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Make Smack operate on smack_known struct where it still used char*
Smack used to use a mix of smack_known struct and char* throughout its APIs and implementation. This patch unifies the behaviour and makes it store and operate exclusively on smack_known struct pointers when managing labels. Signed-off-by: Lukasz Pawelczyk <l.pawelczyk@samsung.com> Conflicts: security/smack/smack_access.c security/smack/smack_lsm.c
This commit is contained in:
Lukasz Pawelczyk
Casey Schaufler
parent
d01757904d
commit
21c7eae21a
@ -71,11 +71,11 @@ struct smack_known {
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#define SMK_CIPSOLEN 24
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struct superblock_smack {
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char *smk_root;
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char *smk_floor;
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char *smk_hat;
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char *smk_default;
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int smk_initialized;
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struct smack_known *smk_root;
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struct smack_known *smk_floor;
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struct smack_known *smk_hat;
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struct smack_known *smk_default;
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int smk_initialized;
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};
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struct socket_smack {
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@ -88,7 +88,7 @@ struct socket_smack {
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* Inode smack data
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*/
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struct inode_smack {
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char *smk_inode; /* label of the fso */
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struct smack_known *smk_inode; /* label of the fso */
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struct smack_known *smk_task; /* label of the task */
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struct smack_known *smk_mmap; /* label of the mmap domain */
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struct mutex smk_lock; /* initialization lock */
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@ -112,7 +112,7 @@ struct task_smack {
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struct smack_rule {
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struct list_head list;
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struct smack_known *smk_subject;
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char *smk_object;
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struct smack_known *smk_object;
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int smk_access;
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};
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@ -123,7 +123,7 @@ struct smk_netlbladdr {
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struct list_head list;
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struct sockaddr_in smk_host; /* network address */
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struct in_addr smk_mask; /* network mask */
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char *smk_label; /* label */
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struct smack_known *smk_label; /* label */
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};
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/*
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@ -227,23 +227,23 @@ struct smk_audit_info {
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/*
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* These functions are in smack_lsm.c
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*/
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struct inode_smack *new_inode_smack(char *);
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struct inode_smack *new_inode_smack(struct smack_known *);
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/*
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* These functions are in smack_access.c
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*/
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int smk_access_entry(char *, char *, struct list_head *);
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int smk_access(struct smack_known *, char *, int, struct smk_audit_info *);
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int smk_tskacc(struct task_smack *, char *, u32, struct smk_audit_info *);
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int smk_curacc(char *, u32, struct smk_audit_info *);
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int smk_access(struct smack_known *, struct smack_known *,
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int, struct smk_audit_info *);
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int smk_tskacc(struct task_smack *, struct smack_known *,
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u32, struct smk_audit_info *);
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int smk_curacc(struct smack_known *, u32, struct smk_audit_info *);
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struct smack_known *smack_from_secid(const u32);
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char *smk_parse_smack(const char *string, int len);
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int smk_netlbl_mls(int, char *, struct netlbl_lsm_secattr *, int);
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char *smk_import(const char *, int);
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struct smack_known *smk_import_entry(const char *, int);
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void smk_insert_entry(struct smack_known *skp);
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struct smack_known *smk_find_entry(const char *);
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u32 smack_to_secid(const char *);
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/*
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* Shared data.
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@ -253,7 +253,7 @@ extern int smack_cipso_mapped;
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extern struct smack_known *smack_net_ambient;
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extern struct smack_known *smack_onlycap;
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extern struct smack_known *smack_syslog_label;
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extern const char *smack_cipso_option;
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extern struct smack_known smack_cipso_option;
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extern int smack_ptrace_rule;
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extern struct smack_known smack_known_floor;
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@ -282,9 +282,9 @@ static inline int smk_inode_transmutable(const struct inode *isp)
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}
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/*
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* Present a pointer to the smack label in an inode blob.
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* Present a pointer to the smack label entry in an inode blob.
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*/
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static inline char *smk_of_inode(const struct inode *isp)
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static inline struct smack_known *smk_of_inode(const struct inode *isp)
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{
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struct inode_smack *sip = isp->i_security;
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return sip->smk_inode;
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@ -94,7 +94,7 @@ int smk_access_entry(char *subject_label, char *object_label,
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struct smack_rule *srp;
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list_for_each_entry_rcu(srp, rule_list, list) {
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if (srp->smk_object == object_label &&
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if (srp->smk_object->smk_known == object_label &&
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srp->smk_subject->smk_known == subject_label) {
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may = srp->smk_access;
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break;
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@ -111,8 +111,8 @@ int smk_access_entry(char *subject_label, char *object_label,
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/**
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* smk_access - determine if a subject has a specific access to an object
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* @subject_known: a pointer to the subject's Smack label entry
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* @object_label: a pointer to the object's Smack label
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* @subject: a pointer to the subject's Smack label entry
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* @object: a pointer to the object's Smack label entry
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* @request: the access requested, in "MAY" format
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* @a : a pointer to the audit data
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*
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@ -122,8 +122,8 @@ int smk_access_entry(char *subject_label, char *object_label,
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*
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* Smack labels are shared on smack_list
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*/
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int smk_access(struct smack_known *subject_known, char *object_label,
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int request, struct smk_audit_info *a)
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int smk_access(struct smack_known *subject, struct smack_known *object,
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int request, struct smk_audit_info *a)
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{
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int may = MAY_NOT;
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int rc = 0;
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@ -133,7 +133,7 @@ int smk_access(struct smack_known *subject_known, char *object_label,
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*
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* A star subject can't access any object.
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*/
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if (subject_known == &smack_known_star) {
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if (subject == &smack_known_star) {
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rc = -EACCES;
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goto out_audit;
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}
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@ -142,28 +142,28 @@ int smk_access(struct smack_known *subject_known, char *object_label,
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* Tasks cannot be assigned the internet label.
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* An internet subject can access any object.
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*/
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if (object_label == smack_known_web.smk_known ||
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subject_known == &smack_known_web)
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if (object == &smack_known_web ||
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subject == &smack_known_web)
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goto out_audit;
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/*
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* A star object can be accessed by any subject.
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*/
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if (object_label == smack_known_star.smk_known)
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if (object == &smack_known_star)
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goto out_audit;
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/*
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* An object can be accessed in any way by a subject
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* with the same label.
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*/
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if (subject_known->smk_known == object_label)
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if (subject->smk_known == object->smk_known)
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goto out_audit;
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/*
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* A hat subject can read any object.
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* A floor object can be read by any subject.
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*/
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if ((request & MAY_ANYREAD) == request) {
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if (object_label == smack_known_floor.smk_known)
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if (object == &smack_known_floor)
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goto out_audit;
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if (subject_known == &smack_known_hat)
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if (subject == &smack_known_hat)
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goto out_audit;
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}
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/*
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@ -174,8 +174,8 @@ int smk_access(struct smack_known *subject_known, char *object_label,
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* indicates there is no entry for this pair.
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*/
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rcu_read_lock();
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may = smk_access_entry(subject_known->smk_known, object_label,
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&subject_known->smk_rules);
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may = smk_access_entry(subject->smk_known, object->smk_known,
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&subject->smk_rules);
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rcu_read_unlock();
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if (may <= 0 || (request & may) != request) {
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@ -195,8 +195,8 @@ int smk_access(struct smack_known *subject_known, char *object_label,
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out_audit:
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#ifdef CONFIG_AUDIT
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if (a)
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smack_log(subject_known->smk_known, object_label, request,
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rc, a);
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smack_log(subject->smk_known, object->smk_known,
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request, rc, a);
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#endif
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return rc;
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@ -204,8 +204,8 @@ out_audit:
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/**
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* smk_tskacc - determine if a task has a specific access to an object
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* @tsp: a pointer to the subject task
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* @obj_label: a pointer to the object's Smack label
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* @tsp: a pointer to the subject's task
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* @obj_known: a pointer to the object's label entry
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* @mode: the access requested, in "MAY" format
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* @a : common audit data
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*
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@ -214,24 +214,25 @@ out_audit:
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* non zero otherwise. It allows that the task may have the capability
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* to override the rules.
