[AppArmor 15/45] Pass struct vfsmount to the inode_rmdir LSM hook

jjohansen
2007-10-26T07:03:15Z

[-- Attachment #1: security-rmdir.diff --]
[-- Type: text/plain, Size: 3967 bytes --]

This is needed for computing pathnames in the AppArmor LSM.

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

---
fs/namei.c | 2 +-
include/linux/security.h | 10 +++++++---
security/dummy.c | 3 ++-
security/security.c | 5 +++--
security/selinux/hooks.c | 3 ++-
5 files changed, 15 insertions(+), 8 deletions(-)

--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2132,7 +2132,7 @@ int vfs_rmdir(struct inode *dir, struct
if (d_mountpoint(dentry))
error = -EBUSY;
else {
- error = security_inode_rmdir(dir, dentry);
+ error = security_inode_rmdir(dir, dentry, mnt);
if (!error) {
error = dir->i_op->rmdir(dir, dentry);
if (!error)
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -332,6 +332,7 @@ struct request_sock;
* Check the permission to remove a directory.
* @dir contains the inode structure of parent of the directory to be removed.
* @dentry contains the dentry structure of directory to be removed.
+ * @mnt is the vfsmount corresponding to @dentry (may be NULL).
* Return 0 if permission is granted.
* @inode_mknod:
* Check permissions when creating a special file (or a socket or a fifo
@@ -1252,7 +1253,8 @@ struct security_operations {
struct vfsmount *mnt, const char *old_name);
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_rmdir) (struct inode *dir, struct dentry *dentry,
+ struct vfsmount *mnt);
int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
struct vfsmount *mnt, int mode, dev_t dev);
int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
@@ -1511,7 +1513,8 @@ int security_inode_symlink(struct inode
struct vfsmount *mnt, const char *old_name);
int security_inode_mkdir(struct inode *dir, struct dentry *dentry,
struct vfsmount *mnt, int mode);
-int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
+int security_inode_rmdir(struct inode *dir, struct dentry *dentry,
+ struct vfsmount *mnt);
int security_inode_mknod(struct inode *dir, struct dentry *dentry,
struct vfsmount *mnt, int mode, dev_t dev);
int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
@@ -1854,7 +1857,8 @@ static inline int security_inode_mkdir (
}

static inline int security_inode_rmdir (struct inode *dir,
- struct dentry *dentry)
+ struct dentry *dentry,
+ struct vfsmount *mnt)
{
return 0;
}
--- a/security/dummy.c
+++ b/security/dummy.c
@@ -292,7 +292,8 @@ static int dummy_inode_mkdir (struct ino
return 0;
}

-static int dummy_inode_rmdir (struct inode *inode, struct dentry *dentry)
+static int dummy_inode_rmdir (struct inode *inode, struct dentry *dentry,
+ struct vfsmount *mnt)
{
return 0;
}
--- a/security/security.c
+++ b/security/security.c
@@ -369,11 +369,12 @@ int security_inode_mkdir(struct inode *d
return security_ops->inode_mkdir(dir, dentry, mnt, mode);
}

-int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
+int security_inode_rmdir(struct inode *dir, struct dentry *dentry,
+ struct vfsmount *mnt)
{
if (unlikely(IS_PRIVATE(dentry->d_inode)))
return 0;
- return security_ops->inode_rmdir(dir, dentry);
+ return security_ops->inode_rmdir(dir, dentry, mnt);
}

int security_inode_mknod(struct inode *dir, struct dentry *dentry,
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -2227,7 +2227,8 @@ static int selinux_inode_mkdir(struct in
return may_create(dir, dentry, SECCLASS_DIR);
}

-static int selinux_inode_rmdir(struct inode *dir, struct dentry *dentry)
+static int selinux_inode_rmdir(struct inode *dir, struct dentry *dentry,
+ struct vfsmount *mnt)
{
return may_link(dir, dentry, MAY_RMDIR);
}

--