+++ /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