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-rw-r--r--sway/commands/exec_always.c27
1 files changed, 13 insertions, 14 deletions
diff --git a/sway/commands/exec_always.c b/sway/commands/exec_always.c
index 682d195e..1c99de97 100644
--- a/sway/commands/exec_always.c
+++ b/sway/commands/exec_always.c
@@ -42,43 +42,42 @@ struct cmd_results *cmd_exec_always(int argc, char **argv) {
wlr_log(L_ERROR, "Unable to create pipe for fork");
}
- pid_t pid;
- pid_t *child = malloc(sizeof(pid_t)); // malloc'd so that Linux can avoid copying the process space
- if (!child) {
- return cmd_results_new(CMD_FAILURE, "exec_always", "Unable to allocate child pid");
- }
+ pid_t pid, child;
// Fork process
if ((pid = fork()) == 0) {
// Fork child process again
setsid();
- if ((*child = fork()) == 0) {
+ close(fd[0]);
+ if ((child = fork()) == 0) {
+ close(fd[1]);
execl("/bin/sh", "/bin/sh", "-c", cmd, (void *)NULL);
- // Not reached
+ _exit(0);
}
- close(fd[0]);
ssize_t s = 0;
while ((size_t)s < sizeof(pid_t)) {
- s += write(fd[1], ((uint8_t *)child) + s, sizeof(pid_t) - s);
+ s += write(fd[1], ((uint8_t *)&child) + s, sizeof(pid_t) - s);
}
close(fd[1]);
_exit(0); // Close child process
} else if (pid < 0) {
- free(child);
+ close(fd[0]);
+ close(fd[1]);
return cmd_results_new(CMD_FAILURE, "exec_always", "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);
+ 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) {
- wlr_log(L_DEBUG, "Child process created with pid %d", *child);
+ if (child > 0) {
+ wlr_log(L_DEBUG, "Child process created with pid %d", child);
// TODO: add PID to active workspace
} else {
- free(child);
+ return cmd_results_new(CMD_FAILURE, "exec_always",
+ "Second fork() failed");
}
return cmd_results_new(CMD_SUCCESS, NULL, NULL);