Problem description
I am running Termux 0.118.3 on two systems: Samsung Galaxy S6 running Android 7.0 and a Lenovo tablet running Android 11
When I try to install python on the Samung, I get the following error message:
Traceback (most recent call last):
File "/data/data/com.termux/files/usr/bin/py3compile", line 323, in <module>
main()
~~~~^^
File "/data/data/com.termux/files/usr/bin/py3compile", line 284, in main
pkg_files = tuple(dpf.from_package(options.package))
File "/data/data/com.termux/files/usr/lib/python3.13/debpython/files.py", line 85, in from_package
raise Exception("cannot get content of %s" % package_name)
Exception: cannot get content of python
Same messages also appear for python-pip.
I have tested several changes to files.py and determined that the cause of the error seems to be the line: env["LD_PRELOAD"] = "". If I remove that, the install works fine.
With the line included, the more detailed error information is:
process.returncode is -6
stderr output is: b'CANNOT LINK EXECUTABLE "/data/data/com.termux/files/usr/bin/dpkg": can\'t read file "/data/data/com.termux/files/usr/lib": Is a directory\n'
I can confirm that /data/data/com.termux/files/usr/bin/dpkg does exist and is executable from the command line.
Also that /data/data/com.termux/files/usr/lib is a directory!
I do not have the problem on the device running Android 11, only the device running Android 7.0. I have been able to install python successfully on this device in the last 1-2 months, so this appears to be a fairly recent problem.
I have tried factory resets of the phone, several fresh installs of Termux. Always the same problem on the Android 7.0 device.
This is the environment that is being passed in when the problem occurs:
{
"SHELL": "/data/data/com.termux/files/usr/bin/bash",
"HISTCONTROL": "ignoreboth",
"DPKG_ADMINDIR": "/data/data/com.termux/files/usr/var/lib/dpkg",
"PREFIX": "/data/data/com.termux/files/usr",
"DPKG_MAINTSCRIPT_PACKAGE_REFCOUNT": "1",
"TERMUX_IS_DEBUGGABLE_BUILD": "0",
"TERMUX_MAIN_PACKAGE_FORMAT": "debian",
"PWD": "/",
"LOGNAME": "u0_a220",
"LOGDIR": "/data/data/com.termux/files/usr/var/log",
"TERMUX__HOME": "/data/data/com.termux/files/home",
"TERMUX_VERSION": "0.118.3",
"TERMUX_APP__SE_INFO": "untrusted",
"DPKG_RUNNING_VERSION": "1.22.6-dirty",
"TERMUX__ROOTFS_DIR": "/data/data/com.termux/files",
"EXTERNAL_STORAGE": "/sdcard",
"TERMUX_API_VERSION": "0.53.0",
"HOME": "/data/data/com.termux/files/home",
"LANG": "en_US.UTF-8",
"DPKG_FRONTEND_LOCKED": "true",
"TERMUX_APK_RELEASE": "F_DROID",
"DPKG_FORCE": "security-mac,downgrade",
"DPKG_MAINTSCRIPT_DEBUG": "0",
"SVDIR": "/data/data/com.termux/files/usr/var/service",
"TMPDIR": "/data/data/com.termux/files/usr/tmp",
"DPKG_ROOT": "",
"SSH_CONNECTION": "192.168.68.106 63552 192.168.68.122 8022",
"TERMUX_APP_PACKAGE_MANAGER": "apt",
"ANDROID_DATA": "/data",
"TERMUX__PREFIX": "/data/data/com.termux/files/usr",
"TERMUX_APP__SE_FILE_CONTEXT": "u:object_r:app_data_file:s0:c512,c768",
"TERM": "xterm-256color",
"USER": "u0_a220",
"DPKG_MAINTSCRIPT_NAME": "postinst",
"TERMUX_APP__LEGACY_DATA_DIR": "/data/data/com.termux",
"SHLVL": "3",
"DPKG_COLORS": "always",
"ANDROID__BUILD_VERSION_SDK": "24",
"DPKG_MAINTSCRIPT_PACKAGE": "python-pip",
"ANDROID_ROOT": "/system",
