marcel/gamemode
1
0
Fork 0
mirror of https://github.com/FeralInteractive/gamemode.git synced 2025-08-06 13:18:31 +02:00
Code Issues Packages Projects Releases Wiki Activity

Add run_external_process_get_output function to get output as well

Browse Source
This commit is contained in:
Marc Di Luzio
2019-02-09 20:11:07 +00:00
parent 392fb221dc
commit e31a811946
3 changed files with 82 additions and 53 deletions
Download Patch File Download Diff File Expand all files Collapse all files

76
daemon/external-helper.c
View File

@@ -31,6 +31,7 @@ POSSIBILITY OF SUCH DAMAGE.
#define _GNU_SOURCE
#include "external-helper.h"
#include "logging.h"
#include <linux/limits.h>
@@ -45,8 +46,6 @@ int run_external_process(const char *const *exec_args)
{
pid_t p;
int status = 0;
int ret = 0;
int r = -1;
if ((p = fork()) < 0) {
LOG_ERROR("Failed to fork(): %s\n", strerror(errno));
@@ -59,23 +58,74 @@ int run_external_process(const char *const *exec_args)
* bindings that these objects are completely constant.
* http://pubs.opengroup.org/onlinepubs/9699919799/functions/exec.html
*/
if ((r = execv(exec_args[0], (char *const *)exec_args)) != 0) {
if (execv(exec_args[0], (char *const *)exec_args) != 0) {
LOG_ERROR("Failed to execute external process: %s %s\n", exec_args[0], strerror(errno));
exit(EXIT_FAILURE);
}
_exit(EXIT_SUCCESS);
} else {
if (waitpid(p, &status, 0) < 0) {
LOG_ERROR("Failed to waitpid(%d): %s\n", (int)p, strerror(errno));
return -1;
}
/* i.e. sigsev */
if (!WIFEXITED(status)) {
LOG_ERROR("Child process '%s' exited abnormally\n", exec_args[0]);
}
}
if ((ret = WEXITSTATUS(status)) != 0) {
if (waitpid(p, &status, 0) < 0) {
LOG_ERROR("Failed to waitpid(%d): %s\n", (int)p, strerror(errno));
return -1;
}
/* i.e. sigsev */
if (!WIFEXITED(status)) {
LOG_ERROR("Child process '%s' exited abnormally\n", exec_args[0]);
} else if (WEXITSTATUS(status) != 0) {
LOG_ERROR("External process failed\n");
return -1;
}
return 0;
}
/**
* Call an external process and get output
*/
int run_external_process_get_output(const char *const *exec_args, char buffer[EXTERNAL_BUFFER_MAX])
{
pid_t p;
int status = 0;
int pipes[2];
if (pipe(pipes) == -1) {
LOG_ERROR("Could not create pipe: %s!\n", strerror(errno));
return -1;
}
if ((p = fork()) < 0) {
LOG_ERROR("Failed to fork(): %s\n", strerror(errno));
return false;
} else if (p == 0) {
/* Send STDOUT to the pipe */
dup2(pipes[1], STDOUT_FILENO);
close(pipes[0]);
close(pipes[1]);
/* Launch the process */
if (execv(exec_args[0], (char *const *)exec_args) != 0) {
LOG_ERROR("Failed to execute external process %s: %s\n", exec_args[0], strerror(errno));
exit(EXIT_FAILURE);
}
_exit(EXIT_SUCCESS);
}
close(pipes[1]);
if (read(pipes[0], buffer, EXTERNAL_BUFFER_MAX) < 0) {
LOG_ERROR("Failed to read from process %s: %s\n", exec_args[0], strerror(errno));
return -1;
}
if (waitpid(p, &status, 0) < 0) {
LOG_ERROR("Failed to waitpid(%d): %s\n", (int)p, strerror(errno));
return -1;
}
/* i.e. sigsev */
if (!WIFEXITED(status)) {
LOG_ERROR("Child process '%s' exited abnormally\n", exec_args[0]);
} else if (WEXITSTATUS(status) != 0) {
LOG_ERROR("External process failed\n");
return -1;
}