/*
* Find unchanged files from a specified time from the DB
* Input:
* query_callback : query callback fuction to handle
* result records from the query
* for_time : Time from where the file/s are not changed
* */
int
gf_sqlite3_find_unchanged_for_time (void *db_conn,
gf_query_callback_t query_callback,
void *query_cbk_args,
gfdb_time_t *for_time)
{
int ret = -1;
char *query_str = NULL;
gf_sql_connection_t *sql_conn = db_conn;
sqlite3_stmt *prep_stmt = NULL;
uint64_t for_time_usec = 0;
char *base_query_str = NULL;
CHECK_SQL_CONN (sql_conn, out);
GF_VALIDATE_OR_GOTO(GFDB_STR_SQLITE3, query_callback, out);
ret = gf_get_basic_query_stmt (&base_query_str);
if (ret <= 0) {
goto out;
}
ret = gf_asprintf (&query_str, "%s AND "
/*First condition: For writes*/
"( ((" GF_COL_TB_WSEC " * " TOSTRING(GFDB_MICROSEC) " + "
GF_COL_TB_WMSEC ") <= ? )"
" AND "
/*Second condition: For reads*/
"((" GF_COL_TB_RWSEC " * " TOSTRING(GFDB_MICROSEC) " + "
GF_COL_TB_RWMSEC ") <= ?) )", base_query_str);
if (ret < 0) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_QUERY_FAILED,
"Failed to create query statement");
query_str = NULL;
goto out;
}
for_time_usec = gfdb_time_2_usec (for_time);
ret = sqlite3_prepare (sql_conn->sqlite3_db_conn, query_str, -1,
&prep_stmt, 0);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_PREPARE_FAILED, "Failed to prepare statment %s :"
" %s", query_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind write wind time*/
ret = sqlite3_bind_int64 (prep_stmt, 1, for_time_usec);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed to bind for_time_usec "
"%"PRIu64" : %s", for_time_usec,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind read wind time*/
ret = sqlite3_bind_int64 (prep_stmt, 2, for_time_usec);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed to bind for_time_usec "
"%"PRIu64" : %s", for_time_usec,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Execute the query*/
ret = gf_sql_query_function (prep_stmt, query_callback, query_cbk_args);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_QUERY_FAILED,
"Failed Query %s", query_str);
goto out;
}
ret = 0;
out:
sqlite3_finalize (prep_stmt);
GF_FREE (base_query_str);
GF_FREE (query_str);
return ret;
}
/******************************************************************************
*
* Find/Query helper functions
*
* ****************************************************************************/
int
gf_sql_query_function (sqlite3_stmt *prep_stmt,
gf_query_callback_t query_callback,
void *_query_cbk_args)
{
int ret = -1;
gfdb_query_record_t *gfdb_query_record = NULL;
char *text_column = NULL;
sqlite3 *db_conn = NULL;
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, prep_stmt, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, query_callback, out);
db_conn = sqlite3_db_handle(prep_stmt);
gfdb_query_record = gfdb_query_record_init ();
if (!gfdb_query_record) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_CREATE_FAILED, "Failed to create "
"gfdb_query_record");
goto out;
}
/*Loop to access queried rows*/
while ((ret = sqlite3_step (prep_stmt)) == SQLITE_ROW) {
/*Clear the query record*/
memset (gfdb_query_record, 0, sizeof(*gfdb_query_record));
if (sqlite3_column_count(prep_stmt) > 0) {
/*Retriving GFID - column index is 0*/
text_column = (char *)sqlite3_column_text
(prep_stmt, 0);
if (!text_column) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_GET_ID_FAILED, "Failed "
"retriving GF_ID");
goto out;
}
ret = gf_uuid_parse (text_column, gfdb_query_record->gfid);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_PARSE_FAILED, "Failed parsing "
"GF_ID");
goto out;
}
/*Retrive Link Buffer - column index 1*/
text_column = (char *)sqlite3_column_text
(prep_stmt, 1);
/* Get link string. Do shallow copy here
* query_callback function should do a
* deep copy and then do operations on this field*/
gfdb_query_record->_link_info_str = text_column;
gfdb_query_record->link_info_size = strlen
(text_column);
/* Call the call back function provided*/
ret = query_callback (gfdb_query_record,
_query_cbk_args);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_QUERY_CALL_BACK_FAILED,
"Query Call back failed!");
goto out;
}
}
}
if (ret != SQLITE_DONE) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_GET_RECORD_FAILED, "Failed retriving records "
"from db : %s", sqlite3_errmsg (db_conn));
ret = -1;
goto out;
}
ret = 0;
out:
gfdb_query_record_fini (&gfdb_query_record);
return ret;
}
static inline int
gf_sql_update_link_flags (gf_sql_connection_t *sql_conn,
char *gfid,
char *pargfid,
char *basename,
int update_flag,
gf_boolean_t is_update_or_delete)
{
int ret = -1;
sqlite3_stmt *update_stmt = NULL;
char *update_column = NULL;
char update_str[1024] = "";
CHECK_SQL_CONN (sql_conn, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, gfid, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, pargfid, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, basename, out);
update_column = (is_update_or_delete) ? "LINK_UPDATE" : "W_DEL_FLAG";
sprintf (update_str, "UPDATE "
GF_FILE_LINK_TABLE
" SET %s = ?"
" WHERE GF_ID = ? AND GF_PID = ? AND FNAME = ?;",
update_column);
/*Prepare statement*/
ret = sqlite3_prepare (sql_conn->sqlite3_db_conn, update_str, -1,
&update_stmt, 0);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_PREPARE_FAILED, "Failed preparing update "
"statment %s : %s", update_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind link_update*/
ret = sqlite3_bind_int (update_stmt, 1, update_flag);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding update_flag %d "
": %s", update_flag,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind gfid*/
ret = sqlite3_bind_text (update_stmt, 2, gfid, -1, NULL);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding gfid %s : %s",
gfid, sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind pargfid*/
ret = sqlite3_bind_text (update_stmt, 3, pargfid, -1, NULL);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding parent gfid %s "
": %s", pargfid,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind basename*/
ret = sqlite3_bind_text (update_stmt, 4, basename, -1, NULL);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding basename %s : "
"%s", basename,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Execute the prepare statement*/
if (sqlite3_step(update_stmt) != SQLITE_DONE) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_EXEC_FAILED,
"Failed executing the prepared stmt %s : %s",
update_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
ret = 0;
out:
/*Free prepared statement*/
sqlite3_finalize (update_stmt);
return ret;
}
/**
* cache_nfs_fh -- Places the nfs file handle in the underlying dict as we are
* using as our cache. The key is "exportid:gfid:host_addr", the
* value is an entry struct containing the export item that
* was authorized for the operation and the file handle that was
* authorized.
*
* @cache: The cache to place fh's in
* @fh : The fh to cache
* @host_addr: The address of the host
* @export_item: The export item that was authorized
*
*/
int
cache_nfs_fh (struct auth_cache *cache, struct nfs3_fh *fh,
const char *host_addr, struct export_item *export_item)
{
int ret = -EINVAL;
char *hashkey = NULL;
data_t *entry_data = NULL;
time_t timestamp = 0;
gf_boolean_t can_write = _gf_false;
struct auth_cache_entry *entry = NULL;
GF_VALIDATE_OR_GOTO (GF_NFS, host_addr, out);
GF_VALIDATE_OR_GOTO (GF_NFS, cache, out);
GF_VALIDATE_OR_GOTO (GF_NFS, fh, out);
/* If a dict has not been allocated already, allocate it. */
if (!cache->cache_dict) {
cache->cache_dict = dict_new ();
if (!cache->cache_dict) {
ret = -ENOMEM;
goto out;
}
}
/* If we could already find it in the cache, just return */
ret = auth_cache_lookup (cache, fh, host_addr, ×tamp, &can_write);
if (ret == 0) {
gf_msg_trace (GF_NFS, 0, "found cached auth/fh for host "
"%s", host_addr);
goto out;
}
make_hashkey (hashkey, fh, host_addr);
entry = auth_cache_entry_init ();
if (!entry) {
ret = -ENOMEM;
goto out;
}
entry->timestamp = time (NULL);
entry->item = export_item;
/* The cache entry will simply be the time that the entry
* was cached.
*/
entry_data = bin_to_data (entry, sizeof (*entry));
if (!entry_data) {
GF_FREE (entry);
goto out;
}
ret = dict_set (cache->cache_dict, hashkey, entry_data);
if (ret == -1) {
GF_FREE (entry);
goto out;
}
gf_msg_trace (GF_NFS, 0, "Caching file-handle (%s)", host_addr);
ret = 0;
out:
return ret;
}
int
xlator_dynload (xlator_t *xl)
{
int ret = -1;
char *name = NULL;
void *handle = NULL;
volume_opt_list_t *vol_opt = NULL;
class_methods_t *vtbl = NULL;
GF_VALIDATE_OR_GOTO ("xlator", xl, out);
INIT_LIST_HEAD (&xl->volume_options);
ret = gf_asprintf (&name, "%s/%s.so", XLATORDIR, xl->type);
if (-1 == ret) {
gf_log ("xlator", GF_LOG_ERROR, "asprintf failed");
goto out;
}
ret = -1;
gf_log ("xlator", GF_LOG_TRACE, "attempt to load file %s", name);
handle = dlopen (name, RTLD_NOW|RTLD_GLOBAL);
if (!handle) {
gf_log ("xlator", GF_LOG_WARNING, "%s", dlerror ());
goto out;
}
xl->dlhandle = handle;
if (!(xl->fops = dlsym (handle, "fops"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(fops) on %s",
dlerror ());
goto out;
}
if (!(xl->cbks = dlsym (handle, "cbks"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(cbks) on %s",
dlerror ());
goto out;
}
/*
* If class_methods exists, its contents override any definitions of
* init or fini for that translator. Otherwise, we fall back to the
* older method of looking for init and fini directly.
