diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-30 14:55:42 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-30 14:55:42 -0700 |
commit | 6bd344e55f73f7ae671bf5c1ebe5bd814f3c4b27 (patch) | |
tree | 03dee12ff73d1f8cfb21e11fada2aa2ff964a49d | |
parent | 44b6ed4cfab8474061707b60e35afaf2c92a9dc3 (diff) | |
parent | d99cf13f14200cdb5cbb704345774c9c0698612d (diff) |
Merge tag 'selinux-pr-20210629' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull SELinux updates from Paul Moore:
- The slow_avc_audit() function is now non-blocking so we can remove
the AVC_NONBLOCKING tricks; this also includes the 'flags' variant of
avc_has_perm().
- Use kmemdup() instead of kcalloc()+copy when copying parts of the
SELinux policydb.
- The InfiniBand device name is now passed by reference when possible
in the SELinux code, removing a strncpy().
- Minor cleanups including: constification of avtab function args,
removal of useless LSM/XFRM function args, SELinux kdoc fixes, and
removal of redundant assignments.
* tag 'selinux-pr-20210629' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: kill 'flags' argument in avc_has_perm_flags() and avc_audit()
selinux: slow_avc_audit has become non-blocking
selinux: Fix kernel-doc
selinux: use __GFP_NOWARN with GFP_NOWAIT in the AVC
lsm_audit,selinux: pass IB device name by reference
selinux: Remove redundant assignment to rc
selinux: Corrected comment to match kernel-doc comment
selinux: delete selinux_xfrm_policy_lookup() useless argument
selinux: constify some avtab function arguments
selinux: simplify duplicate_policydb_cond_list() by using kmemdup()
-rw-r--r-- | include/linux/lsm_audit.h | 8 | ||||
-rw-r--r-- | include/linux/lsm_hook_defs.h | 3 | ||||
-rw-r--r-- | include/linux/security.h | 4 | ||||
-rw-r--r-- | net/xfrm/xfrm_policy.c | 6 | ||||
-rw-r--r-- | security/security.c | 4 | ||||
-rw-r--r-- | security/selinux/avc.c | 61 | ||||
-rw-r--r-- | security/selinux/hooks.c | 22 | ||||
-rw-r--r-- | security/selinux/include/avc.h | 13 | ||||
-rw-r--r-- | security/selinux/include/xfrm.h | 2 | ||||
-rw-r--r-- | security/selinux/ss/avtab.c | 28 | ||||
-rw-r--r-- | security/selinux/ss/avtab.h | 16 | ||||
-rw-r--r-- | security/selinux/ss/conditional.c | 14 | ||||
-rw-r--r-- | security/selinux/ss/policydb.c | 1 | ||||
-rw-r--r-- | security/selinux/ss/services.c | 27 | ||||
-rw-r--r-- | security/selinux/xfrm.c | 2 |
15 files changed, 90 insertions, 121 deletions
diff --git a/include/linux/lsm_audit.h b/include/linux/lsm_audit.h index cd23355d2271..17d02eda9538 100644 --- a/include/linux/lsm_audit.h +++ b/include/linux/lsm_audit.h @@ -48,13 +48,13 @@ struct lsm_ioctlop_audit { }; struct lsm_ibpkey_audit { - u64 subnet_prefix; - u16 pkey; + u64 subnet_prefix; + u16 pkey; }; struct lsm_ibendport_audit { - char dev_name[IB_DEVICE_NAME_MAX]; - u8 port; + const char *dev_name; + u8 port; }; /* Auxiliary data to use in generating the audit record. */ diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h index 04c01794de83..2adeea44c0d5 100644 --- a/include/linux/lsm_hook_defs.h +++ b/include/linux/lsm_hook_defs.h @@ -358,8 +358,7 @@ LSM_HOOK(int, 0, xfrm_state_alloc_acquire, struct xfrm_state *x, struct xfrm_sec_ctx *polsec, u32 secid) LSM_HOOK(void, LSM_RET_VOID, xfrm_state_free_security, struct xfrm_state *x) LSM_HOOK(int, 0, xfrm_state_delete_security, struct xfrm_state *x) -LSM_HOOK(int, 0, xfrm_policy_lookup, struct xfrm_sec_ctx *ctx, u32 fl_secid, - u8 dir) +LSM_HOOK(int, 0, xfrm_policy_lookup, struct xfrm_sec_ctx *ctx, u32 fl_secid) LSM_HOOK(int, 