[PATCH 19/23] LSM: Use multiple secids in LSM interfaces

From: Casey Schaufler
Date: Thu May 10 2018 - 20:55:55 EST

From: Casey Schaufler <casey@xxxxxxxxxxxxxxxx>
Date: Thu, 10 May 2018 15:41:54 -0700
Subject: [PATCH 19/23] LSM: Use multiple secids in LSM interfaces

This is the second of two parts required to change the
security module infrastructure from using a u32 to
identify extended security attributes.

There's a little bit of stubbing at this point because
the "struct secid" is in fact a union of u32 entries,
and you can only use one at a time.

Because the security API is used in many interesting ways
(audit, file systems, and a variety of networking) the
change hits a lot of places.

Signed-off-by: Casey Schaufler <casey@xxxxxxxxxxxxxxxx>
---
include/linux/cred.h | 3 +-
include/linux/security.h | 75 +++++++++++--------
include/net/scm.h | 4 +-
kernel/audit.c | 23 +++---
kernel/audit.h | 9 +--
kernel/auditfilter.c | 4 +-
kernel/auditsc.c | 42 ++++++-----
kernel/cred.c | 6 +-
net/ipv4/ip_sockglue.c | 6 +-
net/netfilter/nf_conntrack_netlink.c | 12 +++-
net/netfilter/nf_conntrack_standalone.c | 6 +-
net/netfilter/nfnetlink_queue.c | 9 ++-
net/netfilter/xt_SECMARK.c | 7 +-
net/netlabel/netlabel_kapi.c | 2 +-
net/netlabel/netlabel_unlabeled.c | 31 ++++----
net/netlabel/netlabel_unlabeled.h | 2 +-
net/netlabel/netlabel_user.c | 2 +-
net/netlabel/netlabel_user.h | 2 +-
net/unix/af_unix.c | 6 +-
net/xfrm/xfrm_policy.c | 6 +-
net/xfrm/xfrm_state.c | 2 +-
security/integrity/ima/ima.h | 10 +--
security/integrity/ima/ima_api.c | 5 +-
security/integrity/ima/ima_appraise.c | 4 +-
security/integrity/ima/ima_main.c | 22 +++---
security/integrity/ima/ima_policy.c | 11 +--
security/security.c | 124 +++++++++++---------------------
27 files changed, 221 insertions(+), 214 deletions(-)

diff --git a/include/linux/cred.h b/include/linux/cred.h
index 631286535d0f..217814eb1925 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -23,6 +23,7 @@

struct cred;
struct inode;
+struct secids;

/*
* COW Supplementary groups list
@@ -161,7 +162,7 @@ extern const struct cred *override_creds(const struct cred *);
extern void revert_creds(const struct cred *);
extern struct cred *prepare_kernel_cred(struct task_struct *);
extern int change_create_files_as(struct cred *, struct inode *);
-extern int set_security_override(struct cred *, u32);
+extern int set_security_override(struct cred *cred, struct secids *secid);
extern int set_security_override_from_ctx(struct cred *, const char *);
extern int set_create_files_as(struct cred *, struct inode *);
extern void __init cred_init(void);
diff --git a/include/linux/security.h b/include/linux/security.h
index f16c33320792..ab70064c283f 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -330,7 +330,7 @@ int security_inode_killpriv(struct dentry *dentry);
int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
-void security_inode_getsecid(struct inode *inode, u32 *secid);
+void security_inode_getsecid(struct inode *inode, struct secids *secid);
int security_inode_copy_up(struct dentry *src, struct cred **new);
int security_inode_copy_up_xattr(const char *name);
int security_file_permission(struct file *file, int mask);
@@ -355,8 +355,8 @@ int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
void security_cred_free(struct cred *cred);
int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
void security_transfer_creds(struct cred *new, const struct cred *old);
-void security_cred_getsecid(const struct cred *c, u32 *secid);
-int security_kernel_act_as(struct cred *new, u32 secid);
+void security_cred_getsecid(const struct cred *c, struct secids *secid);
+int security_kernel_act_as(struct cred *new, struct secids *secid);
int security_kernel_create_files_as(struct cred *new, struct inode *inode);
int security_kernel_module_request(char *kmod_name);
int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
@@ -367,7 +367,7 @@ int security_task_fix_setuid(struct cred *new, const struct cred *old,
int security_task_setpgid(struct task_struct *p, pid_t pgid);
int security_task_getpgid(struct task_struct *p);
int security_task_getsid(struct task_struct *p);
-void security_task_getsecid(struct task_struct *p, u32 *secid);
+void security_task_getsecid(struct task_struct *p, struct secids *secid);
int security_task_setnice(struct task_struct *p, int nice);
int security_task_setioprio(struct task_struct *p, int ioprio);
int security_task_getioprio(struct task_struct *p);
@@ -384,7 +384,7 @@ int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5);
void security_task_to_inode(struct task_struct *p, struct inode *inode);
int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
-void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
+void security_ipc_getsecid(struct kern_ipc_perm *ipcp, struct secids *secid);
int security_msg_msg_alloc(struct msg_msg *msg);
void security_msg_msg_free(struct msg_msg *msg);
int security_msg_queue_alloc(struct kern_ipc_perm *msq);
@@ -413,8 +413,9 @@ int security_setprocattr(const char *lsm, const char *name, void *value,
size_t size);
int security_netlink_send(struct sock *sk, struct sk_buff *skb);
int security_ismaclabel(const char *name);
-int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
-int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
+int security_secid_to_secctx(struct secids *secid, char **secdata, u32 *seclen);
+int security_secctx_to_secid(const char *secdata, u32 seclen,
+ struct secids *secid);
void security_release_secctx(char *secdata, u32 seclen);

void security_inode_invalidate_secctx(struct inode *inode);
@@ -819,9 +820,10 @@ static inline int security_inode_listsecurity(struct inode *inode, char *buffer,
return 0;
}

-static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
+static inline void security_inode_getsecid(struct inode *inode,
+ struct secids *secid)
{
- *secid = 0;
+ secid->secmark = 0;
}

static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
@@ -934,7 +936,8 @@ static inline void security_transfer_creds(struct cred *new,
{
}

-static inline int security_kernel_act_as(struct cred *cred, u32 secid)
+static inline int security_kernel_act_as(struct cred *cred,
+ struct secids *secid)
{
return 0;
}
@@ -985,9 +988,10 @@ static inline int security_task_getsid(struct task_struct *p)
return 0;
}

