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13 June 2022, 11:31:42 UTC
Revision f0cc6ffb8ce8961db587e5072168cac0cbc25f05 authored by Linus Torvalds on 28 August 2013, 16:18:05 UTC, committed by Linus Torvalds on 28 August 2013, 16:18:05 UTC 
Revert "fs: Allow unprivileged linkat(..., AT_EMPTY_PATH) aka flink"
 
This reverts commit bb2314b47996491bbc5add73633905c3120b6268.

It wasn't necessarily wrong per se, but we're still busily discussing
the exact details of this all, so I'm going to revert it for now.

It's true that you can already do flink() through /proc and that flink()
isn't new.  But as Brad Spengler points out, some secure environments do
not mount proc, and flink adds a new interface that can avoid path
lookup of the source for those kinds of environments.

We may re-do this (and even mark it for stable backporting back in 3.11
and possibly earlier) once the whole discussion about the interface is done.

Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Brad Spengler <spender@grsecurity.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent fa8218d
History
Tip revision: f0cc6ffb8ce8961db587e5072168cac0cbc25f05 authored by Linus Torvalds on 28 August 2013, 16:18:05 UTC
Revert "fs: Allow unprivileged linkat(..., AT_EMPTY_PATH) aka flink"
Tip revision: f0cc6ff
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include
init
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kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.gitignore -rw-r--r-- 1.1 KB
.mailmap -rw-r--r-- 4.4 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 93.1 KB
Kbuild -rw-r--r-- 2.5 KB
Kconfig -rw-r--r-- 252 bytes
MAINTAINERS -rw-r--r-- 253.9 KB
Makefile -rw-r--r-- 47.4 KB
README -rw-r--r-- 18.3 KB
REPORTING-BUGS -rw-r--r-- 7.3 KB

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