# Description / User-Facing Changes
Signals are no longer blocked for child processes launched from both
interactive and non-interactive mode. The only exception is that
`SIGTSTP`, `SIGTTIN`, and `SIGTTOU` remain blocked for child processes
launched only from **interactive** mode. This is to help prevent nushell
from getting into an unrecoverable state, since we don't support
background jobs. Anyways, this fully fixes#9026.
# Other Notes
- Needs Rust version `>= 1.66` for a fix in
`std::process::Command::spawn`, but it looks our current Rust version is
way above this.
- Uses `sigaction` instead of `signal`, since the behavior of `signal`
can apparently differ across systems. Also, the `sigaction` man page
says:
> The sigaction() function supersedes the signal() function, and should
be used in preference.
Additionally, using both `sigaction` and `signal` is not recommended.
Since we were already using `sigaction` in some places (and possibly
some of our dependencies as well), this PR replaces all usages of
`signal`.
# Tests
Might want to wait for #11178 for testing.
* Revert "Revert "Try again: in unix like system, set foreground process while running external command (#6273)" (#6542)"
This reverts commit 2bb367f570.
* Make foreground job control hopefully work correctly
These changes are mostly inspired by the glibc manual.
* Fix typo in external command description
* Only restore tty control to shell when no fg procs are left; reuse pgrp
* Rework terminal acquirement code to be like fish
Co-authored-by: Darren Schroeder <343840+fdncred@users.noreply.github.com>
* Revert "Fix intermittent test crash (#6268)"
This reverts commit 555d9ee763.
* make a working version again
* try second impl
* add
* fmt
* check stdin is atty before acquire stdin
* add libc
* clean comment
* fix typo
* while executing external command, make it as foreground
* remove useless file
* add comment, make var more readable
* add comment
* fmt code
* fix windows
* fix func name
* fix clippy
* fix windows clippy
* add comments, introduce `ForegroundProcess and ForegroundChild
* fix windows clippy
* fix on windows
* no need fg_process_setup module
* Revert "no need fg_process_setup module"
This reverts commit 21ee4ffbf6.
* restrict visibility for helper functions
* Add android as target os for procfs-based ps
* Turn off code for dealing with trash on platforms which are known to not support a standard trash protocol
* Update lib.rs
* Update lib.rs
Co-authored-by: JT <547158+jntrnr@users.noreply.github.com>