*/
vtbl = dlsym(handle,"class_methods");
if (vtbl) {
xl->init = vtbl->init;
xl->fini = vtbl->fini;
xl->reconfigure = vtbl->reconfigure;
xl->notify = vtbl->notify;
}
else {
if (!(*VOID(&xl->init) = dlsym (handle, "init"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(init) on %s",
dlerror ());
goto out;
}
if (!(*VOID(&(xl->fini)) = dlsym (handle, "fini"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(fini) on %s",
dlerror ());
goto out;
}
if (!(*VOID(&(xl->reconfigure)) = dlsym (handle,
"reconfigure"))) {
gf_log ("xlator", GF_LOG_TRACE,
"dlsym(reconfigure) on %s -- neglecting",
dlerror());
}
if (!(*VOID(&(xl->notify)) = dlsym (handle, "notify"))) {
gf_log ("xlator", GF_LOG_TRACE,
"dlsym(notify) on %s -- neglecting",
dlerror ());
}
}
if (!(xl->dumpops = dlsym (handle, "dumpops"))) {
gf_log ("xlator", GF_LOG_TRACE,
"dlsym(dumpops) on %s -- neglecting", dlerror ());
}
if (!(*VOID(&(xl->mem_acct_init)) = dlsym (handle, "mem_acct_init"))) {
gf_log (xl->name, GF_LOG_TRACE,
"dlsym(mem_acct_init) on %s -- neglecting",
dlerror ());
}
vol_opt = GF_CALLOC (1, sizeof (volume_opt_list_t),
gf_common_mt_volume_opt_list_t);
if (!vol_opt) {
goto out;
}
if (!(vol_opt->given_opt = dlsym (handle, "options"))) {
dlerror ();
gf_log (xl->name, GF_LOG_TRACE,
"Strict option validation not enforced -- neglecting");
}
INIT_LIST_HEAD (&vol_opt->list);
list_add_tail (&vol_opt->list, &xl->volume_options);
fill_defaults (xl);
ret = 0;
out:
GF_FREE (name);
return ret;
}
/**
* exp_file_parse -- Parse an exports file into a structure
* that can be looked up through simple
* function calls.
*
* @filepath: Path to the exports file
* @ms : Current mount state (useful to match with gluster vol files)
*
* @return : success: 0
* failure: -1 on parsing failure, -EINVAL on bad arguments,
* -ENOMEM on allocation failures.
*
* The caller is responsible for freeing memory allocated by this function.
* The caller should free this memory using the exp_file_deinit () function.
* Calling GF_FREE ( ) on the pointer will NOT free all the allocated memory.
*
* Externally usable.
*/
int
exp_file_parse(const char *filepath, struct exports_file **expfile,
struct mount3_state *ms)
{
FILE *fp = NULL;
struct exports_file *file = NULL;
size_t len = 0;
int ret = -EINVAL;
unsigned long line_number = 0;
char *line = NULL;
struct export_dir *expdir = NULL;
/* Sets whether we we should parse the entire file or just that which
* is present in the mount state */
gf_boolean_t parse_complete_file = _gf_false;
GF_VALIDATE_OR_GOTO(GF_EXP, expfile, parse_done);
if (!ms) {
/* If mount state is null that means that we
* should go through and parse the whole file
* since we don't have anything to compare against.
*/
parse_complete_file = _gf_true;
}
fp = fopen(filepath, "r");
if (!fp) {
ret = -errno;
goto parse_done;
}
ret = _exp_init_parsers();
if (ret < 0)
goto parse_done;
/* Process the file line by line, with each line being parsed into
* an struct export_dir struct. If 'parse_complete_file' is set to TRUE
* then
*/
while (getline(&line, &len, fp) != -1) {
line_number++; /* Keeping track of line number allows us to
* to log which line numbers were wrong
*/
strtok(line, "\n"); /* removes the newline character from
* the line
*/
/* Parse the line from the file into an struct export_dir
* structure. The process is as follows:
* Given a line like :
* "/vol @test(sec=sys,rw,anonuid=0) 10.35.11.31(sec=sys,rw)"
*
* This function will allocate an export dir and set its name
* to '/vol', using the function _exp_line_dir_parse ().
*
* Then it will extract the netgroups from the line, in this
* case it would be '@test(sec=sys,rw,anonuid=0)', and set the
* item structure's name to '@test'.
* It will also extract the options from that string and parse
* them into an struct export_options which will be pointed
* to by the item structure. This will be put into a dict
* which will be pointed to by the export directory structure.
*
* The same process happens above for the host string
* '10.35.11.32(sec=sys,rw)'
*/
ret = _exp_line_parse(line, &expdir, parse_complete_file, ms);
if (ret == -ENOMEM) {
/* If we get memory allocation errors, we really should
* not continue parsing, so just free the allocated
* memory and exit.
*/
goto free_and_done;
}
if (ret < 0) {
gf_msg(GF_EXP, GF_LOG_ERROR, -ret, NFS_MSG_PARSE_FAIL,
"Failed to parse line #%lu", line_number);
continue; /* Skip entering this line and continue */
}
if (ret == GF_EXP_PARSE_LINE_IGNORING) {
/* This just means the line was empty or started with a
* '#' or a ' ' and we are ignoring it.
*/
gf_msg_debug(GF_EXP, 0,
"Ignoring line #%lu because it started "
"with a %c",
line_number, *line);
continue;
}
if (!file) {
file = _exports_file_init();
GF_CHECK_ALLOC_AND_LOG(GF_EXP, file, ret,
"Allocation error while "
"allocating file struct",
parse_done);
file->filename = gf_strdup(filepath);
GF_CHECK_ALLOC_AND_LOG(GF_EXP, file, ret,
"Allocation error while "
"duping filepath",
free_and_done);
}
/* If the parsing is successful store the export directory
* in the file structure.
*/
_exp_file_insert(file, expdir);
}
/* line got allocated through getline(), don't use GF_FREE() for it */
free(line);
*expfile = file;
goto parse_done;
free_and_done:
exp_file_deinit(file);
_export_dir_deinit(expdir);
parse_done:
if (fp)
fclose(fp);
_exp_deinit_parsers();
return ret;
}
/**
* __exp_line_ng_parse -- Extract the netgroups in the line
* and call helper functions to parse
* the string.
*
* The call chain goes like this:
*
* 1) __exp_line_ng_parse ("/test @test(sec=sys,rw,anonuid=0)")
* 2) __exp_line_ng_str_parse ("@test(sec=sys,rw,anonuid=0)");
* 3) __exp_line_opt_parse("(sec=sys,rw,anonuid=0)");
*
*
* @line : The line to parse
* @ng_dict : Double pointer to the dict we want to
* insert netgroups into.
*
* Allocates the dict, extracts netgroup strings from the line,
* parses them into a struct export_item structure and inserts
* them in the dict.
*
* @return: success: GF_EXP_PARSE_SUCCESS
* failure: GF_EXP_PARSE_ITEM_FAILURE on parse failure,
* GF_EXP_PARSE_ITEM_NOT_FOUND if the netgroup was not found
* -EINVAL on bad args, -ENOMEM on allocation errors.
*
* Not for external use.
*/
static int
__exp_line_ng_parse(const char *line, dict_t **ng_dict)
{
dict_t *netgroups = NULL;
char *strmatch = NULL;
int ret = -EINVAL;
struct export_item *exp_ng = NULL;
data_t *ngdata = NULL;
GF_VALIDATE_OR_GOTO(GF_EXP, line, out);
GF_VALIDATE_OR_GOTO(GF_EXP, ng_dict, out);
*ng_dict = NULL; /* Will be set if parse is successful */
/* Initialize a parser with the line to parse
* and the regex used to parse it.
*/
ret = parser_set_string(netgroup_parser, line);
if (ret < 0) {
goto out;
}
gf_msg_trace(GF_EXP, 0, "parsing line: %s", line);
while ((strmatch = parser_get_next_match(netgroup_parser))) {
if (!netgroups) {
/* Allocate a new dict to store the netgroups. */
netgroups = dict_new();
if (!netgroups) {
ret = -ENOMEM;
goto free_and_out;
}
}
gf_msg_trace(GF_EXP, 0, "parsing netgroup: %s", strmatch);
ret = __exp_line_ng_host_str_parse(strmatch, &exp_ng);
if (ret != 0) {
/* Parsing or other critical errors.
* caller will handle return value.
*/
_exp_dict_destroy(netgroups);
goto free_and_out;
}
ngdata = bin_to_data(exp_ng, sizeof(*exp_ng));
dict_set(netgroups, exp_ng->name, ngdata);
/* Free this matched string and continue parsing. */
GF_FREE(strmatch);
}
/* If the netgroups dict was not allocated, then we know that
* no matches were found.
*/
if (!netgroups) {
ret = GF_EXP_PARSE_ITEM_NOT_FOUND;
parser_unset_string(netgroup_parser);
goto out;
}
ret = GF_EXP_PARSE_SUCCESS;
*ng_dict = netgroups;
free_and_out:
parser_unset_string(netgroup_parser);
GF_FREE(strmatch);
out:
return ret;
}
int
event_register_epoll (struct event_pool *event_pool, int fd,
event_handler_t handler,
void *data, int poll_in, int poll_out)
{
int idx = -1;
int ret = -1;
int destroy = 0;
struct epoll_event epoll_event = {0, };
struct event_data *ev_data = (void *)&epoll_event.data;
struct event_slot_epoll *slot = NULL;
GF_VALIDATE_OR_GOTO ("event", event_pool, out);
/* TODO: Even with the below check, there is a possiblity of race,
* What if the destroy mode is set after the check is done.
* Not sure of the best way to prevent this race, ref counting
* is one possibility.
* There is no harm in registering and unregistering the fd
* even after destroy mode is set, just that such fds will remain
* open until unregister is called, also the events on that fd will be
* notified, until one of the poller thread is alive.
*/
pthread_mutex_lock (&event_pool->mutex);
{
destroy = event_pool->destroy;
}
pthread_mutex_unlock (&event_pool->mutex);
if (destroy == 1)
goto out;
idx = event_slot_alloc (event_pool, fd);
if (idx == -1) {
gf_log ("epoll", GF_LOG_ERROR,
"could not find slot for fd=%d", fd);
return -1;
}
slot = event_slot_get (event_pool, idx);
assert (slot->fd == fd);
LOCK (&slot->lock);
{
/* make epoll 'singleshot', which
means we need to re-add the fd with
epoll_ctl(EPOLL_CTL_MOD) after delivery of every
single event. This assures us that while a poller
thread has picked up and is processing an event,
another poller will not try to pick this at the same
time as well.