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*/
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int smk_tskacc(struct task_smack *subject, char *obj_label,
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int smk_tskacc(struct task_smack *tsp, struct smack_known *obj_known,
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u32 mode, struct smk_audit_info *a)
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{
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struct smack_known *skp = smk_of_task(subject);
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struct smack_known *sbj_known = smk_of_task(tsp);
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int may;
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int rc;
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/*
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* Check the global rule list
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*/
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rc = smk_access(skp, obj_label, mode, NULL);
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rc = smk_access(sbj_known, obj_known, mode, NULL);
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if (rc >= 0) {
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/*
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* If there is an entry in the task's rule list
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* it can further restrict access.
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*/
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may = smk_access_entry(skp->smk_known, obj_label,
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&subject->smk_rules);
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may = smk_access_entry(sbj_known->smk_known,
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obj_known->smk_known,
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&tsp->smk_rules);
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if (may < 0)
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goto out_audit;
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if ((mode & may) == mode)
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@ -248,14 +249,15 @@ int smk_tskacc(struct task_smack *subject, char *obj_label,
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out_audit:
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#ifdef CONFIG_AUDIT
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if (a)
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smack_log(skp->smk_known, obj_label, mode, rc, a);
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smack_log(sbj_known->smk_known, obj_known->smk_known,
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mode, rc, a);
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#endif
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return rc;
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}
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/**
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* smk_curacc - determine if current has a specific access to an object
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* @obj_label: a pointer to the object's Smack label
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* @obj_known: a pointer to the object's Smack label entry
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* @mode: the access requested, in "MAY" format
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* @a : common audit data
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*
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@ -264,11 +266,12 @@ out_audit:
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* non zero otherwise. It allows that current may have the capability
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* to override the rules.
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*/
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int smk_curacc(char *obj_label, u32 mode, struct smk_audit_info *a)
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int smk_curacc(struct smack_known *obj_known,
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u32 mode, struct smk_audit_info *a)
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{
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struct task_smack *tsp = current_security();
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return smk_tskacc(tsp, obj_label, mode, a);
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return smk_tskacc(tsp, obj_known, mode, a);
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}
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#ifdef CONFIG_AUDIT
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@ -561,27 +564,6 @@ unlockout:
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return skp;
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}
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/**
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* smk_import - import a smack label
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* @string: a text string that might be a Smack label
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* @len: the maximum size, or zero if it is NULL terminated.
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*
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* Returns a pointer to the label in the label list that
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* matches the passed string, adding it if necessary.
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*/
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char *smk_import(const char *string, int len)
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{
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struct smack_known *skp;
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/* labels cannot begin with a '-' */
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if (string[0] == '-')
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return NULL;
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skp = smk_import_entry(string, len);
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if (skp == NULL)
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return NULL;
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return skp->smk_known;
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}
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/**
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* smack_from_secid - find the Smack label associated with a secid
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* @secid: an integer that might be associated with a Smack label
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@ -608,19 +590,3 @@ struct smack_known *smack_from_secid(const u32 secid)
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rcu_read_unlock();
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return &smack_known_invalid;
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}
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/**
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* smack_to_secid - find the secid associated with a Smack label
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* @smack: the Smack label
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*
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* Returns the appropriate secid if there is one,
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* otherwise 0
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*/
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u32 smack_to_secid(const char *smack)
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{
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struct smack_known *skp = smk_find_entry(smack);
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if (skp == NULL)
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return 0;
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return skp->smk_secid;
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}
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@ -78,8 +78,8 @@ static void smk_bu_mode(int mode, char *s)
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#endif
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#ifdef CONFIG_SECURITY_SMACK_BRINGUP
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static int smk_bu_note(char *note, struct smack_known *sskp, char *osp,
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int mode, int rc)
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static int smk_bu_note(char *note, struct smack_known *sskp,
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struct smack_known *oskp, int mode, int rc)
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{
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char acc[SMK_NUM_ACCESS_TYPE + 1];
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@ -88,15 +88,16 @@ static int smk_bu_note(char *note, struct smack_known *sskp, char *osp,
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smk_bu_mode(mode, acc);
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pr_info("Smack Bringup: (%s %s %s) %s\n",
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sskp->smk_known, osp, acc, note);
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sskp->smk_known, oskp->smk_known, acc, note);
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return 0;
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}
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#else
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#define smk_bu_note(note, sskp, osp, mode, RC) (RC)
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#define smk_bu_note(note, sskp, oskp, mode, RC) (RC)
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#endif
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#ifdef CONFIG_SECURITY_SMACK_BRINGUP
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static int smk_bu_current(char *note, char *osp, int mode, int rc)
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static int smk_bu_current(char *note, struct smack_known *oskp,
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int mode, int rc)
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{
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struct task_smack *tsp = current_security();
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char acc[SMK_NUM_ACCESS_TYPE + 1];
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@ -106,11 +107,12 @@ static int smk_bu_current(char *note, char *osp, int mode, int rc)
