From: Casey Schaufler <casey@schaufler-ca.com> To: casey.schaufler@intel.com, jmorris@namei.org, linux-security-module@vger.kernel.org, selinux@vger.kernel.org Cc: casey@schaufler-ca.com, linux-audit@redhat.com, keescook@chromium.org, john.johansen@canonical.com, penguin-kernel@i-love.sakura.ne.jp, paul@paul-moore.com, sds@tycho.nsa.gov, linux-kernel@vger.kernel.org, Stephen Smalley <stephen.smalley.work@gmail.com>, linux-integrity@vger.kernel.org Subject: [PATCH v32 12/28] LSM: Use lsmblob in security_inode_getsecid Date: Wed, 2 Feb 2022 15:53:07 -0800 [thread overview] Message-ID: <20220202235323.23929-13-casey@schaufler-ca.com> (raw) In-Reply-To: <20220202235323.23929-1-casey@schaufler-ca.com> Change the security_inode_getsecid() interface to fill in a lsmblob structure instead of a u32 secid. This allows for its callers to gather data from all registered LSMs. Data is provided for IMA and audit. Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: John Johansen <john.johansen@canonical.com> Acked-by: Stephen Smalley <stephen.smalley.work@gmail.com> Acked-by: Paul Moore <paul@paul-moore.com> Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> Cc: linux-integrity@vger.kernel.org Cc: linux-audit@redhat.com --- include/linux/security.h | 7 ++++--- kernel/auditsc.c | 6 +++++- security/integrity/ima/ima_policy.c | 7 ++++--- security/security.c | 11 +++++++++-- 4 files changed, 22 insertions(+), 9 deletions(-) diff --git a/include/linux/security.h b/include/linux/security.h index d7781bda147f..b0d1abd082a8 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -455,7 +455,7 @@ int security_inode_getsecurity(struct user_namespace *mnt_userns, 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 lsmblob *blob); int security_inode_copy_up(struct dentry *src, struct cred **new); int security_inode_copy_up_xattr(const char *name); int security_kernfs_init_security(struct kernfs_node *kn_dir, @@ -1001,9 +1001,10 @@ 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 lsmblob *blob) { - *secid = 0; + lsmblob_init(blob, 0); } static inline int security_inode_copy_up(struct dentry *src, struct cred **new) diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 2570bf5979e0..6cd15abb99c7 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -2248,13 +2248,17 @@ static void audit_copy_inode(struct audit_names *name, const struct dentry *dentry, struct inode *inode, unsigned int flags) { + struct lsmblob blob; + name->ino = inode->i_ino; name->dev = inode->i_sb->s_dev; name->mode = inode->i_mode; name->uid = inode->i_uid; name->gid = inode->i_gid; name->rdev = inode->i_rdev; - security_inode_getsecid(inode, &name->osid); + security_inode_getsecid(inode, &blob); + /* scaffolding until osid is updated */ + name->osid = blob.secid[0]; if (flags & AUDIT_INODE_NOEVAL) { name->fcap_ver = -1; return; diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c index 22952efcc0b0..34ecdd7b01f5 100644 --- a/security/integrity/ima/ima_policy.c +++ b/security/integrity/ima/ima_policy.c @@ -625,7 +625,7 @@ static bool ima_match_rules(struct ima_rule_entry *rule, return false; for (i = 0; i < MAX_LSM_RULES; i++) { int rc = 0; - u32 osid; + struct lsmblob lsmdata; if (!rule->lsm[i].rule) { if (!rule->lsm[i].args_p) @@ -637,8 +637,9 @@ static bool ima_match_rules(struct ima_rule_entry *rule, case LSM_OBJ_USER: case LSM_OBJ_ROLE: case LSM_OBJ_TYPE: - security_inode_getsecid(inode, &osid); - rc = ima_filter_rule_match(osid, rule->lsm[i].type, + security_inode_getsecid(inode, &lsmdata); + rc = ima_filter_rule_match(lsmdata.secid[rule->which], + rule->lsm[i].type, Audit_equal, rule->lsm[i].rule, rule->which); diff --git a/security/security.c b/security/security.c index e33fa677181d..0253c925a272 100644 --- a/security/security.c +++ b/security/security.c @@ -1553,9 +1553,16 @@ 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 lsmblob *blob) { - call_void_hook(inode_getsecid, inode, secid); + struct security_hook_list *hp; + + lsmblob_init(blob, 0); + hlist_for_each_entry(hp, &security_hook_heads.inode_getsecid, list) { + if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) + continue; + hp->hook.inode_getsecid(inode, &blob->secid[hp->lsmid->slot]); + } } int security_inode_copy_up(struct dentry *src, struct cred **new) -- 2.31.1
WARNING: multiple messages have this Message-ID (diff)
