Added offset' and perm' fields.

1998-08-17  Martin Baulig  <martin@home-of-linux.org>

	* include/glibtop/procmap (glibtop_map_entry): Added `offset' and
	`perm' fields.

	* src/inodedb: New directory.
	* src/inodedb/README: New file - read it to know what this is about.

	* configure.in (--with-libgtop-inodedb): New `configure' parameter.
	* include/glibtop/inodedb.h: New file.
	* sysdeps/common/inodedb.c: New file.

src/inodedb/.cvsignore

@@ -0,0 +1,4 @@
+Makefile.in
+Makefile
+mkinodedb
+file_by_inode

src/inodedb/Makefile.am

@@ -0,0 +1,13 @@
+bin_PROGRAMS	= mkinodedb file_by_inode
+
+mkinodedb_LDADD		= $(top_builddir)/lib/libgtop.la \
+			  $(top_builddir)/sysdeps/common/libgtop_common.la \
+			  $(top_builddir)/sysdeps/@sysdeps_dir@/libgtop_sysdeps.la \
+			  @INTLLIBS@ @LIBSUPPORT@ @libs_xauth@ -lgdbm
+mkinodedb_LDFLAGS	= -static
+
+file_by_inode_LDADD	= $(top_builddir)/lib/libgtop.la \
+			  $(top_builddir)/sysdeps/common/libgtop_common.la \
+			  $(top_builddir)/sysdeps/@sysdeps_dir@/libgtop_sysdeps.la \
+			  @INTLLIBS@ @LIBSUPPORT@ @libs_xauth@ -lgdbm
+file_by_inode_LDFLAGS	= -static

src/inodedb/README

@@ -0,0 +1,73 @@
+Not all UNIXes provide an easy way to get the filename if you have
+the device it is mounted on and its inode.
+
+Well, under Linux we can simply read /proc/<pid>/maps to get the filenames
+but I don't see any way to get this under FreeBSD.
+
+In this case you can give configure the optional `--with-libgtop-inodedb'
+parameter to build this stuff here.
+
+It uses the GNU database library `gdbm' to find the inode in a database
+which is created when libgtop is installed. This should be reasonable
+fast since the entire filesystem only needs to be traversed once when
+libgtop is installed (and each time you install new software, of cause).
+
+We have two databases:
+
+* First the system administrator may place a system-wide database
+  in `$(prefix)/var/libgtop/inodedb.db' when installing libgtop.
+
+* Every user can have his/her own one in `~/var/libgtop/inodedb.db'.
+  This one has precedence over the system wide one.
+
+The `mkinodedb' program which is build in this directory takes two
+command line arguments: the full pathname of the database to be created
+and the name of a configuration file consisting of directory and file names
+each on a line by itself - see `/etc/ld.so.conf' for an example.
+
+Putting a directory name in this file means all regular files found in this
+directory are included in the database, but it will not recursively descend
+into subdirectories (for instance, we want everythink in `/usr/lib' but not
+every single file in `/usr/lib/sgml'). You can also use filenames to include
+a single file.
+
+To use this interface in your program, you first have to call
+`glibtop_inodedb_open ()':
+
+glibtop_inodedb *
+glibtop_inodedb_open (unsigned databases, unsigned long cachesize)
+
+glibtop_inodedb *
+glibtop_inodedb_open_s (glibtop *server, unsigned databases,
+			unsigned long cachesize)
+
+There are some constants defined in <glibtop/inodedb.h> for the `databases'
+parameter - you can use zero as default:
+
+#define GLIBTOP_INODEDB_SYSTEM		1
+#define GLIBTOP_INODEDB_USER		2
+#define GLIBTOP_INODEDB_CACHE		4
+
+The `cachesize' gives the size of a not yet implemented in-memory cache for
+looked up entries.
+
+This function will return a pointer of type `glibtop_inodedb *' which you need
+to lookup an entry in the database.
+
+To look up an entry, use the `glibtop_inodedb_lookup ()' function:
+
+const char *
+glibtop_inodedb_lookup (glibtop_inodedb *inodedb,
+			u_int64_t device, u_int64_t inode)
+const char *
+glibtop_inodedb_lookup_s (glibtop *server, glibtop_inodedb *inodedb,
+			  u_int64_t device, u_int64_t inode)
+
+It will either return a pointer to the filename - which you have to
+`glibtop_free ()' once done with it - or NULL on error.
+
+You can use the `file_by_inode' program in this directory to test the
+interface - just call it with two command line arguments: the device number
+and the inode number.
+
+Martin <martin@home-of-linux.org>

