The nscd database mapped in processes can change at any time. We
have to be more vigilant when it comes to using that memory. Test
the data entries are valid in their entire size, don't read data
again from memory once we verified it, and make sure the trailing
pointer is not going off the deep end.
instead of portstr to nscd_getserv_r. Patch by
Roman Kagan <rkagan@mail.ru>.
2008-06-03 Jakub Jelinek <jakub@redhat.com>
* nscd/nscd_getserv_r.c (__nscd_getservbyport_r): Pass cp
instead of portstr to nscd_getserv_r. Patch by
Roman Kagan <rkagan@mail.ru>.
* nscd/nscd_getai.c (__nscd_getai): Set errno to 0 in case we found
no entry.
* nscd/nscd_getgr.c (nscd_getgr_r): Likewise.
* nscd/nscd_gethst_r.c (nscd_gethst_r): Likewise.
* nscd/nscd_getpw_r.c (nscd_getpw_r): Likewise.
* nscd/nscd_getserv_r.c (nscd_getserv_r): Likewise.
from return value.
* nscd/nscd_helper.c: Include string.h.
(__nscd_cache_search): Remove const qualifier from return value.
On strict alignment architectures check hash entry and data head
alignment.
* nscd/nscd_getpw_r.c (nscd_getpw_r): Don't crash or fail because
mmapped data during GC cycle contains garbage. If
__nscd_drop_map_ref fails, decrement mapped->counter when returning
error or if retrying with NO_MAPPING, only __nscd_unmap if counter
dropped to 0.
* nscd/nscd_getgr_r.c (nscd_getgr_r): Likewise.
* nscd/nscd_initgroups.c (__nscd_getgrouplist): Likewise.
* nscd/nscd_gethst_r.c (nscd_gethst_r): Likewise.
* nscd/nscd_getai.c (__nscd_getai): Likewise.
* nscd/nscd_getserv_r.c (nscd_getserv_r): Likewise.
2007-01-31 Jakub Jelinek <jakub@redhat.com>
* nscd/nscd-client.h (__nscd_cache_search): Remove const qualifier
from return value.
* nscd/nscd_helper.c: Include string.h.
(__nscd_cache_search): Remove const qualifier from return value.
On strict alignment architectures check hash entry and data head
alignment.
* nscd/nscd_getpw_r.c (nscd_getpw_r): Don't crash or fail because
mmapped data during GC cycle contains garbage. If
__nscd_drop_map_ref fails, decrement mapped->counter when returning
error or if retrying with NO_MAPPING, only __nscd_unmap if counter
dropped to 0.
* nscd/nscd_getgr_r.c (nscd_getgr_r): Likewise.
* nscd/nscd_initgroups.c (__nscd_getgrouplist): Likewise.
* nscd/nscd_gethst_r.c (nscd_gethst_r): Likewise.
* nscd/nscd_getai.c (__nscd_getai): Likewise.
* nscd/nscd_getserv_r.c (nscd_getserv_r): Likewise.