*/
slot->events = EPOLLPRI | EPOLLONESHOT;
slot->handler = handler;
slot->data = data;
__slot_update_events (slot, poll_in, poll_out);
epoll_event.events = slot->events;
ev_data->idx = idx;
ev_data->gen = slot->gen;
ret = epoll_ctl (event_pool->fd, EPOLL_CTL_ADD, fd,
&epoll_event);
/* check ret after UNLOCK() to avoid deadlock in
event_slot_unref()
*/
}
UNLOCK (&slot->lock);
if (ret == -1) {
gf_log ("epoll", GF_LOG_ERROR,
"failed to add fd(=%d) to epoll fd(=%d) (%s)",
fd, event_pool->fd, strerror (errno));
event_slot_unref (event_pool, slot, idx);
idx = -1;
}
/* keep slot->ref (do not event_slot_unref) if successful */
out:
return idx;
}
static void *
event_dispatch_epoll_worker (void *data)
{
struct epoll_event event;
int ret = -1;
struct event_thread_data *ev_data = data;
struct event_pool *event_pool;
int myindex = -1;
int timetodie = 0;
GF_VALIDATE_OR_GOTO ("event", ev_data, out);
event_pool = ev_data->event_pool;
myindex = ev_data->event_index;
GF_VALIDATE_OR_GOTO ("event", event_pool, out);
gf_log ("epoll", GF_LOG_INFO, "Started thread with index %d", myindex);
pthread_mutex_lock (&event_pool->mutex);
{
event_pool->activethreadcount++;
}
pthread_mutex_unlock (&event_pool->mutex);
for (;;) {
if (event_pool->eventthreadcount < myindex) {
/* ...time to die, thread count was decreased below
* this threads index */
/* Start with extra safety at this point, reducing
* lock conention in normal case when threads are not
* reconfigured always */
pthread_mutex_lock (&event_pool->mutex);
{
if (event_pool->eventthreadcount <
myindex) {
/* if found true in critical section,
* die */
event_pool->pollers[myindex - 1] = 0;
event_pool->activethreadcount--;
timetodie = 1;
pthread_cond_broadcast (&event_pool->cond);
}
}
pthread_mutex_unlock (&event_pool->mutex);
if (timetodie) {
gf_log ("epoll", GF_LOG_INFO,
"Exited thread with index %d", myindex);
goto out;
}
}
ret = epoll_wait (event_pool->fd, &event, 1, -1);
if (ret == 0)
/* timeout */
continue;
if (ret == -1 && errno == EINTR)
/* sys call */
continue;
ret = event_dispatch_epoll_handler (event_pool, &event);
}
out:
if (ev_data)
GF_FREE (ev_data);
return NULL;
}
/*
* Find unchanged files from a specified time, w.r.t to frequency, from the DB
* Input:
* query_callback : query callback fuction to handle
* result records from the query
* for_time : Time from where the file/s are not changed
* freq_write_cnt : Frequency thresold for write
* freq_read_cnt : Frequency thresold for read
* clear_counters : Clear counters (r/w) for all inodes in DB
* */
int
gf_sqlite3_find_unchanged_for_time_freq (void *db_conn,
gf_query_callback_t query_callback,
void *query_cbk_args,
gfdb_time_t *for_time,
int freq_write_cnt,
int freq_read_cnt,
gf_boolean_t clear_counters)
{
int ret = -1;
char *query_str = NULL;
gf_sql_connection_t *sql_conn = db_conn;
sqlite3_stmt *prep_stmt = NULL;
uint64_t for_time_usec = 0;
CHECK_SQL_CONN (sql_conn, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, query_callback, out);
query_str = "select GF_FILE_TB.GF_ID,"
" (select group_concat( GF_PID || ',' || FNAME || ','"
" || FPATH || ',' || W_DEL_FLAG ||',' || LINK_UPDATE , '::')"
" from GF_FLINK_TB where GF_FILE_TB.GF_ID = GF_FLINK_TB.GF_ID)"
" from GF_FILE_TB where "
/*First condition: For Writes
* Files that have write wind time smaller than for_time
* OR
* File that have write wind time greater than for_time,
* but write_frequency less than freq_write_cnt*/
"( ((" GF_COL_TB_WSEC " * " TOSTRING(GFDB_MICROSEC) " + "
GF_COL_TB_WMSEC ") < ? )"
" OR "
"( (" GF_COL_TB_WFC " < ? ) AND"
"((" GF_COL_TB_WSEC " * " TOSTRING(GFDB_MICROSEC) " + "
GF_COL_TB_WMSEC ") >= ? ) ) )"
" AND "
/*Second condition: For Reads
* Files that have read wind time smaller than for_time
* OR
* File that have read wind time greater than for_time,
* but write_frequency less than freq_write_cnt*/
"( ((" GF_COL_TB_RWSEC " * " TOSTRING(GFDB_MICROSEC) " + "
GF_COL_TB_RWMSEC ") < ? )"
" OR "
"( (" GF_COL_TB_RFC " < ? ) AND"
"((" GF_COL_TB_RWSEC " * " TOSTRING(GFDB_MICROSEC) " + "
GF_COL_TB_RWMSEC ") >= ? ) ) )";
for_time_usec = gfdb_time_2_usec(for_time);
ret = sqlite3_prepare (sql_conn->sqlite3_db_conn, query_str, -1,
&prep_stmt, 0);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_PREPARE_FAILED, "Failed preparing delete "
"statment %s : %s", query_str,
sqlite3_errmsg(sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind write wind time*/
ret = sqlite3_bind_int64 (prep_stmt, 1, for_time_usec);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding for_time_usec "
"%"PRIu64" : %s", for_time_usec,
sqlite3_errmsg(sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind write frequency thresold*/
ret = sqlite3_bind_int (prep_stmt, 2, freq_write_cnt);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding freq_write_cnt"
" %d : %s", freq_write_cnt,
sqlite3_errmsg(sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind write wind time*/
ret = sqlite3_bind_int64 (prep_stmt, 3, for_time_usec);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding for_time_usec "
"%"PRIu64" : %s", for_time_usec,
sqlite3_errmsg(sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind read wind time*/
ret = sqlite3_bind_int64 (prep_stmt, 4, for_time_usec);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding for_time_usec "
"%"PRIu64" : %s", for_time_usec,
sqlite3_errmsg(sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind read frequency thresold*/
ret = sqlite3_bind_int (prep_stmt, 5, freq_read_cnt);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding freq_read_cnt "
"%d : %s", freq_read_cnt,
sqlite3_errmsg(sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind read wind time*/
ret = sqlite3_bind_int64 (prep_stmt, 6, for_time_usec);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding for_time_usec "
"%"PRIu64" : %s", for_time_usec,
sqlite3_errmsg(sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Execute the query*/
ret = gf_sql_query_function (prep_stmt, query_callback, query_cbk_args);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_QUERY_FAILED,
"Failed Query %s", query_str);
goto out;
}
/*Clear counters*/
if (clear_counters) {
ret = gf_sql_clear_counters (sql_conn);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_CLEAR_COUNTER_FAILED, "Failed clearing "
"counters!");
goto out;
}
}
ret = 0;
out:
sqlite3_finalize(prep_stmt);
return ret;
}
int
quotad_aggregator_getlimit (rpcsvc_request_t *req)
{
call_frame_t *frame = NULL;
gf_cli_req cli_req = {{0}, };
gf_cli_rsp cli_rsp = {0};
gfs3_lookup_req args = {{0,},};
gfs3_lookup_rsp rsp = {0,};
quotad_aggregator_state_t *state = NULL;
xlator_t *this = NULL;
dict_t *dict = NULL;
int ret = -1, op_errno = 0;
char *gfid_str = NULL;
uuid_t gfid = {0};
GF_VALIDATE_OR_GOTO ("quotad-aggregator", req, err);
this = THIS;
ret = xdr_to_generic (req->msg[0], &cli_req, (xdrproc_t)xdr_gf_cli_req);
if (ret < 0) {
//failed to decode msg;
gf_log ("", GF_LOG_ERROR, "xdr decoding error");
req->rpc_err = GARBAGE_ARGS;
goto err;
}
if (cli_req.dict.dict_len) {
dict = dict_new ();
ret = dict_unserialize (cli_req.dict.dict_val,
cli_req.dict.dict_len, &dict);
if (ret < 0) {
gf_log (this->name, GF_LOG_ERROR, "Failed to "
"unserialize req-buffer to dictionary");
goto err;
}
}
ret = dict_get_str (dict, "gfid", &gfid_str);
if (ret) {
goto err;
}
uuid_parse ((const char*)gfid_str, gfid);
frame = quotad_aggregator_get_frame_from_req (req);
if (frame == NULL) {
rsp.op_errno = ENOMEM;
goto err;
}
state = frame->root->state;
state->xdata = dict;
ret = dict_set_int32 (state->xdata, QUOTA_LIMIT_KEY, 42);
if (ret)
goto err;
ret = dict_set_int32 (state->xdata, QUOTA_SIZE_KEY, 42);
if (ret)
goto err;
ret = dict_set_int32 (state->xdata, GET_ANCESTRY_PATH_KEY,42);
if (ret)
goto err;
memcpy (&args.gfid, &gfid, 16);
args.bname = alloca (req->msg[0].iov_len);
args.xdata.xdata_val = alloca (req->msg[0].iov_len);
ret = qd_nameless_lookup (this, frame, &args, state->xdata,
quotad_aggregator_getlimit_cbk);
if (ret) {
rsp.op_errno = ret;
goto err;
}
return ret;
err:
cli_rsp.op_ret = -1;
cli_rsp.op_errno = op_errno;
cli_rsp.op_errstr = "";
quotad_aggregator_getlimit_cbk (this, frame, &cli_rsp);
dict_unref (dict);
return ret;
}
/*
* Find unchanged files from a specified time from the DB
* Input:
* query_callback : query callback fuction to handle
* result records from the query
* for_time : Time from where the file/s are not changed
* */
int
gf_sqlite3_find_unchanged_for_time (void *db_conn,
gf_query_callback_t query_callback,
void *query_cbk_args,
gfdb_time_t *for_time)
{
int ret = -1;
char *query_str = NULL;
