printMyNameCompartment

printMyNameCompartment.c

@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include <stddef.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+#define USE_LB_SEALED_CAP 1
+
+/**
+* Wrappable function type.
+*/
+typedef void *(cmpt_fun_t)(void* arg);
+
+#if (USE_LB_SEALED_CAP == 1)
+// ...
+#else
+// ...
+#endif
+
+static const cmpt_t *create_cmpt(cmpt_fun_t *target, unsigned stack_pages);
+
+//create a new function that prints a name and pass it as a target function to the create_cmpt f(x)
+// The function prints for example my name is Joseph Kaberuka, this takes just a single argument for example: unused
+
+static void *printMyName(void *unused)
+{
+    // Your name
+    printf("My name is Joseph Kaberuka\n");
+    return NULL;
+}
+
+//create_cmpt function, create a compartment for printMyName and allocate a small amount of memory for the compartment's stack
+
+
+int main(int argc, char *argv[])
+{
+    const cmpt_t *cmpt = create_cmpt(printMyName, 1 /* 1 page should be enough */);
+
+    printf("before...\n");
+    printf("csp: %s\n", cap_to_str(NULL, cheri_csp_get()));
+
+//cmpt_call executes printMyName function within the compartment  
+
+    cmpt_call(cmpt, NULL);
+
+    printf("after...\n");
+    printf("csp: %s\n", cap_to_str(NULL, cheri_csp_get()));
+
+    return 0;
+}