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