Move all process-related functions into process.c.
This commit is contained in:
Ivo Timmermans
parent
aa755206da
commit
2764532ea7
5 changed files with 389 additions and 305 deletions
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@ -1,13 +1,15 @@
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## Produce this file with automake to get Makefile.in
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# $Id: Makefile.am,v 1.4.4.6 2000/11/15 13:33:25 guus Exp $
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# $Id: Makefile.am,v 1.4.4.7 2000/11/16 17:54:27 zarq Exp $
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sbin_PROGRAMS = tincd
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tincd_SOURCES = conf.c connlist.c meta.c net.c netutl.c protocol.c subnet.c tincd.c
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tincd_SOURCES = conf.c connlist.c meta.c net.c netutl.c process.c \
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protocol.c subnet.c tincd.c
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INCLUDES = @INCLUDES@ -I$(top_builddir) -I$(top_srcdir)/lib -I$(top_srcdir)/intl
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noinst_HEADERS = conf.h connlist.h meta.h net.h netutl.h protocol.h subnet.h
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noinst_HEADERS = conf.h connlist.h meta.h net.h netutl.h process.h \
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protocol.h subnet.h
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LIBS = @LIBS@ @INTLLIBS@
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@ -16,4 +18,5 @@ tincd_LDADD = \
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localedir = $(datadir)/locale
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CFLAGS = @CFLAGS@ -DPKGLIBDIR=$(pkglibdir) -DCONFDIR=\"@sysconfdir@\" -DLOCALEDIR=\"$(localedir)\"
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CFLAGS = @CFLAGS@ -DPKGLIBDIR=$(pkglibdir) -DCONFDIR=\"@sysconfdir@\" \
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-DLOCALEDIR=\"$(localedir)\"
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131
src/net.c
131
src/net.c
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@ -17,7 +17,7 @@
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id: net.c,v 1.35.4.74 2000/11/15 22:07:36 zarq Exp $
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$Id: net.c,v 1.35.4.75 2000/11/16 17:54:27 zarq Exp $
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*/
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#include "config.h"
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@ -72,6 +72,7 @@
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#include "meta.h"
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#include "net.h"
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#include "netutl.h"
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#include "process.h"
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#include "protocol.h"
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#include "subnet.h"
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@ -94,134 +95,6 @@ char *unknown = NULL;
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subnet_t mymac;
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list_t *child_pids;
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void _execute_script(const char *name)
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{
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int error = 0;
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char *scriptname;
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char *s;
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int fd;
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if(netname)
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{
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asprintf(&s, "NETNAME=%s", netname);
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putenv(s); /* Don't free s! see man 3 putenv */
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}
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#ifdef HAVE_UNSETENV
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else
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{
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unsetenv("NETNAME");
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}
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#endif
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if(chdir(confbase) < 0)
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/* This cannot fail since we already read config files from this
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directory. - Guus */
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/* Yes this can fail, somebody could have removed this directory
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when we didn't pay attention. - Ivo */
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{
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if(chdir("/") < 0)
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/* Now if THIS fails, something wicked is going on. - Ivo */
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syslog(LOG_ERR, _("Couldn't chdir to `/': %m"));
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/* Continue anyway. */
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}
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asprintf(&scriptname, "%s/%s", confbase, name);
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/* Close all file descriptors */
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closelog();
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fcloseall();
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/* Open standard input */
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if(open("/dev/null", O_RDONLY) < 0)
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{
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syslog(LOG_ERR, _("Opening `/dev/null' failed: %m"));
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error = 1;
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}
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if(!error)
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{
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/* Standard output directly goes to syslog */
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openlog(name, LOG_CONS | LOG_PID, LOG_DAEMON);
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/* Standard error as well */
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if(dup2(1, 2) < 0)
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{
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syslog(LOG_ERR, _("System call `%s' failed: %m"),
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"dup2");
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error = 1;
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}
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}
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if(error && debug_lvl > 1)
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syslog(LOG_INFO, _("This means that any output the script generates will not be shown in syslog."));
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execl(scriptname, NULL);
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/* No return on success */
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if(errno != ENOENT) /* Ignore if the file does not exist */
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syslog(LOG_WARNING, _("Error executing `%s': %m"), scriptname);
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/* No need to free things */
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exit(0);
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}
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/*
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Execute the given script.
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This function doesn't really belong here.
