hfsplus: add necessary declarations for POSIX ACLs support
authorVyacheslav Dubeyko <slava@dubeyko.com>
Wed, 11 Sep 2013 21:24:28 +0000 (14:24 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 11 Sep 2013 22:59:00 +0000 (15:59 -0700)
commit2c92057e45c2d60f859ca3606cfd402c48785d82
treec4d2a3c4919f989f81c615875aa2675d87b037fb
parent7c1d69ee11b8986c40a53d8e2238204fc86f5b33
hfsplus: add necessary declarations for POSIX ACLs support

This patchset implements POSIX ACLs support in hfsplus driver.

Mac OS X beginning with version 10.4 ("Tiger") support NFSv4 ACLs, which
are part of the NFSv4 standard.  HFS+ stores ACLs in the form of
specially named extended attributes (com.apple.system.Security).

But this patchset doesn't use "com.apple.system.Security" extended
attributes.  It implements support of POSIX ACLs in the form of extended
attributes with names "system.posix_acl_access" and
"system.posix_acl_default".  These xattrs are treated only under Linux.
POSIX ACLs doesn't mean something under Mac OS X.  Thereby, this patch
set provides opportunity to use POSIX ACLs under Linux on HFS+
filesystem.

This patch:

Add CONFIG_HFSPLUS_FS_POSIX_ACL kernel configuration option, DBG_ACL_MOD
debugging flag and acl.h file with declaration of essential functions
for support POSIX ACLs in hfsplus driver.

Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Hin-Tak Leung <htl10@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/hfsplus/Kconfig
fs/hfsplus/acl.h [new file with mode: 0644]
fs/hfsplus/hfsplus_fs.h