2017-11-18 17:09:20 +01:00
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/* SPDX-License-Identifier: LGPL-2.1+ */
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2015-04-01 13:50:31 +02:00
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#ifndef foosddevicehfoo
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#define foosddevicehfoo
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/***
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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2015-10-24 23:42:56 +02:00
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#include <inttypes.h>
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2016-03-14 22:44:49 +01:00
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#include <sys/sysmacros.h>
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2015-11-18 22:46:33 +01:00
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#include <sys/types.h>
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2015-04-01 13:50:31 +02:00
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#include "_sd-common.h"
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_SD_BEGIN_DECLARATIONS;
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typedef struct sd_device sd_device;
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2015-04-14 16:22:39 +02:00
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typedef struct sd_device_enumerator sd_device_enumerator;
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/* device */
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2015-04-01 13:50:31 +02:00
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sd_device *sd_device_ref(sd_device *device);
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sd_device *sd_device_unref(sd_device *device);
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int sd_device_new_from_syspath(sd_device **ret, const char *syspath);
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int sd_device_new_from_devnum(sd_device **ret, char type, dev_t devnum);
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int sd_device_new_from_subsystem_sysname(sd_device **ret, const char *subsystem, const char *sysname);
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int sd_device_new_from_device_id(sd_device **ret, const char *id);
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int sd_device_get_parent(sd_device *child, sd_device **ret);
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int sd_device_get_parent_with_subsystem_devtype(sd_device *child, const char *subsystem, const char *devtype, sd_device **ret);
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int sd_device_get_syspath(sd_device *device, const char **ret);
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int sd_device_get_subsystem(sd_device *device, const char **ret);
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int sd_device_get_devtype(sd_device *device, const char **ret);
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int sd_device_get_devnum(sd_device *device, dev_t *devnum);
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int sd_device_get_ifindex(sd_device *device, int *ifindex);
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int sd_device_get_driver(sd_device *device, const char **ret);
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int sd_device_get_devpath(sd_device *device, const char **ret);
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int sd_device_get_devname(sd_device *device, const char **ret);
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int sd_device_get_sysname(sd_device *device, const char **ret);
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int sd_device_get_sysnum(sd_device *device, const char **ret);
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int sd_device_get_is_initialized(sd_device *device, int *initialized);
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int sd_device_get_usec_since_initialized(sd_device *device, uint64_t *usec);
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const char *sd_device_get_tag_first(sd_device *device);
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const char *sd_device_get_tag_next(sd_device *device);
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const char *sd_device_get_devlink_first(sd_device *device);
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const char *sd_device_get_devlink_next(sd_device *device);
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const char *sd_device_get_property_first(sd_device *device, const char **value);
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const char *sd_device_get_property_next(sd_device *device, const char **value);
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const char *sd_device_get_sysattr_first(sd_device *device);
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const char *sd_device_get_sysattr_next(sd_device *device);
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int sd_device_has_tag(sd_device *device, const char *tag);
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int sd_device_get_property_value(sd_device *device, const char *key, const char **value);
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int sd_device_get_sysattr_value(sd_device *device, const char *sysattr, const char **_value);
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2018-09-11 05:42:18 +02:00
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int sd_device_set_sysattr_value(sd_device *device, const char *sysattr, const char *value);
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2015-04-01 13:50:31 +02:00
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2015-04-14 16:22:39 +02:00
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/* device enumerator */
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int sd_device_enumerator_new(sd_device_enumerator **ret);
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sd_device_enumerator *sd_device_enumerator_ref(sd_device_enumerator *enumerator);
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sd_device_enumerator *sd_device_enumerator_unref(sd_device_enumerator *enumerator);
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sd_device *sd_device_enumerator_get_device_first(sd_device_enumerator *enumerator);
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sd_device *sd_device_enumerator_get_device_next(sd_device_enumerator *enumerator);
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sd_device *sd_device_enumerator_get_subsystem_first(sd_device_enumerator *enumerator);
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sd_device *sd_device_enumerator_get_subsystem_next(sd_device_enumerator *enumerator);
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int sd_device_enumerator_add_match_subsystem(sd_device_enumerator *enumerator, const char *subsystem, int match);
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int sd_device_enumerator_add_match_sysattr(sd_device_enumerator *enumerator, const char *sysattr, const char *value, int match);
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int sd_device_enumerator_add_match_property(sd_device_enumerator *enumerator, const char *property, const char *value);
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int sd_device_enumerator_add_match_sysname(sd_device_enumerator *enumerator, const char *sysname);
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int sd_device_enumerator_add_match_tag(sd_device_enumerator *enumerator, const char *tag);
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int sd_device_enumerator_add_match_parent(sd_device_enumerator *enumerator, sd_device *parent);
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2015-04-17 14:11:00 +02:00
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int sd_device_enumerator_allow_uninitialized(sd_device_enumerator *enumerator);
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2015-04-14 16:22:39 +02:00
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tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
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_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_device, sd_device_unref);
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_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_device_enumerator, sd_device_enumerator_unref);
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2015-04-01 13:50:31 +02:00
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_SD_END_DECLARATIONS;
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#endif
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