ditto@cbmvax.UUCP (Michael "Ford" Ditto) (08/08/88)
Here's my simple errdemon to be used on the Unix PC when the Status
Manager (/etc/smgr) is not being used.
Basically, any system message that would have popped up in a cute,
annoying little window (with the [!!] icon) will now be appended to
/usr/adm/errfile instead. Unfortunately, this includes messages sent
via write(1) to a user logged in on a window, but this is AT&T/CT's
idea, not mine.
-=] Ford [=-
#! /bin/sh
# This is a shell archive, meaning:
# 1. Remove everything above the #! /bin/sh line.
# 2. Save the resulting text in a file.
# 3. Execute the file with /bin/sh (not csh) to create the files:
# errdemon.c
# This archive created: Sun Aug 7 22:55:00 1988
export PATH; PATH=/bin:$PATH
echo shar: extracting "'errdemon.c'" '(1495 characters)'
if test -f 'errdemon.c'
then
echo shar: will not over-write existing file "'errdemon.c'"
else
sed 's/^X//' << \SHAR_EOF > 'errdemon.c'
X#include <stdio.h>
X#include <fcntl.h>
X#include <signal.h>
X
Xextern char *ctime();
X
X
XFILE *logfp;
X
X
Xvoid handle_sig(sig)
Xint sig;
X{
X long clock;
X time (&clock);
X fprintf(logfp, "errdemon stopping due to signal %d on %s\n",
X sig, ctime(&clock));
X
X exit(sig!=SIGTERM);
X}
X
X
Xmain(argc, argv)
Xint argc;
Xchar *argv[];
X{
X char errbuf[256];
X long clock;
X int i, len, errfd;
X char *errfile = "/usr/adm/errfile";
X
X if (argc>1)
X errfile = argv[1];
X
X logfp = fopen(errfile, "a");
X if (logfp == NULL)
X {
X sprintf(errbuf, "errdemon: can't open %s", errfile);
X perror(errbuf);
X return -1;
X }
X
X switch (fork())
X {
X case -1:
X perror("errdemon: fork");
X return -1;
X case 0:
X break;
X default:
X return 0;
X }
X
X setpgrp();
X signal(SIGINT, handle_sig);
X signal(SIGQUIT, handle_sig);
X signal(SIGTERM, handle_sig);
X signal(SIGHUP, handle_sig);
X
X close(2);
X while (dup(fileno(logfp)) != 2)
X ;
X close(0);
X close(1);
X
X time(&clock);
X fprintf(logfp, "\n\n%s: started on %s\n", argv[0], ctime(&clock));
X fflush(logfp);
X
X errfd = open("/dev/error", O_RDONLY);
X if (errfd<0)
X {
X perror("errdemon: can't open /dev/error");
X return -1;
X }
X
X while (1)
X {
X len = read(errfd, errbuf, sizeof errbuf);
X if (len<0)
X {
X perror("errdemon: error reading /dev/error");
X return -2;
X }
X
X time(&clock);
X fprintf(logfp, "%.24s: pid %5d: %.*s\n",
X ctime(&clock), *(long *)errbuf, len-4, errbuf+4);
X fflush(logfp);
X }
X}
SHAR_EOF
if test 1495 -ne "`wc -c < 'errdemon.c'`"
then
echo shar: error transmitting "'errdemon.c'" '(should have been 1495 characters)'
fi
fi # end of overwriting check
# End of shell archive
exit 0
--
-=] Ford [=-
. . (In Real Life: Mike Ditto)
. : , ford@kenobi.cts.com
This space under construction, ...!ucsd!elgar!ford
pardon our dust. ditto@cbmvax.commodore.com