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Shell: Don't assume that only the current shell may continue children

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That can happen because of anyone sending the process a SIGCONT.
Fixes an issue where continuing a process launched by the shell from
the System Monitor would cause the shell to spin on waitpid().
This commit is contained in:
Ali Mohammad Pur 2021-07-16 23:10:03 +04:30 committed by Ali Mohammad Pur
parent 459aa44f6b
commit 124ca30d49
Notes: sideshowbarker 2024-07-18 08:54:21 +09:00 
Author: https://github.com/alimpfard
Commit: https://github.com/SerenityOS/serenity/commit/124ca30d49e
Pull-request: https://github.com/SerenityOS/serenity/pull/8811
Reviewed-by: https://github.com/ADKaster
1 changed files with 4 additions and 3 deletions
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7
Userland/Shell/Shell.cpp
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@ -1759,10 +1759,11 @@ void Shell::notify_child_event()
}
if (child_pid == 0) {
// If the child existed, but wasn't dead.
if (job.is_suspended() && job.shell_did_continue()) {
// The job was suspended, and we sent it a SIGCONT.
if (job.is_suspended() || job.shell_did_continue()) {
// The job was suspended, and someone sent it a SIGCONT.
job.set_is_suspended(false);
job.set_shell_did_continue(false);
if (job.shell_did_continue())
job.set_shell_did_continue(false);
found_child = true;
}
continue;