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[z.facultad/75.06/emufs.git] / emufs / did.c

diff --git a/emufs/did.c b/emufs/did.c
index 0e3b79f730e3e4ec92ce789d071963cd3baea550..8492aa76e4d5d7197ae4d353e78fbb9eaa2cba98 100644 (file)
--- a/emufs/did.c
+++ b/emufs/did.c
@@ -1,13 +1,58 @@
+/* vim: set noexpandtab tabstop=4 shiftwidth=4:
+ *----------------------------------------------------------------------------
+ *                                  emufs
+ *----------------------------------------------------------------------------
+ * This file is part of emufs.
+ *
+ * emufs 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.
+ *
+ * emufs 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 emufs; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place, Suite 330, Boston, MA  02111-1307  USA
+ *----------------------------------------------------------------------------
+ * Creado:  jue abr  8 18:07:57 ART 2004
+ * Autores: Nicolás Dimov <sagardua@uolsinectis.com.ar>
+ *          Leandro Lucarella <llucare@fi.uba.ar>
+ *----------------------------------------------------------------------------
+ *
+ * $Id$
+ *
+ */
+
+/** \file
+ *
+ * Manejo de archivos de índices de registros borrados (reutilizables).
+ * 
+ * Implementación del manejo de archivos de índices de registros borrados
+ * (reutilizables).
+ *
+ */
+
 #include "did.h"
+#include <string.h>
+#include <unistd.h>
 
-int emufs_did_get_last(EMUFS *emu)
+int emufs_did_crear(EMUFS* efs)
+{
+       return emufs_crear_archivo_auxiliar(efs->nombre, EMUFS_DID_EXT);
+}
+
+EMUFS_REG_ID emufs_did_get_last(EMUFS *emu)
 {
        FILE * f_did;
        int id, offset;
        char name_f_did[255];
        
        strcpy(name_f_did, emu->nombre);
-       strcat(name_f_did, ".did");
+       strcat(name_f_did, EMUFS_DID_EXT);
        
        if ( (f_did = fopen(name_f_did,"r")) == NULL) return -1; /*ERROR*/
        fseek(f_did, 0, SEEK_END);
@@ -31,3 +76,19 @@ int emufs_did_get_last(EMUFS *emu)
        }
        return id;
 }
+
+/*agrego un elemento al archivo */
+int emufs_did_agregar(EMUFS *emu, EMUFS_REG_ID ID)
+{
+       FILE *f_did;
+       char name_f_did[255];
+       
+       strcpy(name_f_did, emu->nombre);
+       strcat(name_f_did,  EMUFS_DID_EXT);
+       
+       if ( (f_did = fopen(name_f_did,"a+")) == NULL) return -1;
+       fwrite(&ID, sizeof(int), 1, f_did);
+       fclose(f_did);
+       
+       return 0;
+}