X-Git-Url: https://git.llucax.com/z.facultad/75.06/emufs.git/blobdiff_plain/a7a781b6b1a260c882ad779a9ecdaa517d1a6846..a73a4c8cb85f03d9863db77f85adb4db42a91286:/emufs/idx.c

diff --git a/emufs/idx.c b/emufs/idx.c
index 9979070..cfb798e 100644
--- a/emufs/idx.c
+++ b/emufs/idx.c
@@ -35,6 +35,26 @@
  */
 
 #include "idx.h"
+#include <stdlib.h>
+#include <strings.h>
+
+FILE* emufs_idx_abrir(EMUFS* efs, const char* mode)
+{
+	FILE* f;
+	char* filename;
+
+	filename = (char*) malloc(sizeof(char) * (strlen(efs->nombre)
+				+ strlen(EMUFS_IDX_EXT) + 1));
+	if (filename == NULL) {
+		/* TODO Manejo de errores */
+		return NULL;
+	}
+	strcpy(filename, efs->nombre);
+	strcat(filename, EMUFS_IDX_EXT);
+	f = fopen(filename, mode);
+	free(filename);
+	return f;
+}
 
 int emufs_idx_buscar_mayor_id(EMUFS *emu)
 {
@@ -70,16 +90,17 @@ int emufs_idx_buscar_registro(EMUFS *emu, int ID)
 	strcat(name_f_idx, EMUFS_IDX_EXT);
 	
 	if ( (f_idx = fopen(name_f_idx,"r")) == NULL) return -1; /*ERROR*/
+	reg.id_reg = -1;
+	reg.block = -1;
 	while ( !feof(f_idx) ){
 		if (fread(&reg,sizeof(EMUFS_IDX),1,f_idx) != 1) continue;
 		if ( reg.id_reg == ID ){
-			fclose(f_idx);
-			return reg.block;
+			break;
 		}
 	}
 	
 	fclose(f_idx);
-	return -1; /*no existe el registro*/
+	return reg.block;
 }
 
 /* agrega un registro al final del archivo */
@@ -92,7 +113,7 @@ int emufs_idx_agregar(EMUFS *emu, int num_bloque, int ID_aux)
 	strcpy(name_f_idx,emu->nombre);
 	strcat(name_f_idx, EMUFS_IDX_EXT);
 
-	if ( (f_idx = fopen(name_f_idx,"ab+"))==NULL ) return -1;
+	if ( (f_idx = fopen(name_f_idx,"a+"))==NULL ) return -1;
 		
 	reg.block = num_bloque;
 	reg.id_reg = ID_aux;
@@ -100,3 +121,4 @@ int emufs_idx_agregar(EMUFS *emu, int num_bloque, int ID_aux)
 	fclose(f_idx);
 	return 0;
 }
+