Commit | Line | Data |
---|---|---|
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 | ||
4bb93983 | 11 | #include <linux/compiler.h> |
652bb9b0 | 12 | #include <linux/dcache.h> |
75834fc3 | 13 | #include <linux/magic.h> |
2606fd1f | 14 | #include <linux/types.h> |
1da177e4 LT |
15 | #include "flask.h" |
16 | ||
17 | #define SECSID_NULL 0x00000000 /* unspecified SID */ | |
18 | #define SECSID_WILD 0xffffffff /* wildcard SID */ | |
19 | #define SECCLASS_NULL 0x0000 /* no class */ | |
20 | ||
1da177e4 LT |
21 | /* Identify specific policy version changes */ |
22 | #define POLICYDB_VERSION_BASE 15 | |
23 | #define POLICYDB_VERSION_BOOL 16 | |
24 | #define POLICYDB_VERSION_IPV6 17 | |
25 | #define POLICYDB_VERSION_NLCLASS 18 | |
26 | #define POLICYDB_VERSION_VALIDATETRANS 19 | |
27 | #define POLICYDB_VERSION_MLS 19 | |
782ebb99 | 28 | #define POLICYDB_VERSION_AVTAB 20 |
f3f87714 | 29 | #define POLICYDB_VERSION_RANGETRANS 21 |
3bb56b25 | 30 | #define POLICYDB_VERSION_POLCAP 22 |
64dbf074 | 31 | #define POLICYDB_VERSION_PERMISSIVE 23 |
d9250dea | 32 | #define POLICYDB_VERSION_BOUNDARY 24 |
652bb9b0 | 33 | #define POLICYDB_VERSION_FILENAME_TRANS 25 |
8023976c | 34 | #define POLICYDB_VERSION_ROLETRANS 26 |
aa893269 | 35 | #define POLICYDB_VERSION_NEW_OBJECT_DEFAULTS 27 |
eed7795d | 36 | #define POLICYDB_VERSION_DEFAULT_TYPE 28 |
a660bec1 | 37 | #define POLICYDB_VERSION_CONSTRAINT_NAMES 29 |
fa1aa143 | 38 | #define POLICYDB_VERSION_XPERMS_IOCTL 30 |
1da177e4 LT |
39 | |
40 | /* Range of policy versions we understand*/ | |
41 | #define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE | |
016b9bdb SS |
42 | #ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX |
43 | #define POLICYDB_VERSION_MAX CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE | |
44 | #else | |
fa1aa143 | 45 | #define POLICYDB_VERSION_MAX POLICYDB_VERSION_XPERMS_IOCTL |
016b9bdb | 46 | #endif |
1da177e4 | 47 | |
0d90a7ec DQ |
48 | /* Mask for just the mount related flags */ |
49 | #define SE_MNTMASK 0x0f | |
50 | /* Super block security struct flags for mount options */ | |
cfca0303 | 51 | /* BE CAREFUL, these need to be the low order bits for selinux_get_mnt_opts */ |
e0007529 EP |
52 | #define CONTEXT_MNT 0x01 |
53 | #define FSCONTEXT_MNT 0x02 | |
54 | #define ROOTCONTEXT_MNT 0x04 | |
55 | #define DEFCONTEXT_MNT 0x08 | |
cfca0303 | 56 | #define SBLABEL_MNT 0x10 |
0d90a7ec | 57 | /* Non-mount related flags */ |
cfca0303 EP |
58 | #define SE_SBINITIALIZED 0x0100 |
59 | #define SE_SBPROC 0x0200 | |
134509d5 | 60 | #define SE_SBGENFS 0x0400 |
e0007529 | 61 | |
832cbd9a EP |
62 | #define CONTEXT_STR "context=" |
63 | #define FSCONTEXT_STR "fscontext=" | |
64 | #define ROOTCONTEXT_STR "rootcontext=" | |
65 | #define DEFCONTEXT_STR "defcontext=" | |
11689d47 | 66 | #define LABELSUPP_STR "seclabel" |
832cbd9a | 67 | |
5778eabd | 68 | struct netlbl_lsm_secattr; |
