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
|
#!/usr/bin/env python3
#
# Copyright 2018 Ettus Research, a National Instruments Company
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
"""
Embedded USRP filesystem update utility
"""
from __future__ import print_function
import os
import time
import subprocess
import argparse
import tempfile
from builtins import input
import requests
MPM_DEVICE = None # This is the default value
try:
from usrp_mpm import __mpm_device__ as MPM_DEVICE
except ImportError:
print("ERROR: Could not import MPM.")
DEFAULT_IMAGES_INSTALL_LOCATION = '/usr/share/uhd/images/'
DEFAULT_REMOTE_MANIFEST_URL =\
'https://raw.githubusercontent.com/EttusResearch/uhd/{tag}/images/manifest.txt'
DEFAULT_FS_IMAGE = {'n3xx': 'usrp_n3xx_fs.mender', 'e320': 'usrp_e320_fs.mender'}
DEFAULT_MENDER_TARGET = {
'n3xx': 'n3xx_...._mender_default',
'e320': 'e320_...._mender_default',
}
def parse_args():
""" Parse args """
parser = argparse.ArgumentParser(
description="""USRP filesystem update
If run without any options, it will reset the filesystem to the state
it was originally in, but with the same version ("factory reset").
By using -m or -t, the precise version of the new filesystem can be
selected. -t master will update to the very latest filesystem image.
Most options require access to the internet to download the latest
manifest and/or filesystem image.
""",
)
parser.add_argument(
'--image',
help="Binary image of the filesystem update. If this is given, all "
"other options are ignored. Can be a file or a URL",
)
parser.add_argument(
'-y', '--yes', action="store_true",
help="Answer questions with yes",
)
parser.add_argument(
'-m', '--manifest',
help="Manifest source. Can be a file or a URL. Overwrites -t",
)
parser.add_argument(
'-d', '--device-type', default=MPM_DEVICE, required=MPM_DEVICE is None,
help="Specify/overwrite device type " \
"(DANGER! May brick device if used incorrectly!)",
)
parser.add_argument(
'-t', '--git-tag',
help="Will try and locate the given git tag or branch and get the "
"corresponding manifest. Ignored when -m is given. Using this "
"requires internet access.",
)
return parser.parse_args()
def download_image(device_type, manifest_path=None):
"""
Run uhd_images_downloader to fetch the mender image
"""
downloader_command = [
'python3',
'/usr/bin/uhd_images_downloader',
'-t', DEFAULT_MENDER_TARGET[device_type],
'-i', DEFAULT_IMAGES_INSTALL_LOCATION,
]
if manifest_path is not None:
downloader_command = downloader_command + ['-m', manifest_path]
subprocess.check_call(downloader_command)
def prepare_manifest(manifest):
"""Create a valid local path for a manifest"""
manifest = manifest.strip()
if os.path.isfile(manifest):
return manifest
elif manifest.strip().startswith('http'):
manifest = manifest.strip()
temp_dir = tempfile.mkdtemp()
print("Downloading manifest file from {}...".format(
manifest.strip()))
req_obj = requests.get(manifest)
manifest_path = os.path.join(temp_dir, 'manifest.txt')
open(manifest_path, 'wb').write(req_obj.content)
# This will leave a stray file in /tmp but that's OK... we're blowing
# away the FS anyway
return manifest_path
def get_manifest_from_tag(git_tag):
"""Turn a git tag or branch into a URL to a valid manifest"""
manifest_url = DEFAULT_REMOTE_MANIFEST_URL.format(git_tag)
return prepare_manifest(manifest_url)
def prepare_image(device_type, args):
"""Figure out which mender image to use, and make sure it's available.
Returns the path to a valid Mender image.
"""
if args.image is not None:
print("Using image for upgrade: {}".format(args.image))
# This is the only case where we don't invoke the images downloader
return args.image
manifest_path = None
if args.manifest is not None:
print("Using manifest to download image: {}".format(args.manifest))
manifest_path = prepare_manifest(args.manifest)
elif args.git_tag:
manifest_path = get_manifest_from_tag(args.git_tag)
else:
print("Using default manifest.")
# Note: The image downloader may choose to do nothing if the requested
# image is already downloaded. It's safe to call anyway.
download_image(device_type, manifest_path)
return os.path.join(
DEFAULT_IMAGES_INSTALL_LOCATION,
DEFAULT_FS_IMAGE[device_type]
)
def apply_image(mender_image):
"""Actually run mender to inject the mender_image"""
subprocess.check_call(['mender', '-rootfs', mender_image])
def reboot():
"""
Reboot
"""
print("Will reboot now. Hit Ctrl-C before the countdown expires to cancel.")
print("Rebooting in 3...")
time.sleep(1)
print("2...")
time.sleep(1)
print("1...")
time.sleep(1)
os.system('reboot')
def run():
"""Main execution"""
args = parse_args()
mender_image = prepare_image(args.device_type, args)
if mender_image is None:
print("Error: Unable to identify filesystem image!")
return False
apply_image(mender_image)
print("Applied image. After reboot, check if everything works, and then "
"run the command '$ mender -commit' to confirm (otherwise, this "
"update will be undone.")
print("Note: Any data stored in this partition will be not accessible "
"after reboot.")
if args.yes:
reboot_now = 'y'
else:
reboot_now = input("Reboot now? [Yn] ")
if reboot_now == "" or reboot_now.lower() == 'y':
try:
reboot() # This will implicitly terminate the program, but it looks
# neater if we have the return statement here
return True
except KeyboardInterrupt:
pass
print("Skipping reboot. Your device will load the updated file system "
"on the next boot.")
return True
def main():
""" Go, go, go! """
try:
return run()
except SystemExit: # for argparse's --help
return True
except BaseException as ex:
print("Error: Unexpected exception caught!")
print(str(ex))
return False
if __name__ == '__main__':
exit(not main())
|
