X-Git-Url: https://git.llucax.com/z.facultad/75.06/emufs.git/blobdiff_plain/69c9a330bed7b04915ab1f1e7603150a7c90e0bc..8f3c412038381c67bd166c1bc3de8f808e97d6cb:/emufs/fsc.c

diff --git a/emufs/fsc.c b/emufs/fsc.c
index 562ae32..cc634c5 100644
--- a/emufs/fsc.c
+++ b/emufs/fsc.c
@@ -84,7 +84,8 @@ int emufs_fsc_agregar_gap(EMUFS *emu, EMUFS_OFFSET marker, EMUFS_FREE freespace)
 	EMUFS_FSC gap_aux,gap_before,gap_after,gap_new;
 	char name_f_fsc[255];
 	EMUFS_REG_ID pos_gap_before = 0, pos_gap_after = 0;
-	unsigned long source,destination,file_size,reg_count = 0,cant_moved = 0;
+	unsigned long source,destination,limit,file_size,reg_count = 0,cant_moved = 0;
+	char found = 0;
 		
 	strcpy(name_f_fsc,emu->nombre);
 	strcat(name_f_fsc, EMUFS_FSC_EXT);
@@ -114,13 +115,44 @@ int emufs_fsc_agregar_gap(EMUFS *emu, EMUFS_OFFSET marker, EMUFS_FREE freespace)
 		reg_count += 1;
 	}
 	
-	/* Si no encontre gaps ni por delante ni por detras */
+/* Si no encontre gaps ni por delante ni por detras */
 	if ((gap_before.marker == -1) && (gap_after.marker == -1)) {
-		/* Lo guardo en el archivo al final */
+		/* Lo guardo ordenado donde deba ir */
 		gap_new.marker = marker;
 		gap_new.freespace = freespace;
-		fseek(f_fsc,0,SEEK_END);
-		fwrite(&gap_new,sizeof(EMUFS_FSC),1,f_fsc);
+		/* Busco el gap que sucede a este */
+		fseek(f_fsc,0,SEEK_SET);
+		while (!feof(f_fsc)) {
+			fread(&gap_aux,sizeof(EMUFS_FSC),1,f_fsc);
+			if (gap_aux.marker > gap_new.marker) {
+				found = 1;
+				break;
+			}
+		}
+		if (found == 1) {
+			/* Movemos todos los gaps desde el sucesor hasta el final, una pos adelante */
+			limit = ftell(f_fsc) - sizeof(EMUFS_FSC);
+			fseek(f_fsc,0,SEEK_END);
+			reg_count = (ftell(f_fsc) - limit) / sizeof(EMUFS_FSC);			
+			source = ftell(f_fsc) - sizeof(EMUFS_FSC);
+
+			while (cant_moved < reg_count)
+			{
+				fseek(f_fsc,source,SEEK_SET);
+				fread(&gap_aux,sizeof(EMUFS_FSC),1,f_fsc);
+				fwrite(&gap_aux,sizeof(EMUFS_FSC),1,f_fsc);
+				source -= sizeof(EMUFS_FSC);
+				++cant_moved;
+			}
+			/* Agrego el nuevo registro */
+			fseek(f_fsc,limit,SEEK_SET);
+			fwrite(&gap_new,sizeof(EMUFS_FSC),1,f_fsc);
+		}
+		else {
+			fseek(f_fsc,0,SEEK_END);
+			fwrite(&gap_new,sizeof(EMUFS_FSC),1,f_fsc);
+		}
+		
 		fclose(f_fsc);		
 	}