1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
--[[
LuCI - Lua Configuration Interface
Copyright 2008 Steven Barth <steven@midlink.org>
Copyright 2008 Jo-Philipp Wich <xm@leipzig.freifunk.net>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
$Id$
]]--
local io = require "io"
local os = require "os"
local fs = require "luci.fs"
local util = require "luci.util"
local ltn12 = require "luci.ltn12"
local posix = require "posix"
local type, assert, error = type, assert, error
module "luci.sys.mtdow"
WRITE_IMAGE = 0
WRITE_COMBINED = 1
WRITE_EMULATED = 2
ERROR_INTERNAL = 1
ERROR_NOTFOUND = 2
ERROR_RESOURCE = 3
ERROR_NODETECT = 4
ERROR_NOTAVAIL = 5
ERROR_NOSTREAM = 6
ERROR_INVMAGIC = 7
Writer = util.class()
-- x86
EmulatedWriter = util.class(Writer)
EmulatedWriter.blocks = {
image = {
magic = "eb48",
device = "/dev/hda",
write = WRITE_EMULATED
}
}
function EmulatedWriter.write_block(self, name, imagestream, appendpattern)
if appendpattern then
os.execute("grep rootfs /proc/mtd >/dev/null || "
.. "{ echo /dev/hda2,65536,rootfs > "
.. "/sys/module/block2mtd/parameters/block2mtd }")
end
return Writer.write_block(self, name, imagestream, appendpattern)
end
-- Broadcom
CFEWriter = util.class(Writer)
CFEWriter.blocks = {
image = {
magic = {"4844", "5735"},
device = "linux",
write = WRITE_IMAGE
}
}
-- Magicbox
CommonWriter = util.class(Writer)
CommonWriter.blocks = {
image = {
device = "linux",
write = WRITE_COMBINED
}
}
-- Atheros
RedWriter = util.class(Writer)
RedWriter.blocks = {
kernel = {
device = "vmlinux.bin.l7",
write = WRITE_IMAGE
},
rootfs = {
device = "rootfs",
write = WRITE_COMBINED
}
}
-- Auto Detect
function native_writer()
local w = Writer()
-- Detect amd64 / x86
local x86 = {"x86_64", "i386", "i486", "i586", "i686"}
if util.contains(x86, posix.uname("%m")) then
return EmulatedWriter()
end
-- Detect CFE
if w:_find_mtdblock("cfe") and w:_find_mtdblock("linux") then
return CFEWriter()
end
-- Detect Redboot
if w:_find_mtdblock("RedBoot") and w:_find_mtdblock("vmlinux.bin.l7") then
return RedWriter()
end
-- Detect MagicBox
if fs.readfile("/proc/cpuinfo"):find("MagicBox") then
return CommonWriter()
end
end
Writer.MTD = "/sbin/mtd"
Writer.SAFEMTD = "/tmp/mtd"
Writer.IMAGEFIFO = "/tmp/mtdimage.fifo"
function Writer.write_block(self, name, imagestream, appendfile)
assert(self.blocks[name], ERROR_NOTFOUND)
local block = self.blocks[name]
local device = block.device
device = fs.stat(device) and device or self:_find_mtdblock(device)
assert(device, ERROR_NODETECT)
if block.magic then
imagestream = self:_check_magic(imagestream, block.magic)
end
assert(imagestream, ERROR_INVMAGIC)
if appendfile then
if block.write == WRITE_COMBINED then
return (self:_write_combined(device, imagestream, appendfile) == 0)
elseif block.write == WRITE_EMULATED then
return (self:_write_emulated(device, imagestream, appendfile) == 0)
else
error(ERROR_NOTAVAIL)
end
else
return (self:_write_memory(device, imagestream) == 0)
end
end
function Writer._check_magic(self, imagestream, magic)
magic = type(magic) == "table" and magic or {magic}
local block = imagestream()
assert(block, ERROR_NOSTREAM)
local cm = "%x%x" % {block:byte(1), block:byte(2)}
if util.contains(magic, cm) then
return ltn12.source.cat(ltn12.source.string(block), imagestream)
end
end
function Writer._find_mtdblock(self, mtdname)
local k
local prefix = "/dev/mtd"
prefix = prefix .. (fs.stat(prefix) and "/" or "")
for l in io.lines("/proc/mtd") do
local k = l:match('mtd([%%w-_]+):.*"%s"' % mtdname)
if k then return prefix..k end
end
end
function Writer._write_emulated(self, devicename, imagestream, appendfile)
local stat = (self:_write_memory(device, imagestream) == 0)
stat = stat and (self:_refresh_block("rootfs") == 0)
local squash = self:_find_mtdblock("rootfs_data")
if squash then
stat = stat and (self:_append("rootfs_data", imagestream, true) == 0)
else
stat = stat and (self:_append("rootfs", imagestream) == 0)
end
return stat
end
function Writer._write_memory(self, devicename, imagestream)
local imageproc = posix.fork()
assert(imageproc ~= -1, ERROR_RESOURCE)
if imageproc == 0 then
fs.unlink(self.IMAGEFIFO)
assert(posix.mkfifo(self.IMAGEFIFO), ERROR_RESOURCE)
local imagefifo = io.open(self.IMAGEFIFO, "w")
assert(imagefifo, ERROR_RESOURCE)
ltn12.pump.all(imagestream, ltn12.sink.file(imagefifo))
os.exit(0)
end
return os.execute(
"%s write '%s' '%s' >/dev/null 2>&1" % {
self.MTD, self.IMAGEFIFO, devicename
}
)
end
function Writer._write_combined(self, devicename, imagestream, appendfile)
local imageproc = posix.fork()
assert(imageproc ~= -1, ERROR_RESOURCE)
if imageproc == 0 then
fs.unlink(self.IMAGEFIFO)
assert(posix.mkfifo(self.IMAGEFIFO), ERROR_RESOURCE)
local imagefifo = io.open(self.IMAGEFIFO, "w")
assert(imagefifo, ERROR_RESOURCE)
ltn12.pump.all(imagestream, ltn12.sink.file(imagefifo))
os.exit(0)
end
return os.execute(
"%s -j '%s' write '%s' '%s' >/dev/null 2>&1" % {
self.MTD, appendfile, self.IMAGEFIFO, devicename
}
)
end
function Writer._refresh_block(self, devicename)
return os.execute("%s refresh '%s' >/dev/null 2>&1" % {self.MTD, devicename})
end
function Writer._append(self, devicename, appendfile, erase)
erase = erase and ("-e '%s' " % devicename) or ''
return os.execute(
"%s %s jffs2write '%s' '%s' >/dev/null 2>&1" % {
self.MTD, erase, appendfile, devicename
}
)
end
|