lkml.org 
[lkml]   [2005]   [Apr]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectLinux-2.6.11 can't disable CAD

    In the not-too distant past, one could disable Ctl-Alt-DEL.
    Can't do it anymore.

    Script started on Thu 07 Apr 2005 10:58:11 AM EDT
    [SNIPPED leading stuff...]

    mprotect(0xb7fe4000, 28672, PROT_READ|PROT_EXEC) = 0
    brk(0) = 0x804a000
    brk(0x8053000) = 0x8053000
    reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_CAD_OFF) = 0
    pause( <unfinished ...>
    _exit(0) = ?
    # exit
    Script done on Thu 07 Apr 2005 10:58:21 AM EDT

    Observe that reboot() returns 0 and `strace` understands what
    parameters were passed. The result is that, if I hit Ctl-Alt-Del,
    `init` will still execute the shutdown-order (INIT 0).

    A side note, while researching this problem, I think I found
    that LINUX_REBOOT_MAGIC2 is Linus' birthday (in hex). Maybe
    the problem is that he no longer observes his birthday?

    Cheers,
    Dick Johnson
    Penguin : Linux version 2.6.11 on an i686 machine (5537.79 BogoMips).
    Notice : All mail here is now cached for review by Dictator Bush.
    98.36% of all statistics are fiction.
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-04-07 17:20    [W:0.048 / U:58.456 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site