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smk_bu_mode(mode, acc);
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pr_info("Smack Bringup: (%s %s %s) %s %s\n",
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tsp->smk_task->smk_known, osp, acc, current->comm, note);
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tsp->smk_task->smk_known, oskp->smk_known,
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acc, current->comm, note);
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return 0;
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}
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#else
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#define smk_bu_current(note, osp, mode, RC) (RC)
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#define smk_bu_current(note, oskp, mode, RC) (RC)
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#endif
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#ifdef CONFIG_SECURITY_SMACK_BRINGUP
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@ -144,7 +146,7 @@ static int smk_bu_inode(struct inode *inode, int mode, int rc)
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smk_bu_mode(mode, acc);
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pr_info("Smack Bringup: (%s %s %s) inode=(%s %ld) %s\n",
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tsp->smk_task->smk_known, smk_of_inode(inode), acc,
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tsp->smk_task->smk_known, smk_of_inode(inode)->smk_known, acc,
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inode->i_sb->s_id, inode->i_ino, current->comm);
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return 0;
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}
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@ -188,7 +190,7 @@ static int smk_bu_credfile(const struct cred *cred, struct file *file,
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smk_bu_mode(mode, acc);
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pr_info("Smack Bringup: (%s %s %s) file=(%s %ld %s) %s\n",
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sskp->smk_known, smk_of_inode(inode), acc,
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sskp->smk_known, smk_of_inode(inode)->smk_known, acc,
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inode->i_sb->s_id, inode->i_ino, file->f_dentry->d_name.name,
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current->comm);
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return 0;
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@ -230,11 +232,11 @@ static struct smack_known *smk_fetch(const char *name, struct inode *ip,
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/**
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* new_inode_smack - allocate an inode security blob
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* @smack: a pointer to the Smack label to use in the blob
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* @skp: a pointer to the Smack label entry to use in the blob
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*
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* Returns the new blob or NULL if there's no memory available
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*/
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struct inode_smack *new_inode_smack(char *smack)
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struct inode_smack *new_inode_smack(struct smack_known *skp)
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{
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struct inode_smack *isp;
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@ -242,7 +244,7 @@ struct inode_smack *new_inode_smack(char *smack)
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if (isp == NULL)
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return NULL;
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isp->smk_inode = smack;
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isp->smk_inode = skp;
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isp->smk_flags = 0;
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mutex_init(&isp->smk_lock);
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@ -321,20 +323,20 @@ static inline unsigned int smk_ptrace_mode(unsigned int mode)
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/**
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* smk_ptrace_rule_check - helper for ptrace access
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* @tracer: tracer process
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* @tracee_label: label of the process that's about to be traced,
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* the pointer must originate from smack structures
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* @tracee_known: label entry of the process that's about to be traced
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* @mode: ptrace attachment mode (PTRACE_MODE_*)
|
||||
* @func: name of the function that called us, used for audit
|
||||
*
|
||||
* Returns 0 on access granted, -error on error
|
||||
*/
|
||||
static int smk_ptrace_rule_check(struct task_struct *tracer, char *tracee_label,
|
||||
static int smk_ptrace_rule_check(struct task_struct *tracer,
|
||||
struct smack_known *tracee_known,
|
||||
unsigned int mode, const char *func)
|
||||
{
|
||||
int rc;
|
||||
struct smk_audit_info ad, *saip = NULL;
|
||||
struct task_smack *tsp;
|
||||
struct smack_known *skp;
|
||||
struct smack_known *tracer_known;
|
||||
|
||||
if ((mode & PTRACE_MODE_NOAUDIT) == 0) {
|
||||
smk_ad_init(&ad, func, LSM_AUDIT_DATA_TASK);
|
||||
@ -343,12 +345,12 @@ static int smk_ptrace_rule_check(struct task_struct *tracer, char *tracee_label,
|
||||
}
|
||||
|
||||
tsp = task_security(tracer);
|
||||
skp = smk_of_task(tsp);
|
||||
tracer_known = smk_of_task(tsp);
|
||||
|
||||
if ((mode & PTRACE_MODE_ATTACH) &&
|
||||
(smack_ptrace_rule == SMACK_PTRACE_EXACT ||
|
||||
smack_ptrace_rule == SMACK_PTRACE_DRACONIAN)) {
|
||||
if (skp->smk_known == tracee_label)
|
||||
if (tracer_known->smk_known == tracee_known->smk_known)
|
||||
rc = 0;
|
||||
else if (smack_ptrace_rule == SMACK_PTRACE_DRACONIAN)
|
||||
rc = -EACCES;
|
||||
@ -358,13 +360,15 @@ static int smk_ptrace_rule_check(struct task_struct *tracer, char *tracee_label,
|
||||
rc = -EACCES;
|
||||
|
||||
if (saip)
|
||||
smack_log(skp->smk_known, tracee_label, 0, rc, saip);
|
||||
smack_log(tracer_known->smk_known,
|
||||
tracee_known->smk_known,
|
||||
0, rc, saip);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
/* In case of rule==SMACK_PTRACE_DEFAULT or mode==PTRACE_MODE_READ */
|
||||
rc = smk_tskacc(tsp, tracee_label, smk_ptrace_mode(mode), saip);
|
||||
rc = smk_tskacc(tsp, tracee_known, smk_ptrace_mode(mode), saip);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -393,7 +397,7 @@ static int smack_ptrace_access_check(struct task_struct *ctp, unsigned int mode)
|
||||
|
||||
skp = smk_of_task(task_security(ctp));
|
||||
|
||||
rc = smk_ptrace_rule_check(current, skp->smk_known, mode, __func__);
|
||||
rc = smk_ptrace_rule_check(current, skp, mode, __func__);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -416,8 +420,7 @@ static int smack_ptrace_traceme(struct task_struct *ptp)
|
||||
|
||||
skp = smk_of_task(current_security());
|
||||
|
||||
rc = smk_ptrace_rule_check(ptp, skp->smk_known,
|
||||
PTRACE_MODE_ATTACH, __func__);
|
||||
rc = smk_ptrace_rule_check(ptp, skp, PTRACE_MODE_ATTACH, __func__);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -461,10 +464,10 @@ static int smack_sb_alloc_security(struct super_block *sb)
|
||||
if (sbsp == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
sbsp->smk_root = smack_known_floor.smk_known;
|
||||
sbsp->smk_default = smack_known_floor.smk_known;
|
||||
sbsp->smk_floor = smack_known_floor.smk_known;
|
||||
sbsp->smk_hat = smack_known_hat.smk_known;
|
||||
sbsp->smk_root = &smack_known_floor;
|
||||
sbsp->smk_default = &smack_known_floor;
|
||||
sbsp->smk_floor = &smack_known_floor;
|
||||
sbsp->smk_hat = &smack_known_hat;
|
||||
/*
|
||||
* smk_initialized will be zero from kzalloc.
|
||||
*/
|
||||
@ -548,7 +551,6 @@ static int smack_sb_kern_mount(struct super_block *sb, int flags, void *data)
|
||||
struct smack_known *skp;
|
||||
char *op;
|
||||
char *commap;
|
||||
char *nsp;
|
||||
int transmute = 0;
|
||||
int specified = 0;
|
||||
|
||||
@ -564,38 +566,38 @@ static int smack_sb_kern_mount(struct super_block *sb, int flags, void *data)
|
||||
|
||||
if (strncmp(op, SMK_FSHAT, strlen(SMK_FSHAT)) == 0) {
|
||||
op += strlen(SMK_FSHAT);
|
||||
nsp = smk_import(op, 0);
|
||||
if (nsp != NULL) {
|
||||
sp->smk_hat = nsp;
|
||||
skp = smk_import_entry(op, 0);
|
||||
if (skp != NULL) {
|
||||
sp->smk_hat = skp;
|
||||
specified = 1;
|
||||
}
|
||||
} else if (strncmp(op, SMK_FSFLOOR, strlen(SMK_FSFLOOR)) == 0) {
|
||||
op += strlen(SMK_FSFLOOR);
|
||||
nsp = smk_import(op, 0);
|
||||
if (nsp != NULL) {
|
||||
sp->smk_floor = nsp;
|
||||
skp = smk_import_entry(op, 0);
|
||||
if (skp != NULL) {
|
||||
sp->smk_floor = skp;
|
||||
specified = 1;
|
||||
}
|
||||
} else if (strncmp(op, SMK_FSDEFAULT,
|
||||
strlen(SMK_FSDEFAULT)) == 0) {
|
||||
op += strlen(SMK_FSDEFAULT);
|
||||
nsp = smk_import(op, 0);
|
||||
if (nsp != NULL) {
|
||||
sp->smk_default = nsp;
|
||||
skp = smk_import_entry(op, 0);
|
||||
if (skp != NULL) {
|
||||
sp->smk_default = skp;
|
||||
specified = 1;
|
||||
}
|
||||
} else if (strncmp(op, SMK_FSROOT, strlen(SMK_FSROOT)) == 0) {
|
||||
op += strlen(SMK_FSROOT);
|
||||
nsp = smk_import(op, 0);
|
||||
if (nsp != NULL) {
|
||||
sp->smk_root = nsp;
|
||||
skp = smk_import_entry(op, 0);
|
||||
if (skp != NULL) {
|
||||
sp->smk_root = skp;
|
||||
specified = 1;
|
||||
}
|
||||
} else if (strncmp(op, SMK_FSTRANS, strlen(SMK_FSTRANS)) == 0) {
|
||||
op += strlen(SMK_FSTRANS);
|
||||
nsp = smk_import(op, 0);
|
||||
if (nsp != NULL) {
|
||||
sp->smk_root = nsp;
|
||||
skp = smk_import_entry(op, 0);
|
||||
if (skp != NULL) {
|
||||
sp->smk_root = skp;
|
||||
transmute = 1;
|
||||
specified = 1;
|
||||
}
|
||||
@ -612,8 +614,8 @@ static int smack_sb_kern_mount(struct super_block *sb, int flags, void *data)
|
||||
* Unprivileged mounts get root and default from the caller.
|
||||
*/
|
||||
skp = smk_of_current();
|
||||
sp->smk_root = skp->smk_known;
|
||||
sp->smk_default = skp->smk_known;
|
||||
sp->smk_root = skp;
|
||||
sp->smk_default = skp;
|
||||
}
|
||||
/*
|
||||
* Initialize the root inode.
