Patch from tilman2: Open PID file with O_EXCL

[umurmur.git] / src / main.c

diff --git a/src/main.c b/src/main.c
index 8c5febd6fb742b291c3d7e1e32ea9ac816ae1dc4..1b92f50797e931a0807de2ed5f91548844ec9304 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -60,11 +60,11 @@ void lockfile(const char *pidfile)
        int lfp;
        char str[16];
        
-       lfp = open(pidfile, O_RDWR|O_CREAT, 0640);
+       lfp = open(pidfile, O_RDWR|O_CREAT|O_EXCL, 0640);
        
        if (lfp < 0)
                Log_fatal("Cannot open PID-file %s for writing", pidfile);
-       sprintf(str,"%d\n", getpid());
+       snprintf(str,16,"%d\n", getpid());
        write(lfp, str, strlen(str)); /* record pid to lockfile */
        Log_info("PID-file: %s", pidfile);
 }
@@ -130,7 +130,7 @@ void printhelp()
 {
        printf("uMurmur version %s. Mumble protocol %d.%d.%d\n", UMURMUR_VERSION, PROTVER_MAJOR, PROTVER_MINOR, PROTVER_PATCH);
        printf("Usage: umurmurd [-d] [-p <pidfile>] [-c <conf file>] [-h]\n");
-       printf("       -d             - Do not deamonize\n");
+       printf("       -d             - Do not daemonize\n");
        printf("       -p <pidfile>   - Write PID to this file\n");
        printf("       -c <conf file> - Specify configuration file\n");
 #ifdef _POSIX_PRIORITY_SCHEDULING