Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Security server interface. |
| 3 | * |
| 4 | * Author : Stephen Smalley, <sds@epoch.ncsc.mil> |
| 5 | * |
| 6 | */ |
| 7 | |
| 8 | #ifndef _SELINUX_SECURITY_H_ |
| 9 | #define _SELINUX_SECURITY_H_ |
| 10 | |
Eric Paris | 652bb9b | 2011-02-01 11:05:40 -0500 | [diff] [blame] | 11 | #include <linux/dcache.h> |
Eric Paris | 75834fc | 2009-05-18 10:26:10 -0400 | [diff] [blame] | 12 | #include <linux/magic.h> |
Eric Paris | 2606fd1 | 2010-10-13 16:24:41 -0400 | [diff] [blame] | 13 | #include <linux/types.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include "flask.h" |
| 15 | |
| 16 | #define SECSID_NULL 0x00000000 /* unspecified SID */ |
| 17 | #define SECSID_WILD 0xffffffff /* wildcard SID */ |
| 18 | #define SECCLASS_NULL 0x0000 /* no class */ |
| 19 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | /* Identify specific policy version changes */ |
| 21 | #define POLICYDB_VERSION_BASE 15 |
| 22 | #define POLICYDB_VERSION_BOOL 16 |
| 23 | #define POLICYDB_VERSION_IPV6 17 |
| 24 | #define POLICYDB_VERSION_NLCLASS 18 |
| 25 | #define POLICYDB_VERSION_VALIDATETRANS 19 |
| 26 | #define POLICYDB_VERSION_MLS 19 |
Stephen Smalley | 782ebb9 | 2005-09-03 15:55:16 -0700 | [diff] [blame] | 27 | #define POLICYDB_VERSION_AVTAB 20 |
Darrel Goeddel | f3f8771 | 2006-09-25 23:31:59 -0700 | [diff] [blame] | 28 | #define POLICYDB_VERSION_RANGETRANS 21 |
Paul Moore | 3bb56b2 | 2008-01-29 08:38:19 -0500 | [diff] [blame] | 29 | #define POLICYDB_VERSION_POLCAP 22 |
Eric Paris | 64dbf07 | 2008-03-31 12:17:33 +1100 | [diff] [blame] | 30 | #define POLICYDB_VERSION_PERMISSIVE 23 |
KaiGai Kohei | d9250de | 2008-08-28 16:35:57 +0900 | [diff] [blame] | 31 | #define POLICYDB_VERSION_BOUNDARY 24 |
Eric Paris | 652bb9b | 2011-02-01 11:05:40 -0500 | [diff] [blame] | 32 | #define POLICYDB_VERSION_FILENAME_TRANS 25 |
Harry Ciao | 8023976 | 2011-03-25 13:51:56 +0800 | [diff] [blame] | 33 | #define POLICYDB_VERSION_ROLETRANS 26 |
Eric Paris | aa89326 | 2012-03-20 14:35:12 -0400 | [diff] [blame] | 34 | #define POLICYDB_VERSION_NEW_OBJECT_DEFAULTS 27 |
Eric Paris | eed7795 | 2012-03-20 14:35:12 -0400 | [diff] [blame] | 35 | #define POLICYDB_VERSION_DEFAULT_TYPE 28 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | |
| 37 | /* Range of policy versions we understand*/ |
| 38 | #define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE |
Stephen Smalley | 016b9bd | 2006-09-25 23:31:58 -0700 | [diff] [blame] | 39 | #ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX |
| 40 | #define POLICYDB_VERSION_MAX CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE |
| 41 | #else |
Eric Paris | eed7795 | 2012-03-20 14:35:12 -0400 | [diff] [blame] | 42 | #define POLICYDB_VERSION_MAX POLICYDB_VERSION_DEFAULT_TYPE |
Stephen Smalley | 016b9bd | 2006-09-25 23:31:58 -0700 | [diff] [blame] | 43 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
David P. Quigley | 0d90a7e | 2009-01-16 09:22:02 -0500 | [diff] [blame] | 45 | /* Mask for just the mount related flags */ |
| 46 | #define SE_MNTMASK 0x0f |
| 47 | /* Super block security struct flags for mount options */ |
