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1da177e4 LT |
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 | ||
75834fc3 | 11 | #include <linux/magic.h> |
2606fd1f | 12 | #include <linux/types.h> |
1da177e4 LT |
13 | #include "flask.h" |
14 | ||
15 | #define SECSID_NULL 0x00000000 /* unspecified SID */ | |
16 | #define SECSID_WILD 0xffffffff /* wildcard SID */ | |
17 | #define SECCLASS_NULL 0x0000 /* no class */ | |
18 | ||
1da177e4 LT |
19 | /* Identify specific policy version changes */ |
20 | #define POLICYDB_VERSION_BASE 15 | |
21 | #define POLICYDB_VERSION_BOOL 16 | |
22 | #define POLICYDB_VERSION_IPV6 17 | |
23 | #define POLICYDB_VERSION_NLCLASS 18 | |
24 | #define POLICYDB_VERSION_VALIDATETRANS 19 | |
25 | #define POLICYDB_VERSION_MLS 19 | |
782ebb99 | 26 | #define POLICYDB_VERSION_AVTAB 20 |
f3f87714 | 27 | #define POLICYDB_VERSION_RANGETRANS 21 |
3bb56b25 | 28 | #define POLICYDB_VERSION_POLCAP 22 |
64dbf074 | 29 | #define POLICYDB_VERSION_PERMISSIVE 23 |
d9250dea | 30 | #define POLICYDB_VERSION_BOUNDARY 24 |
1da177e4 LT |
31 | |
32 | /* Range of policy versions we understand*/ | |
33 | #define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE | |
016b9bdb SS |
34 | #ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX |
35 | #define POLICYDB_VERSION_MAX CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE | |
36 | #else | |
d9250dea | 37 | #define POLICYDB_VERSION_MAX POLICYDB_VERSION_BOUNDARY |
016b9bdb | 38 | #endif |
1da177e4 | 39 | |
0d90a7ec DQ |
40 | /* Mask for just the mount related flags */ |
41 | #define SE_MNTMASK 0x0f | |
42 | /* Super block security struct flags for mount options */ | |
e0007529 EP |
43 | #define CONTEXT_MNT 0x01 |
44 | #define FSCONTEXT_MNT 0x02 | |
45 | #define ROOTCONTEXT_MNT 0x04 | |
46 | #define DEFCONTEXT_MNT 0x08 | |
0d90a7ec DQ |
47 | /* Non-mount related flags */ |
48 | #define SE_SBINITIALIZED 0x10 | |
49 | #define SE_SBPROC 0x20 | |
11689d47 | 50 | #define SE_SBLABELSUPP 0x40 |
e0007529 | 51 | |
832cbd9a EP |
52 | #define CONTEXT_STR "context=" |
53 | #define FSCONTEXT_STR "fscontext=" | |
54 | #define ROOTCONTEXT_STR "rootcontext=" | |
55 | #define DEFCONTEXT_STR "defcontext=" | |
11689d47 | 56 | #define LABELSUPP_STR "seclabel" |
832cbd9a | 57 | |
5778eabd | 58 | struct netlbl_lsm_secattr; |
bb22f580 | 59 | |
1da177e4 | 60 | extern int selinux_enabled; |
1da177e4 | 61 | |
3bb56b25 PM |
62 | /* Policy capabilities */ |
63 | enum { | |
64 | POLICYDB_CAPABILITY_NETPEER, | |
b0c636b9 | 65 | POLICYDB_CAPABILITY_OPENPERM, |
3bb56b25 PM |
66 | __POLICYDB_CAPABILITY_MAX |
67 | }; | |
68 | #define POLICYDB_CAPABILITY_MAX (__POLICYDB_CAPABILITY_MAX - 1) | |
69 | ||
70 | extern int selinux_policycap_netpeer; | |
b0c636b9 | 71 | extern int selinux_policycap_openperm; |
3bb56b25 | 72 | |
d9250dea KK |
73 | /* |
74 | * type_datum properties | |
75 | * available at the kernel policy version >= POLICYDB_VERSION_BOUNDARY | |