From: Casey Schaufler <casey@schaufler-ca.com> To: casey.schaufler@intel.com, jmorris@namei.org, linux-security-module@vger.kernel.org, selinux@vger.kernel.org Cc: john.johansen@canonical.com, linux-kernel@vger.kernel.org, linux-audit@redhat.com, linux-integrity@vger.kernel.org, sds@tycho.nsa.gov Subject: [PATCH v32 12/28] LSM: Use lsmblob in security_inode_getsecid Date: Wed, 2 Feb 2022 15:53:07 -0800 [thread overview] Message-ID: <20220202235323.23929-13-casey@schaufler-ca.com> (raw) In-Reply-To: <20220202235323.23929-1-casey@schaufler-ca.com> Change the security_inode_getsecid() interface to fill in a lsmblob structure instead of a u32 secid. This allows for its callers to gather data from all registered LSMs. Data is provided for IMA and audit. Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: John Johansen <john.johansen@canonical.com> Acked-by: Stephen Smalley <stephen.smalley.work@gmail.com> Acked-by: Paul Moore <paul@paul-moore.com> Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> Cc: linux-integrity@vger.kernel.org Cc: linux-audit@redhat.com --- include/linux/security.h | 7 ++++--- kernel/auditsc.c | 6 +++++- security/integrity/ima/ima_policy.c | 7 ++++--- security/security.c | 11 +++++++++-- 4 files changed, 22 insertions(+), 9 deletions(-) diff --git a/include/linux/security.h b/include/linux/security.h index d7781bda147f..b0d1abd082a8 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -455,7 +455,7 @@ int security_inode_getsecurity(struct user_namespace *mnt_userns, 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 lsmblob *blob); int security_inode_copy_up(struct dentry *src, struct cred **new); int security_inode_copy_up_xattr(const char *name); int security_kernfs_init_security(struct kernfs_node *kn_dir, @@ -1001,9 +1001,10 @@ 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 lsmblob *blob) { - *secid = 0; + lsmblob_init(blob, 0); } static inline int security_inode_copy_up(struct dentry *src, struct cred **new) diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 2570bf5979e0..6cd15abb99c7 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -2248,13 +2248,17 @@ static void audit_copy_inode(struct audit_names *name, const struct dentry *dentry, struct inode *inode, unsigned int flags) { + struct lsmblob blob; + name->ino = inode->i_ino; name->dev = inode->i_sb->s_dev; name->mode = inode->i_mode; name->uid = inode->i_uid; name->gid = inode->i_gid; name->rdev = inode->i_rdev; - security_inode_getsecid(inode, &name->osid); + security_inode_getsecid(inode, &blob); + /* scaffolding until osid is updated */ + name->osid = blob.secid[0]; if (flags & AUDIT_INODE_NOEVAL) { name->fcap_ver = -1; return; diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c index 22952efcc0b0..34ecdd7b01f5 100644 --- a/security/integrity/ima/ima_policy.c +++ b/security/integrity/ima/ima_policy.c @@ -625,7 +625,7 @@ static bool ima_match_rules(struct ima_rule_entry *rule, return false; for (i = 0; i < MAX_LSM_RULES; i++) { int rc = 0; - u32 osid; + struct lsmblob lsmdata; if (!rule->lsm[i].rule) { if (!rule->lsm[i].args_p) @@ -637,8 +637,9 @@ static bool ima_match_rules(struct ima_rule_entry *rule, case LSM_OBJ_USER: case LSM_OBJ_ROLE: case LSM_OBJ_TYPE: - security_inode_getsecid(inode, &osid); - rc = ima_filter_rule_match(osid, rule->lsm[i].type, + security_inode_getsecid(inode, &lsmdata); + rc = ima_filter_rule_match(lsmdata.secid[rule->which], + rule->lsm[i].type, Audit_equal, rule->lsm[i].rule, rule->which); diff --git a/security/security.c b/security/security.c index e33fa677181d..0253c925a272 100644 --- a/security/security.c +++ b/security/security.c @@ -1553,9 +1553,16 @@ 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 lsmblob *blob) { - call_void_hook(inode_getsecid, inode, secid); + struct security_hook_list *hp; + + lsmblob_init(blob, 0); + hlist_for_each_entry(hp, &security_hook_heads.inode_getsecid, list) { + if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) + continue; + hp->hook.inode_getsecid(inode, &blob->secid[hp->lsmid->slot]); + } } int security_inode_copy_up(struct dentry *src, struct cred **new) -- 2.31.1 -- Linux-audit mailing list Linux-audit@redhat.com https://listman.redhat.com/mailman/listinfo/linux-audit
