LSM: separate LSM_AUDIT_DATA_DENTRY from LSM_AUDIT_DATA_PATH

This patch separates and audit message that only contains a dentry from
one that contains a full path.  This allows us to make it harder to
misuse the interfaces or for the interfaces to be implemented wrong.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>

1 files changed, 13 insertions, 13 deletions

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index ad664d3056eb..9e8078a42a94 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1569,8 +1569,8 @@ static int may_create(struct inode *dir,
         sid = tsec->sid;
         newsid = tsec->create_sid;
 
-        COMMON_AUDIT_DATA_INIT(&ad, PATH);
-        ad.u.path.dentry = dentry;
+        COMMON_AUDIT_DATA_INIT(&ad, DENTRY);
+        ad.u.dentry = dentry;
 
         rc = avc_has_perm(sid, dsec->sid, SECCLASS_DIR,
                           DIR__ADD_NAME | DIR__SEARCH,
@@ -1621,8 +1621,8 @@ static int may_link(struct inode *dir,
         dsec = dir->i_security;
         isec = dentry->d_inode->i_security;
 
-        COMMON_AUDIT_DATA_INIT(&ad, PATH);
-        ad.u.path.dentry = dentry;
+        COMMON_AUDIT_DATA_INIT(&ad, DENTRY);
+        ad.u.dentry = dentry;
 
         av = DIR__SEARCH;
         av |= (kind ? DIR__REMOVE_NAME : DIR__ADD_NAME);
@@ -1667,9 +1667,9 @@ static inline int may_rename(struct inode *old_dir,
         old_is_dir = S_ISDIR(old_dentry->d_inode->i_mode);
         new_dsec = new_dir->i_security;
 
-        COMMON_AUDIT_DATA_INIT(&ad, PATH);
+        COMMON_AUDIT_DATA_INIT(&ad, DENTRY);
 
-        ad.u.path.dentry = old_dentry;
+        ad.u.dentry = old_dentry;
         rc = avc_has_perm(sid, old_dsec->sid, SECCLASS_DIR,
                           DIR__REMOVE_NAME | DIR__SEARCH, &ad);
         if (rc)
@@ -1685,7 +1685,7 @@ static inline int may_rename(struct inode *old_dir,
                         return rc;
         }
 
-        ad.u.path.dentry = new_dentry;
+        ad.u.dentry = new_dentry;
         av = DIR__ADD_NAME | DIR__SEARCH;
         if (new_dentry->d_inode)
                 av |= DIR__REMOVE_NAME;
@@ -2468,8 +2468,8 @@ static int selinux_sb_kern_mount(struct super_block *sb, int flags, void *data)
         if (flags & MS_KERNMOUNT)
                 return 0;
 
-        COMMON_AUDIT_DATA_INIT(&ad, PATH);
-        ad.u.path.dentry = sb->s_root;
+        COMMON_AUDIT_DATA_INIT(&ad, DENTRY);
+        ad.u.dentry = sb->s_root;
         return superblock_has_perm(cred, sb, FILESYSTEM__MOUNT, &ad);
 }
 
@@ -2478,8 +2478,8 @@ static int selinux_sb_statfs(struct dentry *dentry)
         const struct cred *cred = current_cred();
         struct common_audit_data ad;
 
-        COMMON_AUDIT_DATA_INIT(&ad, PATH);
-        ad.u.path.dentry = dentry->d_sb->s_root;
+        COMMON_AUDIT_DATA_INIT(&ad, DENTRY);
+        ad.u.dentry = dentry->d_sb->s_root;
         return superblock_has_perm(cred, dentry->d_sb, FILESYSTEM__GETATTR, &ad);
 }
 
@@ -2732,8 +2732,8 @@ static int selinux_inode_setxattr(struct dentry *dentry, const char *name,
         if (!is_owner_or_cap(inode))
                 return -EPERM;
 
-        COMMON_AUDIT_DATA_INIT(&ad, PATH);
-        ad.u.path.dentry = dentry;
+        COMMON_AUDIT_DATA_INIT(&ad, DENTRY);
+        ad.u.dentry = dentry;
 
         rc = avc_has_perm(sid, isec->sid, isec->sclass,
                           FILE__RELABELFROM, &ad);