Re: [RFC PATCH 0/2] net: connect to UNIX sockets from specified root
From: Alan Cox <hidden>
Date: 2012-08-10 19:24:08
Also in:
linux-nfs, lkml
On Fri, 10 Aug 2012 15:11:50 -0400 "J. Bruce Fields" [off-list ref] wrote:
On Fri, Aug 10, 2012 at 07:26:28PM +0100, Alan Cox wrote:quoted
quoted
On that whole subject... Do we need a Unix domain socket equivalent to openat()?I don't think so. The name is just a file system indexing trick, it's not really the socket proper. It's little more than "ascii string with permissions attached"That's overstating the case. As I understand it the address is resolved by a pathname lookup like any other--it can follow symlinks, is relative to the current working directory and filesystem namespace, etc.
Explicitly for Linux yes - this is not generally true of the AF_UNIX socket domain and even the permissions aspect isn't guaranteed to be supported on some BSD environments ! The name is however just a proxy for the socket itself. You don't even get a device node in the usual sense or the same inode in the file system space. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html