diff options
Diffstat (limited to 'security/selinux/hooks.c')
| -rw-r--r-- | security/selinux/hooks.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index d56a82967d5e..ffa5a642629a 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -2861,11 +2861,23 @@ static int selinux_inode_readlink(struct dentry *dentry) return dentry_has_perm(cred, dentry, FILE__READ); } -static int selinux_inode_follow_link(struct dentry *dentry) +static int selinux_inode_follow_link(struct dentry *dentry, struct inode *inode, + bool rcu) { const struct cred *cred = current_cred(); + struct common_audit_data ad; + struct inode_security_struct *isec; + u32 sid; - return dentry_has_perm(cred, dentry, FILE__READ); + validate_creds(cred); + + ad.type = LSM_AUDIT_DATA_DENTRY; + ad.u.dentry = dentry; + sid = cred_sid(cred); + isec = inode->i_security; + + return avc_has_perm_flags(sid, isec->sid, isec->sclass, FILE__READ, &ad, + rcu ? MAY_NOT_BLOCK : 0); } static noinline int audit_inode_permission(struct inode *inode, |