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glibc/nss/nss_db/db-init.c

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Generalize framework to register monitoring of files in nscd nscd can clear caches when certain files change. The list of files was hardcoded so far and worked for nss_files and nss_dns and those modules which need no monitoring. nss_db, for instance, has its own set of files to monitor. Now the NSS modules themselves can request that certain files are monitored.
2011-07-11 18:50:24 +00:00
/* Initialization in nss_db module.
Update copyright dates with scripts/update-copyrights.
2017-01-01 00:14:16 +00:00
Copyright (C) 2011-2017 Free Software Foundation, Inc.
Generalize framework to register monitoring of files in nscd nscd can clear caches when certain files change. The list of files was hardcoded so far and worked for nss_files and nss_dns and those modules which need no monitoring. nss_db, for instance, has its own set of files to monitor. Now the NSS modules themselves can request that certain files are monitored.
2011-07-11 18:50:24 +00:00
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 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.
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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
Replace FSF snail mail address with URLs.
2012-02-09 23:18:22 +00:00
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
Generalize framework to register monitoring of files in nscd nscd can clear caches when certain files change. The list of files was hardcoded so far and worked for nss_files and nss_dns and those modules which need no monitoring. nss_db, for instance, has its own set of files to monitor. Now the NSS modules themselves can request that certain files are monitored.
2011-07-11 18:50:24 +00:00
BZ#13696: Add --disable-nscd configure option.
2012-08-22 20:31:12 +00:00
#ifdef USE_NSCD
Generalize framework to register monitoring of files in nscd nscd can clear caches when certain files change. The list of files was hardcoded so far and worked for nss_files and nss_dns and those modules which need no monitoring. nss_db, for instance, has its own set of files to monitor. Now the NSS modules themselves can request that certain files are monitored.
2011-07-11 18:50:24 +00:00
#include <paths.h>
#include <nscd/nscd.h>
Add missing string.h include for strcpy calls. * nss/nss_db/db-init.c: Include string.h
2012-03-13 07:33:58 +00:00
#include <string.h>
Generalize framework to register monitoring of files in nscd nscd can clear caches when certain files change. The list of files was hardcoded so far and worked for nss_files and nss_dns and those modules which need no monitoring. nss_db, for instance, has its own set of files to monitor. Now the NSS modules themselves can request that certain files are monitored.
2011-07-11 18:50:24 +00:00
Enhance nscd's inotify support (Bug 14906). In bug 14906 the user complains that the inotify support in nscd is not sufficient when it comes to detecting changes in the configurationfiles that should be watched for the various databases. The current nscd implementation uses inotify to watch for changes in the configuration files, but adds watches only for IN_DELETE_SELF and IN_MODIFY. These watches are insufficient to cover even the most basic uses by a system administrator. For example using emacs or vim to edit a configuration file should trigger a reload but it might not if the editors use move to atomically update the file. This atomic update changes the inode and thus removes the notification on the file (as inotify is based on inodes). Thus the inotify support in nscd for configuration files is insufficient to account for the average use cases of system administrators and users. The inotify support is significantly enhanced and described here: https://www.sourceware.org/ml/libc-alpha/2015-02/msg00504.html Tested on x86_64 with and without inotify support.
2015-03-13 13:49:24 +00:00
#define PWD_FILENAME (_PATH_VARDB "passwd.db")
define_traced_file (pwd, PWD_FILENAME);
Generalize framework to register monitoring of files in nscd nscd can clear caches when certain files change. The list of files was hardcoded so far and worked for nss_files and nss_dns and those modules which need no monitoring. nss_db, for instance, has its own set of files to monitor. Now the NSS modules themselves can request that certain files are monitored.
2011-07-11 18:50:24 +00:00
Enhance nscd's inotify support (Bug 14906). In bug 14906 the user complains that the inotify support in nscd is not sufficient when it comes to detecting changes in the configurationfiles that should be watched for the various databases. The current nscd implementation uses inotify to watch for changes in the configuration files, but adds watches only for IN_DELETE_SELF and IN_MODIFY. These watches are insufficient to cover even the most basic uses by a system administrator. For example using emacs or vim to edit a configuration file should trigger a reload but it might not if the editors use move to atomically update the file. This atomic update changes the inode and thus removes the notification on the file (as inotify is based on inodes). Thus the inotify support in nscd for configuration files is insufficient to account for the average use cases of system administrators and users. The inotify support is significantly enhanced and described here: https://www.sourceware.org/ml/libc-alpha/2015-02/msg00504.html Tested on x86_64 with and without inotify support.
2015-03-13 13:49:24 +00:00
#define GRP_FILENAME (_PATH_VARDB "group.db")
define_traced_file (grp, GRP_FILENAME);
Generalize framework to register monitoring of files in nscd nscd can clear caches when certain files change. The list of files was hardcoded so far and worked for nss_files and nss_dns and those modules which need no monitoring. nss_db, for instance, has its own set of files to monitor. Now the NSS modules themselves can request that certain files are monitored.
