Full_Name: Ted C. Cheng Version: HEAD OS: Solaris 8 URL: https://dl.dropboxusercontent.com/u/94235048/fix_send_cli_cred.patch Submission from: (NULL) (76.174.250.179)

Importing fix from Symas #2230:

On platforms, such as Solaris 8, that do not support functions for getting client credential, client sends a message and fd for server to derive euid/egid. The server-side logic for deriving client credential was buggy.

This patch introduces sockaddr_un_cmp() to compare the socket path names, ignoring redundant "/" in the path, and only checks S_IFIFO mode. This patch has been tested on Solaris 8 and regression-tested fine on Solaris 10.