76 | */ | |
77 | #define TYPEDATUM_PROPERTY_PRIMARY 0x0001 | |
78 | #define TYPEDATUM_PROPERTY_ATTRIBUTE 0x0002 | |
79 | ||
80 | /* limitation of boundary depth */ | |
81 | #define POLICYDB_BOUNDS_MAXDEPTH 4 | |
82 | ||
0719aaf5 GT |
83 | int security_mls_enabled(void); |
84 | ||
b19d8eae | 85 | int security_load_policy(void *data, size_t len); |
cee74f47 EP |
86 | int security_read_policy(void **data, ssize_t *len); |
87 | size_t security_policydb_len(void); | |
1da177e4 | 88 | |
3bb56b25 PM |
89 | int security_policycap_supported(unsigned int req_cap); |
90 | ||
e47c8fc5 | 91 | #define SEL_VEC_MAX 32 |
1da177e4 LT |
92 | struct av_decision { |
93 | u32 allowed; | |
1da177e4 LT |
94 | u32 auditallow; |
95 | u32 auditdeny; | |
96 | u32 seqno; | |
8a6f83af | 97 | u32 flags; |
1da177e4 LT |
98 | }; |
99 | ||
8a6f83af KK |
100 | /* definitions of av_decision.flags */ |
101 | #define AVD_FLAGS_PERMISSIVE 0x0001 | |
64dbf074 | 102 | |
19439d05 SS |
103 | void security_compute_av(u32 ssid, u32 tsid, |
104 | u16 tclass, struct av_decision *avd); | |
c6d3aaa4 | 105 | |
19439d05 SS |
106 | void security_compute_av_user(u32 ssid, u32 tsid, |
107 | u16 tclass, struct av_decision *avd); | |
1da177e4 LT |
108 | |
109 | int security_transition_sid(u32 ssid, u32 tsid, | |
c6d3aaa4 SS |
110 | u16 tclass, u32 *out_sid); |
111 | ||
112 | int security_transition_sid_user(u32 ssid, u32 tsid, | |
113 | u16 tclass, u32 *out_sid); | |
1da177e4 LT |
114 | |
115 | int security_member_sid(u32 ssid, u32 tsid, | |
116 | u16 tclass, u32 *out_sid); | |
117 | ||
118 | int security_change_sid(u32 ssid, u32 tsid, | |
119 | u16 tclass, u32 *out_sid); | |
120 | ||
121 | int security_sid_to_context(u32 sid, char **scontext, | |
122 | u32 *scontext_len); | |
123 | ||
12b29f34 SS |
124 | int security_sid_to_context_force(u32 sid, char **scontext, u32 *scontext_len); |
125 | ||
8f0cfa52 | 126 | int security_context_to_sid(const char *scontext, u32 scontext_len, |
1da177e4 LT |
127 | u32 *out_sid); |
128 | ||
7bf570dc | 129 | int security_context_to_sid_default(const char *scontext, u32 scontext_len, |
869ab514 | 130 | u32 *out_sid, u32 def_sid, gfp_t gfp_flags); |
f5c1d5b2 | 131 | |
12b29f34 SS |
132 | int security_context_to_sid_force(const char *scontext, u32 scontext_len, |
133 | u32 *sid); | |
134 | ||
1da177e4 LT |
135 | int security_get_user_sids(u32 callsid, char *username, |
136 | u32 **sids, u32 *nel); | |
137 | ||
3e112172 | 138 | int security_port_sid(u8 protocol, u16 port, u32 *out_sid); |
1da177e4 | 139 | |
e8bfdb9d | 140 | int security_netif_sid(char *name, u32 *if_sid); |
1da177e4 LT |
141 | |
142 | int security_node_sid(u16 domain, void *addr, u32 addrlen, | |
143 | u32 *out_sid); | |
144 | ||
145 | int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid, | |
b19d8eae | 146 | u16 tclass); |
1da177e4 | 147 | |
d9250dea KK |
148 | int security_bounded_transition(u32 oldsid, u32 newsid); |
