db 3.x support and merge of db routines

[Andreas Jaeger <aj at suse dot de>]

I've finished the db3.x support and merged the different routines from
makedb.c and db-open.c into makedb.c.  The patch includes my last
patch (Subject: "Patch for nss/makedb.c").

Andreas


2000-01-07  Andreas Jaeger  <aj@suse.de>

	Add support for Berkeley db 3.0.x and merge db support:
	* nss/nss_db/dummy-db.h (struct db30): New.
	(struct dbc30): New.
	Added DB30* flags.

	* nss/makedb.c: Move all database routines to db-open.c.
	(main): Adjust to interface changes.
        Load database early to initialize version dependend variables.

	* nss/db-open.c: Merge database routines from makedb.c.
	Define version dependend constansts as variables.
	(load_db): Check also for db 3.
	(internal_setent): Call dbopen.
	(db_cursor): New function from makedb; handles db 3 now.
	(dbopen): New function from makedb; handles db 3.
	
	* nss/nss_db/db-XXX.c: Use db_notfound since the value is
	different in different DB versions.

	* nss/nss_db/nss_db.h: Add version dependend constants as
	variables, add exportet interfaces from db-open.c.
	
	* nss/Makefile ($(objpfx)makedb): Link against db-open.


============================================================
Index: nss/Makefile
--- nss/Makefile	2000/01/03 16:57:47	1.32
+++ nss/Makefile	2000/01/07 16:49:33
@@ -72,7 +72,7 @@
 distribute		+= db-XXX.c nss_db.h dummy-db.h
 
 
-$(objpfx)makedb: $(libdl)
+$(objpfx)makedb: $(libdl) $(objpfx)db-open.o
 
 # Build static module if requested
 ifneq ($(build-static-nss),yes)
============================================================
Index: nss/makedb.c
--- nss/makedb.c	2000/01/04 17:48:13	1.3
+++ nss/makedb.c	2000/01/07 16:49:33
@@ -50,23 +50,6 @@
 /* Name of output file.  */
 static const char *output_name;
 
-/* Various definitions for the libdb handling.  */
-enum {
-  nodb,
-  db24,
-  db27
-} libdb_version;
-static int (*db_open) (const char *, int,
-		       uint32_t, int, void *, void *, void **);
-
-/* Constants which vary from version to version are actually variables
-   here.  */
-static int db_first;
-static int db_next;
-static int db_nooverwrite;
-static int db_truncate;
-
-
 /* Name and version of program.  */
 static void print_version (FILE *stream, struct argp_state *state);
 void (*argp_program_version_hook) (FILE *, struct argp_state *) = print_version;
@@ -107,7 +90,6 @@
 static int process_input (FILE *input, const char *inname, NSS_DB *output,
 			  int to_lowercase, int be_quiet);
 static int print_database (NSS_DB *db);
-static NSS_DB *dbopen (const char *fname, int oper, int mode);
 
 
 int
@@ -154,10 +136,15 @@
       output_name = argv[remaining];
     }
 
+  /* First load the shared object to initialize version dependend
+     variables.  */
+  if (load_db ())
+    error (EXIT_FAILURE, 0, gettext ("No usable database library found."));
+
   /* Special handling if we are asked to print the database.  */
   if (do_undo)
     {
-      db_file = dbopen (input_name, DB_RDONLY, 0666);
+      dbopen (input_name, db_rdonly, 0666, &db_file);
       if (db_file == NULL)
 	error (EXIT_FAILURE, 0, gettext ("cannot open database file `%s': %s"),
 	       input_name,
@@ -191,7 +178,7 @@
 
