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    SubjectRe: SCO's infringing files list

    Bingo!

    On Tue, 23 Dec 2003, Mitchell Blank Jr wrote:
    >
    > This does seem to be the case - from an FAQ that H J Lu posted about that time:
    >
    > | From: hlu@yoda.eecs.wsu.edu (H.J. Lu)
    > | Subject: FAQ about gcc (how to compile program under Linux)
    > | Date: Sun, 19 Jul 92 06:40:05 GMT
    > | [...]
    > | Another file, XXXXinc.tar.Z, where XXXX is the current version number
    > | of Linux kernel, has all the header files to replace the header files
    > | from kernel. YOU MUST INSTALL IT. Please read README for details.

    Ok, this is the source.

    In particular, I can re-create _exactly_ the linux-0.97 "errno.h" file by
    using the "sys_errlist[]" contents from "libc-2.2.2". In particular, this
    trivial loop will generate the exact (byte-for-byte) list that is in the
    kernel:

    int i;

    for (i = 1; i < 122; i++) {
    const char *name = names[i];
    int n = strlen(name);
    char *tabs = "\t\t"+(n > 7);
    const char *expl = libc222_errlist[i];
    printf("#define\t%s%s%2d\t/* %s */\n",
    name, tabs, i, expl);
    }

    here, the "names[]" array was filled in with the error names, ie

    const char *names[] = { "none",
    "EPERM", "ENOENT", "ESRCH", "EINTR", "EIO", "ENXIO", "E2BIG",
    ...

    and the "libc222_errlist[]" array was filled in with the strings found by
    just downloading the old "libc-2.2.2" binary that can still be found at

    http://www.ibiblio.org/pub/Linux/libs/oldlibs/libc-2.2.2/

    and then just doing a "strings - libc-2.2.2" and "sys_errlist[]" will be
    obvious:

    static char *libc222_errlist[] = {
    "Unknown error",
    "Operation not permitted",
    ...

    This was literally a five-minute hack (I wrote the silly loop yesterday to
    see what it does with the current "strerror()" - there is very good
    correlation even today, but using the libc-2.2.2 sys_nerrlist[] you get
    _exactly_ the same result).

    So this is definitely the source of the kernel error header. It's either a
    file from the libc sources, or it is literally auto-generated like the
    above (I actually suspect the latter - now that I did the auto-generation
    it all felt very familiar, but that may just be my brain rationalizing
    things. Humans are good at rationalizing reality.).

    Can anybody find the actual libc _sources_? Not the kernel headers that
    hjl mentions (those are the old ones from _before_ the change), but the
    file "libc-2.2.2.tar.Z"?

    Anyway, we know where the kernel header comes from. Let's figure out where
    the libc data comes from.

    Linus
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