C++ prop_object_release函数代码示例

static void
fd_set_properties(struct fd_softc *fd)
{
	prop_dictionary_t disk_info, odisk_info, geom;
	const struct fd_type *fdt;
	int secsize;

	fdt = fd->sc_type;
	if (fdt == NULL) {
		fdt = fd->sc_deftype;
		if (fdt == NULL)
			return;
	}

	disk_info = prop_dictionary_create();

	geom = prop_dictionary_create();

	prop_dictionary_set_uint64(geom, "sectors-per-unit",
	    fdt->size);

	switch (fdt->secsize) {
	case 2:
		secsize = 512;
		break;
	case 3:
		secsize = 1024;
		break;
	default:
		secsize = 0;
	}

	prop_dictionary_set_uint32(geom, "sector-size",
	    secsize);

	prop_dictionary_set_uint16(geom, "sectors-per-track",
	    fdt->sectrac);

	prop_dictionary_set_uint16(geom, "tracks-per-cylinder",
	    fdt->heads);

	prop_dictionary_set_uint64(geom, "cylinders-per-unit",
	    fdt->cyls);

	prop_dictionary_set(disk_info, "geometry", geom);
	prop_object_release(geom);

	prop_dictionary_set(device_properties(fd->sc_dev),
	    "disk-info", disk_info);

	/*
	 * Don't release disk_info here; we keep a reference to it.
	 * disk_detach() will release it when we go away.
	 */

	odisk_info = fd->sc_dk.dk_info;
	fd->sc_dk.dk_info = disk_info;
	if (odisk_info)
		prop_object_release(odisk_info);
}

int
show_pkg_info_from_metadir(struct xbps_handle *xhp,
			   const char *pkgname,
			   const char *option)
{
	prop_dictionary_t d, pkgdb_d;
	const char *instdate, *pname;
	bool autoinst;

	d = xbps_dictionary_from_metadata_plist(xhp, pkgname, XBPS_PKGPROPS);
	if (d == NULL)
		return EINVAL;

	prop_dictionary_get_cstring_nocopy(d, "pkgname", &pname);
	pkgdb_d = xbps_pkgdb_get_pkgd(xhp, pname, false);
	if (pkgdb_d == NULL) {
		prop_object_release(d);
		return EINVAL;
	}
	if (prop_dictionary_get_cstring_nocopy(pkgdb_d,
	    "install-date", &instdate))
		prop_dictionary_set_cstring_nocopy(d, "install-date",
		    instdate);

	if (prop_dictionary_get_bool(pkgdb_d, "automatic-install", &autoinst))
		prop_dictionary_set_bool(d, "automatic-install", autoinst);

	if (option == NULL)
		show_pkg_info(d);
	else
		show_pkg_info_one(d, option);

	prop_object_release(d);
	return 0;
}

int
npfctl_remove_rule(u_long cmd, void *data)
{
	struct plistref *pref = data;
	prop_dictionary_t dict, errdict;
	prop_object_t obj;
	const char *name;
	int error, numrules;

	/* Retrieve and construct the rule. */
	error = prop_dictionary_copyin_ioctl(pref, cmd, &dict);
	if (error) {
		return error;
	}

	/* Dictionary for error reporting. */
	errdict = prop_dictionary_create();

	obj = prop_dictionary_get(dict, "name");
	name = prop_string_cstring_nocopy(obj);
	npf_rule_t *rl;
	error = npf_mk_singlerule(dict, prop_array_create(), &rl, errdict);

	npf_core_enter();
	numrules = npf_named_ruleset_remove(name, npf_core_ruleset(), rl);
	npf_core_exit();
	prop_object_release(dict);

	/* Error report. */
	prop_dictionary_set_int32(errdict, "errno", error);
	prop_dictionary_set_int32(errdict, "numrules", numrules);
	prop_dictionary_copyout_ioctl(pref, cmd, errdict);
	prop_object_release(errdict);
	return error;
}

static bool
_prop_array_internalize_continue(prop_stack_t stack,
    prop_object_t *obj,
    struct _prop_object_internalize_context *ctx,
    void *data, prop_object_t child)
{
	prop_array_t array;

	_PROP_ASSERT(data == NULL);

	if (child == NULL)
		goto bad; /* Element could not be parsed. */

	array = *obj;

	if (prop_array_add(array, child) == false) {
		prop_object_release(child);
		goto bad;
	}
	prop_object_release(child);

