Re: ttyplot and amd64 snapshots

Hi Matthieu,

I am but a user, not a developer. 

To test your patch, I would have to checkout the ports tree (assuming current) and apply your diff to ttyplot, compile, and test - to verify.

I assume I can try this in an openbsd vm, so I do not pollute my current system?

I think I can attempt this, I'll get back to you in a couple of days with some results.

Kind regards,
Chris

------------------------------------
Chris Lobkowicz

chris.lobkowicz@gmail.com

On Thu, Apr 23, 2026 at 12:16 AM Matthieu Herrb <matthieu@herrb.eu> wrote:

On Wed, Apr 22, 2026 at 09:15:30PM -0600, Chris Lobkowicz wrote:
> I just switched over to snapshots (from 7.8-stable) to take advantage of
> the vmd virtio updates, and then noticed that ttyplot looks to be limited
> by pledge.
>
> When I invoke "vmstat 1 | awk 'NR>2 { print 100-$(NF); fflush(); }' |
> ttyplot -t "Cpu usage" -s 100"
> I get a "waiting for data from stdinttyplot[23086]: pledge "rpath", syscall
> 5" and then Abort trap (core dump).
>
> I assume the dump may not interest you - as either I am doing something
> wrong, or I somehow need to convince pledge/unveil to allow me do my
> ttyplot invocation.
>
> I wanted to let you know, as ttyplot may not be high on the list of
> packages needing attention.
>
> Thank you for your time.
>

Thanks for the report. This is caused by the pledge tighting changes
that happenned a couple of weeks ago.

Possible fix is to postpone the pledge() call after /dev/tty has been
opened.

ok?

Index: Makefile
===================================================================
RCS file: /local/cvs/ports/sysutils/ttyplot/Makefile,v
diff -u -p -u -r1.18 Makefile
--- Makefile    15 Sep 2025 10:58:51 -0000      1.18
+++ Makefile    23 Apr 2026 06:12:57 -0000
@@ -3,6 +3,7 @@ COMMENT =       realtime plotting utility for
 GH_ACCOUNT =   tenox7
 GH_PROJECT =   ttyplot
 GH_TAGNAME =   1.7.4
+REVISION =     0

 CATEGORIES =   sysutils

Index: patches/patch-ttyplot_c
===================================================================
RCS file: /local/cvs/ports/sysutils/ttyplot/patches/patch-ttyplot_c,v
diff -u -p -u -r1.4 patch-ttyplot_c
--- patches/patch-ttyplot_c     15 Sep 2025 10:58:51 -0000      1.4
+++ patches/patch-ttyplot_c     23 Apr 2026 06:12:57 -0000
@@ -12,3 +12,26 @@ Index: ttyplot.c
  #define _XOPEN_SOURCE_EXTENDED
  #else
  // This is needed for musl libc
+@@ -923,10 +923,6 @@ int main(int argc, char *argv[]) {
+         exit(1);
+     }
+
+-#ifdef __OpenBSD__
+-    if (pledge("stdio tty", NULL) == -1)
+-        err(1, "pledge");
+-