[PATCH 11/13] vfs: export __inode_permission() to modules

Miklos Szeredi
2012-08-15T15:47:55Z

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 371bcc4..8578209 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 ac2526d..9be439a 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -348,6 +348,7 @@ 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 1265e24..d573703 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2418,6 +2418,7 @@ 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)
--
1.7.7