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linux_dsm_epyc7002/security/selinux/include/classmap.h
Stephen Smalley 59438b4647 security,lockdown,selinux: implement SELinux lockdown 
Implement a SELinux hook for lockdown.  If the lockdown module is also
enabled, then a denial by the lockdown module will take precedence over
SELinux, so SELinux can only further restrict lockdown decisions.
The SELinux hook only distinguishes at the granularity of integrity
versus confidentiality similar to the lockdown module, but includes the
full lockdown reason as part of the audit record as a hint in diagnosing
what triggered the denial.  To support this auditing, move the
lockdown_reasons[] string array from being private to the lockdown
module to the security framework so that it can be used by the lsm audit
code and so that it is always available even when the lockdown module
is disabled.

Note that the SELinux implementation allows the integrity and
confidentiality reasons to be controlled independently from one another.
Thus, in an SELinux policy, one could allow operations that specify
an integrity reason while blocking operations that specify a
confidentiality reason. The SELinux hook implementation is
stricter than the lockdown module in validating the provided reason value.

Sample AVC audit output from denials:
avc:  denied  { integrity } for pid=3402 comm="fwupd"
 lockdown_reason="/dev/mem,kmem,port" scontext=system_u:system_r:fwupd_t:s0
 tcontext=system_u:system_r:fwupd_t:s0 tclass=lockdown permissive=0

avc:  denied  { confidentiality } for pid=4628 comm="cp"
 lockdown_reason="/proc/kcore access"
 scontext=unconfined_u:unconfined_r:test_lockdown_integrity_t:s0-s0:c0.c1023
 tcontext=unconfined_u:unconfined_r:test_lockdown_integrity_t:s0-s0:c0.c1023
 tclass=lockdown permissive=0

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Reviewed-by: James Morris <jamorris@linux.microsoft.com>
[PM: some merge fuzz do the the perf hooks]
Signed-off-by: Paul Moore <paul@paul-moore.com>
2019-12-09 17:53:58 -05:00

