kopia lustrzana https://github.com/FreeSpacenav/spnavcfg
57 wiersze
1.3 KiB
C
57 wiersze
1.3 KiB
C
/*
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spnavcfg - an interactive GUI configurator for the spacenavd daemon.
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Copyright (C) 2007 John Tsiombikas <nuclear@siggraph.org>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <unistd.h>
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#include <sys/wait.h>
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void frontend(int pfd);
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void backend(int pfd);
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static void sig(int s);
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int main(int argc, char **argv)
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{
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int cpid;
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int pipefd[2];
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signal(SIGCHLD, sig);
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pipe(pipefd);
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if((cpid = fork()) == 0) {
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/* child should be the setuid-root backend, write cfg and kill */
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close(pipefd[1]);
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backend(pipefd[0]);
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_exit(0);
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} else {
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/* parent, GUI frontend */
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close(pipefd[0]);
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frontend(pipefd[1]);
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kill(cpid, SIGTERM);
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}
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return 0;
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}
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static void sig(int s)
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{
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if(s == SIGCHLD) {
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wait(0);
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}
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}
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