Play Kernel Hangman!

After a stranger than usual late-night #kernelnewbies session on Thursday, I was inspired to come up with Kernel Hangman. This is the traditional game of hangman, except that the words you have to guess are kernel symbols.

So, test your knowledge of kernel trivia and play it at
http://user-mode-linux.sourceforge.net/cgi-bin/hangman

Jeff

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Oh, no, no, no, no... my productivity!

I love it. :) My interest in #kernelnewbies has certainly been tweaked.

So what method did you use to get your list of kernel symbols? (i.e. is it arch specific as System.map or do you have a way of pulling all archs?)

Now, can you make a version to guess the values of various #defines? Or perhaps given the definition, guess the #define. ;) Twisted individual... and I mean that in the best possible way... ;)

C-ya,

Eli
--------------------. "To the systems programmer, users and applications
Eli Carter | serve only to provide a test load."
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Pah! I'll be impressed when you code it as a kernel-module, activating with left-alt scrolllock or something (that still appears to be free).

:-p

                        Frank v Waveren
                        fvw@[var.cx|stack.nl|chello.nl|dse.nl]
                        ICQ# 10074100
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Actually, OpenBSD already has this (in the kernel !) After a kernel crash ones, I got in the kerneldebugger. I didn't really know how to use it, but I could play hangman. I just downloaded the source (pub/OpenBSD/2.7/srcsys.tar.gz) to be sure, here is a short excerpt from sys/ddb/db_hangman.c:
---
static __inline char *
db_randomsym(lenp)

        size_t  *lenp;
{
        register char   *p, *q;
                /* choose random symtab */
        register db_symtab_t    stab = db_istab(db_random(db_nsymtabs));

                /* choose random symbol from the table */
        q = db_qualify(X_db_isym(stab,

db_random(X_db_nsyms(stab))),stab->name);

                /* don't show symtab name if there are less than 3 of 'em
*/
        if (db_nsymtabs < 3)
                while(*q++ != ':');

                /* strlen(q) && ignoring underscores and colons */
        for ((*lenp) = 0, p = q; *p; p++)
                if (ISALPHA(*p))
                        (*lenp)++;

        return q;
}

static char hangpic[]=

        "\n88888 \r\n"
          "9 7 6 \r\n"
          "97  5 \r\n"
          "9  423\r\n"
          "9   2 \r\n"
          "9  1 0\r\n"
          "9\r\n"
          "9  ";

static char substchar[]="\\/|\\/O|/-|";

---
and an other part:
---

void
db_hangman(addr, haddr, count, modif)

        db_expr_t addr;
        int     haddr;
        db_expr_t count;
        char    *modif;
{
        if (modif[0] == 's' && '0' <= modif[1] && modif[1] <= '9')
                skill = modif[1] - '0';
        else
                skill = 5;

        while (db_hangon());
}

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I know. That's what prompted this. My little mind got to working after someone on #kernelnewbies told me about the hangman program in the OpenBSD kernel debugger, and the rest is history...

Jeff

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From: "Leen Besselink" <[email protected]>

of

Now that might be the best argument for a kernel debugger we've seen yet.

{O,o} Joanne Dow, somewhat crazed.

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