From: Al Viro <viro@ZenIV.linux.org.uk>
To: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC] status of execve() work - per-architecture patches solicited
Date: Wed, 19 Sep 2012 14:32:26 +0100 [thread overview]
Message-ID: <20120919133226.GZ13973@ZenIV.linux.org.uk> (raw)
In-Reply-To: <5059B892.4030806@synopsys.com>
On Wed, Sep 19, 2012 at 05:50:34PM +0530, Vineet Gupta wrote:
> Hi Al,
>
> It must be noted that despite having seemingly independent
> __ARCH_WANT_(KERNEL|SYS)_EXECVE, arches which have a kernel syscall trap
> based kernel_execve(), e.g. MIPS, can't implement __ARCH_WANT_SYS_EXECVE
> alone - they need to first convert
> to __ARCH_WANT_KERNEL_EXECVE as well (although it probably doesn't make
> sense for anyone to just implement one - but in terms of staging -
> having only one, breaks stuff IMHO).
Of course - that's the reason for kernel_execve() being pulled into the
mix at all. Unified sys_execve() relies on not using a trap to do
kernel_execve(); it's not exactly the same thing as having it done
by generic instance in fs/exec.c (e.g. some architectures were already
doing it that way, with their own instances, some in asm glue, some
in C) but it is a prerequisite.
prev parent reply other threads:[~2012-09-19 13:32 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-07 18:20 [RFC] status of execve() work - per-architecture patches solicited Al Viro
2012-09-07 18:22 ` Al Viro
2012-09-10 13:40 ` Greg Ungerer
2012-09-10 16:49 ` Al Viro
2012-09-11 3:39 ` Greg Ungerer
2012-09-13 13:27 ` Greg Ungerer
2012-09-13 13:27 ` Greg Ungerer
2012-09-10 22:20 ` Mark Salter
2012-09-10 22:20 ` [PATCH 1/2] c6x: implement ret_from_kernel_execve() and switch to generic kernel_execve() Mark Salter
2012-09-10 22:20 ` [PATCH 2/2] c6x: switch to generic sys_execve() Mark Salter
2012-09-17 3:26 ` [RFC] status of execve() work - per-architecture patches solicited Al Viro
2012-09-21 16:26 ` Mark Salter
2012-09-21 16:26 ` [PATCH 1/3] c6x: add ret_from_kernel_thread(), simplify kernel_thread() Mark Salter
2012-09-21 16:26 ` [PATCH 2/3] c6x: switch to generic kernel_execve Mark Salter
2012-09-21 16:26 ` [PATCH 3/3] c6x: switch to generic sys_execve Mark Salter
2012-09-21 18:39 ` [RFC] status of execve() work - per-architecture patches solicited Al Viro
2012-09-22 11:16 ` Greg Ungerer
2012-09-23 0:46 ` Al Viro
2012-09-24 10:59 ` Vineet Gupta
2012-09-24 10:59 ` Vineet Gupta
2012-09-17 9:29 ` Michal Simek
2012-09-17 22:57 ` Al Viro
2012-09-19 12:20 ` Vineet Gupta
2012-09-19 12:20 ` Vineet Gupta
2012-09-19 13:32 ` Al Viro [this message]
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