./mysendevent: not executable: 64-bit ELF file on Pixel7 and Samsung S20

[allesschonweg]

user@linuxlaptop ~/android-touch-record-replay $ ./record_touch_events.sh
Looking for touchscreen device...
/dev/input/event4
/dev/input/event3
Touchscreen device found! -> /dev/input/event3
SDK version: 34

Recording will START as soon as you put your finger in the touchscreen.
Press ctrl+c to STOP recording...
^C
user@linuxlaptop ~/android-touch-record-replay $ ./replay_touch_events.sh
Looking for touchscreen device...
/dev/input/event4
/dev/input/event3
Touchscreen device found! -> /dev/input/event3
---ls: /data/local/tmp/mysendevent: No such file or directory---
mysendevent: 1 file pushed. 0.4 MB/s (13608 bytes in 0.030s)
recorded_touch_events.txt: 1 file pushed. 0.1 MB/s (15059 bytes in 0.101s)
/system/bin/sh: /data/local/tmp/mysendevent: not executable: 64-bit ELF file
user@linuxlaptop ~/android-touch-record-replay $ adb shell
x1s:/ $ cd /data/local/temp
/system/bin/sh: cd: /data/local/temp: No such file or directory
2|x1s:/ $ cd /data/local/tmp
x1s:/data/local/tmp $ ls -l
total 16
-rwxrwxrwx 1 shell shell 13608 2024-05-30 15:09 mysendevent
x1s:/data/local/tmp $ ./mysendevent
/system/bin/sh: ./mysendevent: not executable: 64-bit ELF file

[sodaws]

Did you use mysendevent-arm64? If not, modify replay_touch_events.sh (line 12) to use that one.

[allesschonweg]

Ok, yes, then it works, but the script should then somehow query for the architecture and push the correct binary.
But even this way, I just end up in a denied Permission in both, a stock Pixel 7a and a rooted Android 14 device:
android-touch-record-replay $ ./replay_touch_events.sh
Looking for touchscreen device...
/dev/input/event6
/dev/input/event8
/dev/input/event0
/dev/input/event7
/dev/input/event3
Touchscreen device found! -> /dev/input/event3
---/data/local/tmp/mysendevent---
recorded_touch_events.txt: 1 file pushed.
could not open /dev/input/event3, Permission denied

[sodaws]

iirc root is required since Android 10. I've never used it with newer versions.

hmm...but I just remembered something. I think when the replay_touch_events.sh calls adb shell the command is executed with the shell user. This user probably doesn't execute stuff with root by default. Instead of using:

adb shell /data/local/tmp/mysendevent "${TOUCH_DEVICE#*-> }" /sdcard/recorded_touch_events.txt

maybe using:

adb shell su -c '/data/local/tmp/mysendevent "${TOUCH_DEVICE#*-> }" /sdcard/recorded_touch_events.txt'

will do the trick.

[finnmglas]

What worked for me was to edit the file replay_touch_events.sh, adding "-arm64" to every occurrence of the mysendevent thing, so the right binary was pushed