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/*
Unix SMB/CIFS implementation.
Copyright (C) Jelmer Vernooij 2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file
* @brief Module initialization function handling
*/
#include "includes.h"
#include "system/dir.h"
/**
* Obtain the init function from a shared library file
*/
_PUBLIC_ init_module_fn load_module(TALLOC_CTX *mem_ctx, const char *path)
{
void *handle;
void *init_fn;
handle = dlopen(path, RTLD_NOW);
if (handle == NULL) {
DEBUG(0, ("Unable to open %s: %s\n", path, dlerror()));
return NULL;
}
init_fn = dlsym(handle, "init_module");
if (init_fn == NULL) {
DEBUG(0, ("Unable to find init_module() in %s: %s\n", path, dlerror()));
DEBUG(1, ("Loading module '%s' failed\n", path));
dlclose(handle);
return NULL;
}
return (init_module_fn)init_fn;
}
/**
* Obtain list of init functions from the modules in the specified
* directory
*/
_PUBLIC_ init_module_fn *load_modules(TALLOC_CTX *mem_ctx, const char *path)
{
DIR *dir;
struct dirent *entry;
char *filename;
int success = 0;
init_module_fn *ret = talloc_array(mem_ctx, init_module_fn, 2);
ret[0] = NULL;
dir = opendir(path);
if (dir == NULL) {
talloc_free(ret);
return NULL;
}
while((entry = readdir(dir))) {
if (ISDOT(entry->d_name) || ISDOTDOT(entry->d_name))
continue;
filename = talloc_asprintf(mem_ctx, "%s/%s", path, entry->d_name);
ret[success] = load_module(mem_ctx, filename);
if (ret[success]) {
ret = talloc_realloc(mem_ctx, ret, init_module_fn, success+2);
success++;
ret[success] = NULL;
}
talloc_free(filename);
}
closedir(dir);
return ret;
}
/**
* Run the specified init functions.
*
* @return True if all functions ran successfully, False otherwise
*/
_PUBLIC_ BOOL run_init_functions(NTSTATUS (**fns) (void))
{
int i;
BOOL ret = True;
if (fns == NULL)
return True;
for (i = 0; fns[i]; i++) { ret &= (BOOL)NT_STATUS_IS_OK(fns[i]()); }
return ret;
}
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