int
dm_drv_get_rq (void)
{
unsigned int minv_dmrq[3] = {1, 1, 0};
unsigned int version[3] = {0, 0, 0};
unsigned int * v = version;
if (dm_drv_version(v, TGT_MPATH)) {
/* in doubt return least capable */
return 0;
}
/* test request based multipath capability */
if VERSION_GE(v, minv_dmrq) {
condlog(3, "activate request-based multipathing mode "
"(driver >= v%u.%u.%u)",
minv_dmrq[0], minv_dmrq[1], minv_dmrq[2]);
return 1;
}
static int
dm_drv_prereq (void)
{
unsigned int minv[3] = {1, 0, 3};
unsigned int version[3] = {0, 0, 0};
unsigned int * v = version;
if (dm_drv_version(v, TGT_MPATH)) {
/* in doubt return not capable */
return 1;
}
/* test request based multipath capability */
condlog(3, "DM multipath kernel driver v%u.%u.%u",
v[0], v[1], v[2]);
if VERSION_GE(v, minv)
return 0;
condlog(0, "DM multipath kernel driver must be >= v%u.%u.%u",
minv[0], minv[1], minv[2]);
return 1;
}
int
load_config (char * file)
{
if (!conf)
conf = alloc_config();
if (!conf)
return 1;
/*
* internal defaults
*/
if (!conf->verbosity)
conf->verbosity = DEFAULT_VERBOSITY;
conf->udev = udev_new();
dm_drv_version(conf->version, TGT_MPATH);
conf->dev_type = DEV_NONE;
conf->minio = DEFAULT_MINIO;
conf->minio_rq = DEFAULT_MINIO_RQ;
get_sys_max_fds(&conf->max_fds);
conf->bindings_file = set_default(DEFAULT_BINDINGS_FILE);
conf->wwids_file = set_default(DEFAULT_WWIDS_FILE);
conf->bindings_read_only = 0;
conf->multipath_dir = set_default(DEFAULT_MULTIPATHDIR);
conf->features = set_default(DEFAULT_FEATURES);
conf->flush_on_last_del = 0;
conf->attribute_flags = 0;
conf->reassign_maps = DEFAULT_REASSIGN_MAPS;
conf->checkint = DEFAULT_CHECKINT;
conf->max_checkint = MAX_CHECKINT(conf->checkint);
conf->fast_io_fail = DEFAULT_FAST_IO_FAIL;
conf->retain_hwhandler = DEFAULT_RETAIN_HWHANDLER;
conf->detect_prio = DEFAULT_DETECT_PRIO;
/*
* preload default hwtable
*/
if (conf->hwtable == NULL) {
conf->hwtable = vector_alloc();
if (!conf->hwtable)
goto out;
}
if (setup_default_hwtable(conf->hwtable))
goto out;
/*
* read the config file
*/
set_current_keywords(&conf->keywords);
alloc_keywords();
if (filepresent(file)) {
int builtin_hwtable_size;
builtin_hwtable_size = VECTOR_SIZE(conf->hwtable);
if (init_data(file, init_keywords)) {
condlog(0, "error parsing config file");
goto out;
}
if (VECTOR_SIZE(conf->hwtable) > builtin_hwtable_size) {
/*
* remove duplica in hwtable. config file
* takes precedence over build-in hwtable
*/
factorize_hwtable(conf->hwtable, builtin_hwtable_size);
}
} else {
init_keywords();
}
/*
* fill the voids left in the config file
*/
if (conf->blist_devnode == NULL) {
conf->blist_devnode = vector_alloc();
if (!conf->blist_devnode)
goto out;
}
if (conf->blist_wwid == NULL) {
conf->blist_wwid = vector_alloc();
if (!conf->blist_wwid)
goto out;
}
if (conf->blist_device == NULL) {
conf->blist_device = vector_alloc();
if (!conf->blist_device)
goto out;
}
if (setup_default_blist(conf))
goto out;
if (conf->elist_devnode == NULL) {
conf->elist_devnode = vector_alloc();
if (!conf->elist_devnode)
goto out;
}
if (conf->elist_wwid == NULL) {
conf->elist_wwid = vector_alloc();
if (!conf->elist_wwid)
goto out;
}
if (conf->elist_device == NULL) {
conf->elist_device = vector_alloc();
if (!conf->elist_device)
goto out;
}
if (conf->mptable == NULL) {
conf->mptable = vector_alloc();
if (!conf->mptable)
goto out;
}
if (conf->bindings_file == NULL)
conf->bindings_file = set_default(DEFAULT_BINDINGS_FILE);
if (!conf->multipath_dir || !conf->bindings_file ||
!conf->wwids_file)
goto out;
return 0;
out:
free_config(conf);
return 1;
}
