testsuite/test-blacklist.c

   1 /*
   2  * Copyright (C) 2011-2013  ProFUSION embedded systems
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include <errno.h>
  19 #include <inttypes.h>
  20 #include <stddef.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <unistd.h>
  25
  26 #include <libkmod/libkmod.h>
  27
  28 /* good luck bulding a kmod_list outside of the library... makes this blacklist
  29  * function rather pointless */
  30 #include <libkmod/libkmod-internal.h>
  31
  32 /* FIXME: hack, change name so we don't clash */
  33 #undef ERR
  34 #include "testsuite.h"
  35
  36 static int blacklist_1(const struct test *t)
  37 {
  38         struct kmod_ctx *ctx;
  39         struct kmod_list *list = NULL, *l, *filtered;
  40         struct kmod_module *mod;
  41         int err;
  42         size_t len = 0;
  43
  44         const char *names[] = { "pcspkr", "pcspkr2", "floppy", "ext4", NULL };
  45         const char **name;
  46
  47         ctx = kmod_new(NULL, NULL);
  48         if (ctx == NULL)
  49                 exit(EXIT_FAILURE);
  50
  51         for(name = names; *name; name++) {
  52                 err = kmod_module_new_from_name(ctx, *name, &mod);
  53                 if (err < 0)
  54                         goto fail_lookup;
  55                 list = kmod_list_append(list, mod);
  56         }
  57
  58         err = kmod_module_apply_filter(ctx, KMOD_FILTER_BLACKLIST, list,
  59                                                                 &filtered);
  60         if (err < 0) {
  61                 ERR("Could not filter: %s\n", strerror(-err));
  62                 goto fail;
  63         }
  64         if (filtered == NULL) {
  65                 ERR("All modules were filtered out!\n");
  66                 goto fail;
  67         }
  68
  69         kmod_list_foreach(l, filtered) {
  70                 const char *modname;
  71                 mod = kmod_module_get_module(l);
  72                 modname = kmod_module_get_name(mod);
  73                 if (strcmp("pcspkr", modname) == 0 || strcmp("floppy", modname) == 0)
  74                         goto fail;
  75                 len++;
  76                 kmod_module_unref(mod);
  77         }
  78
  79         if (len != 2)
  80                 goto fail;
  81
  82         kmod_module_unref_list(filtered);
  83         kmod_module_unref_list(list);
  84         kmod_unref(ctx);
  85
  86         return EXIT_SUCCESS;
  87
  88 fail:
  89         kmod_module_unref_list(list);
  90 fail_lookup:
  91         kmod_unref(ctx);
  92         return EXIT_FAILURE;
  93 }
  94 static const struct test sblacklist_1 = {
  95         .name = "blacklist_1",
  96         .description = "check if modules are correctly blacklisted",
  97         .func = blacklist_1,
  98         .config = {
  99                 [TC_ROOTFS] = TESTSUITE_ROOTFS "test-blacklist/",
 100         },
 101         .need_spawn = true,
 102 };
 103
 104 TESTSUITE_MAIN();