From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- security/selinux/include/audit.h | 65 +++++++ security/selinux/include/avc.h | 179 +++++++++++++++++ security/selinux/include/avc_ss.h | 28 +++ security/selinux/include/classmap.h | 157 +++++++++++++++ security/selinux/include/conditional.h | 22 +++ security/selinux/include/initial_sid_to_string.h | 33 ++++ security/selinux/include/netif.h | 27 +++ security/selinux/include/netlabel.h | 149 ++++++++++++++ security/selinux/include/netnode.h | 34 ++++ security/selinux/include/netport.h | 33 ++++ security/selinux/include/objsec.h | 128 ++++++++++++ security/selinux/include/security.h | 238 +++++++++++++++++++++++ security/selinux/include/xfrm.h | 93 +++++++++ 13 files changed, 1186 insertions(+) create mode 100644 security/selinux/include/audit.h create mode 100644 security/selinux/include/avc.h create mode 100644 security/selinux/include/avc_ss.h create mode 100644 security/selinux/include/classmap.h create mode 100644 security/selinux/include/conditional.h create mode 100644 security/selinux/include/initial_sid_to_string.h create mode 100644 security/selinux/include/netif.h create mode 100644 security/selinux/include/netlabel.h create mode 100644 security/selinux/include/netnode.h create mode 100644 security/selinux/include/netport.h create mode 100644 security/selinux/include/objsec.h create mode 100644 security/selinux/include/security.h create mode 100644 security/selinux/include/xfrm.h (limited to 'security/selinux/include') diff --git a/security/selinux/include/audit.h b/security/selinux/include/audit.h new file mode 100644 index 000000000..1bdf97343 --- /dev/null +++ b/security/selinux/include/audit.h @@ -0,0 +1,65 @@ +/* + * SELinux support for the Audit LSM hooks + * + * Most of below header was moved from include/linux/selinux.h which + * is released under below copyrights: + * + * Author: James Morris + * + * Copyright (C) 2005 Red Hat, Inc., James Morris + * Copyright (C) 2006 Trusted Computer Solutions, Inc. + * Copyright (C) 2006 IBM Corporation, Timothy R. Chavez + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2, + * as published by the Free Software Foundation. + */ + +#ifndef _SELINUX_AUDIT_H +#define _SELINUX_AUDIT_H + +/** + * selinux_audit_rule_init - alloc/init an selinux audit rule structure. + * @field: the field this rule refers to + * @op: the operater the rule uses + * @rulestr: the text "target" of the rule + * @rule: pointer to the new rule structure returned via this + * + * Returns 0 if successful, -errno if not. On success, the rule structure + * will be allocated internally. The caller must free this structure with + * selinux_audit_rule_free() after use. + */ +int selinux_audit_rule_init(u32 field, u32 op, char *rulestr, void **rule); + +/** + * selinux_audit_rule_free - free an selinux audit rule structure. + * @rule: pointer to the audit rule to be freed + * + * This will free all memory associated with the given rule. + * If @rule is NULL, no operation is performed. + */ +void selinux_audit_rule_free(void *rule); + +/** + * selinux_audit_rule_match - determine if a context ID matches a rule. + * @sid: the context ID to check + * @field: the field this rule refers to + * @op: the operater the rule uses + * @rule: pointer to the audit rule to check against + * @actx: the audit context (can be NULL) associated with the check + * + * Returns 1 if the context id matches the rule, 0 if it does not, and + * -errno on failure. + */ +int selinux_audit_rule_match(u32 sid, u32 field, u32 op, void *rule, + struct audit_context *actx); + +/** + * selinux_audit_rule_known - check to see if rule contains selinux fields. + * @rule: rule to be checked + * Returns 1 if there are selinux fields specified in the rule, 0 otherwise. + */ +int selinux_audit_rule_known(struct audit_krule *krule); + +#endif /* _SELINUX_AUDIT_H */ + diff --git a/security/selinux/include/avc.h b/security/selinux/include/avc.h new file mode 100644 index 000000000..ddf8eec03 --- /dev/null +++ b/security/selinux/include/avc.h @@ -0,0 +1,179 @@ +/* + * Access vector cache interface for object managers. + * + * Author : Stephen Smalley, + */ +#ifndef _SELINUX_AVC_H_ +#define _SELINUX_AVC_H_ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "flask.h" +#include "av_permissions.h" +#include "security.h" + +#ifdef CONFIG_SECURITY_SELINUX_DEVELOP +extern int selinux_enforcing; +#else +#define selinux_enforcing 1 +#endif + +/* + * An entry in the AVC. + */ +struct avc_entry; + +struct task_struct; +struct inode; +struct sock; +struct sk_buff; + +/* + * AVC statistics + */ +struct avc_cache_stats { + unsigned int lookups; + unsigned int misses; + unsigned int allocations; + unsigned int reclaims; + unsigned int frees; +}; + +/* + * We only need this data after we have decided to send an audit message. + */ +struct selinux_audit_data { + u32 ssid; + u32 tsid; + u16 tclass; + u32 requested; + u32 audited; + u32 denied; + int result; +}; + +/* + * AVC operations + */ + +void __init avc_init(void); + +static inline u32 avc_audit_required(u32 requested, + struct av_decision *avd, + int result, + u32 auditdeny, + u32 *deniedp) +{ + u32 denied, audited; + denied = requested & ~avd->allowed; + if (unlikely(denied)) { + audited = denied & avd->auditdeny; + /* + * auditdeny is TRICKY! Setting a bit in + * this field means that ANY denials should NOT be audited if + * the policy contains an explicit dontaudit rule for that + * permission. Take notice that this is unrelated to the + * actual permissions that were denied. As an example lets + * assume: + * + * denied == READ + * avd.auditdeny & ACCESS == 0 (not set means explicit rule) + * auditdeny & ACCESS == 1 + * + * We will NOT audit the denial even though the denied + * permission was READ and the auditdeny checks were for + * ACCESS + */ + if (auditdeny && !(auditdeny & avd->auditdeny)) + audited = 0; + } else if (result) + audited = denied = requested; + else + audited = requested & avd->auditallow; + *deniedp = denied; + return audited; +} + +int slow_avc_audit(u32 ssid, u32 tsid, u16 tclass, + u32 requested, u32 audited, u32 denied, int result, + struct common_audit_data *a, + unsigned flags); + +/** + * avc_audit - Audit the granting or denial of permissions. + * @ssid: source security identifier + * @tsid: target security identifier + * @tclass: target security class + * @requested: requested permissions + * @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 + * avc_has_perm() after a permission check, but can also be + * called directly by callers who use avc_has_perm_noaudit() + * in order to separate the permission check from the auditing. + * For example, this separation is useful when the permission check must + * be performed under a lock, to allow the lock to be released + * before calling the auditing code. + */ +static inline int avc_audit(u32 ssid, u32 tsid, + u16 tclass, u32 requested, + struct av_decision *avd, + int result, + struct common_audit_data *a) +{ + u32 audited, denied; + audited = avc_audit_required(requested, avd, result, 0, &denied); + if (likely(!audited)) + return 0; + return slow_avc_audit(ssid, tsid, tclass, + requested, audited, denied, result, + a, 0); +} + +#define AVC_STRICT 1 /* Ignore permissive mode. */ +int avc_has_perm_noaudit(u32 ssid, u32 tsid, + u16 tclass, u32 requested, + unsigned flags, + struct av_decision *avd); + +int avc_has_perm(u32 ssid, u32 tsid, + u16 tclass, u32 requested, + struct common_audit_data *auditdata); + +u32 avc_policy_seqno(void); + +#define AVC_CALLBACK_GRANT 1 +#define AVC_CALLBACK_TRY_REVOKE 2 +#define AVC_CALLBACK_REVOKE 4 +#define AVC_CALLBACK_RESET 8 +#define AVC_CALLBACK_AUDITALLOW_ENABLE 16 +#define AVC_CALLBACK_AUDITALLOW_DISABLE 32 +#define AVC_CALLBACK_AUDITDENY_ENABLE 64 +#define AVC_CALLBACK_AUDITDENY_DISABLE 128 + +int avc_add_callback(int (*callback)(u32 event), u32 events); + +/* Exported to selinuxfs */ +int avc_get_hash_stats(char *page); +extern unsigned