[PATCH 3/5] selinux: Pass security pointer to determine_inode_label()

From: Vivek Goyal
Date: Tue Jul 05 2016 - 11:54:44 EST


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@xxxxxxxxxx>
---
security/selinux/hooks.c | 17 +++++++++--------
1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index c68223c..86a07ed 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1785,13 +1785,13 @@ 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,
+static int selinux_determine_inode_label(const void *security,
+ 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();
+ const struct task_security_struct *tsec = security;

if ((sbsec->flags & SE_SBINITIALIZED) &&
(sbsec->behavior == SECURITY_FS_USE_MNTPOINT)) {
@@ -1834,8 +1834,8 @@ 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;

@@ -2815,7 +2815,8 @@ 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)
@@ -2840,7 +2841,7 @@ 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);
--
2.7.4