bb22f580 | 69 | |
1da177e4 | 70 | extern int selinux_enabled; |
1da177e4 | 71 | |
3bb56b25 PM |
72 | /* Policy capabilities */ |
73 | enum { | |
74 | POLICYDB_CAPABILITY_NETPEER, | |
b0c636b9 | 75 | POLICYDB_CAPABILITY_OPENPERM, |
2be4d74f CP |
76 | POLICYDB_CAPABILITY_REDHAT1, |
77 | POLICYDB_CAPABILITY_ALWAYSNETWORK, | |
3bb56b25 PM |
78 | __POLICYDB_CAPABILITY_MAX |
79 | }; | |
80 | #define POLICYDB_CAPABILITY_MAX (__POLICYDB_CAPABILITY_MAX - 1) | |
81 | ||
82 | extern int selinux_policycap_netpeer; | |
b0c636b9 | 83 | extern int selinux_policycap_openperm; |
2be4d74f | 84 | extern int selinux_policycap_alwaysnetwork; |
3bb56b25 | 85 | |
d9250dea KK |
86 | /* |
87 | * type_datum properties | |
88 | * available at the kernel policy version >= POLICYDB_VERSION_BOUNDARY | |
89 | */ | |
90 | #define TYPEDATUM_PROPERTY_PRIMARY 0x0001 | |
91 | #define TYPEDATUM_PROPERTY_ATTRIBUTE 0x0002 | |
92 | ||
93 | /* limitation of boundary depth */ | |
94 | #define POLICYDB_BOUNDS_MAXDEPTH 4 | |
95 | ||
0719aaf5 GT |
96 | int security_mls_enabled(void); |
97 | ||
b19d8eae | 98 | int security_load_policy(void *data, size_t len); |
6b697323 | 99 | int security_read_policy(void **data, size_t *len); |
cee74f47 | 100 | size_t security_policydb_len(void); |
1da177e4 | 101 | |
3bb56b25 PM |
102 | int security_policycap_supported(unsigned int req_cap); |
103 | ||
e47c8fc5 | 104 | #define SEL_VEC_MAX 32 |
1da177e4 LT |
105 | struct av_decision { |
106 | u32 allowed; | |
1da177e4 LT |
107 | u32 auditallow; |
108 | u32 auditdeny; | |
109 | u32 seqno; | |
8a6f83af | 110 | u32 flags; |
1da177e4 LT |
111 | }; |
112 | ||
fa1aa143 JVS |
113 | #define XPERMS_ALLOWED 1 |
114 | #define XPERMS_AUDITALLOW 2 | |
115 | #define XPERMS_DONTAUDIT 4 | |
116 | ||
117 | #define security_xperm_set(perms, x) (perms[x >> 5] |= 1 << (x & 0x1f)) | |
118 | #define security_xperm_test(perms, x) (1 & (perms[x >> 5] >> (x & 0x1f))) | |
119 | struct extended_perms_data { | |
120 | u32 p[8]; | |
121 | }; | |
122 | ||
123 | struct extended_perms_decision { | |
124 | u8 used; | |
125 | u8 driver; | |
126 | struct extended_perms_data *allowed; | |
127 | struct extended_perms_data *auditallow; | |
128 | struct extended_perms_data *dontaudit; | |
129 | }; | |
130 | ||
131 | struct extended_perms { | |
132 | u16 len; /* length associated decision chain */ | |
133 | struct extended_perms_data drivers; /* flag drivers that are used */ | |
134 | }; | |
135 | ||
8a6f83af KK |
136 | /* definitions of av_decision.flags */ |
137 | #define AVD_FLAGS_PERMISSIVE 0x0001 | |
64dbf074 | 138 | |
19439d05 | 139 | void security_compute_av(u32 ssid, u32 tsid, |
fa1aa143 JVS |
140 | u16 tclass, struct av_decision *avd, |
141 | struct extended_perms *xperms); | |
142 | ||
143 | void security_compute_xperms_decision(u32 ssid, u32 tsid, u16 tclass, | |
144 | u8 driver, struct extended_perms_decision *xpermd); | |