int avc_cache_threshold; + +/* Attempt to free avc node cache */ +void avc_disable(void); + +#ifdef CONFIG_SECURITY_SELINUX_AVC_STATS +DECLARE_PER_CPU(struct avc_cache_stats, avc_cache_stats); +#endif + +#endif /* _SELINUX_AVC_H_ */ + diff --git a/security/selinux/include/avc_ss.h b/security/selinux/include/avc_ss.h new file mode 100644 index 000000000..d5c328452 --- /dev/null +++ b/security/selinux/include/avc_ss.h @@ -0,0 +1,28 @@ +/* + * Access vector cache interface for the security server. + * + * Author : Stephen Smalley, + */ +#ifndef _SELINUX_AVC_SS_H_ +#define _SELINUX_AVC_SS_H_ + +#include "flask.h" + +int avc_ss_reset(u32 seqno); + +/* Class/perm mapping support */ +struct security_class_mapping { + const char *name; + const char *perms[sizeof(u32) * 8 + 1]; +}; + +extern struct security_class_mapping secclass_map[]; + +/* + * The security server must be initialized before + * any labeling or access decisions can be provided. + */ +extern int ss_initialized; + +#endif /* _SELINUX_AVC_SS_H_ */ + diff --git a/security/selinux/include/classmap.h b/security/selinux/include/classmap.h new file mode 100644 index 000000000..eccd61b3d --- /dev/null +++ b/security/selinux/include/classmap.h @@ -0,0 +1,157 @@ +#define COMMON_FILE_SOCK_PERMS "ioctl", "read", "write", "create", \ + "getattr", "setattr", "lock", "relabelfrom", "relabelto", "append" + +#define COMMON_FILE_PERMS COMMON_FILE_SOCK_PERMS, "unlink", "link", \ + "rename", "execute", "swapon", "quotaon", "mounton", "audit_access", \ + "open", "execmod" + +#define COMMON_SOCK_PERMS COMMON_FILE_SOCK_PERMS, "bind", "connect", \ + "listen", "accept", "getopt", "setopt", "shutdown", "recvfrom", \ + "sendto", "recv_msg", "send_msg", "name_bind" + +#define COMMON_IPC_PERMS "create", "destroy", "getattr", "setattr", "read", \ + "write", "associate", "unix_read", "unix_write" + +/* + * 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", 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", NULL } }, + { "system", + { "ipc_info", "syslog_read", "syslog_mod", + "syslog_console", "module_request", NULL } }, + { "capability", + { "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", NULL } }, + { "filesystem", + { "mount", "remount", "unmount", "getattr", + "relabelfrom", "relabelto", "transition", "associate", "quotamod", + "quotaget", 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, + "connectto", "newconn", "acceptfrom", "node_bind", "name_connect", + NULL } }, + { "udp_socket", + { COMMON_SOCK_PERMS, + "node_bind", NULL } }, + { "rawip_socket", + { COMMON_SOCK_PERMS, + "node_bind", NULL } }, + { "node", + { "tcp_recv", "tcp_send", "udp_recv", "udp_send", + "rawip_recv", "rawip_send", "enforce_dest", + "dccp_recv", "dccp_send", "recvfrom", "sendto", NULL } }, + { "netif", + { "tcp_recv", "tcp_send", "udp_recv", "udp_send", + "rawip_recv", "rawip_send", "dccp_recv", "dccp_send", + "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", "newconn", "acceptfrom", 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_firewall_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_audit_socket", + { COMMON_SOCK_PERMS, + "nlmsg_read", "nlmsg_write", "nlmsg_relay", "nlmsg_readpriv", + "nlmsg_tty_audit", NULL } }, + { "netlink_ip6fw_socket", + { COMMON_SOCK_PERMS, + "nlmsg_read", "nlmsg_write", NULL } }, + { "netlink_dnrt_socket", + { COMMON_SOCK_PERMS, NULL } }, + { "association", + { "sendto", "recvfrom", "setcontext", "polmatch", NULL } }, + { "netlink_kobject_uevent_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", + { "mac_override", "mac_admin", "syslog", "wake_alarm", "block_suspend", + "audit_read", 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 } }, + { NULL } + }; diff --git a/security/selinux/include/conditional.h b/security/selinux/include/conditional.h new file mode 100644 index 000000000..67ce7a8d8 --- /dev/null +++ b/security/selinux/include/conditional.h @@ -0,0 +1,22 @@ +/* + * Interface to booleans in the security server. This is