sss_client: Re-check memcache after acquiring the lock Resolves: https://fedorahosted.org/sssd/ticket/2581 Reviewed-by: Michal Židek <mzidek@redhat.com>

sss_client: Use initgr mmap cache in client code Resolves: https://fedorahosted.org/sssd/ticket/2485 Reviewed-by: Michal Židek <mzidek@redhat.com>

Suppress safealign warnings with DISCARD_ALIGN. These warnings were all false positives. fixes: https://fedorahosted.org/sssd/ticket/1359 Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>

Properly align buffer when storing pointers. Properly align buffer address to sizeof(char *) when storing pointers to strings. resolves: https://fedorahosted.org/sssd/ticket/1359

sss_client: Use SAFEALIGN_COPY_<type> macros where appropriate. resolves: https://fedorahosted.org/sssd/ticket/1359

Fix errors reported by rpmlint

sss_client: Group lookups should work even when fastcache cannot be initialized https://fedorahosted.org/sssd/ticket/1415

sss_client: shared memory cache group map support

nss_group: Cache the result from sssd when the glibc provided buffer is too small.

NSS: Add sss_readrep_copy_string There were many places in the client code where we were duplicating a loop to copy data in from the response buffer. This patch turns those loops into a function for easier maintenance and easier-to-read *readrep() routines.

NSS: Validate input string lengths Also fixes a return value bug where we were returning errno error codes instead of nss_status codes. Fixes https://fedorahosted.org/sssd/ticket/1135

sss_client: make code thread-safe Add mutexes around nss operations and serialize them. This is necessary because nss operations may have global state. For pam it is sufficient to protect socket operations instead. As pam functions use only the provided pam handler. Fixes: https://fedorahosted.org/sssd/ticket/640

Rename group.c and passwd.c for clarity Prefixing group.c and passwd.c with "nss_" similar to the way the PAM client sources are prefixed with "pam_"