diff options
Diffstat (limited to 'usr.sbin/i4b/isdnd/process.c')
| -rw-r--r-- | usr.sbin/i4b/isdnd/process.c | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/usr.sbin/i4b/isdnd/process.c b/usr.sbin/i4b/isdnd/process.c deleted file mode 100644 index 47c9eda550a1a..0000000000000 --- a/usr.sbin/i4b/isdnd/process.c +++ /dev/null @@ -1,219 +0,0 @@ -/* - * Copyright (c) 1997, 1998 Hellmuth Michaelis. 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. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. - * - *--------------------------------------------------------------------------- - * - * i4b daemon - process handling routines - * -------------------------------------- - * - * $Id: process.c,v 1.6 1998/12/05 18:03:33 hm Exp $ - * - * last edit-date: [Sat Dec 5 18:11:42 1998] - * - * -hm debugging processhandling - * - *---------------------------------------------------------------------------*/ - -#include "isdnd.h" - -/*---------------------------------------------------------------------------* - * check if another instance of us is already running - *---------------------------------------------------------------------------*/ -void -check_pid(void) -{ - FILE *fp; - - /* check if another lock-file already exists */ - - if((fp = fopen(PIDFILE, "r")) != NULL) - { - /* lockfile found, check */ - - int oldpid; - - /* read pid from file */ - - if((fscanf(fp, "%d", &oldpid)) != 1) - { - log(LL_ERR, "ERROR, reading pid from lockfile failed, terminating!"); - exit(1); - } - - /* check if process got from file is still alive */ - - if((kill(oldpid, 0)) != 0) - { - /* process does not exist */ - - /* close file */ - - fclose(fp); - - DBGL(DL_PROC, (log(LL_DBG, "removing old lock-file %s", PIDFILE))); - - /* remove file */ - - unlink(PIDFILE); - } - else - { - /* process is still alive */ - - log(LL_ERR, "ERROR, another daemon is already running, pid = %d, terminating!", oldpid); - exit(1); - } - } -} - -/*---------------------------------------------------------------------------* - * establish and init process lock file - *---------------------------------------------------------------------------*/ -void -write_pid(void) -{ - FILE *fp; - - /* write my pid into lock-file */ - - if((fp = fopen(PIDFILE, "w")) == NULL) - { - log(LL_ERR, "ERROR, can't open lockfile for writing, terminating"); - do_exit(1); - } - - if((fprintf(fp, "%d", (int)getpid())) == EOF) - { - log(LL_ERR, "ERROR, can't write pid to lockfile, terminating"); - do_exit(1); - } - - fsync(fileno(fp)); - - fclose(fp); -} - -/*---------------------------------------------------------------------------* - * become a daemon - *---------------------------------------------------------------------------*/ -void -daemonize(void) -{ - int fd; - - switch (fork()) - { - case -1: /* error */ - log(LL_ERR, "ERROR, daemonize/fork: %s", strerror(errno)); - exit(1); - case 0: /* child */ - break; - default: /* parent */ - exit(0); - } - - /* new session / no control tty */ - - if(setsid() == -1) - { - log(LL_ERR, "ERROR, setsid returns: %s", strerror(errno)); - exit(1); - } - - /* go away from mounted dir */ - - chdir("/"); - - /* move i/o to another device ? */ - - if(do_fullscreen && do_rdev) - { - char *tp; - - if((fd = open(rdev, O_RDWR, 0)) != -1) - { - if(!isatty(fd)) - { - log(LL_ERR, "ERROR, device %s is not a tty!", rdev); - exit(1); - } - if((dup2(fd, STDIN_FILENO)) == -1) - { - log(LL_ERR, "ERROR, dup2 stdin: %s", strerror(errno)); - exit(1); - } - if((dup2(fd, STDOUT_FILENO)) == -1) - { - log(LL_ERR, "ERROR, dup2 stdout: %s", strerror(errno)); - exit(1); - } - if((dup2(fd, STDERR_FILENO)) == -1) - { - log(LL_ERR, "ERROR, dup2 stderr: %s", strerror(errno)); - exit(1); - } - } - else - { - log(LL_ERR, "ERROR, cannot open redirected device: %s", strerror(errno)); - exit(1); - } - - if(fd > 2) - { - if((close(fd)) == -1) - { - log(LL_ERR, "ERROR, close in daemonize: %s", strerror(errno)); - exit(1); - } - } - - /* curses output && fork NEEDS controlling tty */ - - if((ioctl(STDIN_FILENO, TIOCSCTTY, (char *)NULL)) < 0) - { - log(LL_ERR, "ERROR, cannot setup tty as controlling terminal: %s", strerror(errno)); - exit(1); - } - - /* in case there is no environment ... */ - - if(((tp = getenv("TERM")) == NULL) || (*tp == '\0')) - { - if(do_ttytype == 0) - { - log(LL_ERR, "ERROR, no environment variable TERM found and -t not specified!"); - exit(1); - } - - if((setenv("TERM", ttype, 1)) != 0) - { - log(LL_ERR, "ERROR, setenv TERM=%s failed: %s", ttype, strerror(errno)); - exit(1); - } - } - } -} - -/* EOF */ |