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. Model our behavior after the example in POSIX itself: 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.
Showing
想要评论请 注册 或 登录