rewrite init to restart failed processes, add file renaming, directory creation, directory renaming, directory removal, add process killing, unify shells, readme changes.

code/init/init.c

@@ -53,23 +53,37 @@ void _start(const char* args)
     uint32_t h = 0;
     uint32_t s = 0;
 
-    SysDebugPrint("[init] starting\n");
-    s = SysCreateProcess(args, &h, NULL);
-    if (s != STATUS_SUCCESS) {
-        SysDebugPrint("[init] FATAL: failed to start!\n");
-        char buffer[12];
-        itoa(s, buffer);
-        SysDebugPrint(buffer); SysDebugPrint("\n");
-        SysExitProcess(1);
+    for (;;) {
+        SysDebugPrint("[init] starting\n");
+        s = SysCreateProcess(args, &h, NULL);
+        if (s != STATUS_SUCCESS) {
+            SysDebugPrint("[init] FATAL: failed to start!\n");
+            char buffer[12];
+            itoa(s, buffer);
+            SysDebugPrint(buffer);
+            SysDebugPrint("\n");
+            SysExitProcess(1);
+        }
+
+        SysDebugPrint("[init] waiting\n");
+        s = SysWaitForProcess(h);
+        if (s != STATUS_SUCCESS)
+            SysDebugPrint("[init] WARNING: SysWaitForProcess returned error\n");
+
+        int exitCode = 0;
+        if (SysGetProcessExitCode(h, &exitCode) != STATUS_SUCCESS) {
+            SysDebugPrint("[init] WARNING: failed to read exit code\n");
+            exitCode = 1;
+        }
+
+        SysCloseHandle(h);
+
+        if (exitCode == 0)
+            break;
+
+        SysDebugPrint("[init] child crashed, restarting\n");
     }
- 
-    SysDebugPrint("[init] waiting\n");
-    s = SysWaitForProcess(h);
-    if (s != STATUS_SUCCESS)
-        SysDebugPrint("[init] WARNING: SysWaitForProcess returned error\n");
-    SysCloseHandle(h);
 
     SysDebugPrint("[init] done\n");
-
     SysExitProcess(0);
 }