--- /dev/null
+##
+## YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+##
+## Copyright (C) 2002-2010 Aleph One Ltd.
+## for Toby Churchill Ltd and Brightstar Engineering
+##
+## Created by Timothy Manning <timothy@yaffs.net>
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License version 2 as
+## published by the Free Software Foundation.
+##
+
+import os
+from yaffsfs import *
+import sys
+import ctypes
+
+
+dir_in_snapshot=[]
+files_in_snapshot=[]
+symlinks_in_snapshot=[]
+unknown_in_snapshot=[]
+is_mount_in_snapshot=[]
+def check_for_yaffs_errors(output):
+ if output<0:
+ ##error has happened
+ error=ctypes.c_int()
+ error=yaffs_get_error()
+ debug_message("error######################################",0)
+ debug_message(("error code", error), 0)
+ error_message=ctypes.c_char_p()
+ error_message.value=yaffs_error_to_str(error);
+ print "error message", error_message.value
+
+
+def debug_message(message, debug_level):
+ """note: that debug level 0 will always be printed unless debug_level is set to -1"""
+ """level 0 error messages"""
+ """level 1 basic tasks are shown(creating, deleating,ect)"""
+ """level 2 all process are shown"""
+ """level 3 shows minor tasks such as join_paths, ect"""
+ """level 4 is used for bug hunting and shows each step in detail"""
+ if current_debug_level>=debug_level:
+# for i in range(0, len(message)):
+# print message,
+# print"\n \n \n"
+ print message
+def join_paths(path1, path2):
+ new_path=path1
+ if path1[len(path1)-1]=="/"and path2[0]=="/":
+ new_path+=path2[1:]
+ elif path1[len(path1)-1]!="/"and path2[0]!="/":
+ new_path+="/"
+ new_path+=path2
+ else:
+ new_path+=path2
+
+ debug_message(("adding path ", path1, " to ", path2, " resulting path: ", new_path), 3)
+ return new_path
+
+def subtract_paths(path1, path2):
+ if len(path1)>len(path2):
+ if path1[len(path1)-1]!="/":
+ path1 +="/"
+ if path2[len(path2)-1]!="/":
+ path2 += "/"
+ debug_message("the two path1 is longer than path2 and can therefore be subtracted.", 4)
+ ##if the two paths are diretly subtractable
+ if path1[0:len (path2)-1]==path2:
+ debug_message("the two paths are direcly subtractable", 4)
+ new_path=path1[len(path2):]
+ elif path1[1:len (path2)-1]==path2:
+ debug_message("the path1 has one more charecter at the begining. assuming that the first chareter is a slash", 4)##fix this assumption.
+ new_path=path1[len(path2)+1:]
+ elif path1[1:len (path2)]==path2[1:]:
+ debug_message("the path2 has one more charecter at the begining. assuming that the first chareter is a slash", 4)##fix this assumption.
+
+ new_path=path1[len(path2)-1:]
+ else :
+ debug_message("error:could not subtract paths", 0)
+ debug_message( ("paths do not match:"+ path1+ " "+path2), 0)
+ return 0
+ else :
+ debug_message( ("cannot subtract path2(:", path2, ") from path1(", path1, ")because path 2 is too long"), 0)
+
+ return 0
+ debug_message(("subtracting paths ", path2, " from ", path1, " resulting path: ", new_path), 3)
+ return new_path
+
+def create_file(file):
+# freespace=ctypes.c_longlong
+# freespace.value=yaffs_freespace(yaffs_root_dir_path)
+# print "yaffs free space:", freespace.value
+ debug_message( "\n \n \n", 2)
+ file_path= join_paths(yaffs_root_dir_path, file["path"][len(path):])
+ debug_message( ("creating file:", file_path), 2)
+ debug_message (("mode", file["mode"]), 2)
+ debug_message("opening file",2)
+# yaffs_ls(file["path"])
+
+ ##if there is already a file in yaffs then remove the file . this is to prevent yaffs from opening and writing to a read only file
+ if yaffs_access(file_path, 0)==0:##the 0 means does it exist.