1, xfrm_state_pol_flow_match, struct xfrm_state *x, struct xfrm_policy *xp, const struct flowi_common *flic) LSM_HOOK(int, 0, xfrm_decode_session, struct sk_buff *skb, u32 *secid, diff --git a/include/linux/security.h b/include/linux/security.h index 06f7c50ce77f..24eda04221e9 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -1681,7 +1681,7 @@ int security_xfrm_state_alloc_acquire(struct xfrm_state *x, struct xfrm_sec_ctx *polsec, u32 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, u32 fl_secid); int security_xfrm_state_pol_flow_match(struct xfrm_state *x, struct xfrm_policy *xp, const struct flowi_common *flic); @@ -1732,7 +1732,7 @@ 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, u32 fl_secid) { return 0; } diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index ce500f847b99..e70cf1d2c0e0 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -1902,8 +1902,7 @@ 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, - dir); + ret = security_xfrm_policy_lookup(pol->security, fl->flowi_secid); return ret; } @@ -2181,8 +2180,7 @@ 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, - dir); + fl->flowi_secid); if (!err) { if (!xfrm_pol_hold_rcu(pol)) goto again; diff --git a/security/security.c b/security/security.c index e9f8010a2341..09533cbb7221 100644 --- a/security/security.c +++ b/security/security.c @@ -2466,9 +2466,9 @@ 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, u32 fl_secid) { - return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir); + return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid); } int security_xfrm_state_pol_flow_match(struct xfrm_state *x, diff --git a/security/selinux/avc.c b/security/selinux/avc.c index ad451cf9375e..97f4c944a20f 100644 --- a/security/selinux/avc.c +++ b/security/selinux/avc.c @@ -297,26 +297,27 @@ static struct avc_xperms_decision_node struct avc_xperms_decision_node *xpd_node; struct extended_perms_decision *xpd; - xpd_node = kmem_cache_zalloc(avc_xperms_decision_cachep, GFP_NOWAIT); + xpd_node = kmem_cache_zalloc(avc_xperms_decision_cachep, + GFP_NOWAIT | __GFP_NOWARN); if (!xpd_node) return NULL; xpd = &xpd_node->xpd; if (which & XPERMS_ALLOWED) { xpd->allowed = kmem_cache_zalloc(avc_xperms_data_cachep, - GFP_NOWAIT); + GFP_NOWAIT | __GFP_NOWARN); if (!xpd->allowed) goto error; } if (which & XPERMS_AUDITALLOW) { xpd->auditallow = kmem_cache_zalloc(avc_xperms_data_cachep, - GFP_NOWAIT); + GFP_NOWAIT | __GFP_NOWARN); if (!xpd->auditallow) goto error; } if (which & XPERMS_DONTAUDIT) { xpd->dontaudit = kmem_cache_zalloc(avc_xperms_data_cachep, - GFP_NOWAIT); + GFP_NOWAIT | __GFP_NOWARN); if (!xpd->dontaudit) goto error; } @@ -344,7 +345,7 @@ static struct avc_xperms_node *avc_xperms_alloc(void) { struct avc_xperms_node *xp_node; - xp_node = kmem_cache_zalloc(avc_xperms_cachep, GFP_NOWAIT); + xp_node = kmem_cache_zalloc(avc_xperms_cachep, GFP_NOWAIT | __GFP_NOWARN); if (!xp_node) return xp_node; INIT_LIST_HEAD(&xp_node->xpd_head); @@ -500,7 +501,7 @@ static struct avc_node *avc_alloc_node(struct selinux_avc *avc) { struct avc_node *node; - node = kmem_cache_zalloc(avc_node_cachep, GFP_NOWAIT); + node = kmem_cache_zalloc(avc_node_cachep, GFP_NOWAIT | __GFP_NOWARN); if (!node) goto out; @@ -758,7 +759,11 @@ static void avc_audit_post_callback(struct audit_buffer *ab, void *a) } } -/* This is the slow part of avc audit with big stack footprint */ +/* + * This is the slow part of avc audit with big stack footprint. + * Note that it is non-blocking and can be called from under + * rcu_read_lock(). + */ noinline int slow_avc_audit(struct selinux_state *state, u32 ssid, u32 tsid, u16 tclass, u32 requested, u32 audited, u32 denied, int result, @@ -819,13 +824,13 @@ out: } /** - * avc_update_node Update an AVC entry + * avc_update_node - Update an AVC entry * @event : Updating event * @perms : Permission mask bits * @ssid,@tsid,@tclass : identifier of an AVC entry * @seqno : sequence number when decision was made * @xpd: extended_perms_decision to be added to the node - * @flags: the AVC_* flags, e.g. AVC_NONBLOCKING, AVC_EXTENDED_PERMS, or 0. + * @flags: the AVC_* flags, e.g. AVC_EXTENDED_PERMS, or 0. * * if a valid AVC entry doesn't exist,this function returns -ENOENT. * if kmalloc() called internal returns NULL, this function returns -ENOMEM. @@ -844,21 +849,6 @@ static int avc_update_node(struct selinux_avc *avc, struct hlist_head *head; spinlock_t *lock; - /* - * If we are in a non-blocking code path, e.g. VFS RCU walk, - * then we must not add permissions to a cache entry - * because we will not audit the denial. Otherwise, - * during the subsequent blocking retry (e.g. VFS ref walk), we - * will find the permissions already granted in the cache entry - * and won't audit anything at all, leading to silent denials in - * permissive mode that only appear when in enforcing mode. - * - * See the corresponding handling of MAY_NOT_BLOCK in avc_audit() - * and selinux_inode_permission(). - */ - if (flags & AVC_NONBLOCKING) - return 0; - node = avc_alloc_node(avc); if (!node) { rc = -ENOMEM; @@ -1119,7 +1109,7 @@ decision: * @tsid: target security identifier * @tclass: target security class * @requested: requested permissions, interpreted based on @tclass - * @flags: AVC_STRICT, AVC_NONBLOCKING, or 0 + * @flags: AVC_STRICT or 0 * @avd: access vector decisions * * Check the AVC to determine whether the @requested permissions are granted @@ -1190,26 +1180,7 @@ int avc_has_perm(struct selinux_state *state, u32 ssid, u32 tsid, u16 tclass, &avd); rc2 = avc_audit(state, ssid, tsid, tclass, requested, &avd, rc, - auditdata, 0); - if (rc2) - return rc2; - return rc; -} - -int avc_has_perm_flags(struct selinux_state *state, - u32 ssid, u32 tsid, u16 tclass, u32 requested, - struct common_audit_data *auditdata, - int flags) -{ - struct av_decision avd; - int rc, rc2; - - rc = avc_has_perm_noaudit(state, ssid, tsid, tclass, requested, - (flags & MAY_NOT_BLOCK) ? AVC_NONBLOCKING : 0, - &avd); - - rc2 = avc_audit(state, ssid, tsid, tclass, requested, &avd, rc, - auditdata, flags); + auditdata); if (rc2) return rc2; return rc; diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index eaea837d89d1..b0032c42333e 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -1676,7 +1676,7 @@ static int cred_has_capability(const struct cred *cred, sid, sid, sclass, av, 0, &avd); if (!(opts & CAP_OPT_NOAUDIT)) { int rc2 = avc_audit(&selinux_state, - sid, sid, sclass, av, &avd, rc, &ad, 0); + sid, sid, sclass, av, &avd, rc, &ad); if (rc2) return rc2; } @@ -3153,9 +3153,8 @@ static int selinux_inode_follow_link(struct dentry *dentry, struct inode *inode, if (IS_ERR(isec)) return PTR_ERR(isec); - return avc_has_perm_flags(&selinux_state, - sid, isec->sid, isec->sclass, FILE__READ, &ad, - rcu ? MAY_NOT_BLOCK : 0); + return avc_has_perm(&selinux_state, + sid, isec->sid, isec->sclass, FILE__READ, &ad); } static noinline int audit_inode_permission(struct inode *inode, @@ -3164,17 +3163,13 @@ static noinline int audit_inode_permission(struct inode *inode, { struct common_audit_data ad; struct