   /* Open output file.  This must not be standard output so we don't
      handle "-" and "/dev/stdout" special.  */
-  db_file = dbopen (output_name, DB_CREATE | db_truncate, mode);
+  dbopen (output_name, DB_CREATE | db_truncate, mode, &db_file);
   if (db_file == NULL)
     error (EXIT_FAILURE, errno, gettext ("cannot open output file `%s'"),
 	   output_name);
@@ -336,7 +323,7 @@
       status = output->put (output->db, NULL, &key, &val, db_nooverwrite);
       if (status != 0)
 	{
-	  if (status == DB_KEYEXIST)
+	  if (status == db_keyexist)
 	    {
 	      if (!be_quiet)
 		error_at_line (0, 0, inname, linenr,
@@ -392,186 +379,11 @@
       status = cursor->c_get (cursor->cursor, &key, &val, db_next);
     }
 
-  if (status != DB_NOTFOUND)
+  if (status != db_notfound)
     {
       error (0, status, gettext ("while reading database"));
       return EXIT_FAILURE;
     }
 
   return EXIT_SUCCESS;
-}
-
-
-static int
-load_db (void)
-{
-  static const char *libnames[] = { "libdb.so.3" };
-  int x;
-  void *handle;
-
-  for(x = 0; x < sizeof (libnames) / sizeof (libnames[0]); ++x)
-    {
-      handle = dlopen (libnames[x], RTLD_LAZY);
-      if (handle == NULL)
-	continue;
-
-      db_open = dlsym (handle, "db_open");
-      if (db_open != NULL)
-	{
-	  /* Alright, we got a library.  Now find out which version it is.  */
-	  const char *(*db_version) (int *, int *, int *);
-
-	  db_version = dlsym (handle, "db_version");
-	  if (db_version != NULL)
-	    {
-	      /* Call the function and get the information.  */
-	      int major, minor, subminor;
-
-	      DL_CALL_FCT (db_version, (&major, &minor, &subminor));
-	      if (major == 2)
-		{
-		  /* We currently cannot handle other versions than the
-		     2.x series.  */
-		  if (minor < 6 || (minor == 6 && subminor < 4))
-		    {
-		      libdb_version = db24;
-		      db_first = DB24_FIRST;
-		      db_next = DB24_NEXT;
-		      db_nooverwrite = DB24_NOOVERWRITE;
-		      db_truncate = DB24_TRUNCATE;
-		    }
-		  else
-		    {
-		      libdb_version = db27;
-		      db_first = DB27_FIRST;
-		      db_next = DB27_NEXT;
-		      db_nooverwrite = DB27_NOOVERWRITE;
-		      db_truncate = DB27_TRUNCATE;
-		    }
-		}
-	    }
-
-	  if (libdb_version != nodb)
-	    return 0;
-	}
-
-      dlclose (handle);
-    }
-
-  (void) dlerror ();
-  return 1;
-}
-
-
-static int
-db_cursor (void *db, void *txn, NSS_DBC **dbcp)
-{
-  void *ptr;
-  NSS_DBC *dbc = NULL;
-  int ret;
-
-  switch (libdb_version)
-    {
-    case db24:
-      ret = ((struct db24 *) db)->cursor (db, txn, &ptr);
-      break;
-    case db27:
-      ret = ((struct db27 *) db)->cursor (db, txn, &ptr, 0);
-      break;
-    default:
-      abort ();
-    }
-
-  if (ret == 0)
-    {
-      dbc = (NSS_DBC *) malloc (sizeof (NSS_DBC));
-      if (dbc == NULL)
-	error (EXIT_FAILURE, errno, gettext ("while reading database"));
-      dbc->cursor = ptr;
-
-      switch (libdb_version)
