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/*
CTDB database config handling
Copyright (C) Martin Schwenke 2018
database_conf_validate_lock_debug_script() based on
event_conf_validatye_debug_script():
Copyright (C) Amitay Isaacs 2018
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/>.
*/
#include "replace.h"
#include "system/filesys.h"
#include "system/dir.h"
#include "lib/util/debug.h"
#include "lib/util/samba_util.h"
#include "common/conf.h"
#include "common/path.h"
#include "database_conf.h"
#define DATABASE_CONF_VOLATILE_DB_DIR_DEFAULT CTDB_VARDIR "/volatile"
#define DATABASE_CONF_PERSISTENT_DB_DIR_DEFAULT CTDB_VARDIR "/persistent"
#define DATABASE_CONF_STATE_DB_DIR_DEFAULT CTDB_VARDIR "/state"
static bool check_static_string_change(const char *key,
const char *old_value,
const char *new_value,
enum conf_update_mode mode)
{
if (mode == CONF_MODE_RELOAD) {
if (strcmp(old_value, new_value) != 0) {
D_WARNING("Ignoring update of [%s] -> %s\n",
DATABASE_CONF_SECTION,
key);
}
}
return true;
}
static bool check_static_boolean_change(const char *key,
bool old_value,
bool new_value,
enum conf_update_mode mode)
{
if (mode == CONF_MODE_RELOAD || CONF_MODE_API) {
if (old_value != new_value) {
D_WARNING("Ignoring update of [%s] -> %s\n",
DATABASE_CONF_SECTION,
key);
}
}
return true;
}
static bool database_conf_validate_lock_debug_script(const char *key,
const char *old_script,
const char *new_script,
enum conf_update_mode mode)
{
char script[PATH_MAX];
char script_path[PATH_MAX];
struct stat st;
size_t len;
int ret;
if (new_script == NULL) {
return true;
}
len = strlcpy(script, new_script, sizeof(script));
if (len >= sizeof(script)) {
D_ERR("lock debug script name too long\n");
return false;
}
ret = snprintf(script_path,
sizeof(script_path),
"%s/%s",
path_etcdir(),
basename(script));
if (ret < 0 || (size_t)ret >= sizeof(script_path)) {
D_ERR("lock debug script path too long\n");
return false;
}
ret = stat(script_path, &st);
if (ret == -1) {
D_ERR("lock debug script %s does not exist\n", script_path);
return false;
}
if (! S_ISREG(st.st_mode)) {
D_ERR("lock debug script %s is not a file\n", script_path);
return false;
}
if (! (st.st_mode & S_IXUSR)) {
D_ERR("lock debug script %s is not executable\n", script_path);
return false;
}
return true;
}
static bool database_conf_validate_db_dir(const char *key,
const char *old_dir,
const char *new_dir,
enum conf_update_mode mode)
{
if (! directory_exist(new_dir)) {
D_ERR("%s \"%s\" does not exist\n", key, new_dir);
return false;
}
/* This sometimes warns but always returns true */
return check_static_string_change(key, old_dir, new_dir, mode);
}
void database_conf_init(struct conf_context *conf)
{
conf_define_section(conf, DATABASE_CONF_SECTION, NULL);
conf_define_string(conf,
DATABASE_CONF_SECTION,
DATABASE_CONF_VOLATILE_DB_DIR,
DATABASE_CONF_VOLATILE_DB_DIR_DEFAULT,
database_conf_validate_db_dir);
conf_define_string(conf,
DATABASE_CONF_SECTION,
DATABASE_CONF_PERSISTENT_DB_DIR,
DATABASE_CONF_PERSISTENT_DB_DIR_DEFAULT,
database_conf_validate_db_dir);
conf_define_string(conf,
DATABASE_CONF_SECTION,
DATABASE_CONF_STATE_DB_DIR,
DATABASE_CONF_STATE_DB_DIR_DEFAULT,
database_conf_validate_db_dir);
conf_define_string(conf,
DATABASE_CONF_SECTION,
DATABASE_CONF_LOCK_DEBUG_SCRIPT,
NULL,
database_conf_validate_lock_debug_script);
conf_define_boolean(conf,
DATABASE_CONF_SECTION,
DATABASE_CONF_TDB_MUTEXES,
true,
check_static_boolean_change);
}
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