2011-07-11 18:50:24 +00:00
Enhance nscd's inotify support (Bug 14906). In bug 14906 the user complains that the inotify support in nscd is not sufficient when it comes to detecting changes in the configurationfiles that should be watched for the various databases. The current nscd implementation uses inotify to watch for changes in the configuration files, but adds watches only for IN_DELETE_SELF and IN_MODIFY. These watches are insufficient to cover even the most basic uses by a system administrator. For example using emacs or vim to edit a configuration file should trigger a reload but it might not if the editors use move to atomically update the file. This atomic update changes the inode and thus removes the notification on the file (as inotify is based on inodes). Thus the inotify support in nscd for configuration files is insufficient to account for the average use cases of system administrators and users. The inotify support is significantly enhanced and described here: https://www.sourceware.org/ml/libc-alpha/2015-02/msg00504.html Tested on x86_64 with and without inotify support.
2015-03-13 13:49:24 +00:00
#define SERV_FILENAME (_PATH_VARDB "services.db")
define_traced_file (serv, SERV_FILENAME);
Generalize framework to register monitoring of files in nscd nscd can clear caches when certain files change. The list of files was hardcoded so far and worked for nss_files and nss_dns and those modules which need no monitoring. nss_db, for instance, has its own set of files to monitor. Now the NSS modules themselves can request that certain files are monitored.
2011-07-11 18:50:24 +00:00
void
_nss_db_init (void (*cb) (size_t, struct traced_file *))
{
Enhance nscd's inotify support (Bug 14906). In bug 14906 the user complains that the inotify support in nscd is not sufficient when it comes to detecting changes in the configurationfiles that should be watched for the various databases. The current nscd implementation uses inotify to watch for changes in the configuration files, but adds watches only for IN_DELETE_SELF and IN_MODIFY. These watches are insufficient to cover even the most basic uses by a system administrator. For example using emacs or vim to edit a configuration file should trigger a reload but it might not if the editors use move to atomically update the file. This atomic update changes the inode and thus removes the notification on the file (as inotify is based on inodes). Thus the inotify support in nscd for configuration files is insufficient to account for the average use cases of system administrators and users. The inotify support is significantly enhanced and described here: https://www.sourceware.org/ml/libc-alpha/2015-02/msg00504.html Tested on x86_64 with and without inotify support.
2015-03-13 13:49:24 +00:00
init_traced_file (&pwd_traced_file.file, PWD_FILENAME, 0);
Generalize framework to register monitoring of files in nscd nscd can clear caches when certain files change. The list of files was hardcoded so far and worked for nss_files and nss_dns and those modules which need no monitoring. nss_db, for instance, has its own set of files to monitor. Now the NSS modules themselves can request that certain files are monitored.
2011-07-11 18:50:24 +00:00
cb (pwddb, &pwd_traced_file.file);
Enhance nscd's inotify support (Bug 14906). In bug 14906 the user complains that the inotify support in nscd is not sufficient when it comes to detecting changes in the configurationfiles that should be watched for the various databases. The current nscd implementation uses inotify to watch for changes in the configuration files, but adds watches only for IN_DELETE_SELF and IN_MODIFY. These watches are insufficient to cover even the most basic uses by a system administrator. For example using emacs or vim to edit a configuration file should trigger a reload but it might not if the editors use move to atomically update the file. This atomic update changes the inode and thus removes the notification on the file (as inotify is based on inodes). Thus the inotify support in nscd for configuration files is insufficient to account for the average use cases of system administrators and users. The inotify support is significantly enhanced and described here: https://www.sourceware.org/ml/libc-alpha/2015-02/msg00504.html Tested on x86_64 with and without inotify support.
2015-03-13 13:49:24 +00:00
init_traced_file (&grp_traced_file.file, GRP_FILENAME, 0);
Generalize framework to register monitoring of files in nscd nscd can clear caches when certain files change. The list of files was hardcoded so far and worked for nss_files and nss_dns and those modules which need no monitoring. nss_db, for instance, has its own set of files to monitor. Now the NSS modules themselves can request that certain files are monitored.
2011-07-11 18:50:24 +00:00
cb (grpdb, &grp_traced_file.file);
Enhance nscd's inotify support (Bug 14906). In bug 14906 the user complains that the inotify support in nscd is not sufficient when it comes to detecting changes in the configurationfiles that should be watched for the various databases. The current nscd implementation uses inotify to watch for changes in the configuration files, but adds watches only for IN_DELETE_SELF and IN_MODIFY. These watches are insufficient to cover even the most basic uses by a system administrator. For example using emacs or vim to edit a configuration file should trigger a reload but it might not if the editors use move to atomically update the file. This atomic update changes the inode and thus removes the notification on the file (as inotify is based on inodes). Thus the inotify support in nscd for configuration files is insufficient to account for the average use cases of system administrators and users. The inotify support is significantly enhanced and described here: https://www.sourceware.org/ml/libc-alpha/2015-02/msg00504.html Tested on x86_64 with and without inotify support.
2015-03-13 13:49:24 +00:00
init_traced_file (&serv_traced_file.file, SERV_FILENAME, 0);
Generalize framework to register monitoring of files in nscd nscd can clear caches when certain files change. The list of files was hardcoded so far and worked for nss_files and nss_dns and those modules which need no monitoring. nss_db, for instance, has its own set of files to monitor. Now the NSS modules themselves can request that certain files are monitored.
2011-07-11 18:50:24 +00:00
cb (servdb, &serv_traced_file.file);
}
BZ#13696: Add --disable-nscd configure option.
2012-08-22 20:31:12 +00:00
#endif
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