inode_security_struct *isec = selinux_inode(inode); - int rc; ad.type = LSM_AUDIT_DATA_INODE; ad.u.inode = inode; - rc = slow_avc_audit(&selinux_state, + return slow_avc_audit(&selinux_state, current_sid(), isec->sid, isec->sclass, perms, audited, denied, result, &ad); - if (rc) - return rc; - return 0; } static int selinux_inode_permission(struct inode *inode, int mask) @@ -3209,8 +3204,7 @@ static int selinux_inode_permission(struct inode *inode, int mask) return PTR_ERR(isec); rc = avc_has_perm_noaudit(&selinux_state, - sid, isec->sid, isec->sclass, perms, - no_block ? AVC_NONBLOCKING : 0, + sid, isec->sid, isec->sclass, perms, 0, &avd); audited = avc_audit_required(perms, &avd, rc, from_access ? FILE__AUDIT_ACCESS : 0, @@ -3218,10 +3212,6 @@ static int selinux_inode_permission(struct inode *inode, int mask) if (likely(!audited)) return rc; - /* fall back to ref-walk if we have to generate audit */ - if (no_block) - return -ECHILD; - rc2 = audit_inode_permission(inode, perms, audited, denied, rc); if (rc2) return rc2; @@ -6850,7 +6840,7 @@ static int selinux_ib_endport_manage_subnet(void *ib_sec, const char *dev_name, return err; ad.type = LSM_AUDIT_DATA_IBENDPORT; - strncpy(ibendport.dev_name, dev_name, sizeof(ibendport.dev_name)); + ibendport.dev_name = dev_name; ibendport.port = port_num; ad.u.ibendport = &ibendport; return avc_has_perm(&selinux_state, diff --git a/security/selinux/include/avc.h b/security/selinux/include/avc.h index cf4cc3ef959b..00f78be48283 100644 --- a/security/selinux/include/avc.h +++ b/security/selinux/include/avc.h @@ -111,7 +111,6 @@ int slow_avc_audit(struct selinux_state *state, * @avd: access vector decisions * @result: result from avc_has_perm_noaudit * @a: auxiliary audit data - * @flags: VFS walk flags * * Audit the granting or denial of permissions in accordance * with the policy. This function is typically called by @@ -127,16 +126,12 @@ static inline int avc_audit(struct selinux_state *state, u16 tclass, u32 requested, struct av_decision *avd, int result, - struct common_audit_data *a, - int flags) + struct common_audit_data *a) { u32 audited, denied; audited = avc_audit_required(requested, avd, result, 0, &denied); if (likely(!audited)) return 0; - /* fall back to ref-walk if we have to generate audit */ - if (flags & MAY_NOT_BLOCK) - return -ECHILD; return slow_avc_audit(state, ssid, tsid, tclass, requested, audited, denied, result, a); @@ -144,7 +139,6 @@ static inline int avc_audit(struct selinux_state *state, #define AVC_STRICT 1 /* Ignore permissive mode. */ #define AVC_EXTENDED_PERMS 2 /* update extended permissions */ -#define AVC_NONBLOCKING 4 /* non blocking */ int avc_has_perm_noaudit(struct selinux_state *state, u32 ssid, u32 tsid, u16 tclass, u32 requested, @@ -155,11 +149,6 @@ int avc_has_perm(struct selinux_state *state, u32 ssid, u32 tsid, u16 tclass, u32 requested, struct common_audit_data *auditdata); -int avc_has_perm_flags(struct selinux_state *state, - u32 ssid, u32 tsid, - u16 tclass, u32 requested, - struct common_audit_data *auditdata, - int flags); int avc_has_extended_perms(struct selinux_state *state, u32 ssid, u32 tsid, u16 tclass, u32 requested, diff --git a/security/selinux/include/xfrm.h b/security/selinux/include/xfrm.h index 0a6f34a7a971..74159400eeee 100644 --- a/security/selinux/include/xfrm.h +++ b/security/selinux/include/xfrm.h @@ -23,7 +23,7 @@ int selinux_xfrm_state_alloc_acquire(struct xfrm_state *x, struct xfrm_sec_ctx *polsec, u32 secid); void selinux_xfrm_state_free(struct xfrm_state *x); int