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*/
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int execute_script(const char *name)
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{
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pid_t pid;
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if((pid = fork()) < 0)
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{
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syslog(LOG_ERR, _("System call `%s' failed: %m"),
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"fork");
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return -1;
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}
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if(pid)
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{
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list_append(child_pids, pid);
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return 0;
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}
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/* Child here */
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_execute_script(name);
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}
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int check_child(void *data)
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{
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pid_t pid;
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int status;
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pid = (pid_t) data;
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pid = waitpid(pid, &status, WNOHANG);
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if(WIFEXITED(status))
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{
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if(WIFSIGNALED(status)) /* Child was killed by a signal */
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{
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syslog(LOG_ERR, _("Child with PID %d was killed by signal %d (%s)"),
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pid, WTERMSIG(status), strsignal(WTERMSIG(status)));
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return -1;
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}
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if(WEXITSTATUS(status) != 0)
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{
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syslog(LOG_INFO, _("Child with PID %d exited with code %d"),
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WEXITSTATUS(status));
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}
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return -1;
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}
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}
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void check_children(void)
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{
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list_forall_nodes(child_pids, check_child);
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}
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int xsend(conn_list_t *cl, vpn_packet_t *inpkt)
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{
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vpn_packet_t outpkt;
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348
src/process.c
Normal file
348
src/process.c
Normal file
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@ -0,0 +1,348 @@
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/*
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process.c -- process management functions
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Copyright (C) 1999,2000 Ivo Timmermans <itimmermans@bigfoot.com>,
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2000 Guus Sliepen <guus@sliepen.warande.net>
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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 2 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, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id: process.c,v 1.1.2.1 2000/11/16 17:54:28 zarq Exp $
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*/
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#include "config.h"
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#include <list.h>
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/* A list containing all our children */
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list_t *child_pids;
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/* If zero, don't detach from the terminal. */
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int do_detach = 1;
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/*
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Detach from current terminal, write pidfile, kill parent
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*/
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int detach(void)
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{
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int fd;
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pid_t pid;
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if(do_detach)
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{
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ppid = getpid();
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if((pid = fork()) < 0)
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{
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perror("fork");
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return -1;
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}
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if(pid) /* parent process */
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{
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signal(SIGTERM, parent_exit);
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sleep(600); /* wait 10 minutes */
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exit(1);
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}
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}
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if(write_pidfile())
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return -1;
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if(do_detach)
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{
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if((fd = open("/dev/tty", O_RDWR)) >= 0)
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{
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if(ioctl(fd, TIOCNOTTY, NULL))
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{
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perror("ioctl");
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return -1;
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}
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close(fd);
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}
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if(setsid() < 0)
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return -1;
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kill(ppid, SIGTERM);
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}
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chdir("/"); /* avoid keeping a mointpoint busy */
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openlog(identname, LOG_CONS | LOG_PID, LOG_DAEMON);
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if(debug_lvl > DEBUG_NOTHING)
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syslog(LOG_NOTICE, _("tincd %s (%s %s) starting, debug level %d"),
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VERSION, __DATE__, __TIME__, debug_lvl);
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else
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syslog(LOG_NOTICE, _("tincd %s starting"), VERSION);
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xalloc_fail_func = memory_full;
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return 0;
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}
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/*
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Execute the program name, with sane environment. All output will be
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redirected to syslog.
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*/
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void _execute_script(const char *name)
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{
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int error = 0;
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char *scriptname;
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char *s;
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int fd;
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if(netname)
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{
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asprintf(&s, "NETNAME=%s", netname);
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putenv(s); /* Don't free s! see man 3 putenv */
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}
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#ifdef HAVE_UNSETENV
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else
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{
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unsetenv("NETNAME");
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}
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#endif
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if(chdir(confbase) < 0)
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/* This cannot fail since we already read config files from this
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directory. - Guus */
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/* Yes this can fail, somebody could have removed this directory
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when we didn't pay attention. - Ivo */
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{
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if(chdir("/") < 0)
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/* Now if THIS fails, something wicked is going on. - Ivo */
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syslog(LOG_ERR, _("Couldn't chdir to `/': %m"));
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/* Continue anyway. */
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}
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asprintf(&scriptname, "%s/%s", confbase, name);
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/* Close all file descriptors */
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closelog();
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fcloseall();
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/* Open standard input */
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if(open("/dev/null", O_RDONLY) < 0)
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{
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syslog(LOG_ERR, _("Opening `/dev/null' failed: %m"));
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error = 1;
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}
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if(!error)
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{
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/* Standard output directly goes to syslog */
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openlog(name, LOG_CONS | LOG_PID, LOG_DAEMON);
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/* Standard error as well */
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if(dup2(1, 2) < 0)
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{
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syslog(LOG_ERR, _("System call `%s' failed: %m"),
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"dup2");
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error = 1;
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}
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}
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if(error && debug_lvl > 1)
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syslog(LOG_INFO, _("This means that any output the script generates will not be shown in syslog."));
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execl(scriptname, NULL);
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/* No return on success */
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if(errno != ENOENT) /* Ignore if the file does not exist */
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syslog(LOG_WARNING, _("Error executing `%s': %m"), scriptname);
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/* No need to free things */
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exit(0);
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}
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/*
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Fork and execute the program pointed to by name.