src/inodedb/file_by_inode.c

@@ -0,0 +1,61 @@
+/* $Id$ */
+
+/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the Gnome Top Library.
+   Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
+
+   The Gnome Top 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 Gnome Top 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <glibtop.h>
+#include <glibtop/error.h>
+#include <glibtop/inodedb.h>
+
+#include <pwd.h>
+#include <dirent.h>
+
+#include <sys/stat.h>
+
+int
+main (int argc, const char *argv [])
+{
+	glibtop_inodedb *inodedb;
+	const char *filename;
+	unsigned device, inode;
+
+	if (argc != 3) {
+		fprintf (stderr, "Usage: %s device inode\n", argv [0]);
+		exit (1);
+	}
+
+	if (sscanf (argv [1], "%d", &device) != 1) {
+		fprintf (stderr, "Usage: %s device inode\n", argv [0]);
+		exit (1);
+	}
+
+	if (sscanf (argv [2], "%d", &inode) != 1) {
+		fprintf (stderr, "Usage: %s device inode\n", argv [0]);
+		exit (1);
+	}
+
+	inodedb = glibtop_inodedb_open (0, 0);
+	if (!inodedb) exit (1);
+
+	filename = glibtop_inodedb_lookup (inodedb, device, inode);
+	if (!filename) exit (0);
+
+	fprintf (stderr, "FILENAME: %lu - %lu - '%s'\n",
+		 device, inode, filename);
+}

src/inodedb/mkinodedb.c

@@ -0,0 +1,131 @@
+/* $Id$ */
+
+/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the Gnome Top Library.
+   Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
+
+   The Gnome Top 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 Gnome Top 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <glibtop.h>
+#include <glibtop/error.h>
+#include <glibtop/inodedb.h>
+
+#include <pwd.h>
+#include <dirent.h>
+
+#include <sys/stat.h>
+
+int
+main (int argc, const char *argv [])
+{
+	GDBM_FILE dbf;
+	char dirname [BUFSIZ];
+	FILE *f;
+
+	if (argc != 3) {
+		fprintf (stderr, "Usage: %s database filename\n", argv [0]);
+		exit (1);
+	}
+
+	f = fopen (argv [2], "rt");
+	if (!f)
+		glibtop_error_io ("fopen (%s)", argv [2]);
+
+	dbf = gdbm_open (argv [1], 512, GDBM_WRCREAT, 0600, 0);
+	if (!dbf)
+		glibtop_error_io ("gdbm_open (%s)", argv [1]);
+
+	while (fgets (dirname, BUFSIZ-1, f)) {
+		struct dirent *entry;
+		struct stat statb;
+		DIR *directory;
+		size_t len;
+
+		len = strlen (dirname);
+		if (!len) continue;
+
+		if (dirname [len-1] == '\n')
+			dirname [len-1] = 0;
+		
+		if (stat (dirname, &statb))
+			continue;
+
+		if (S_ISREG (statb.st_mode)) {
+			glibtop_inodedb_key key;
+			datum d_key, d_content;
+			
+			d_key.dptr = (void *) &key;
+			d_key.dsize = sizeof (key);
+
+			d_content.dptr = dirname;
+			d_content.dsize = strlen (dirname) + 1;
+			
+			key.device = (u_int64_t) statb.st_dev;
+			key.inode = (u_int64_t) statb.st_ino;
+			
+			if (gdbm_store (dbf, d_key, d_content, GDBM_REPLACE))
+				glibtop_error_io ("gdbm_store (%s)", dirname);
+
+			printf ("%-52s - %8lu - %8lu\n",
+				dirname, (unsigned long) statb.st_dev,
+				(unsigned long) statb.st_ino);
+
+			continue;
+		}
+
+		if (!S_ISDIR (statb.st_mode))
+			continue;
+
+		directory = opendir (dirname);
+		if (!directory) continue;
+
+		while (entry = readdir (directory)) {
+			glibtop_inodedb_key key;
+			char filename [BUFSIZ];
+			datum d_key, d_content;
+			
+			sprintf (filename, "%s/%s", dirname, entry->d_name);
+			
+			if (stat (filename, &statb))
+				continue;
+
+			if (!S_ISREG (statb.st_mode))
+				continue;
+
+			d_key.dptr = (void *) &key;
+			d_key.dsize = sizeof (key);
+
+			d_content.dptr = filename;
+			d_content.dsize = strlen (filename) + 1;
+			
+			key.device = (u_int64_t) statb.st_dev;
+			key.inode = (u_int64_t) statb.st_ino;
+			
+			if (gdbm_store (dbf, d_key, d_content, GDBM_REPLACE))
+				glibtop_error_io ("gdbm_store (%s)", filename);
+
+			printf ("%-52s - %8lu - %8lu\n",
+				filename, (unsigned long) statb.st_dev,
+				(unsigned long) statb.st_ino);
+		}
+		
+		closedir (directory);
+	}
+
+	gdbm_close (dbf);
+
+	fclose (f);
+}