|
||||
@ -690,7 +692,7 @@ static int smack_bprm_set_creds(struct linux_binprm *bprm)
|
||||
tracer = ptrace_parent(current);
|
||||
if (likely(tracer != NULL))
|
||||
rc = smk_ptrace_rule_check(tracer,
|
||||
isp->smk_task->smk_known,
|
||||
isp->smk_task,
|
||||
PTRACE_MODE_ATTACH,
|
||||
__func__);
|
||||
rcu_read_unlock();
|
||||
@ -751,7 +753,7 @@ static int smack_inode_alloc_security(struct inode *inode)
|
||||
{
|
||||
struct smack_known *skp = smk_of_current();
|
||||
|
||||
inode->i_security = new_inode_smack(skp->smk_known);
|
||||
inode->i_security = new_inode_smack(skp);
|
||||
if (inode->i_security == NULL)
|
||||
return -ENOMEM;
|
||||
return 0;
|
||||
@ -786,8 +788,8 @@ static int smack_inode_init_security(struct inode *inode, struct inode *dir,
|
||||
{
|
||||
struct inode_smack *issp = inode->i_security;
|
||||
struct smack_known *skp = smk_of_current();
|
||||
char *isp = smk_of_inode(inode);
|
||||
char *dsp = smk_of_inode(dir);
|
||||
struct smack_known *isp = smk_of_inode(inode);
|
||||
struct smack_known *dsp = smk_of_inode(dir);
|
||||
int may;
|
||||
|
||||
if (name)
|
||||
@ -795,7 +797,8 @@ static int smack_inode_init_security(struct inode *inode, struct inode *dir,
|
||||
|
||||
if (value) {
|
||||
rcu_read_lock();
|
||||
may = smk_access_entry(skp->smk_known, dsp, &skp->smk_rules);
|
||||
may = smk_access_entry(skp->smk_known, dsp->smk_known,
|
||||
&skp->smk_rules);
|
||||
rcu_read_unlock();
|
||||
|
||||
/*
|
||||
@ -810,13 +813,13 @@ static int smack_inode_init_security(struct inode *inode, struct inode *dir,
|
||||
issp->smk_flags |= SMK_INODE_CHANGED;
|
||||
}
|
||||
|
||||
*value = kstrdup(isp, GFP_NOFS);
|
||||
*value = kstrdup(isp->smk_known, GFP_NOFS);
|
||||
if (*value == NULL)
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
if (len)
|
||||
*len = strlen(isp);
|
||||
*len = strlen(isp->smk_known);
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -832,7 +835,7 @@ static int smack_inode_init_security(struct inode *inode, struct inode *dir,
|
||||
static int smack_inode_link(struct dentry *old_dentry, struct inode *dir,
|
||||
struct dentry *new_dentry)
|
||||
{
|
||||
char *isp;
|
||||
struct smack_known *isp;
|
||||
struct smk_audit_info ad;
|
||||
int rc;
|
||||
|
||||
@ -939,7 +942,7 @@ static int smack_inode_rename(struct inode *old_inode,
|
||||
struct dentry *new_dentry)
|
||||
{
|
||||
int rc;
|
||||
char *isp;
|
||||
struct smack_known *isp;
|
||||
struct smk_audit_info ad;
|
||||
|
||||
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
|
||||
@ -1127,9 +1130,9 @@ static void smack_inode_post_setxattr(struct dentry *dentry, const char *name,
|
||||
if (strcmp(name, XATTR_NAME_SMACK) == 0) {
|
||||
skp = smk_import_entry(value, size);
|
||||
if (skp != NULL)
|
||||
isp->smk_inode = skp->smk_known;
|
||||
isp->smk_inode = skp;
|
||||
else
|
||||
isp->smk_inode = smack_known_invalid.smk_known;
|
||||
isp->smk_inode = &smack_known_invalid;
|
||||
} else if (strcmp(name, XATTR_NAME_SMACKEXEC) == 0) {
|
||||
skp = smk_import_entry(value, size);
|
||||
if (skp != NULL)
|
||||
@ -1238,14 +1241,14 @@ static int smack_inode_getsecurity(const struct inode *inode,
|
||||
struct socket *sock;
|
||||
struct super_block *sbp;
|
||||
struct inode *ip = (struct inode *)inode;
|
||||
char *isp;
|
||||
struct smack_known *isp;
|
||||
int ilen;
|
||||
int rc = 0;
|
||||
|
||||
if (strcmp(name, XATTR_SMACK_SUFFIX) == 0) {
|
||||
isp = smk_of_inode(inode);
|
||||
ilen = strlen(isp);
|
||||
*buffer = isp;
|
||||
ilen = strlen(isp->smk_known);
|
||||
*buffer = isp->smk_known;
|
||||
return ilen;
|
||||
}
|
||||
|
||||
@ -1263,15 +1266,15 @@ static int smack_inode_getsecurity(const struct inode *inode,
|
||||
ssp = sock->sk->sk_security;
|
||||
|
||||
if (strcmp(name, XATTR_SMACK_IPIN) == 0)
|
||||
isp = ssp->smk_in->smk_known;
|
||||
isp = ssp->smk_in;
|
||||
else if (strcmp(name, XATTR_SMACK_IPOUT) == 0)
|
||||
isp = ssp->smk_out->smk_known;
|
||||
isp = ssp->smk_out;
|
||||
else
|
||||
return -EOPNOTSUPP;
|
||||
|
||||
ilen = strlen(isp);
|
||||
ilen = strlen(isp->smk_known);
|
||||
if (rc == 0) {
|
||||
*buffer = isp;
|
||||
*buffer = isp->smk_known;
|
||||
rc = ilen;
|
||||
}
|
||||
|
||||
@ -1307,7 +1310,7 @@ static void smack_inode_getsecid(const struct inode *inode, u32 *secid)
|
||||
{
|
||||
struct inode_smack *isp = inode->i_security;
|
||||
|
||||
*secid = smack_to_secid(isp->smk_inode);
|
||||
*secid = isp->smk_inode->smk_secid;
|
||||
}
|
||||
|
||||
/*
|
||||
@ -1346,7 +1349,7 @@ static int smack_file_alloc_security(struct file *file)
|
||||
{
|
||||
struct smack_known *skp = smk_of_current();
|
||||
|
||||
file->f_security = skp->smk_known;
|
||||
file->f_security = skp;
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1474,7 +1477,7 @@ static int smack_mmap_file(struct file *file,
|
||||
struct smack_known *mkp;
|
||||
struct smack_rule *srp;
|
||||
struct task_smack *tsp;
|
||||
char *osmack;
|
||||
struct smack_known *okp;
|
||||
struct inode_smack *isp;
|
||||
int may;
|
||||
int mmay;
|
||||
@ -1500,18 +1503,19 @@ static int smack_mmap_file(struct file *file,
|
||||
* to that rule's object label.
|
||||
*/
|
||||
list_for_each_entry_rcu(srp, &skp->smk_rules, list) {
|
||||
osmack = srp->smk_object;
|
||||
okp = srp->smk_object;
|
||||
/*
|
||||
* Matching labels always allows access.
|
||||
*/
|
||||
if (mkp->smk_known == osmack)
|
||||
if (mkp->smk_known == okp->smk_known)
|
||||
continue;
|
||||
/*
|
||||
* If there is a matching local rule take
|
||||
* that into account as well.
|
||||
*/
|
||||
may = smk_access_entry(srp->smk_subject->smk_known, osmack,
|
||||
&tsp->smk_rules);
|
||||
may = smk_access_entry(srp->smk_subject->smk_known,
|
||||
okp->smk_known,
|
||||
&tsp->smk_rules);
|
||||
if (may == -ENOENT)
|
||||
may = srp->smk_access;
|
||||
else
|
||||
@ -1528,8 +1532,8 @@ static int smack_mmap_file(struct file *file,
|
||||
* If there isn't one a SMACK64MMAP subject
|
||||
* can't have as much access as current.
|
||||
*/
|
||||
mmay = smk_access_entry(mkp->smk_known, osmack,
|
||||
&mkp->smk_rules);
|
||||
mmay = smk_access_entry(mkp->smk_known, okp->smk_known,
|
||||
&mkp->smk_rules);
|
||||
if (mmay == -ENOENT) {
|
||||
rc = -EACCES;
|
||||
break;
|
||||
@ -1538,8 +1542,8 @@ static int smack_mmap_file(struct file *file,
|
||||
* If there is a local entry it modifies the
|
||||
* potential access, too.