gf_sql_connection_t *sql_conn = db_conn;
sqlite3_stmt *prep_stmt = NULL;
uint64_t for_time_usec = 0;
CHECK_SQL_CONN (sql_conn, out);
GF_VALIDATE_OR_GOTO(GFDB_STR_SQLITE3, query_callback, out);
query_str = "select GF_FILE_TB.GF_ID,"
" (select group_concat( GF_PID || ',' || FNAME || ','"
" || FPATH || ',' || W_DEL_FLAG ||',' || LINK_UPDATE , '::')"
" from GF_FLINK_TB where GF_FILE_TB.GF_ID = GF_FLINK_TB.GF_ID)"
" from GF_FILE_TB where "
/*First condition: For writes*/
"((" GF_COL_TB_WSEC " * " TOSTRING(GFDB_MICROSEC) " + "
GF_COL_TB_WMSEC ") <= ? )"
" AND "
/*Second condition: For reads*/
"((" GF_COL_TB_RWSEC " * " TOSTRING(GFDB_MICROSEC) " + "
GF_COL_TB_RWMSEC ") <= ?)";
for_time_usec = gfdb_time_2_usec(for_time);
ret = sqlite3_prepare(sql_conn->sqlite3_db_conn, query_str, -1,
&prep_stmt, 0);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_PREPARE_FAILED, "Failed preparing statment %s :"
" %s", query_str,
sqlite3_errmsg(sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind write wind time*/
ret = sqlite3_bind_int64(prep_stmt, 1, for_time_usec);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding for_time_usec "
"%"PRIu64" : %s", for_time_usec,
sqlite3_errmsg(sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind read wind time*/
ret = sqlite3_bind_int64(prep_stmt, 2, for_time_usec);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding for_time_usec "
"%"PRIu64" : %s", for_time_usec,
sqlite3_errmsg(sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Execute the query*/
ret = gf_sql_query_function(prep_stmt, query_callback, query_cbk_args);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_QUERY_FAILED,
"Failed Query %s", query_str);
goto out;
}
ret = 0;
out:
sqlite3_finalize(prep_stmt);
return ret;
}
int gf_sqlite3_insert(void *db_conn, gfdb_db_record_t *gfdb_db_record)
{
int ret = -1;
gf_sql_connection_t *sql_conn = db_conn;
CHECK_SQL_CONN(sql_conn, out);
GF_VALIDATE_OR_GOTO(GFDB_STR_SQLITE3, gfdb_db_record, out);
/*This is for debugging bug. Will be removed with a bug fix*/
if ((GFDB_FOP_WIND == gfdb_db_record->gfdb_fop_path) &&
(strncmp(gfdb_db_record->file_path, "<gfid", 5) == 0)) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_SKIP_PATH,
"Skip path <gfid fop=%d",
gfdb_db_record->gfdb_fop_type);
goto out;
}
switch (gfdb_db_record->gfdb_fop_path) {
case GFDB_FOP_WIND:
ret = gf_sql_insert_wind(sql_conn, gfdb_db_record);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_INSERT_FAILED, "Failed wind insert");
goto out;
}
break;
case GFDB_FOP_UNWIND:
ret = gf_sql_insert_unwind (sql_conn, gfdb_db_record);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_INSERT_FAILED, "Failed unwind insert");
goto out;
}
break;
case GFDB_FOP_WDEL:
ret = gf_sql_update_delete_wind(sql_conn, gfdb_db_record);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_UPDATE_FAILED, "Failed updating delete "
"during wind");
goto out;
}
break;
case GFDB_FOP_UNDEL:
case GFDB_FOP_UNDEL_ALL:
ret = gf_sql_delete_unwind(sql_conn, gfdb_db_record);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_DELETE_FAILED, "Failed deleting");
goto out;
}
break;
case GFDB_FOP_INVALID:
default:
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_INVALID_FOP,
"Cannot record to DB: Invalid FOP");
goto out;
}
ret = 0;
out:
return ret;
}
/*
* Find recently changed files with a specific frequency from the DB
* Input:
* db_conn : db connection object
* query_callback : query callback fuction to handle
* result records from the query
* from_time : Time to define what is recent
* freq_write_cnt : Frequency thresold for write
* freq_read_cnt : Frequency thresold for read
* clear_counters : Clear counters (r/w) for all inodes in DB
* */
int
gf_sqlite3_find_recently_changed_files_freq (void *db_conn,
gf_query_callback_t query_callback,
void *query_cbk_args,
gfdb_time_t *from_time,
int freq_write_cnt,
int freq_read_cnt,
gf_boolean_t clear_counters)
{
int ret = -1;
char *query_str = NULL;
gf_sql_connection_t *sql_conn = db_conn;
sqlite3_stmt *prep_stmt = NULL;
uint64_t from_time_usec = 0;
char *base_query_str = NULL;
CHECK_SQL_CONN (sql_conn, out);
GF_VALIDATE_OR_GOTO(GFDB_STR_SQLITE3, query_callback, out);
ret = gf_get_basic_query_stmt (&base_query_str);
if (ret <= 0) {
goto out;
}
ret = gf_asprintf (&query_str, "%s AND "
/*First condition: For Writes*/
"( ( ((" GF_COL_TB_WSEC " * " TOSTRING(GFDB_MICROSEC) " + "
GF_COL_TB_WMSEC ") >= ? )"
" AND "" (" GF_COL_TB_WFC " >= ? ) )"
" OR "
/*Second condition: For Reads */
"( ((" GF_COL_TB_RWSEC " * " TOSTRING(GFDB_MICROSEC) " + "
GF_COL_TB_RWMSEC ") >= ?)"
" AND "" (" GF_COL_TB_RFC " >= ? ) ) )", base_query_str);
if (ret < 0) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_QUERY_FAILED,
"Failed to create query statement");
query_str = NULL;
goto out;
}
from_time_usec = gfdb_time_2_usec (from_time);
ret = sqlite3_prepare (sql_conn->sqlite3_db_conn, query_str, -1,
&prep_stmt, 0);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_PREPARE_FAILED, "Failed to prepare statment %s :"
" %s", query_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind write wind time*/
ret = sqlite3_bind_int64 (prep_stmt, 1, from_time_usec);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed to bind from_time_usec "
"%"PRIu64" : %s", from_time_usec,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind write frequency thresold*/
ret = sqlite3_bind_int (prep_stmt, 2, freq_write_cnt);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed to bind freq_write_cnt "
"%d : %s", freq_write_cnt,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind read wind time*/
ret = sqlite3_bind_int64 (prep_stmt, 3, from_time_usec);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed to bind from_time_usec "
"%"PRIu64" : %s", from_time_usec,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind read frequency thresold*/
ret = sqlite3_bind_int (prep_stmt, 4, freq_read_cnt);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed to bind freq_read_cnt "
"%d : %s", freq_read_cnt,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Execute the query*/
ret = gf_sql_query_function (prep_stmt, query_callback, query_cbk_args);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_QUERY_FAILED,
"Failed Query %s", query_str);
goto out;
}
/*Clear counters*/
if (clear_counters) {
ret = gf_sql_clear_counters (sql_conn);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_CLEAR_COUNTER_FAILED, "Failed to clear"
" counters!");
goto out;
}
}
ret = 0;
out:
sqlite3_finalize (prep_stmt);
GF_FREE (base_query_str);
GF_FREE (query_str);
return ret;
}
/**
* __exp_line_dir_parse -- Extract directory name from a line in the exports
* file.
*
* @line : The line to parse
* @dirname : Double pointer to the string we need to hold the directory name.
* If the parsing failed, the string will point to NULL, otherwise
* it will point to a valid memory region that is allocated by
* this function.
* @check_ms: If this variable is set then we cross check the directory line
* with what's in gluster's vol files and reject them if they don't
* match.
*
* @return : success: GF_EXP_PARSE_SUCCESS
* failure: GF_EXP_PARSE_ITEM_FAILURE on parse failure,
* -EINVAL on bad arguments, -ENOMEM on allocation failures,
* GF_EXP_PARSE_ITEM_NOT_IN_MOUNT_STATE if we failed to match
* with gluster's mountstate.
*
* The caller is responsible for freeing memory allocated by this function
*
* Not for external use.
*/
static int
__exp_line_dir_parse(const char *line, char **dirname, struct mount3_state *ms)
{
char *dir = NULL;
char *delim = NULL;
int ret = -EINVAL;
char *linedup = NULL;
struct mnt3_export *mnt3export = NULL;
size_t dirlen = 0;
GF_VALIDATE_OR_GOTO(GF_EXP, line, out);
GF_VALIDATE_OR_GOTO(GF_EXP, dirname, out);
/* Duplicate the line because we don't
* want to modify the original string.
*/
linedup = strdupa(line);
/* We use strtok_r () here to split the string by space/tab and get the
* the result. We only need the first result of the split.
* a simple task. It is worth noting that dirnames always have to be
* validated against gluster's vol files so if they don't
* match it will be rejected.
*/
dir = linedup;
delim = linedup + strcspn(linedup, " \t");
*delim = 0;
if (ms) {
/* Match the directory name with an existing
* export in the mount state.
*/
mnt3export = mnt3_mntpath_to_export(ms, dir, _gf_true);
if (!mnt3export) {
gf_msg_debug(GF_EXP, 0,
"%s not in mount state, "
"ignoring!",
dir);
ret = GF_EXP_PARSE_ITEM_NOT_IN_MOUNT_STATE;
goto out;
}
}
/* Directories can be 1024 bytes in length, check
* that the argument provided adheres to
* that restriction.