-static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
+static inline void security_task_getsecid(struct task_struct *p,
+ struct secids *secid)
{
- *secid = 0;
+ secid->secmark = 0;
}

static inline int security_task_setnice(struct task_struct *p, int nice)
@@ -1058,9 +1062,10 @@ static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
return 0;
}

-static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
+static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp,
+ struct secids *secid)
{
- *secid = 0;
+ secid->secmark = 0;
}

static inline int security_msg_msg_alloc(struct msg_msg *msg)
@@ -1180,14 +1185,15 @@ static inline int security_ismaclabel(const char *name)
return 0;
}

-static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
+static inline int security_secid_to_secctx(struct secids *secid,
+ char **secdata, u32 *seclen)
{
return -EOPNOTSUPP;
}

static inline int security_secctx_to_secid(const char *secdata,
u32 seclen,
- u32 *secid)
+ struct secids *secid)
{
return -EOPNOTSUPP;
}
@@ -1236,7 +1242,8 @@ int security_socket_shutdown(struct socket *sock, int how);
int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
int __user *optlen, unsigned len);
-int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
+int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb,
+ struct secids *secid);
int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
void security_sk_free(struct sock *sk);
void security_sk_clone(const struct sock *sk, struct sock *newsk);
@@ -1249,7 +1256,7 @@ void security_inet_csk_clone(struct sock *newsk,
const struct request_sock *req);
void security_inet_conn_established(struct sock *sk,
struct sk_buff *skb);
-int security_secmark_relabel_packet(u32 secid);
+int security_secmark_relabel_packet(struct secids *secid);
void security_secmark_refcount_inc(void);
void security_secmark_refcount_dec(void);
int security_tun_dev_alloc_security(void **security);
@@ -1368,7 +1375,9 @@ static inline int security_socket_getpeersec_stream(struct socket *sock, char __
return -ENOPROTOOPT;
}

-static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
+static inline int security_socket_getpeersec_dgram(struct socket *sock,
+ struct sk_buff *skb,
+ struct secids *secid)
{
return -ENOPROTOOPT;
}
@@ -1414,7 +1423,7 @@ static inline void security_inet_conn_established(struct sock *sk,
{
}

-static inline int security_secmark_relabel_packet(u32 secid)
+static inline int security_secmark_relabel_packet(struct secids *secid)
{
return 0;
}
@@ -1511,14 +1520,16 @@ void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
- struct xfrm_sec_ctx *polsec, u32 secid);
+ struct xfrm_sec_ctx *polsec,
+ const struct secids *secid);
int security_xfrm_state_delete(struct xfrm_state *x);
void security_xfrm_state_free(struct xfrm_state *x);
-int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
+int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx,
+ struct secids *fl_secid, u8 dir);
int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
struct xfrm_policy *xp,
const struct flowi *fl);
-int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
+int security_xfrm_decode_session(struct sk_buff *skb, struct secids *secid);
void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);

#else /* CONFIG_SECURITY_NETWORK_XFRM */
@@ -1551,7 +1562,8 @@ static inline int security_xfrm_state_alloc(struct xfrm_state *x,
}

static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
- struct xfrm_sec_ctx *polsec, u32 secid)
+ struct xfrm_sec_ctx *polsec,
+ const struct secids *secid)
{
return 0;
}
@@ -1565,7 +1577,8 @@ static inline int security_xfrm_state_delete(struct xfrm_state *x)
return 0;
}

-static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
+static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx,
+ struct secids *fl_secid, u8 dir)
{
return 0;
}
@@ -1576,7 +1589,8 @@ static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
return 1;
}

-static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
+static inline int security_xfrm_decode_session(struct sk_buff *skb,
+ struct secids *secid)
{
return 0;
}
@@ -1712,8 +1726,8 @@ static inline int security_key_getsecurity(struct key *key, char **_buffer)
#ifdef CONFIG_SECURITY
int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
int security_audit_rule_known(struct audit_krule *krule);
-int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
- struct audit_context *actx);
+int security_audit_rule_match(struct secids *secid, u32 field, u32 op,
+ void *lsmrule, struct audit_context *actx);
void security_audit_rule_free(void *lsmrule);

#else
@@ -1729,8 +1743,9 @@ static inline int security_audit_rule_known(struct audit_krule *krule)
return 0;
}

-static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
- void *lsmrule, struct audit_context *actx)
+static inline int security_audit_rule_match(struct secids *secid, u32 field,
+ u32 op, void *lsmrule,
+ struct audit_context *actx)
{
return 0;
}
diff --git a/include/net/scm.h b/include/net/scm.h
index 903771c8d4e3..292575f75201 100644
--- a/include/net/scm.h
+++ b/include/net/scm.h
@@ -32,7 +32,7 @@ struct scm_cookie {
struct scm_fp_list *fp; /* Passed files */
struct scm_creds creds; /* Skb credentials */
#ifdef CONFIG_SECURITY_NETWORK
- u32 secid; /* Passed security ID */
+ struct secids secid; /* Passed security ID */
#endif
};

@@ -96,7 +96,7 @@ static inline void scm_passec(struct socket *sock, struct msghdr *msg, struct sc
int err;

if (test_bit(SOCK_PASSSEC, &sock->flags)) {
- err = security_secid_to_secctx(scm->secid, &secdata, &seclen);
+ err = security_secid_to_secctx(&scm->secid, &secdata, &seclen);

if (!err) {
put_cmsg(msg, SOL_SOCKET, SCM_SECURITY, seclen, secdata);
diff --git a/kernel/audit.c b/kernel/audit.c
index 670665c6e2a6..0c424f107b0c 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -141,7 +141,7 @@ static u32 audit_backlog_wait_time = AUDIT_BACKLOG_WAIT_TIME;
/* The identity of the user shutting down the audit system. */
kuid_t audit_sig_uid = INVALID_UID;
pid_t audit_sig_pid = -1;
-u32 audit_sig_sid = 0;
+struct secids audit_sig_sid;

