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From: Miklos Szeredi <miklos@szeredi.hu>
To: viro@ZenIV.linux.org.uk, torvalds@linux-foundation.org
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	hch@infradead.org, akpm@linux-foundation.org, apw@canonical.com,
	nbd@openwrt.org, neilb@suse.de, jordipujolp@gmail.com,
	ezk@fsl.cs.sunysb.edu, dhowells@redhat.com,
	sedat.dilek@googlemail.com, hooanon05@yahoo.co.jp,
	mszeredi@suse.cz
Subject: [PATCH 11/13] vfs-export-inode_permission-to-modules
Date: Tue, 12 Mar 2013 16:41:46 +0100	[thread overview]
Message-ID: <1363102908-28956-12-git-send-email-miklos@szeredi.hu> (raw)
In-Reply-To: <1363102908-28956-1-git-send-email-miklos@szeredi.hu>

From: Miklos Szeredi <mszeredi@suse.cz>

We need to be able to check inode permissions (but not filesystem implied
permissions) for stackable filesystems.  Expose this interface for overlayfs.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
---
 fs/internal.h      |    5 -----
 fs/namei.c         |    1 +
 include/linux/fs.h |    1 +
 3 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/fs/internal.h b/fs/internal.h
index 507141f..89481ac 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -42,11 +42,6 @@ static inline int __sync_blockdev(struct block_device *bdev, int wait)
 extern void __init chrdev_init(void);
 
 /*
- * namei.c
- */
-extern int __inode_permission(struct inode *, int);
-
-/*
  * namespace.c
  */
 extern int copy_mount_options(const void __user *, unsigned long *);
diff --git a/fs/namei.c b/fs/namei.c
index c1c0c15..e1cffbd 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -402,6 +402,7 @@ int __inode_permission(struct inode *inode, int mask)
 
 	return security_inode_permission(inode, mask);
 }
+EXPORT_SYMBOL(__inode_permission);
 
 /**
  * sb_permission - Check superblock-level permissions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index e4e5fbd..3353de6 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2224,6 +2224,7 @@ extern sector_t bmap(struct inode *, sector_t);
 #endif
 extern int notify_change(struct dentry *, struct iattr *);
 extern int inode_permission(struct inode *, int);
+extern int __inode_permission(struct inode *, int);
 extern int generic_permission(struct inode *, int);
 
 static inline bool execute_ok(struct inode *inode)
-- 
1.7.10.4


  parent reply	other threads:[~2013-03-12 15:42 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-12 15:41 [PATCH 00/13] overlay filesystem: request for inclusion (v16) Miklos Szeredi
2013-03-12 15:41 ` [PATCH 01/13] vfs-add-i_op-dentry_open Miklos Szeredi
2013-03-12 15:41 ` [PATCH 02/13] vfs-export-do_splice_direct-to-modules Miklos Szeredi
2013-03-12 15:41 ` [PATCH 03/13] vfs-introduce-clone_private_mount Miklos Szeredi
2013-03-12 15:41 ` [PATCH 04/13] overlay filesystem Miklos Szeredi
2013-03-12 15:41 ` [PATCH 05/13] overlayfs-add-statfs-support Miklos Szeredi
2013-03-12 15:41 ` [PATCH 06/13] overlayfs-implement-show_options Miklos Szeredi
2013-03-12 15:41 ` [PATCH 07/13] overlay-overlay-filesystem-documentation Miklos Szeredi
2013-03-12 15:41 ` [PATCH 08/13] fs-limit-filesystem-stacking-depth Miklos Szeredi
2013-03-12 15:41 ` [PATCH 09/13] overlayfs-fix-possible-leak-in-ovl_new_inode Miklos Szeredi
2013-03-12 15:41 ` [PATCH 10/13] overlayfs-create-new-inode-in-ovl_link Miklos Szeredi
2013-03-12 15:41 ` Miklos Szeredi [this message]
2013-03-12 15:41 ` [PATCH 12/13] ovl-switch-to-inode_permission Miklos Szeredi
2013-03-12 15:41 ` [PATCH 13/13] overlayfs-copy-up-i_uid-i_gid-from-the-underlying-inode Miklos Szeredi
2013-03-12 16:49 ` [PATCH 00/13] overlay filesystem: request for inclusion (v16) Sedat Dilek
2013-03-12 20:00   ` Miklos Szeredi
2013-03-12 17:22 ` J. R. Okajima
2013-03-12 20:01   ` Miklos Szeredi
2013-03-12 21:50 ` Linus Torvalds
2013-03-12 22:23   ` Al Viro
2013-03-13  9:42     ` Sedat Dilek
2013-03-13 15:24     ` Miklos Szeredi
2013-03-13 18:52     ` Al Viro
2013-03-13 22:09       ` Miklos Szeredi
2013-03-13 23:19         ` Al Viro
2013-03-14 10:37           ` Miklos Szeredi
2013-03-14 12:57             ` DT_WHT (Re: [PATCH 00/13] overlay filesystem: request for inclusion (v16)) J. R. Okajima
2013-03-14 22:59             ` [PATCH 00/13] overlay filesystem: request for inclusion (v16) Al Viro
2013-03-18 11:27               ` Miklos Szeredi
2013-03-13 10:09 ` Sedat Dilek
2013-03-13 10:57   ` Miklos Szeredi

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