From bd7230debadfd090e7ccba20376e80611d239bd5 Mon Sep 17 00:00:00 2001
From: Jonas Gunz <himself@jonasgunz.de>
Date: Tue, 9 Apr 2019 19:20:23 +0200
Subject: Stuff

---
 .gitmodules |  3 +++
 clean.sh    |  2 +-
 init/init.c | 79 ++++++++++++++++++++++++++++++++++++++++++++++++-------------
 linux       |  1 +
 packroot.sh |  7 ++++--
 start.sh    |  2 +-
 6 files changed, 74 insertions(+), 20 deletions(-)
 create mode 100644 .gitmodules
 create mode 160000 linux

diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..2902d5b
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "linux"]
+	path = linux
+	url = git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
diff --git a/clean.sh b/clean.sh
index 8789bf8..217c8c8 100755
--- a/clean.sh
+++ b/clean.sh
@@ -3,6 +3,6 @@
 cd init
 make clean
 cd ../root
-rm -df *
+rm -df init
 cd ..
 rm -df initramfs.cpio.gz
diff --git a/init/init.c b/init/init.c
index 090dfe2..a87930b 100644
--- a/init/init.c
+++ b/init/init.c
@@ -1,27 +1,47 @@
 #include <stdio.h>
+#include <errno.h>
+#include <string.h>
 #include <unistd.h>
 #include <stdlib.h>
+#include <stdarg.h>
 #include <sys/types.h>
 #include <poll.h>
 
-int run_start(char* _prog)
+#include <dirent.h>
+
+
+//Needs NULL as last arg!!
+int run_start(char* _prog, char* _args[])
 {
 	pid_t pid = fork();
 
 	if( pid < 0 )
 		return 1;
 	else if (pid == 0)
+	{
+		//wait(0);
 		return 0;
+	}
+
+	setsid();
+	if(fork())
+		exit(0);
+
+	close(STDOUT_FILENO);
+	close(STDIN_FILENO);
+	close(STDERR_FILENO);
 
-	execl(_prog, _prog, NULL);
+	execv(_prog, _args);
+
+	exit(1);
 }
 
-int run_stdio(char* _prog)
-{
-	
+//Need NULL as last arg!!
+int run_stdio(char* _prog, const char* _args[])
+{	
 	int fork_pipe_out[2];
 	int fork_pipe_in [2];
-	pid_t pid = 0;
+	pid_t pid;
 
 	if(pipe(fork_pipe_out) == -1)
 		return 1;
@@ -34,18 +54,22 @@ int run_stdio(char* _prog)
 
 	if (pid == 0)
 	{
+		//replace STDIO
 		dup2(fork_pipe_out[1], STDOUT_FILENO);
 		dup2(fork_pipe_in [0], STDIN_FILENO );
 		close (fork_pipe_out[0]);
 		close (fork_pipe_in [1]);
-		
-		execl(_prog, _prog, NULL);
 
-		return 3;
+		execv(_prog, _args);
+
+		//Error handling
+		int err = errno;
+		printf("Fuckup %i: %s\n", err, strerror(err));
+
+		exit(1);
 	}
 	else
 	{
-		printf("asdf\n");
 		close(fork_pipe_out[1]);
 		close(fork_pipe_in [0]);
 		
@@ -57,7 +81,7 @@ int run_stdio(char* _prog)
 		fds[1].fd = fork_pipe_out[0];
 		fds[1].events = POLLIN;
 
-		while(1)
+		while(1)//Check for data while pipe is open
 		{
 			int timeout = 1; //Timeout msecs
 			ret = poll(fds, 2, timeout);
@@ -73,28 +97,51 @@ int run_stdio(char* _prog)
 
 			if(fds[0].revents & POLLIN) //STDIN_FILENO
 			{
-				printf("a\n");
 				nbytes = read(STDIN_FILENO, buffer, sizeof(buffer));
 				write(fork_pipe_in[1], buffer, nbytes);
-				write(fork_pipe_in[1], "\n", 1);
+				//write(fork_pipe_in[1], "\n", 1);
 				
 			}
 			if(fds[1].revents & POLLIN) //PIPE
 			{
-				printf("b\”");
 				nbytes = read(fork_pipe_out[0], buffer, sizeof(buffer));
 				write(STDOUT_FILENO, buffer, nbytes);
-				write(STDOUT_FILENO, "\n", 1);
+				//write(STDOUT_FILENO, "\n", 1);
 			}
 		}
 		wait(0);	
 	}
 }
 
+int exists(const char *fname)
+{
+    FILE *file;
+    if ((file = fopen(fname, "r")))
+    {
+        fclose(file);
+        return 1;
+    }
+    return 0;
+}
+
 int main(int argc, char* argv[])
 {
 	printf("MegumInit explosion!\n");
-	run_stdio("yes");
+
+	//char* arg[] = {"/bin/bash" ,(char*)0};
+
+	//run_start(arg[0], arg);
+	
+	char* arg2[] = {"/bin/toybox", "echo", "/test.asdf", NULL};
+
+	run_start(arg2[0], arg2);
+
+	sleep(2);
+	
+	printf("%i\n", exists("/test.asdf"));
+	printf("\nEND\n");
+
+	sleep(99999);
 
 	return 0;
 }
diff --git a/linux b/linux
new file mode 160000
index 0000000..79a3aaa
--- /dev/null
+++ b/linux
@@ -0,0 +1 @@
+Subproject commit 79a3aaa7b82e3106be97842dedfd8429248896e6
diff --git a/packroot.sh b/packroot.sh
index b9a6572..2447128 100755
--- a/packroot.sh
+++ b/packroot.sh
@@ -1,5 +1,8 @@
 #!/bin/bash	
 
-cd root
-find . -print -depth | cpio -ov -H newc > ../initramfs.cpio.gz
+cd init
+make build copy
+cd ..
 
+cd root
+find . | cpio -o -H newc | gzip > ../initramfs.cpio.gz
diff --git a/start.sh b/start.sh
index f26c99b..51b0d2a 100755
--- a/start.sh
+++ b/start.sh
@@ -1,4 +1,4 @@
 #!/bin/bash
 
-screen qemu-system-x86_64 -nographic -no-reboot -kernel bzImage -initrd initramfs.cpio.gz -m 256M -append "console=ttyS0 panic=1"
+screen qemu-system-x86_64 -nographic -no-reboot -kernel bzImage -initrd initramfs.cpio.gz -m 256M -append "console=ttyS0 panic=20"
 
-- 
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