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Add two new API calls to the client to request gamemode on behalf of another process

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gamemode_request_start_for and gamemode_request_end_for
This commit is contained in:
Marc Di Luzio
2019-02-08 16:52:03 +00:00
parent 1f49432e7a
commit ca858d6932
1 changed files with 59 additions and 0 deletions
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59
lib/gamemode_client.h
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@ -48,6 +48,16 @@ POSSIBILITY OF SUCH DAMAGE.
* 2 if gamemode is active and this client is registered
* -1 if the query failed
*
* int gamemode_request_start_for(pid_t pid) - Request gamemode starts for another process
* 0 if the request was sent successfully
* -1 if the request failed
* -2 if the request was rejected
*
* int gamemode_request_end_for(pid_t pid) - Request gamemode ends for another process
* 0 if the request was sent successfully
* -1 if the request failed
* -2 if the request was rejected
*
* const char* gamemode_error_string() - Get an error string
* returns a string describing any of the above errors
*/
@ -61,6 +71,8 @@ POSSIBILITY OF SUCH DAMAGE.
#include <errno.h>
#include <string.h>
#include <sys/types.h>
static char internal_gamemode_client_error_string[512] = { 0 };
/**
@ -74,12 +86,15 @@ static volatile int internal_libgamemode_loaded = 1;
/* Typedefs for the functions to load */
typedef int (*api_call_return_int)(void);
typedef const char *(*api_call_return_cstring)(void);
typedef int (*api_call_pid_return_int)(pid_t);
/* Storage for functors */
static api_call_return_int REAL_internal_gamemode_request_start = NULL;
static api_call_return_int REAL_internal_gamemode_request_end = NULL;
static api_call_return_int REAL_internal_gamemode_query_status = NULL;
static api_call_return_cstring REAL_internal_gamemode_error_string = NULL;
static api_call_pid_return_int REAL_internal_gamemode_request_start_for = NULL;
static api_call_pid_return_int REAL_internal_gamemode_request_end_for = NULL;
/**
* Internal helper to perform the symbol binding safely.
@ -145,6 +160,14 @@ __attribute__((always_inline)) static inline int internal_load_libgamemode(void)
(void **)&REAL_internal_gamemode_error_string,
sizeof(REAL_internal_gamemode_error_string),
true },
{ "real_gamemode_request_start_for",
(void **)&REAL_internal_gamemode_request_start_for,
sizeof(REAL_internal_gamemode_request_start_for),
false },
{ "real_gamemode_request_end_for",
(void **)&REAL_internal_gamemode_request_end_for,
sizeof(REAL_internal_gamemode_request_end_for),
false },
};
void *libgamemode = NULL;
@ -273,4 +296,40 @@ __attribute__((always_inline)) static inline int gamemode_query_status(void)
return REAL_internal_gamemode_query_status();
}
/* Redirect to the real libgamemode */
__attribute__((always_inline)) static inline int gamemode_request_start_for(pid_t pid)
{
/* Need to load gamemode */
if (internal_load_libgamemode() < 0) {
return -1;
}
if (REAL_internal_gamemode_request_start_for == NULL) {
snprintf(internal_gamemode_client_error_string,
sizeof(internal_gamemode_client_error_string),
"gamemode_request_start_for missing (older host?)");
return -1;
}
return REAL_internal_gamemode_request_start_for(pid);
}
/* Redirect to the real libgamemode */
__attribute__((always_inline)) static inline int gamemode_request_end_for(pid_t pid)
{
/* Need to load gamemode */
if (internal_load_libgamemode() < 0) {
return -1;
}
if (REAL_internal_gamemode_request_end_for == NULL) {
snprintf(internal_gamemode_client_error_string,
sizeof(internal_gamemode_client_error_string),
"gamemode_request_end_for missing (older host?)");
return -1;
}
return REAL_internal_gamemode_request_end_for(pid);
}
#endif // CLIENT_GAMEMODE_H