/* Records can be lost in several ways:
0) [suppressed in audit_alloc]
@@ -1421,20 +1421,21 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
}
case AUDIT_SIGNAL_INFO:
len = 0;
- if (audit_sig_sid) {
- err = security_secid_to_secctx(audit_sig_sid, &ctx, &len);
+ if (secid_valid(&audit_sig_sid)) {
+ err = security_secid_to_secctx(&audit_sig_sid, &ctx,
+ &len);
if (err)
return err;
}
sig_data = kmalloc(sizeof(*sig_data) + len, GFP_KERNEL);
if (!sig_data) {
- if (audit_sig_sid)
+ if (secid_valid(&audit_sig_sid))
security_release_secctx(ctx, len);
return -ENOMEM;
}
sig_data->uid = from_kuid(&init_user_ns, audit_sig_uid);
sig_data->pid = audit_sig_pid;
- if (audit_sig_sid) {
+ if (secid_valid(&audit_sig_sid)) {
memcpy(sig_data->ctx, ctx, len);
security_release_secctx(ctx, len);
}
@@ -2166,12 +2167,12 @@ void audit_log_name(struct audit_context *context, struct audit_names *n,
from_kgid(&init_user_ns, n->gid),
MAJOR(n->rdev),
MINOR(n->rdev));
- if (n->osid != 0) {
+ if (secid_valid(&n->osid)) {
char *ctx = NULL;
u32 len;
if (security_secid_to_secctx(
- n->osid, &ctx, &len)) {
- audit_log_format(ab, " osid=%u", n->osid);
+ &n->osid, &ctx, &len)) {
+ audit_log_format(ab, " osid=%u", n->osid.secmark);
if (call_panic)
*call_panic = 2;
} else {
@@ -2209,13 +2210,13 @@ int audit_log_task_context(struct audit_buffer *ab)
char *ctx = NULL;
unsigned len;
int error;
- u32 sid;
+ struct secids sid;

security_task_getsecid(current, &sid);
- if (!sid)
+ if (!secid_valid(&sid))
return 0;

- error = security_secid_to_secctx(sid, &ctx, &len);
+ error = security_secid_to_secctx(&sid, &ctx, &len);
if (error) {
if (error != -EINVAL)
goto error_path;
diff --git a/kernel/audit.h b/kernel/audit.h
index 214e14948370..246a4721577d 100644
--- a/kernel/audit.h
+++ b/kernel/audit.h
@@ -21,6 +21,7 @@

#include <linux/fs.h>
#include <linux/audit.h>
+#include <linux/security.h>
#include <linux/skbuff.h>
#include <uapi/linux/mqueue.h>
#include <linux/tty.h>
@@ -89,7 +90,7 @@ struct audit_names {
kuid_t uid;
kgid_t gid;
dev_t rdev;
- u32 osid;
+ struct secids osid;
struct audit_cap_data fcap;
unsigned int fcap_ver;
unsigned char type; /* record type */
@@ -146,7 +147,7 @@ struct audit_context {
kuid_t target_auid;
kuid_t target_uid;
unsigned int target_sessionid;
- u32 target_sid;
+ struct secids target_sid;
char target_comm[TASK_COMM_LEN];

struct audit_tree_refs *trees, *first_trees;
@@ -163,7 +164,7 @@ struct audit_context {
kuid_t uid;
kgid_t gid;
umode_t mode;
- u32 osid;
+ struct secids osid;
int has_perm;
uid_t perm_uid;
gid_t perm_gid;
@@ -328,7 +329,7 @@ extern char *audit_unpack_string(void **bufp, size_t *remain, size_t len);

extern pid_t audit_sig_pid;
extern kuid_t audit_sig_uid;
-extern u32 audit_sig_sid;
+extern struct secids audit_sig_sid;

extern int audit_filter(int msgtype, unsigned int listtype);

diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index d7a807e81451..d3e5ef7656c7 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -1327,7 +1327,7 @@ int audit_filter(int msgtype, unsigned int listtype)
for (i = 0; i < e->rule.field_count; i++) {
struct audit_field *f = &e->rule.fields[i];
pid_t pid;
- u32 sid;
+ struct secids sid;

switch (f->type) {
case AUDIT_PID:
@@ -1358,7 +1358,7 @@ int audit_filter(int msgtype, unsigned int listtype)
case AUDIT_SUBJ_CLR:
if (f->lsm_rule) {
security_task_getsecid(current, &sid);
- result = security_audit_rule_match(sid,
+ result = security_audit_rule_match(&sid,
f->type, f->op, f->lsm_rule, NULL);
}
break;
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 4e0a4ac803db..3ff9a59127ba 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -112,7 +112,7 @@ struct audit_aux_data_pids {
kuid_t target_auid[AUDIT_AUX_PIDS];
kuid_t target_uid[AUDIT_AUX_PIDS];
unsigned int target_sessionid[AUDIT_AUX_PIDS];
- u32 target_sid[AUDIT_AUX_PIDS];
+ struct secids target_sid[AUDIT_AUX_PIDS];
char target_comm[AUDIT_AUX_PIDS][TASK_COMM_LEN];
int pid_count;
};
@@ -446,10 +446,11 @@ static int audit_filter_rules(struct task_struct *tsk,
{
const struct cred *cred;
int i, need_sid = 1;
- u32 sid;
+ struct secids sid;
unsigned int sessionid;

- cred = rcu_dereference_check(tsk->cred, tsk == current || task_creation);
+ cred = rcu_dereference_check(tsk->cred,
+ tsk == current || task_creation);

for (i = 0; i < rule->field_count; i++) {
struct audit_field *f = &rule->fields[i];
@@ -629,7 +630,8 @@ static int audit_filter_rules(struct task_struct *tsk,
security_task_getsecid(tsk, &sid);
need_sid = 0;
}
- result = security_audit_rule_match(sid, f->type,
+ result = security_audit_rule_match(&sid,
+ f->type,
f->op,
f->lsm_rule,
ctx);
@@ -646,13 +648,17 @@ static int audit_filter_rules(struct task_struct *tsk,
/* Find files that match */
if (name) {
result = security_audit_rule_match(
- name->osid, f->type, f->op,
+ &name->osid, f->type, f->op,
f->lsm_rule, ctx);
} else if (ctx) {
- list_for_each_entry(n, &ctx->names_list, list) {
- if (security_audit_rule_match(n->osid, f->type,
- f->op, f->lsm_rule,
- ctx)) {
+ list_for_each_entry(n, &ctx->names_list,
+ list) {
+ if (security_audit_rule_match(
+ &n->osid,
+ f->type,
+ f->op,
+ f->lsm_rule,
+ ctx)) {
++result;
break;
}
@@ -661,7 +667,7 @@ static int audit_filter_rules(struct task_struct *tsk,
/* Find ipc objects that match */
if (!ctx || ctx->type != AUDIT_IPC)
break;
- if (security_audit_rule_match(ctx->ipc.osid,
+ if (security_audit_rule_match(&ctx->ipc.osid,
f->type, f->op,
f->lsm_rule, ctx))
++result;
@@ -969,7 +975,7 @@ static inline void audit_free_context(struct audit_context *context)