Eric Paris | cfca030 | 2012-10-09 16:20:08 -0400 | [diff] [blame] | 48 | /* BE CAREFUL, these need to be the low order bits for selinux_get_mnt_opts */ |
Eric Paris | e000752 | 2008-03-05 10:31:54 -0500 | [diff] [blame] | 49 | #define CONTEXT_MNT 0x01 |
| 50 | #define FSCONTEXT_MNT 0x02 |
| 51 | #define ROOTCONTEXT_MNT 0x04 |
| 52 | #define DEFCONTEXT_MNT 0x08 |
Eric Paris | cfca030 | 2012-10-09 16:20:08 -0400 | [diff] [blame] | 53 | #define SBLABEL_MNT 0x10 |
David P. Quigley | 0d90a7e | 2009-01-16 09:22:02 -0500 | [diff] [blame] | 54 | /* Non-mount related flags */ |
Eric Paris | cfca030 | 2012-10-09 16:20:08 -0400 | [diff] [blame] | 55 | #define SE_SBINITIALIZED 0x0100 |
| 56 | #define SE_SBPROC 0x0200 |
Eric Paris | e000752 | 2008-03-05 10:31:54 -0500 | [diff] [blame] | 57 | |
Eric Paris | 832cbd9 | 2008-04-01 13:24:09 -0400 | [diff] [blame] | 58 | #define CONTEXT_STR "context=" |
| 59 | #define FSCONTEXT_STR "fscontext=" |
| 60 | #define ROOTCONTEXT_STR "rootcontext=" |
| 61 | #define DEFCONTEXT_STR "defcontext=" |
David P. Quigley | 11689d4 | 2009-01-16 09:22:03 -0500 | [diff] [blame] | 62 | #define LABELSUPP_STR "seclabel" |
Eric Paris | 832cbd9 | 2008-04-01 13:24:09 -0400 | [diff] [blame] | 63 | |
Paul Moore | 5778eab | 2007-02-28 15:14:22 -0500 | [diff] [blame] | 64 | struct netlbl_lsm_secattr; |
James Morris | bb22f58 | 2006-11-17 23:01:03 -0500 | [diff] [blame] | 65 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | extern int selinux_enabled; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | |
Paul Moore | 3bb56b2 | 2008-01-29 08:38:19 -0500 | [diff] [blame] | 68 | /* Policy capabilities */ |
| 69 | enum { |
| 70 | POLICYDB_CAPABILITY_NETPEER, |
Eric Paris | b0c636b | 2008-02-28 12:58:40 -0500 | [diff] [blame] | 71 | POLICYDB_CAPABILITY_OPENPERM, |
Chris PeBenito | 2be4d74 | 2013-05-03 09:05:39 -0400 | [diff] [blame] | 72 | POLICYDB_CAPABILITY_REDHAT1, |
| 73 | POLICYDB_CAPABILITY_ALWAYSNETWORK, |
Paul Moore | 3bb56b2 | 2008-01-29 08:38:19 -0500 | [diff] [blame] | 74 | __POLICYDB_CAPABILITY_MAX |
| 75 | }; |
| 76 | #define POLICYDB_CAPABILITY_MAX (__POLICYDB_CAPABILITY_MAX - 1) |
| 77 | |
| 78 | extern int selinux_policycap_netpeer; |
Eric Paris | b0c636b | 2008-02-28 12:58:40 -0500 | [diff] [blame] | 79 | extern int selinux_policycap_openperm; |
Chris PeBenito | 2be4d74 | 2013-05-03 09:05:39 -0400 | [diff] [blame] | 80 | extern int selinux_policycap_alwaysnetwork; |
Paul Moore | 3bb56b2 | 2008-01-29 08:38:19 -0500 | [diff] [blame] | 81 | |
KaiGai Kohei | d9250de | 2008-08-28 16:35:57 +0900 | [diff] [blame] | 82 | /* |
| 83 | * type_datum properties |
| 84 | * available at the kernel policy version >= POLICYDB_VERSION_BOUNDARY |
| 85 | */ |
| 86 | #define TYPEDATUM_PROPERTY_PRIMARY 0x0001 |
| 87 | #define TYPEDATUM_PROPERTY_ATTRIBUTE 0x0002 |
| 88 | |
| 89 | /* limitation of boundary depth */ |
| 90 | #define POLICYDB_BOUNDS_MAXDEPTH 4 |
| 91 | |
Guido Trentalancia | 0719aaf | 2010-02-03 16:40:20 +0100 | [diff] [blame] | 92 | int security_mls_enabled(void); |
| 93 | |
