| 410c8acf |
1 | /* -*-c-*- |
| 2 | * |
| 3 | * $Id: util.c,v 1.1 2001/02/03 20:26:37 mdw Exp $ |
| 4 | * |
| 5 | * Utilities for the client and the server |
| 6 | * |
| 7 | * (c) 2001 Straylight/Edgeware |
| 8 | */ |
| 9 | |
| 10 | /*----- Licensing notice --------------------------------------------------* |
| 11 | * |
| 12 | * This file is part of Trivial IP Encryption (TrIPE). |
| 13 | * |
| 14 | * TrIPE is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License as published by |
| 16 | * the Free Software Foundation; either version 2 of the License, or |
| 17 | * (at your option) any later version. |
| 18 | * |
| 19 | * TrIPE is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with TrIPE; if not, write to the Free Software Foundation, |
| 26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 27 | */ |
| 28 | |
| 29 | /*----- Revision history --------------------------------------------------* |
| 30 | * |
| 31 | * $Log: util.c,v $ |
| 32 | * Revision 1.1 2001/02/03 20:26:37 mdw |
| 33 | * Initial checkin. |
| 34 | * |
| 35 | */ |
| 36 | |
| 37 | /*----- Header files ------------------------------------------------------*/ |
| 38 | |
| 39 | #include <errno.h> |
| 40 | #include <stdio.h> |
| 41 | #include <stdlib.h> |
| 42 | #include <string.h> |
| 43 | |
| 44 | #include <sys/types.h> |
| 45 | #include <unistd.h> |
| 46 | #include <fcntl.h> |
| 47 | |
| 48 | #include "util.h" |
| 49 | |
| 50 | #include <sys/ioctl.h> |
| 51 | |
| 52 | /*----- Main code ---------------------------------------------------------*/ |
| 53 | |
| 54 | /* --- @u_daemon@ --- * |
| 55 | * |
| 56 | * Arguments: --- |
| 57 | * |
| 58 | * Returns: Zero if OK, nonzero on failure. |
| 59 | * |
| 60 | * Use: Becomes a daemon. |
| 61 | */ |
| 62 | |
| 63 | int u_daemon(void) |
| 64 | { |
| 65 | pid_t kid; |
| 66 | |
| 67 | if ((kid = fork()) < 0) |
| 68 | return (-1); |
| 69 | if (kid) |
| 70 | _exit(0); |
| 71 | #ifdef TIOCNOTTY |
| 72 | { |
| 73 | int fd; |
| 74 | if ((fd = open("/dev/tty", O_RDONLY)) >= 0) { |
| 75 | ioctl(fd, TIOCNOTTY); |
| 76 | close(fd); |
| 77 | } |
| 78 | } |
| 79 | #endif |
| 80 | setsid(); |
| 81 | |
| 82 | if (fork() > 0) |
| 83 | _exit(0); |
| 84 | return (0); |
| 85 | } |
| 86 | |
| 87 | /*----- That's all, folks -------------------------------------------------*/ |
~mdw / tripe / blame