static int audit_log_pid_context(struct audit_context *context, pid_t pid,
kuid_t auid, kuid_t uid, unsigned int sessionid,
- u32 sid, char *comm)
+ struct secids *sid, char *comm)
{
struct audit_buffer *ab;
char *ctx = NULL;
@@ -1191,17 +1197,17 @@ static void show_special(struct audit_context *context, int *call_panic)
context->socketcall.args[i]);
break; }
case AUDIT_IPC: {
- u32 osid = context->ipc.osid;
+ struct secids osid = context->ipc.osid;

audit_log_format(ab, "ouid=%u ogid=%u mode=%#ho",
from_kuid(&init_user_ns, context->ipc.uid),
from_kgid(&init_user_ns, context->ipc.gid),
context->ipc.mode);
- if (osid) {
+ if (secid_valid(&osid)) {
char *ctx = NULL;
u32 len;
- if (security_secid_to_secctx(osid, &ctx, &len)) {
- audit_log_format(ab, " osid=%u", osid);
+ if (security_secid_to_secctx(&osid, &ctx, &len)) {
+ audit_log_format(ab, " osid=%u", osid.secmark);
*call_panic = 1;
} else {
audit_log_format(ab, " obj=%s", ctx);
@@ -1424,7 +1430,7 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
axs->target_auid[i],
axs->target_uid[i],
axs->target_sessionid[i],
- axs->target_sid[i],
+ &axs->target_sid[i],
axs->target_comm[i]))
call_panic = 1;
}
@@ -1433,7 +1439,7 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
audit_log_pid_context(context, context->target_pid,
context->target_auid, context->target_uid,
context->target_sessionid,
- context->target_sid, context->target_comm))
+ &context->target_sid, context->target_comm))
call_panic = 1;

if (context->pwd.dentry && context->pwd.mnt) {
@@ -1580,7 +1586,7 @@ void __audit_syscall_exit(int success, long return_code)
context->aux = NULL;
context->aux_pids = NULL;
context->target_pid = 0;
- context->target_sid = 0;
+ secid_init(&context->target_sid);
context->sockaddr_len = 0;
context->type = 0;
context->fds[0] = -1;
diff --git a/kernel/cred.c b/kernel/cred.c
index fa2061ee4955..362de31fcc5b 100644
--- a/kernel/cred.c
+++ b/kernel/cred.c
@@ -650,7 +650,7 @@ EXPORT_SYMBOL(prepare_kernel_cred);
* Set the LSM security ID in a set of credentials so that the subjective
* security is overridden when an alternative set of credentials is used.
*/
-int set_security_override(struct cred *new, u32 secid)
+int set_security_override(struct cred *new, struct secids *secid)
{
return security_kernel_act_as(new, secid);
}
@@ -668,14 +668,14 @@ EXPORT_SYMBOL(set_security_override);
*/
int set_security_override_from_ctx(struct cred *new, const char *secctx)
{
- u32 secid;
+ struct secids secid;
int ret;

ret = security_secctx_to_secid(secctx, strlen(secctx), &secid);
if (ret < 0)
return ret;

- return set_security_override(new, secid);
+ return set_security_override(new, &secid);
}
EXPORT_SYMBOL(set_security_override_from_ctx);

diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index 5ad2d8ed3a3f..029d51f1157b 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -129,14 +129,16 @@ static void ip_cmsg_recv_checksum(struct msghdr *msg, struct sk_buff *skb,
static void ip_cmsg_recv_security(struct msghdr *msg, struct sk_buff *skb)
{
char *secdata;
- u32 seclen, secid;
+ u32 seclen;
+ struct secids secid;
int err;

+ secid_init(&secid);
err = security_socket_getpeersec_dgram(NULL, skb, &secid);
if (err)
return;

- err = security_secid_to_secctx(secid, &secdata, &seclen);
+ err = security_secid_to_secctx(&secid, &secdata, &seclen);
if (err)
return;

diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 4c1d0c5bc268..379b1651c758 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -312,8 +312,12 @@ static int ctnetlink_dump_secctx(struct sk_buff *skb, const struct nf_conn *ct)
struct nlattr *nest_secctx;
int len, ret;
char *secctx;
+ struct secids secid;

- ret = security_secid_to_secctx(ct->secmark, &secctx, &len);
+ secid_init(&secid);
+ secid.secmark = ct->secmark;
+
+ ret = security_secid_to_secctx(&secid, &secctx, &len);
if (ret)
return 0;

@@ -592,8 +596,12 @@ static inline int ctnetlink_secctx_size(const struct nf_conn *ct)
{
#ifdef CONFIG_NF_CONNTRACK_SECMARK
int len, ret;
+ struct secids secid;
+
+ secid_init(&secid);
+ secid.secmark = ct->secmark;

- ret = security_secid_to_secctx(ct->secmark, NULL, &len);
+ ret = security_secid_to_secctx(&secid, NULL, &len);
if (ret)
return 0;

diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
index 037fec54c850..f55f3c02520a 100644
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -181,8 +181,12 @@ static void ct_show_secctx(struct seq_file *s, const struct nf_conn *ct)
int ret;
u32 len;
char *secctx;
+ struct secids secid;

- ret = security_secid_to_secctx(ct->secmark, &secctx, &len);
+ secid_init(&secid);
+ secid.secmark = ct->secmark;
+
+ ret = security_secid_to_secctx(&secid, &secctx, &len);
if (ret)
return;

diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index 74a04638ef03..82d50d78c851 100644
--- a/net/netfilter/nfnetlink_queue.c
+++ b/net/netfilter/nfnetlink_queue.c
@@ -289,13 +289,18 @@ static u32 nfqnl_get_sk_secctx(struct sk_buff *skb, char **secdata)
{
u32 seclen = 0;
#if IS_ENABLED(CONFIG_NETWORK_SECMARK)
+ struct secids secid;
+
if (!skb || !sk_fullsock(skb->sk))
return 0;

read_lock_bh(&skb->sk->sk_callback_lock);

- if (skb->secmark)
- security_secid_to_secctx(skb->secmark, secdata, &seclen);
+ if (skb->secmark) {
+ secid_init(&secid);
+ secid.secmark = skb->secmark;
+ security_secid_to_secctx(&secid, secdata, &seclen);
+ }

read_unlock_bh(&skb->sk->sk_callback_lock);
#endif
diff --git a/net/netfilter/xt_SECMARK.c b/net/netfilter/xt_SECMARK.c
index 4ad5fe27e08b..e67a6dc7ae1d 100644
--- a/net/netfilter/xt_SECMARK.c
+++ b/net/netfilter/xt_SECMARK.c
@@ -52,12 +52,15 @@ secmark_tg(struct sk_buff *skb, const struct xt_action_param *par)
static int checkentry_lsm(struct xt_secmark_target_info *info)
{
int err;
+ struct secids secid;

info->secctx[SECMARK_SECCTX_MAX - 1] = '\0';
info->secid = 0;

err = security_secctx_to_secid(info->secctx, strlen(info->secctx),
- &info->secid);
+ &secid);
+ info->secid = secid.secmark;
+
if (err) {
if (err == -EINVAL)
pr_info_ratelimited("invalid security context \'%s\'\n",
@@ -71,7 +74,7 @@ static int checkentry_lsm(struct xt_secmark_target_info *info)
return -ENOENT;
}

