Split ins_rm_mod

kernel_module/test/README.md

@@ -7,3 +7,6 @@ Userland C programs used to test our kernel module.
 C programs require cross compiling, but give us more control over system calls.
 
 These programs can also be compiled and used on host.
+
+1. [myinsmod](myinsmod.c)
+1. [myrmmod](myrmmod.c)

kernel_module/test/myinsmod.c

@@ -1,9 +1,4 @@
-/*
-http://stackoverflow.com/questions/5947286/how-can-linux-kernel-modules-be-loaded-from-c-code/38606527#38606527
-*/
-
 #define _GNU_SOURCE
-#include <assert.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <sys/stat.h>
@@ -13,14 +8,21 @@ http://stackoverflow.com/questions/5947286/how-can-linux-kernel-modules-be-loade
 #include <stdlib.h>
 
 #define init_module(mod, len, opts) syscall(__NR_init_module, mod, len, opts)
-#define delete_module(name, flags) syscall(__NR_delete_module, name, flags)
 
-int main(void) {
+int main(int argc, char **argv) {
-    int fd = open("hello.ko", O_RDONLY);
+	size_t image_size;
+	void *image;
+    int fd;
     struct stat st;
+
+	if (argc != 2) {
+		puts("Usage ./prog mymodule.ko");
+		return EXIT_FAILURE;
+	}
+ 	fd = open(argv[1], O_RDONLY);
     fstat(fd, &st);
-    size_t image_size = st.st_size;
+    image_size = st.st_size;
-    void *image = malloc(image_size);
+    image = malloc(image_size);
     read(fd, image, image_size);
     close(fd);
     if (init_module(image, image_size, "") != 0) {
@@ -28,9 +30,5 @@ int main(void) {
         return EXIT_FAILURE;
     }
     free(image);
-    if (delete_module("hello", O_NONBLOCK) != 0) {
-        perror("delete_modul");
-        return EXIT_FAILURE;
-    }
     return EXIT_SUCCESS;
 }

kernel_module/test/myrmmod.c

@@ -0,0 +1,22 @@
+#define _GNU_SOURCE
+#include <fcntl.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#define delete_module(name, flags) syscall(__NR_delete_module, name, flags)
+
+int main(int argc, char **argv) {
+	if (argc != 2) {
+		puts("Usage ./prog mymodule");
+		return EXIT_FAILURE;
+	}
+    if (delete_module(argv[1], O_NONBLOCK) != 0) {
+        perror("delete_modul");
+        return EXIT_FAILURE;
+    }
+    return EXIT_SUCCESS;
+}