Eric Paris | b19d8ea | 2008-04-22 17:46:11 -0400 | [diff] [blame] | 94 | int security_load_policy(void *data, size_t len); |
Eric Paris | 6b69732 | 2011-04-20 10:21:28 -0400 | [diff] [blame] | 95 | int security_read_policy(void **data, size_t *len); |
Eric Paris | cee74f4 | 2010-10-13 17:50:25 -0400 | [diff] [blame] | 96 | size_t security_policydb_len(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
Paul Moore | 3bb56b2 | 2008-01-29 08:38:19 -0500 | [diff] [blame] | 98 | int security_policycap_supported(unsigned int req_cap); |
| 99 | |
Christopher J. PeBenito | e47c8fc | 2007-05-23 09:12:09 -0400 | [diff] [blame] | 100 | #define SEL_VEC_MAX 32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | struct av_decision { |
| 102 | u32 allowed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | u32 auditallow; |
| 104 | u32 auditdeny; |
| 105 | u32 seqno; |
KaiGai Kohei | 8a6f83a | 2009-04-01 10:07:57 +0900 | [diff] [blame] | 106 | u32 flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | }; |
| 108 | |
KaiGai Kohei | 8a6f83a | 2009-04-01 10:07:57 +0900 | [diff] [blame] | 109 | /* definitions of av_decision.flags */ |
| 110 | #define AVD_FLAGS_PERMISSIVE 0x0001 |
Eric Paris | 64dbf07 | 2008-03-31 12:17:33 +1100 | [diff] [blame] | 111 | |
Stephen Smalley | 19439d0 | 2010-01-14 17:28:10 -0500 | [diff] [blame] | 112 | void security_compute_av(u32 ssid, u32 tsid, |
| 113 | u16 tclass, struct av_decision *avd); |
Stephen Smalley | c6d3aaa | 2009-09-30 13:37:50 -0400 | [diff] [blame] | 114 | |
Stephen Smalley | 19439d0 | 2010-01-14 17:28:10 -0500 | [diff] [blame] | 115 | void security_compute_av_user(u32 ssid, u32 tsid, |
| 116 | u16 tclass, struct av_decision *avd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | |
Eric Paris | 652bb9b | 2011-02-01 11:05:40 -0500 | [diff] [blame] | 118 | int security_transition_sid(u32 ssid, u32 tsid, u16 tclass, |
| 119 | const struct qstr *qstr, u32 *out_sid); |
Stephen Smalley | c6d3aaa | 2009-09-30 13:37:50 -0400 | [diff] [blame] | 120 | |
Kohei Kaigai | f50a3ec | 2011-04-01 15:39:26 +0100 | [diff] [blame] | 121 | int security_transition_sid_user(u32 ssid, u32 tsid, u16 tclass, |
| 122 | const char *objname, u32 *out_sid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
| 124 | int security_member_sid(u32 ssid, u32 tsid, |
| 125 | u16 tclass, u32 *out_sid); |
| 126 | |
| 127 | int security_change_sid(u32 ssid, u32 tsid, |
| 128 | u16 tclass, u32 *out_sid); |
| 129 | |
| 130 | int security_sid_to_context(u32 sid, char **scontext, |
| 131 | u32 *scontext_len); |
| 132 | |
Stephen Smalley | 12b29f3 | 2008-05-07 13:03:20 -0400 | [diff] [blame] | 133 | int security_sid_to_context_force(u32 sid, char **scontext, u32 *scontext_len); |
| 134 | |
David Howells | 8f0cfa5 | 2008-04-29 00:59:41 -0700 | [diff] [blame] | 135 | int security_context_to_sid(const char *scontext, u32 scontext_len, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | u32 *out_sid); |
| 137 | |
David Howells | 7bf570d | 2008-04-29 20:52:51 +0100 | [diff] [blame] | 138 | int security_context_to_sid_default(const char *scontext, u32 scontext_len, |
