[bpt/emacs.git] / etc / ulimit.hack

#!/bin/sh
#
# ulimit.hack: Create an intermediate program for use in
# between kernel initialization and init startup.
# This is needed on a 3b system if the standard CDLIMIT is
# so small that the dumped Emacs file cannot be written.
# This program causes everyone to get a bigger CDLIMIT value
# so that the dumped Emacs can be written out.
#
# Users of V.3.1 and later should not use this; see etc/MACHINES
# and reconfig your kernel's CDLIMIT parameter instead.
#
# Caveat: Heaven help you if you screw this up.  This puts
# a new program in as /etc/init, which then execs the real init.
#
cat > ulimit.init.c << \EOF
main(argc, argv)
int argc;
char *argv[];
{
	ulimit(2, 262144L);	/* "2" is the "set" command. */
	/* 262,144 allows for 128Mb files to be written. */
	/* If that value isn't suitable, roll your own.  */
	execv("/etc/real.init", argv);
}
EOF
#
# Compile it and put it in place of the usual init program.
#
cc ulimit.init.c -o ulimit.init
mv /etc/init /etc/real.init
mv ulimit.init /etc/ulimit.init
ln /etc/ulimit.init /etc/init
mv ulimit.init.c /etc/ulimit.init.c	# to keep src for this hack nearby.
chmod 0754 /etc/init
exit 0
#
# Upon system reboot, all processes will inherit the new large ulimit.

# arch-tag: 6f9a7072-9d07-4431-b0bb-e867648ad0b4
Commit	Line	Data
a933dad1 DL	1	#!/bin/sh
	2	#
	3	# ulimit.hack: Create an intermediate program for use in
	4	# between kernel initialization and init startup.
	5	# This is needed on a 3b system if the standard CDLIMIT is
	6	# so small that the dumped Emacs file cannot be written.
	7	# This program causes everyone to get a bigger CDLIMIT value
	8	# so that the dumped Emacs can be written out.
	9	#
	10	# Users of V.3.1 and later should not use this; see etc/MACHINES
	11	# and reconfig your kernel's CDLIMIT parameter instead.
	12	#
	13	# Caveat: Heaven help you if you screw this up. This puts
	14	# a new program in as /etc/init, which then execs the real init.
	15	#
	16	cat > ulimit.init.c << \EOF
	17	main(argc, argv)
	18	int argc;
	19	char *argv[];
	20	{
	21	ulimit(2, 262144L); /* "2" is the "set" command. */
	22	/* 262,144 allows for 128Mb files to be written. */
	23	/* If that value isn't suitable, roll your own. */
	24	execv("/etc/real.init", argv);
	25	}
	26	EOF
	27	#
	28	# Compile it and put it in place of the usual init program.
	29	#
	30	cc ulimit.init.c -o ulimit.init
	31	mv /etc/init /etc/real.init
	32	mv ulimit.init /etc/ulimit.init
	33	ln /etc/ulimit.init /etc/init
	34	mv ulimit.init.c /etc/ulimit.init.c # to keep src for this hack nearby.
	35	chmod 0754 /etc/init
	36	exit 0
	37	#
	38	# Upon system reboot, all processes will inherit the new large ulimit.
ab5796a9 MB	39
ab5796a9 MB	40	# arch-tag: 6f9a7072-9d07-4431-b0bb-e867648ad0b4