Andy Whitcroft 1fa1e7f615 readlinkat: ensure we return ENOENT for the empty pathname for normal lookups ... Since the commit below which added O_PATH support to the *at() calls, the error return for readlink/readlinkat for the empty pathname has switched from ENOENT to EINVAL: commit 65cfc67223 Author: Al Viro <viro@zeniv.linux.org.uk> Date: Sun Mar 13 15:56:26 2011 -0400 readlinkat(), fchownat() and fstatat() with empty relative pathnames This is both unexpected for userspace and makes readlink/readlinkat inconsistant with all other interfaces; and inconsistant with our stated return for these pathnames. As the readlinkat call does not have a flags parameter we cannot use the AT_EMPTY_PATH approach used in the other calls. Therefore expose whether the original path is infact entry via a new user_path_at_empty() path lookup function. Use this to determine whether to default to EINVAL or ENOENT for failures. Addresses http://bugs.launchpad.net/bugs/817187 [akpm@linux-foundation.org: remove unused getname_flags()] Signed-off-by: Andy Whitcroft <apw@canonical.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <stable@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Christoph Hellwig <hch@lst.de>		2011-11-02 12:53:42 +01:00
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acpi	PCI hotplug: acpiphp: Prevent deadlock on PCI-to-PCI bridge remove	2011-10-14 09:05:31 -07:00
asm-generic	Merge Qualcom Hexagon architecture	2011-11-01 07:48:13 -07:00
crypto	crypto: Add a report function pointer to crypto_type	2011-10-21 14:24:03 +02:00
drm	treewide: use __printf not __attribute__((format(printf,...)))	2011-10-31 17:30:54 -07:00
keys
linux	readlinkat: ensure we return ENOENT for the empty pathname for normal lookups	2011-11-02 12:53:42 +01:00
math-emu
media	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2011-10-31 15:42:54 -07:00
misc
mtd
net	treewide: use __printf not __attribute__((format(printf,...)))	2011-10-31 17:30:54 -07:00
pcmcia
rdma	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband	2011-11-01 10:51:38 -07:00
rxrpc
scsi	Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6	2011-10-28 16:44:18 -07:00
sound	treewide: use __printf not __attribute__((format(printf,...)))	2011-10-31 17:30:54 -07:00
target	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2011-10-25 12:11:02 +02:00
trace	mm: change isolate mode from #define to bitwise type	2011-10-31 17:30:44 -07:00
video	Merge branch 'for-florian' of git://gitorious.org/linux-omap-dss2/linux into fbdev-next	2011-10-15 00:19:52 +00:00
xen	treewide: use __printf not __attribute__((format(printf,...)))	2011-10-31 17:30:54 -07:00
Kbuild