Robert Elz wrote, on 28 Jun 2021:
>
> Date:Mon, 28 Jun 2021 10:03:39 +0100
> From:"Geoff Clare via austin-group-l at The Open Group"
>
> Message-ID: <20210628090339.GA13976@localhost>
>
> | The (builtin) pwd utility got an error when it tried to write() to
> |
Date:Mon, 28 Jun 2021 10:03:39 +0100
From:"Geoff Clare via austin-group-l at The Open Group"
Message-ID: <20210628090339.GA13976@localhost>
| The (builtin) pwd utility got an error when it tried to write() to
| standard output.
But did it "encounter" the error?
2021-06-28 17:28:04 +0700, Robert Elz via austin-group-l at The Open Group:
[...]
> A more blatant case would be
>
> pwd | (exit 0)
[...]
On the zsh mailing list, where the issue was initially brought
up by Vincent, there was also the mention that EBADF error was
explicitly ignore as a
Date:Mon, 28 Jun 2021 13:26:48 +0200
From:"Joerg Schilling via austin-group-l at The Open Group"
Message-ID: <20210628112648.qkgag%sch...@schily.net>
Several messages to which to reply ... but I'll start with the
easy ones.
| It could be argued that setting up
tg...@mirbsd.org wrote, on 27 Jun 2021:
>
> Don Cragun via austin-group-l at The Open Group dixit:
>
> > • When an unrecoverable error condition is
> > encountered, the utility shall exit with a
> > non-zero exit status.
>
> Is “pwd >/dev/full” an “unrecoverable error condition”
2021-06-28 12:06:34 +0100, Geoff Clare via austin-group-l at The Open Group:
[...]
> > It has been tradition, for a very long time, for writes on stdout to
> > have errors ignored - particularly in a case like this, where because
> > of the redirection, stdout is probably buffered, and not a lot
Date:Mon, 28 Jun 2021 15:48:33 +0200
From:Vincent Lefevre
Message-ID: <20210628134833.ga46...@zira.vinc17.org>
| So, if writing to a closed fd yields unspecified behaviour, what
| does "refers to no open file" mean?
No, you misunderstood. It isn't writing to
The following issue has been SUBMITTED.
==
https://www.austingroupbugs.net/view.php?id=1486
==
Reported By:rhansen
Assigned To:
On 2021-06-28 20:01:03 +0700, Robert Elz via austin-group-l at The Open Group
wrote:
> if a utility is invoked with any of stdin/out/err closed then what happens
> is very explicitly unspecified in POSIX. My guess is that that is largely
> because if the utility then opens a file it will be
"Robert Elz via austin-group-l at The Open Group"
wrote:
> Date:Mon, 28 Jun 2021 10:03:39 +0100
> From:"Geoff Clare via austin-group-l at The Open Group"
>
> Message-ID: <20210628090339.GA13976@localhost>
>
> | The (builtin) pwd utility got an error when it
2021-06-28 20:01:03 +0700, Robert Elz:
[...]
> steph...@chazelas.org said:
> | On the zsh mailing list, where the issue was initially brought up by
> | Vincent, there was also the mention that EBADF error was explicitly
> | ignore as a special case, as some systems have or used to have
> |
On 2021-06-28 22:02:22 +, tg...@mirbsd.org via austin-group-l at The Open
Group wrote:
> What’s currently left of Vincent’s issue is that the utility tries
> to write to its stdout¹ which the shell has connected to something
> that does not accept writes: /dev/full on systems that have it, an
Stephane Chazelas via austin-group-l at The Open Group dixit:
>2021-06-28 20:01:03 +0700, Robert Elz:
>[...]
I see significant support here for my interpretation of this.
And I’d probably even be annoyed if it shows strerror(EPIPE)…
But…
>> | so users were using >&- instead to silence
On 2021-06-28 21:28:37 +0700, Robert Elz wrote:
> Date:Mon, 28 Jun 2021 15:48:33 +0200
> From:Vincent Lefevre
> Message-ID: <20210628134833.ga46...@zira.vinc17.org>
>
> | So, if writing to a closed fd yields unspecified behaviour, what
> | does "refers to no open
I forgot another useful case with write error checking.
For instance, I expect the following command to terminate,
which is not the case with ksh:
( trap '' PIPE; while pwd; do :; done; ) | head
Worse, with ksh93, when I hit Ctrl-C to interrupt this command,
a ksh93 process is still running,
On Mon, Jun 28, 2021 at 2:53 PM Vincent Lefevre via austin-group-l at The
Open Group wrote:
> On 2021-06-28 21:28:37 +0700, Robert Elz wrote:
> > Date:Mon, 28 Jun 2021 15:48:33 +0200
> > From:Vincent Lefevre
> > Message-ID: <20210628134833.ga46...@zira.vinc17.org>
>
16 matches
Mail list logo