*/
if (strlen(dir) > DIR_MAX_LEN) {
ret = -EINVAL;
goto out;
}
/* Copy the result of the split */
dir = gf_strdup(dir);
GF_CHECK_ALLOC(dir, ret, out);
/* Ensure that trailing slashes are stripped before storing the name */
dirlen = strlen(dir);
if (dirlen > 0 && dir[dirlen - 1] == '/')
dir[dirlen - 1] = '\0';
/* Set the argument to point to the allocated string */
*dirname = dir;
ret = GF_EXP_PARSE_SUCCESS;
out:
return ret;
}
int
xlator_dynload (xlator_t *xl)
{
int ret = -1;
char *name = NULL;
void *handle = NULL;
volume_opt_list_t *vol_opt = NULL;
GF_VALIDATE_OR_GOTO ("xlator", xl, out);
INIT_LIST_HEAD (&xl->volume_options);
ret = gf_asprintf (&name, "%s/%s.so", XLATORDIR, xl->type);
if (-1 == ret) {
gf_log ("xlator", GF_LOG_ERROR, "asprintf failed");
goto out;
}
ret = -1;
gf_log ("xlator", GF_LOG_TRACE, "attempt to load file %s", name);
handle = dlopen (name, RTLD_NOW|RTLD_GLOBAL);
if (!handle) {
gf_log ("xlator", GF_LOG_WARNING, "%s", dlerror ());
goto out;
}
xl->dlhandle = handle;
if (!(xl->fops = dlsym (handle, "fops"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(fops) on %s",
dlerror ());
goto out;
}
if (!(xl->cbks = dlsym (handle, "cbks"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(cbks) on %s",
dlerror ());
goto out;
}
if (!(xl->init = dlsym (handle, "init"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(init) on %s",
dlerror ());
goto out;
}
if (!(xl->fini = dlsym (handle, "fini"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(fini) on %s",
dlerror ());
goto out;
}
if (!(xl->notify = dlsym (handle, "notify"))) {
gf_log ("xlator", GF_LOG_DEBUG,
"dlsym(notify) on %s -- neglecting", dlerror ());
}
if (!(xl->dumpops = dlsym (handle, "dumpops"))) {
gf_log ("xlator", GF_LOG_DEBUG,
"dlsym(dumpops) on %s -- neglecting", dlerror ());
}
if (!(xl->mem_acct_init = dlsym (handle, "mem_acct_init"))) {
gf_log (xl->name, GF_LOG_DEBUG,
"dlsym(mem_acct_init) on %s -- neglecting",
dlerror ());
}
if (!(xl->reconfigure = dlsym (handle, "reconfigure"))) {
gf_log ("xlator", GF_LOG_DEBUG,
"dlsym(reconfigure) on %s -- neglecting",
dlerror());
}
vol_opt = GF_CALLOC (1, sizeof (volume_opt_list_t),
gf_common_mt_volume_opt_list_t);
if (!vol_opt) {
goto out;
}
if (!(vol_opt->given_opt = dlsym (handle, "options"))) {
dlerror ();
gf_log (xl->name, GF_LOG_DEBUG,
"Strict option validation not enforced -- neglecting");
}
list_add_tail (&vol_opt->list, &xl->volume_options);
fill_defaults (xl);
ret = 0;
out:
if (name)
GF_FREE (name);
return ret;
}
/**
* _exp_line_parse -- Parse a line in an exports file into a structure
* that holds all the parts of the line. An exports
* structure has a dict of netgroups and a dict of hosts.
*
* An export line looks something like this /test @test(sec=sys,rw,anonuid=0)
* or /test @test(sec=sys,rw,anonuid=0) hostA(sec=sys,rw,anonuid=0), etc.
*
* We use regexes to parse the line into three separate pieces:
* 1) The directory (exports.h -- DIRECTORY_REGEX_PATTERN)
* 2) The netgroup if it exists (exports.h -- NETGROUP_REGEX_PATTERN)
* 3) The host if it exists (exports.h -- HOST_REGEX_PATTERN)
*
* In this case, the netgroup would be @test(sec=sys,rw,anonuid=0)
* and the host would be hostA(sec=sys,rw,anonuid=0).
*
* @line : The line to parse
* @dir : Double pointer to the struct we need to parse the line into.
* If the parsing failed, the struct will point to NULL,
* otherwise it will point to a valid memory region that is
* allocated by this function.
* @parse_full : This parameter tells us whether we should parse all the lines
* in the file, even if they are not present in gluster's config.
* The gluster config holds the volumes that it exports so
* if parse_full is set to FALSE then we will ensure that
* the export file structure holds only those volumes
* that gluster has exported. It is important to note that
* If gluster exports a volume named '/test', '/test' and all
* of its subdirectories that may be in the exports file
* are valid exports.
* @ms : The mount state that holds the list of volumes that gluster
* currently exports.
*
* @return : success: GF_EXP_PARSE_SUCCESS on success, -EINVAL on bad arguments,
* -ENOMEM on memory allocation errors,
* GF_EXP_PARSE_LINE_IGNORING if we ignored the line,
* GF_EXP_PARSE_ITEM_FAILURE if there was error parsing
* failure: NULL
*
* The caller is responsible for freeing memory allocated by this function
* The caller should free this memory using the _exp_dir_deinit () function.
*
* Not for external use.
*/
static int
_exp_line_parse(const char *line, struct export_dir **dir,
gf_boolean_t parse_full, struct mount3_state *ms)
{
struct export_dir *expdir = NULL;
char *dirstr = NULL;
dict_t *netgroups = NULL;
dict_t *hosts = NULL;
int ret = -EINVAL;
gf_boolean_t netgroups_failed = _gf_false;
GF_VALIDATE_OR_GOTO(GF_EXP, line, out);
GF_VALIDATE_OR_GOTO(GF_EXP, dir, out);
if (*line == '#' || *line == ' ' || *line == '\t' || *line == '\0' ||
*line == '\n') {
ret = GF_EXP_PARSE_LINE_IGNORING;
goto out;
}
expdir = _export_dir_init();
if (!expdir) {
*dir = NULL;
ret = -ENOMEM;
goto out;
}
/* Get the directory string from the line */
ret = __exp_line_dir_parse(line, &dirstr, ms);
if (ret < 0) {
gf_msg(GF_EXP, GF_LOG_ERROR, 0, NFS_MSG_PARSE_DIR_FAIL,
"Parsing directory failed: %s", strerror(-ret));
/* If parsing the directory failed,
* we should simply fail because there's
* nothing else we can extract from the string to make
* the data valuable.
*/
goto free_and_out;
}
/* Set the dir str */
expdir->dir_name = dirstr;
/* Parse the netgroup part of the string */
ret = __exp_line_ng_parse(line, &netgroups);
if (ret < 0) {
gf_msg(GF_EXP, GF_LOG_ERROR, -ret, NFS_MSG_PARSE_FAIL,
"Critical error: %s", strerror(-ret));
/* Return values less than 0
* indicate critical failures (null parameters,
* failure to allocate memory, etc).
*/
goto free_and_out;
}
if (ret != 0) {
if (ret == GF_EXP_PARSE_ITEM_FAILURE)
/* Cannot change to gf_msg.
* gf_msg not giving output to STDOUT
* Bug id : BZ1215017
*/
gf_log(GF_EXP, GF_LOG_WARNING, "Error parsing netgroups for: %s",
line);
/* Even though parsing failed for the netgroups we should let
* host parsing proceed.
*/
netgroups_failed = _gf_true;
}
/* Parse the host part of the string */
ret = __exp_line_host_parse(line, &hosts);
if (ret < 0) {
gf_msg(GF_EXP, GF_LOG_ERROR, -ret, NFS_MSG_PARSE_FAIL,
"Critical error: %s", strerror(-ret));
goto free_and_out;
}
if (ret != 0) {
if (ret == GF_EXP_PARSE_ITEM_FAILURE)
gf_msg(GF_EXP, GF_LOG_WARNING, 0, NFS_MSG_PARSE_FAIL,
"Error parsing hosts for: %s", line);
/* If netgroups parsing failed, AND
* host parsing failed, then there's something really
* wrong with this line, so we're just going to
* log it and fail out.
*/
if (netgroups_failed)
goto free_and_out;
}
expdir->hosts = hosts;
expdir->netgroups = netgroups;
*dir = expdir;
goto out;
free_and_out:
_export_dir_deinit(expdir);
out:
return ret;
}
static int
event_register_poll (struct event_pool *event_pool, int fd,
event_handler_t handler,
void *data, int poll_in, int poll_out)
{
int idx = -1;
GF_VALIDATE_OR_GOTO ("event", event_pool, out);
pthread_mutex_lock (&event_pool->mutex);
{
if (event_pool->count == event_pool->used)
{
event_pool->count += 256;
event_pool->reg = GF_REALLOC (event_pool->reg,
event_pool->count *
sizeof (*event_pool->reg));
if (!event_pool->reg)
goto unlock;
}
idx = event_pool->used++;
event_pool->reg[idx].fd = fd;
event_pool->reg[idx].events = POLLPRI;
event_pool->reg[idx].handler = handler;
event_pool->reg[idx].data = data;
switch (poll_in) {
case 1:
event_pool->reg[idx].events |= POLLIN;
break;
case 0:
event_pool->reg[idx].events &= ~POLLIN;
break;
case -1:
/* do nothing */
break;
default:
gf_msg ("poll", GF_LOG_ERROR, 0,
LG_MSG_INVALID_POLL_IN,
"invalid poll_in value %d", poll_in);
break;
}
switch (poll_out) {
case 1:
event_pool->reg[idx].events |= POLLOUT;
break;
case 0:
event_pool->reg[idx].events &= ~POLLOUT;
break;
case -1:
/* do nothing */
break;
default:
gf_msg ("poll", GF_LOG_ERROR, 0,
LG_MSG_INVALID_POLL_OUT,
"invalid poll_out value %d", poll_out);
break;
}
event_pool->changed = 1;
}
unlock:
pthread_mutex_unlock (&event_pool->mutex);
out:
return idx;
}
/**
* __exp_line_ng_host_str_parse -- Parse the netgroup or host string
*
* e.g. @mygroup(<options>), parsing @mygroup and (<options>)
* or myhost001.dom(<options>), parsing myhost001.dom and (<options>)
*
* @line : The line to parse
* @exp_item : Double pointer to a struct export_item
*
* @return: success: GF_PARSE_SUCCESS
* failure: GF_EXP_PARSE_ITEM_FAILURE on parse failure,
* -EINVAL on bad args, -ENOMEM on allocation errors.
