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Subject[RFC 7/28] Pass struct vfsmount to the inode_mkdir LSM hook
Pass struct vfsmount to the inode_mkdir LSM hook

Signed-off-by: Tony Jones <tonyj@suse.de>
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>

Index: linux-2.6/fs/namei.c
===================================================================
--- linux-2.6.orig/fs/namei.c
+++ linux-2.6/fs/namei.c
@@ -1928,7 +1928,7 @@ int vfs_mkdir(struct inode *dir, struct
return -EPERM;

mode &= (S_IRWXUGO|S_ISVTX);
- error = security_inode_mkdir(dir, dentry, mode);
+ error = security_inode_mkdir(dir, dentry, mnt, mode);
if (error)
return error;

Index: linux-2.6/include/linux/security.h
===================================================================
--- linux-2.6.orig/include/linux/security.h
+++ linux-2.6/include/linux/security.h
@@ -308,6 +308,7 @@ struct request_sock;
* associated with inode strcture @dir.
* @dir containst the inode structure of parent of the directory to be created.
* @dentry contains the dentry structure of new directory.
+ * @mnt is the vfsmount corresponding to @dentry (may be NULL).
* @mode contains the mode of new directory.
* Return 0 if permission is granted.
* @inode_rmdir:
@@ -1213,7 +1214,8 @@ struct security_operations {
int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
int (*inode_symlink) (struct inode *dir,
struct dentry *dentry, const char *old_name);
- int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
+ int (*inode_mkdir) (struct inode *dir, struct dentry *dentry,
+ struct vfsmount *mnt, int mode);
int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
int mode, dev_t dev);
@@ -1650,11 +1652,12 @@ static inline int security_inode_symlink

static inline int security_inode_mkdir (struct inode *dir,
struct dentry *dentry,
+ struct vfsmount *mnt,
int mode)
{
if (unlikely (IS_PRIVATE (dir)))
return 0;
- return security_ops->inode_mkdir (dir, dentry, mode);
+ return security_ops->inode_mkdir (dir, dentry, mnt, mode);
}

static inline int security_inode_rmdir (struct inode *dir,
@@ -2371,6 +2374,7 @@ static inline int security_inode_symlink

static inline int security_inode_mkdir (struct inode *dir,
struct dentry *dentry,
+ struct vfsmount *mnt,
int mode)
{
return 0;
Index: linux-2.6/security/dummy.c
===================================================================
--- linux-2.6.orig/security/dummy.c
+++ linux-2.6/security/dummy.c
@@ -288,7 +288,7 @@ static int dummy_inode_symlink (struct i
}

static int dummy_inode_mkdir (struct inode *inode, struct dentry *dentry,
- int mask)
+ struct vfsmount *mnt, int mask)
{
return 0;
}
Index: linux-2.6/security/selinux/hooks.c
===================================================================
--- linux-2.6.orig/security/selinux/hooks.c
+++ linux-2.6/security/selinux/hooks.c
@@ -2166,7 +2166,8 @@ static int selinux_inode_symlink(struct
return may_create(dir, dentry, SECCLASS_LNK_FILE);
}

-static int selinux_inode_mkdir(struct inode *dir, struct dentry *dentry, int mask)
+static int selinux_inode_mkdir(struct inode *dir, struct dentry *dentry,
+ struct vfsmount *mnt, int mask)
{
return may_create(dir, dentry, SECCLASS_DIR);
}
-
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