c6d3aaa4 | 145 | |
19439d05 SS |
146 | void security_compute_av_user(u32 ssid, u32 tsid, |
147 | u16 tclass, struct av_decision *avd); | |
1da177e4 | 148 | |
652bb9b0 EP |
149 | int security_transition_sid(u32 ssid, u32 tsid, u16 tclass, |
150 | const struct qstr *qstr, u32 *out_sid); | |
c6d3aaa4 | 151 | |
f50a3ec9 KK |
152 | int security_transition_sid_user(u32 ssid, u32 tsid, u16 tclass, |
153 | const char *objname, u32 *out_sid); | |
1da177e4 LT |
154 | |
155 | int security_member_sid(u32 ssid, u32 tsid, | |
156 | u16 tclass, u32 *out_sid); | |
157 | ||
158 | int security_change_sid(u32 ssid, u32 tsid, | |
159 | u16 tclass, u32 *out_sid); | |
160 | ||
161 | int security_sid_to_context(u32 sid, char **scontext, | |
162 | u32 *scontext_len); | |
163 | ||
12b29f34 SS |
164 | int security_sid_to_context_force(u32 sid, char **scontext, u32 *scontext_len); |
165 | ||
8f0cfa52 | 166 | int security_context_to_sid(const char *scontext, u32 scontext_len, |
52a4c640 | 167 | u32 *out_sid, gfp_t gfp); |
1da177e4 | 168 | |
44be2f65 RV |
169 | int security_context_str_to_sid(const char *scontext, u32 *out_sid, gfp_t gfp); |
170 | ||
7bf570dc | 171 | int security_context_to_sid_default(const char *scontext, u32 scontext_len, |
869ab514 | 172 | u32 *out_sid, u32 def_sid, gfp_t gfp_flags); |
f5c1d5b2 | 173 | |
12b29f34 SS |
174 | int security_context_to_sid_force(const char *scontext, u32 scontext_len, |
175 | u32 *sid); | |
176 | ||
1da177e4 LT |
177 | int security_get_user_sids(u32 callsid, char *username, |
178 | u32 **sids, u32 *nel); | |
179 | ||
3e112172 | 180 | int security_port_sid(u8 protocol, u16 port, u32 *out_sid); |
1da177e4 | 181 | |
e8bfdb9d | 182 | int security_netif_sid(char *name, u32 *if_sid); |
1da177e4 LT |
183 | |
184 | int security_node_sid(u16 domain, void *addr, u32 addrlen, | |
185 | u32 *out_sid); | |
186 | ||
187 | int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid, | |
b19d8eae | 188 | u16 tclass); |
1da177e4 | 189 | |
f9df6458 AP |
190 | int security_validate_transition_user(u32 oldsid, u32 newsid, u32 tasksid, |
191 | u16 tclass); | |
192 | ||
d9250dea KK |
193 | int security_bounded_transition(u32 oldsid, u32 newsid); |
194 | ||
08554d6b VY |
195 | int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid); |
196 | ||
220deb96 PM |
197 | int security_net_peersid_resolve(u32 nlbl_sid, u32 nlbl_type, |
198 | u32 xfrm_sid, | |
199 | u32 *peer_sid); | |
200 | ||
55fcf09b CP |
201 | int security_get_classes(char ***classes, int *nclasses); |
202 | int security_get_permissions(char *class, char ***perms, int *nperms); | |
3f12070e EP |
203 | int security_get_reject_unknown(void); |
204 | int security_get_allow_unknown(void); | |
55fcf09b | 205 | |
1da177e4 LT |
206 | #define SECURITY_FS_USE_XATTR 1 /* use xattr */ |
207 | #define SECURITY_FS_USE_TRANS 2 /* use transition SIDs, e.g. devpts/tmpfs */ | |
