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security: Add hook to invalidate inode security labels

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Add a hook to invalidate an inode's security label when the cached
information becomes invalid.

Add the new hook in selinux: set a flag when a security label becomes
invalid.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: James Morris <james.l.morris@oracle.com>
Acked-by:  Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Paul Moore <pmoore@redhat.com>
This commit is contained in:
Andreas Gruenbacher
2015-12-24 11:09:40 -05:00
committed by Paul Moore
parent 83da53c5a3
commit 6f3be9f562
5 changed files with 45 additions and 10 deletions
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5
include/linux/security.h
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@@ -353,6 +353,7 @@ int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
void security_release_secctx(char *secdata, u32 seclen);
void security_inode_invalidate_secctx(struct inode *inode);
int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
@@ -1093,6 +1094,10 @@ static inline void security_release_secctx(char *secdata, u32 seclen)
{
}
static inline void security_inode_invalidate_secctx(struct inode *inode)
{
}
static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
{
return -EOPNOTSUPP;