linux-kernel - Re: [PATCH] Add cloexec information to fdinfo

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Message-ID: <4E0B03A5.7020207@draigBrady.com>
Date:	Wed, 29 Jun 2011 11:51:17 +0100
From:	Pádraig Brady <P@...igBrady.com>
To:	Ulrich Drepper <drepper@...adia.org>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	akpm@...ux-foundation.org, kosaki.motohiro@...fujitsu.com,
	linux-kernel@...r.kernel.org, rientjes@...gle.com,
	viro@...iv.linux.org.uk, wilsons@...rt.ca
Subject: Re: [PATCH] Add cloexec information to fdinfo

On 29/06/11 09:15, Ulrich Drepper wrote:
> On 06/28/2011 01:23 PM, Linus Torvalds wrote:
>> The description makes no mention of why this would be needed?
> 
> In this specific case I was trying to re-implement the pfiles program.
> For normal file descriptors (not sockets) this was the last piece of
> information which wasn't available.  This is all part of my "give
> Solaris users no reason to not switch" effort.  I intend to offer the
> code to the util-linux-ng maintainers.

For the curious (me):

solaris:~ > pfiles $$
8418:   -bash
  Current rlimit: 256 file descriptors
   0: S_IFCHR mode:0620 dev:349,28 ino:130202 uid:11003 gid:7 rdev:24,116
      O_RDWR|O_NOCTTY|O_LARGEFILE
      /dev/pts/116
   1: S_IFCHR mode:0620 dev:349,28 ino:130202 uid:11003 gid:7 rdev:24,116
      O_RDWR|O_NOCTTY|O_LARGEFILE
      /dev/pts/116
   2: S_IFCHR mode:0620 dev:349,28 ino:130202 uid:11003 gid:7 rdev:24,116
      O_RDWR|O_NOCTTY|O_LARGEFILE
      /dev/pts/116
   3: S_IFDOOR mode:0444 dev:347,0 ino:189 uid:0 gid:0 size:0
      O_RDONLY|O_LARGEFILE FD_CLOEXEC  door to nscd[11276]
      /var/run/name_service_door
 255: S_IFCHR mode:0620 dev:349,28 ino:130202 uid:11003 gid:7 rdev:24,116
      O_RDWR|O_NOCTTY|O_LARGEFILE FD_CLOEXEC
      /dev/pts/116

I guess `lsof +f g` could be suitably embellished as well.

cheers,
Pádraig.
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