-	{
-	case db24:
-	  dbc->c_get =
-	    (int (*) (void *, void *, void *, uint32_t))
-	    ((struct dbc24 *) ptr)->c_get;
-	  break;
-	case db27:
-	  dbc->c_get =
-	    (int (*) (void *, void *, void *, uint32_t))
-	    ((struct dbc27 *) ptr)->c_get;
-	  break;
-	default:
-	  abort ();
-	}
-    }
-
-  *dbcp = dbc;
-
-  return ret;
-}
-
-
-static NSS_DB *
-dbopen (const char *fname, int oper, int mode)
-{
-  int err;
-  void *odb;
-  NSS_DB *db;
-
-  /* First load the shared object.  */
-  load_db ();
-
-  if (db_open == NULL)
-    return NULL;
-
-  /* Actually open the database.  */
-  err = DL_CALL_FCT (db_open, (fname, DB_BTREE, oper, mode, NULL, NULL, &odb));
-  if (err != 0)
-    {
-      errno = err;
-      return NULL;
-    }
-
-  /* Construct the object we pass up.  */
-  db = (NSS_DB *) malloc (sizeof (NSS_DB));
-  if (db != NULL)
-    {
-      db->db = odb;
-
-      /* The functions are at different positions for the different
-	 versions.  Sigh.  */
-      switch (libdb_version)
-	{
-	case db24:
-	  db->close =
-	    (int (*) (void *, uint32_t)) ((struct db24 *) odb)->close;
-	  db->fd =
-	    (int (*) (void *, int *)) ((struct db24 *) odb)->fd;
-	  db->get =
-	    (int (*) (void *, void *, void *, void *, uint32_t))
-	    ((struct db24 *) odb)->get;
-	  db->put =
-	    (int (*) (void *, void *, void *, void *, uint32_t))
-	    ((struct db24 *) odb)->put;
-	  break;
-	case db27:
-	  db->close =
-	    (int (*) (void *, uint32_t)) ((struct db27 *) odb)->close;
-	  db->fd =
-	    (int (*) (void *, int *)) ((struct db27 *) odb)->fd;
-	  db->get =
-	    (int (*) (void *, void *, void *, void *, uint32_t))
-	    ((struct db27 *) odb)->get;
-	  db->put =
-	    (int (*) (void *, void *, void *, void *, uint32_t))
-	    ((struct db27 *) odb)->put;
-	  break;
-	default:
-	  abort ();
-	}
-      db->cursor = db_cursor;
-    }
-
-  return db;
 }
============================================================
Index: nss/nss_db/db-XXX.c
--- nss/nss_db/db-XXX.c	2000/01/02 04:15:39	1.17
+++ nss/nss_db/db-XXX.c	2000/01/07 16:49:33
@@ -122,7 +122,7 @@
   err = DL_CALL_FCT (db->get, (db->db, NULL, key, &value, 0));
   if (err != 0)
     {
-      if (err == DB_NOTFOUND)
+      if (err == db_notfound)
 	{
 	  H_ERRNO_SET (HOST_NOT_FOUND);
 	  status = NSS_STATUS_NOTFOUND;
============================================================
Index: nss/nss_db/db-open.c
--- nss/nss_db/db-open.c	2000/01/04 17:48:26	1.3
+++ nss/nss_db/db-open.c	2000/01/07 16:49:34
@@ -1,5 +1,5 @@
-/* Common database open/close routines for nss_db.
-   Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+/* Common database routines for nss_db.
+   Copyright (C) 2000 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
@@ -17,10 +17,12 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#include <errno.h>
 #include <fcntl.h>
 #include <dlfcn.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <libintl.h>
 #include <bits/libc-lock.h>
 