selinux_xfrm_state_delete(struct xfrm_state *x); -int selinux_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); +int selinux_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid); int selinux_xfrm_state_pol_flow_match(struct xfrm_state *x, struct xfrm_policy *xp, const struct flowi_common *flic); diff --git a/security/selinux/ss/avtab.c b/security/selinux/ss/avtab.c index 75df32906055..c97695ae508f 100644 --- a/security/selinux/ss/avtab.c +++ b/security/selinux/ss/avtab.c @@ -29,7 +29,7 @@ static struct kmem_cache *avtab_xperms_cachep __ro_after_init; /* Based on MurmurHash3, written by Austin Appleby and placed in the * public domain. */ -static inline int avtab_hash(struct avtab_key *keyp, u32 mask) +static inline int avtab_hash(const struct avtab_key *keyp, u32 mask) { static const u32 c1 = 0xcc9e2d51; static const u32 c2 = 0x1b873593; @@ -68,7 +68,7 @@ static inline int avtab_hash(struct avtab_key *keyp, u32 mask) static struct avtab_node* avtab_insert_node(struct avtab *h, int hvalue, struct avtab_node *prev, struct avtab_node *cur, - struct avtab_key *key, struct avtab_datum *datum) + const struct avtab_key *key, const struct avtab_datum *datum) { struct avtab_node *newnode; struct avtab_extended_perms *xperms; @@ -103,7 +103,8 @@ avtab_insert_node(struct avtab *h, int hvalue, return newnode; } -static int avtab_insert(struct avtab *h, struct avtab_key *key, struct avtab_datum *datum) +static int avtab_insert(struct avtab *h, const struct avtab_key *key, + const struct avtab_datum *datum) { int hvalue; struct avtab_node *prev, *cur, *newnode; @@ -147,8 +148,9 @@ static int avtab_insert(struct avtab *h, struct avtab_key *key, struct avtab_dat * key/specified mask into the table, as needed by the conditional avtab. * It also returns a pointer to the node inserted. */ -struct avtab_node * -avtab_insert_nonunique(struct avtab *h, struct avtab_key *key, struct avtab_datum *datum) +struct avtab_node *avtab_insert_nonunique(struct avtab *h, + const struct avtab_key *key, + const struct avtab_datum *datum) { int hvalue; struct avtab_node *prev, *cur; @@ -178,7 +180,7 @@ avtab_insert_nonunique(struct avtab *h, struct avtab_key *key, struct avtab_datu return avtab_insert_node(h, hvalue, prev, cur, key, datum); } -struct avtab_datum *avtab_search(struct avtab *h, struct avtab_key *key) +struct avtab_datum *avtab_search(struct avtab *h, const struct avtab_key *key) { int hvalue; struct avtab_node *cur; @@ -213,8 +215,8 @@ struct avtab_datum *avtab_search(struct avtab *h, struct avtab_key *key) /* This search function returns a node pointer, and can be used in * conjunction with avtab_search_next_node() */ -struct avtab_node* -avtab_search_node(struct avtab *h, struct avtab_key *key) +struct avtab_node *avtab_search_node(struct avtab *h, + const struct avtab_key *key) { int hvalue; struct avtab_node *cur; @@ -396,8 +398,8 @@ static uint16_t spec_order[] = { }; int avtab_read_item(struct avtab *a, void *fp, struct policydb *pol, - int (*insertf)(struct avtab *a, struct avtab_key *k, - struct avtab_datum *d, void *p), + int (*insertf)(struct avtab *a, const struct avtab_key *k, + const struct avtab_datum *d, void *p), void *p) { __le16 buf16[4]; @@ -557,8 +559,8 @@ int avtab_read_item(struct avtab *a, void *fp, struct policydb *pol, return insertf(a, &key, &datum, p); } -static int avtab_insertf(struct avtab *a, struct avtab_key *k, - struct avtab_datum *d, void *p) +static int avtab_insertf(struct avtab *a, const struct avtab_key *k, + const struct avtab_datum *d, void *p) { return avtab_insert(a, k, d); } @@ -607,7 +609,7 @@ bad: goto out; } -int avtab_write_item(struct policydb *p, struct avtab_node *cur, void *fp) +int avtab_write_item(struct policydb *p, const struct avtab_node *cur, void *fp) { __le16 buf16[4]; __le32 buf32[ARRAY_SIZE(cur->datum.u.xperms->perms.p)]; diff --git a/security/selinux/ss/avtab.h b/security/selinux/ss/avtab.h index f2eeb36265d1..d3ebea8d146f 100644 --- a/security/selinux/ss/avtab.h +++ b/security/selinux/ss/avtab.h @@ -90,24 +90,26 @@ struct avtab { void avtab_init(struct avtab *h); int avtab_alloc(struct avtab *, u32); int avtab_alloc_dup(struct avtab *new, const struct avtab *orig); -struct avtab_datum *avtab_search(struct avtab *h, struct avtab_key *k); +struct avtab_datum *avtab_search(struct avtab *h, const struct avtab_key *k); void avtab_destroy(struct avtab *h); void avtab_hash_eval(struct avtab *h, char *tag); struct policydb; int avtab_read_item(struct avtab *a, void *fp, struct policydb *pol, - int (*insert)(struct avtab *a, struct avtab_key *k, - struct avtab_datum *d, void *p), + int (*insert)(struct avtab *a, const struct avtab_key *k, + const struct avtab_datum *d, void *p), void *p); int avtab_read(struct avtab *a, void *fp, struct policydb *pol); -int avtab_write_item(struct policydb *p, struct avtab_node *cur, void *fp); +int avtab_write_item(struct policydb *p, const struct avtab_node *cur, void *fp); int avtab_write(struct policydb *p, struct avtab *a, void *fp); -struct avtab_node *avtab_insert_nonunique(struct avtab *h, struct avtab_key *key, - struct avtab_datum *datum); +struct avtab_node *avtab_insert_nonunique(struct avtab *h, + const struct avtab_key *key, + const struct avtab_datum *datum); -struct avtab_node *avtab_search_node(struct avtab *h, struct avtab_key *key); +struct avtab_node *avtab_search_node(struct avtab *h, + const struct avtab_key *key); struct avtab_node *avtab_search_node_next(struct avtab_node *node, int specified); diff --git a/security/selinux/ss/conditional.c b/security/selinux/ss/conditional.c index 1ef74c085f2b..2ec6e5cd25d9 100644 --- a/security/selinux/ss/conditional.c +++ b/security/selinux/ss/conditional.c @@ -254,7 +254,8 @@ struct cond_insertf_data { struct cond_av_list *other; }; -static int cond_insertf(struct avtab *a, struct avtab_key *k, struct avtab_datum *d, void *ptr) +static int cond_insertf(struct avtab *a, const struct avtab_key *k, + const struct avtab_datum *d, void *ptr) { struct cond_insertf_data *data = ptr; struct policydb *p = data->p; @@ -628,7 +629,8 @@ static int cond_dup_av_list(struct cond_av_list *new, static int duplicate_policydb_cond_list(struct policydb *newp, struct policydb *origp) { - int rc, i, j; + int rc; + u32 i; rc = avtab_alloc_dup(&newp->te_cond_avtab, &origp->te_cond_avtab); if (rc) @@ -648,12 +650,12 @@ static int duplicate_policydb_cond_list(struct policydb *newp, newp->cond_list_len++; newn->cur_state = orign->cur_state; - newn->expr.nodes = kcalloc(orign->expr.len, - sizeof(*newn->expr.nodes), GFP_KERNEL); + newn->expr.nodes = kmemdup(orign->expr.nodes, + orign->expr.len * sizeof(*orign->expr.nodes), + GFP_KERNEL); if (!newn->expr.nodes) goto error; - for (j = 0; j < orign->expr.len; j++) - newn->expr.nodes[j] = orign->expr.nodes[j]; + newn->expr.len = orign->expr.len; rc = cond_dup_av_list(&newn->true_list, &orign->true_list, diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c index 9fccf417006b..defc5ef35c66 100644 --- a/security/selinux/ss/policydb.c +++ b/security/selinux/ss/policydb.c @@ -2589,7 +2589,6 @@ int policydb_read(struct policydb *p, void *fp) if (rc) goto bad; - rc = -EINVAL; rtk->role = le32_to_cpu(buf[0]); rtk->type = le32_to_cpu(buf[1]); rtd->new_role = le32_to_cpu(buf[2]); diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c index 0a5ce001609b..d84c77f370dc 100644 --- a/security/selinux/ss/services.c +++ b/security/selinux/ss/services.c @@ -859,6 +859,7 @@ int security_validate_transition(struct selinux_state *state, * It returns 0, if @newsid is bounded by @oldsid. * Otherwise, it returns error code. * + * @state: SELinux state * @oldsid : current security identifier * @newsid : destinated security identifier */ @@ -1098,6 +1099,7 @@ allow: /** * security_compute_av - Compute access vector decisions. + * @state: SELinux state * @ssid: source security identifier * @tsid: target security identifier * @tclass: target security class @@ -1386,6 +1388,7 @@ out_unlock: /** * security_sid_to_context - Obtain a context for a given SID. + * @state: SELinux state * @sid: security identifier, SID * @scontext: security context * @scontext_len: length in bytes @@ -1411,6 +1414,7 @@ int security_sid_to_context_force(struct selinux_state *state, u32 sid, /** * security_sid_to_context_inval - Obtain a context for a given SID if it * is invalid. + * @state: SELinux state * @sid: security identifier, SID * @scontext: security context * @scontext_len: length in bytes @@ -1587,6 +1591,7 @@ out: /** * security_context_to_sid - Obtain a SID for a given security context. + * @state: SELinux state * @scontext: security context * @scontext_len: length in bytes * @sid: security identifier, SID @@ -1616,6 +1621,7 @@ int security_context_str_to_sid(struct selinux_state *state, * security_context_to_sid_default - Obtain a SID for a given security context, * falling back to specified default if needed. * + * @state: SELinux state * @scontext: security context * @scontext_len: length in bytes * @sid: security identifier, SID @@ -1907,6 +1913,7 @@ out: /** * security_transition_sid - Compute the SID for a new subject/object. + * @state: SELinux state * @ssid: source security identifier * @tsid: target security identifier * @tclass: target security class @@ -1962,6 +1969,7 @@ int security_member_sid(struct selinux_state *state, /** * security_change_sid - Compute the SID for object relabeling. + * @state: SELinux state * @ssid: source security identifier * @tsid: target security identifier * @tclass: target security class @@ -2060,7 +2068,6 @@ static int convert_context(struct context *oldc, struct context *newc, void *p) context_init(newc); /* Convert the user. */ - rc = -EINVAL; usrdatum = symtab_search(&args->newp->p_users, sym_name(args->oldp, SYM_USERS, oldc->user - 1)); @@ -2069,7 +2076,6 @@ static int convert_context(struct context *oldc, struct context *newc, void *p) newc->user = usrdatum->value; /* Convert the role. */ - rc = -EINVAL; role = symtab_search(&args->newp->p_roles, sym_name(args->oldp, SYM_ROLES, oldc->role - 1)); if (!role) @@ -2077,7 +2083,6 @@ static int convert_context(struct context *oldc, struct context *newc, void *p) newc->role = role->value; /* Convert the type. */ - rc = -EINVAL; typdatum = symtab_search(&args->newp->p_types, sym_name(args->oldp, SYM_TYPES, oldc->type - 1)); @@ -2101,7 +2106,6 @@ static int convert_context(struct context *oldc, struct context *newc, void *p) oc = args->newp->ocontexts[OCON_ISID]; while (oc && oc->sid[0] != SECINITSID_UNLABELED) oc = oc->next; - rc = -EINVAL; if (!oc) { pr_err("SELinux: unable to look up" " the initial