From 463736887fbb6439fe5e676f6fd7990adc6bb727 Mon Sep 17 00:00:00 2001
From: Michal Idziorek <m.i@gmx.at>
Date: Thu, 23 Oct 2014 08:41:34 +0200
Subject: added execve syscall

---
 kernel/syscalls.c | 46 ++++++++++++++++++++++------------------------
 1 file changed, 22 insertions(+), 24 deletions(-)

(limited to 'kernel/syscalls.c')

diff --git a/kernel/syscalls.c b/kernel/syscalls.c
index 0fe1542..564a604 100644
--- a/kernel/syscalls.c
+++ b/kernel/syscalls.c
@@ -6,6 +6,7 @@
 //
 int syscall_write(int file, char *buf, int len)
 {
+    // ALL output to stdout
     for(int i=0;i<len;i++)
     {
 	PutConsoleChar(buf[i],0b1111111111000000);
@@ -16,21 +17,25 @@ int syscall_write(int file, char *buf, int len)
 int syscall_read(int file, char *buf, int len)
 {
 
-    char c;
-
-    while(1)
+    // stdin
+    if(file==1)
     {
-	asm("cli");
-	bool ret=ringbuffer_get(&c);
-	asm("sti");
-	
-	if(ret)
+    
+	char c;
+
+	while(1)
 	{
-	    *buf=c;
-	    return 1;
-	}
+	    asm("cli");
+	    bool ret=ringbuffer_get(&c);
+	    asm("sti");
+	    
+	    if(ret)
+	    {
+		*buf=c;
+		return 1;
+	    }
 
-//	if(ret)	log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"read kb buffer: %d",c);
+	}
     }
 
 }
@@ -39,19 +44,12 @@ int syscall_readdir(const char *name,fs_dirent *dirs,int max)
 {
     return fs_readdir(name,dirs,max);
 }
-//
 
-int example_syscall(int x,int y)
+int syscall_execve(char *name, char **argv, char **env)
 {
-//    log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"example syscall called with %d + %d",x,y);
-    return x+y;
+    ext2_inode_content(0x80800,name,0x100000,0x100000);
 
+    // autorun "user-space" prog
+    asm("push $0x100000");
+    asm("ret");
 }
-
-int example_syscall_2(int x,int y)
-{
- //   log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"example syscall 2 called with %d - %d",x,y);
-    return x-y;
-}
-
-//
-- 
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