	/*
	 * Current element is processed and added, look for next.
	 */
	return (_prop_array_internalize_body(stack, obj, ctx));

 bad:
	prop_object_release(*obj);
	*obj = NULL;
	return (true);
}

static int
hdaudioctl_list(int fd)
{
	prop_dictionary_t request, response;
	prop_dictionary_t dict;
	prop_object_iterator_t iter;
	prop_object_t obj;
	prop_array_t array;
	uint16_t nid, codecid;
	uint16_t vendor, product;
	uint32_t subsystem;
	const char *device = NULL;
	int error;

	request = prop_dictionary_create();
	if (request == NULL) {
		fprintf(stderr, "out of memory\n");
		return ENOMEM;
	}

	error = prop_dictionary_sendrecv_ioctl(request, fd,
	    HDAUDIO_FGRP_INFO, &response);
	if (error != 0) {
		perror("HDAUDIO_FGRP_INFO failed");
		return error;
	}

	array = prop_dictionary_get(response, "function-group-info");
	iter = prop_array_iterator(array);
	prop_object_iterator_reset(iter);
	while ((obj = prop_object_iterator_next(iter)) != NULL) {
		dict = (prop_dictionary_t)obj;
		prop_dictionary_get_uint16(dict, "codecid", &codecid);
		prop_dictionary_get_uint16(dict, "nid", &nid);
		prop_dictionary_get_uint16(dict, "vendor-id", &vendor);
		prop_dictionary_get_uint16(dict, "product-id", &product);
		prop_dictionary_get_uint32(dict, "subsystem-id", &subsystem);
		prop_dictionary_get_cstring_nocopy(dict, "device", &device);

		printf("codecid 0x%02X nid 0x%02X vendor 0x%04X "
		    "product 0x%04X subsystem 0x%08X device %s\n",
		    codecid, nid, vendor, product, subsystem,
		    device ? device : "<none>");
	}

	prop_object_release(array);
	prop_object_release(response);
	prop_object_release(request);

	return 0;
}

/*
 * prop_object_iterator_release --
 *	Release the object iterator.
 */
void
prop_object_iterator_release(prop_object_iterator_t pi)
{

	prop_object_release(pi->pi_obj);
	_PROP_FREE(pi, M_TEMP);
}

/*
 * npfctl_sessions_save: construct a list of sessions and export for saving.
 */
int
npfctl_sessions_save(u_long cmd, void *data)
{
	struct plistref *pref = data;
	prop_dictionary_t sesdict;
	prop_array_t selist, nplist;
	int error;

	/* Create a dictionary and two lists. */
	sesdict = prop_dictionary_create();
	selist = prop_array_create();
	nplist = prop_array_create();

	/* Save the sessions. */
	error = npf_session_save(selist, nplist);
	if (error) {
		goto fail;
	}

	/* Set the session list, NAT policy list and export the dictionary. */
	prop_dictionary_set(sesdict, "session-list", selist);
	prop_dictionary_set(sesdict, "nat-policy-list", nplist);
	error = prop_dictionary_copyout_ioctl(pref, cmd, sesdict);
fail:
	prop_object_release(sesdict);
	return error;
}

static bool
_prop_array_internalize_body(prop_stack_t stack, prop_object_t *obj,
    struct _prop_object_internalize_context *ctx)
{
	prop_array_t array = *obj;

	_PROP_ASSERT(array != NULL);

	/* Fetch the next tag. */
	if (_prop_object_internalize_find_tag(ctx, NULL,
				_PROP_TAG_TYPE_EITHER) == false)
		goto bad;

	/* Check to see if this is the end of the array. */
	if (_PROP_TAG_MATCH(ctx, "array") &&
	    ctx->poic_tag_type == _PROP_TAG_TYPE_END) {
		/* It is, so don't iterate any further. */
		return (true);
	}

	if (_prop_stack_push(stack, array,
			     _prop_array_internalize_continue, NULL, NULL))
		return (false);

 bad:
	prop_object_release(array);
	*obj = NULL;
	return (true);
}

/*
 * npfctl_sessions_load: import a list of sessions, reconstruct them and load.
 */
int
npfctl_sessions_load(u_long cmd, void *data)
{
	const struct plistref *pref = data;
	npf_sehash_t *sehasht = NULL;
	prop_dictionary_t sesdict, sedict;
	prop_object_iterator_t it;
	prop_array_t selist;
	int error;

	/* Retrieve the dictionary containing session and NAT policy lists. */
	error = prop_dictionary_copyin_ioctl(pref, cmd, &sesdict);
	if (error)
		return error;