*
* Not for external use.
*/
static int
__exp_line_ng_host_str_parse(char *str, struct export_item **exp_item)
{
struct export_item *item = NULL;
int ret = -EINVAL;
char *parens = NULL;
char *optstr = NULL;
struct export_options *exp_opts = NULL;
char *item_name = NULL;
GF_VALIDATE_OR_GOTO(GF_EXP, str, out);
GF_VALIDATE_OR_GOTO(GF_EXP, exp_item, out);
/* A netgroup/host string looks like this:
* @test(sec=sys,rw,anonuid=0) or host(sec=sys,rw,anonuid=0)
* We want to extract the name, 'test' or 'host'
* Again, we could setup a regex and use it here,
* but its simpler to find the '(' and copy until
* there.
*/
parens = strchr(str, '(');
if (!parens) {
/* Parse error if there are no parens. */
ret = GF_EXP_PARSE_ITEM_FAILURE;
goto out;
}
*parens = '\0'; /* Temporarily terminate it so we can do a copy */
if (strlen(str) > FQDN_MAX_LEN) {
ret = GF_EXP_PARSE_ITEM_FAILURE;
goto out;
}
/* Strip leading whitespaces */
while (*str == ' ' || *str == '\t')
str++;
item_name = gf_strdup(str);
GF_CHECK_ALLOC(item_name, ret, out);
gf_msg_trace(GF_EXP, 0, "found hostname/netgroup: %s", item_name);
/* Initialize an export item for this */
item = _export_item_init();
GF_CHECK_ALLOC(item, ret, free_and_out);
item->name = item_name;
*parens = '('; /* Restore the string */
/* Options start at the parentheses */
optstr = parens;
ret = __exp_line_opt_parse(optstr, &exp_opts);
if (ret != 0) {
/* Bubble up the error to the caller */
GF_REF_PUT(item);
goto out;
}
item->opts = exp_opts;
*exp_item = item;
ret = GF_EXP_PARSE_SUCCESS;
goto out;
free_and_out:
GF_FREE(item_name);
out:
return ret;
}
static int
gf_sql_update_link (gf_sql_connection_t *sql_conn,
char *gfid,
char *pargfid,
char *basename,
char *basepath,
char *old_pargfid,
char *old_basename,
gf_boolean_t link_consistency)
{
int ret = -1;
sqlite3_stmt *insert_stmt = NULL;
char insert_str[GFDB_SQL_STMT_SIZE] = "";
sprintf (insert_str, "INSERT INTO "
GF_FILE_LINK_TABLE
" (GF_ID, GF_PID, FNAME, FPATH,"
" W_DEL_FLAG, LINK_UPDATE) "
" VALUES (? , ?, ?, ?, 0, %d);",
link_consistency);
CHECK_SQL_CONN (sql_conn, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, gfid, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, pargfid, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, basename, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, basepath, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, old_pargfid, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, old_basename, out);
/*
*
* Delete the old link
*
* */
ret = gf_sql_delete_link (sql_conn, gfid, old_pargfid,
old_basename);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_DELETE_FAILED, "Failed deleting old link");
goto out;
}
/*
*
* insert new link
*
* */
/*Prepare statement*/
ret = sqlite3_prepare (sql_conn->sqlite3_db_conn, insert_str, -1,
&insert_stmt, 0);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_PREPARE_FAILED, "Failed preparing insert "
"statment %s : %s", insert_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind gfid*/
ret = sqlite3_bind_text (insert_stmt, 1, gfid, -1, NULL);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding gfid %s : %s",
gfid, sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind new pargfid*/
ret = sqlite3_bind_text (insert_stmt, 2, pargfid, -1, NULL);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding parent gfid %s "
": %s", pargfid,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind new basename*/
ret = sqlite3_bind_text (insert_stmt, 3, basename, -1, NULL);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding basename %s : "
"%s", basename,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind new basepath*/
ret = sqlite3_bind_text (insert_stmt, 4, basepath, -1, NULL);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding basename %s : "
"%s", basepath,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Execute the prepare statement*/
if (sqlite3_step (insert_stmt) != SQLITE_DONE) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_EXEC_FAILED,
"Failed executing the prepared stmt %s : %s",
insert_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
ret = 0;
out:
/*Free prepared statement*/
sqlite3_finalize (insert_stmt);
return ret;
}
/**
* __exp_line_host_parse -- Extract the hosts in the line
* and call helper functions to parse
* the string.
*
* The call chain goes like this:
*
* 1) __exp_line_host_parse ("/test hostip(sec=sys,rw,anonuid=0)")
* 2) __exp_line_ng_host_str_parse ("hostip(sec=sys,rw,anonuid=0)");
* 3) __exp_line_opt_parse("(sec=sys,rw,anonuid=0)");
*
*
* @line : The line to parse
* @ng_dict : Double pointer to the dict we want to
* insert hosts into.
*
* Allocates the dict, extracts host strings from the line,
* parses them into a struct export_item structure and inserts
* them in the dict.
*
* @return: success: GF_EXP_PARSE_SUCCESS
* failure: GF_EXP_PARSE_ITEM_FAILURE on parse failure,
* GF_EXP_PARSE_ITEM_NOT_FOUND if the host was not found,
* -EINVAL on bad args, -ENOMEM on allocation errors.
*
* Not for external use.
*/
static int
__exp_line_host_parse(const char *line, dict_t **host_dict)
{
dict_t *hosts = NULL;
char *strmatch = NULL;
int ret = -EINVAL;
struct export_item *exp_host = NULL;
data_t *hostdata = NULL;
GF_VALIDATE_OR_GOTO(GF_EXP, line, out);
GF_VALIDATE_OR_GOTO(GF_EXP, host_dict, out);
*host_dict = NULL;
/* Initialize a parser with the line to parse and the regex used to
* parse it.
*/
ret = parser_set_string(hostname_parser, line);
if (ret < 0) {
goto out;
}
gf_msg_trace(GF_EXP, 0, "parsing line: %s", line);
while ((strmatch = parser_get_next_match(hostname_parser))) {
if (!hosts) {
/* Allocate a new dictto store the netgroups. */
hosts = dict_new();
GF_CHECK_ALLOC(hosts, ret, free_and_out);
}
gf_msg_trace(GF_EXP, 0, "parsing hostname: %s", strmatch);
ret = __exp_line_ng_host_str_parse(strmatch, &exp_host);
if (ret != 0) {
/* Parsing or other critical error, free allocated
* memory and exit. The caller will handle the errors.
*/
_exp_dict_destroy(hosts);
goto free_and_out;
}
/* Insert export item structure into the hosts dict. */
hostdata = bin_to_data(exp_host, sizeof(*exp_host));
dict_set(hosts, exp_host->name, hostdata);
/* Free this matched string and continue parsing.*/
GF_FREE(strmatch);
}
/* If the hosts dict was not allocated, then we know that
* no matches were found.
*/
if (!exp_host) {
ret = GF_EXP_PARSE_ITEM_NOT_FOUND;
parser_unset_string(hostname_parser);
goto out;
}
ret = GF_EXP_PARSE_SUCCESS;
*host_dict = hosts;
free_and_out:
parser_unset_string(hostname_parser);
GF_FREE(strmatch);
out:
return ret;
}
static int
gf_sql_insert_write_wind_time (gf_sql_connection_t *sql_conn,
char *gfid,
gfdb_time_t *wind_time)
{
int ret = -1;
sqlite3_stmt *insert_stmt = NULL;
char *insert_str = "INSERT INTO "
GF_FILE_TABLE
"(GF_ID, W_SEC, W_MSEC, UW_SEC, UW_MSEC)"
" VALUES (?, ?, ?, 0, 0);";
CHECK_SQL_CONN (sql_conn, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, gfid, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, wind_time, out);
/*Prepare statement*/
ret = sqlite3_prepare (sql_conn->sqlite3_db_conn, insert_str, -1,
&insert_stmt, 0);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_PREPARE_FAILED, "Failed preparing insert "
"statment %s : %s", insert_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind gfid*/
ret = sqlite3_bind_text (insert_stmt, 1, gfid, -1, NULL);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding gfid %s : %s",
gfid, sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind wind secs*/
ret = sqlite3_bind_int (insert_stmt, 2, wind_time->tv_sec);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding parent wind "
"secs %ld : %s", wind_time->tv_sec,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind wind msecs*/
ret = sqlite3_bind_int (insert_stmt, 3, wind_time->tv_usec);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding parent wind "
"msecs %ld : %s", wind_time->tv_usec,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Execute the prepare statement*/
if (sqlite3_step (insert_stmt) != SQLITE_DONE) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_EXEC_FAILED,
"Failed executing the prepared stmt GFID:%s %s : %s",
gfid, insert_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
ret = 0;
out:
/*Free prepared statement*/
sqlite3_finalize (insert_stmt);
return ret;
}
transport_t *
transport_load (dict_t *options,
xlator_t *xl)
{
struct transport *trans = NULL, *return_trans = NULL;
char *name = NULL;
void *handle = NULL;
char *type = NULL;
char str[] = "ERROR";
int32_t ret = -1;
int8_t is_tcp = 0, is_unix = 0, is_ibsdp = 0;
volume_opt_list_t *vol_opt = NULL;
GF_VALIDATE_OR_GOTO("transport", options, fail);
GF_VALIDATE_OR_GOTO("transport", xl, fail);
trans = GF_CALLOC (1, sizeof (struct transport),
gf_common_mt_transport);
GF_VALIDATE_OR_GOTO("transport", trans, fail);
trans->xl = xl;
type = str;
/* Backward compatibility */
ret = dict_get_str (options, "transport-type", &type);
if (ret < 0) {
ret = dict_set_str (options, "transport-type", "socket");
if (ret < 0)
gf_log ("dict", GF_LOG_DEBUG,
"setting transport-type failed");
gf_log ("transport", GF_LOG_WARNING,
"missing 'option transport-type'. defaulting to "
"\"socket\"");
} else {
{
/* Backword compatibility to handle * /client,
* * /server.
