106 lines
3.3 KiB
Diff
106 lines
3.3 KiB
Diff
From 4a36f4a8b16c7fd345f6aec973d926d4e429328a Mon Sep 17 00:00:00 2001
|
|
From: Michal Marek <mmarek@suse.cz>
|
|
Date: Wed, 5 Mar 2014 14:40:14 +0100
|
|
Subject: [PATCH 3/6] libkmod: Implement filtering of unsupported modules (off
|
|
by default)
|
|
|
|
References: fate#316971
|
|
Patch-mainline: never
|
|
---
|
|
libkmod/libkmod-config.c | 12 ++++++++++--
|
|
libkmod/libkmod-internal.h | 1 +
|
|
libkmod/libkmod-module.c | 31 +++++++++++++++++++++++++++++++
|
|
3 files changed, 42 insertions(+), 2 deletions(-)
|
|
|
|
Index: kmod-33/libkmod/libkmod-config.c
|
|
===================================================================
|
|
--- kmod-33.orig/libkmod/libkmod-config.c
|
|
+++ kmod-33/libkmod/libkmod-config.c
|
|
@@ -869,8 +869,16 @@ static int kmod_config_parse(struct kmod
|
|
ERR(ctx, "%s: command %s is deprecated and not parsed anymore\n",
|
|
filename, cmd);
|
|
} else if (streq(cmd, "allow_unsupported_modules")) {
|
|
- /* dummy option for now */
|
|
- ;
|
|
+ char *param = strtok_r(NULL, "\t ", &saveptr);
|
|
+
|
|
+ if (param == NULL)
|
|
+ goto syntax_error;
|
|
+ if (streq(param, "yes") || streq(param, "1"))
|
|
+ config->block_unsupported = 0;
|
|
+ else if (streq(param, "no") || streq(param, "0"))
|
|
+ config->block_unsupported = 1;
|
|
+ else
|
|
+ goto syntax_error;
|
|
} else {
|
|
syntax_error:
|
|
ERR(ctx, "%s line %u: ignoring bad line starting with '%s'\n",
|
|
Index: kmod-33/libkmod/libkmod-internal.h
|
|
===================================================================
|
|
--- kmod-33.orig/libkmod/libkmod-internal.h
|
|
+++ kmod-33/libkmod/libkmod-internal.h
|
|
@@ -131,6 +131,7 @@ struct kmod_config {
|
|
struct kmod_list *weakdeps;
|
|
|
|
struct kmod_list *paths;
|
|
+ int block_unsupported;
|
|
};
|
|
|
|
int kmod_config_new(struct kmod_ctx *ctx, struct kmod_config **config, const char * const *config_paths) __attribute__((nonnull(1, 2,3)));
|
|
Index: kmod-33/libkmod/libkmod-module.c
|
|
===================================================================
|
|
--- kmod-33.orig/libkmod/libkmod-module.c
|
|
+++ kmod-33/libkmod/libkmod-module.c
|
|
@@ -767,6 +767,24 @@ KMOD_EXPORT const char *kmod_module_get_
|
|
return mod->name;
|
|
}
|
|
|
|
+static int check_module_supported(struct kmod_module *mod)
|
|
+{
|
|
+ char **strings;
|
|
+ int i, count;
|
|
+ struct kmod_elf *elf;
|
|
+
|
|
+ elf = kmod_file_get_elf(mod->file);
|
|
+ count = kmod_elf_get_strings(elf, ".modinfo", &strings);
|
|
+ if (count < 0)
|
|
+ return count;
|
|
+ for (i = 0; i < count; i++)
|
|
+ if (streq(strings[i], "supported=yes") ||
|
|
+ streq(strings[i], "supported=external")) {
|
|
+ return 1;
|
|
+ }
|
|
+ return 0;
|
|
+}
|
|
+
|
|
/**
|
|
* kmod_module_get_path:
|
|
* @mod: kmod module
|
|
@@ -947,6 +965,7 @@ KMOD_EXPORT int kmod_module_insert_modul
|
|
int err;
|
|
const char *path;
|
|
const char *args = options ? options : "";
|
|
+ const struct kmod_config *config = kmod_get_config(mod->ctx);
|
|
|
|
if (mod == NULL)
|
|
return -ENOENT;
|
|
@@ -965,6 +984,18 @@ KMOD_EXPORT int kmod_module_insert_modul
|
|
}
|
|
}
|
|
|
|
+ if (config->block_unsupported) {
|
|
+ err = check_module_supported(mod);
|
|
+ if (err < 0)
|
|
+ return err;
|
|
+ else if (err == 0) {
|
|
+ ERR(mod->ctx, "module '%s' is unsupported\n", mod->name);
|
|
+ ERR(mod->ctx, "Use --allow-unsupported or set allow_unsupported_modules 1 in\n");
|
|
+ ERR(mod->ctx, "/etc/modprobe.d/10-unsupported-modules.conf\n");
|
|
+ return -EPERM;
|
|
+ }
|
|
+ }
|
|
+
|
|
err = do_finit_module(mod, flags, args);
|
|
if (err == -ENOSYS)
|
|
err = do_init_module(mod, flags, args);
|