- err = security_secmark_relabel_packet(info->secid);
+ err = security_secmark_relabel_packet(&secid);
if (err) {
pr_info_ratelimited("unable to obtain relabeling permission\n");
return err;
diff --git a/net/netlabel/netlabel_kapi.c b/net/netlabel/netlabel_kapi.c
index 3cdd773c425e..cb8a2c790081 100644
--- a/net/netlabel/netlabel_kapi.c
+++ b/net/netlabel/netlabel_kapi.c
@@ -244,7 +244,7 @@ int netlbl_cfg_unlbl_static_add(struct net *net,

return netlbl_unlhsh_add(net,
dev_name, addr, mask, addr_len,
- secid->secmark, audit_info);
+ secid, audit_info);
}

/**
diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c
index 626d756cdee4..9bf98d54b7e9 100644
--- a/net/netlabel/netlabel_unlabeled.c
+++ b/net/netlabel/netlabel_unlabeled.c
@@ -379,7 +379,7 @@ int netlbl_unlhsh_add(struct net *net,
const void *addr,
const void *mask,
u32 addr_len,
- u32 secid,
+ struct secids *secid,
struct netlbl_audit *audit_info)
{
int ret_val;
@@ -389,7 +389,6 @@ int netlbl_unlhsh_add(struct net *net,
struct audit_buffer *audit_buf = NULL;
char *secctx = NULL;
u32 secctx_len;
- struct secids ids;

if (addr_len != sizeof(struct in_addr) &&
addr_len != sizeof(struct in6_addr))
@@ -422,8 +421,7 @@ int netlbl_unlhsh_add(struct net *net,
const struct in_addr *addr4 = addr;
const struct in_addr *mask4 = mask;

- ids.secmark = secid;
- ret_val = netlbl_unlhsh_add_addr4(iface, addr4, mask4, &ids);
+ ret_val = netlbl_unlhsh_add_addr4(iface, addr4, mask4, secid);
if (audit_buf != NULL)
netlbl_af4list_audit_addr(audit_buf, 1,
dev_name,
@@ -436,8 +434,7 @@ int netlbl_unlhsh_add(struct net *net,
const struct in6_addr *addr6 = addr;
const struct in6_addr *mask6 = mask;

- ids.secmark = secid;
- ret_val = netlbl_unlhsh_add_addr6(iface, addr6, mask6, &ids);
+ ret_val = netlbl_unlhsh_add_addr6(iface, addr6, mask6, secid);
if (audit_buf != NULL)
netlbl_af6list_audit_addr(audit_buf, 1,
dev_name,
@@ -511,7 +508,7 @@ static int netlbl_unlhsh_remove_addr4(struct net *net,
if (dev != NULL)
dev_put(dev);
if (entry != NULL &&
- security_secid_to_secctx(entry->secid.secmark,
+ security_secid_to_secctx(&entry->secid,
&secctx, &secctx_len) == 0) {
audit_log_format(audit_buf, " sec_obj=%s", secctx);
security_release_secctx(secctx, secctx_len);
@@ -572,7 +569,7 @@ static int netlbl_unlhsh_remove_addr6(struct net *net,
if (dev != NULL)
dev_put(dev);
if (entry != NULL &&
- security_secid_to_secctx(entry->secid.secmark,
+ security_secid_to_secctx(&entry->secid,
&secctx, &secctx_len) == 0) {
audit_log_format(audit_buf, " sec_obj=%s", secctx);
security_release_secctx(secctx, secctx_len);
@@ -897,7 +894,7 @@ static int netlbl_unlabel_staticadd(struct sk_buff *skb,
void *addr;
void *mask;
u32 addr_len;
- u32 secid;
+ struct secids secid;
struct netlbl_audit audit_info;

/* Don't allow users to add both IPv4 and IPv6 addresses for a
@@ -926,7 +923,7 @@ static int netlbl_unlabel_staticadd(struct sk_buff *skb,
return ret_val;

return netlbl_unlhsh_add(&init_net,
- dev_name, addr, mask, addr_len, secid,
+ dev_name, addr, mask, addr_len, &secid,
&audit_info);
}

@@ -948,7 +945,7 @@ static int netlbl_unlabel_staticadddef(struct sk_buff *skb,
void *addr;
void *mask;
u32 addr_len;
- u32 secid;
+ struct secids secid;
struct netlbl_audit audit_info;

/* Don't allow users to add both IPv4 and IPv6 addresses for a
@@ -975,7 +972,7 @@ static int netlbl_unlabel_staticadddef(struct sk_buff *skb,
return ret_val;

return netlbl_unlhsh_add(&init_net,
- NULL, addr, mask, addr_len, secid,
+ NULL, addr, mask, addr_len, &secid,
&audit_info);
}

@@ -1087,7 +1084,7 @@ static int netlbl_unlabel_staticlist_gen(u32 cmd,
struct netlbl_unlhsh_walk_arg *cb_arg = arg;
struct net_device *dev;
void *data;
- u32 secid;
+ struct secids secid;
char *secctx;
u32 secctx_len;

@@ -1127,7 +1124,7 @@ static int netlbl_unlabel_staticlist_gen(u32 cmd,
if (ret_val != 0)
goto list_cb_failure;

- secid = addr4->secid.secmark;
+ secid = addr4->secid;
} else {
ret_val = nla_put_in6_addr(cb_arg->skb,
NLBL_UNLABEL_A_IPV6ADDR,
@@ -1141,10 +1138,10 @@ static int netlbl_unlabel_staticlist_gen(u32 cmd,
if (ret_val != 0)
goto list_cb_failure;

