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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* $Id$ */
/* Copyright (C) 1998-99 Martin Baulig
This file is part of LibGTop 1.0.
Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
LibGTop is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
LibGTop 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 General Public License
for more details.
You should have received a copy of the GNU General Public License
along with LibGTop; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include <glibtop.h>
#include <glibtop/error.h>
#include <glibtop/xmalloc.h>
#include <glibtop/inodedb.h>
#include <pwd.h>
#include <gdbm.h>
#ifndef SYSTEM_INODEDB
#define SYSTEM_INODEDB "/usr/var/libgtop/inodedb.db"
#endif
glibtop_inodedb *
glibtop_inodedb_open_s (glibtop *server, unsigned databases,
unsigned long cachesize)
{
glibtop_inodedb *inodedb;
char filename [BUFSIZ];
struct passwd *pwd;
struct stat statb;
if (!databases)
databases = GLIBTOP_INODEDB_ALL;
inodedb = glibtop_calloc_r (server, 1, sizeof (glibtop_inodedb));
if (stat (SYSTEM_INODEDB, &statb))
databases &= ~GLIBTOP_INODEDB_SYSTEM;
if (databases & GLIBTOP_INODEDB_SYSTEM) {
inodedb->system_dbf = gdbm_open
(SYSTEM_INODEDB, 0, GDBM_READER, 0, 0);
if (!inodedb->system_dbf)
glibtop_error_io_r
(server, "gdbm_open (%s)", SYSTEM_INODEDB);
}
pwd = getpwuid (getuid ());
if (!pwd) glibtop_error_io_r (server, "getpwuid");
sprintf (filename, "%s/var/libgtop/inodedb.db", pwd->pw_dir);
if (stat (filename, &statb))
databases &= ~GLIBTOP_INODEDB_USER;
if (databases & GLIBTOP_INODEDB_USER) {
inodedb->user_dbf = gdbm_open
(filename, 0, GDBM_READER, 0, 0);
if (!inodedb->user_dbf)
glibtop_error_io_r
(server, "gdbm_open (%s)", filename);
}
return inodedb;
}
const char *
glibtop_inodedb_lookup_s (glibtop *server,
glibtop_inodedb *inodedb,
u_int64_t device, u_int64_t inode)
{
glibtop_inodedb_key key;
datum d_key, d_content;
d_key.dptr = (void *) &key;
d_key.dsize = sizeof (key);
key.device = device;
key.inode = inode;
if (inodedb->system_dbf) {
d_content = gdbm_fetch (inodedb->system_dbf, d_key);
if (d_content.dptr) return d_content.dptr;
}
if (inodedb->user_dbf) {
d_content = gdbm_fetch (inodedb->user_dbf, d_key);
if (d_content.dptr) return d_content.dptr;
}
return NULL;
}
void
glibtop_inodedb_close_s (glibtop *server, glibtop_inodedb *inodedb)
{
if (inodedb->system_dbf)
gdbm_close (inodedb->system_dbf);
if (inodedb->user_dbf)
gdbm_close (inodedb->user_dbf);
glibtop_free_r (server, inodedb);
}
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