mirror of
https://github.com/AuxXxilium/kmod.git
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159 lines
3.2 KiB
C
159 lines
3.2 KiB
C
/*
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* Copyright (C) 2012 ProFUSION embedded systems
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <assert.h>
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#include <errno.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <dlfcn.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <stddef.h>
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#include <string.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include "testsuite.h"
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struct mod {
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struct mod *next;
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int ret;
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int errcode;
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char name[];
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};
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static struct mod *modules;
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static bool need_init = true;
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static void parse_retcodes(struct mod *_modules, const char *s)
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{
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const char *p;
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if (s == NULL)
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return;
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for (p = s;;) {
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struct mod *mod;
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const char *modname;
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char *end;
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size_t modnamelen;
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int ret, errcode;
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long l;
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modname = p;
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if (modname == NULL || modname[0] == '\0')
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break;
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modnamelen = strcspn(s, ":");
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if (modname[modnamelen] != ':')
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break;
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p = modname + modnamelen + 1;
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if (p == NULL)
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break;
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l = strtol(p, &end, 0);
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if (end == p || *end != ':')
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break;
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ret = (int) l;
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p = end + 1;
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l = strtol(p, &end, 0);
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if (*end == ':')
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p = end + 1;
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else if (*end != '\0')
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break;
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errcode = (int) l;
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mod = malloc(sizeof(*mod) + modnamelen + 1);
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if (mod == NULL)
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break;
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memcpy(mod->name, modname, modnamelen);
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mod->name[modnamelen] = '\0';
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mod->ret = ret;
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mod->errcode = errcode;
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mod->next = _modules;
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_modules = mod;
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}
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}
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static struct mod *find_module(struct mod *_modules, const char *modname)
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{
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struct mod *mod;
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for (mod = _modules; mod != NULL; mod = mod->next) {
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if (strcmp(mod->name, modname))
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return mod;
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}
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return NULL;
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}
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static void init_retcodes(void)
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{
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const char *s;
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if (!need_init)
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return;
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need_init = false;
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s = getenv(S_TC_DELETE_MODULE_RETCODES);
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if (s == NULL) {
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fprintf(stderr, "TRAP delete_module(): missing export %s?\n",
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S_TC_DELETE_MODULE_RETCODES);
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}
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parse_retcodes(modules, s);
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}
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TS_EXPORT long delete_module(const char *name, unsigned int flags);
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/*
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* FIXME: change /sys/module/<modname> to fake-remove a module
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*
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* Default behavior is to exit successfully. If this is not the intended
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* behavior, set TESTSUITE_DELETE_MODULE_RETCODES env var.
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*/
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long delete_module(const char *modname, unsigned int flags)
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{
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struct mod *mod;
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init_retcodes();
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mod = find_module(modules, modname);
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if (mod == NULL)
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return 0;
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errno = mod->errcode;
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return mod->ret;
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}
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/* the test is going away anyway, but lets keep valgrind happy */
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void free_resources(void) __attribute__((destructor));
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void free_resources(void)
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{
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while (modules) {
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struct mod *mod = modules->next;
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free(modules);
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modules = mod;
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}
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}
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