From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sat, 15 Oct 2016 00:23:33 +0000 (-0700)
Subject: Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszer... 
X-Git-Tag: v4.9-rc1~8
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1a892b485f328224b4882818f84fcc0a3208677d;p=platform%2Fkernel%2Flinux-exynos.git

Merge branch 'overlayfs-linus' of git://git./linux/kernel/git/mszeredi/vfs

Pull overlayfs updates from Miklos Szeredi:
 "This update contains fixes to the "use mounter's permission to access
  underlying layers" area, and miscellaneous other fixes and cleanups.

  No new features this time"

* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  ovl: use vfs_get_link()
  vfs: add vfs_get_link() helper
  ovl: use generic_readlink
  ovl: explain error values when removing acl from workdir
  ovl: Fix info leak in ovl_lookup_temp()
  ovl: during copy up, switch to mounter's creds early
  ovl: lookup: do getxattr with mounter's permission
  ovl: copy_up_xattr(): use strnlen
---

1a892b485f328224b4882818f84fcc0a3208677d
diff --cc fs/overlayfs/copy_up.c
index 3f803b3,e9d4013..aeb60f7
--- a/fs/overlayfs/copy_up.c
+++ b/fs/overlayfs/copy_up.c
@@@ -57,9 -57,10 +57,10 @@@ int ovl_copy_xattr(struct dentry *old, 
  	ssize_t list_size, size, value_size = 0;
  	char *buf, *name, *value = NULL;
  	int uninitialized_var(error);
+ 	size_t slen;
  
 -	if (!old->d_inode->i_op->getxattr ||
 -	    !new->d_inode->i_op->getxattr)
 +	if (!(old->d_inode->i_opflags & IOP_XATTR) ||
 +	    !(new->d_inode->i_opflags & IOP_XATTR))
  		return 0;
  
  	list_size = vfs_listxattr(old, NULL, 0);
diff --cc fs/overlayfs/inode.c
index c18d6a4,bc6d261..c58f01b
--- a/fs/overlayfs/inode.c
+++ b/fs/overlayfs/inode.c
@@@ -375,9 -354,12 +351,9 @@@ static const struct inode_operations ov
  static const struct inode_operations ovl_symlink_inode_operations = {
  	.setattr	= ovl_setattr,
  	.get_link	= ovl_get_link,
- 	.readlink	= ovl_readlink,
+ 	.readlink	= generic_readlink,
  	.getattr	= ovl_getattr,
 -	.setxattr	= generic_setxattr,
 -	.getxattr	= generic_getxattr,
  	.listxattr	= ovl_listxattr,
 -	.removexattr	= generic_removexattr,
  	.update_time	= ovl_update_time,
  };