diff options
Diffstat (limited to 'nss/nss_files/files-XXX.c')
| -rw-r--r-- | nss/nss_files/files-XXX.c | 60 |
1 files changed, 44 insertions, 16 deletions
diff --git a/nss/nss_files/files-XXX.c b/nss/nss_files/files-XXX.c index 404a9f9750..b6702b0366 100644 --- a/nss/nss_files/files-XXX.c +++ b/nss/nss_files/files-XXX.c @@ -1,21 +1,21 @@ /* Common code for file-based databases in nss_files module. -Copyright (C) 1996 Free Software Foundation, Inc. -This file is part of the GNU C Library. + Copyright (C) 1996 Free Software Foundation, Inc. + This file is part of the GNU C Library. -The GNU C Library is free software; you can redistribute it and/or -modify it under the terms of the GNU Library General Public License as -published by the Free Software Foundation; either version 2 of the -License, or (at your option) any later version. + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. -The GNU C Library 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 -Library General Public License for more details. + The GNU C Library 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 + Library General Public License for more details. -You should have received a copy of the GNU Library General Public -License along with the GNU C Library; see the file COPYING.LIB. If -not, write to the Free Software Foundation, Inc., 675 Mass Ave, -Cambridge, MA 02139, USA. */ + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ #include <stdio.h> #include <ctype.h> @@ -54,6 +54,8 @@ __libc_lock_define_initialized (static, lock) /* Maintenance of the shared stream open on the database file. */ static FILE *stream; +static fpos_t position; +static enum { none, getent, getby } last_use; static int keep_stream; /* Open database file if not already opened. */ @@ -90,6 +92,15 @@ CONCAT(_nss_files_set,ENTNAME) (int stayopen) status = internal_setent (stayopen); + if (status == NSS_STATUS_SUCCESS && fgetpos (stream, &position) < 0) + { + fclose (stream); + stream = NULL; + status = NSS_STATUS_UNAVAIL; + } + + last_use = getent; + __libc_lock_unlock (lock); return status; @@ -182,11 +193,25 @@ CONCAT(_nss_files_get,ENTNAME_r) (struct STRUCTURE *result, char *buffer, int buflen H_ERRNO_PROTO) { /* Return next entry in host file. */ - int status; + int status = NSS_STATUS_SUCCESS; __libc_lock_lock (lock); - status = internal_getent (result, buffer, buflen H_ERRNO_ARG); + /* If the last use was not by the getent function we need the + position the stream. */ + if (last_use != getent) + if (fsetpos (stream, &position) < 0) + status = NSS_STATUS_UNAVAIL; + else + last_use = getent; + + if (status == NSS_STATUS_SUCCESS) + { + status = internal_getent (result, buffer, buflen H_ERRNO_ARG); + + /* Remember this position. */ + fgetpos (stream, &position); + } __libc_lock_unlock (lock); @@ -218,6 +243,9 @@ _nss_files_get##name##_r (proto, \ /* Reset file pointer to beginning or open file. */ \ internal_setent (keep_stream); \ \ + /* Tell getent function that we have repositioned the file pointer. */ \ + last_use = getby; \ + \ while ((status = internal_getent (result, buffer, buflen H_ERRNO_ARG)) \ == NSS_STATUS_SUCCESS) \ { break_if_match } \ |