exported + * for the selinuxfs. + * + * Author: Karl MacMillan + * + * Copyright (C) 2003 - 2004 Tresys Technology, LLC + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, version 2. + */ + +#ifndef _SELINUX_CONDITIONAL_H_ +#define _SELINUX_CONDITIONAL_H_ + +int security_get_bools(int *len, char ***names, int **values); + +int security_set_bools(int len, int *values); + +int security_get_bool_value(int bool); + +#endif diff --git a/security/selinux/include/initial_sid_to_string.h b/security/selinux/include/initial_sid_to_string.h new file mode 100644 index 000000000..a59b64e3f --- /dev/null +++ b/security/selinux/include/initial_sid_to_string.h @@ -0,0 +1,33 @@ +/* This file is automatically generated. Do not edit. */ +static const char *initial_sid_to_string[] = +{ + "null", + "kernel", + "security", + "unlabeled", + "fs", + "file", + "file_labels", + "init", + "any_socket", + "port", + "netif", + "netmsg", + "node", + "igmp_packet", + "icmp_socket", + "tcp_socket", + "sysctl_modprobe", + "sysctl", + "sysctl_fs", + "sysctl_kernel", + "sysctl_net", + "sysctl_net_unix", + "sysctl_vm", + "sysctl_dev", + "kmod", + "policy", + "scmp_packet", + "devnull", +}; + diff --git a/security/selinux/include/netif.h b/security/selinux/include/netif.h new file mode 100644 index 000000000..c72145444 --- /dev/null +++ b/security/selinux/include/netif.h @@ -0,0 +1,27 @@ +/* + * Network interface table. + * + * Network interfaces (devices) do not have a security field, so we + * maintain a table associating each interface with a SID. + * + * Author: James Morris + * + * Copyright (C) 2003 Red Hat, Inc., James Morris + * Copyright (C) 2007 Hewlett-Packard Development Company, L.P. + * Paul Moore + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2, + * as published by the Free Software Foundation. + */ +#ifndef _SELINUX_NETIF_H_ +#define _SELINUX_NETIF_H_ + +#include + +void sel_netif_flush(void); + +int sel_netif_sid(struct net *ns, int ifindex, u32 *sid); + +#endif /* _SELINUX_NETIF_H_ */ + diff --git a/security/selinux/include/netlabel.h b/security/selinux/include/netlabel.h new file mode 100644 index 000000000..8c59b8f15 --- /dev/null +++ b/security/selinux/include/netlabel.h @@ -0,0 +1,149 @@ +/* + * SELinux interface to the NetLabel subsystem + * + * Author: Paul Moore + * + */ + +/* + * (c) Copyright Hewlett-Packard Development Company, L.P., 2006 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef _SELINUX_NETLABEL_H_ +#define _SELINUX_NETLABEL_H_ + +#include +#include +#include +#include +#include +#include + +#include "avc.h" +#include "objsec.h" + +#ifdef CONFIG_NETLABEL +void selinux_netlbl_cache_invalidate(void); + +void selinux_netlbl_err(struct sk_buff *skb, int error, int gateway); + +void selinux_netlbl_sk_security_free(struct sk_security_struct *sksec); +void selinux_netlbl_sk_security_reset(struct sk_security_struct *sksec); + +int selinux_netlbl_skbuff_getsid(struct sk_buff *skb, + u16 family, + u32 *type, + u32 *sid); +int selinux_netlbl_skbuff_setsid(struct sk_buff *skb, + u16 family, + u32 sid); + +int selinux_netlbl_inet_conn_request(struct request_sock *req, u16 family); +void selinux_netlbl_inet_csk_clone(struct sock *sk, u16 family); +int selinux_netlbl_socket_post_create(struct sock *sk, u16 family); +int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec, + struct sk_buff *skb, + u16 family, + struct common_audit_data *ad); +int selinux_netlbl_socket_setsockopt(struct socket *sock, + int level, + int optname); +int selinux_netlbl_socket_connect(struct sock *sk, struct sockaddr *addr); + +#else +static inline void selinux_netlbl_cache_invalidate(void) +{ + return; +} + +static inline void selinux_netlbl_err(struct sk_buff *skb, + int error, + int gateway) +{ + return; +} + +static inline void selinux_netlbl_sk_security_free( + struct sk_security_struct *sksec) +{ + return; +} + +static inline void selinux_netlbl_sk_security_reset( + struct sk_security_struct *sksec) +{ + return; +} + +static inline