176 lines
4.4 KiB
C
176 lines
4.4 KiB
C
/*
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* Copyright (c) 1991 by the University of Washington
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* Copyright (c) 1992, 1993 by the University of Southern California
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*
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* For copying and distribution information, please see the file
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* <usc-license.h>
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*
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* Written by bcn 1991 to restart server on command or failure
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* Modified by bcn 1/20/93 to use new arguments to dirsrv
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* Modified by swa 12/93 to not use local buffers or sprintf().
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*/
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#include <usc-license.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h> /* for def of external errno variable */
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#include <sys/param.h>
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#include <ardp.h>
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#include <pfs.h>
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#include <pserver.h>
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#include <plog.h>
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#include <pmachine.h>
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#include <psrv.h> /* For close_plog */
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#include <pparse.h>
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#include "dirsrv.h"
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#include <sockettime.h>
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/* NOTE: For SOLARIS, this must NOT be <signal.h> which we override
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in ../include/signal.h so that sigset_t gets defined.
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This is unfortunately neccessary since we are POSIX_SIGNAL
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compliant, but not in general (yet) POSIX compliant */
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#include <posix_signal.h> /* for SIG_SETMASK & sigset_t*/
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/*
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* restart server restarts the server by calling exec. Before
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* restarting, it logs the current statisitcs which would otherwise
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* be lost.
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*/
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#ifndef NDEBUG
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int attemptRestart = 0;
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#endif
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static char * in_port_str = NULL;
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static char * fcount_str = NULL;
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void
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set_restart_params(int fcount, /* count of # of failures */
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int inport /* UDP port # we use. (NOT a descriptor #). */ )
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{
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assert(P_IS_THIS_THREAD_MASTER());
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in_port_str = qsprintf_stcopyr(in_port_str, "-p#%d", inport);
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fcount_str = qsprintf_stcopyr(fcount_str, "-F%d",
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(fcount < 99999 ? fcount : 99999));
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}
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void
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restart_server(int fcount, char *estring)
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{
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static int still_going = 0; /* set if restart attempt in progress */
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int f;
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char *dsargv[50]; /* Args to dirsrv */
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int dsargc = 0; /* Count of args to dirsrv */
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#ifndef NDEBUG
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attemptRestart = 1; /* Set a flag so can debug things */
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#endif
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if(still_going > 10) exit(1); /* It's the energizer rabbit */
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#ifdef TIMEOUT_APPROACH
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alarm(0); /*Make sure we dont get interrupted*/
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#endif
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if(still_going++ == 0 || p__is_out_of_memory) {
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/* If first time through */
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if (!(p_th_mutex_trylock(p_th_mutexPSRV_LOG))) {
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/* Log statistics before we forget them on restart */
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log_server_stats();
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close_plog();
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}
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}
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/* Close all files except stdin, stdout, and stderr */
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/* which should still be /dev/null, and in_port */
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/* which we might not be able to reopen */
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for (f = 3; f < OPEN_MAX; f++) {
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if(f != in_port) (void) close(f);
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}
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/*dsargv now built at startup in set_restart_params */
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dsargv[dsargc++] = "dirsrv";
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/* Port to listen on */
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if(in_port >= 0) {
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dsargv[dsargc++] = in_port_str;
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}
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if(portname) {
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dsargv[dsargc++] = "-p";
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dsargv[dsargc++] = portname;
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}
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if(estring) {
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dsargv[dsargc++] = "-E";
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dsargv[dsargc++] = estring;
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}
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if(fcount > 0) {
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dsargv[dsargc++] = fcount_str;
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}
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dsargv[dsargc++] = "-h";
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dsargv[dsargc++] = hostname;
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dsargv[dsargc++] = "-S";
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dsargv[dsargc++] = shadow;
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dsargv[dsargc++] = "-T";
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dsargv[dsargc++] = pfsdat; /* storage */
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if(root && *root) {
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dsargv[dsargc++] = "-r";
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dsargv[dsargc++] = root;
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}
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if(aftpdir && *aftpdir) {
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dsargv[dsargc++] = "-f";
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dsargv[dsargc++] = aftpdir;
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}
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if(afsdir && *afsdir) {
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dsargv[dsargc++] = "-a";
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dsargv[dsargc++] = afsdir;
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}
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/* logfile if changed on command line */
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if(logfile_arg) {
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dsargv[dsargc++] = "-L";
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dsargv[dsargc++] = logfile_arg;
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}
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dsargv[dsargc++] = NULL;
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#ifdef POSIX_SIGNALS
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{
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sigset_t set;
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sigemptyset(&set);
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sigprocmask(SIG_SETMASK, &set, (sigset_t *)NULL);
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}
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#else
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sigsetmask(0);
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#endif /*POSIX_SIGNALS*/
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/* Restart the server specifying the appropriate flags */
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execv(P_DIRSRV_BINARY,dsargv);
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/* If we get here, the exec failed */
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/* Oops - cant write to log since we closed it ! */
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#ifdef OLDSWA
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plog(L_FAILURE,NOREQ,
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#else
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fprintf(stderr,
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#endif
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"***Failure - Couldn't restart server %s (%s) - execv exited with \
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error # %d, error name %s: - aborting***",
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P_DIRSRV_BINARY, estring ? estring : "", errno, unixerrstr()
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);
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exit(1);
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}
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