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99 lines
2.4 KiB
99 lines
2.4 KiB
#define _XOPEN_SOURCE 500
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <signal.h>
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#include "sway/commands.h"
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#include "sway/config.h"
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#include "sway/tree/container.h"
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#include "sway/tree/root.h"
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#include "sway/tree/workspace.h"
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#include "log.h"
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#include "stringop.h"
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struct cmd_results *cmd_exec_always(int argc, char **argv) {
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struct cmd_results *error = NULL;
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if (!config->active) return cmd_results_new(CMD_DEFER, NULL, NULL);
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if ((error = checkarg(argc, "exec_always", EXPECTED_MORE_THAN, 0))) {
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return error;
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}
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char *tmp = NULL;
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if (strcmp((char*)*argv, "--no-startup-id") == 0) {
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wlr_log(WLR_INFO, "exec switch '--no-startup-id' not supported, ignored.");
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if ((error = checkarg(argc - 1, "exec_always", EXPECTED_MORE_THAN, 0))) {
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return error;
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}
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--argc; ++argv;
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}
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if (argv[0][0] == '\'' || argv[0][0] == '"') {
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if (argc > 0) {
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return cmd_results_new(CMD_INVALID, "exec_always",
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"command cannot be partially quoted");
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}
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tmp = strdup(argv[0]);
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strip_quotes(tmp);
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} else {
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tmp = join_args(argv, argc);
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}
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// Put argument into cmd array
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char cmd[4096];
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strncpy(cmd, tmp, sizeof(cmd) - 1);
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cmd[sizeof(cmd) - 1] = 0;
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free(tmp);
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wlr_log(WLR_DEBUG, "Executing %s", cmd);
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int fd[2];
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if (pipe(fd) != 0) {
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wlr_log(WLR_ERROR, "Unable to create pipe for fork");
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}
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pid_t pid, child;
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// Fork process
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if ((pid = fork()) == 0) {
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// Fork child process again
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setsid();
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sigset_t set;
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sigemptyset(&set);
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sigprocmask(SIG_SETMASK, &set, NULL);
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close(fd[0]);
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if ((child = fork()) == 0) {
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close(fd[1]);
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execl("/bin/sh", "/bin/sh", "-c", cmd, (void *)NULL);
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_exit(0);
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}
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ssize_t s = 0;
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while ((size_t)s < sizeof(pid_t)) {
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s += write(fd[1], ((uint8_t *)&child) + s, sizeof(pid_t) - s);
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}
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close(fd[1]);
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_exit(0); // Close child process
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} else if (pid < 0) {
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close(fd[0]);
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close(fd[1]);
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return cmd_results_new(CMD_FAILURE, "exec_always", "fork() failed");
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}
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close(fd[1]); // close write
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ssize_t s = 0;
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while ((size_t)s < sizeof(pid_t)) {
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s += read(fd[0], ((uint8_t *)&child) + s, sizeof(pid_t) - s);
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}
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close(fd[0]);
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// cleanup child process
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waitpid(pid, NULL, 0);
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if (child > 0) {
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wlr_log(WLR_DEBUG, "Child process created with pid %d", child);
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root_record_workspace_pid(child);
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} else {
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return cmd_results_new(CMD_FAILURE, "exec_always",
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"Second fork() failed");
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}
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return cmd_results_new(CMD_SUCCESS, NULL, NULL);
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}
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