From c2c03f41e078481921bad82487eded0fc51ebb59 Mon Sep 17 00:00:00 2001
From: Michal Idziorek <m.i@gmx.at>
Date: Tue, 2 Dec 2014 01:02:49 +0100
Subject: further work on fork and friends

---
 userspace/foolshell.c | 13 ++++++++++++-
 userspace/init.c      | 15 +++++++--------
 2 files changed, 19 insertions(+), 9 deletions(-)

(limited to 'userspace')

diff --git a/userspace/foolshell.c b/userspace/foolshell.c
index 78ba327..7d2291e 100644
--- a/userspace/foolshell.c
+++ b/userspace/foolshell.c
@@ -109,7 +109,7 @@ int process(char *buf)
 
     if(!strcmp(command,"help"))
     {
-	puts("foolshell: supported built-in commands: 'help', 'echo [string]', 'malloc [bytes]', 'free [address]', 'getenv [var]', 'putenv/setenv [var] [val]', 'env' 'cd [dir]'");
+	puts("foolshell: supported built-in commands: 'help', 'echo [string]', 'malloc [bytes]', 'free [address]', 'getenv [var]', 'putenv/setenv [var] [val]', 'env' 'cd [dir]', 'exit'");
     }
     else if(!strcmp(command,"cd"))
     {
@@ -172,6 +172,11 @@ int process(char *buf)
 	
 	setenv("PWD",buf,1);
 
+    }
+    else if(!strcmp(command,"exit"))
+    {
+	exit(1);
+
     }
     else if(!strcmp(command,"echo"))
     {
@@ -215,12 +220,18 @@ int process(char *buf)
 	if(pid!=0)
 	{
 	    printf("new task pid: %i \n",pid);
+	}
+	if(pid==0)
+	{
 	    char buf[256];
 	    sprintf(buf,"%s/%s",getenv("PATH"),token[0]);
+	    sprintf(buf,"%s/%s","/bin",token[0]);
 	    execve(buf,token,environ);
 	    puts("foolshell: command not found");
 	    exit(1);
 	}
+	int status;
+	wait(&status);
 
     }
     return 0;
diff --git a/userspace/init.c b/userspace/init.c
index fd562a9..8c3bcd7 100644
--- a/userspace/init.c
+++ b/userspace/init.c
@@ -1,21 +1,20 @@
+
 int main(int argc, char **argv)
 {
     int pid=fork();
 
-    if(pid!=0)
+    if(pid==0)
     {
-	printf("fool-init: forked child (pid: %i) spawning a Fools Shell\n",pid);
 	execve("/bin/foolshell",0,0);
-
     }
     else
     {
-	// TODO: wait for child and respawn shell if needed!
-	volatile int i=0;
-	while(1)
-	{
+	printf("fool-init: forked child (pid: %i) spawning a Fools Shell\n",pid);
+	int status;
+	int pid_ret=wait(&status);
+	puts("child state has changed!");
+	execve("/bin/init",0,0);
 
-	}
     }
     return 0;
 }
-- 
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