From: Michael Schmitz <schmitzmic@gmail.com>
To: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
linux-m68k <linux-m68k@lists.linux-m68k.org>
Cc: Debian m68k <debian-68k@lists.debian.org>, Helge Deller <deller@gmx.de>
Subject: Re: Seccomp support for linux-m68k
Date: Sun, 26 Jul 2020 13:34:34 +1200 [thread overview]
Message-ID: <ee076f6a-143a-9f6e-7bbf-51112d64ab00@gmail.com> (raw)
In-Reply-To: <b0d75d13-e241-43a9-30a7-46330e68cf30@physik.fu-berlin.de>
Hi Adrian,
Am 26.07.2020 um 06:54 schrieb John Paul Adrian Glaubitz:
>> What return code would we need to set on returning from an aborted syscall?
>> (Without setting a specific one, -ENOSYS will be used by default.)
>
> If we're talking about syscall_trace_enter(), it should be -1.
OK, that's -EPERM. Reading the comment in asm/errno.h, -ENOSYS is not a
legitimate return code for syscalls to use. I'll change the trace entry
check to set -EPERM instead.
Andreas: could we preset -EPERM as return code on entering
do_trace_entry to save another jump, possibly even without setting
-ENOSYS before attempting the syscall, or would that break the syscall ABI?
Cheers,
Michael
>
> Adrian
>
next prev parent reply other threads:[~2020-07-26 1:34 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-20 8:46 Seccomp support for linux-m68k John Paul Adrian Glaubitz
2020-03-20 22:49 ` Finn Thain
2020-03-20 22:59 ` John Paul Adrian Glaubitz
2020-03-20 23:08 ` Finn Thain
2020-03-21 22:18 ` Michael Schmitz
2020-03-21 22:48 ` John Paul Adrian Glaubitz
2020-03-21 23:01 ` John Paul Adrian Glaubitz
2020-07-21 15:13 ` John Paul Adrian Glaubitz
2020-07-25 9:29 ` Michael Schmitz
2020-07-25 11:55 ` Andreas Schwab
2020-07-26 1:23 ` Michael Schmitz
2020-07-26 11:03 ` Andreas Schwab
2020-07-26 21:02 ` Michael Schmitz
2020-07-26 21:08 ` Andreas Schwab
2020-07-26 21:39 ` Michael Schmitz
2020-07-27 6:35 ` Andreas Schwab
2020-07-25 18:54 ` John Paul Adrian Glaubitz
2020-07-26 1:34 ` Michael Schmitz [this message]
2020-07-26 7:13 ` Michael Schmitz
2020-07-26 11:05 ` Andreas Schwab
2020-07-26 20:46 ` Michael Schmitz
2020-07-26 21:10 ` Andreas Schwab
2020-07-26 22:40 ` Michael Schmitz
2020-07-25 22:48 ` John Paul Adrian Glaubitz
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