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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2009-10-04 21:49:47 +0900
committerJames Morris <jmorris@namei.org>2009-10-12 10:56:00 +1100
commit89eda06837094ce9f34fae269b8773fcfd70f046 (patch)
treedc11701c68ebcc8346d7567cfb53b9c7327ef445 /security
parent941fc5b2bf8f7dd1d0a9c502e152fa719ff6578e (diff)
downloadvexpress-lsk-89eda06837094ce9f34fae269b8773fcfd70f046.tar.gz
LSM: Add security_path_chmod() and security_path_chown().
This patch allows pathname based LSM modules to check chmod()/chown() operations. Since notify_change() does not receive "struct vfsmount *", we add security_path_chmod() and security_path_chown() to the caller of notify_change(). These hooks are used by TOMOYO. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security')
-rw-r--r--security/capability.c13
-rw-r--r--security/security.c15
2 files changed, 28 insertions, 0 deletions
diff --git a/security/capability.c b/security/capability.c
index fce07a7bc82..09279a8d4a1 100644
--- a/security/capability.c
+++ b/security/capability.c
@@ -308,6 +308,17 @@ static int cap_path_truncate(struct path *path, loff_t length,
{
return 0;
}
+
+static int cap_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
+ mode_t mode)
+{
+ return 0;
+}
+
+static int cap_path_chown(struct path *path, uid_t uid, gid_t gid)
+{
+ return 0;
+}
#endif
static int cap_file_permission(struct file *file, int mask)
@@ -977,6 +988,8 @@ void security_fixup_ops(struct security_operations *ops)
set_to_cap_if_null(ops, path_link);
set_to_cap_if_null(ops, path_rename);
set_to_cap_if_null(ops, path_truncate);
+ set_to_cap_if_null(ops, path_chmod);
+ set_to_cap_if_null(ops, path_chown);
#endif
set_to_cap_if_null(ops, file_permission);
set_to_cap_if_null(ops, file_alloc_security);
diff --git a/security/security.c b/security/security.c
index c4c673240c1..5259270e558 100644
--- a/security/security.c
+++ b/security/security.c
@@ -434,6 +434,21 @@ int security_path_truncate(struct path *path, loff_t length,
return 0;
return security_ops->path_truncate(path, length, time_attrs);
}
+
+int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
+ mode_t mode)
+{
+ if (unlikely(IS_PRIVATE(dentry->d_inode)))
+ return 0;
+ return security_ops->path_chmod(dentry, mnt, mode);
+}
+
+int security_path_chown(struct path *path, uid_t uid, gid_t gid)
+{
+ if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
+ return 0;
+ return security_ops->path_chown(path, uid, gid);
+}
#endif
int security_inode_create(struct inode *dir, struct dentry *dentry, int mode)