85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
|
/*
|
||
|
|
* spawn.c - Lua configuration management
|
||
|
|
*
|
||
|
|
* Copyright © 2009 Julien Danjou <julien@danjou.info>
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License along
|
||
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <errno.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <sys/wait.h>
|
||
|
|
|
||
|
|
#include "structs.h"
|
||
|
|
#include "spawn.h"
|
||
|
|
#include "luaa.h"
|
||
|
|
|
||
|
|
extern awesome_t globalconf;
|
||
|
|
|
||
|
|
/** Spawn a program.
|
||
|
|
* This function is multi-head (Zaphod) aware and will set display to
|
||
|
|
* the right screen according to mouse position.
|
||
|
|
* \param L The Lua VM state.
|
||
|
|
* \return The number of elements pushed on stack
|
||
|
|
* \luastack
|
||
|
|
* \lparam The command to launch.
|
||
|
|
* \lparam The optional screen number to spawn the command on.
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
luaA_spawn(lua_State *L)
|
||
|
|
{
|
||
|
|
char *host, newdisplay[128];
|
||
|
|
const char *cmd;
|
||
|
|
int screen = 0, screenp, displayp;
|
||
|
|
|
||
|
|
if(lua_gettop(L) == 2)
|
||
|
|
{
|
||
|
|
screen = luaL_checknumber(L, 2) - 1;
|
||
|
|
luaA_checkscreen(screen);
|
||
|
|
}
|
||
|
|
|
||
|
|
cmd = luaL_checkstring(L, 1);
|
||
|
|
|
||
|
|
if(!globalconf.xinerama_is_active)
|
||
|
|
{
|
||
|
|
xcb_parse_display(NULL, &host, &displayp, &screenp);
|
||
|
|
snprintf(newdisplay, sizeof(newdisplay), "%s:%d.%d", host, displayp, screen);
|
||
|
|
setenv("DISPLAY", newdisplay, 1);
|
||
|
|
p_delete(&host);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* The double-fork construct avoids zombie processes and keeps the code
|
||
|
|
* clean from stupid signal handlers. */
|
||
|
|
if(fork() == 0)
|
||
|
|
{
|
||
|
|
if(fork() == 0)
|
||
|
|
{
|
||
|
|
if(globalconf.connection)
|
||
|
|
xcb_disconnect(globalconf.connection);
|
||
|
|
setsid();
|
||
|
|
a_exec(cmd);
|
||
|
|
warn("execl '%s' failed: %s\n", cmd, strerror(errno));
|
||
|
|
}
|
||
|
|
exit(EXIT_SUCCESS);
|
||
|
|
}
|
||
|
|
wait(0);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
|