next prev parent reply other threads:[~2022-02-03 0:07 UTC|newest] Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <20220202235323.23929-1-casey.ref@schaufler-ca.com> 2022-02-02 23:52 ` [PATCH v32 00/28] LSM: Module stacking for AppArmor Casey Schaufler 2022-02-02 23:52 ` Casey Schaufler 2022-02-02 23:52 ` [PATCH v32 01/28] integrity: disassociate ima_filter_rule from security_audit_rule Casey Schaufler 2022-02-02 23:52 ` Casey Schaufler 2022-02-02 23:52 ` [PATCH v32 02/28] LSM: Infrastructure management of the sock security Casey Schaufler 2022-02-02 23:52 ` Casey Schaufler 2022-02-02 23:52 ` [PATCH v32 03/28] LSM: Add the lsmblob data structure Casey Schaufler 2022-02-02 23:52 ` Casey Schaufler 2022-03-04 10:48 ` Mickaël Salaün 2022-03-04 10:48 ` Mickaël Salaün 2022-03-04 19:14 ` Casey Schaufler 2022-03-04 19:14 ` Casey Schaufler 2022-02-02 23:52 ` [PATCH v32 04/28] LSM: provide lsm name and id slot mappings Casey Schaufler 2022-02-02 23:52 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 05/28] IMA: avoid label collisions with stacked LSMs Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-22 23:20 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 06/28] LSM: Use lsmblob in security_audit_rule_match Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 07/28] LSM: Use lsmblob in security_kernel_act_as Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 08/28] LSM: Use lsmblob in security_secctx_to_secid Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 09/28] LSM: Use lsmblob in security_secid_to_secctx Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 10/28] LSM: Use lsmblob in security_ipc_getsecid Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 11/28] LSM: Use lsmblob in security_current_getsecid Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler [this message] 2022-02-02 23:53 ` [PATCH v32 12/28] LSM: Use lsmblob in security_inode_getsecid Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 13/28] LSM: Use lsmblob in security_cred_getsecid Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-03 5:23 ` kernel test robot 2022-02-03 5:23 ` kernel test robot 2022-02-03 14:07 ` kernel test robot 2022-02-02 23:53 ` [PATCH v32 14/28] LSM: Specify which LSM to display Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 15/28] LSM: Ensure the correct LSM context releaser Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 16/28] LSM: Use lsmcontext in security_secid_to_secctx Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 17/28] LSM: Use lsmcontext in security_inode_getsecctx Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 18/28] LSM: security_secid_to_secctx in netlink netfilter Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 19/28] NET: Store LSM netlabel data in a lsmblob Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 20/28] binder: Pass LSM identifier for confirmation Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 21/28] LSM: Extend security_secid_to_secctx to include module selection Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 22/28] Audit: Keep multiple LSM data in audit_names Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 23/28] Audit: Create audit_stamp structure Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 24/28] Audit: Add framework for auxiliary records Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-03 6:34 ` kernel test robot 2022-02-03 22:33 ` [RFC PATCH] Audit: __audit_log_end() can be static kernel test robot 2022-02-04 1:30 ` [PATCH v32 24/28] Audit: Add framework for auxiliary records kernel test robot 2022-03-02 22:32 ` Casey Schaufler 2022-03-02 22:32 ` Casey Schaufler 2022-03-03 22:27 ` Paul Moore 2022-03-03 22:27 ` Paul Moore 2022-03-03 22:33 ` Casey Schaufler 2022-03-03 22:33 ` Casey Schaufler 2022-03-03 22:43 ` Paul Moore 2022-03-03 22:43 ` Paul Moore 2022-03-03 22:55 ` Casey Schaufler 2022-03-03 22:55 ` Casey Schaufler 2022-03-03 23:36 ` Paul Moore 2022-03-03 23:36 ` Paul Moore 2022-03-04 2:13 ` Casey Schaufler 2022-03-04 2:13 ` Casey Schaufler 2022-03-04 14:43 ` Paul Moore 2022-03-04 14:43 ` Paul Moore 2022-02-02 23:53 ` [PATCH v32 25/28] Audit: Add record for multiple task security contexts Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 26/28] Audit: Add record for multiple object " Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-03 5:23 ` kernel test robot 2022-02-03 5:43 ` kernel test robot 2022-03-03 23:36 ` Paul Moore 2022-03-03 23:36 ` Paul Moore 2022-03-04 1:26 ` Casey Schaufler 2022-03-04 1:26 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 27/28] LSM: Add /proc attr entry for full LSM context Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler 2022-02-02 23:53 ` [PATCH v32 28/28] AppArmor: Remove the exclusive flag Casey Schaufler 2022-02-02 23:53 ` Casey Schaufler
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