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*/
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int execute_script(const char *name)
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{
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pid_t pid;
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if((pid = fork()) < 0)
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{
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syslog(LOG_ERR, _("System call `%s' failed: %m"),
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"fork");
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return -1;
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}
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if(pid)
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{
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list_append(child_pids, pid);
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return 0;
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}
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/* Child here */
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_execute_script(name);
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}
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/*
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Check a child (the pointer data is actually an integer, the PID of
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that child. A non-zero return value means that the child has exited
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and can be removed from our list.
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*/
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int check_child(void *data)
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{
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pid_t pid;
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int status;
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pid = (pid_t) data;
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pid = waitpid(pid, &status, WNOHANG);
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if(WIFEXITED(status))
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{
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if(WIFSIGNALED(status)) /* Child was killed by a signal */
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{
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syslog(LOG_ERR, _("Child with PID %d was killed by signal %d (%s)"),
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pid, WTERMSIG(status), strsignal(WTERMSIG(status)));
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return -1;
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}
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if(WEXITSTATUS(status) != 0)
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{
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syslog(LOG_INFO, _("Child with PID %d exited with code %d"),
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WEXITSTATUS(status));
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}
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return -1;
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}
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/* Child is still running */
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return 0;
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}
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/*
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Check the status of all our children.
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*/
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void check_children(void)
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{
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list_forall_nodes(child_pids, check_child);
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}
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/*
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Signal handlers.
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*/
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RETSIGTYPE
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sigterm_handler(int a)
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{
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if(debug_lvl > DEBUG_NOTHING)
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syslog(LOG_NOTICE, _("Got TERM signal"));
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cleanup_and_exit(0);
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}
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|
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RETSIGTYPE
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sigquit_handler(int a)
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{
|
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if(debug_lvl > DEBUG_NOTHING)
|
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syslog(LOG_NOTICE, _("Got QUIT signal"));
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cleanup_and_exit(0);
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}
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|
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RETSIGTYPE
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sigsegv_square(int a)
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{
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syslog(LOG_ERR, _("Got another SEGV signal: not restarting"));
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exit(0);