 #include "dummy-db.h"
@@ -41,30 +43,54 @@
 enum {
   nodb,
   db24,
-  db27
+  db27,
+  db30
 } libdb_version;
 static int (*libdb_db_open) (const char *, int,
 			     uint32_t, int, void *, void *, void **);
 
+static int (*libdb_db_create) (void *, void *, uint32_t);
+
+/* Constants which vary from version to version are actually variables
+   here.  */
+int db_first;
+int db_next;
+int db_nooverwrite;
+int db_truncate;
+int db_rdonly;
+/* Variables which keep track of the error values.  */
+int db_keyexist;
+int db_notfound;
+
 /* Locks the static variables in this file.  */
 __libc_lock_define_initialized (static, lock)
 
 /* Dynamically load the database library.
-   We try libdb2.so.3, maybe others in the future.  */
-static int
+   We try currently:
+   - libdb.so.3: the name used by glibc 2.1
+   - libdb-3.0.so: the name used by db-3.0.x
+   and maybe others in the future.  */
+   
+int
 load_db (void)
 {
-  static const char *libnames[] = { "libdb.so.3" };
+  static const char *libnames[] = { "libdb.so.3", "libdb-3.0.so" };
   int x;
 
-  for(x = 0; x < sizeof (libnames) / sizeof (libnames[0]); ++x)
+  for (x = 0; x < sizeof (libnames) / sizeof (libnames[0]); ++x)
     {
       libdb_handle = dlopen (libnames[x], RTLD_LAZY);
       if (libdb_handle == NULL)
 	continue;
 
-      libdb_db_open = dlsym (libdb_handle, "db_open");
-      if (libdb_db_open != NULL)
+      /* db 3.0 has db_create instead of db_open.  */
+      libdb_db_create = dlsym (libdb_handle, "db_create");
+
+      if (libdb_db_create == NULL)
+	/* db 2.x uses db_open.  */
+	libdb_db_open = dlsym (libdb_handle, "db_open");
+
+      if (libdb_db_open != NULL || libdb_db_create != NULL)
 	{
 	  /* Alright, we got a library.  Now find out which version it is.  */
 	  const char *(*db_version) (int *, int *, int *);
@@ -76,19 +102,55 @@
 	      int major, minor, subminor;
 
 	      DL_CALL_FCT (db_version, (&major, &minor, &subminor));
-	      if (major == 2)
+	      switch (major)
 		{
-		  /* We currently cannot handle other versions than the
-		     2.x series.  */
-		  if (minor < 6 || (minor == 6 && subminor < 4))
-		    libdb_version = db24;
-		  else
-		    libdb_version = db27;
+		case 2:
+		  /* Sanity check: Do we have db_open?  */
+		  if (libdb_db_open != NULL)
+		    {
+		      if (minor < 6 || (minor == 6 && subminor < 4))
+			{
+			  libdb_version = db24;
+			  db_first = DB24_FIRST;
+			  db_next = DB24_NEXT;
+			  db_nooverwrite = DB24_NOOVERWRITE;
+			  db_truncate = DB24_TRUNCATE;
+			}
+		      else
+			{
+			  libdb_version = db27;
+			  db_first = DB27_FIRST;
+			  db_next = DB27_NEXT;
+			  db_nooverwrite = DB27_NOOVERWRITE;
+			  db_truncate = DB27_TRUNCATE;
+			}
+		      db_keyexist = DB2x_KEYEXIST;
+		      db_notfound = DB2x_NOTFOUND;
+		      db_rdonly = DB2x_RDONLY;
+		    }
+		  break;
+		case 3:
+		  /* Sanity check: Do we have db_create?  */
+		  if (libdb_db_create != NULL)
+		    {
+		      libdb_version = db30;
+		      db_first = DB30_FIRST;
+		      db_next = DB30_NEXT;
+		      db_keyexist = DB30_KEYEXIST;
+		      db_notfound = DB30_NOTFOUND;
+		      db_rdonly = DB30_RDONLY;
+		    }
+		  break;
+		default:
+		  break;
 		}
 	    }
-
 	  if (libdb_version != nodb)
 	    return 0;
+
+	  /* Clear variables.  */
+	  libdb_db_open = NULL;
+	  libdb_db_create = NULL;
 	}
 
       dlclose (libdb_handle);
@@ -98,7 +160,6 @@
   return 1;
 }
 
-
 /* Make sure we don't use the library anymore once we are shutting down.  */
 static void __attribute__ ((destructor))
 unload_db (void)
@@ -106,83 +167,206 @@
   if (libdb_handle != NULL)
     {
       libdb_db_open = NULL;
+      libdb_db_create = NULL;
       libdb_version = nodb;
       dlclose (libdb_handle);
     }
 }
 