+ debug_message ("file already exists in yaffs", 2)
+ output=yaffs_unlink(file_path)
+ debug_message(("unlinking", file_path, output), 2)
+ check_for_yaffs_errors(output)
+
+ current_handle=yaffs_open(file_path, yaffs_O_CREAT | yaffs_O_TRUNC| yaffs_O_RDWR, yaffs_S_IREAD | yaffs_S_IWRITE) ##opens a file with mode set to write
+ debug_message(("current_handle", current_handle), 2)
+ data_file=open(file["path"], "r")
+ output=yaffs_lseek(current_handle, 0, 0)
+ if output==-1:
+ ##if there is no more space in the emfile then this is where it will show up.
+ freespace=ctypes.c_longlong
+ freespace.value=yaffs_freespace(yaffs_root_dir_path)
+ print "yaffs free space:", freespace.value
+
+ if freespace.value==0:
+ #print "yaffs free space:", yaffs_freespace(yaffs_root_dir_path)
+ print "yaffs is out of space exiting program"
+ #sys.exit()
+ debug_message("error with yaffs lseeking", 2)
+
+ check_for_yaffs_errors(output)
+ data_to_be_written= data_file.read()
+
+
+ length_of_file=len(data_to_be_written)
+ debug_message (("length of data to be written",length_of_file), 3)
+ output=yaffs_write(current_handle,data_to_be_written , length_of_file)
+ if output>=0:
+ debug_message(( "writing to ", file_path," ", output), 1)
+ else :
+ debug_message(( "error writing file:", output), 0)
+ check_for_yaffs_errors(output)
+ output=yaffs_ftruncate(current_handle, length_of_file)
+ if output>=0:
+ debug_message(( "truncating file:", output), 2)
+ else :
+ debug_message(( "error truncating file:", output), 0)
+ check_for_yaffs_errors(output)
+ output=yaffs_close(current_handle)
+ if output>=0:
+ debug_message(( "closing file:", output), 2)
+ else :
+ debug_message(( "error closing file:", output), 0)
+ check_for_yaffs_errors(output)
+ ##changes the mode of the yaffs file to be the same as the scanned file
+ yaffs_chmod(file_path, file["mode"]);
+ if output>=0:
+ debug_message(( "chmoding file:", output), 2)
+ else :
+ debug_message(( "error chmoding file:", output), 0)
+ check_for_yaffs_errors(output)
+
+
+
+def create_dir(dir, scanned_path, yaffs_path):
+ debug_message( "\n \n \n", 2)
+ absolute_dir_path=join_paths(yaffs_path, subtract_paths(dir["path"],scanned_path))
+ debug_message( ("creating dir:", absolute_dir_path), 2)
+ debug_message (("mode(in octal", oct(dir["mode"])), 2)
+
+ ##this is a bug in yaffs which will not make a dir if there is a slash on the end
+ if absolute_dir_path[len(absolute_dir_path)-1]=="/":
+ absolute_dir_path=absolute_dir_path[0:len(absolute_dir_path)-1]
+ debug_message (("path has slash on the end. removing slash new path is:",absolute_dir_path) , 4)
+
+
+ ##if there is already a dir in yaffs then remove the dir . this is to clean the yaffs folder if it already exists.
+ ##in yaffs all of the files in the dir to be removed must be empty.
+ ##need to create a reverse ls to delete all of the files first.
+# if yaffs_access(absolute_dir_path, 0)==0:##the 0 means does it exist.