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}
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|
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RETSIGTYPE
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sigsegv_handler(int a)
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{
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syslog(LOG_ERR, _("Got SEGV signal"));
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cp_trace();
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|
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if(do_detach)
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{
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syslog(LOG_NOTICE, _("Trying to re-execute in 5 seconds..."));
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signal(SIGSEGV, sigsegv_square);
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close_network_connections();
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sleep(5);
|
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remove_pid(pidfilename);
|
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execvp(g_argv[0], g_argv);
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||||
}
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||||
else
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{
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syslog(LOG_NOTICE, _("Not restarting."));
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exit(0);
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||||
}
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}
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||||
|
||||
RETSIGTYPE
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sighup_handler(int a)
|
||||
{
|
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if(debug_lvl > DEBUG_NOTHING)
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syslog(LOG_NOTICE, _("Got HUP signal"));
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sighup = 1;
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}
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||||
|
||||
RETSIGTYPE
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sigint_handler(int a)
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{
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if(debug_lvl > DEBUG_NOTHING)
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syslog(LOG_NOTICE, _("Got INT signal, exiting"));
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cleanup_and_exit(0);
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}
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|
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RETSIGTYPE
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sigusr1_handler(int a)
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{
|
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dump_conn_list();
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}
|
||||
|
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RETSIGTYPE
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sigusr2_handler(int a)
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{
|
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dump_subnet_list();
|
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}
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|
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RETSIGTYPE
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sighuh(int a)
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{
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syslog(LOG_WARNING, _("Got unexpected signal %d (%s)"), a, strsignal(a));
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cp_trace();
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}
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|
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void
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setup_signals(void)
|
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{
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int i;
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|
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for(i=0;i<32;i++)
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signal(i,sighuh);
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|
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if(signal(SIGTERM, SIG_IGN) != SIG_ERR)
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signal(SIGTERM, sigterm_handler);
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if(signal(SIGQUIT, SIG_IGN) != SIG_ERR)
|
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signal(SIGQUIT, sigquit_handler);
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if(signal(SIGSEGV, SIG_IGN) != SIG_ERR)
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signal(SIGSEGV, sigsegv_handler);
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if(signal(SIGHUP, SIG_IGN) != SIG_ERR)
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signal(SIGHUP, sighup_handler);
|
||||
signal(SIGPIPE, SIG_IGN);
|
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if(signal(SIGINT, SIG_IGN) != SIG_ERR)
|
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signal(SIGINT, sigint_handler);
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signal(SIGUSR1, sigusr1_handler);
|
||||
signal(SIGUSR2, sigusr2_handler);
|
||||
signal(SIGCHLD, SIG_IGN);
|
||||
}
|
||||
|
||||
RETSIGTYPE parent_exit(int a)
|
||||
{
|
||||
exit(0);
|
||||
}
|
||||
