lucas vossberg wrote:
>
> hi,
>
> i 'm trying to raise the 32-groups-per-user limit in my 2.0.33 kernel
> running on a single cpu pentium system.
>
> is it a possible and safe way to raise the limit to 64 or even more by just
> setting NGROUPS_MAX in include/linux/limits.h?
Almost... (someone correct me if I am wrong)
You need to patch /PATH/linux/include/linux/limits.h and
/PATH/linux/include/ARCH/param.h
with:
-#define NGROUPS 32
+#define NGROUPS 256
Then patch glibc also with the same patch, otherwise it won't work.
With glibc2, you need the patch the sources. With glibc2.1 the
paramaters are gotten out of the running kernel (could be the kernel
source though). When both are done you should be OK. Try this on a
devel machine first!
ftp://admin.netus.com/OLD/glibc/glibc-2.0.7.NG265.patch
and
ftp://admin.netus.com/pub/hello is a quicky program to show the limits
sample:
[www@sc tmp]$ ./hello
_SC_NGROUPS_MAX 256 end
_SC_LOGIN_NAME_MAX 9 end
Num groups 78 end
I can't find the source to that right now though... :(
--I just returned from vacation. I am catching up as fast as I can. ( I also caught a lot of fish and got a nice tan :)
Christopher McCrory Lead Bithead, Netus Inc. chrismcc@netus.com admin@netus.com
"Linux: Because rebooting is for adding new hardware"
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