116 lines
3.0 KiB
C
116 lines
3.0 KiB
C
/* $Id$ */
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/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
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This file is part of the Gnome Top Library.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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The Gnome Top Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The Gnome Top Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include <glibtop/xmalloc.h>
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#include <glibtop/inodedb.h>
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#include <pwd.h>
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#include <gdbm.h>
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#ifndef SYSTEM_INODEDB
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#define SYSTEM_INODEDB "/usr/var/libgtop/inodedb.db"
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#endif
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glibtop_inodedb *
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glibtop_inodedb_open_s (glibtop *server, unsigned databases,
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unsigned long G_GNUC_UNUSED cachesize)
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{
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glibtop_inodedb *inodedb;
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char filename [BUFSIZ];
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struct passwd *pwd;
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struct stat statb;
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if (!databases)
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databases = GLIBTOP_INODEDB_ALL;
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inodedb = glibtop_calloc_r (server, 1, sizeof (glibtop_inodedb));
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if (stat (SYSTEM_INODEDB, &statb))
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databases &= ~GLIBTOP_INODEDB_SYSTEM;
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if (databases & GLIBTOP_INODEDB_SYSTEM) {
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inodedb->system_dbf = gdbm_open
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(SYSTEM_INODEDB, 0, GDBM_READER, 0, 0);
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if (!inodedb->system_dbf)
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glibtop_error_io_r
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(server, "gdbm_open (%s)", SYSTEM_INODEDB);
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}
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pwd = getpwuid (getuid ());
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if (!pwd) glibtop_error_io_r (server, "getpwuid");
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sprintf (filename, "%s/var/libgtop/inodedb.db", pwd->pw_dir);
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if (stat (filename, &statb))
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databases &= ~GLIBTOP_INODEDB_USER;
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if (databases & GLIBTOP_INODEDB_USER) {
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inodedb->user_dbf = gdbm_open
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(filename, 0, GDBM_READER, 0, 0);
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if (!inodedb->user_dbf)
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glibtop_error_io_r
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(server, "gdbm_open (%s)", filename);
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}
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return inodedb;
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}
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const char *
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glibtop_inodedb_lookup_s (glibtop G_GNUC_UNUSED *server,
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glibtop_inodedb *inodedb,
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u_int64_t device, u_int64_t inode)
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{
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glibtop_inodedb_key key;
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datum d_key, d_content;
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d_key.dptr = (void *) &key;
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d_key.dsize = sizeof (key);
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key.device = device;
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key.inode = inode;
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if (inodedb->system_dbf) {
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d_content = gdbm_fetch (inodedb->system_dbf, d_key);
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if (d_content.dptr) return d_content.dptr;
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}
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if (inodedb->user_dbf) {
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d_content = gdbm_fetch (inodedb->user_dbf, d_key);
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if (d_content.dptr) return d_content.dptr;
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}
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return NULL;
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}
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void
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glibtop_inodedb_close_s (glibtop *server, glibtop_inodedb *inodedb)
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{
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if (inodedb->system_dbf)
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gdbm_close (inodedb->system_dbf);
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if (inodedb->user_dbf)
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gdbm_close (inodedb->user_dbf);
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glibtop_free_r (server, inodedb);
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}
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