From: Daniel Jurgens
Add a type for Infiniband ports and an access vector for subnet
management packets. Implement the ib_port_smp hook to check that the
caller has permission to send and receive SMPs on the end port specified
by the device name and port. Add interface to query the SID for a IB
port, which walks the IB_PORT ocontexts to find an entry for the
given name and port.
Signed-off-by: Daniel Jurgens
---
v2:
- Shorted ib_end_port. Paul Moore
- Pass void blobs to security hooks. Paul Moore
- Log specific IB port info in audit log. Paul Moore
- Don't create a new intial sid, use unlabeled. Stephen Smalley
- Changed "smp" to "manage_subnet". Paul Moore
---
include/linux/lsm_audit.h | 32 --
security/lsm_audit.c|5
security/selinux/hooks.c| 23 +++
security/selinux/include/classmap.h |2 +
security/selinux/include/security.h |2 +
security/selinux/ss/services.c | 42 +++
6 files changed, 94 insertions(+), 12 deletions(-)
diff --git a/include/linux/lsm_audit.h b/include/linux/lsm_audit.h
index 8ff7eae..d2f6bda 100644
--- a/include/linux/lsm_audit.h
+++ b/include/linux/lsm_audit.h
@@ -21,6 +21,7 @@
#include
#include
#include
+#include
struct lsm_network_audit {
int netif;
@@ -50,21 +51,27 @@ struct lsm_pkey_audit {
u16 pkey;
};
+struct lsm_ib_port_audit {
+ chardev_name[IB_DEVICE_NAME_MAX];
+ u8 port;
+};
+
/* Auxiliary data to use in generating the audit record. */
struct common_audit_data {
char type;
-#define LSM_AUDIT_DATA_PATH1
-#define LSM_AUDIT_DATA_NET 2
-#define LSM_AUDIT_DATA_CAP 3
-#define LSM_AUDIT_DATA_IPC 4
-#define LSM_AUDIT_DATA_TASK5
-#define LSM_AUDIT_DATA_KEY 6
-#define LSM_AUDIT_DATA_NONE7
-#define LSM_AUDIT_DATA_KMOD8
-#define LSM_AUDIT_DATA_INODE 9
-#define LSM_AUDIT_DATA_DENTRY 10
-#define LSM_AUDIT_DATA_IOCTL_OP11
-#define LSM_AUDIT_DATA_PKEY12
+#define LSM_AUDIT_DATA_PATH1
+#define LSM_AUDIT_DATA_NET 2
+#define LSM_AUDIT_DATA_CAP 3
+#define LSM_AUDIT_DATA_IPC 4
+#define LSM_AUDIT_DATA_TASK5
+#define LSM_AUDIT_DATA_KEY 6
+#define LSM_AUDIT_DATA_NONE7
+#define LSM_AUDIT_DATA_KMOD8
+#define LSM_AUDIT_DATA_INODE 9
+#define LSM_AUDIT_DATA_DENTRY 10
+#define LSM_AUDIT_DATA_IOCTL_OP11
+#define LSM_AUDIT_DATA_PKEY12
+#define LSM_AUDIT_DATA_IB_PORT 13
union {
struct path path;
struct dentry *dentry;
@@ -82,6 +89,7 @@ struct common_audit_data {
char *kmod_name;
struct lsm_ioctlop_audit *op;
struct lsm_pkey_audit *pkey;
+ struct lsm_ib_port_audit *ib_port;
} u;
/* this union contains LSM specific data */
union {
diff --git a/security/lsm_audit.c b/security/lsm_audit.c
index 2546d82..95632a9 100644
--- a/security/lsm_audit.c
+++ b/security/lsm_audit.c
@@ -410,6 +410,11 @@ static void dump_common_audit_data(struct audit_buffer *ab,
a->u.pkey->pkey, &sbn_pfx);
break;
}
+ case LSM_AUDIT_DATA_IB_PORT:
+ audit_log_format(ab, " device=");
+ audit_log_untrustedstring(ab, a->u.ib_port->dev_name);
+ audit_log_format(ab, " port=%u", a->u.ib_port->port);
+ break;
} /* switch (a->type) */
}
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index d9c4bfa..40ad0e8 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -6017,6 +6017,28 @@ static int selinux_ib_pkey_access(u64 subnet_prefix, u16
pkey_val, void *ib_sec)
INFINIBAND_PKEY__ACCESS, &ad);
}
+static int selinux_ib_port_manage_subnet(const char *dev_name, u8 port, void
*ib_sec)
+{
+ struct common_audit_data ad;
+ int err;
+ u32 sid = 0;
+ struct ib_security_struct *sec = ib_sec;
+ struct lsm_ib_port_audit ib_port;
+
+ err = security_ib_port_sid(dev_name, port, &sid);
+
+ if (err)
+ return err;
+
+ ad.type = LSM_AUDIT_DATA_IB_PORT;
+ strncpy(ib_port.dev_name, dev_name, sizeof(ib_port.dev_name));
+ ib_port.port = port;
+ ad.u.ib_port = &ib_port;
+ return avc_has_perm(sec->sid, sid,
+ SECCLASS_INFINIBAND_PORT,
+ INFINIBAND_PORT__MANAGE_SUBNET, &ad);
+}
+
static int selinux_ib_alloc_security(void **ib_sec)
{
struct ib_security_struct *sec;
@@ -6219,6 +6241,7 @@ static struct security_hook_list selinux_hooks[] = {
LSM_HOOK_INIT(tun_dev_open, selinux_tun_dev_open),
#ifdef CONFIG_SECURITY_INFINIBAND
LSM_HOOK_INIT(ib_pkey_access, selinux_ib_pkey_access),
+ LSM_HOOK_INIT(ib
