Cortex Release v1.26.46

Cortex Release v1.26.46

Added

• Copy and paste shortcuts of a hardware keyboard (#41). Ctrl+Shift+V, Ctrl+Alt+V (Termux's) and
  Shift+Insert paste; Ctrl+Shift+C and Ctrl+Insert copy the selection (without a selection they are not
  taken: the program gets the keys as before). A held key pastes once. Ctrl+V alone stays with the
  program (the shell's quoted insert, vim's block selection).

Fixed

• A Go program built for Android could not start other programs (#42). GOOS=android go build
  makes a position-independent file that asks for Android's own linker, so Cortex took it for a
  dynamic program and started it through Ubuntu's loader without the change it gives Go programs. It
  made its own system calls with Android's paths, and gh repo clone failed with "fork/exec ...git: no
  such file or directory" (the kernel looked for git's interpreter in Android's files). Such a program
  now gets the change as any Go program does, from execve() and from posix_spawn().
• micro hung at start-up (#43). micro asks for the clipboard before it draws anything and waits for
  the answer; when Cortex did not answer, it waited for as long as the call took (up to the ten seconds
  the app gives a request), more than once. termux-clipboard-get and termux-clipboard-set now give
  up after two seconds (CORTEX_API_TIMEOUT), the calls that follow fail at once for ten seconds, and
  the app itself stops waiting for the clipboard after three.
• "Permission denied" in directories that dpkg had made (#44). dpkg makes a directory with
  mode 0 and sets the mode a moment later; when that change did not take (the library reports a
  chmod that fails as done), the directory stayed at 0 and no file could be put in it. A new directory
  now keeps its owner's read, write and search rights, as it would for the root that programs see. Directories
  left at mode 0 by an earlier version are repaired with
  find /usr /var /etc /opt -xdev -type d ! -perm -u=rwx -exec chmod u+rwx {} \;.

Documentation

• The README says what pip install answers with externally-managed-environment (Ubuntu's own rule,
  PEP 668) and how to install Python packages, and that ss and /proc/net/tcp are closed to apps by
  Android.

For developers

• tests/scripts/test_go_programs.sh builds the test program for GOOS=android too and checks that
  bash and posix_spawn() start it so that it sees Ubuntu's files and starts Ubuntu's programs.
• cortex-api gives up after CORTEX_API_DEADLINE seconds (and notes the failure in the file
  CORTEX_API_DOWN names, for the ten seconds in which calls fail at once). It is done in bash itself
  (read -t): the clipboard commands start cortex-api with exec, as before, and no process waits for
  another. A first version ran timeout from the shell; on the API 35 emulator that process hung after
  vfork, so the deadline moved into cortex-api.
• tests/scripts/test_shell_scripts.sh has the clipboard commands talk to a stand-in app that does not
  answer; tests/scripts/test_hook_qemu.sh checks the mode of new directories.

Downloads

• Cortex-arm64-v8a-signed.apk: 64-bit ARM (almost all current phones)
• Cortex-armeabi-v7a-signed.apk: 32-bit ARM

How to verify a download: signing/README.md. All versions: CHANGELOG.md.