2a684cad5f
Patch tested by compiling with `__attribute__ ((format (printf, 2, 3)))` applied to `cmd_results_new`. String usage constants have been converted from pointers to arrays when encountered. General handler format strings were sometimes modified to include the old input string, especially for unknown command errors.
95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
#define _POSIX_C_SOURCE 200809L
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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 || config->validating) {
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return cmd_results_new(CMD_DEFER, NULL);
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}
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if ((error = checkarg(argc, argv[-1], EXPECTED_AT_LEAST, 1))) {
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return error;
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}
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char *tmp = NULL;
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if (strcmp(argv[0], "--no-startup-id") == 0) {
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wlr_log(WLR_INFO, "exec switch '--no-startup-id' not supported, ignored.");
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--argc; ++argv;
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if ((error = checkarg(argc, argv[-1], EXPECTED_AT_LEAST, 1))) {
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return error;
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}
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}
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if (argc == 1 && (argv[0][0] == '\'' || argv[0][0] == '"')) {
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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, "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, "Second fork() failed");
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}
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return cmd_results_new(CMD_SUCCESS, NULL);
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}
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