Ish: zsh command "ls" can not exit

[onewayticket255]

iOS 13 beta 4

iSH 1.0(53)

Update
iSH 1.0(55)
zsh works well(solve the problem in version 53)

But, zsh+oh-my-zsh:

[jasonehines]

I’m also getting this with the motd using zsh.

[rileytwo]

this is happening for me with any command i run with zsh. i can’t CTRL-C out of the command either

[stek29]

ZSH gets stuck in sigsuspend loop waiting for SIGCHLD which is never delivered to it for some reason (it stays in task->pending forever, so sigsuspend just returns, but signal is still not delivered so zsh keeps calling sigsuspend over and over).

It's broken since a8392d5316343d545e91a8a1556e60ca5dcf43a2.

[tbodt]

So what I think happened is: zsh calls sigsuspend with a mask that unblocks SIGCHLD, child exits and sends SIGCHLD, sigsuspend stops waiting and resets mask to block SIGCHLD again, and when we get to receive_signals in kernel/calls.c it does nothing because SIGCHLD is now blocked.

[stek29]

@tbodt Yeah, that seems correct.
And it was working before a8392d5316343d545e91a8a1556e60ca5dcf43a2 because sigsuspend/sigprocmask were just blocking wrong signals.

[tbodt]

Fixed in master

[rileytwo]

@tbodt i’m still having this issue in build 55 (and i’m sorry).

i’m able to run (from bash) chsh -s /bin/zsh and get the zsh prompt to load, but once i type any command and press return, the prompt hangs, and acts like i ran cat -v—it just shows raw characters i’m typing.

i’ve tried closing the app, and once i start it again, i’m greeted with the usual:

Welcome to Alpine!                                     

You can install packages with: apk add <package>       

You may change this message by editing /etc/motd.

but without a prompt ☹️

[mgilan]

@livelaughriley Do you have oh-my-zsh installed? I had to delete iSH a start from scratch to get it working again. I have only clean ZSH installed at the moment, and that seems to work okay. I’ll install oh-my-zsh tomorrow.

[rileytwo]

@mgilan No, I don't. At first, it was just an oh-my-zsh issue (or at least seemed to be), but now it happens with zsh in general

[tbodt]

It works for me perfectly fine without oh-my-zsh.

[rileytwo]

@tbodt are you running iOS 13? if so, what version?

[tbodt]

yes, beta 4.

[stek29]

@livelaughriley what version of zsh do you have?

edit: looks like 3.9/main, edge/main and edge/testing all have same version of zsh, so this likely isn't the issue.

[mgilan]

I just installed oh-my-zsh, and the shell stopped responding immediately after the setup.

[rileytwo]

@stek29 i’ll be honest i’m a bit hesitant to try and install it again. i have to uninstall iSH and then reinstall it again to be able to use it; i still don’t have a prompt when i close iSH and reopen, so a full uninstall is the only way i currently know of to get myself out of that situation

[mgilan]

It’s ok if you don’t set ZSH as your default shell.

[tbodt]

Fixed in master, hopefully for real this time.