-
 enum nss_status
 internal_setent (const char *file, NSS_DB **dbp)
 {
   enum nss_status status = NSS_STATUS_SUCCESS;
-  int err;
-  void *db;
-  int fd;
-  int result;
 
-
   if (*dbp == NULL)
     {
-      if (libdb_db_open == NULL)
+      if (libdb_db_open == NULL && libdb_db_create == NULL)
 	{
 	  __libc_lock_lock (lock);
 
-	  err = load_db ();
+	  status = load_db ();
 
 	  __libc_lock_unlock (lock);
 
-	  if (err != 0)
-	    return NSS_STATUS_UNAVAIL;
+	  if (status != 0)
+	    return status;
 	}
 
-      /* Open the database.  Fortunately this interface seems to be the
-	 same for all supported versions.  */
-      err = DL_CALL_FCT (libdb_db_open,
-			 (file, DB_BTREE, DB_RDONLY, 0, NULL, NULL, &db));
+      status = dbopen (file, db_rdonly, 0, dbp);
+    }
+
+  return status;
+}
+
+
+/* Close the database file.  */
+void
+internal_endent (NSS_DB **dbp)
+{
+  NSS_DB *db = *dbp;
+  if (db != NULL)
+    {
+      DL_CALL_FCT (db->close, (db->db, 0));
+      *dbp = NULL;
+    }
+}
+
+int
+db_cursor (void *db, void *txn, NSS_DBC **dbcp)
+{
+  void *ptr;
+  NSS_DBC *dbc = NULL;
+  int ret;
+
+  switch (libdb_version)
+    {
+    case db24:
+      ret = ((struct db24 *) db)->cursor (db, txn, &ptr);
+      break;
+    case db27:
+      ret = ((struct db27 *) db)->cursor (db, txn, &ptr, 0);
+      break;
+    case db30:
+      ret = ((struct db30 *) db)->cursor (db, txn, &ptr, 0);
+      break;
+    default:
+      abort ();
+    }
 
+  if (ret == 0)
+    {
+      dbc = (NSS_DBC *) malloc (sizeof (NSS_DBC));
+      if (dbc == NULL)
+	return 1;
+      dbc->cursor = ptr;
+
+      switch (libdb_version)
+	{
+	case db24:
+	  dbc->c_get =
+	    (int (*) (void *, void *, void *, uint32_t))
+	    ((struct dbc24 *) ptr)->c_get;
+	  break;
+	case db27:
+	  dbc->c_get =
+	    (int (*) (void *, void *, void *, uint32_t))
+	    ((struct dbc27 *) ptr)->c_get;
+	  break;
+	case db30:
+	  dbc->c_get =
+	    (int (*) (void *, void *, void *, uint32_t))
+	    ((struct dbc30 *) ptr)->c_get;
+	default:
+	  abort ();
+	}
+    }
+
+  *dbcp = dbc;
+
+  return ret;
+}
+
+
+int
+dbopen (const char *fname, int oper, int mode, NSS_DB **dbp)
+{
+  int err;
+  int result;
+  int fd;
+  void *odb;
+  enum nss_status status = NSS_STATUS_SUCCESS;
+  NSS_DB *db;
+
+  /* Actually open the database.  */
+  switch (libdb_version)
+    {
+    case db24:
+    case db27:
+      err = DL_CALL_FCT (libdb_db_open,
+			 (fname, DB_BTREE, oper, mode, NULL, NULL, &odb));
+      if (err != 0)
+	{
+	  __set_errno (err);
+	  *dbp = NULL;
+	  return err == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
+	}
+      break;
+    case db30:
+      err = DL_CALL_FCT (libdb_db_create, (&odb, NULL, 0));
       if (err != 0)
 	{
 	  __set_errno (err);
 	  *dbp = NULL;
 	  return err == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
 	}
+      err = ((struct db30 *) odb)->open (odb, fname, NULL, DB_BTREE,
+					oper, mode);
+      if (err != 0)
+	{
+	  __set_errno (err);
+	  /* Free all resources.  */
+	  ((struct db30 *) odb)->close (odb, 0);
+	  *dbp = NULL;
+	  return NSS_STATUS_UNAVAIL;
+	}
+      break;
+    default:
+      abort ();
+    }
       