+# debug_message ("folder already exists in yaffs", 2)
+# output=yaffs_rmdir(absolute_dir_path)
+# debug_message(("unlinking", absolute_dir_path, output), 2)
+# check_for_yaffs_errors(output)
+
+
+
+ output=yaffs_mkdir(absolute_dir_path, dir["mode"] )
+ if output>=0:
+ debug_message(( "created dir:", absolute_dir_path," ", output), 1)
+ else :
+ debug_message(( "error creating dir ", absolute_dir_path, " ", output), 0)
+ check_for_yaffs_errors(output)
+ if output==17:
+ printf("the directory already exists")
+
+
+
+
+def remove_file_from_path(path):
+ slash_id=[]
+ for i in range(0, len(path)):
+ if path[i]=="/":
+ slash_id.append(i)
+ new_path=path[:slash_id[len(slash_id)-1]]
+ debug_message( ("removed file from path", new_path), 2)
+ return new_path
+
+def is_dir_hidden(dir):
+ """this code tests if a directory is hidden (has a ./<name> format) and returns true if it is hidden"""
+ slash_id=[]
+ for i in range(0, len(dir)):
+ if dir[i]=="/":
+ slash_id.append(i)
+
+ if dir[slash_id[len(slash_id)-1]+1]==".":
+ return True
+ else :
+ return False
+
+def scan_dir(path, search_hidden_directories=True, ):
+ """this function scans all of the files and directories in a directory. The function then calls its self on any of the directories that it found. this causes it to build up a tree of all the files and directories """
+ global files_in_snapshot
+ global symlinks_in_snapshot
+ global dir_in_snapshot
+ dir_in_current_dir=[]
+ global unknown_in_snapshot
+# files_in_snapshot=[]
+# symlinks_in_snapshot=[]
+# dir_in_snapshot=[]
+# dir_in_current_dir=[]
+# unknown_in_snapshot=[]
+ if os.path.exists(path)==False:
+ debug_message ("error#############################",0)
+ debug_message (("path:", path, " doesnot exist"), 0)
+ return 0
+ dir_snapshot=os.listdir(path)
+ for i in range(0, len(dir_snapshot)):
+
+ current_snapshot=os.path.join(path, dir_snapshot[i])
+ ##debug_message (("current snapshot:", current_snapshot), 2)
+ isDir=os.path.isdir(current_snapshot)
+ isFile=os.path.isfile(current_snapshot)
+ isLink=os.path.islink(current_snapshot)
+ isMount=os.path.ismount(current_snapshot)
+
+ stat=os.lstat(current_snapshot)
+
+ ##note the order of these if and elif statemens is importaint since a file can be symbloic link and a file
+ if isDir:
+ if search_hidden_directories==True or (is_dir_hidden(current_snapshot) ==False or search_hidden_directories==True ) :
+# st_mode ##mode of the folder read/write ect
+ dir_in_snapshot.append({"path":current_snapshot, "mode":stat.st_mode})
+ dir_in_current_dir.append(current_snapshot)
+ else :
+ debug_message( ("file is hidden so it is ingored", current_snapshot,), 1)
+ elif isLink:
+
+ ##for some reason the os.readlink only gives the target link realative to the directory which the symbloic link is in. change this into a absolute path
+ x=current_snapshot
+ x=remove_file_from_path(x)
+ target=join_paths(x,os.readlink(current_snapshot) )
+ symlinks_in_snapshot.append({"path":current_snapshot, "target":target})
+ elif isFile:
+
+# stat.st_ino ##inode number
+# st_nlink ##number of hard links to this file
+# st_size ##size of file
+ files_in_snapshot.append({"path":current_snapshot, "inode": stat.st_ino, "size":stat.st_size, "num_of_hardlinks":stat.st_nlink, "mode":stat.st_mode})
+
+# elif isMount:
+# is_mount_in_snapshot.append(current_snapshot)
+ else:
+ unknown_in_snapshot.append(current_snapshot)
+
+ for i in range(0, len(dir_in_current_dir)):
+ debug_message(("scanning dir", dir_in_current_dir[i]) , 2)
+ scan_dir(dir_in_current_dir[i], search_hidden_directories)
+
+# #debug_message(("data 0", data[0][0]), 2)
+# if len(files)
+# files_in_snapshot.append(data[0][0])
+# dir_in_snapshot.append(data[1][0])
