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https://git.kernel.org/pub/scm/network/wireless/iwd.git
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fa1c12453b
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.
97 lines
3.0 KiB
C
97 lines
3.0 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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#define COMMAND_OPTION_USERNAME "username"
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#define COMMAND_OPTION_PASSWORD "password"
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#define COMMAND_OPTION_PASSPHRASE "passphrase"
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#define COMMAND_OPTION_DONTASK "dont-ask"
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typedef char *(*command_completion_func_t) (const char *text, int state);
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enum cmd_status {
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CMD_STATUS_TRIGGERED,
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CMD_STATUS_DONE,
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CMD_STATUS_INVALID_ARGS,
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CMD_STATUS_INVALID_VALUE,
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CMD_STATUS_UNSUPPORTED,
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CMD_STATUS_FAILED,
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};
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struct command {
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const char *entity;
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const char *cmd;
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const char *arg;
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enum cmd_status (*function)(const char *entity,
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char **argv, int argc);
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const char *desc;
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const bool refreshable;
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command_completion_func_t completion;
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};
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struct command_family {
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const char *caption;
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const char *name;
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const struct command *command_list;
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command_completion_func_t family_arg_completion;
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command_completion_func_t entity_arg_completion;
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void (*set_default_entity)(const char *entity);
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void (*reset_default_entity)(void);
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};
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bool command_option_get(const char *name, const char **value_out);
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bool command_needs_no_agent(void);
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bool command_line_find_token(const char *token, uint8_t num_to_inspect);
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char **command_completion(const char *text, int start, int end);
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char *command_entity_arg_completion(const char *text, int state,
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const struct command *command_list);
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void command_process_prompt(char **argv, int argc);
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void command_noninteractive_trigger(void);
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bool command_is_interactive_mode(void);
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int command_get_exit_status(void);
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void command_set_exit_status(int status);
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void command_reset_default_entities(void);
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void command_family_register(const struct command_family *family);
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void command_family_unregister(const struct command_family *family);
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struct command_family_desc {
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const char *name;
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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 COMMAND_FAMILY(name, 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 command_family_desc __command_family_ ## name \
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__attribute__((used, retain, \
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section("__command"), aligned(8))) = { \
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#name, init, exit \
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}; \
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_Pragma("GCC diagnostic pop")
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bool command_init(char **argv, int argc);
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void command_exit(void);
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