-      /* Construct the object we pass up.  */
-      *dbp = (NSS_DB *) malloc (sizeof (NSS_DB));
-      if (*dbp == NULL)
-	return NSS_STATUS_UNAVAIL;
-	  
-      (*dbp)->db = db;
+  /* Construct the object we pass up.  */
+  db = (NSS_DB *) malloc (sizeof (NSS_DB));
+  if (db != NULL)
+    {
+      db->db = odb;
 
       /* The functions are at different positions for the different
 	 versions.  Sigh.  */
       switch (libdb_version)
 	{
 	case db24:
-	  (*dbp)->close =
-	    (int (*) (void *, uint32_t)) ((struct db24 *) db)->close;
-	  (*dbp)->fd =
-	    (int (*) (void *, int *)) ((struct db24 *) db)->fd;
-	  (*dbp)->get =
+	  db->close =
+	    (int (*) (void *, uint32_t)) ((struct db24 *) odb)->close;
+	  db->fd =
+	    (int (*) (void *, int *)) ((struct db24 *) odb)->fd;
+	  db->get =
 	    (int (*) (void *, void *, void *, void *, uint32_t))
-	    ((struct db24 *) db)->get;
+	    ((struct db24 *) odb)->get;
+	  db->put =
+	    (int (*) (void *, void *, void *, void *, uint32_t))
+	    ((struct db24 *) odb)->put;
 	  break;
 	case db27:
-	  (*dbp)->close =
-	    (int (*) (void *, uint32_t)) ((struct db27 *) db)->close;
-	  (*dbp)->fd =
-	    (int (*) (void *, int *)) ((struct db27 *) db)->fd;
-	  (*dbp)->get =
+	  db->close =
+	    (int (*) (void *, uint32_t)) ((struct db27 *) odb)->close;
+	  db->fd =
+	    (int (*) (void *, int *)) ((struct db27 *) odb)->fd;
+	  db->get =
+	    (int (*) (void *, void *, void *, void *, uint32_t))
+	    ((struct db27 *) odb)->get;
+	  db->put =
+	    (int (*) (void *, void *, void *, void *, uint32_t))
+	    ((struct db27 *) odb)->put;
+	  break;
+	case db30:
+	  db->close =
+	    (int (*) (void *, uint32_t)) ((struct db30 *) odb)->close;
+	  db->fd =
+	    (int (*) (void *, int *)) ((struct db30 *) odb)->fd;
+	  db->get =
+	    (int (*) (void *, void *, void *, void *, uint32_t))
+	    ((struct db30 *) odb)->get;
+	  db->put =
 	    (int (*) (void *, void *, void *, void *, uint32_t))
-	    ((struct db27 *) db)->get;
+	    ((struct db30 *) odb)->put;
 	  break;
 	default:
 	  abort ();
 	}
+      db->cursor = db_cursor;
 
       /* We have to make sure the file is `closed on exec'.  */
-      err = DL_CALL_FCT ((*dbp)->fd, (db, &fd));
+      err = DL_CALL_FCT (db->fd, (odb, &fd));
       if (err != 0)
 	{
 	  __set_errno (err);
@@ -202,25 +386,13 @@
 	{
 	  /* Something went wrong.  Close the stream and return a
 	     failure.  */
-	  DL_CALL_FCT ((*dbp)->close, (db, 0));
+	  DL_CALL_FCT (db->close, (odb, 0));
+	  free (db);
 	  status = NSS_STATUS_UNAVAIL;
-	  free (*dbp);
-	  *dbp = NULL;
+	  db = NULL;
 	}
     }
-
+  *dbp = db;
+  
   return status;
-}
-
-
-/* Close the database file.  */
-void
-internal_endent (NSS_DB **dbp)
-{
-  NSS_DB *db = *dbp;
-  if (db != NULL)
-    {
-      DL_CALL_FCT (db->close, (db->db, 0));
-      *dbp = NULL;
-    }
 }
============================================================
Index: nss/nss_db/dummy-db.h
--- nss/nss_db/dummy-db.h	2000/01/04 17:48:37	1.3
+++ nss/nss_db/dummy-db.h	2000/01/07 16:49:34
@@ -11,15 +11,19 @@
    Define only what we really need.  */
 #define DB_BTREE	(1)
 