|
||||
*/
|
||||
tmay = smk_access_entry(mkp->smk_known, osmack,
|
||||
&tsp->smk_rules);
|
||||
tmay = smk_access_entry(mkp->smk_known, okp->smk_known,
|
||||
&tsp->smk_rules);
|
||||
if (tmay != -ENOENT)
|
||||
mmay &= tmay;
|
||||
|
||||
@ -1570,7 +1574,7 @@ static int smack_file_set_fowner(struct file *file)
|
||||
{
|
||||
struct smack_known *skp = smk_of_current();
|
||||
|
||||
file->f_security = skp->smk_known;
|
||||
file->f_security = skp;
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1600,15 +1604,15 @@ static int smack_file_send_sigiotask(struct task_struct *tsk,
|
||||
file = container_of(fown, struct file, f_owner);
|
||||
|
||||
/* we don't log here as rc can be overriden */
|
||||
skp = smk_find_entry(file->f_security);
|
||||
rc = smk_access(skp, tkp->smk_known, MAY_WRITE, NULL);
|
||||
rc = smk_bu_note("sigiotask", skp, tkp->smk_known, MAY_WRITE, rc);
|
||||
skp = file->f_security;
|
||||
rc = smk_access(skp, tkp, MAY_WRITE, NULL);
|
||||
rc = smk_bu_note("sigiotask", skp, tkp, MAY_WRITE, rc);
|
||||
if (rc != 0 && has_capability(tsk, CAP_MAC_OVERRIDE))
|
||||
rc = 0;
|
||||
|
||||
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_TASK);
|
||||
smk_ad_setfield_u_tsk(&ad, tsk);
|
||||
smack_log(file->f_security, tkp->smk_known, MAY_WRITE, rc, &ad);
|
||||
smack_log(skp->smk_known, tkp->smk_known, MAY_WRITE, rc, &ad);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -1805,7 +1809,7 @@ static int smack_kernel_create_files_as(struct cred *new,
|
||||
struct inode_smack *isp = inode->i_security;
|
||||
struct task_smack *tsp = new->security;
|
||||
|
||||
tsp->smk_forked = smk_find_entry(isp->smk_inode);
|
||||
tsp->smk_forked = isp->smk_inode;
|
||||
tsp->smk_task = tsp->smk_forked;
|
||||
return 0;
|
||||
}
|
||||
@ -1827,7 +1831,7 @@ static int smk_curacc_on_task(struct task_struct *p, int access,
|
||||
|
||||
smk_ad_init(&ad, caller, LSM_AUDIT_DATA_TASK);
|
||||
smk_ad_setfield_u_tsk(&ad, p);
|
||||
rc = smk_curacc(skp->smk_known, access, &ad);
|
||||
rc = smk_curacc(skp, access, &ad);
|
||||
rc = smk_bu_task(p, access, rc);
|
||||
return rc;
|
||||
}
|
||||
@ -1992,7 +1996,7 @@ static int smack_task_kill(struct task_struct *p, struct siginfo *info,
|
||||
* can write the receiver.
|
||||
*/
|
||||
if (secid == 0) {
|
||||
rc = smk_curacc(tkp->smk_known, MAY_WRITE, &ad);
|
||||
rc = smk_curacc(tkp, MAY_WRITE, &ad);
|
||||
rc = smk_bu_task(p, MAY_WRITE, rc);
|
||||
return rc;
|
||||
}
|
||||
@ -2002,8 +2006,8 @@ static int smack_task_kill(struct task_struct *p, struct siginfo *info,
|
||||
* we can't take privilege into account.
|
||||
*/
|
||||
skp = smack_from_secid(secid);
|
||||
rc = smk_access(skp, tkp->smk_known, MAY_WRITE, &ad);
|
||||
rc = smk_bu_note("USB signal", skp, tkp->smk_known, MAY_WRITE, rc);
|
||||
rc = smk_access(skp, tkp, MAY_WRITE, &ad);
|
||||
rc = smk_bu_note("USB signal", skp, tkp, MAY_WRITE, rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -2038,7 +2042,7 @@ static void smack_task_to_inode(struct task_struct *p, struct inode *inode)
|
||||
struct inode_smack *isp = inode->i_security;
|
||||
struct smack_known *skp = smk_of_task(task_security(p));
|
||||
|
||||
isp->smk_inode = skp->smk_known;
|
||||
isp->smk_inode = skp;
|
||||
}
|
||||
|
||||
/*
|
||||
@ -2096,7 +2100,7 @@ static void smack_sk_free_security(struct sock *sk)
|
||||
*
|
||||
* Returns the label of the far end or NULL if it's not special.
|
||||
*/
|
||||
static char *smack_host_label(struct sockaddr_in *sip)
|
||||
static struct smack_known *smack_host_label(struct sockaddr_in *sip)
|
||||
{
|
||||
struct smk_netlbladdr *snp;
|
||||
struct in_addr *siap = &sip->sin_addr;
|
||||
@ -2113,7 +2117,7 @@ static char *smack_host_label(struct sockaddr_in *sip)
|
||||
if ((&snp->smk_host.sin_addr)->s_addr ==
|
||||
(siap->s_addr & (&snp->smk_mask)->s_addr)) {
|
||||
/* we have found the special CIPSO option */
|
||||
if (snp->smk_label == smack_cipso_option)
|
||||
if (snp->smk_label == &smack_cipso_option)
|
||||
return NULL;
|
||||
return snp->smk_label;
|
||||
}
|
||||
@ -2178,13 +2182,13 @@ static int smack_netlabel_send(struct sock *sk, struct sockaddr_in *sap)
|
||||
struct smack_known *skp;
|
||||
int rc;
|
||||
int sk_lbl;
|
||||
char *hostsp;
|
||||
struct smack_known *hkp;
|
||||
struct socket_smack *ssp = sk->sk_security;
|
||||
struct smk_audit_info ad;
|
||||
|
||||
rcu_read_lock();
|
||||
hostsp = smack_host_label(sap);
|
||||
if (hostsp != NULL) {
|
||||
hkp = smack_host_label(sap);
|
||||
if (hkp != NULL) {
|
||||
#ifdef CONFIG_AUDIT
|
||||
struct lsm_network_audit net;
|
||||
|
||||
@ -2195,8 +2199,8 @@ static int smack_netlabel_send(struct sock *sk, struct sockaddr_in *sap)
|
||||
#endif
|
||||
sk_lbl = SMACK_UNLABELED_SOCKET;
|
||||
skp = ssp->smk_out;
|
||||
rc = smk_access(skp, hostsp, MAY_WRITE, &ad);
|
||||
rc = smk_bu_note("IPv4 host check", skp, hostsp, MAY_WRITE, rc);
|
||||
rc = smk_access(skp, hkp, MAY_WRITE, &ad);
|
||||
rc = smk_bu_note("IPv4 host check", skp, hkp, MAY_WRITE, rc);
|
||||
} else {
|
||||
sk_lbl = SMACK_CIPSO_SOCKET;
|
||||
rc = 0;
|
||||
@ -2297,7 +2301,7 @@ static int smk_ipv6_port_check(struct sock *sk, struct sockaddr_in6 *address,
|
||||
struct socket_smack *ssp = sk->sk_security;
|
||||
struct smack_known *skp;
|
||||
unsigned short port = 0;
|
||||
char *object;
|
||||
struct smack_known *object;
|
||||
struct smk_audit_info ad;
|
||||
int rc;
|
||||
#ifdef CONFIG_AUDIT
|
||||
@ -2306,10 +2310,10 @@ static int smk_ipv6_port_check(struct sock *sk, struct sockaddr_in6 *address,
|
||||
|
||||
if (act == SMK_RECEIVING) {
|
||||
skp = smack_net_ambient;
|
||||
object = ssp->smk_in->smk_known;
|
||||
object = ssp->smk_in;
|
||||
} else {
|
||||
skp = ssp->smk_out;
|
||||
object = smack_net_ambient->smk_known;
|
||||
object = smack_net_ambient;
|
||||
}
|
||||
|
||||
/*
|
||||
@ -2336,7 +2340,7 @@ static int smk_ipv6_port_check(struct sock *sk, struct sockaddr_in6 *address,
|
||||
list_for_each_entry(spp, &smk_ipv6_port_list, list) {
|
||||
if (spp->smk_port != port)
|
||||
continue;
|
||||
object = spp->smk_in->smk_known;
|
||||
object = spp->smk_in;
|
||||
if (act == SMK_CONNECTING)
|
||||
ssp->smk_packet = spp->smk_out;
|
||||
break;
|
||||
@ -2387,7 +2391,7 @@ static int smack_inode_setsecurity(struct inode *inode, const char *name,
