我正尝试在我的 HTC Desire 上为我的 Android 项目执行 native 代码调试。 该项目由一层薄薄的 JNI 包装器和 C++ 中的主要 block 组成，使用 ndk-build 编译。设置了可调试标志，我在 HTC Desire 上运行 2.2，并且在我的 PC 上使用 Ubuntu。
所以一个普通的 ndk-gdb --start 返回一个:
ERROR: Could not setup network redirection to gdbserver?
Maybe using --port=<port> to use a different TCP port might help?
这很奇怪。上网查了一下，发现是ndk-gdb的一个缺陷导致的错误消息错误。如果我运行 ndk-gdb -- start --verbose 我得到这个困惑的错误:
Android NDK installation path: /home/marco/dev/android-ndk
Using specific adb command: /home/marco/dev/android-sdk//platform-tools/adb
ADB version found: Android Debug Bridge version 1.0.26
Using final ADB command: '/home/marco/dev/android-sdk//platform-tools/adb'
Using auto-detected project path: .
Found package name: com.marco83.siege
ABIs targetted by application: armeabi
Device API Level: 8
Device CPU ABIs: armeabi-v7a armeabi
Compatible device ABI: armeabi
Found debuggable flag: true
Found device gdbserver: /data/data/com.marco83.siege/lib/gdbserver
Using gdb setup init: /home/marco/dev/siege_game/trunk/SiegeGameNative/libs/armeabi/gdb.setup
Using toolchain prefix: /home/marco/dev/android-ndk/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-
Using app out directory: /home/marco/dev/siege_game/trunk/SiegeGameNative/obj/local/armeabi
Found data directory: 'run-as: Package 'com.marco83.siege' has corrupt installation'
Found first launchable activity: .Main
Launching activity: com.marco83.siege/.Main
## COMMAND: /home/marco/dev/android-sdk//platform-tools/adb shell am start -n com.marco83.siege/.Main
Starting: Intent { cmp=com.marco83.siege/.Main }
Warning: Activity not started, its current task has been brought to the front
## COMMAND: /home/marco/dev/android-sdk//platform-tools/adb shell sleep 2
Found running PID: 844
Launched gdbserver succesfully.
Setup network redirection
## COMMAND: /home/marco/dev/android-sdk//platform-tools/adb forward tcp:5039 localfilesystem:run-as: Package 'com.marco83.siege' has corrupt installation/debug-socket
## COMMAND: /home/marco/dev/android-sdk//platform-tools/adb shell run-as com.marco83.siege lib/gdbserver +debug-socket --attach 844
Android Debug Bridge version 1.0.26
-d - directs command to the only connected USB device
returns an error if more than one USB device is present.
-e - directs command to the only running emulator.
returns an error if more than one emulator is running.
-s <serial number> - directs command to the USB device or emulator with
the given serial number. Overrides ANDROID_SERIAL
environment variable.
-p <product name or path> - simple product name like 'sooner', or
a relative/absolute path to a product
out directory like 'out/target/product/sooner'.
If -p is not specified, the ANDROID_PRODUCT_OUT
environment variable is used, which must
be an absolute path.
devices - list all connected devices
connect <host>[:<port>] - connect to a device via TCP/IP
Port 5555 is used by default if no port number is specified.
disconnect [<host>[:<port>]] - disconnect from a TCP/IP device.
Port 5555 is used by default if no port number is specified.
Using this ocmmand with no additional arguments
will disconnect from all connected TCP/IP devices.
device commands:
adb push <local> <remote> - copy file/dir to device
adb pull <remote> [<local>] - copy file/dir from device
adb sync [ <directory> ] - copy host->device only if changed
(-l means list but don't copy)
(see 'adb help all')
adb shell - run remote shell interactively
adb shell <command> - run remote shell command
adb emu <command> - run emulator console command
adb logcat [ <filter-spec> ] - View device log
adb forward <local> <remote> - forward socket connections
forward specs are one of:
tcp:<port>
localabstract:<unix domain socket name>
localreserved:<unix domain socket name>
localfilesystem:<unix domain socket name>
dev:<character device name>
jdwp:<process pid> (remote only)
adb jdwp - list PIDs of processes hosting a JDWP transport
adb install [-l] [-r] [-s] <file> - push this package file to the device and install it
('-l' means forward-lock the app)
('-r' means reinstall the app, keeping its data)
('-s' means install on SD card instead of internal storage)
adb uninstall [-k] <package> - remove this app package from the device
('-k' means keep the data and cache directories)
adb bugreport - return all information from the device
that should be included in a bug report.
