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Re: [RFC PATCH 0/5] net: socket bind to file descriptor introduced [message #47548 is a reply to message #47535]

Wed, 15 August 2012 17:54

hpa
Messages: 38
Registered: January 2007

Member

On 08/15/2012 09:52 AM, Ben Pfaff wrote:
> Stanislav Kinsbursky <skinsbursky@parallels.com> writes:
>
>> This system call is especially required for UNIX sockets, which has name
>> lenght limitation.
>
> The worst of the name length limitations can be worked around by
> opening the directory where the socket is to go as a file
> descriptor, then using /proc/self/fd/<fd>/<basename> as the name
> of the socket. This technique also works with "connect" and in
> other contexts where a struct sockaddr is needed. At first
> glance, it looks like your patches only help with "bind".
>

The really hard part is what to do with things that are supposed to
return a struct sockaddr. I also have some reservations about using a
new system call to deal with what at least theoretically is only part of
one socket domain.

-hpa

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[Message index]

		[RFC PATCH 0/5] net: socket bind to file descriptor introduced By: Stanislav Kinsbursky on Wed, 15 August 2012 16:21
		[RFC PATCH 2/5] net: split unix_bind() By: Stanislav Kinsbursky on Wed, 15 August 2012 16:22
		[RFC PATCH 1/5] net: cleanup unix_bind() a little By: Stanislav Kinsbursky on Wed, 15 August 2012 16:22
		[RFC PATCH 3/5] net: new protocol operation fbind() introduced By: Stanislav Kinsbursky on Wed, 15 August 2012 16:22
		[RFC PATCH 4/5] net: fbind() for unix sockets protocol operations introduced By: Stanislav Kinsbursky on Wed, 15 August 2012 16:22
		[RFC PATCH 5/5] syscall: sys_fbind() introduced By: Stanislav Kinsbursky on Wed, 15 August 2012 16:22
		Re: [RFC PATCH 5/5] syscall: sys_fbind() introduced By: hpa on Wed, 15 August 2012 16:30
		Re: [RFC PATCH 5/5] syscall: sys_fbind() introduced By: Stanislav Kinsbursky on Wed, 15 August 2012 16:43
		Re: [RFC PATCH 0/5] net: socket bind to file descriptor introduced By: hpa on Wed, 15 August 2012 17:54
		Re: [RFC PATCH 0/5] net: socket bind to file descriptor introduced By: ebiederm on Wed, 15 August 2012 19:49
		Re: [RFC PATCH 0/5] net: socket bind to file descriptor introduced By: hpa on Wed, 15 August 2012 20:58
		Re: [RFC PATCH 0/5] net: socket bind to file descriptor introduced By: ebiederm on Wed, 15 August 2012 21:25
		Re: [RFC PATCH 0/5] net: socket bind to file descriptor introduced By: ebiederm on Thu, 16 August 2012 03:03
		Re: [RFC PATCH 0/5] net: socket bind to file descriptor introduced By: bfields on Thu, 16 August 2012 13:54
		Re: [RFC PATCH 0/5] net: socket bind to file descriptor introduced By: Stanislav Kinsbursky on Mon, 20 August 2012 10:18
		Re: [RFC PATCH 0/5] net: socket bind to file descriptor introduced By: bfields on Tue, 04 September 2012 19:00
		Re: [RFC PATCH 0/5] net: socket bind to file descriptor introduced By: bfields on Fri, 05 October 2012 20:00
		Re: [RFC PATCH 0/5] net: socket bind to file descriptor introduced By: Stanislav Kinsbursky on Mon, 08 October 2012 08:37
		Re: [RFC PATCH 0/5] net: socket bind to file descriptor introduced By: Ben Pfaff on Wed, 15 August 2012 16:52

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