30
src/process.h
Normal file
30
src/process.h
Normal file
|
|
@ -0,0 +1,30 @@
|
|||
/*
|
||||
process.h -- header file for process.c
|
||||
Copyright (C) 1999,2000 Ivo Timmermans <itimmermans@bigfoot.com>,
|
||||
2000 Guus Sliepen <guus@sliepen.warande.net>
|
||||
|
||||
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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
|
||||
$Id: process.h,v 1.1.2.1 2000/11/16 17:54:28 zarq Exp $
|
||||
*/
|
||||
|
||||
#ifndef __TINC_PROCESS_H__
|
||||
#define __TINC_PROCESS_H__
|
||||
|
||||
#include <list.h>
|
||||
|
||||
extern list_t *child_pids;
|
||||
|
||||
#endif /* __TINC_PROCESS_H__ */
|
||||
174
src/tincd.c
174
src/tincd.c
|
|
@ -17,7 +17,7 @@
|
|||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
|
||||
$Id: tincd.c,v 1.10.4.28 2000/11/15 01:06:13 zarq Exp $
|
||||
$Id: tincd.c,v 1.10.4.29 2000/11/16 17:54:29 zarq Exp $
|
||||
*/
|
||||
|
||||
#include "config.h"
|
||||
|
|
@ -83,7 +83,7 @@ static int show_version;
|
|||
static int kill_tincd = 0;
|
||||
|
||||
/* If zero, don't detach from the terminal. */
|
||||
static int do_detach = 1;
|
||||
extern int do_detach;
|
||||
|
||||
/* If nonzero, generate public/private keypair for this host/net. */
|
||||
static int generate_keys = 0;
|
||||
|
|
@ -251,67 +251,6 @@ void memory_full(int size)
|
|||
exit(1);
|
||||
}
|
||||
|
||||
/*
|
||||
Detach from current terminal, write pidfile, kill parent
|
||||
*/
|
||||
int detach(void)
|
||||
{
|
||||
int fd;
|
||||
pid_t pid;
|
||||
|
||||
if(do_detach)
|
||||
{
|
||||
ppid = getpid();
|
||||
|
||||
if((pid = fork()) < 0)
|
||||
{
|
||||
perror("fork");
|
||||
return -1;
|
||||
}
|
||||
if(pid) /* parent process */
|
||||
{
|
||||
signal(SIGTERM, parent_exit);
|
||||
sleep(600); /* wait 10 minutes */
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
if(write_pidfile())
|
||||
return -1;
|
||||
|
||||
if(do_detach)
|
||||
{
|
||||
if((fd = open("/dev/tty", O_RDWR)) >= 0)
|
||||
{
|
||||
if(ioctl(fd, TIOCNOTTY, NULL))
|
||||
{
|
||||
perror("ioctl");
|
||||
return -1;
|
||||
}
|
||||
close(fd);
|
||||
}
|
||||
|
||||
if(setsid() < 0)
|
||||
return -1;
|
||||
|
||||
kill(ppid, SIGTERM);
|
||||
}
|
||||
|
||||
chdir("/"); /* avoid keeping a mointpoint busy */
|
||||
|
||||
openlog(identname, LOG_CONS | LOG_PID, LOG_DAEMON);
|
||||
|
||||
if(debug_lvl > DEBUG_NOTHING)
|
||||
syslog(LOG_NOTICE, _("tincd %s (%s %s) starting, debug level %d"),
|
||||
VERSION, __DATE__, __TIME__, debug_lvl);
|
||||
else
|
||||
syslog(LOG_NOTICE, _("tincd %s starting"), VERSION);
|
||||
|
||||
xalloc_fail_func = memory_full;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
Close network connections, and terminate neatly
|
||||
*/
|
||||
|
|
@ -490,112 +429,3 @@ main(int argc, char **argv, char **envp)
|
|||
}
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sigterm_handler(int a)
|
||||
{
|
||||
if(debug_lvl > DEBUG_NOTHING)
|
||||
syslog(LOG_NOTICE, _("Got TERM signal"));
|
||||
|
||||
cleanup_and_exit(0);
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sigquit_handler(int a)
|
||||
{
|
||||
if(debug_lvl > DEBUG_NOTHING)
|
||||
syslog(LOG_NOTICE, _("Got QUIT signal"));
|
||||
cleanup_and_exit(0);
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sigsegv_square(int a)
|
||||
{
|
||||
syslog(LOG_ERR, _("Got another SEGV signal: not restarting"));
|
||||
exit(0);
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sigsegv_handler(int a)
|
||||
{
|
||||
syslog(LOG_ERR, _("Got SEGV signal"));
|
||||
cp_trace();
|
||||
|
||||
if(do_detach)
|
||||
{
|
||||
syslog(LOG_NOTICE, _("Trying to re-execute in 5 seconds..."));
|
||||
signal(SIGSEGV, sigsegv_square);
|
||||
close_network_connections();
|
||||
sleep(5);
|
||||
remove_pid(pidfilename);
|
||||
execvp(g_argv[0], g_argv);
|
||||
}
|
||||
else
|
||||
{
|
||||
syslog(LOG_NOTICE, _("Not restarting."));
|
||||
exit(0);
|
||||
}
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sighup_handler(int a)
|
||||
{
|
||||
if(debug_lvl > DEBUG_NOTHING)
|
||||
syslog(LOG_NOTICE, _("Got HUP signal"));
|
||||
sighup = 1;
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sigint_handler(int a)
|
||||
{
|
||||
if(debug_lvl > DEBUG_NOTHING)
|
||||
syslog(LOG_NOTICE, _("Got INT signal, exiting"));
|
||||
cleanup_and_exit(0);
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sigusr1_handler(int a)
|
||||
{
|
||||
dump_conn_list();
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sigusr2_handler(int a)
|
||||
{
|
||||
dump_subnet_list();
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sighuh(int a)
|
||||
{
|
||||
syslog(LOG_WARNING, _("Got unexpected signal %d (%s)"), a, strsignal(a));
|
||||
cp_trace();
|
||||
}
|
||||
|
||||
void
|
||||
setup_signals(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
for(i=0;i<32;i++)
|
||||
signal(i,sighuh);
|
||||
|
||||
if(signal(SIGTERM, SIG_IGN) != SIG_ERR)
|
||||
signal(SIGTERM, sigterm_handler);
|
||||
if(signal(SIGQUIT, SIG_IGN) != SIG_ERR)
|
||||
signal(SIGQUIT, sigquit_handler);
|
||||
if(signal(SIGSEGV, SIG_IGN) != SIG_ERR)
|
||||
signal(SIGSEGV, sigsegv_handler);
|
||||
if(signal(SIGHUP, SIG_IGN) != SIG_ERR)
|
||||
signal(SIGHUP, sighup_handler);
|
||||
signal(SIGPIPE, SIG_IGN);
|
||||
if(signal(SIGINT, SIG_IGN) != SIG_ERR)
|
||||
signal(SIGINT, sigint_handler);
|
||||
signal(SIGUSR1, sigusr1_handler);
|
||||
signal(SIGUSR2, sigusr2_handler);
|
||||
signal(SIGCHLD, SIG_IGN);
|
||||
}
|
||||
|
||||
RETSIGTYPE parent_exit(int a)
|
||||
{
|
||||
exit(0);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue