Initial commit

- create subsystem system using clone syscall, shared memory, shared
  file descriptors
- printk-like logging facility (TODO: console loglevel)
- initcall system (like linux kernel)

TODO: determine license
factors: linker.ld, linux kernel licensing (some ideas are more
  liberally taken rather than paraphrased)

1 files changed, 22 insertions, 0 deletions

diff --git a/init/util.c b/init/util.c
new file mode 100644
index 0000000..1a08234
--- /dev/null
+++ b/init/util.c
@@ -0,0 +1,22 @@
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+void die(const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    vfprintf(stderr, fmt, ap);
+    va_end(ap);
+
+    if(fmt[0] && fmt[strlen(fmt)-1] == ':') {
+        fputc(' ', stderr);
+        perror(NULL);
+    } else {
+        fputc('\n', stderr);
+    }
+
+    exit(1);
+}