On Fri, Jul 30, 2004 at 10:28:27AM +0200, Florian La Roche wrote: > People should be aware of a way bigger NR_GROUPS for a current > kernel if compiled against a current glibc-kernheaders. It is actually NGROUPS_MAX that changed (and with sys/param.h NGROUPS as well). sysconf (_SC_NGROUPS_MAX) and getconf NGROUPS_MAX return 65536 for quite some time already on 2.6 kernels (sysconf parses /proc/sys/kernel/ngroups_max). Jakub