Merge branch 'jc/diff'

diff --git a/daemon.c b/daemon.c
index 01ccda33ea97dd62c00e6cfd63734fe39182f4ce..810837f0c4b8296ce762441c80527efdb6c9c3b6 100644 (file)
--- a/daemon.c
+++ b/daemon.c
@@ -19,7 +19,7 @@ static const char daemon_usage[] =
 "git-daemon [--verbose] [--syslog] [--inetd | --port=n] [--export-all]\n"
 "           [--timeout=n] [--init-timeout=n] [--strict-paths]\n"
 "           [--base-path=path] [--user-path | --user-path=path]\n"
-"           [--reuseaddr] [directory...]";
+"           [--reuseaddr] [--detach] [--pid-file=file] [directory...]";
 
 /* List of acceptable pathname prefixes */
 static char **ok_paths = NULL;
@@ -674,6 +674,33 @@ static void sanitize_stdfds(void)
                close(fd);
 }
 
+static void daemonize(void)
+{
+       switch (fork()) {
+               case 0:
+                       break;
+               case -1:
+                       die("fork failed: %s", strerror(errno));
+               default:
+                       exit(0);
+       }
+       if (setsid() == -1)
+               die("setsid failed: %s", strerror(errno));
+       close(0);
+       close(1);
+       close(2);
+       sanitize_stdfds();
+}
+
+static void store_pid(const char *path)
+{
+       FILE *f = fopen(path, "w");
+       if (!f)
+               die("cannot open pid file %s: %s", path, strerror(errno));
+       fprintf(f, "%d\n", getpid());
+       fclose(f);
+}
+
 static int serve(int port)
 {
        int socknum, *socklist;
@@ -689,6 +716,8 @@ int main(int argc, char **argv)
 {
        int port = DEFAULT_GIT_PORT;
        int inetd_mode = 0;
+       const char *pid_file = NULL;
+       int detach = 0;
        int i;
 
        /* Without this we cannot rely on waitpid() to tell
@@ -753,6 +782,15 @@ int main(int argc, char **argv)
                        user_path = arg + 12;
                        continue;
                }
+               if (!strncmp(arg, "--pid-file=", 11)) {
+                       pid_file = arg + 11;
+                       continue;
+               }
+               if (!strcmp(arg, "--detach")) {
+                       detach = 1;
+                       log_syslog = 1;
+                       continue;
+               }
                if (!strcmp(arg, "--")) {
                        ok_paths = &argv[i+1];
                        break;
@@ -785,7 +823,13 @@ int main(int argc, char **argv)
                return execute(peer);
        }
 
-       sanitize_stdfds();
+       if (detach)
+               daemonize();
+       else
+               sanitize_stdfds();
+
+       if (pid_file)
+               store_pid(pid_file);
 
        return serve(port);
 }