Added basic shared memory support

This will be improved soon. It's very insecure right now.

2 files changed, 20 insertions, 5 deletions

diff --git a/libc/inc/sys.h b/libc/inc/sys.h
index 46a5849..a06a792 100644
--- a/libc/inc/sys.h
+++ b/libc/inc/sys.h
@@ -16,6 +16,8 @@
 enum sys {
 	SYS_LOOP, // To infinity and beyond (debug)!
 	SYS_ALLOC, // Allocate memory
+	SYS_SHALLOC, // Allocate shared memory
+	SYS_SHACCESS, // Access shared memory
 	SYS_FREE, // Free memory
 	SYS_STAT, // Get file information
 	SYS_READ, // Read file
@@ -27,11 +29,11 @@ enum sys {
 	SYS_BOOT, // Boot functions (e.g. reboot/shutdown)
 	SYS_YIELD, // Switch to next process
 	SYS_TIME, // Get kernel time
-	SYS_NET_OPEN, // Open network socket
-	SYS_NET_CLOSE, // Close network socket
-	SYS_NET_CONNECT, // Connect to destination
-	SYS_NET_SEND, // Send to socket
-	SYS_NET_RECEIVE, // Receive data from socket
+	/* SYS_NET_OPEN, // Open network socket */
+	/* SYS_NET_CLOSE, // Close network socket */
+	/* SYS_NET_CONNECT, // Connect to destination */
+	/* SYS_NET_SEND, // Send to socket */
+	/* SYS_NET_RECEIVE, // Receive data from socket */
 };
 
 struct event_keyboard {
@@ -76,6 +78,8 @@ s32 boot(u32 cmd);
 u32 time(void);
 
 void *sys_alloc(u32 size);
+u32 shalloc(u32 size);
+void *shaccess(u32 id);
 void sys_free(void *ptr, u32 size);
 
 static inline u32 getpid(void)
diff --git a/libc/sys.c b/libc/sys.c
index aac2d1e..db31f37 100644
--- a/libc/sys.c
+++ b/libc/sys.c
@@ -83,6 +83,17 @@ void *sys_alloc(u32 size)
 	return (void *)sys1(SYS_ALLOC, (int)size);
 }
 
+u32 shalloc(u32 size)
+{
+	return (u32)sys1(SYS_SHALLOC, (int)size);
+}
+
+void *shaccess(u32 id)
+{
+	return (void *)sys1(SYS_SHACCESS, (int)id);
+}
+
+// TODO: Freeing by ptr + size could be a security risk -> only by address!
 void sys_free(void *ptr, u32 size)
 {
 	sys2(SYS_FREE, (int)ptr, (int)size);