int selinux_netlbl_skbuff_getsid(struct sk_buff *skb, + u16 family, + u32 *type, + u32 *sid) +{ + *type = NETLBL_NLTYPE_NONE; + *sid = SECSID_NULL; + return 0; +} +static inline int selinux_netlbl_skbuff_setsid(struct sk_buff *skb, + u16 family, + u32 sid) +{ + return 0; +} + +static inline int selinux_netlbl_conn_setsid(struct sock *sk, + struct sockaddr *addr) +{ + return 0; +} + +static inline int selinux_netlbl_inet_conn_request(struct request_sock *req, + u16 family) +{ + return 0; +} +static inline void selinux_netlbl_inet_csk_clone(struct sock *sk, u16 family) +{ + return; +} +static inline int selinux_netlbl_socket_post_create(struct sock *sk, + u16 family) +{ + return 0; +} +static inline int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec, + struct sk_buff *skb, + u16 family, + struct common_audit_data *ad) +{ + return 0; +} +static inline int selinux_netlbl_socket_setsockopt(struct socket *sock, + int level, + int optname) +{ + return 0; +} +static inline int selinux_netlbl_socket_connect(struct sock *sk, + struct sockaddr *addr) +{ + return 0; +} +#endif /* CONFIG_NETLABEL */ + +#endif diff --git a/security/selinux/include/netnode.h b/security/selinux/include/netnode.h new file mode 100644 index 000000000..937668dd3 --- /dev/null +++ b/security/selinux/include/netnode.h @@ -0,0 +1,34 @@ +/* + * Network node table + * + * SELinux must keep a mapping of network nodes to labels/SIDs. This + * mapping is maintained as part of the normal policy but a fast cache is + * needed to reduce the lookup overhead since most of these queries happen on + * a per-packet basis. + * + * Author: Paul Moore + * + */ + +/* + * (c) Copyright Hewlett-Packard Development Company, L.P., 2007 + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef _SELINUX_NETNODE_H +#define _SELINUX_NETNODE_H + +void sel_netnode_flush(void); + +int sel_netnode_sid(void *addr, u16 family, u32 *sid); + +#endif diff --git a/security/selinux/include/netport.h b/security/selinux/include/netport.h new file mode 100644 index 000000000..d1ce896b2 --- /dev/null +++ b/security/selinux/include/netport.h @@ -0,0 +1,33 @@ +/* + * Network port table + * + * SELinux must keep a mapping of network ports to labels/SIDs. This + * mapping is maintained as part of the normal policy but a fast cache is + * needed to reduce the lookup overhead. + * + * Author: Paul Moore + * + */ + +/* + * (c) Copyright Hewlett-Packard Development Company, L.P., 2008 + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef _SELINUX_NETPORT_H +#define _SELINUX_NETPORT_H + +void sel_netport_flush(void); + +int sel_netport_sid(u8 protocol, u16 pnum, u32 *sid); + +#endif diff --git a/security/selinux/include/objsec.h b/security/selinux/include/objsec.h new file mode 100644 index 000000000..81fa718d5 --- /dev/null +++ b/security/selinux/include/objsec.h @@ -0,0 +1,128 @@ +/* + * NSA Security-Enhanced Linux (SELinux) security module + * + * This file contains the SELinux security data structures for kernel objects. + * + * Author(s): Stephen Smalley, + * Chris Vance, + * Wayne Salamon, + * James Morris + * + * Copyright (C) 2001,2002 Networks Associates Technology, Inc. + * Copyright (C) 2003 Red Hat, Inc., James Morris + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2, + * as published by the Free Software Foundation. + */ +#ifndef _SELINUX_OBJSEC_H_ +#define _SELINUX_OBJSEC_H_ + +#include +#include +#include +#include +#include +#include +#include +#include "flask.h" +#include "avc.h" + +struct task_security_struct { + u32 osid; /* SID prior to last execve */ + u32 sid; /* current SID */ + u32 exec_sid; /* exec SID */ + u32 create_sid; /* fscreate SID */ + u32 keycreate_sid; /* keycreate SID */ + u32 sockcreate_sid; /* fscreate SID */ +}; + +struct inode_security_struct { + struct inode *inode; /* back pointer to inode object */ + union { + struct list_head list; /* list of inode_security_struct */ + struct rcu_head rcu; /* for freeing the inode_security_struct */ + }; + u32 