mirror of
https://github.com/NickHu/sway
synced 2024-12-29 22:23:46 +01:00
107 lines
2.6 KiB
C
107 lines
2.6 KiB
C
#define _POSIX_C_SOURCE 200809L
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <sys/wait.h>
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
#include "sway/commands.h"
|
|
#include "sway/config.h"
|
|
#include "sway/tree/container.h"
|
|
#include "sway/tree/root.h"
|
|
#include "sway/tree/workspace.h"
|
|
#include "log.h"
|
|
#include "stringop.h"
|
|
|
|
struct cmd_results *cmd_exec_validate(int argc, char **argv) {
|
|
struct cmd_results *error = NULL;
|
|
if ((error = checkarg(argc, argv[-1], EXPECTED_AT_LEAST, 1))) {
|
|
return error;
|
|
}
|
|
if (!config->active || config->validating) {
|
|
return cmd_results_new(CMD_DEFER, NULL);
|
|
}
|
|
return error;
|
|
}
|
|
|
|
struct cmd_results *cmd_exec_process(int argc, char **argv) {
|
|
struct cmd_results *error = NULL;
|
|
char *tmp = NULL;
|
|
if (strcmp(argv[0], "--no-startup-id") == 0) {
|
|
sway_log(SWAY_INFO, "exec switch '--no-startup-id' not supported, ignored.");
|
|
--argc; ++argv;
|
|
if ((error = checkarg(argc, argv[-1], EXPECTED_AT_LEAST, 1))) {
|
|
return error;
|
|
}
|
|
}
|
|
|
|
if (argc == 1 && (argv[0][0] == '\'' || argv[0][0] == '"')) {
|
|
tmp = strdup(argv[0]);
|
|
strip_quotes(tmp);
|
|
} else {
|
|
tmp = join_args(argv, argc);
|
|
}
|
|
|
|
// Put argument into cmd array
|
|
char cmd[4096];
|
|
strncpy(cmd, tmp, sizeof(cmd) - 1);
|
|
cmd[sizeof(cmd) - 1] = 0;
|
|
free(tmp);
|
|
sway_log(SWAY_DEBUG, "Executing %s", cmd);
|
|
|
|
int fd[2];
|
|
if (pipe(fd) != 0) {
|
|
sway_log(SWAY_ERROR, "Unable to create pipe for fork");
|
|
}
|
|
|
|
pid_t pid, child;
|
|
// Fork process
|
|
if ((pid = fork()) == 0) {
|
|
// Fork child process again
|
|
setsid();
|
|
sigset_t set;
|
|
sigemptyset(&set);
|
|
sigprocmask(SIG_SETMASK, &set, NULL);
|
|
close(fd[0]);
|
|
if ((child = fork()) == 0) {
|
|
close(fd[1]);
|
|
execlp("sh", "sh", "-c", cmd, (void *)NULL);
|
|
sway_log_errno(SWAY_ERROR, "execlp failed");
|
|
_exit(1);
|
|
}
|
|
ssize_t s = 0;
|
|
while ((size_t)s < sizeof(pid_t)) {
|
|
s += write(fd[1], ((uint8_t *)&child) + s, sizeof(pid_t) - s);
|
|
}
|
|
close(fd[1]);
|
|
_exit(0); // Close child process
|
|
} else if (pid < 0) {
|
|
close(fd[0]);
|
|
close(fd[1]);
|
|
return cmd_results_new(CMD_FAILURE, "fork() failed");
|
|
}
|
|
close(fd[1]); // close write
|
|
ssize_t s = 0;
|
|
while ((size_t)s < sizeof(pid_t)) {
|
|
s += read(fd[0], ((uint8_t *)&child) + s, sizeof(pid_t) - s);
|
|
}
|
|
close(fd[0]);
|
|
// cleanup child process
|
|
waitpid(pid, NULL, 0);
|
|
if (child > 0) {
|
|
sway_log(SWAY_DEBUG, "Child process created with pid %d", child);
|
|
root_record_workspace_pid(child);
|
|
} else {
|
|
return cmd_results_new(CMD_FAILURE, "Second fork() failed");
|
|
}
|
|
|
|
return cmd_results_new(CMD_SUCCESS, NULL);
|
|
}
|
|
|
|
struct cmd_results *cmd_exec_always(int argc, char **argv) {
|
|
struct cmd_results *error;
|
|
if ((error = cmd_exec_validate(argc, argv))) {
|
|
return error;
|
|
}
|
|
return cmd_exec_process(argc, argv);
|
|
}
|