Stephen Smalley | 869ab51 | 2008-04-04 08:46:05 -0400 | [diff] [blame] | 139 | u32 *out_sid, u32 def_sid, gfp_t gfp_flags); |
James Morris | f5c1d5b | 2005-07-28 01:07:37 -0700 | [diff] [blame] | 140 | |
Stephen Smalley | 12b29f3 | 2008-05-07 13:03:20 -0400 | [diff] [blame] | 141 | int security_context_to_sid_force(const char *scontext, u32 scontext_len, |
| 142 | u32 *sid); |
| 143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | int security_get_user_sids(u32 callsid, char *username, |
| 145 | u32 **sids, u32 *nel); |
| 146 | |
Paul Moore | 3e11217 | 2008-04-10 10:48:14 -0400 | [diff] [blame] | 147 | int security_port_sid(u8 protocol, u16 port, u32 *out_sid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | |
Paul Moore | e8bfdb9 | 2008-01-29 08:38:08 -0500 | [diff] [blame] | 149 | int security_netif_sid(char *name, u32 *if_sid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
| 151 | int security_node_sid(u16 domain, void *addr, u32 addrlen, |
| 152 | u32 *out_sid); |
| 153 | |
| 154 | int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid, |
Eric Paris | b19d8ea | 2008-04-22 17:46:11 -0400 | [diff] [blame] | 155 | u16 tclass); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | |
KaiGai Kohei | d9250de | 2008-08-28 16:35:57 +0900 | [diff] [blame] | 157 | int security_bounded_transition(u32 oldsid, u32 newsid); |
| 158 | |
Venkat Yekkirala | 08554d6 | 2006-07-24 23:27:16 -0700 | [diff] [blame] | 159 | int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid); |
| 160 | |
Paul Moore | 220deb9 | 2008-01-29 08:38:23 -0500 | [diff] [blame] | 161 | int security_net_peersid_resolve(u32 nlbl_sid, u32 nlbl_type, |
| 162 | u32 xfrm_sid, |
| 163 | u32 *peer_sid); |
| 164 | |
Christopher J. PeBenito | 55fcf09 | 2007-05-23 09:12:06 -0400 | [diff] [blame] | 165 | int security_get_classes(char ***classes, int *nclasses); |
| 166 | int security_get_permissions(char *class, char ***perms, int *nperms); |
Eric Paris | 3f12070 | 2007-09-21 14:37:10 -0400 | [diff] [blame] | 167 | int security_get_reject_unknown(void); |
| 168 | int security_get_allow_unknown(void); |
Christopher J. PeBenito | 55fcf09 | 2007-05-23 09:12:06 -0400 | [diff] [blame] | 169 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | #define SECURITY_FS_USE_XATTR 1 /* use xattr */ |
| 171 | #define SECURITY_FS_USE_TRANS 2 /* use transition SIDs, e.g. devpts/tmpfs */ |
| 172 | #define SECURITY_FS_USE_TASK 3 /* use task SIDs, e.g. pipefs/sockfs */ |
| 173 | #define SECURITY_FS_USE_GENFS 4 /* use the genfs support */ |
| 174 | #define SECURITY_FS_USE_NONE 5 /* no labeling support */ |
| 175 | #define SECURITY_FS_USE_MNTPOINT 6 /* use mountpoint labeling */ |
David Quigley | eb9ae68 | 2013-05-22 12:50:37 -0400 | [diff] [blame] | 176 | #define SECURITY_FS_USE_NATIVE 7 /* use native label support */ |
| 177 | #define SECURITY_FS_USE_MAX 7 /* Highest SECURITY_FS_USE_XXX */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | |
Eric Paris | a64c54c | 2012-08-24 15:59:07 -0400 | [diff] [blame] | 179 | int security_fs_use(struct super_block *sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | |
