diff options
Diffstat (limited to 'nscd/initgrcache.c')
| -rw-r--r-- | nscd/initgrcache.c | 63 |
1 files changed, 46 insertions, 17 deletions
diff --git a/nscd/initgrcache.c b/nscd/initgrcache.c index b46433716b..f1f859c552 100644 --- a/nscd/initgrcache.c +++ b/nscd/initgrcache.c @@ -1,22 +1,20 @@ /* Cache handling for host lookup. - Copyright (C) 2004 Free Software Foundation, Inc. + Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2004. - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License version 2 as + published by the Free Software Foundation. - The GNU C Library is distributed in the hope that it will be useful, + This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <assert.h> #include <errno.h> @@ -26,8 +24,12 @@ #include <time.h> #include <unistd.h> #include <sys/mman.h> -#include <dbg_log.h> -#include <nscd.h> + +#include "dbg_log.h" +#include "nscd.h" +#ifdef HAVE_SENDFILE +# include <kernel-features.h> +#endif #include "../nss/nsswitch.h" @@ -105,6 +107,7 @@ addinitgroupsX (struct database_dyn *db, int fd, request_header *req, long int start = 0; bool all_tryagain = true; + bool any_success = false; /* This is temporary memory, we need not (ad must not) call mempool_alloc. */ @@ -156,6 +159,8 @@ addinitgroupsX (struct database_dyn *db, int fd, request_header *req, if (NSS_STATUS_TRYAGAIN > status || status > NSS_STATUS_RETURN) __libc_fatal ("illegal status in internal_getgrouplist"); + any_success |= status == NSS_STATUS_SUCCESS; + if (status != NSS_STATUS_SUCCESS && nss_next_action (nip, status) == NSS_ACTION_RETURN) break; @@ -169,7 +174,7 @@ addinitgroupsX (struct database_dyn *db, int fd, request_header *req, ssize_t total; ssize_t written; out: - if (start == 0) + if (!any_success) { /* Nothing found. Create a negative result record. */ written = total = sizeof (notfound); @@ -188,7 +193,8 @@ addinitgroupsX (struct database_dyn *db, int fd, request_header *req, /* We have no data. This means we send the standard reply for this case. */ if (fd != -1) - written = TEMP_FAILURE_RETRY (write (fd, ¬found, total)); + written = TEMP_FAILURE_RETRY (send (fd, ¬found, total, + MSG_NOSIGNAL)); dataset = mempool_alloc (db, sizeof (struct dataset) + req->key_len); /* If we cannot permanently store the result, so be it. */ @@ -343,7 +349,30 @@ addinitgroupsX (struct database_dyn *db, int fd, request_header *req, unnecessarily let the receiver wait. */ assert (fd != -1); - written = TEMP_FAILURE_RETRY (write (fd, &dataset->resp, total)); +#ifdef HAVE_SENDFILE + if (__builtin_expect (db->mmap_used, 1) && !alloca_used) + { + assert (db->wr_fd != -1); + assert ((char *) &dataset->resp > (char *) db->data); + assert ((char *) &dataset->resp - (char *) db->head + + total + <= (sizeof (struct database_pers_head) + + db->head->module * sizeof (ref_t) + + db->head->data_size)); + written = sendfileall (fd, db->wr_fd, + (char *) &dataset->resp + - (char *) db->head, total); +# ifndef __ASSUME_SENDFILE + if (written == -1 && errno == ENOSYS) + goto use_write; +# endif + } + else +# ifndef __ASSUME_SENDFILE + use_write: +# endif +#endif + written = writeall (fd, &dataset->resp, total); } |