|
||||
return -EINVAL;
|
||||
|
||||
if (strcmp(name, XATTR_SMACK_SUFFIX) == 0) {
|
||||
nsp->smk_inode = skp->smk_known;
|
||||
nsp->smk_inode = skp;
|
||||
nsp->smk_flags |= SMK_INODE_INSTANT;
|
||||
return 0;
|
||||
}
|
||||
@ -2529,7 +2533,7 @@ static int smack_msg_msg_alloc_security(struct msg_msg *msg)
|
||||
{
|
||||
struct smack_known *skp = smk_of_current();
|
||||
|
||||
msg->security = skp->smk_known;
|
||||
msg->security = skp;
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -2550,9 +2554,9 @@ static void smack_msg_msg_free_security(struct msg_msg *msg)
|
||||
*
|
||||
* Returns a pointer to the smack value
|
||||
*/
|
||||
static char *smack_of_shm(struct shmid_kernel *shp)
|
||||
static struct smack_known *smack_of_shm(struct shmid_kernel *shp)
|
||||
{
|
||||
return (char *)shp->shm_perm.security;
|
||||
return (struct smack_known *)shp->shm_perm.security;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -2566,7 +2570,7 @@ static int smack_shm_alloc_security(struct shmid_kernel *shp)
|
||||
struct kern_ipc_perm *isp = &shp->shm_perm;
|
||||
struct smack_known *skp = smk_of_current();
|
||||
|
||||
isp->security = skp->smk_known;
|
||||
isp->security = skp;
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -2592,7 +2596,7 @@ static void smack_shm_free_security(struct shmid_kernel *shp)
|
||||
*/
|
||||
static int smk_curacc_shm(struct shmid_kernel *shp, int access)
|
||||
{
|
||||
char *ssp = smack_of_shm(shp);
|
||||
struct smack_known *ssp = smack_of_shm(shp);
|
||||
struct smk_audit_info ad;
|
||||
int rc;
|
||||
|
||||
@ -2677,9 +2681,9 @@ static int smack_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr,
|
||||
*
|
||||
* Returns a pointer to the smack value
|
||||
*/
|
||||
static char *smack_of_sem(struct sem_array *sma)
|
||||
static struct smack_known *smack_of_sem(struct sem_array *sma)
|
||||
{
|
||||
return (char *)sma->sem_perm.security;
|
||||
return (struct smack_known *)sma->sem_perm.security;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -2693,7 +2697,7 @@ static int smack_sem_alloc_security(struct sem_array *sma)
|
||||
struct kern_ipc_perm *isp = &sma->sem_perm;
|
||||
struct smack_known *skp = smk_of_current();
|
||||
|
||||
isp->security = skp->smk_known;
|
||||
isp->security = skp;
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -2719,7 +2723,7 @@ static void smack_sem_free_security(struct sem_array *sma)
|
||||
*/
|
||||
static int smk_curacc_sem(struct sem_array *sma, int access)
|
||||
{
|
||||
char *ssp = smack_of_sem(sma);
|
||||
struct smack_known *ssp = smack_of_sem(sma);
|
||||
struct smk_audit_info ad;
|
||||
int rc;
|
||||
|
||||
@ -2815,7 +2819,7 @@ static int smack_msg_queue_alloc_security(struct msg_queue *msq)
|
||||
struct kern_ipc_perm *kisp = &msq->q_perm;
|
||||
struct smack_known *skp = smk_of_current();
|
||||
|
||||
kisp->security = skp->smk_known;
|
||||
kisp->security = skp;
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -2836,11 +2840,11 @@ static void smack_msg_queue_free_security(struct msg_queue *msq)
|
||||
* smack_of_msq - the smack pointer for the msq
|
||||
* @msq: the object
|
||||
*
|
||||
* Returns a pointer to the smack value
|
||||
* Returns a pointer to the smack label entry
|
||||
*/
|
||||
static char *smack_of_msq(struct msg_queue *msq)
|
||||
static struct smack_known *smack_of_msq(struct msg_queue *msq)
|
||||
{
|
||||
return (char *)msq->q_perm.security;
|
||||
return (struct smack_known *)msq->q_perm.security;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -2852,7 +2856,7 @@ static char *smack_of_msq(struct msg_queue *msq)
|
||||
*/
|
||||
static int smk_curacc_msq(struct msg_queue *msq, int access)
|
||||
{
|
||||
char *msp = smack_of_msq(msq);
|
||||
struct smack_known *msp = smack_of_msq(msq);
|
||||
struct smk_audit_info ad;
|
||||
int rc;
|
||||
|
||||
@ -2955,7 +2959,7 @@ static int smack_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
|
||||
*/
|
||||
static int smack_ipc_permission(struct kern_ipc_perm *ipp, short flag)
|
||||
{
|
||||
char *isp = ipp->security;
|
||||
struct smack_known *iskp = ipp->security;
|
||||
int may = smack_flags_to_may(flag);
|
||||
struct smk_audit_info ad;
|
||||
int rc;
|
||||
@ -2964,8 +2968,8 @@ static int smack_ipc_permission(struct kern_ipc_perm *ipp, short flag)
|
||||
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_IPC);
|
||||
ad.a.u.ipc_id = ipp->id;
|
||||
#endif
|
||||
rc = smk_curacc(isp, may, &ad);
|
||||
rc = smk_bu_current("svipc", isp, may, rc);
|
||||
rc = smk_curacc(iskp, may, &ad);
|
||||
rc = smk_bu_current("svipc", iskp, may, rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -2976,9 +2980,9 @@ static int smack_ipc_permission(struct kern_ipc_perm *ipp, short flag)
|
||||
*/
|
||||
static void smack_ipc_getsecid(struct kern_ipc_perm *ipp, u32 *secid)
|
||||
{
|
||||
char *smack = ipp->security;
|
||||
struct smack_known *iskp = ipp->security;
|
||||
|
||||
*secid = smack_to_secid(smack);
|
||||
*secid = iskp->smk_secid;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -2995,7 +2999,7 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
|
||||
struct inode_smack *isp;
|
||||
struct smack_known *skp;
|
||||
struct smack_known *ckp = smk_of_current();
|
||||
char *final;
|
||||
struct smack_known *final;
|
||||
char trattr[TRANS_TRUE_SIZE];
|
||||
int transflag = 0;
|
||||
int rc;
|
||||
@ -3035,8 +3039,8 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
|
||||
* so there's no opportunity to set the mount
|
||||
* options.
|
||||
*/
|
||||
sbsp->smk_root = smack_known_star.smk_known;
|
||||
sbsp->smk_default = smack_known_star.smk_known;
|
||||
sbsp->smk_root = &smack_known_star;
|
||||
sbsp->smk_default = &smack_known_star;
|
||||
}
|
||||
isp->smk_inode = sbsp->smk_root;
|
||||
isp->smk_flags |= SMK_INODE_INSTANT;
|
||||
@ -3066,7 +3070,7 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
|
||||
*
|
||||
* Cgroupfs is special
|
||||
*/
|
||||
final = smack_known_star.smk_known;
|
||||
final = &smack_known_star;
|
||||
break;
|
||||
case DEVPTS_SUPER_MAGIC:
|
||||
/*
|
||||
@ -3074,7 +3078,7 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
|
||||
* Programs that change smack have to treat the
|
||||
* pty with respect.
