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-rw-r--r--include/linux/security.h2
-rw-r--r--security/capability.c2
-rw-r--r--security/security.c6
-rw-r--r--security/selinux/hooks.c6
-rw-r--r--security/smack/smack_lsm.c6
5 files changed, 14 insertions, 8 deletions
diff --git a/include/linux/security.h b/include/linux/security.h
index 84a202ac3de9..2f99ecd0fb2a 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -1454,7 +1454,7 @@ struct security_operations {
struct inode *new_dir, struct dentry *new_dentry);
int (*inode_readlink) (struct dentry *dentry);
int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
- int (*inode_permission) (struct inode *inode, int mask);
+ int (*inode_permission) (struct inode *inode, int mask, unsigned flags);
int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
int (*inode_setxattr) (struct dentry *dentry, const char *name,
diff --git a/security/capability.c b/security/capability.c
index ab3d807accc3..56bb1605fd79 100644
--- a/security/capability.c
+++ b/security/capability.c
@@ -181,7 +181,7 @@ static int cap_inode_follow_link(struct dentry *dentry,
return 0;
}
-static int cap_inode_permission(struct inode *inode, int mask)
+static int cap_inode_permission(struct inode *inode, int mask, unsigned flags)
{
return 0;
}
diff --git a/security/security.c b/security/security.c
index 47b8a447118f..7e34f98bf433 100644
--- a/security/security.c
+++ b/security/security.c
@@ -514,16 +514,14 @@ int security_inode_permission(struct inode *inode, int mask)
{
if (unlikely(IS_PRIVATE(inode)))
return 0;
- return security_ops->inode_permission(inode, mask);
+ return security_ops->inode_permission(inode, mask, 0);
}
int security_inode_exec_permission(struct inode *inode, unsigned int flags)
{
if (unlikely(IS_PRIVATE(inode)))
return 0;
- if (flags)
- return -ECHILD;
- return security_ops->inode_permission(inode, MAY_EXEC);
+ return security_ops->inode_permission(inode, MAY_EXEC, flags);
}
int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 7a630a8a5cef..9a220be17a3f 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -2635,7 +2635,7 @@ static int selinux_inode_follow_link(struct dentry *dentry, struct nameidata *na
return dentry_has_perm(cred, NULL, dentry, FILE__READ);
}
-static int selinux_inode_permission(struct inode *inode, int mask)
+static int selinux_inode_permission(struct inode *inode, int mask, unsigned flags)
{
const struct cred *cred = current_cred();
struct common_audit_data ad;
@@ -2649,6 +2649,10 @@ static int selinux_inode_permission(struct inode *inode, int mask)
if (!mask)
return 0;
+ /* May be droppable after audit */
+ if (flags & IPERM_FLAG_RCU)
+ return -ECHILD;
+
COMMON_AUDIT_DATA_INIT(&ad, FS);
ad.u.fs.inode = inode;
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 23c7a6d0c80c..42fcb47747a3 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -686,7 +686,7 @@ static int smack_inode_rename(struct inode *old_inode,
*
* Returns 0 if access is permitted, -EACCES otherwise
*/
-static int smack_inode_permission(struct inode *inode, int mask)
+static int smack_inode_permission(struct inode *inode, int mask, unsigned flags)
{
struct smk_audit_info ad;
@@ -696,6 +696,10 @@ static int smack_inode_permission(struct inode *inode, int mask)
*/
if (mask == 0)
return 0;
+
+ /* May be droppable after audit */
+ if (flags & IPERM_FLAG_RCU)
+ return -ECHILD;
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_FS);
smk_ad_setfield_u_fs_inode(&ad, inode);
return smk_curacc(smk_of_inode(inode), mask, &ad);