POTD skeleton #22.

Signed-off-by: lns <matzeton@googlemail.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/src/jail.c b/src/jail.c
new file mode 100644
index 0000000..cd8189a
--- /dev/null
+++ b/src/jail.c
@@ -0,0 +1,32 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#include "jail.h"
+
+
+int jail_init(jail_ctx **ctx, size_t stacksize)
+{
+    assert(ctx);
+    if (stacksize > BUFSIZ)
+        stacksize = BUFSIZ;
+    if (!*ctx)
+        *ctx = calloc(1, sizeof(**ctx));
+    assert(*ctx);
+
+    (*ctx)->stacksize = stacksize;
+    (*ctx)->stack_ptr =
+        (unsigned char *) calloc(1, (*ctx)->stacksize)
+            + (*ctx)->stacksize;
+
+    return 0;
+}
+
+void jail_free(jail_ctx **ctx)
+{
+}
+
+int jail_fork(jail_ctx *ctx)
+{
+    return 0;
+}