task_sid; /* SID of creating task */ + u32 sid; /* SID of this object */ + u16 sclass; /* security class of this object */ + unsigned char initialized; /* initialization flag */ + struct mutex lock; +}; + +struct file_security_struct { + u32 sid; /* SID of open file description */ + u32 fown_sid; /* SID of file owner (for SIGIO) */ + u32 isid; /* SID of inode at the time of file open */ + u32 pseqno; /* Policy seqno at the time of file open */ +}; + +struct superblock_security_struct { + struct super_block *sb; /* back pointer to sb object */ + u32 sid; /* SID of file system superblock */ + u32 def_sid; /* default SID for labeling */ + u32 mntpoint_sid; /* SECURITY_FS_USE_MNTPOINT context for files */ + unsigned short behavior; /* labeling behavior */ + unsigned short flags; /* which mount options were specified */ + struct mutex lock; + struct list_head isec_head; + spinlock_t isec_lock; +}; + +struct msg_security_struct { + u32 sid; /* SID of message */ +}; + +struct ipc_security_struct { + u16 sclass; /* security class of this object */ + u32 sid; /* SID of IPC resource */ +}; + +struct netif_security_struct { + struct net *ns; /* network namespace */ + int ifindex; /* device index */ + u32 sid; /* SID for this interface */ +}; + +struct netnode_security_struct { + union { + __be32 ipv4; /* IPv4 node address */ + struct in6_addr ipv6; /* IPv6 node address */ + } addr; + u32 sid; /* SID for this node */ + u16 family; /* address family */ +}; + +struct netport_security_struct { + u32 sid; /* SID for this node */ + u16 port; /* port number */ + u8 protocol; /* transport protocol */ +}; + +struct sk_security_struct { +#ifdef CONFIG_NETLABEL + enum { /* NetLabel state */ + NLBL_UNSET = 0, + NLBL_REQUIRE, + NLBL_LABELED, + NLBL_REQSKB, + NLBL_CONNLABELED, + } nlbl_state; + struct netlbl_lsm_secattr *nlbl_secattr; /* NetLabel sec attributes */ +#endif + u32 sid; /* SID of this object */ + u32 peer_sid; /* SID of peer */ + u16 sclass; /* sock security class */ +}; + +struct tun_security_struct { + u32 sid; /* SID for the tun device sockets */ +}; + +struct key_security_struct { + u32 sid; /* SID of key */ +}; + +extern unsigned int selinux_checkreqprot; + +#endif /* _SELINUX_OBJSEC_H_ */ diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h new file mode 100644 index 000000000..d1e0b239b --- /dev/null +++ b/security/selinux/include/security.h @@ -0,0 +1,238 @@ +/* + * Security server interface. + * + * Author : Stephen Smalley, + * + */ + +#ifndef _SELINUX_SECURITY_H_ +#define _SELINUX_SECURITY_H_ + +#include +#include +#include +#include +#include "flask.h" + +#define SECSID_NULL 0x00000000 /* unspecified SID */ +#define SECSID_WILD 0xffffffff /* wildcard SID */ +#define SECCLASS_NULL 0x0000 /* no class */ + +/* Identify specific policy version changes */ +#define POLICYDB_VERSION_BASE 15 +#define POLICYDB_VERSION_BOOL 16 +#define POLICYDB_VERSION_IPV6 17 +#define POLICYDB_VERSION_NLCLASS 18 +#define POLICYDB_VERSION_VALIDATETRANS 19 +#define POLICYDB_VERSION_MLS 19 +#define POLICYDB_VERSION_AVTAB 20 +#define POLICYDB_VERSION_RANGETRANS 21 +#define POLICYDB_VERSION_POLCAP 22 +#define POLICYDB_VERSION_PERMISSIVE 23 +#define POLICYDB_VERSION_BOUNDARY 24 +#define POLICYDB_VERSION_FILENAME_TRANS 25 +#define POLICYDB_VERSION_ROLETRANS 26 +#define POLICYDB_VERSION_NEW_OBJECT_DEFAULTS 27 +#define POLICYDB_VERSION_DEFAULT_TYPE 28 +#define POLICYDB_VERSION_CONSTRAINT_NAMES 29 + +/* Range of policy versions we understand*/ +#define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE +#ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX +#define POLICYDB_VERSION_MAX CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE +#else +#define POLICYDB_VERSION_MAX POLICYDB_VERSION_CONSTRAINT_NAMES +#endif + +/* Mask for just the mount related flags */ +#define SE_MNTMASK 0x0f +/* Super block security struct flags for mount options */ +/* BE CAREFUL, these need to be the low order bits for selinux_get_mnt_opts */ +#define CONTEXT_MNT 