fR Reload the running instance by sending the \fBSIGHUP\fR signal. Like with \fB-k\fR, if no process name specified on the command line, dudki sends \fBSIGHUP\fR to his own running instance. .TP +.ie \*[longopt] \fB-s\fR \fIsignum\fR, \fB--signal=\fR\fIsignum\fR +.el \fB-s\fR \fIsignum\fR +Send arbitrary signal to the names processes (or self, but it doesn't make much +sense). +.TP .ie \*[longopt] \fB-c\fR, \fB--check\fR .el \fB-c\fR Check if dudki is running. Exit with non-zero status if not. The same target rules as in \fB-k\fR and \fB-r\fR apply here. .TP .ie \*[longopt] \fB-e\fR, \fB--ensure\fR .el \fB-e\fR Ensure that dudki is running. Load, if not. Useful for running as a cron job once in a while. If the daemon is running runs quietly providing no output. .TP .ie \*[longopt] \fB-t\fR, \fB--test\fR .el \fB-t\fR Check the syntax of configuration file and exit. .TP .ie \*[longopt] \fB-h\fR, \fB--help\fR, \fB--usage\fR diff --git a/src/dudki.cc b/src/dudki.cc index e91ad5e..9562079 100644 --- a/src/dudki.cc +++ b/src/dudki.cc @@ -1,19 +1,20 @@ #include <unistd.h> #include <signal.h> #include <syslog.h> +#include <errno.h> #include <iostream> #include <fstream> #include <stdexcept> using namespace std; #include "configuration.h" #include "util.h" #include "config.h" #ifdef HAVE_GETOPT_H # include <getopt.h> #endif #ifndef DEFAULT_CONF_FILE # define DEFAULT_CONF_FILE "/etc/dudki.conf" #endif @@ -55,81 +56,85 @@ void signal_self(const configuration& config,int signum) { int main(int argc,char **argv) { try { _argv = new char*[argc+1]; if(!_argv) throw runtime_error("memory allocation problem at the very start"); memmove(_argv,argv,sizeof(*_argv)*(argc+1)); string config_file = DEFAULT_CONF_FILE; enum { op_default, op_work, op_signal, op_ensure, op_test } op = op_default; int op_signum = 0; while(true) { -#define SHORTOPTSTRING "f:hVLrkcet" +#define SHORTOPTSTRING "f:hVLrkcets:" #ifdef HAVE_GETOPT_LONG static struct option opts[] = { { "help", no_argument, 0, 'h' }, { "usage", no_argument, 0, 'h' }, { "version", no_argument, 0, 'V' }, { "license", no_argument, 0, 'L' }, { "config", required_argument, 0, 'f' }, { "kill", no_argument, 0, 'k' }, { "reload", no_argument, 0, 'r' }, + { "signal", required_argument, 0, 's' }, { "check", no_argument, 0, 'c' }, { "ensure", no_argument, 0, 'e' }, { "test", no_argument, 0, 't' }, { NULL, 0, 0, 0 } }; int c = getopt_long(argc,argv,SHORTOPTSTRING,opts,NULL); #else /* !HAVE_GETOPT_LONG */ int c = getopt(argc,argv,SHORTOPTSTRING); #endif /* /HAVE_GETOPT_LONG */ if(c==-1) break; switch(c) { case 'h': cerr << PHEADER << endl << PCOPY << endl << endl << " " << argv[0] << " [options] [processes]" << endl << endl << #ifdef HAVE_GETOPT_LONG " -h, --help\n" " --usage display this text\n" " -V, --version display version number\n" " -L, --license show license\n" " -f filename, --config=filename\n" " specify the configuration file to use\n" "\n" " -k, --kill stop running instance (send SIGTERM)\n" " -r, --reload reload running instance (send SIGHUP)\n" + " -s signum, --signal=signum\n" + " send the specified signal to the running process\n" " -c, --check check if the process is running\n" " (the above commands operate on dudki itself if no\n" " process name has been specified)\n" " -e, --ensure ensure that dudki is running\n" " -t, --test test configuration file and exit" #else /* !HAVE_GETOPT_LONG */ " -h display this text\n" " -V display version number\n" " -L show license\n" " -f filename specify the configuration file to use\n" "\n" " -k stop running instance (send SIGTERM)\n" " -r reload running instance (send SIGHUP)\n" + " -s signum send the specified signal to the running process\n" " -c check if the process is running\n" " (the above commands operate on dudki itself if no\n" " process name has been specified)\n" " -e ensure that dudki is running\n" " -t test configuration file and exit" #endif /* /HAVE_GETOPT_LONG */ << endl; exit(0); break; case 'V': cerr << VERSION << endl; exit(0); break; case 'L': extern const char *COPYING; cerr << COPYING << endl; @@ -160,32 +165,45 @@ int main(int argc,char **argv) { op = op_signal; op_signum = 0; break; case 'e': if(op!=op_default) { cerr << "Can't obey two or more orders at once" << endl; exit(1); } op = op_ensure; break; case 't': if(op!=op_default) { cerr << "Can't obey two or more orders at once" << endl; exit(1); } op = op_test; break; + case 's': + if(op!=op_default) { + cerr << "Can't obey two or more orders at once" << endl; + exit(1); + } + op = op_signal; + errno = 0; + op_signum = strtol(optarg,NULL,0); + if(errno) { + cerr << "Can't obtain the signal value" << endl; + exit(1); + } + break; default: cerr << "Huh??" << endl; exit(1); break; } } const char *sid = *argv; const char *t; while(t = index(sid,'/')) { sid = t; sid++; } openlog(sid,LOG_CONS|LOG_PERROR|LOG_PID,LOG_DAEMON); configuration config; config.parse(config_file); switch(op) { case op_test: |