- secid = addr6->secid.secmark;
+ secid = addr6->secid;
}

- ret_val = security_secid_to_secctx(secid, &secctx, &secctx_len);
+ ret_val = security_secid_to_secctx(&secid, &secctx, &secctx_len);
if (ret_val != 0)
goto list_cb_failure;
ret_val = nla_put(cb_arg->skb,
@@ -1546,7 +1543,7 @@ int __init netlbl_unlabel_defconf(void)
/* Only the kernel is allowed to call this function and the only time
* it is called is at bootup before the audit subsystem is reporting
* messages so don't worry to much about these values. */
- security_task_getsecid(current, &audit_info.secid.secmark);
+ security_task_getsecid(current, &audit_info.secid);
audit_info.loginuid = GLOBAL_ROOT_UID;
audit_info.sessionid = 0;

diff --git a/net/netlabel/netlabel_unlabeled.h b/net/netlabel/netlabel_unlabeled.h
index 3a9e5dc9511b..2c68e9f9de13 100644
--- a/net/netlabel/netlabel_unlabeled.h
+++ b/net/netlabel/netlabel_unlabeled.h
@@ -225,7 +225,7 @@ int netlbl_unlhsh_add(struct net *net,
const void *addr,
const void *mask,
u32 addr_len,
- u32 secid,
+ struct secids *secid,
struct netlbl_audit *audit_info);
int netlbl_unlhsh_remove(struct net *net,
const char *dev_name,
diff --git a/net/netlabel/netlabel_user.c b/net/netlabel/netlabel_user.c
index cb992f1cca2e..740db88d14f2 100644
--- a/net/netlabel/netlabel_user.c
+++ b/net/netlabel/netlabel_user.c
@@ -113,7 +113,7 @@ struct audit_buffer *netlbl_audit_start_common(int type,
audit_info->sessionid);

if (audit_info->secid.secmark != 0 &&
- security_secid_to_secctx(audit_info->secid.secmark,
+ security_secid_to_secctx(&audit_info->secid,
&secctx,
&secctx_len) == 0) {
audit_log_format(audit_buf, " subj=%s", secctx);
diff --git a/net/netlabel/netlabel_user.h b/net/netlabel/netlabel_user.h
index 1c320ccde24c..4a397cde1a48 100644
--- a/net/netlabel/netlabel_user.h
+++ b/net/netlabel/netlabel_user.h
@@ -48,7 +48,7 @@
static inline void netlbl_netlink_auditinfo(struct sk_buff *skb,
struct netlbl_audit *audit_info)
{
- security_task_getsecid(current, &audit_info->secid.secmark);
+ security_task_getsecid(current, &audit_info->secid);
audit_info->loginuid = audit_get_loginuid(current);
audit_info->sessionid = audit_get_sessionid(current);
}
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 68bb70a62afe..f0f17fc33157 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -141,17 +141,17 @@ static struct hlist_head *unix_sockets_unbound(void *addr)
#ifdef CONFIG_SECURITY_NETWORK
static void unix_get_secdata(struct scm_cookie *scm, struct sk_buff *skb)
{
- UNIXCB(skb).secid = scm->secid;
+ UNIXCB(skb).secid = scm->secid.secmark;
}

static inline void unix_set_secdata(struct scm_cookie *scm, struct sk_buff *skb)
{
- scm->secid = UNIXCB(skb).secid;
+ scm->secid.secmark = UNIXCB(skb).secid;
}

static inline bool unix_secdata_eq(struct scm_cookie *scm, struct sk_buff *skb)
{
- return (scm->secid == UNIXCB(skb).secid);
+ return (scm->secid.secmark == UNIXCB(skb).secid);
}
#else
static inline void unix_get_secdata(struct scm_cookie *scm, struct sk_buff *skb)
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 46d332ed833a..9230d8046fd7 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1070,7 +1070,7 @@ static int xfrm_policy_match(const struct xfrm_policy *pol,
match = xfrm_selector_match(sel, fl, family);
if (match)
ret = security_xfrm_policy_lookup(pol->security,
- fl->flowi_secid.secmark,
+ &fl->flowi_secid,
dir);

return ret;
@@ -1183,7 +1183,7 @@ static struct xfrm_policy *xfrm_sk_policy_lookup(const struct sock *sk, int dir,
goto out;
}
err = security_xfrm_policy_lookup(pol->security,
- fl->flowi_secid.secmark,
+ &fl->flowi_secid,
dir);
if (!err) {
if (!xfrm_pol_hold_rcu(pol))
@@ -2367,7 +2367,7 @@ int __xfrm_decode_session(struct sk_buff *skb, struct flowi *fl,
return -EAFNOSUPPORT;

afinfo->decode_session(skb, fl, reverse);
- err = security_xfrm_decode_session(skb, &fl->flowi_secid.secmark);
+ err = security_xfrm_decode_session(skb, &fl->flowi_secid);
rcu_read_unlock();
return err;
}
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index a17f7b02ac32..838a2638c8d4 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1010,7 +1010,7 @@ xfrm_state_find(const xfrm_address_t *daddr, const xfrm_address_t *saddr,
xfrm_init_tempstate(x, fl, tmpl, daddr, saddr, family);
memcpy(&x->mark, &pol->mark, sizeof(x->mark));

- error = security_xfrm_state_alloc_acquire(x, pol->security, fl->flowi_secid.secmark);
+ error = security_xfrm_state_alloc_acquire(x, pol->security, &fl->flowi_secid);
if (error) {
x->km.state = XFRM_STATE_DEAD;
to_put = x;
diff --git a/security/integrity/ima/ima.h b/security/integrity/ima/ima.h
index 35fe91aa1fc9..1b07d2e52efb 100644
--- a/security/integrity/ima/ima.h
+++ b/security/integrity/ima/ima.h
@@ -192,8 +192,9 @@ enum ima_hooks {
};

/* LIM API function definitions */
-int ima_get_action(struct inode *inode, const struct cred *cred, u32 secid,
- int mask, enum ima_hooks func, int *pcr);
+int ima_get_action(struct inode *inode, const struct cred *cred,
+ struct secids *secid, int mask, enum ima_hooks func,
+ int *pcr);
int ima_must_measure(struct inode *inode, int mask, enum ima_hooks func);
int ima_collect_measurement(struct integrity_iint_cache *iint,
struct file *file, void *buf, loff_t size,
@@ -213,8 +214,9 @@ void ima_free_template_entry(struct ima_template_entry *entry);
const char *ima_d_path(const struct path *path, char **pathbuf, char *filename);