0x01 +#define FSCONTEXT_MNT 0x02 +#define ROOTCONTEXT_MNT 0x04 +#define DEFCONTEXT_MNT 0x08 +#define SBLABEL_MNT 0x10 +/* Non-mount related flags */ +#define SE_SBINITIALIZED 0x0100 +#define SE_SBPROC 0x0200 + +#define CONTEXT_STR "context=" +#define FSCONTEXT_STR "fscontext=" +#define ROOTCONTEXT_STR "rootcontext=" +#define DEFCONTEXT_STR "defcontext=" +#define LABELSUPP_STR "seclabel" + +struct netlbl_lsm_secattr; + +extern int selinux_enabled; + +/* Policy capabilities */ +enum { + POLICYDB_CAPABILITY_NETPEER, + POLICYDB_CAPABILITY_OPENPERM, + POLICYDB_CAPABILITY_REDHAT1, + POLICYDB_CAPABILITY_ALWAYSNETWORK, + __POLICYDB_CAPABILITY_MAX +}; +#define POLICYDB_CAPABILITY_MAX (__POLICYDB_CAPABILITY_MAX - 1) + +extern int selinux_policycap_netpeer; +extern int selinux_policycap_openperm; +extern int selinux_policycap_alwaysnetwork; + +/* + * type_datum properties + * available at the kernel policy version >= POLICYDB_VERSION_BOUNDARY + */ +#define TYPEDATUM_PROPERTY_PRIMARY 0x0001 +#define TYPEDATUM_PROPERTY_ATTRIBUTE 0x0002 + +/* limitation of boundary depth */ +#define POLICYDB_BOUNDS_MAXDEPTH 4 + +int security_mls_enabled(void); + +int security_load_policy(void *data, size_t len); +int security_read_policy(void **data, size_t *len); +size_t security_policydb_len(void); + +int security_policycap_supported(unsigned int req_cap); + +#define SEL_VEC_MAX 32 +struct av_decision { + u32 allowed; + u32 auditallow; + u32 auditdeny; + u32 seqno; + u32 flags; +}; + +/* definitions of av_decision.flags */ +#define AVD_FLAGS_PERMISSIVE 0x0001 + +void security_compute_av(u32 ssid, u32 tsid, + u16 tclass, struct av_decision *avd); + +void security_compute_av_user(u32 ssid, u32 tsid, + u16 tclass, struct av_decision *avd); + +int security_transition_sid(u32 ssid, u32 tsid, u16 tclass, + const struct qstr *qstr, u32 *out_sid); + +int security_transition_sid_user(u32 ssid, u32 tsid, u16 tclass, + const char *objname, u32 *out_sid); + +int security_member_sid(u32 ssid, u32 tsid, + u16 tclass, u32 *out_sid); + +int security_change_sid(u32 ssid, u32 tsid, + u16 tclass, u32 *out_sid); + +int security_sid_to_context(u32 sid, char **scontext, + u32 *scontext_len); + +int security_sid_to_context_force(u32 sid, char **scontext, u32 *scontext_len); + +int security_context_to_sid(const char *scontext, u32 scontext_len, + u32 *out_sid, gfp_t gfp); + +int security_context_to_sid_default(const char *scontext, u32 scontext_len, + u32 *out_sid, u32 def_sid, gfp_t gfp_flags); + +int security_context_to_sid_force(const char *scontext, u32 scontext_len, + u32 *sid); + +int security_get_user_sids(u32 callsid, char *username, + u32 **sids, u32 *nel); + +int security_port_sid(u8 protocol, u16 port, u32 *out_sid); + +int security_netif_sid(char *name, u32 *if_sid); + +int security_node_sid(u16 domain, void *addr, u32 addrlen, + u32 *out_sid); + +int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid, + u16 tclass); + +int security_bounded_transition(u32 oldsid, u32 newsid); + +int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid); + +int security_net_peersid_resolve(u32 nlbl_sid, u32 nlbl_type, + u32 xfrm_sid, + u32 *peer_sid); + +int security_get_classes(char ***classes, int *nclasses); +int security_get_permissions(char *class, char ***perms, int *nperms); +int security_get_reject_unknown(void); +int security_get_allow_unknown(void); + +#define SECURITY_FS_USE_XATTR 1 /* use xattr */ +#define SECURITY_FS_USE_TRANS 2 /* use transition SIDs, e.g. devpts/tmpfs */ +#define SECURITY_FS_USE_TASK 3 /* use task SIDs, e.g. pipefs/sockfs */ +#define SECURITY_FS_USE_GENFS 4 /* use the genfs support */ +#define SECURITY_FS_USE_NONE 5 /* no labeling support */ +#define SECURITY_FS_USE_MNTPOINT 6 /* use mountpoint labeling */ +#define SECURITY_FS_USE_NATIVE 7 /* use native label support */ +#define SECURITY_FS_USE_MAX 7 /* Highest SECURITY_FS_USE_XXX */ + +int security_fs_use(struct super_block *sb); + +int security_genfs_sid(const char *fstype, char *name, u16 sclass, + u32 *sid); + +#ifdef CONFIG_NETLABEL +int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr, + u32 *sid); + +int security_netlbl_sid_to_secattr(u32 sid, + struct netlbl_lsm_secattr *secattr); +#else +static inline int security_netlbl_secattr_to_sid( + struct netlbl_lsm_secattr *secattr, + u32 *sid) +{ + return -EIDRM; +} + +static inline int security_netlbl_sid_to_secattr(u32 sid, + struct netlbl_lsm_secattr *secattr) +{ + return -ENOENT; +} +#endif /* CONFIG_NETLABEL */ + +const char *security_get_initial_sid_context(u32 sid); + +/* + * status notifier using mmap interface + */ +extern struct page *selinux_kernel_status_page(void); + +#define SELINUX_KERNEL_STATUS_VERSION 1 +struct selinux_kernel_status { + u32 version; /* version number of thie structure */ + u32 sequence; /* sequence number of seqlock logic */ + u32 enforcing; /* current setting of enforcing mode */ + u32 policyload; /* times of policy reloaded */ + u32 deny_unknown; /* current setting of deny_unknown */ + /* + * The version > 0 supports above members. + */ +} __packed; + +extern void selinux_status_update_setenforce(int enforcing); +extern void selinux_status_update_policyload(int seqno); +extern void selinux_complete_init(void); +extern int selinux_disable(void); +extern void exit_sel_fs(void); +extern struct path selinux_null; +extern struct vfsmount *selinuxfs_mount; +extern void selnl_notify_setenforce(int val); +extern void selnl_notify_policyload(u32 seqno); +extern int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm); + +#endif /* _SELINUX_SECURITY_H_ */ + diff --git a/security/selinux/include/xfrm.h b/security/selinux/include/xfrm.h new file mode 100644 index 000000000..1450f85b9 --- /dev/null +++ b/security/selinux/include/xfrm.h @@ -0,0 +1,93 @@ +/* + * SELinux support for the XFRM LSM hooks + * + * Author : Trent Jaeger, + * Updated : Venkat Yekkirala, + */ +#ifndef _SELINUX_XFRM_H_ +#define _SELINUX_XFRM_H_ + +#include + +int selinux_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, + struct xfrm_user_sec_ctx *uctx, + gfp_t gfp); +int selinux_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, + struct xfrm_sec_ctx **new_ctxp); +void selinux_xfrm_policy_free(struct xfrm_sec_ctx *ctx); +int selinux_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); +int selinux_xfrm_state_alloc(struct xfrm_state *x, + struct xfrm_user_sec_ctx *uctx); +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_state_pol_flow_match(struct xfrm_state *x, + struct xfrm_policy *xp, + const struct flowi *fl); + +#ifdef CONFIG_SECURITY_NETWORK_XFRM +extern atomic_t selinux_xfrm_refcount; + +static inline int selinux_xfrm_enabled(void) +{ + return (atomic_read(&selinux_xfrm_refcount) > 0); +} + +int selinux_xfrm_sock_rcv_skb(u32 sk_sid, struct sk_buff *skb, + struct common_audit_data *ad); +int selinux_xfrm_postroute_last(u32 sk_sid, struct sk_buff *skb, + struct common_audit_data *ad, u8 proto); +int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall); +int selinux_xfrm_skb_sid(struct sk_buff *skb, u32 *sid); + +static inline void selinux_xfrm_notify_policyload(void) +{ + struct net *net; + + rtnl_lock(); + for_each_net(net) { + atomic_inc(&net->xfrm.flow_cache_genid); + rt_genid_bump_all(net); + } + rtnl_unlock(); +} +#else +static inline int selinux_xfrm_enabled(void) +{ + return 0; +} + +static inline int selinux_xfrm_sock_rcv_skb(u32 sk_sid, struct sk_buff *skb, + struct common_audit_data *ad) +{ + return 0; +} + +static inline int selinux_xfrm_postroute_last(u32 sk_sid, struct sk_buff *skb, + struct common_audit_data *ad, + u8 proto) +{ + return 0; +} + +static inline int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, + int ckall) +{ + *sid = SECSID_NULL; + return 0; +} + +static inline void selinux_xfrm_notify_policyload(void) +{ +} + +static inline int selinux_xfrm_skb_sid(struct sk_buff *skb, u32 *sid) +{ + *sid = SECSID_NULL; + return 0; +} +#endif + +#endif /* _SELINUX_XFRM_H_ */ -- cgit v1.2.3-54-g00ecf