inital commit

main.c

@@ -0,0 +1,47 @@
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <stdbool.h>
+#include <sys/prctl.h>
+#include <stdlib.h>
+
+int main(int argc, char** argv)
+{
+	if(argc < 2)
+	{
+		fprintf(stderr, "A process to execute is required\n");
+		return 1;
+	}
+
+	int ret = prctl(PR_SET_MEMORY_MERGE, 1, 0, 0, 0);
+	if(ret != 0)
+	{
+		fprintf(stderr, "Unable to enable KSM for process: %s\n", strerror(errno));
+		return 2;
+	}
+
+	printf("PR_SET_MEMORY_MERGE set to %u\n", prctl(PR_GET_MEMORY_MERGE, 0, 0, 0, 0));
+
+	pid_t parent_pid = getpid();
+	pid_t pid = fork();
+	if(pid == 0)
+	{
+		printf("PR_SET_MEMORY_MERGE in child is %u\n", prctl(PR_GET_MEMORY_MERGE, 0, 0, 0, 0));
+		execvp(argv[1], argv+1);
+		fprintf(stderr, "Unable exec process: %s\n", strerror(errno));
+		return 3;
+	}
+	else if(pid == -1)
+	{
+		fprintf(stderr, "Unable fork: %s\n", strerror(errno));
+	}
+	else if(pid == -1)
+	{
+		waitpid(pid, NULL, 0);
+	}
+	return 0;
+}
+