/* IMA policy related functions */
-int ima_match_policy(struct inode *inode, const struct cred *cred, u32 secid,
- enum ima_hooks func, int mask, int flags, int *pcr);
+int ima_match_policy(struct inode *inode, const struct cred *cred,
+ struct secids *secid, enum ima_hooks func, int mask,
+ int flags, int *pcr);
void ima_init_policy(void);
void ima_update_policy(void);
void ima_update_policy_flag(void);
diff --git a/security/integrity/ima/ima_api.c b/security/integrity/ima/ima_api.c
index bf88236b7a0b..53a3b7c8ae7d 100644
--- a/security/integrity/ima/ima_api.c
+++ b/security/integrity/ima/ima_api.c
@@ -175,8 +175,9 @@ void ima_add_violation(struct file *file, const unsigned char *filename,
* Returns IMA_MEASURE, IMA_APPRAISE mask.
*
*/
-int ima_get_action(struct inode *inode, const struct cred *cred, u32 secid,
- int mask, enum ima_hooks func, int *pcr)
+int ima_get_action(struct inode *inode, const struct cred *cred,
+ struct secids *secid, int mask, enum ima_hooks func,
+ int *pcr)
{
int flags = IMA_MEASURE | IMA_AUDIT | IMA_APPRAISE | IMA_HASH;

diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c
index 8bd7a0733e51..2afe49caad38 100644
--- a/security/integrity/ima/ima_appraise.c
+++ b/security/integrity/ima/ima_appraise.c
@@ -50,13 +50,13 @@ bool is_ima_appraise_enabled(void)
*/
int ima_must_appraise(struct inode *inode, int mask, enum ima_hooks func)
{
- u32 secid;
+ struct secids secid;

if (!ima_appraise)
return 0;

security_task_getsecid(current, &secid);
- return ima_match_policy(inode, current_cred(), secid, func, mask,
+ return ima_match_policy(inode, current_cred(), &secid, func, mask,
IMA_APPRAISE | IMA_HASH, NULL);
}

diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index 74d0bd7e76d7..38b28ddc3a43 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -172,8 +172,8 @@ void ima_file_free(struct file *file)
}

static int process_measurement(struct file *file, const struct cred *cred,
- u32 secid, char *buf, loff_t size, int mask,
- enum ima_hooks func, int opened)
+ struct secids *secid, char *buf, loff_t size,
+ int mask, enum ima_hooks func, int opened)
{
struct inode *inode = file_inode(file);
struct integrity_iint_cache *iint = NULL;
@@ -338,11 +338,11 @@ static int process_measurement(struct file *file, const struct cred *cred,
*/
int ima_file_mmap(struct file *file, unsigned long prot)
{
- u32 secid;
+ struct secids secid;

if (file && (prot & PROT_EXEC)) {
security_task_getsecid(current, &secid);
- return process_measurement(file, current_cred(), secid, NULL,
+ return process_measurement(file, current_cred(), &secid, NULL,
0, MAY_EXEC, MMAP_CHECK, 0);
}

@@ -365,16 +365,16 @@ int ima_file_mmap(struct file *file, unsigned long prot)
int ima_bprm_check(struct linux_binprm *bprm)
{
int ret;
- u32 secid;
+ struct secids secid;

security_task_getsecid(current, &secid);
- ret = process_measurement(bprm->file, current_cred(), secid, NULL, 0,
+ ret = process_measurement(bprm->file, current_cred(), &secid, NULL, 0,
MAY_EXEC, BPRM_CHECK, 0);
if (ret)
return ret;

security_cred_getsecid(bprm->cred, &secid);
- return process_measurement(bprm->file, bprm->cred, secid, NULL, 0,
+ return process_measurement(bprm->file, bprm->cred, &secid, NULL, 0,
MAY_EXEC, CREDS_CHECK, 0);
}

@@ -390,10 +390,10 @@ int ima_bprm_check(struct linux_binprm *bprm)
*/
int ima_file_check(struct file *file, int mask, int opened)
{
- u32 secid;
+ struct secids secid;

security_task_getsecid(current, &secid);
- return process_measurement(file, current_cred(), secid, NULL, 0,
+ return process_measurement(file, current_cred(), &secid, NULL, 0,
mask & (MAY_READ | MAY_WRITE | MAY_EXEC |
MAY_APPEND), FILE_CHECK, opened);
}
@@ -472,7 +472,7 @@ int ima_post_read_file(struct file *file, void *buf, loff_t size,
enum kernel_read_file_id read_id)
{
enum ima_hooks func;
- u32 secid;
+ struct secids secid;

if (!file && read_id == READING_FIRMWARE) {
if ((ima_appraise & IMA_APPRAISE_FIRMWARE) &&
@@ -496,7 +496,7 @@ int ima_post_read_file(struct file *file, void *buf, loff_t size,

func = read_idmap[read_id] ?: FILE_CHECK;
security_task_getsecid(current, &secid);
- return process_measurement(file, current_cred(), secid, buf, size,
+ return process_measurement(file, current_cred(), &secid, buf, size,
MAY_READ, func, 0);
}

diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
index d89bebf85421..e38527b30047 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -256,7 +256,7 @@ static void ima_lsm_update_rules(void)
* Returns true on rule match, false on failure.
*/
static bool ima_match_rules(struct ima_rule_entry *rule, struct inode *inode,
- const struct cred *cred, u32 secid,
+ const struct cred *cred, struct secids *secid,
enum ima_hooks func, int mask)
{
int i;
@@ -293,7 +293,7 @@ static bool ima_match_rules(struct ima_rule_entry *rule, struct inode *inode,
return false;
for (i = 0; i < MAX_LSM_RULES; i++) {
int rc = 0;
- u32 osid;
+ struct secids osid;
int retried = 0;

if (!rule->lsm[i].rule)
@@ -304,7 +304,7 @@ static bool ima_match_rules(struct ima_rule_entry *rule, struct inode *inode,
case LSM_OBJ_ROLE:
case LSM_OBJ_TYPE:
security_inode_getsecid(inode, &osid);
- rc = security_filter_rule_match(osid,
+ rc = security_filter_rule_match(&osid,
rule->lsm[i].type,
Audit_equal,
rule->lsm[i].rule,
@@ -374,8 +374,9 @@ static int get_subaction(struct ima_rule_entry *rule, enum ima_hooks func)
* list when walking it. Reads are many orders of magnitude more numerous
* than writes so ima_match_policy() is classical RCU candidate.
*/
-int ima_match_policy(struct inode *inode, const struct cred *cred, u32 secid,
- enum ima_hooks func, int mask, int flags, int *pcr)
+int ima_match_policy(struct inode *inode, const struct cred *cred,
+ struct secids *secid, enum ima_hooks func, int mask,
+ int flags, int *pcr)
{
struct ima_rule_entry *entry;
int action = 0, actmask = flags | (flags << 1);
diff --git a/security/security.c b/security/security.c
index 61ffb0c04e8e..cbe1a497ec5a 100644
--- a/security/security.c
+++ b/security/security.c
@@ -1248,12 +1248,10 @@ int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer
}
EXPORT_SYMBOL(security_inode_listsecurity);