| 181 | int security_genfs_sid(const char *fstype, char *name, u16 sclass, |
| 182 | u32 *sid); |
| 183 | |
Paul Moore | 5778eab | 2007-02-28 15:14:22 -0500 | [diff] [blame] | 184 | #ifdef CONFIG_NETLABEL |
| 185 | int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr, |
Paul Moore | 5778eab | 2007-02-28 15:14:22 -0500 | [diff] [blame] | 186 | u32 *sid); |
| 187 | |
| 188 | int security_netlbl_sid_to_secattr(u32 sid, |
| 189 | struct netlbl_lsm_secattr *secattr); |
| 190 | #else |
| 191 | static inline int security_netlbl_secattr_to_sid( |
| 192 | struct netlbl_lsm_secattr *secattr, |
Paul Moore | 5778eab | 2007-02-28 15:14:22 -0500 | [diff] [blame] | 193 | u32 *sid) |
| 194 | { |
| 195 | return -EIDRM; |
| 196 | } |
| 197 | |
| 198 | static inline int security_netlbl_sid_to_secattr(u32 sid, |
| 199 | struct netlbl_lsm_secattr *secattr) |
| 200 | { |
| 201 | return -ENOENT; |
| 202 | } |
| 203 | #endif /* CONFIG_NETLABEL */ |
| 204 | |
James Carter | f0ee2e4 | 2007-04-04 10:11:29 -0400 | [diff] [blame] | 205 | const char *security_get_initial_sid_context(u32 sid); |
| 206 | |
KaiGai Kohei | 1190416 | 2010-09-14 18:28:39 +0900 | [diff] [blame] | 207 | /* |
| 208 | * status notifier using mmap interface |
| 209 | */ |
| 210 | extern struct page *selinux_kernel_status_page(void); |
| 211 | |
| 212 | #define SELINUX_KERNEL_STATUS_VERSION 1 |
KaiGai Kohei | 36f7f28 | 2010-09-30 11:49:55 +0900 | [diff] [blame] | 213 | struct selinux_kernel_status { |
KaiGai Kohei | 1190416 | 2010-09-14 18:28:39 +0900 | [diff] [blame] | 214 | u32 version; /* version number of thie structure */ |
| 215 | u32 sequence; /* sequence number of seqlock logic */ |
| 216 | u32 enforcing; /* current setting of enforcing mode */ |
| 217 | u32 policyload; /* times of policy reloaded */ |
| 218 | u32 deny_unknown; /* current setting of deny_unknown */ |
| 219 | /* |
| 220 | * The version > 0 supports above members. |
| 221 | */ |
| 222 | } __attribute__((packed)); |
| 223 | |
| 224 | extern void selinux_status_update_setenforce(int enforcing); |
| 225 | extern void selinux_status_update_policyload(int seqno); |
James Morris | cc59a58 | 2011-08-17 11:13:31 +1000 | [diff] [blame] | 226 | extern void selinux_complete_init(void); |
James Morris | 58982b7 | 2011-08-17 11:17:14 +1000 | [diff] [blame] | 227 | extern int selinux_disable(void); |
James Morris | ad3fa08 | 2011-08-30 10:50:12 +1000 | [diff] [blame] | 228 | extern void exit_sel_fs(void); |
Al Viro | 765927b | 2012-06-26 21:58:53 +0400 | [diff] [blame] | 229 | extern struct path selinux_null; |
James Morris | ad3fa08 | 2011-08-30 10:50:12 +1000 | [diff] [blame] | 230 | extern struct vfsmount *selinuxfs_mount; |
James Morris | 6a3fbe8 | 2011-08-30 12:09:15 +1000 | [diff] [blame] | 231 | extern void selnl_notify_setenforce(int val); |
| 232 | extern void selnl_notify_policyload(u32 seqno); |
| 233 | extern int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm); |
KaiGai Kohei | 1190416 | 2010-09-14 18:28:39 +0900 | [diff] [blame] | 234 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | #endif /* _SELINUX_SECURITY_H_ */ |
| 236 | |