/* lock.c - routines to open and apply an advisory lock to a file */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2004 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* Portions Copyright (c) 1995 Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of Michigan at Ann Arbor. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission. This software
+ * is provided ``as is'' without express or implied warranty.
+ */
#include "portable.h"
#include <ac/socket.h>
#include <ac/time.h>
#include <ac/unistd.h>
-extern int flock ();
+#ifdef HAVE_SYS_FILE_H
#include <sys/file.h>
-#include <sys/param.h>
+#endif
+
#include "slap.h"
+#include <lutil.h>
FILE *
-lock_fopen( char *fname, char *type, FILE **lfp )
+lock_fopen( const char *fname, const char *type, FILE **lfp )
{
FILE *fp;
char buf[MAXPATHLEN];
/* open the lock file */
- strcpy( buf, fname );
- strcat( buf, ".lock" );
+ snprintf( buf, sizeof buf, "%s.lock", fname );
+
if ( (*lfp = fopen( buf, "w" )) == NULL ) {
Debug( LDAP_DEBUG_ANY, "could not open \"%s\"\n", buf, 0, 0 );
+
return( NULL );
}
/* acquire the lock */
-#ifdef HAVE_FLOCK
- while ( flock( fileno( *lfp ), LOCK_EX ) != 0 ) {
-#else
- while ( lockf( fileno( *lfp ), F_LOCK, 0 ) != 0 ) {
-#endif
- ; /* NULL */
- }
+ ldap_lockf( fileno(*lfp) );
/* open the log file */
if ( (fp = fopen( fname, type )) == NULL ) {
Debug( LDAP_DEBUG_ANY, "could not open \"%s\"\n", fname, 0, 0 );
-#ifdef HAVE_FLOCK
- flock( fileno( *lfp ), LOCK_UN );
-#else
- lockf( fileno( *lfp ), F_ULOCK, 0 );
-#endif
+
+ ldap_unlockf( fileno(*lfp) );
fclose( *lfp );
*lfp = NULL;
return( NULL );
lock_fclose( FILE *fp, FILE *lfp )
{
/* unlock */
-#ifdef HAVE_FLOCK
- flock( fileno( lfp ), LOCK_UN );
-#else
- lockf( fileno( lfp ), F_ULOCK, 0 );
-#endif
+ ldap_unlockf( fileno(lfp) );
fclose( lfp );
return( fclose( fp ) );