-/* Permission flags are also not changed.  */
-#define DB_RDONLY	0x010000
+/* Permission flags.  */
+#define DB2x_RDONLY	0x010000
 
 /* Access methods.  */
 #define DB24_FIRST		0x000020
 #define DB24_NEXT		0x000800
 #define DB24_NOOVERWRITE	0x001000
 
+/* The error values that are needed.  */
+#define DB2x_KEYEXIST	( -3)
+#define DB2x_NOTFOUND	( -7)
 
+
 /* This is for the db-2.x version up to 2.x.y.  We use the name `db24' since
    this is the version which was shipped with glibc 2.1.  */
 struct db24
@@ -173,3 +177,135 @@
 #define DB27_FIRST		7
 #define DB27_NEXT		15
 #define DB27_NOOVERWRITE	17
+
+/* Versions for 3.0, incompatible with version 2.x.  */
+struct db30
+{
+  size_t pgsize;
+  void (*db_feedback) (void *, int, int);
+  void *(*db_malloc) (size_t);
+  void *(*db_realloc) (void *, size_t);
+  int (*dup_compare) (const DBT *, const DBT *);
+  void *dbenv;
+  enum { dummy30 } type;
+  void *mpf;
+  void	*mutexp;
+  u_int8_t fileid[20];
+  int32_t log_fileid;
+  void *open_txn;
+  void *saved_open_fhp;
+  struct
+  {
+    void *tqh_first;
+    void **tqh_last;
+  } free_queue;
+  struct
+  {
+    void *tqh_first;
+    void **tqh_last;
+  } active_queue;
+  void	*bt_internal;
+  void	*cj_internal;
+  void	*h_internal;
+  void	*q_internal;
+  void	*xa_internal;
+  /* Functions.  */
+  int  (*close) (void *, uint32_t);
+  int  (*cursor) (void *, void *, void **, uint32_t);
+  int  (*del) (void *, void *, DBT *, uint32_t);
+  void (*err) (void *, int, const char *, ...);
+  void (*errx) (void *, const char *, ...);
+  int  (*fd) (void *, int *);
+  int  (*get) (void *, void *, DBT *, DBT *, uint32_t);
+  int  (*get_byteswapped) (void *);
+  int (*get_type) (void *);
+  int  (*join) (void *, void **, void **, uint32_t);
+  int  (*open) (void *,	const char *, const char *, int, uint32_t, int);
+  int  (*put) (void *, void *, DBT *, DBT *, uint32_t);
+  int  (*remove) (void *, const char *, const char *, uint32_t);
+  int  (*set_cachesize) (void *, uint32_t, uint32_t, int);
+  int  (*set_dup_compare) (void *, int (*)(const DBT *, const DBT *));
+  void (*set_errcall) (void *, void (*)(const char *, char *));
+  void (*set_errfile) (void *, void *);
+  void (*set_errpfx) (void *, const char *);
+  void (*set_feedback) (void *, void (*)(void *, int, int));
+  int  (*set_flags) (void *, uint32_t);
+  int  (*set_lorder) (void *, int);
+  int  (*set_malloc) (void *, void *(*)(size_t));
+  int  (*set_pagesize) (void *, uint32_t);
+  void (*set_paniccall) (void *, void (*)(void *, int));
+  int  (*set_realloc) (void *, void *(*)(void *, size_t));
+  int  (*stat) (void *, void *, void *(*)(size_t), uint32_t);
+  int  (*sync) (void *, uint32_t);
+  int  (*upgrade) (void *, const char *, uint32_t);
+  
+  int  (*set_bt_compare) (void *, int (*)(const DBT *, const DBT *));
