3
0
mirror of https://git.kernel.org/pub/scm/network/wireless/iwd.git synced 2024-12-23 06:02:37 +01:00
iwd/client/command.h
Fangrui Song fa1c12453b build: treewide: Set retain attribute
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.
2021-11-11 14:27:33 -06:00

97 lines
3.0 KiB
C

/*
*
* Wireless daemon for Linux
*
* Copyright (C) 2017-2019 Intel Corporation. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#define COMMAND_OPTION_USERNAME "username"
#define COMMAND_OPTION_PASSWORD "password"
#define COMMAND_OPTION_PASSPHRASE "passphrase"
#define COMMAND_OPTION_DONTASK "dont-ask"
typedef char *(*command_completion_func_t) (const char *text, int state);
enum cmd_status {
CMD_STATUS_TRIGGERED,
CMD_STATUS_DONE,
CMD_STATUS_INVALID_ARGS,
CMD_STATUS_INVALID_VALUE,
CMD_STATUS_UNSUPPORTED,
CMD_STATUS_FAILED,
};
struct command {
const char *entity;
const char *cmd;
const char *arg;
enum cmd_status (*function)(const char *entity,
char **argv, int argc);
const char *desc;
const bool refreshable;
command_completion_func_t completion;
};
struct command_family {
const char *caption;
const char *name;
const struct command *command_list;
command_completion_func_t family_arg_completion;
command_completion_func_t entity_arg_completion;
void (*set_default_entity)(const char *entity);
void (*reset_default_entity)(void);
};
bool command_option_get(const char *name, const char **value_out);
bool command_needs_no_agent(void);
bool command_line_find_token(const char *token, uint8_t num_to_inspect);
char **command_completion(const char *text, int start, int end);
char *command_entity_arg_completion(const char *text, int state,
const struct command *command_list);
void command_process_prompt(char **argv, int argc);
void command_noninteractive_trigger(void);
bool command_is_interactive_mode(void);
int command_get_exit_status(void);
void command_set_exit_status(int status);
void command_reset_default_entities(void);
void command_family_register(const struct command_family *family);
void command_family_unregister(const struct command_family *family);
struct command_family_desc {
const char *name;
int (*init)(void);
void (*exit)(void);
} __attribute__((aligned(8)));
#define COMMAND_FAMILY(name, init, exit) \
_Pragma("GCC diagnostic push") \
_Pragma("GCC diagnostic ignored \"-Wattributes\"") \
static struct command_family_desc __command_family_ ## name \
__attribute__((used, retain, \
section("__command"), aligned(8))) = { \
#name, init, exit \
}; \
_Pragma("GCC diagnostic pop")
bool command_init(char **argv, int argc);
void command_exit(void);