libkmod-module: Simplify kmod_module_insert_module()

Store the file and elf pointer in the kmod_module structure and have it
freed together with the module.

diff --git a/libkmod/libkmod-module.c b/libkmod/libkmod-module.c
index 3d3325f..a6c8a6e 100644 (file)
--- a/libkmod/libkmod-module.c
+++ b/libkmod/libkmod-module.c
@@ -790,8 +790,7 @@ KMOD_EXPORT int kmod_module_insert_module(struct kmod_module *mod,
        int err;
        const void *mem;
        off_t size;
-       struct kmod_file *file;
-       struct kmod_elf *elf = NULL;
+       struct kmod_elf *elf;
        const char *path;
        const char *args = options ? options : "";
 
@@ -804,13 +803,13 @@ KMOD_EXPORT int kmod_module_insert_module(struct kmod_module *mod,
                return -ENOSYS;
        }
 
-       file = kmod_file_open(mod->ctx, path);
-       if (file == NULL) {
+       mod->file = kmod_file_open(mod->ctx, path);
+       if (mod->file == NULL) {
                err = -errno;
                return err;
        }
 
-       if (kmod_file_get_direct(file)) {
+       if (kmod_file_get_direct(mod->file)) {
                unsigned int kernel_flags = 0;
 
                if (flags & KMOD_INSERT_FORCE_VERMAGIC)
@@ -818,19 +817,16 @@ KMOD_EXPORT int kmod_module_insert_module(struct kmod_module *mod,
                if (flags & KMOD_INSERT_FORCE_MODVERSION)
                        kernel_flags |= MODULE_INIT_IGNORE_MODVERSIONS;
 
-               err = finit_module(kmod_file_get_fd(file), args, kernel_flags);
+               err = finit_module(kmod_file_get_fd(mod->file), args, kernel_flags);
                if (err == 0 || errno != ENOSYS)
                        goto init_finished;
        }
 
-       size = kmod_file_get_size(file);
-       mem = kmod_file_get_contents(file);
-
        if (flags & (KMOD_INSERT_FORCE_VERMAGIC | KMOD_INSERT_FORCE_MODVERSION)) {
-               elf = kmod_elf_new(mem, size);
+               elf = kmod_file_get_elf(mod->file);
                if (elf == NULL) {
                        err = -errno;
-                       goto elf_failed;
+                       return err;
                }
 
                if (flags & KMOD_INSERT_FORCE_MODVERSION) {
@@ -846,7 +842,10 @@ KMOD_EXPORT int kmod_module_insert_module(struct kmod_module *mod,
                }
 
                mem = kmod_elf_get_memory(elf);
+       } else {
+               mem = kmod_file_get_contents(mod->file);
        }
+       size = kmod_file_get_size(mod->file);
 
        err = init_module(mem, size, args);
 init_finished:
@@ -854,12 +853,6 @@ init_finished:
                err = -errno;
                INFO(mod->ctx, "Failed to insert module '%s': %m\n", path);
        }
-
-       if (elf != NULL)
-               kmod_elf_unref(elf);
-elf_failed:
-       kmod_file_unref(file);
-
        return err;
 }