adb help - show this help message
adb version - show version num
DATAOPTS:
(no option) - don't touch the data partition
-w - wipe the data partition
-d - flash the data partition
scripting:
adb wait-for-device - block until device is online
adb start-server - ensure that there is a server running
adb kill-server - kill the server if it is running
adb get-state - prints: offline | bootloader | device
adb get-serialno - prints: <serial-number>
adb status-window - continuously print device status for a specified device
adb remount - remounts the /system partition on the device read-write
adb reboot [bootloader|recovery] - reboots the device, optionally into the bootloader or recovery program
adb reboot-bootloader - reboots the device into the bootloader
adb root - restarts the adbd daemon with root permissions
adb usb - restarts the adbd daemon listening on USB
adb tcpip <port> - restarts the adbd daemon listening on TCP on the specified port
networking:
adb ppp <tty> [parameters] - Run PPP over USB.
Note: you should not automatically start a PPP connection.
<tty> refers to the tty for PPP stream. Eg. dev:/dev/omap_csmi_tty1
[parameters] - Eg. defaultroute debug dump local notty usepeerdns
adb sync notes: adb sync [ <directory> ]
<localdir> can be interpreted in several ways:
- If <directory> is not specified, both /system and /data partitions will be updated.
- If it is "system" or "data", only the corresponding partition
is updated.
environmental variables:
ADB_TRACE - Print debug information. A comma separated list of the following values
1 or all, adb, sockets, packets, rwx, usb, sync, sysdeps, transport, jdwp
ANDROID_SERIAL - The serial number to connect to. -s takes priority over this if given.
ANDROID_LOG_TAGS - When used with the logcat option, only these debug tags are printed.
ERROR: Could not setup network redirection to gdbserver?
Maybe using --port=<port> to use a different TCP port might help?
marco@pacer:~/dev/siege_game/trunk/SiegeGameNative$ run-as: Package 'com.marco83.siege' has corrupt installation
正如您在此处看到的和报告的那样:http://vilimpoc.org/blog/2010/09/23/hello-gdbserver-a-debuggable-jni-example-for-android/由不同的同时输出混合引起；真正的错误应该是
Package 'xxxxx' has corrupt installation
对此错误的进一步调查指出:http://osdir.com/ml/android-ndk/2010-08/msg00263.html
报告了相同的错误，他们说无法在 Desire 上进行 native 调试。问题是 run-as 无法访问/data 文件夹。
除了 root/刷机之外还有什么解决办法吗？为什么 run-as 访问/data？
我在考虑一个天真的解决方案，我将包(objs、libs 等)复制到一个更容易访问的位置(比如在 SD 卡上)，然后告诉调试器访问该位置 - 这可行吗？
谢谢 马可
编辑:更新:我使用 unrevoked3 对手机进行了 root。即使我设置了 chmod 0777 data(这可能非常危险)，我也会得到同样的错误。正如帖子中第二个链接所报告的，run-as 正在检查/data 是否可访问。如何访问运行源代码？是否可以重新编译它并上传一个修改后的版本来绕过这个检查？ (因为我可以将/data 设置为任何人都可以读取)
最佳答案
我通过更改目录“/data/data”的访问权限和所有权解决了 HTC Desire S (2.3.3) 的这个问题:
修复前:
ls -l /data
(...)
drwxrwxrwx root root 2012-03-03 19:07 data
在根模式下:
chmod 771 /data/data
chown system.system /data/data
ls -l /data
(...)
drwxrwx--x system system 2012-03-03 19:07 data
/data 目录也可能需要更改。
chmod 771 /data
chown system.system /data
关于HTC Desire : run-as flaw? 上的 Android native 调试 (ndk-gdb)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/4873124/