208 | #define SECURITY_FS_USE_TASK 3 /* use task SIDs, e.g. pipefs/sockfs */ | |
209 | #define SECURITY_FS_USE_GENFS 4 /* use the genfs support */ | |
210 | #define SECURITY_FS_USE_NONE 5 /* no labeling support */ | |
211 | #define SECURITY_FS_USE_MNTPOINT 6 /* use mountpoint labeling */ | |
eb9ae686 DQ |
212 | #define SECURITY_FS_USE_NATIVE 7 /* use native label support */ |
213 | #define SECURITY_FS_USE_MAX 7 /* Highest SECURITY_FS_USE_XXX */ | |
1da177e4 | 214 | |
a64c54cf | 215 | int security_fs_use(struct super_block *sb); |
1da177e4 LT |
216 | |
217 | int security_genfs_sid(const char *fstype, char *name, u16 sclass, | |
218 | u32 *sid); | |
219 | ||
5778eabd PM |
220 | #ifdef CONFIG_NETLABEL |
221 | int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr, | |
5778eabd PM |
222 | u32 *sid); |
223 | ||
224 | int security_netlbl_sid_to_secattr(u32 sid, | |
225 | struct netlbl_lsm_secattr *secattr); | |
226 | #else | |
227 | static inline int security_netlbl_secattr_to_sid( | |
228 | struct netlbl_lsm_secattr *secattr, | |
5778eabd PM |
229 | u32 *sid) |
230 | { | |
231 | return -EIDRM; | |
232 | } | |
233 | ||
234 | static inline int security_netlbl_sid_to_secattr(u32 sid, | |
235 | struct netlbl_lsm_secattr *secattr) | |
236 | { | |
237 | return -ENOENT; | |
238 | } | |
239 | #endif /* CONFIG_NETLABEL */ | |
240 | ||
f0ee2e46 JC |
241 | const char *security_get_initial_sid_context(u32 sid); |
242 | ||
11904167 KK |
243 | /* |
244 | * status notifier using mmap interface | |
245 | */ | |
246 | extern struct page *selinux_kernel_status_page(void); | |
247 | ||
248 | #define SELINUX_KERNEL_STATUS_VERSION 1 | |
36f7f284 | 249 | struct selinux_kernel_status { |
11904167 KK |
250 | u32 version; /* version number of thie structure */ |
251 | u32 sequence; /* sequence number of seqlock logic */ | |
252 | u32 enforcing; /* current setting of enforcing mode */ | |
253 | u32 policyload; /* times of policy reloaded */ | |
254 | u32 deny_unknown; /* current setting of deny_unknown */ | |
255 | /* | |
256 | * The version > 0 supports above members. | |
257 | */ | |
4bb93983 | 258 | } __packed; |
11904167 KK |
259 | |
260 | extern void selinux_status_update_setenforce(int enforcing); | |
261 | extern void selinux_status_update_policyload(int seqno); | |
cc59a582 | 262 | extern void selinux_complete_init(void); |
58982b74 | 263 | extern int selinux_disable(void); |
ad3fa08c | 264 | extern void exit_sel_fs(void); |
765927b2 | 265 | extern struct path selinux_null; |
ad3fa08c | 266 | extern struct vfsmount *selinuxfs_mount; |
6a3fbe81 JM |
267 | extern void selnl_notify_setenforce(int val); |
268 | extern void selnl_notify_policyload(u32 seqno); | |
269 | extern int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm); | |
11904167 | 270 | |
1da177e4 LT |
271 | #endif /* _SELINUX_SECURITY_H_ */ |
272 |