|
||||
*/
|
||||
final = ckp->smk_known;
|
||||
final = ckp;
|
||||
break;
|
||||
case PROC_SUPER_MAGIC:
|
||||
/*
|
||||
@ -3088,7 +3092,7 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
|
||||
* but watch out, because they're volitile,
|
||||
* getting recreated on every reboot.
|
||||
*/
|
||||
final = smack_known_star.smk_known;
|
||||
final = &smack_known_star;
|
||||
/*
|
||||
* No break.
|
||||
*
|
||||
@ -3107,7 +3111,7 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
|
||||
* UNIX domain sockets use lower level socket data.
|
||||
*/
|
||||
if (S_ISSOCK(inode->i_mode)) {
|
||||
final = smack_known_star.smk_known;
|
||||
final = &smack_known_star;
|
||||
break;
|
||||
}
|
||||
/*
|
||||
@ -3124,7 +3128,7 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
|
||||
dp = dget(opt_dentry);
|
||||
skp = smk_fetch(XATTR_NAME_SMACK, inode, dp);
|
||||
if (skp != NULL)
|
||||
final = skp->smk_known;
|
||||
final = skp;
|
||||
|
||||
/*
|
||||
* Transmuting directory
|
||||
@ -3173,7 +3177,7 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
|
||||
}
|
||||
|
||||
if (final == NULL)
|
||||
isp->smk_inode = ckp->smk_known;
|
||||
isp->smk_inode = ckp;
|
||||
else
|
||||
isp->smk_inode = final;
|
||||
|
||||
@ -3298,12 +3302,11 @@ static int smack_unix_stream_connect(struct sock *sock,
|
||||
smk_ad_init_net(&ad, __func__, LSM_AUDIT_DATA_NET, &net);
|
||||
smk_ad_setfield_u_net_sk(&ad, other);
|
||||
#endif
|
||||
rc = smk_access(skp, okp->smk_known, MAY_WRITE, &ad);
|
||||
rc = smk_bu_note("UDS connect", skp, okp->smk_known,
|
||||
MAY_WRITE, rc);
|
||||
rc = smk_access(skp, okp, MAY_WRITE, &ad);
|
||||
rc = smk_bu_note("UDS connect", skp, okp, MAY_WRITE, rc);
|
||||
if (rc == 0) {
|
||||
rc = smk_access(okp, skp->smk_known, MAY_WRITE, NULL);
|
||||
rc = smk_bu_note("UDS connect", okp, skp->smk_known,
|
||||
rc = smk_access(okp, skp, MAY_WRITE, NULL);
|
||||
rc = smk_bu_note("UDS connect", okp, skp,
|
||||
MAY_WRITE, rc);
|
||||
}
|
||||
}
|
||||
@ -3331,7 +3334,6 @@ static int smack_unix_may_send(struct socket *sock, struct socket *other)
|
||||
{
|
||||
struct socket_smack *ssp = sock->sk->sk_security;
|
||||
struct socket_smack *osp = other->sk->sk_security;
|
||||
struct smack_known *skp;
|
||||
struct smk_audit_info ad;
|
||||
int rc;
|
||||
|
||||
@ -3345,10 +3347,8 @@ static int smack_unix_may_send(struct socket *sock, struct socket *other)
|
||||
if (smack_privileged(CAP_MAC_OVERRIDE))
|
||||
return 0;
|
||||
|
||||
skp = ssp->smk_out;
|
||||
rc = smk_access(skp, osp->smk_in->smk_known, MAY_WRITE, &ad);
|
||||
rc = smk_bu_note("UDS send", skp, osp->smk_in->smk_known,
|
||||
MAY_WRITE, rc);
|
||||
rc = smk_access(ssp->smk_out, osp->smk_in, MAY_WRITE, &ad);
|
||||
rc = smk_bu_note("UDS send", ssp->smk_out, osp->smk_in, MAY_WRITE, rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -3563,8 +3563,8 @@ static int smack_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
|
||||
* This is the simplist possible security model
|
||||
* for networking.
|
||||
*/
|
||||
rc = smk_access(skp, ssp->smk_in->smk_known, MAY_WRITE, &ad);
|
||||
rc = smk_bu_note("IPv4 delivery", skp, ssp->smk_in->smk_known,
|
||||
rc = smk_access(skp, ssp->smk_in, MAY_WRITE, &ad);
|
||||
rc = smk_bu_note("IPv4 delivery", skp, ssp->smk_in,
|
||||
MAY_WRITE, rc);
|
||||
if (rc != 0)
|
||||
netlbl_skbuff_err(skb, rc, 0);
|
||||
@ -3708,7 +3708,7 @@ static int smack_inet_conn_request(struct sock *sk, struct sk_buff *skb,
|
||||
struct netlbl_lsm_secattr secattr;
|
||||
struct sockaddr_in addr;
|
||||
struct iphdr *hdr;
|
||||
char *hsp;
|
||||
struct smack_known *hskp;
|
||||
int rc;
|
||||
struct smk_audit_info ad;
|
||||
#ifdef CONFIG_AUDIT
|
||||
@ -3745,9 +3745,8 @@ static int smack_inet_conn_request(struct sock *sk, struct sk_buff *skb,
|
||||
* Receiving a packet requires that the other end be able to write
|
||||
* here. Read access is not required.
|
||||
*/
|
||||
rc = smk_access(skp, ssp->smk_in->smk_known, MAY_WRITE, &ad);
|
||||
rc = smk_bu_note("IPv4 connect", skp, ssp->smk_in->smk_known,
|
||||
MAY_WRITE, rc);
|
||||
rc = smk_access(skp, ssp->smk_in, MAY_WRITE, &ad);
|
||||
rc = smk_bu_note("IPv4 connect", skp, ssp->smk_in, MAY_WRITE, rc);
|
||||
if (rc != 0)
|
||||
return rc;
|
||||
|
||||
@ -3765,10 +3764,10 @@ static int smack_inet_conn_request(struct sock *sk, struct sk_buff *skb,
|
||||
hdr = ip_hdr(skb);
|
||||
addr.sin_addr.s_addr = hdr->saddr;
|
||||
rcu_read_lock();
|
||||
hsp = smack_host_label(&addr);
|
||||
hskp = smack_host_label(&addr);
|
||||
rcu_read_unlock();
|
||||
|
||||
if (hsp == NULL)
|
||||
if (hskp == NULL)
|
||||
rc = netlbl_req_setattr(req, &skp->smk_netlabel);
|
||||
else
|
||||
netlbl_req_delattr(req);
|
||||
@ -3820,7 +3819,7 @@ static int smack_key_alloc(struct key *key, const struct cred *cred,
|
||||
{
|
||||
struct smack_known *skp = smk_of_task(cred->security);
|
||||
|
||||
key->security = skp->smk_known;
|
||||
key->security = skp;
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -3909,6 +3908,7 @@ static int smack_key_permission(key_ref_t key_ref,
|
||||
*/
|
||||
static int smack_audit_rule_init(u32 field, u32 op, char *rulestr, void **vrule)
|
||||
{
|
||||
struct smack_known *skp;
|
||||
char **rule = (char **)vrule;
|
||||
*rule = NULL;
|
||||
|
||||
@ -3918,7 +3918,9 @@ static int smack_audit_rule_init(u32 field, u32 op, char *rulestr, void **vrule)
|
||||
if (op != Audit_equal && op != Audit_not_equal)
|
||||
return -EINVAL;
|
||||
|
||||
*rule = smk_import(rulestr, 0);
|
||||
skp = smk_import_entry(rulestr, 0);
|
||||
if (skp)
|
||||
*rule = skp->smk_known;
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -4037,7 +4039,12 @@ static int smack_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
|
||||
*/
|
||||
static int smack_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
|
||||
{
|
||||
*secid = smack_to_secid(secdata);
|
||||
struct smack_known *skp = smk_find_entry(secdata);
|
||||
|
||||
if (skp)
|
||||
*secid = skp->smk_secid;
|
||||
else
|
||||
*secid = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
@ -131,14 +131,17 @@ LIST_HEAD(smack_rule_list);
|
||||
|
||||
struct smack_parsed_rule {
|
||||
struct smack_known *smk_subject;
|
||||
char *smk_object;
|
||||
struct smack_known *smk_object;
|
||||
int smk_access1;
|
||||
int smk_access2;
|
||||
};
|
||||
|
||||
static int smk_cipso_doi_value = SMACK_CIPSO_DOI_DEFAULT;
|
||||
|
||||
const char *smack_cipso_option = SMACK_CIPSO_OPTION;
|
||||
struct smack_known smack_cipso_option = {
|
||||
.smk_known = SMACK_CIPSO_OPTION,
|
||||
.smk_secid = 0,
|
||||
};
|
||||
|
||||
/*
|
||||
* Values for parsing cipso rules
|
||||
@ -339,7 +342,7 @@ static int smk_fill_rule(const char *subject, const char *object,
|
||||
if (rule->smk_subject == NULL)
|
||||
return -EINVAL;
|
||||
|
||||
rule->smk_object = smk_import(object, len);
|
||||
rule->smk_object = smk_import_entry(object, len);
|
||||
if (rule->smk_object == NULL)
|
||||
return -EINVAL;
|
||||
} else {
|
||||
@ -359,7 +362,7 @@ static int smk_fill_rule(const char *subject, const char *object,
|
||||
kfree(cp);
|
||||
if (skp == NULL)
|
||||
return -ENOENT;
|
||||
rule->smk_object = skp->smk_known;
|
||||
rule->smk_object = skp;
|
||||
}
|
||||
|
||||
rule->smk_access1 = smk_perm_from_str(access1);
|
||||
@ -598,13 +601,15 @@ static void smk_rule_show(struct seq_file *s, struct smack_rule *srp, int max)
|
||||
* anything you read back.