"BOOTCLASSPATH": "/system/framework/core-oj.jar:/system/framework/core-libart.jar:/system/framework/conscrypt.jar:/system/framework/okhttp.jar:/system/framework/core-junit.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/telephony-common.jar:/system/framework/voip-common.jar:/system/framework/ims-common.jar:/system/framework/apache-xml.jar:/system/framework/org.apache.http.legacy.boot.jar:/system/framework/sprengine.jar:/system/framework/knoxsdk.jar:/system/framework/sec_edm.jar:/system/framework/sagearpolicymanager.jar:/system/framework/smartbondingservice.jar:/system/framework/timakeystore.jar:/system/framework/fipstimakeystore.jar:/system/framework/knoxvpnuidtag.jar:/system/framework/sec_sdp_sdk.jar:/system/framework/sec_sdp_hidden_sdk.jar:/system/framework/esecomm.jar:/system/framework/SemAudioThumbnail.jar:/system/framework/smatlib.jar:/system/framework/samsung-framework.jar",
"SSH_CLIENT": "192.168.68.106 63552 8022",
"TERMUX__SE_PROCESS_CONTEXT": "u:r:untrusted_app:s0:c512,c768",
"TERMUX_APP_PID": "11684",
"PATH": "/data/data/com.termux/files/usr/bin",
"TERMUX_APP__DATA_DIR": "/data/user/0/com.termux",
"DPKG_MAINTSCRIPT_ARCH": "all",
"SSH_TTY": "/dev/pts/1",
"OLDPWD": "/data/data/com.termux/files/home/HomeAssistant-Termux",
"_": "/data/data/com.termux/files/usr/bin/py3compile",
"LC_ALL": "C.UTF-8",
"LD_PRELOAD": "",
}Removing the LD_PRELOAD as '' solves the problem. Problem also disappears with LD_PRELOAD=/data/data/com.termux/files/usr/lib/libtermux-exec-ld-preload.so which is in the env when I type termux-info. Thus the problem seems to be having LD_PRELOAD as ''. At least on Android 7.0
It looks like some code somewhere is interpreting '' as the library to load, rather than an indication that no library should be loaded. Thus when it looks for that appended to /data/data/com.termux/files/usr/lib it is finding that directory, not a library file to load. Best I can figure out is there is something called "Android linker" that is originating the "CANNOT LINK EXECUTABLE" error. If so, it would make sense that this might not be the same code for Android 7 and Android 11.
Note: I'm having additional problems using _ssl in a udocker container, which might be a similar linking problem. It worked fine in January. Seems to have broken with the introduction of python 3.13.
The error I get when trying to create a new ssl context (inside a udocker container) is:
error: ssl.SSLError: [SSL] unknown error
File "/usr/local/lib/python3.14/ssl.py", line 438, in __new__
self = _SSLContext.__new__(cls, protocol)
ssl.SSLError: [SSL] unknown error (0xa080024) (_ssl.c:3187)
That seems consistent with their being a linking problem. It also occurs only on Android 7, not Android 11.
Update -- I experimented with wget and curl in the udocker container. They both ran, so that might mean that they are linking OK. But they did both fail due to insufficient randomnesss, so my ssl issue might not be due to linking.
Error messages from wget:
202D0C003F000000:error:1C8000BA:Provider routines:seed_get_seed:entropy source strength too weak:providers/implementations/rands/seed_src.c:203:
202D0C003F000000:error:1C8000BD:Provider routines:ossl_prov_drbg_instantiate:error retrieving entropy:providers/implementations/rands/drbg.c:444:
202D0C003F000000:error:1200006C:random number generator:rand_new_drbg:error instantiating drbg:crypto/rand/rand_lib.c:720:
202D0C003F000000:error:1C8000BA:Provider routines:seed_get_seed:entropy source strength too weak:providers/implementations/rands/seed_src.c:203:
202D0C003F000000:error:1C8000BD:Provider routines:ossl_prov_drbg_instantiate:error retrieving entropy:providers/implementations/rands/drbg.c:444:
202D0C003F000000:error:1200006C:random number generator:rand_new_drbg:error instantiating drbg:crypto/rand/rand_lib.c:720:
202D0C003F000000:error:0A080024:SSL routines:SSL_CTX_new_ex:reason(36):ssl/ssl_lib.c:4194:
ssl_client: SSL_CTX_new
wget: error getting response: Connection reset by peer
From curl:
curl: (35) Insufficient randomness
What steps will reproduce the bug?
Install python under Termux on an Android 7.0 device.
