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https://git.kernel.org/pub/scm/network/wireless/iwd.git
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LLD 13 and GNU ld 2.37 support -z start-stop-gc which allows garbage collection of C identifier name sections despite the __start_/__stop_ references. GNU ld before 2015-10 had the behavior as well. Simply set the retain attribute so that GCC 11 (if configure-time binutils is 2.36 or newer)/Clang 13 will set the SHF_GNU_RETAIN section attribute to prevent garbage collection. Without the patch, there are linker errors with -z start-stop-gc (LLD default) when -Wl,--gc-sections is used: ``` ld.lld: error: undefined symbol: __start___eap >>> referenced by eap.c >>> src/eap.o:(eap_init) ``` The remain attribute will not be needed if the metadata sections are referenced by code directly.
132 lines
4.7 KiB
C
132 lines
4.7 KiB
C
/*
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*
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* Wireless daemon for Linux
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*
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* Copyright (C) 2017-2019 Intel Corporation. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but 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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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <stdio.h>
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struct proxy_interface;
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#define IWD_ADAPTER_INTERFACE "net.connman.iwd.Adapter"
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#define IWD_ACCESS_POINT_INTERFACE "net.connman.iwd.AccessPoint"
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#define IWD_AD_HOC_INTERFACE "net.connman.iwd.AdHoc"
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#define IWD_AGENT_MANAGER_INTERFACE "net.connman.iwd.AgentManager"
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#define IWD_DEVICE_INTERFACE "net.connman.iwd.Device"
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#define IWD_KNOWN_NETWORK_INTREFACE "net.connman.iwd.KnownNetwork"
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#define IWD_NETWORK_INTERFACE "net.connman.iwd.Network"
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#define IWD_WSC_INTERFACE "net.connman.iwd.SimpleConfiguration"
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#define IWD_STATION_INTERFACE "net.connman.iwd.Station"
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#define IWD_STATION_DIAGNOSTIC_INTERFACE "net.connman.iwd.StationDiagnostic"
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#define IWD_AP_DIAGNOSTIC_INTERFACE "net.connman.iwd.AccessPointDiagnostic"
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#define IWD_DAEMON_INTERFACE "net.connman.iwd.Daemon"
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typedef bool (*proxy_property_match_func_t) (const void *a, const void *b);
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struct proxy_interface_property {
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const char *name;
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const char *type;
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void (*update)(void *data, struct l_dbus_message_iter *variant);
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const char *(*tostr)(const void *data);
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const bool is_read_write;
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bool (*append)(struct l_dbus_message_builder *builder,
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const char *value_str);
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const char **options;
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};
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struct proxy_interface_type_ops {
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void *(*create)(void);
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void (*destroy)(void *data);
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const char *(*identity)(void *data);
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void (*display)(const char *margin, const void *data);
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};
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struct proxy_interface_type {
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const char *interface;
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const struct proxy_interface_property *properties;
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const struct proxy_interface_type_ops *ops;
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};
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char *proxy_property_completion(
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const struct proxy_interface_property *properties,
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const char *text, int state);
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bool proxy_property_set(const struct proxy_interface *proxy, const char *name,
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const char *value_str, l_dbus_message_func_t callback);
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struct proxy_interface *proxy_interface_find(const char *interface,
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const char *path);
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struct l_queue *proxy_interface_find_all(const char *interface,
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proxy_property_match_func_t function,
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const void *value);
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bool proxy_interface_is_same(const struct proxy_interface *a,
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const struct proxy_interface *b);
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bool dbus_message_has_error(struct l_dbus_message *message);
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bool proxy_interface_method_call(const struct proxy_interface *proxy,
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const char *name, const char *signature,
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l_dbus_message_func_t callback, ...);
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void proxy_properties_display(const struct proxy_interface *proxy,
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const char *caption, const char *margin,
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int name_column_width, int value_column_width);
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char *proxy_property_str_completion(const struct proxy_interface_type *type,
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proxy_property_match_func_t function,
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const char *property_name,
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const void *value, int state,
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const char *extra_interface);
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void *proxy_interface_get_data(const struct proxy_interface *proxy);
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const char *proxy_interface_get_interface(const struct proxy_interface *proxy);
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const char *proxy_interface_get_path(const struct proxy_interface *proxy);
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const char *proxy_interface_get_identity_str(
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const struct proxy_interface *proxy);
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void proxy_interface_display_list(const char *interface);
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void proxy_interface_type_register(
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const struct proxy_interface_type *interface_type);
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void proxy_interface_type_unregister(
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const struct proxy_interface_type *interface_type);
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struct l_dbus *dbus_get_bus(void);
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struct interface_type_desc {
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const char *interface;
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int (*init)(void);
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void (*exit)(void);
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} __attribute__((aligned(8)));
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#define INTERFACE_TYPE(interface, init, exit) \
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_Pragma("GCC diagnostic push") \
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_Pragma("GCC diagnostic ignored \"-Wattributes\"") \
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static struct interface_type_desc __interface_type_ ## interface\
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__attribute__((used, retain, section("__interface"), \
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aligned(8))) = { \
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#interface, init, exit \
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}; \
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_Pragma("GCC diagnostic pop")
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bool dbus_proxy_init(void);
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bool dbus_proxy_exit(void);
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