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Annotation of 43BSDReno/contrib/emacs-18.55/etc/ulimit.hack, revision 1.1.1.1

1.1       root        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.

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