What is the expected behavior?
python should install without the error messages
System information
Termux Variables:
TERMUX_API_VERSION=0.53.0
TERMUX_APK_RELEASE=F_DROID
TERMUX_APP_PACKAGE_MANAGER=apt
TERMUX_APP_PID=11684
TERMUX_APP__DATA_DIR=/data/user/0/com.termux
TERMUX_APP__LEGACY_DATA_DIR=/data/data/com.termux
TERMUX_APP__SE_FILE_CONTEXT=u:object_r:app_data_file:s0:c512,c768
TERMUX_APP__SE_INFO=untrusted
TERMUX_IS_DEBUGGABLE_BUILD=0
TERMUX_MAIN_PACKAGE_FORMAT=debian
TERMUX_VERSION=0.118.3
TERMUX__HOME=/data/data/com.termux/files/home
TERMUX__PREFIX=/data/data/com.termux/files/usr
TERMUX__ROOTFS_DIR=/data/data/com.termux/files
TERMUX__SE_PROCESS_CONTEXT=u:r:untrusted_app:s0:c512,c768
TERMUX__USER_ID=0
Packages CPU architecture:
aarch64
Subscribed repositories:
# sources.list
deb https://mirror.mwt.me/termux/main stable main
# root-repo (sources.list.d/root.list)
deb https://mirror.mwt.me/termux/root root stable
# x11-repo (sources.list.d/x11.list)
deb https://mirror.mwt.me/termux/x11 x11 main
Updatable packages:
All packages up to date
termux-tools version:
1.45.0
Android version:
7.0
Kernel build information:
Linux localhost 3.10.61-11738507 #1 SMP PREEMPT Mon May 14 20:52:00 KST 2018 aarch64 Android
Device manufacturer:
samsung
Device model:
SM-G920V
Supported ABIs:
SUPPORTED_ABIS: arm64-v8a,armeabi-v7a,armeabi
SUPPORTED_32_BIT_ABIS: armeabi-v7a,armeabi
SUPPORTED_64_BIT_ABIS: arm64-v8a
LD Variables:
LD_LIBRARY_PATH=
LD_PRELOAD=/data/data/com.termux/files/usr/lib/libtermux-exec-ld-preload.so
Installed termux plugins:
com.termux.api
com.termux.boot
Problem description
I am running Termux 0.118.3 on two systems: Samsung Galaxy S6 running Android 7.0 and a Lenovo tablet running Android 11
When I try to install python on the Samung, I get the following error message:
Same messages also appear for
python-pip.I have tested several changes to
files.pyand determined that the cause of the error seems to be the line:env["LD_PRELOAD"] = "". If I remove that, the install works fine.With the line included, the more detailed error information is:
process.returncode is -6stderr output is:
b'CANNOT LINK EXECUTABLE "/data/data/com.termux/files/usr/bin/dpkg": can\'t read file "/data/data/com.termux/files/usr/lib": Is a directory\n'I can confirm that
/data/data/com.termux/files/usr/bin/dpkgdoes exist and is executable from the command line.Also that
/data/data/com.termux/files/usr/libis a directory!I do not have the problem on the device running Android 11, only the device running Android 7.0. I have been able to install python successfully on this device in the last 1-2 months, so this appears to be a fairly recent problem.
I have tried factory resets of the phone, several fresh installs of Termux. Always the same problem on the Android 7.0 device.
This is the environment that is being passed in when the problem occurs:
Removing the
LD_PRELOADas''solves the problem. Problem also disappears withLD_PRELOAD=/data/data/com.termux/files/usr/lib/libtermux-exec-ld-preload.sowhich is in the env when I typetermux-info. Thus the problem seems to be havingLD_PRELOAD as''. At least on Android 7.0It looks like some code somewhere is interpreting
''as the library to load, rather than an indication that no library should be loaded. Thus when it looks for that appended to/data/data/com.termux/files/usr/libit is finding that directory, not a library file to load. Best I can figure out is there is something called "Android linker" that is originating the "CANNOT LINK EXECUTABLE" error. If so, it would make sense that this might not be the same code for Android 7 and Android 11.Note: I'm having additional problems using
_sslin audockercontainer, which might be a similar linking problem. It worked fine in January. Seems to have broken with the introduction ofpython3.13.The error I get when trying to create a new
sslcontext (inside a udocker container) is:That seems consistent with their being a linking problem. It also occurs only on Android 7, not Android 11.
Update -- I experimented with
wgetandcurlin theudockercontainer. They both ran, so that might mean that they are linking OK. But they did both fail due to insufficient randomnesss, so mysslissue might not be due to linking.Error messages from
wget:From
curl:What steps will reproduce the bug?
Install
pythonunder Termux on an Android 7.0 device.What is the expected behavior?
pythonshould install without the error messagesSystem information