scripts/run: Redirect QEMU stdin to /dev/null to prevent SIGTTIN

[CristianAndrei1423]

Bug that is fixed : whenever the testing scripts boots up the QEMU Virtual Machine, it is put in background. Because of that, it is not allowed to read from the terminal, so the kernel sends SIGTTIN and suspends it, making the test fail automatically.

Fix : Just redirect stdin to /dev/null so that QEMU gets EOF instead. The fix was tested with wrapper.sh on nginx.

[vTusharr]

Ah nice will incorporate this

[CristianAndrei1423]

One detail that i need to add is that QEMU vm's read from stdin only when given the -nographic flag. I specifically changed only the scripts that had this flag given.

[Copilot]

Pull request overview

This PR updates the per-app QEMU run scripts to prevent backgrounded QEMU processes from being suspended by SIGTTIN when they attempt to read from the controlling terminal, by redirecting stdin to /dev/null.

Changes:

• Redirect QEMU stdin to /dev/null across multiple .scripts/run/qemu.* scripts.
• Add line continuations (\) where needed so the stdin redirection applies to the QEMU invocation.

Reviewed changes

Copilot reviewed 25 out of 25 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
wamr/.scripts/run/qemu.x86_64	Redirects QEMU stdin to /dev/null.
sqlite/.scripts/run/qemu.x86_64	Redirects QEMU stdin to /dev/null.
sqlite/.scripts/run/qemu.arm64	Redirects QEMU stdin to /dev/null.
redis/.scripts/run/qemu.x86_64	Redirects QEMU stdin to /dev/null.
redis/.scripts/run/qemu.arm64	Attempts to redirect QEMU stdin to /dev/null (currently not correctly attached to the QEMU command).
python3-hello/.scripts/run/qemu.x86_64	Redirects QEMU stdin to /dev/null.
python3-hello/.scripts/run/qemu.arm64	Redirects QEMU stdin to /dev/null.
nginx/.scripts/run/qemu.x86_64	Redirects QEMU stdin to /dev/null.
nginx/.scripts/run/qemu.arm64	Redirects QEMU stdin to /dev/null.
elfloader-net/.scripts/run/qemu.x86_64	Redirects QEMU stdin to /dev/null.
elfloader-basic/.scripts/run/qemu.x86_64	Redirects QEMU stdin to /dev/null.
cpp-http/.scripts/run/qemu.x86_64	Redirects QEMU stdin to /dev/null.
cpp-http/.scripts/run/qemu.arm64	Redirects QEMU stdin to /dev/null.
cpp-hello/.scripts/run/qemu.x86_64	Redirects QEMU stdin to /dev/null.
cpp-hello/.scripts/run/qemu.arm64	Redirects QEMU stdin to /dev/null.
click/.scripts/run/qemu.x86_64	Redirects QEMU stdin to /dev/null.
click/.scripts/run/qemu.arm64	Redirects QEMU stdin to /dev/null.
c-http/.scripts/run/qemu.x86_64	Redirects QEMU stdin to /dev/null.
c-http/.scripts/run/qemu.arm64	Redirects QEMU stdin to /dev/null.
c-hello/.scripts/run/qemu.x86_64	Redirects QEMU stdin to /dev/null.
c-hello/.scripts/run/qemu.arm64	Redirects QEMU stdin to /dev/null.
c-fs/.scripts/run/qemu.x86_64	Redirects QEMU stdin to /dev/null.
c-fs/.scripts/run/qemu.arm64	Redirects QEMU stdin to /dev/null.
bincompat-java-hello/.scripts/run/qemu.x86_64	Redirects QEMU stdin to /dev/null.
bincompat-c-hello/.scripts/run/qemu.x86_64	Redirects QEMU stdin to /dev/null.

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