+# symlinks_in_snapshot.append(data[2][0])
+# unknown_in_snapshot.append(data[3][0])
+ return (files_in_snapshot, dir_in_snapshot, symlinks_in_snapshot, unknown_in_snapshot)
+##
+##def print_scanned_dir_list():
+## global files_in_snapshot
+## global symlinks_in_snapshot
+## print( "scanning dir", 2)
+##
+##
+## for i in range(0, len(files_in_snapshot)):
+## if files_in_snapshot[i]["num_of_hardlinks"]>1:
+## print "inode",files_in_snapshot[i]["inode"],"size",files_in_snapshot[i]["size"],"path:", files_in_snapshot[i]["path"], " num of hard links", files_in_snapshot[i]["num_of_hardlinks"]
+##
+## else :
+## print "inode",files_in_snapshot[i]["inode"],"size",files_in_snapshot[i]["size"],"path:", files_in_snapshot[i]["path"]
+### current_open_file=open(files_in_snapshot[i], "r")
+### #current_open_file.f.read(3)
+### lines_in_file=current_open_file.readlines()
+### #use for loop to write code into yaffs file
+### print "number of line of code:", len(lines_in_file)
+### print current_open_file
+## for i in range(0, len(symlinks_in_snapshot)):
+## print "symlinks in snapshot:", symlinks_in_snapshot[i]
+## for i in range(0, len(dir_in_snapshot)):
+## print "directories in snapshot:", dir_in_snapshot[i]
+## for i in range(0, len(unknown_in_snapshot)):
+## print "unknown objects in snapshot:", unknown_in_snapshot[i]
+##
+
+
+def copy_scanned_files_into_yaffs(files_in_snapshot, dir_in_snapshot, symlinks_in_snapshot, unknown_in_snapshot, path, yaffs_root_dir_path="/yaffs2/", yaffs_mount_point_path="/yaffs2/" ):
+#files_in_snapshot, dir_in_snapshot, symlinks_in_snapshot, unknown_in_snapshot
+#########################################copy directories into yaffs so the files can be created in these directories
+ debug_message("making directories in yaffs", 1)
+ if yaffs_root_dir_path!=yaffs_mount_point_path:
+ slash_id=[]
+ debug_message("making directories to the place in yaffs where the directories will copied to", 2)
+ root_branch_path=subtract_paths(yaffs_root_dir_path, yaffs_mount_point_path)
+ for i in range(0, len(root_branch_path)):
+
+ if root_branch_path[i]=="/" and i != 0:
+ slash_id.append(i)
+ debug_message(("slash_id", slash_id),4)
+ for i in range(0, len(slash_id)):
+ create_dir({"path":root_branch_path[:slash_id[i]], "mode": yaffs_S_IREAD | yaffs_S_IWRITE}, "/", yaffs_mount_point_path)
+
+ for i in range(0, len(dir_in_snapshot)):
+ create_dir(dir_in_snapshot[i], path, yaffs_root_dir_path)
+
+
+
+#########################################copy file into yaffs
+ debug_message("copying scanned files into yaffs", 1)
+ list=[]
+ inode_blacklist=[]
+
+ debug_message("files to be copyied into yaffs", 2)
+ for a in range(0, len(files_in_snapshot)):
+ debug_message(files_in_snapshot[a], 2)
+ debug_message("\n\n\n", 2)
+ for i in range(0, len(files_in_snapshot)):
+ list=[]
+ if files_in_snapshot[i]["num_of_hardlinks"]>1 and files_in_snapshot[i]["inode"] not in inode_blacklist :
+ debug_message("found a hard link", 2)
+ debug_message(("inode",files_in_snapshot[i]["inode"],"size",files_in_snapshot[i]["size"],"path:", files_in_snapshot[i]["path"], " num of hard links", files_in_snapshot[i]["num_of_hardlinks"] ), 2)
+ for a in range(0, len(files_in_snapshot) ) :
+ if files_in_snapshot[a]["inode"] ==files_in_snapshot[i]["inode"] :
+ ##and os.path.isfile(files_in_snapshot[i])
+ debug_message(("found this file which matches inode",files_in_snapshot[a]), 2)
+ list.append(files_in_snapshot[a])
+ debug_message(("length of list", len(list)), 2)
+ if len(list)==files_in_snapshot[i]["num_of_hardlinks"]:
+ break
+ for a in range(0, len(list)):
+ debug_message(list[a], 2)
+ ##add inode to blacklist. all of the indoes in the list should be the same.