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/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/capability.h>
#include <linux/socket.h>
#define COMMON_FILE_SOCK_PERMS "ioctl", "read", "write", "create", \
"getattr", "setattr", "lock", "relabelfrom", "relabelto", "append", "map"
#define COMMON_FILE_PERMS COMMON_FILE_SOCK_PERMS, "unlink", "link", \
"rename", "execute", "quotaon", "mounton", "audit_access", \
"open", "execmod", "watch", "watch_mount", "watch_sb", \
"watch_with_perm", "watch_reads"
#define COMMON_SOCK_PERMS COMMON_FILE_SOCK_PERMS, "bind", "connect", \
"listen", "accept", "getopt", "setopt", "shutdown", "recvfrom", \
"sendto", "name_bind"
#define COMMON_IPC_PERMS "create", "destroy", "getattr", "setattr", "read", \
"write", "associate", "unix_read", "unix_write"
#define COMMON_CAP_PERMS "chown", "dac_override", "dac_read_search", \
"fowner", "fsetid", "kill", "setgid", "setuid", "setpcap", \
"linux_immutable", "net_bind_service", "net_broadcast", \
"net_admin", "net_raw", "ipc_lock", "ipc_owner", "sys_module", \
"sys_rawio", "sys_chroot", "sys_ptrace", "sys_pacct", "sys_admin", \
"sys_boot", "sys_nice", "sys_resource", "sys_time", \
"sys_tty_config", "mknod", "lease", "audit_write", \
"audit_control", "setfcap"
#define COMMON_CAP2_PERMS "mac_override", "mac_admin", "syslog", \
"wake_alarm", "block_suspend", "audit_read"
#if CAP_LAST_CAP > CAP_AUDIT_READ
#error New capability defined, please update COMMON_CAP2_PERMS.
#endif
/*
* Note: The name for any socket class should be suffixed by "socket",
* and doesn't contain more than one substr of "socket".
*/
struct security_class_mapping secclass_map[] = {
{ "security",
{ "compute_av", "compute_create", "compute_member",
"check_context", "load_policy", "compute_relabel",
"compute_user", "setenforce", "setbool", "setsecparam",
"setcheckreqprot", "read_policy", "validate_trans", NULL } },
{ "process",
{ "fork", "transition", "sigchld", "sigkill",
"sigstop", "signull", "signal", "ptrace", "getsched", "setsched",
"getsession", "getpgid", "setpgid", "getcap", "setcap", "share",
"getattr", "setexec", "setfscreate", "noatsecure", "siginh",
"setrlimit", "rlimitinh", "dyntransition", "setcurrent",
"execmem", "execstack", "execheap", "setkeycreate",
"setsockcreate", "getrlimit", NULL } },
{ "process2",
{ "nnp_transition", "nosuid_transition", NULL } },
{ "system",
{ "ipc_info", "syslog_read", "syslog_mod",
"syslog_console", "module_request", "module_load", NULL } },
{ "capability",
{ COMMON_CAP_PERMS, NULL } },
{ "filesystem",
{ "mount", "remount", "unmount", "getattr",
"relabelfrom", "relabelto", "associate", "quotamod",
"quotaget", "watch", NULL } },
{ "file",
{ COMMON_FILE_PERMS,
"execute_no_trans", "entrypoint", NULL } },
{ "dir",
{ COMMON_FILE_PERMS, "add_name", "remove_name",
"reparent", "search", "rmdir", NULL } },
{ "fd", { "use", NULL } },
{ "lnk_file",
{ COMMON_FILE_PERMS, NULL } },
{ "chr_file",
{ COMMON_FILE_PERMS, NULL } },
{ "blk_file",
{ COMMON_FILE_PERMS, NULL } },
{ "sock_file",
{ COMMON_FILE_PERMS, NULL } },
{ "fifo_file",
{ COMMON_FILE_PERMS, NULL } },
{ "socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "tcp_socket",
{ COMMON_SOCK_PERMS,
"node_bind", "name_connect",
NULL } },
{ "udp_socket",
{ COMMON_SOCK_PERMS,
"node_bind", NULL } },
{ "rawip_socket",
{ COMMON_SOCK_PERMS,
"node_bind", NULL } },
{ "node",
{ "recvfrom", "sendto", NULL } },
{ "netif",
{ "ingress", "egress", NULL } },
{ "netlink_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "packet_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "key_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "unix_stream_socket",
{ COMMON_SOCK_PERMS, "connectto", NULL } },
{ "unix_dgram_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "sem",
{ COMMON_IPC_PERMS, NULL } },
{ "msg", { "send", "receive", NULL } },
{ "msgq",
{ COMMON_IPC_PERMS, "enqueue", NULL } },
{ "shm",
{ COMMON_IPC_PERMS, "lock", NULL } },
{ "ipc",
{ COMMON_IPC_PERMS, NULL } },
{ "netlink_route_socket",
{ COMMON_SOCK_PERMS,
"nlmsg_read", "nlmsg_write", NULL } },
{ "netlink_tcpdiag_socket",
{ COMMON_SOCK_PERMS,
"nlmsg_read", "nlmsg_write", NULL } },
{ "netlink_nflog_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "netlink_xfrm_socket",
{ COMMON_SOCK_PERMS,
"nlmsg_read", "nlmsg_write", NULL } },
{ "netlink_selinux_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "netlink_iscsi_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "netlink_audit_socket",
{ COMMON_SOCK_PERMS,
"nlmsg_read", "nlmsg_write", "nlmsg_relay", "nlmsg_readpriv",
"nlmsg_tty_audit", NULL } },
{ "netlink_fib_lookup_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "netlink_connector_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "netlink_netfilter_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "netlink_dnrt_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "association",
{ "sendto", "recvfrom", "setcontext", "polmatch", NULL } },
{ "netlink_kobject_uevent_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "netlink_generic_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "netlink_scsitransport_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "netlink_rdma_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "netlink_crypto_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "appletalk_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "packet",
{ "send", "recv", "relabelto", "forward_in", "forward_out", NULL } },
{ "key",
{ "view", "read", "write", "search", "link", "setattr", "create",
NULL } },
{ "dccp_socket",
{ COMMON_SOCK_PERMS,
"node_bind", "name_connect", NULL } },
{ "memprotect", { "mmap_zero", NULL } },
{ "peer", { "recv", NULL } },
{ "capability2",
{ COMMON_CAP2_PERMS, NULL } },
{ "kernel_service", { "use_as_override", "create_files_as", NULL } },
{ "tun_socket",
{ COMMON_SOCK_PERMS, "attach_queue", NULL } },
{ "binder", { "impersonate", "call", "set_context_mgr", "transfer",
NULL } },
{ "cap_userns",
{ COMMON_CAP_PERMS, NULL } },
{ "cap2_userns",
{ COMMON_CAP2_PERMS, NULL } },
{ "sctp_socket",
{ COMMON_SOCK_PERMS,
"node_bind", "name_connect", "association", NULL } },
{ "icmp_socket",
{ COMMON_SOCK_PERMS,
"node_bind", NULL } },
{ "ax25_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "ipx_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "netrom_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "atmpvc_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "x25_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "rose_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "decnet_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "atmsvc_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "rds_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "irda_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "pppox_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "llc_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "can_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "tipc_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "bluetooth_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "iucv_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "rxrpc_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "isdn_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "phonet_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "ieee802154_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "caif_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "alg_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "nfc_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "vsock_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "kcm_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "qipcrtr_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "smc_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "infiniband_pkey",
{ "access", NULL } },
{ "infiniband_endport",
{ "manage_subnet", NULL } },
{ "bpf",
{"map_create", "map_read", "map_write", "prog_load", "prog_run"} },
{ "xdp_socket",
{ COMMON_SOCK_PERMS, NULL } },
{ "perf_event",
{"open", "cpu", "kernel", "tracepoint", "read", "write"} },
{ "lockdown",
{ "integrity", "confidentiality", NULL } },
{ NULL }
};
#if PF_MAX > 45
#error New address family defined, please update secclass_map.
#endif
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