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Merge pull request #2 from older/master

Add command line option to daemonize iiid process
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2 parents f924f4f + fdc2ed2 commit 0f6efc26f6331bacf76c76ef1376d3cc6e450418 @hacker committed Feb 14, 2014
Showing with 42 additions and 2 deletions.
  1. +42 −2 src/iiid.cc
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@@ -19,6 +19,7 @@
int main(int argc,char **argv) try {
int port = 59278;
+ bool daemon_mode = false;
while(true) {
static struct option opts[] = {
@@ -27,9 +28,10 @@ int main(int argc,char **argv) try {
{ "version", no_argument, 0, 'V' },
{ "license", no_argument, 0, 'L' },
{ "port", required_argument, 0, 'p' },
+ { "daemon", no_argument, 0, 'd' },
{ NULL, 0, 0, 0 }
};
- int c = getopt_long(argc,argv,"hVLp:",opts,NULL);
+ int c = getopt_long(argc,argv,"hVLp:d",opts,NULL);
if(c==-1) break;
switch(c) {
case 'h':
@@ -42,6 +44,7 @@ int main(int argc,char **argv) try {
" -L, --license show license\n"
" -p <port>, --port=<port> port to listen to\n"
" (you're not likely to ever need it)\n"
+ " -d, --daemon run as daemon\n"
<< std::endl << std::endl;
exit(0);
break;
@@ -61,6 +64,9 @@ int main(int argc,char **argv) try {
exit(1);
}
break;
+ case 'd':
+ daemon_mode = true;
+ break;
default:
std::cerr << "Huh?" << std::endl;
exit(1);
@@ -74,7 +80,7 @@ int main(int argc,char **argv) try {
else
ident = *argv;
openlog(ident,LOG_PERROR|LOG_PID,LOG_DAEMON);
- syslog(LOG_INFO,"Starting iii eye-fi manager");
+ syslog(LOG_INFO,"Starting iii eye-fi manager on port %d", port);
struct stat st;
if(stat(EYEKIN_CONF_DIR,&st) || !S_ISDIR(st.st_mode))
@@ -85,6 +91,40 @@ int main(int argc,char **argv) try {
else
globfree(&g);
+ if(daemon_mode) {
+ pid_t pid, sid;
+
+ /* Fork off the parent process */
+ pid = fork();
+ if (pid < 0) {
+ syslog(LOG_ERR, "Error forking the parent process");
+ exit(EXIT_FAILURE);
+ }
+
+ /* If we got a good PID, then we can exit the parent process. */
+ if (pid > 0) {
+ exit(EXIT_SUCCESS);
+ }
+
+ /* Create a new SID for the child process */
+ sid = setsid();
+ if (sid < 0) {
+ syslog(LOG_ERR, "Error creating a new SID for the child process");
+ exit(EXIT_FAILURE);
+ }
+
+ /* Change the current working directory */
+ if ((chdir("/")) < 0) {
+ syslog(LOG_ERR, "Error changing current working directory to /");
+ exit(EXIT_FAILURE);
+ }
+
+ /* Close out the standard file descriptors */
+ close(STDIN_FILENO);
+ close(STDOUT_FILENO);
+ close(STDERR_FILENO);
+ }
+
eyefiworker().run(port);
closelog();

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