+ inode_blacklist.append(list[0]["inode"])
+ ##create a file from the first hardlink.
+ create_file(list[0])
+ target_path=yaffs_root_dir_path+list[0]["path"][len(path):]
+ for i in range(1, len(list)):
+ debug_message("creating_symlink", 2)
+ debug_message(("target path", target_path), 2)
+ hardlink_path=yaffs_root_dir_path+list[i]["path"][len(path):]
+ debug_message(("hardlink path", hardlink_path), 2)
+ output=yaffs_link(target_path,hardlink_path)
+ debug_message(("creating hardlink:", list[i]["path"], "output:", output), 1)
+ elif files_in_snapshot[i]["inode"] not in inode_blacklist :
+ create_file(files_in_snapshot[i])
+
+
+############################copy symlinks into yaffs
+
+ for i in range(0, len(symlinks_in_snapshot)):
+ debug_message(("symlinks in snapshot:", symlinks_in_snapshot[i]), 2)
+ target_path=join_paths(yaffs_root_dir_path, subtract_paths(symlinks_in_snapshot[i]["target"], path))
+ new_path=join_paths(yaffs_root_dir_path, subtract_paths(symlinks_in_snapshot[i]["path"], path))
+ output=yaffs_symlink(target_path, new_path)
+ debug_message(("created symlink",new_path , " > ", target_path, " output:", output), 1)
+ ##yaffs_symlink(const YCHAR *oldpath, const YCHAR *newpath);
+
+
+ for i in range(0, len(unknown_in_snapshot)):
+ debug_message( ("unknown object in snapshot:", unknown_in_snapshot[i]), 0)
+
+
+def import_into_yaffs(file_path, yaffs_path="/yaffs2/", debug_level=1, copy_hidden_dir=True ,new_yaffs_trace_val=-1 ):
+# global current_debug_level
+# global search_hidden_directories
+# global yaffs_root_dir_path
+# global path
+
+# current_debug_level=debug_level
+# search_hidden_directories=copy_hidden_dir
+# yaffs_root_dir_path=yaffs_path
+# path=file_path
+ old_yaffs_trace_val=yaffs_get_trace()
+ if new_yaffs_trace_val!=-1:
+ yaffs_set_trace(new_yaffs_trace_val)
+
+ data=scan_dir(file_path, copy_hidden_dir)
+ copy_scanned_files_into_yaffs(data[0], data[1], data[2], data[3],file_path, yaffs_path)
+
+ yaffs_set_trace(old_yaffs_trace_val)
+
+
+if __name__=="__main__":
+ yaffs_start_up()
+ yaffs_mount("/yaffs2/")
+ #yaffs_set_trace(0)
+# absolute_path = os.path.abspath(os.path.curdir)
+ #print "absolute path:", absolute_path
+ current_debug_level=1
+ search_hidden_directories=True
+ yaffs_root_dir_path="/yaffs2/"
+ yaffs_trace=-1
+ #print sys.argv
+ path=sys.argv[1]
+ for i in range(2, len(sys.argv)):
+ if sys.argv[i]=="-d":
+ current_debug_level=int( sys.argv[i+1])
+ if sys.argv[i]=="-ignore_hidden_directories":
+ search_hidden_directories=False
+ if sys.argv[i]=="-o":
+ yaffs_root_dir_path=sys.argv[i+1]
+ if sys.argv[i]=="-yaffs_trace":
+ yaffs_trace=int(sys.argv[i+1])
+#
+#
+# path="/home/timothy/work/yaffs/git/yaffs2"
+# path="/home/timothy/my_stuff/old_laptop/timothy/programming_lejos/"
+
+
+ import_into_yaffs(path, yaffs_root_dir_path, current_debug_level, search_hidden_directories, yaffs_trace )
+# scan_dir(path)
+# copy_scanned_files_into_yaffs()
+ #print_scanned_dir_list()
+
+ print"unmounting yaffs:", yaffs_unmount("/yaffs2/")
projects / yaffs2.git / blobdiff