*/
char *tmp = strchr (type, '/');
if (tmp)
*tmp = '\0';
}
is_tcp = strcmp (type, "tcp");
is_unix = strcmp (type, "unix");
is_ibsdp = strcmp (type, "ib-sdp");
if ((is_tcp == 0) ||
(is_unix == 0) ||
(is_ibsdp == 0)) {
if (is_unix == 0)
ret = dict_set_str (options,
"transport.address-family",
"unix");
if (is_ibsdp == 0)
ret = dict_set_str (options,
"transport.address-family",
"inet-sdp");
if (ret < 0)
gf_log ("dict", GF_LOG_DEBUG,
"setting address-family failed");
ret = dict_set_str (options,
"transport-type", "socket");
if (ret < 0)
gf_log ("dict", GF_LOG_DEBUG,
"setting transport-type failed");
}
}
ret = dict_get_str (options, "transport-type", &type);
if (ret < 0) {
GF_FREE (trans);
gf_log ("transport", GF_LOG_ERROR,
"'option transport-type <xx>' missing in volume '%s'",
xl->name);
goto fail;
}
ret = gf_asprintf (&name, "%s/%s.so", TRANSPORTDIR, type);
if (-1 == ret) {
gf_log ("transport", GF_LOG_ERROR, "asprintf failed");
goto fail;
}
gf_log ("transport", GF_LOG_DEBUG,
"attempt to load file %s", name);
handle = dlopen (name, RTLD_NOW|RTLD_GLOBAL);
if (handle == NULL) {
gf_log ("transport", GF_LOG_ERROR, "%s", dlerror ());
gf_log ("transport", GF_LOG_ERROR,
"volume '%s': transport-type '%s' is not valid or "
"not found on this machine",
xl->name, type);
GF_FREE (name);
GF_FREE (trans);
goto fail;
}
GF_FREE (name);
trans->ops = dlsym (handle, "tops");
if (trans->ops == NULL) {
gf_log ("transport", GF_LOG_ERROR,
"dlsym (transport_ops) on %s", dlerror ());
GF_FREE (trans);
goto fail;
}
trans->init = dlsym (handle, "init");
if (trans->init == NULL) {
gf_log ("transport", GF_LOG_ERROR,
"dlsym (gf_transport_init) on %s", dlerror ());
GF_FREE (trans);
goto fail;
}
trans->fini = dlsym (handle, "fini");
if (trans->fini == NULL) {
gf_log ("transport", GF_LOG_ERROR,
"dlsym (gf_transport_fini) on %s", dlerror ());
GF_FREE (trans);
goto fail;
}
vol_opt = GF_CALLOC (1, sizeof (volume_opt_list_t),
gf_common_mt_volume_opt_list_t);
vol_opt->given_opt = dlsym (handle, "options");
if (vol_opt->given_opt == NULL) {
gf_log ("transport", GF_LOG_DEBUG,
"volume option validation not specified");
} else {
list_add_tail (&vol_opt->list, &xl->volume_options);
if (-1 ==
validate_xlator_volume_options (xl,
vol_opt->given_opt)) {
gf_log ("transport", GF_LOG_ERROR,
"volume option validation failed");
GF_FREE (trans);
goto fail;
}
}
ret = trans->init (trans);
if (ret != 0) {
gf_log ("transport", GF_LOG_ERROR,
"'%s' initialization failed", type);
GF_FREE (trans);
goto fail;
}
pthread_mutex_init (&trans->lock, NULL);
return_trans = trans;
fail:
return return_trans;
}
/*Update write/read times for both wind and unwind*/
static int
gf_update_time (gf_sql_connection_t *sql_conn,
char *gfid,
gfdb_time_t *update_time,
gf_boolean_t record_counter,
gf_boolean_t is_wind,
gf_boolean_t is_read)
{
int ret = -1;
sqlite3_stmt *update_stmt = NULL;
char update_str[1024] = "";
char *freq_cntr_str = NULL;
CHECK_SQL_CONN (sql_conn, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, gfid, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, update_time, out);
/*
* Constructing the prepare statment string.
*
* */
/*For write time*/
if (!is_read) {
if (is_wind) {
/*if record counter is on*/
freq_cntr_str = (record_counter) ?
", WRITE_FREQ_CNTR = WRITE_FREQ_CNTR + 1" : "";
/*Prefectly safe as we will not go array of bound*/
sprintf (update_str, "UPDATE "
GF_FILE_TABLE
" SET W_SEC = ?, W_MSEC = ? "
" %s"/*place for read freq counters*/
" WHERE GF_ID = ? ;", freq_cntr_str);
} else {
/*Prefectly safe as we will not go array of bound*/
sprintf (update_str, "UPDATE "
GF_FILE_TABLE
" SET UW_SEC = ?, UW_MSEC = ? ;");
}
}
/*For Read Time update*/
else {
if (is_wind) {
/*if record counter is on*/
freq_cntr_str = (record_counter) ?
", READ_FREQ_CNTR = READ_FREQ_CNTR + 1" : "";
/*Prefectly safe as we will not go array of bound*/
sprintf (update_str, "UPDATE "
GF_FILE_TABLE
" SET W_READ_SEC = ?, W_READ_MSEC = ? "
" %s"/*place for read freq counters*/
" WHERE GF_ID = ? ;", freq_cntr_str);
} else {
/*Prefectly safe as we will not go array of bound*/
sprintf (update_str, "UPDATE "
GF_FILE_TABLE
" SET UW_READ_SEC = ?, UW_READ_MSEC = ? ;");
}
}
/*Prepare statement*/
ret = sqlite3_prepare (sql_conn->sqlite3_db_conn, update_str, -1,
&update_stmt, 0);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_PREPARE_FAILED, "Failed preparing insert "
"statment %s : %s", update_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind time secs*/
ret = sqlite3_bind_int (update_stmt, 1, update_time->tv_sec);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding parent wind "
"secs %ld : %s", update_time->tv_sec,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind time msecs*/
ret = sqlite3_bind_int (update_stmt, 2, update_time->tv_usec);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding parent wind "
"msecs %ld : %s", update_time->tv_usec,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind gfid*/
ret = sqlite3_bind_text (update_stmt, 3, gfid, -1, NULL);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding gfid %s : %s",
gfid, sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Execute the prepare statement*/
if (sqlite3_step (update_stmt) != SQLITE_DONE) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_EXEC_FAILED,
"Failed executing the prepared stmt %s : %s",
update_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
ret = 0;
out:
/*Free prepared statement*/
sqlite3_finalize (update_stmt);
return ret;
}
int
gf_sql_delete_unwind (gf_sql_connection_t *sql_conn,
gfdb_db_record_t *gfdb_db_record)
{
int ret = -1;
char *gfid_str = NULL;
char *pargfid_str = NULL;
gfdb_time_t *modtime = NULL;
CHECK_SQL_CONN (sql_conn, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, gfdb_db_record, out);
gfid_str = gf_strdup (uuid_utoa(gfdb_db_record->gfid));
if (!gfid_str) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_CREATE_FAILED, "Creating gfid string failed.");
goto out;
}
/*Nuke all the entries for this GFID from DB*/
if (gfdb_db_record->gfdb_fop_path == GFDB_FOP_UNDEL_ALL) {
gf_sql_delete_all(sql_conn, gfid_str);
}
/*Remove link entries only*/
else if (gfdb_db_record->gfdb_fop_path == GFDB_FOP_UNDEL) {
pargfid_str = gf_strdup(uuid_utoa(gfdb_db_record->pargfid));
if (!pargfid_str) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_CREATE_FAILED, "Creating pargfid_str "
"string failed.");
goto out;
}
/* Special performance case:
* Updating wind time in unwind for delete. This is done here
* as in the wind path we will not know whether its the last
* link or not. For a last link there is not use to update any
* wind or unwind time!*/
if (gfdb_db_record->do_record_times) {
/*Update the wind write times*/
modtime = &gfdb_db_record->gfdb_wind_change_time;
ret = gf_update_time (sql_conn, gfid_str, modtime,
gfdb_db_record->do_record_counters,
_gf_true,
isreadfop (gfdb_db_record->gfdb_fop_type));
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_UPDATE_FAILED,
"Failed update wind time in DB");
goto out;
}
}
modtime = &gfdb_db_record->gfdb_unwind_change_time;
ret = gf_sql_delete_link(sql_conn, gfid_str, pargfid_str,
gfdb_db_record->file_name);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_DELETE_FAILED, "Failed deleting link");
goto out;
}
if (gfdb_db_record->do_record_times &&
gfdb_db_record->do_record_uwind_time) {
ret = gf_update_time (sql_conn, gfid_str, modtime,
gfdb_db_record->do_record_counters,
_gf_false,
isreadfop(gfdb_db_record->gfdb_fop_type));
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_UPDATE_FAILED, "Failed update "
"unwind time in DB");
goto out;
}
}
} else {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_INVALID_UPLINK, "Invalid unlink option");
goto out;
}
ret = 0;
out:
GF_FREE (gfid_str);
GF_FREE (pargfid_str);
return ret;
}
int
gf_sql_insert_wind (gf_sql_connection_t *sql_conn,
gfdb_db_record_t *gfdb_db_record)
{
int ret = -1;
gfdb_time_t *modtime = NULL;
char *pargfid_str = NULL;
char *gfid_str = NULL;
char *old_pargfid_str = NULL;
gf_boolean_t its_wind = _gf_true;/*remains true for this function*/
CHECK_SQL_CONN (sql_conn, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, gfdb_db_record, out);
gfid_str = gf_strdup (uuid_utoa (gfdb_db_record->gfid));
if (!gfid_str) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_CREATE_FAILED, "Creating gfid string failed.");
goto out;
}
modtime = &gfdb_db_record->gfdb_wind_change_time;
/* handle all dentry based operations */
if (isdentryfop (gfdb_db_record->gfdb_fop_type)) {
/*Parent GFID is always set*/
pargfid_str = gf_strdup (uuid_utoa (gfdb_db_record->pargfid));
if (!pargfid_str) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_CREATE_FAILED, "Creating gfid string "
"failed.");
goto out;
}
/* handle create, mknod */
if (isdentrycreatefop (gfdb_db_record->gfdb_fop_type)) {
/*insert link*/
ret = gf_sql_insert_link(sql_conn,
gfid_str, pargfid_str,
gfdb_db_record->file_name,
gfdb_db_record->file_path,
gfdb_db_record->link_consistency,
gfdb_db_record->ignore_errors);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_INSERT_FAILED, "Failed "
"inserting link in DB");
goto out;
}
gfdb_db_record->islinkupdate = gfdb_db_record->
link_consistency;
/*
* Only for create/mknod insert wind time
* for the first time
* */
ret = gf_sql_insert_write_wind_time (sql_conn, gfid_str,
modtime);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_INSERT_FAILED, "Failed "
"inserting wind time in DB");
goto out;
}
goto out;
}
/*handle rename, link */
else {
/*rename*/
if (strlen (gfdb_db_record->old_file_name) != 0) {
old_pargfid_str = gf_strdup (uuid_utoa (
gfdb_db_record->old_pargfid));
if (!old_pargfid_str) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR,
0, LG_MSG_CREATE_FAILED,
"Creating gfid string failed.");
goto out;
}
ret = gf_sql_update_link (sql_conn, gfid_str,
pargfid_str,
gfdb_db_record->file_name,
gfdb_db_record->file_path,
old_pargfid_str,
gfdb_db_record->old_file_name,
gfdb_db_record->
link_consistency);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR,
0, LG_MSG_UPDATE_FAILED,
"Failed updating link");
goto out;
}
gfdb_db_record->islinkupdate = gfdb_db_record->
link_consistency;
}
/*link*/
else {
ret = gf_sql_insert_link (sql_conn,
gfid_str, pargfid_str,
gfdb_db_record->file_name,
gfdb_db_record->file_path,
gfdb_db_record->link_consistency,
gfdb_db_record->ignore_errors);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR,
0, LG_MSG_INSERT_FAILED,
"Failed inserting link in DB");
goto out;
}
gfdb_db_record->islinkupdate = gfdb_db_record->
link_consistency;
}
}
}
/* update times only when said!*/
if (gfdb_db_record->do_record_times) {
/*All fops update times read or write*/
ret = gf_update_time (sql_conn, gfid_str, modtime,
gfdb_db_record->do_record_counters,
its_wind,
isreadfop (gfdb_db_record->gfdb_fop_type));
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_UPDATE_FAILED, "Failed update wind time"
" in DB");
goto out;
}
}
ret = 0;
out:
GF_FREE (gfid_str);
GF_FREE (pargfid_str);
GF_FREE (old_pargfid_str);
return ret;
}
static inline int
gf_sql_delete_link (gf_sql_connection_t *sql_conn,
char *gfid,
char *pargfid,
char *basename)
{
int ret = -1;
sqlite3_stmt *delete_stmt = NULL;
char *delete_str = "DELETE FROM "
GF_FILE_LINK_TABLE
" WHERE GF_ID = ? AND GF_PID = ?"
