62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/*
|
||
* vim:ts=8:expandtab
|
||
*
|
||
* i3 - an improved dynamic tiling window manager
|
||
*
|
||
* (c) 2009 Michael Stapelberg and contributors
|
||
*
|
||
* See file LICENSE for license information.
|
||
*
|
||
*/
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
#include <unistd.h>
|
||
#include <string.h>
|
||
#include <sys/wait.h>
|
||
|
||
#include "i3.h"
|
||
|
||
/*
|
||
* Starts the given application by passing it through a shell. We use double fork
|
||
* to avoid zombie processes. As the started application’s parent exits (immediately),
|
||
* the application is reparented to init (process-id 1), which correctly handles
|
||
* childs, so we don’t have to do it :-).
|
||
*
|
||
* The shell is determined by looking for the SHELL environment variable. If it
|
||
* does not exist, /bin/sh is used.
|
||
*
|
||
*/
|
||
void start_application(const char *command) {
|
||
if (fork() == 0) {
|
||
/* Child process */
|
||
if (fork() == 0) {
|
||
/* Stores the path of the shell */
|
||
static const char *shell = NULL;
|
||
|
||
if (shell == NULL)
|
||
if ((shell = getenv("SHELL")) == NULL)
|
||
shell = "/bin/sh";
|
||
|
||
/* This is the child */
|
||
execl(shell, shell, "-c", command, NULL);
|
||
/* not reached */
|
||
}
|
||
exit(0);
|
||
}
|
||
wait(0);
|
||
}
|
||
|
||
/*
|
||
* Checks a generic cookie for errors and quits with the given message if there
|
||
* was an error.
|
||
*
|
||
*/
|
||
void check_error(xcb_connection_t *connection, xcb_void_cookie_t cookie, char *err_message) {
|
||
xcb_generic_error_t *error = xcb_request_check(connection, cookie);
|
||
if (error != NULL) {
|
||
fprintf(stderr, "ERROR: %s : %d\n", err_message , error->error_code);
|
||
xcb_disconnect(connection);
|
||
exit(-1);
|
||
}
|
||
}
|