|
||||
*/
|
||||
if (strlen(srp->smk_subject->smk_known) >= max ||
|
||||
strlen(srp->smk_object) >= max)
|
||||
strlen(srp->smk_object->smk_known) >= max)
|
||||
return;
|
||||
|
||||
if (srp->smk_access == 0)
|
||||
return;
|
||||
|
||||
seq_printf(s, "%s %s", srp->smk_subject->smk_known, srp->smk_object);
|
||||
seq_printf(s, "%s %s",
|
||||
srp->smk_subject->smk_known,
|
||||
srp->smk_object->smk_known);
|
||||
|
||||
seq_putc(s, ' ');
|
||||
|
||||
@ -1073,7 +1078,7 @@ static int netlbladdr_seq_show(struct seq_file *s, void *v)
|
||||
for (maskn = 0; temp_mask; temp_mask <<= 1, maskn++);
|
||||
|
||||
seq_printf(s, "%u.%u.%u.%u/%d %s\n",
|
||||
hp[0], hp[1], hp[2], hp[3], maskn, skp->smk_label);
|
||||
hp[0], hp[1], hp[2], hp[3], maskn, skp->smk_label->smk_known);
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -1153,10 +1158,10 @@ static void smk_netlbladdr_insert(struct smk_netlbladdr *new)
|
||||
static ssize_t smk_write_netlbladdr(struct file *file, const char __user *buf,
|
||||
size_t count, loff_t *ppos)
|
||||
{
|
||||
struct smk_netlbladdr *skp;
|
||||
struct smk_netlbladdr *snp;
|
||||
struct sockaddr_in newname;
|
||||
char *smack;
|
||||
char *sp;
|
||||
struct smack_known *skp;
|
||||
char *data;
|
||||
char *host = (char *)&newname.sin_addr.s_addr;
|
||||
int rc;
|
||||
@ -1219,15 +1224,15 @@ static ssize_t smk_write_netlbladdr(struct file *file, const char __user *buf,
|
||||
* If smack begins with '-', it is an option, don't import it
|
||||
*/
|
||||
if (smack[0] != '-') {
|
||||
sp = smk_import(smack, 0);
|
||||
if (sp == NULL) {
|
||||
skp = smk_import_entry(smack, 0);
|
||||
if (skp == NULL) {
|
||||
rc = -EINVAL;
|
||||
goto free_out;
|
||||
}
|
||||
} else {
|
||||
/* check known options */
|
||||
if (strcmp(smack, smack_cipso_option) == 0)
|
||||
sp = (char *)smack_cipso_option;
|
||||
if (strcmp(smack, smack_cipso_option.smk_known) == 0)
|
||||
skp = &smack_cipso_option;
|
||||
else {
|
||||
rc = -EINVAL;
|
||||
goto free_out;
|
||||
@ -1250,9 +1255,9 @@ static ssize_t smk_write_netlbladdr(struct file *file, const char __user *buf,
|
||||
nsa = newname.sin_addr.s_addr;
|
||||
/* try to find if the prefix is already in the list */
|
||||
found = 0;
|
||||
list_for_each_entry_rcu(skp, &smk_netlbladdr_list, list) {
|
||||
if (skp->smk_host.sin_addr.s_addr == nsa &&
|
||||
skp->smk_mask.s_addr == mask.s_addr) {
|
||||
list_for_each_entry_rcu(snp, &smk_netlbladdr_list, list) {
|
||||
if (snp->smk_host.sin_addr.s_addr == nsa &&
|
||||
snp->smk_mask.s_addr == mask.s_addr) {
|
||||
found = 1;
|
||||
break;
|
||||
}
|
||||
@ -1260,26 +1265,26 @@ static ssize_t smk_write_netlbladdr(struct file *file, const char __user *buf,
|
||||
smk_netlabel_audit_set(&audit_info);
|
||||
|
||||
if (found == 0) {
|
||||
skp = kzalloc(sizeof(*skp), GFP_KERNEL);
|
||||
if (skp == NULL)
|
||||
snp = kzalloc(sizeof(*snp), GFP_KERNEL);
|
||||
if (snp == NULL)
|
||||
rc = -ENOMEM;
|
||||
else {
|
||||
rc = 0;
|
||||
skp->smk_host.sin_addr.s_addr = newname.sin_addr.s_addr;
|
||||
skp->smk_mask.s_addr = mask.s_addr;
|
||||
skp->smk_label = sp;
|
||||
smk_netlbladdr_insert(skp);
|
||||
snp->smk_host.sin_addr.s_addr = newname.sin_addr.s_addr;
|
||||
snp->smk_mask.s_addr = mask.s_addr;
|
||||
snp->smk_label = skp;
|
||||
smk_netlbladdr_insert(snp);
|
||||
}
|
||||
} else {
|
||||
/* we delete the unlabeled entry, only if the previous label
|
||||
* wasn't the special CIPSO option */
|
||||
if (skp->smk_label != smack_cipso_option)
|
||||
if (snp->smk_label != &smack_cipso_option)
|
||||
rc = netlbl_cfg_unlbl_static_del(&init_net, NULL,
|
||||
&skp->smk_host.sin_addr, &skp->smk_mask,
|
||||
&snp->smk_host.sin_addr, &snp->smk_mask,
|
||||
PF_INET, &audit_info);
|
||||
else
|
||||
rc = 0;
|
||||
skp->smk_label = sp;
|
||||
snp->smk_label = skp;
|
||||
}
|
||||
|
||||
/*
|
||||
@ -1287,10 +1292,10 @@ static ssize_t smk_write_netlbladdr(struct file *file, const char __user *buf,
|
||||
* this host so that incoming packets get labeled.
|
||||
* but only if we didn't get the special CIPSO option
|
||||
*/
|
||||
if (rc == 0 && sp != smack_cipso_option)
|
||||
if (rc == 0 && skp != &smack_cipso_option)
|
||||
rc = netlbl_cfg_unlbl_static_add(&init_net, NULL,
|
||||
&skp->smk_host.sin_addr, &skp->smk_mask, PF_INET,
|
||||
smack_to_secid(skp->smk_label), &audit_info);
|
||||
&snp->smk_host.sin_addr, &snp->smk_mask, PF_INET,
|
||||
snp->smk_label->smk_secid, &audit_info);
|
||||
|
||||
if (rc == 0)
|
||||
rc = count;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user