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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.
This commit is contained in:
Ulrich Drepper
2011-07-11 14:50:24 -04:00
parent 23bee3e867
commit 319b9ad4bc
12 changed files with 446 additions and 159 deletions

View File

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/* Initialization in nss_files module.
Copyright (C) 2011 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 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
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. */
#include <nscd/nscd.h>
static union
{
struct traced_file file;
char buf[sizeof (struct traced_file) + sizeof ("/etc/passwd")];
} pwd_traced_file;
static union
{
struct traced_file file;
char buf[sizeof (struct traced_file) + sizeof ("/etc/group")];
} grp_traced_file;
static union
{
struct traced_file file;
char buf[sizeof (struct traced_file) + sizeof ("/etc/hosts")];
} hst_traced_file;
static union
{
struct traced_file file;
char buf[sizeof (struct traced_file) + sizeof ("/etc/resolv.conf")];
} resolv_traced_file;
static union
{
struct traced_file file;
char buf[sizeof (struct traced_file) + sizeof ("/etc/services")];
} serv_traced_file;
void
_nss_files_init (void (*cb) (size_t, struct traced_file *))
{
strcpy (pwd_traced_file.file.fname, "/etc/passwd");
cb (pwddb, &pwd_traced_file.file);
strcpy (grp_traced_file.file.fname, "/etc/group");
cb (grpdb, &grp_traced_file.file);
strcpy (hst_traced_file.file.fname, "/etc/hosts");
cb (hstdb, &hst_traced_file.file);
resolv_traced_file.file.call_res_init = 1;
strcpy (resolv_traced_file.file.fname, "/etc/resolv.conf");
cb (hstdb, &resolv_traced_file.file);
strcpy (serv_traced_file.file.fname, "/etc/services");
cb (servdb, &serv_traced_file.file);
}