	/*
	 * Note: session objects contain the references to the NAT policy
	 * entries.  Therefore, no need to directly access it.
	 */
	selist = prop_dictionary_get(sesdict, "session-list");
	if (prop_object_type(selist) != PROP_TYPE_ARRAY) {
		error = EINVAL;
		goto fail;
	}

	/* Create a session hash table. */
	sehasht = sess_htable_create();
	if (sehasht == NULL) {
		error = ENOMEM;
		goto fail;
	}

	/*
	 * Iterate through and construct each session.
	 */
	error = 0;
	it = prop_array_iterator(selist);
	npf_core_enter();
	while ((sedict = prop_object_iterator_next(it)) != NULL) {
		/* Session - dictionary. */
		if (prop_object_type(sedict) != PROP_TYPE_DICTIONARY) {
			error = EINVAL;
			goto fail;
		}
		/* Construct and insert real session structure. */
		error = npf_session_restore(sehasht, sedict);
		if (error) {
			goto fail;
		}
	}
	npf_core_exit();
	sess_htable_reload(sehasht);
fail:
	prop_object_release(selist);
	if (error && sehasht) {
		/* Destroy session table. */
		sess_htable_destroy(sehasht);
	}
	return error;
}

/*
 * prop_string_copy --
 *	Copy a string.  If the original string is immutable, then the
 *	copy is also immutable and references the same external data.
 */
prop_string_t
prop_string_copy(prop_string_t ops)
{
	prop_string_t ps;

	if (! prop_object_is_string(ops))
		return (NULL);

	ps = _prop_string_alloc();
	if (ps != NULL) {
		ps->ps_size = ops->ps_size;
		ps->ps_flags = ops->ps_flags;
		if (ops->ps_flags & PS_F_NOCOPY)
			ps->ps_immutable = ops->ps_immutable;
		else {
			char *cp = _PROP_MALLOC(ps->ps_size + 1, M_PROP_STRING);
			if (cp == NULL) {
				prop_object_release(ps);
				return (NULL);
			}
			strcpy(cp, prop_string_contents(ops));
			ps->ps_mutable = cp;
		}
	}
	return (ps);
}

/*
 * prop_array_remove --
 *	Remove the reference to an object from an array at the specified
 *	index.	The array will be compacted following the removal.
 */
void
prop_array_remove(prop_array_t pa, unsigned int idx)
{
	prop_object_t po;

	if (! prop_object_is_array(pa))
		return;

	_PROP_RWLOCK_WRLOCK(pa->pa_rwlock);

	_PROP_ASSERT(idx < pa->pa_count);

	/* XXX Should this be a _PROP_ASSERT()? */
	if (prop_array_is_immutable(pa)) {
		_PROP_RWLOCK_UNLOCK(pa->pa_rwlock);
		return;
	}

	po = pa->pa_array[idx];
	_PROP_ASSERT(po != NULL);

	for (++idx; idx < pa->pa_count; idx++)
		pa->pa_array[idx - 1] = pa->pa_array[idx];
	pa->pa_count--;
	pa->pa_version++;

	_PROP_RWLOCK_UNLOCK(pa->pa_rwlock);

	prop_object_release(po);
}

prop_dictionary_t
prop_dictionary_augment(prop_dictionary_t bottom, prop_dictionary_t top)
{
	prop_object_iterator_t i;
	prop_dictionary_t d;
	prop_object_t ko, o;
	prop_dictionary_keysym_t k;
	const char *key;

	d = prop_dictionary_copy_mutable(bottom);

	i = prop_dictionary_iterator(top);

	while ((ko = prop_object_iterator_next(i)) != NULL) {
		k = (prop_dictionary_keysym_t)ko;
		key = prop_dictionary_keysym_cstring_nocopy(k);
		o = prop_dictionary_get_keysym(top, k);
		if (o == NULL || !prop_dictionary_set(d, key, o)) {
			prop_object_release((prop_object_t)d);
			d = NULL;
			break;
		}
	}
	prop_object_iterator_release(i);
	prop_dictionary_make_immutable(d);
	return d;
}

int
main(int argc, char **argv)
{
	modctl_load_t cmdargs;
	prop_dictionary_t props;
	char *propsstr;
	int ch;
	int flags;

	flags = 0;
	props = prop_dictionary_create();

	while ((ch = getopt(argc, argv, "b:fi:s:")) != -1) {
		switch (ch) {
		case 'b':
			parse_param(props, optarg, parse_bool_param);
			break;

		case 'f':
			flags |= MODCTL_LOAD_FORCE;
			break;

