Re: [libvirt] [PATCH] build: tolerate unlimited group size

POSIX allows sysconf(_SC_GETPW_R_SIZE_MAX) to return -1 if there is no fixed limit, and requires ERANGE errors to track real size. http://pubs.opengroup.org/onlinepubs/9699919799/functions/getpwuid_r.html Also, on error for get*_r functions, errno is undefined, and the real error was the return value. * src/util/util.c (virGetUserEnt, virGetUserID, virGetGroupID) (virSetUIDGID): Cope with sysconf failure or too small buffer. Reported by Matthias Bolte. ---