-void security_inode_getsecid(struct inode *inode, u32 *secid)
+void security_inode_getsecid(struct inode *inode, struct secids *secid)
{
- struct secids ids;
-
- call_void_hook(inode_getsecid, inode, &ids);
- *secid = ids.secmark;
+ secid_init(secid);
+ call_void_hook(inode_getsecid, inode, secid);
}

int security_inode_copy_up(struct dentry *src, struct cred **new)
@@ -1461,22 +1459,16 @@ void security_transfer_creds(struct cred *new, const struct cred *old)
call_void_hook(cred_transfer, new, old);
}

-void security_cred_getsecid(const struct cred *c, u32 *secid)
+void security_cred_getsecid(const struct cred *c, struct secids *secid)
{
- struct secids ids;
-
- ids.secmark = 0;
- call_void_hook(cred_getsecid, c, &ids);
- *secid = ids.secmark;
+ secid_init(secid);
+ call_void_hook(cred_getsecid, c, secid);
}
EXPORT_SYMBOL(security_cred_getsecid);

-int security_kernel_act_as(struct cred *new, u32 secid)
+int security_kernel_act_as(struct cred *new, struct secids *secid)
{
- struct secids ids;
-
- ids.secmark = secid;
- return call_int_hook(kernel_act_as, 0, new, &ids);
+ return call_int_hook(kernel_act_as, 0, new, secid);
}

int security_kernel_create_files_as(struct cred *new, struct inode *inode)
@@ -1533,13 +1525,10 @@ int security_task_getsid(struct task_struct *p)
return call_int_hook(task_getsid, 0, p);
}

-void security_task_getsecid(struct task_struct *p, u32 *secid)
+void security_task_getsecid(struct task_struct *p, struct secids *secid)
{
- struct secids ids;
-
- ids.secmark = 0;
- call_void_hook(task_getsecid, p, &ids);
- *secid = ids.secmark;
+ secid_init(secid);
+ call_void_hook(task_getsecid, p, secid);
}
EXPORT_SYMBOL(security_task_getsecid);

@@ -1619,13 +1608,10 @@ int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
return call_int_hook(ipc_permission, 0, ipcp, flag);
}

-void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
+void security_ipc_getsecid(struct kern_ipc_perm *ipcp, struct secids *secid)
{
- struct secids ids;
-
- ids.secmark = 0;
- call_void_hook(ipc_getsecid, ipcp, &ids);
- *secid = ids.secmark;
+ secid_init(secid);
+ call_void_hook(ipc_getsecid, ipcp, secid);
}

int security_msg_msg_alloc(struct msg_msg *msg)
@@ -1802,26 +1788,18 @@ int security_ismaclabel(const char *name)
}
EXPORT_SYMBOL(security_ismaclabel);

-int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
+int security_secid_to_secctx(struct secids *secid, char **secdata, u32 *seclen)
{
- struct secids ids;
-
- ids.secmark = secid;
- return call_int_hook(secid_to_secctx, -EOPNOTSUPP, &ids, secdata,
+ return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
seclen);
}
EXPORT_SYMBOL(security_secid_to_secctx);

-int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
+int security_secctx_to_secid(const char *secdata, u32 seclen,
+ struct secids *secid)
{
- struct secids ids;
- int rc;
-
- ids.secmark = 0;
- rc = call_int_hook(secctx_to_secid, 0, secdata, seclen, &ids);
- *secid = ids.secmark;
-
- return rc;
+ secid_init(secid);
+ return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
}
EXPORT_SYMBOL(security_secctx_to_secid);

@@ -1950,16 +1928,11 @@ int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
optval, optlen, len);
}

-int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
+int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb,
+ struct secids *secid)
{
- struct secids ids;
- int rc;
-
- rc = call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
- skb, &ids);
- *secid = ids.secmark;
-
- return rc;
+ return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
+ skb, secid);
}
EXPORT_SYMBOL(security_socket_getpeersec_dgram);

@@ -2026,12 +1999,9 @@ void security_inet_conn_established(struct sock *sk,
}
EXPORT_SYMBOL(security_inet_conn_established);

-int security_secmark_relabel_packet(u32 secid)
+int security_secmark_relabel_packet(struct secids *secid)
{
- struct secids ids;
-
- ids.secmark = secid;
- return call_int_hook(secmark_relabel_packet, 0, &ids);
+ return call_int_hook(secmark_relabel_packet, 0, secid);
}
EXPORT_SYMBOL(security_secmark_relabel_packet);

@@ -2168,12 +2138,10 @@ int security_xfrm_state_alloc(struct xfrm_state *x,
EXPORT_SYMBOL(security_xfrm_state_alloc);

int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
- struct xfrm_sec_ctx *polsec, u32 secid)
+ struct xfrm_sec_ctx *polsec,
+ const struct secids *secid)
{
- struct secids ids;
-
- ids.secmark = secid;
- return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, &ids);
+ return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
}

int security_xfrm_state_delete(struct xfrm_state *x)
@@ -2187,12 +2155,10 @@ void security_xfrm_state_free(struct xfrm_state *x)
call_void_hook(xfrm_state_free_security, x);
}

-int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
+int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx,
+ struct secids *fl_secid, u8 dir)
{
- struct secids ids;
-
- ids.secmark = fl_secid;
- return call_int_hook(xfrm_policy_lookup, 0, ctx, &ids, dir);
+ return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
}

int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
@@ -2219,22 +2185,19 @@ int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
return rc;
}

-int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
+int security_xfrm_decode_session(struct sk_buff *skb, struct secids *secid)
{
- struct secids ids;
- int rc;
-
- rc = call_int_hook(xfrm_decode_session, 0, skb, &ids, 1);
- *secid = ids.secmark;
-
- return rc;
+ secid_init(secid);
+ return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
}

void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
{
- int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
- 0);

+ int rc;
+
+ secid_init(&fl->flowi_secid);
+ rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid, 0);
BUG_ON(rc);
}
EXPORT_SYMBOL(security_skb_classify_flow);
@@ -2294,13 +2257,10 @@ void security_audit_rule_free(void *lsmrule)
call_void_hook(audit_rule_free, lsmrule);
}

-int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
- struct audit_context *actx)
+int security_audit_rule_match(struct secids *secid, u32 field, u32 op,
+ void *lsmrule, struct audit_context *actx)
{
- struct secids ids;
-
- ids.secmark = secid;
- return call_int_hook(audit_rule_match, 0, &ids, field, op, lsmrule,
+ return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
actx);
}
#endif /* CONFIG_AUDIT */
--
2.14.3