diff options
Diffstat (limited to 'missing/daemon.c')
-rw-r--r-- | missing/daemon.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/missing/daemon.c b/missing/daemon.c new file mode 100644 index 0000000..9bf6416 --- /dev/null +++ b/missing/daemon.c @@ -0,0 +1,50 @@ +/* + * Copyright (c) 2006 WIDE Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/types.h> +#include <unistd.h> +#include <fcntl.h> + +int +daemon(int nochdir, int noclose) +{ + if (fork() != 0) + _exit(0); + if (nochdir == 0) + (void) chdir("/"); + if (noclose == 0) { + (void) close(0); + (void) open("/dev/null", O_RDWR); + (void) dup2(0, 1); + (void) dup2(0, 2); + } + (void) setsid(); + if (fork() != 0) + _exit(0); + return (0); +} |