From: Rafał Długołęcki <rafal@dlugolecki.net.pl>
Date: Fri, 20 Jun 2014 19:31:37 +0000 (+0200)
Subject: Initial bootstrap program.
X-Git-Url: https://git.dlugolecki.net.pl/?a=commitdiff_plain;h=8c1fe1f8edbdb17e876546e623bc65e7205c7335;p=wsti_so.git

Initial bootstrap program.
---

diff --git a/Makefile.am b/Makefile.am
index a8c16f5..bcf541c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -4,7 +4,8 @@ ACLOCAL_AMFLAGS = ${ACLOCAL_FLAGS}
 bin_PROGRAMS = \
 	bin/process1 \
 	bin/process2 \
-	bin/process3
+	bin/process3 \
+	bin/bootstrap
 
 bin_process1_SOURCES = \
 	src/process1.c
@@ -14,3 +15,6 @@ bin_process2_SOURCES = \
 
 bin_process3_SOURCES = \
 	src/process3.c
+
+bin_bootstrap_SOURCES = \
+	src/bootstrap.c
diff --git a/src/bootstrap.c b/src/bootstrap.c
new file mode 100644
index 0000000..1df77c1
--- /dev/null
+++ b/src/bootstrap.c
@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+/* strerror, and errno family.. */
+#include <errno.h>
+
+/* exec family.. */
+#include <unistd.h>
+
+/** Number of processes to spawn */
+#define PROCESS_NUMBER 3
+
+char * processes[PROCESS_NUMBER] = {
+	"process1",
+	"process2",
+	"process3"
+};
+
+/**
+ * Bootstrap program used for starting all three main processes.
+ */
+int main(void) {
+
+	pid_t pid;
+	int i = 0;
+	int err = 0;
+
+	for (; i < PROCESS_NUMBER; i++) {
+		fprintf(stderr, "[%s] Forking process %d\n", "bootstrap", i);
+		pid = fork();
+
+		/* If it is child fork */
+		if (pid == 0) {
+			err = execl(processes[i], processes[i], NULL);
+
+			/*
+			 * According to manual, this will only occur
+			 * if there was an error in execl
+			 */
+			if (err == -1) {
+				fprintf(stderr, "[%s] Something went wrong when spawning %s. Error: %s\n",
+					"bootstrap", processes[i], strerror(errno));
+			}
+		}
+	}
+
+	/* All processes should be now spawned. Close bootstrap program. */
+	
+	return 0;
+}
\ No newline at end of file