+  int  (*set_bt_maxkey) (void *, uint32_t);
+  int  (*set_bt_minkey) (void *, uint32_t);
+  int  (*set_bt_prefix) (void *, size_t (*)(const DBT *, const DBT *));
+  
+  int  (*set_h_ffactor) (void *, uint32_t);
+  int  (*set_h_hash) (void *, uint32_t (*)(const void *, uint32_t));
+  int  (*set_h_nelem) (void *, uint32_t);
+  
+  int  (*set_re_delim) (void *, int);
+  int  (*set_re_len) (void *, uint32_t);
+  int  (*set_re_pad) (void *, int);
+  int  (*set_re_source) (void *, const char *);
+
+  uint32_t am_ok;
+  uint32_t flags;
+};
+
+
+struct dbc30
+{
+  void *dbp;
+  void *txn;
+  struct
+  {
+    void *tqe_next;
+    void **tqe_prev;
+  } links;
+  uint32_t lid;			/* Default process' locker id. */
+  uint32_t locker;		/* Locker for this operation. */
+  DBT lock_dbt;		/* DBT referencing lock. */
+  struct
+  {
+    uint32_t pgno;
+    uint8_t fileid[20];
+  } lock;
+  struct
+  {
+    size_t off;
+    uint32_t ndx;
+    uint32_t gen;
+  } mylock;
+  DBT rkey;
+  DBT rdata;
+  int (*c_close) (void *);
+  int (*c_del) (void *, uint32_t);
+  int (*c_dup) (void *, void **, uint32_t);
+  int (*c_get) (void *, DBT *, DBT *, uint32_t);
+  int (*c_put) (void *, DBT *, DBT *, uint32_t);
+  int (*c_am_close) (void *);
+  int (*c_am_destroy) (void *);
+  void *internal;
+  uint32_t flags;
+};
+
+/* Flags which changed.  */
+#define DB30_TRUNCATE	0x020000
+
+/* Access methods.  */
+#define DB30_FIRST		9
+#define DB30_NEXT		17
+#define DB30_NOOVERWRITE	20
+
+/* Permission flags are changed.  */
+#define DB30_RDONLY	0x000010
+
+
+/* The error values that are needed.  */
+#define DB30_KEYEXIST	(-30997)
+#define DB30_NOTFOUND	(-30994)
============================================================
Index: nss/nss_db/nss_db.h
--- nss/nss_db/nss_db.h	2000/01/02 08:38:09	1.2
+++ nss/nss_db/nss_db.h	2000/01/07 16:49:34
@@ -22,10 +22,17 @@
 
 #include <stdint.h>
 
-/* The error values kept the same values though new values were added.
-   Define only those which we need.  */
-#define DB_KEYEXIST	( -3)
-#define DB_NOTFOUND	( -7)
+/* Variables which keep track of the error values.  */
+extern int db_keyexist;
+extern int db_notfound;
+
+/* Constants which vary from version to version are actually variables
+   here.  */
+extern int db_first;
+extern int db_next;
+extern int db_nooverwrite;
+extern int db_truncate;
+extern int db_rdonly;
 
 /* Flags are also unchanged.  */
 #define DB_CREATE	0x000001
@@ -69,5 +76,9 @@
 
 extern enum nss_status internal_setent (const char *file, NSS_DB **dbp);
 extern void internal_endent (NSS_DB **dbp);
+extern int db_cursor (void *db, void *txn, NSS_DBC **dbcp);
+extern int load_db (void);
+extern int dbopen (const char *fname, int oper, int mode, NSS_DB **dbp);
+
 
 #endif	/* nss_db.h */

-- 
 Andreas Jaeger
  SuSE Labs aj@suse.de
   private aj@arthur.rhein-neckar.de