		case 'i':
			parse_param(props, optarg, parse_int_param);
			break;

		case 's':
			parse_param(props, optarg, parse_string_param);
			break;

		default:
			usage();
			/* NOTREACHED */
		}
	}

	argc -= optind;
	argv += optind;
	if (argc != 1)
		usage();

	propsstr = prop_dictionary_externalize(props);
	if (propsstr == NULL)
		errx(EXIT_FAILURE, "Failed to process properties");

	cmdargs.ml_filename = argv[0];
	cmdargs.ml_flags = flags;
	cmdargs.ml_props = propsstr;
	cmdargs.ml_propslen = strlen(propsstr);

	if (modctl(MODCTL_LOAD, &cmdargs)) {
		err(EXIT_FAILURE, NULL);
	}

	free(propsstr);
	prop_object_release(props);

	exit(EXIT_SUCCESS);
}

/*
 * Get list of physical devices for active table.
 * Get dev_t from pdev vnode and insert it into cmd_array.
 *
 * XXX. This function is called from lvm2tools to get information
 *      about physical devices, too e.g. during vgcreate.
 */
int
dm_table_deps_ioctl(prop_dictionary_t dm_dict)
{
	dm_dev_t *dmv;
	dm_table_t *tbl;
	dm_table_entry_t *table_en;

	prop_array_t cmd_array;
	const char *name, *uuid;
	uint32_t flags, minor;

	int table_type;

	name = NULL;
	uuid = NULL;
	dmv = NULL;
	flags = 0;

	prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_NAME, &name);
	prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_UUID, &uuid);
	prop_dictionary_get_uint32(dm_dict, DM_IOCTL_FLAGS, &flags);
	prop_dictionary_get_uint32(dm_dict, DM_IOCTL_MINOR, &minor);

	/* create array for dev_t's */
	cmd_array = prop_array_create();

	if ((dmv = dm_dev_lookup(name, uuid, minor)) == NULL) {
		DM_REMOVE_FLAG(flags, DM_EXISTS_FLAG);
		return ENOENT;
	}
	prop_dictionary_set_uint32(dm_dict, DM_IOCTL_MINOR, dmv->minor);
	prop_dictionary_set_cstring(dm_dict, DM_IOCTL_NAME, dmv->name);
	prop_dictionary_set_cstring(dm_dict, DM_IOCTL_UUID, dmv->uuid);

	aprint_debug("Getting table deps for device: %s\n", dmv->name);

	/*
	 * if DM_QUERY_INACTIVE_TABLE_FLAG is passed we need to query
	 * INACTIVE TABLE
	 */
	if (flags & DM_QUERY_INACTIVE_TABLE_FLAG)
		table_type = DM_TABLE_INACTIVE;
	else
		table_type = DM_TABLE_ACTIVE;

	tbl = dm_table_get_entry(&dmv->table_head, table_type);

	SLIST_FOREACH(table_en, tbl, next)
	    table_en->target->deps(table_en, cmd_array);

	dm_table_release(&dmv->table_head, table_type);
	dm_dev_unbusy(dmv);

	prop_dictionary_set(dm_dict, DM_IOCTL_CMD_DATA, cmd_array);
	prop_object_release(cmd_array);

	return 0;
}

static int
hdaudioctl_set(int fd, int argc, char *argv[])
{
	prop_dictionary_t request, response;
	prop_array_t config = NULL;
	uint16_t nid, codecid;
	int error;

	if (argc < 2 || argc > 3)
		usage();

	codecid = strtol(argv[0], NULL, 0);
	nid = strtol(argv[1], NULL, 0);
	if (argc == 3) {
		config = prop_array_internalize_from_file(argv[2]);
		if (config == NULL) {
			fprintf(stderr,
			    "couldn't load configuration from %s\n", argv[2]);
			return EIO;
		}
	}

	request = prop_dictionary_create();
	if (request == NULL) {
		fprintf(stderr, "out of memory\n");
		return ENOMEM;
	}

	prop_dictionary_set_uint16(request, "codecid", codecid);
	prop_dictionary_set_uint16(request, "nid", nid);
	if (config)
		prop_dictionary_set(request, "pin-config", config);

	error = prop_dictionary_sendrecv_ioctl(request, fd,
	    HDAUDIO_FGRP_SETCONFIG, &response);
	if (error != 0) {
		perror("HDAUDIO_FGRP_SETCONFIG failed");
		return error;
	}

	prop_object_release(response);
	prop_object_release(request);

	return 0;
}