SIDs list\n"); @@ -2264,6 +2268,7 @@ void selinux_policy_commit(struct selinux_state *state, /** * security_load_policy - Load a security policy configuration. + * @state: SELinux state * @data: binary policy data * @len: length of data in bytes * @@ -2371,6 +2376,7 @@ err_policy: /** * security_port_sid - Obtain the SID for a port. + * @state: SELinux state * @protocol: protocol number * @port: port number * @out_sid: security identifier @@ -2427,7 +2433,8 @@ out: } /** - * security_pkey_sid - Obtain the SID for a pkey. + * security_ib_pkey_sid - Obtain the SID for a pkey. + * @state: SELinux state * @subnet_prefix: Subnet Prefix * @pkey_num: pkey number * @out_sid: security identifier @@ -2486,6 +2493,7 @@ out: /** * security_ib_endport_sid - Obtain the SID for a subnet management interface. + * @state: SELinux state * @dev_name: device name * @port: port number * @out_sid: security identifier @@ -2544,6 +2552,7 @@ out: /** * security_netif_sid - Obtain the SID for a network interface. + * @state: SELinux state * @name: interface name * @if_sid: interface SID */ @@ -2618,6 +2627,7 @@ static int match_ipv6_addrmask(u32 *input, u32 *addr, u32 *mask) /** * security_node_sid - Obtain the SID for a node (host). + * @state: SELinux state * @domain: communication domain aka address family * @addrp: address * @addrlen: address length in bytes @@ -2711,6 +2721,7 @@ out: /** * security_get_user_sids - Obtain reachable SIDs for a user. + * @state: SELinux state * @fromsid: starting SID * @username: username * @sids: array of reachable SIDs for user @@ -2903,6 +2914,7 @@ out: /** * security_genfs_sid - Obtain a SID for a file in a filesystem + * @state: SELinux state * @fstype: filesystem type * @path: path from root of mount * @sclass: file security class @@ -2947,6 +2959,7 @@ int selinux_policy_genfs_sid(struct selinux_policy *policy, /** * security_fs_use - Determine how to handle labeling for a filesystem. + * @state: SELinux state * @sb: superblock in question */ int security_fs_use(struct selinux_state *state, struct super_block *sb) @@ -3286,6 +3299,7 @@ out_unlock: /** * security_net_peersid_resolve - Compare and resolve two network peer SIDs + * @state: SELinux state * @nlbl_sid: NetLabel SID * @nlbl_type: NetLabel labeling protocol type * @xfrm_sid: XFRM SID @@ -3510,6 +3524,7 @@ int security_get_allow_unknown(struct selinux_state *state) /** * security_policycap_supported - Check for a specific policy capability + * @state: SELinux state * @req_cap: capability * * Description: @@ -3844,6 +3859,7 @@ static void security_netlbl_cache_add(struct netlbl_lsm_secattr *secattr, /** * security_netlbl_secattr_to_sid - Convert a NetLabel secattr to a SELinux SID + * @state: SELinux state * @secattr: the NetLabel packet security attributes * @sid: the SELinux SID * @@ -3926,6 +3942,7 @@ out: /** * security_netlbl_sid_to_secattr - Convert a SELinux SID to a NetLabel secattr + * @state: SELinux state * @sid: the SELinux SID * @secattr: the NetLabel packet security attributes * diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c index 634f3db24da6..be83e5ce4469 100644 --- a/security/selinux/xfrm.c +++ b/security/selinux/xfrm.c @@ -150,7 +150,7 @@ static int selinux_xfrm_delete(struct xfrm_sec_ctx *ctx) * LSM hook implementation that authorizes that a flow can use a xfrm policy * rule. */ -int selinux_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) +int selinux_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) { int rc; 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