selinux: Pass security pointer to determine_inode_label()

Right now selinux_determine_inode_label() works on security pointer of
current task. Soon I need this to work on a security pointer retrieved
from a set of creds. So start passing in a pointer and caller can
decide where to fetch security pointer from.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Paul Moore <paul@paul-moore.com>

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index a2d5108..f9d398b 100644 (file)
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1808,13 +1808,13 @@ out:
 /*
  * Determine the label for an inode that might be unioned.
  */
-static int selinux_determine_inode_label(struct inode *dir,
-                                        const struct qstr *name,
-                                        u16 tclass,
-                                        u32 *_new_isid)
+static int
+selinux_determine_inode_label(const struct task_security_struct *tsec,
+                                struct inode *dir,
+                                const struct qstr *name, u16 tclass,
+                                u32 *_new_isid)
 {
        const struct superblock_security_struct *sbsec = dir->i_sb->s_security;
-       const struct task_security_struct *tsec = current_security();
 
        if ((sbsec->flags & SE_SBINITIALIZED) &&
            (sbsec->behavior == SECURITY_FS_USE_MNTPOINT)) {
@@ -1857,8 +1857,8 @@ static int may_create(struct inode *dir,
        if (rc)
                return rc;
 
-       rc = selinux_determine_inode_label(dir, &dentry->d_name, tclass,
-                                          &newsid);
+       rc = selinux_determine_inode_label(current_security(), dir,
+                                          &dentry->d_name, tclass, &newsid);
        if (rc)
                return rc;
 
@@ -2838,7 +2838,8 @@ static int selinux_dentry_init_security(struct dentry *dentry, int mode,
        u32 newsid;
        int rc;
 
-       rc = selinux_determine_inode_label(d_inode(dentry->d_parent), name,
+       rc = selinux_determine_inode_label(current_security(),
+                                          d_inode(dentry->d_parent), name,
                                           inode_mode_to_security_class(mode),
                                           &newsid);
        if (rc)
@@ -2863,7 +2864,7 @@ static int selinux_inode_init_security(struct inode *inode, struct inode *dir,
        sid = tsec->sid;
        newsid = tsec->create_sid;
 
-       rc = selinux_determine_inode_label(
+       rc = selinux_determine_inode_label(current_security(),
                dir, qstr,
                inode_mode_to_security_class(inode->i_mode),
                &newsid);