Esempio n. 1
0
/**
 * non-declaration statement
 */
do_statement () {
        if (amatch ("if", 2)) {
                doif ();
                lastst = STIF;
        } else if (amatch ("while", 5)) {
                dowhile ();
                lastst = STWHILE;
        } else if (amatch ("switch", 6)) {
                doswitch ();
                lastst = STSWITCH;
        } else if (amatch ("do", 2)) {
                dodo ();
                need_semicolon ();
                lastst = STDO;
        } else if (amatch ("for", 3)) {
                dofor ();
                lastst = STFOR;
        } else if (amatch ("return", 6)) {
                doreturn ();
                need_semicolon ();
                lastst = STRETURN;
        } else if (amatch ("break", 5)) {
                dobreak ();
                need_semicolon ();
                lastst = STBREAK;
        } else if (amatch ("continue", 8)) {
                docont ();
                need_semicolon ();
                lastst = STCONT;
        } else if (match (";"))
                ;
        else if (amatch ("case", 4)) {
                docase ();
                lastst = statement (NO);
        } else if (amatch ("default", 7)) {
                dodefault ();
                lastst = statement (NO);
        } else if (match ("__asm__")) {
                doasm ();
                lastst = STASM;
        } else if (match("#")) {
                kill();
        } else if (match ("{"))
                do_compound (NO);
        else {
                expression (YES);
/*              if (match (":")) {
                        dolabel ();
                        lastst = statement (NO);
                } else {
*/                      need_semicolon ();
                        lastst = STEXP;
/*              }
*/      }
}
int
dsl_prop_get_dd(dsl_dir_t *dd, const char *propname,
    int intsz, int numint, void *buf, char *setpoint)
{
	int err = ENOENT;
	objset_t *mos = dd->dd_pool->dp_meta_objset;
	zfs_prop_t prop;

	ASSERT(RW_LOCK_HELD(&dd->dd_pool->dp_config_rwlock));

	if (setpoint)
		setpoint[0] = '\0';

	prop = zfs_name_to_prop(propname);

	/*
	 * Note: dd may be NULL, therefore we shouldn't dereference it
	 * ouside this loop.
	 */
	for (; dd != NULL; dd = dd->dd_parent) {
		ASSERT(RW_LOCK_HELD(&dd->dd_pool->dp_config_rwlock));
		err = zap_lookup(mos, dd->dd_phys->dd_props_zapobj,
		    propname, intsz, numint, buf);
		if (err != ENOENT) {
			if (setpoint)
				dsl_dir_name(dd, setpoint);
			break;
		}

		/*
		 * Break out of this loop for non-inheritable properties.
		 */
		if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop))
			break;
	}
	if (err == ENOENT)
		err = dodefault(propname, intsz, numint, buf);

	return (err);
}
Esempio n. 3
0
int
dsl_prop_get_dd(dsl_dir_t *dd, const char *propname,
    int intsz, int numints, void *buf, char *setpoint, boolean_t snapshot)
{
	int err = ENOENT;
	dsl_dir_t *target = dd;
	objset_t *mos = dd->dd_pool->dp_meta_objset;
	zfs_prop_t prop;
	boolean_t inheritable;
	boolean_t inheriting = B_FALSE;
	char *inheritstr;
	char *recvdstr;

	ASSERT(dsl_pool_config_held(dd->dd_pool));

	if (setpoint)
		setpoint[0] = '\0';

	prop = zfs_name_to_prop(propname);
	inheritable = (prop == ZPROP_INVAL || zfs_prop_inheritable(prop));
	inheritstr = kmem_asprintf("%s%s", propname, ZPROP_INHERIT_SUFFIX);
	recvdstr = kmem_asprintf("%s%s", propname, ZPROP_RECVD_SUFFIX);

	/*
	 * Note: dd may become NULL, therefore we shouldn't dereference it
	 * after this loop.
	 */
	for (; dd != NULL; dd = dd->dd_parent) {
		if (dd != target || snapshot) {
			if (!inheritable)
				break;
			inheriting = B_TRUE;
		}

		/* Check for a local value. */
		err = zap_lookup(mos, dsl_dir_phys(dd)->dd_props_zapobj,
		    propname, intsz, numints, buf);
		if (err != ENOENT) {
			if (setpoint != NULL && err == 0)
				dsl_dir_name(dd, setpoint);
			break;
		}

		/*
		 * Skip the check for a received value if there is an explicit
		 * inheritance entry.
		 */
		err = zap_contains(mos, dsl_dir_phys(dd)->dd_props_zapobj,
		    inheritstr);
		if (err != 0 && err != ENOENT)
			break;

		if (err == ENOENT) {
			/* Check for a received value. */
			err = zap_lookup(mos, dsl_dir_phys(dd)->dd_props_zapobj,
			    recvdstr, intsz, numints, buf);
			if (err != ENOENT) {
				if (setpoint != NULL && err == 0) {
					if (inheriting) {
						dsl_dir_name(dd, setpoint);
					} else {
						(void) strcpy(setpoint,
						    ZPROP_SOURCE_VAL_RECVD);
					}
				}
				break;
			}
		}

		/*
		 * If we found an explicit inheritance entry, err is zero even
		 * though we haven't yet found the value, so reinitializing err
		 * at the end of the loop (instead of at the beginning) ensures
		 * that err has a valid post-loop value.
		 */
		err = SET_ERROR(ENOENT);
	}

	if (err == ENOENT)
		err = dodefault(propname, intsz, numints, buf);

	strfree(inheritstr);
	strfree(recvdstr);

	return (err);
}