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. | |
6b61353c KH |
39 | |
40 | # arch-tag: 6f9a7072-9d07-4431-b0bb-e867648ad0b4 |