static int lock_db(const char *dbpath, const char *dbflags)
{
struct tdb_context *tdb;
int tdb_flags;
/* No error checking since CTDB always passes sane values */
tdb_flags = strtol(dbflags, NULL, 0);
tdb = tdb_open(dbpath, 0, tdb_flags, O_RDWR, 0600);
if (tdb == NULL) {
fprintf(stderr, "%s: Error opening database %s\n", progname, dbpath);
return 1;
}
set_priority();
if (tdb_lockall(tdb) < 0) {
fprintf(stderr, "%s: Error getting db lock (%s)\n",
progname, tdb_errorstr(tdb));
return 1;
}
reset_priority();
return 0;
}
/*
* Processing if the wait task is released (For TA_INHERIT only)
*/
LOCAL void mtx_rel_wai( TCB *tcb )
{
MTXCB *mtxcb;
TCB *mtxtsk;
mtxcb = get_mtxcb(tcb->wid);
mtxtsk = mtxcb->mtxtsk;
if ( mtxtsk->priority == tcb->priority ) {
/* Since the highest priority of the lock wait task might
become lower, adjust this priority */
reset_priority(mtxtsk);
}
}
/*
* Processing if the priority of wait task changes
*/
LOCAL void mtx_chg_pri( TCB *tcb, INT oldpri )
{
MTXCB *mtxcb;
TCB *mtxtsk;
mtxcb = get_mtxcb(tcb->wid);
gcb_change_priority((GCB*)mtxcb, tcb);
if ( (mtxcb->mtxatr & TA_CEILING) == TA_INHERIT ) {
mtxtsk = mtxcb->mtxtsk;
if ( mtxtsk->priority > tcb->priority ) {
/* Since the highest priority of the lock wait task
became higher, raise the lock get task priority
higher */
change_task_priority(mtxtsk, tcb->priority);
} else if ( mtxtsk->priority == oldpri ) {
/* Since the highest priority of the lock wait task
might become lower, adjust this priority */
reset_priority(mtxtsk);
}
}
}
static int lock_record(const char *dbpath, const char *dbflags, const char *dbkey)
{
TDB_DATA key;
struct tdb_context *tdb;
int tdb_flags;
/* No error checking since CTDB always passes sane values */
tdb_flags = strtol(dbflags, NULL, 0);
/* Convert hex key to key */
if (strcmp(dbkey, "NULL") == 0) {
key.dptr = NULL;
key.dsize = 0;
} else {
key.dptr = hex_decode_talloc(NULL, dbkey, &key.dsize);
}
tdb = tdb_open(dbpath, 0, tdb_flags, O_RDWR, 0600);
if (tdb == NULL) {
fprintf(stderr, "%s: Error opening database %s\n", progname, dbpath);
return 1;
}
set_priority();
if (tdb_chainlock(tdb, key) < 0) {
fprintf(stderr, "%s: Error getting record lock (%s)\n",
progname, tdb_errorstr(tdb));
return 1;
}
reset_priority();
return 0;
}