" AND FNAME = ?;";
CHECK_SQL_CONN (sql_conn, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, gfid, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, pargfid, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, basename, out);
/*Prepare statement*/
ret = sqlite3_prepare (sql_conn->sqlite3_db_conn, delete_str, -1,
&delete_stmt, 0);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_PREPARE_FAILED, "Failed preparing delete "
"statment %s : %s", delete_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind gfid*/
ret = sqlite3_bind_text (delete_stmt, 1, gfid, -1, NULL);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED,
"Failed binding gfid %s : %s", gfid,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind pargfid*/
ret = sqlite3_bind_text (delete_stmt, 2, pargfid, -1, NULL);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding parent gfid %s "
": %s", pargfid,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind basename*/
ret = sqlite3_bind_text (delete_stmt, 3, basename, -1, NULL);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding basename %s : "
"%s", basename,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Execute the prepare statement*/
if (sqlite3_step(delete_stmt) != SQLITE_DONE) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_EXEC_FAILED,
"Failed executing the prepared stmt %s : %s",
delete_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
ret = 0;
out:
/*Free prepared statement*/
sqlite3_finalize (delete_stmt);
return ret;
}
int
gf_sql_insert_unwind (gf_sql_connection_t *sql_conn,
gfdb_db_record_t *gfdb_db_record)
{
int ret = -1;
gfdb_time_t *modtime = NULL;
gf_boolean_t its_wind = _gf_true;/*remains true for this function*/
char *gfid_str = NULL;
char *pargfid_str = NULL;
CHECK_SQL_CONN (sql_conn, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, gfdb_db_record, out);
gfid_str = gf_strdup (uuid_utoa(gfdb_db_record->gfid));
if (!gfid_str) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_CREATE_FAILED, "Creating gfid string failed.");
goto out;
}
/*Only update if recording unwind is set*/
if (gfdb_db_record->do_record_times &&
gfdb_db_record->do_record_uwind_time) {
modtime = &gfdb_db_record->gfdb_unwind_change_time;
ret = gf_update_time (sql_conn, gfid_str, modtime,
gfdb_db_record->do_record_counters,
(!its_wind),
isreadfop (gfdb_db_record->gfdb_fop_type));
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_UPDATE_FAILED, "Failed update unwind "
"time in DB");
goto out;
}
}
/*For link creation and changes we use link updated*/
if (gfdb_db_record->islinkupdate &&
isdentryfop(gfdb_db_record->gfdb_fop_type)) {
pargfid_str = gf_strdup(uuid_utoa(gfdb_db_record->pargfid));
if (!pargfid_str) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_CREATE_FAILED,
"Creating pargfid_str string failed.");
goto out;
}
ret = gf_sql_update_link_flags (sql_conn, gfid_str, pargfid_str,
gfdb_db_record->file_name, 0, _gf_true);
if (ret) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_UPDATE_FAILED, "Failed updating link "
"flags in unwind");
goto out;
}
}
ret = 0;
out:
GF_FREE (gfid_str);
GF_FREE (pargfid_str);
return ret;
}
static inline int
gf_sql_delete_all (gf_sql_connection_t *sql_conn,
char *gfid)
{
int ret = -1;
sqlite3_stmt *delete_file_stmt = NULL;
sqlite3_stmt *delete_link_stmt = NULL;
char *delete_link_str = "DELETE FROM "
GF_FILE_LINK_TABLE
" WHERE GF_ID = ? ;";
char *delete_file_str = "DELETE FROM "
GF_FILE_TABLE
" WHERE GF_ID = ? ;";
CHECK_SQL_CONN (sql_conn, out);
GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, gfid, out);
/*
* Delete all links associated with this GFID
*
* */
/*Prepare statement for delete all links*/
ret = sqlite3_prepare(sql_conn->sqlite3_db_conn, delete_link_str, -1,
&delete_link_stmt, 0);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_PREPARE_FAILED, "Failed preparing delete "
"statment %s : %s", delete_link_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind gfid*/
ret = sqlite3_bind_text (delete_link_stmt, 1, gfid, -1, NULL);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding gfid %s : %s",
gfid, sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Execute the prepare statement*/
if (sqlite3_step (delete_link_stmt) != SQLITE_DONE) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_EXEC_FAILED,
"Failed executing the prepared stmt %s : %s",
delete_link_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*
* Delete entry from file table associated with this GFID
*
* */
/*Prepare statement for delete all links*/
ret = sqlite3_prepare (sql_conn->sqlite3_db_conn, delete_file_str, -1,
&delete_file_stmt, 0);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_PREPARE_FAILED, "Failed preparing delete "
"statment %s : %s", delete_file_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Bind gfid*/
ret = sqlite3_bind_text (delete_file_stmt, 1, gfid, -1, NULL);
if (ret != SQLITE_OK) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
LG_MSG_BINDING_FAILED, "Failed binding gfid %s : %s",
gfid, sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
/*Execute the prepare statement*/
if (sqlite3_step (delete_file_stmt) != SQLITE_DONE) {
gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_EXEC_FAILED,
"Failed executing the prepared stmt %s : %s",
delete_file_str,
sqlite3_errmsg (sql_conn->sqlite3_db_conn));
ret = -1;
goto out;
}
out:
/*Free prepared statement*/
sqlite3_finalize (delete_file_stmt);
sqlite3_finalize (delete_link_stmt);
return ret;
}
int
xlator_volopt_dynload (char *xlator_type, void **dl_handle,
volume_opt_list_t *opt_list)
{
int ret = -1;
char *name = NULL;
void *handle = NULL;
volume_opt_list_t *vol_opt = NULL;
GF_VALIDATE_OR_GOTO ("xlator", xlator_type, out);
GF_ASSERT (dl_handle);
if (*dl_handle)
if (dlclose (*dl_handle))
gf_log ("xlator", GF_LOG_WARNING, "Unable to close "
"previously opened handle( may be stale)."
"Ignoring the invalid handle");
ret = gf_asprintf (&name, "%s/%s.so", XLATORDIR, xlator_type);
if (-1 == ret) {
gf_log ("xlator", GF_LOG_ERROR, "asprintf failed");
goto out;
}
ret = -1;
gf_log ("xlator", GF_LOG_TRACE, "attempt to load file %s", name);
handle = dlopen (name, RTLD_NOW|RTLD_GLOBAL);
if (!handle) {
gf_log ("xlator", GF_LOG_WARNING, "%s", dlerror ());
goto out;
}
*dl_handle = handle;
vol_opt = GF_CALLOC (1, sizeof (volume_opt_list_t),
gf_common_mt_volume_opt_list_t);
if (!vol_opt) {
goto out;
}
if (!(vol_opt->given_opt = dlsym (handle, "options"))) {
dlerror ();
gf_log ("xlator", GF_LOG_DEBUG,
"Strict option validation not enforced -- neglecting");
}
opt_list->given_opt = vol_opt->given_opt;
INIT_LIST_HEAD (&vol_opt->list);
list_add_tail (&vol_opt->list, &opt_list->list);
ret = 0;
out:
GF_FREE (name);
gf_log ("xlator", GF_LOG_DEBUG, "Returning %d", ret);
return ret;
}