149 | ||
08554d6b VY |
150 | int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid); |
151 | ||
220deb96 PM |
152 | int security_net_peersid_resolve(u32 nlbl_sid, u32 nlbl_type, |
153 | u32 xfrm_sid, | |
154 | u32 *peer_sid); | |
155 | ||
55fcf09b CP |
156 | int security_get_classes(char ***classes, int *nclasses); |
157 | int security_get_permissions(char *class, char ***perms, int *nperms); | |
3f12070e EP |
158 | int security_get_reject_unknown(void); |
159 | int security_get_allow_unknown(void); | |
55fcf09b | 160 | |
1da177e4 LT |
161 | #define SECURITY_FS_USE_XATTR 1 /* use xattr */ |
162 | #define SECURITY_FS_USE_TRANS 2 /* use transition SIDs, e.g. devpts/tmpfs */ | |
163 | #define SECURITY_FS_USE_TASK 3 /* use task SIDs, e.g. pipefs/sockfs */ | |
164 | #define SECURITY_FS_USE_GENFS 4 /* use the genfs support */ | |
165 | #define SECURITY_FS_USE_NONE 5 /* no labeling support */ | |
166 | #define SECURITY_FS_USE_MNTPOINT 6 /* use mountpoint labeling */ | |
167 | ||
168 | int security_fs_use(const char *fstype, unsigned int *behavior, | |
089be43e | 169 | u32 *sid); |
1da177e4 LT |
170 | |
171 | int security_genfs_sid(const char *fstype, char *name, u16 sclass, | |
172 | u32 *sid); | |
173 | ||
5778eabd PM |
174 | #ifdef CONFIG_NETLABEL |
175 | int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr, | |
5778eabd PM |
176 | u32 *sid); |
177 | ||
178 | int security_netlbl_sid_to_secattr(u32 sid, | |
179 | struct netlbl_lsm_secattr *secattr); | |
180 | #else | |
181 | static inline int security_netlbl_secattr_to_sid( | |
182 | struct netlbl_lsm_secattr *secattr, | |
5778eabd PM |
183 | u32 *sid) |
184 | { | |
185 | return -EIDRM; | |
186 | } | |
187 | ||
188 | static inline int security_netlbl_sid_to_secattr(u32 sid, | |
189 | struct netlbl_lsm_secattr *secattr) | |
190 | { | |
191 | return -ENOENT; | |
192 | } | |
193 | #endif /* CONFIG_NETLABEL */ | |
194 | ||
f0ee2e46 JC |
195 | const char *security_get_initial_sid_context(u32 sid); |
196 | ||
11904167 KK |
197 | /* |
198 | * status notifier using mmap interface | |
199 | */ | |
200 | extern struct page *selinux_kernel_status_page(void); | |
201 | ||
202 | #define SELINUX_KERNEL_STATUS_VERSION 1 | |
36f7f284 | 203 | struct selinux_kernel_status { |
11904167 KK |
204 | u32 version; /* version number of thie structure */ |
205 | u32 sequence; /* sequence number of seqlock logic */ | |
206 | u32 enforcing; /* current setting of enforcing mode */ | |
207 | u32 policyload; /* times of policy reloaded */ | |
208 | u32 deny_unknown; /* current setting of deny_unknown */ | |
209 | /* | |
210 | * The version > 0 supports above members. | |
211 | */ | |
212 | } __attribute__((packed)); | |
213 | ||
214 | extern void selinux_status_update_setenforce(int enforcing); | |
215 | extern void selinux_status_update_policyload(int seqno); | |
216 | ||
1da177e4 LT |
217 | #endif /* _SELINUX_SECURITY_H_ */ |
218 |