f0ee2e467f
Make the initial SID contexts accessible to userspace via selinuxfs. An initial use of this support will be to make the unlabeled context available to libselinux for use for invalidated userspace SIDs. Signed-off-by: James Carter <jwcart2@tycho.nsa.gov> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
130 lines
3.4 KiB
C
130 lines
3.4 KiB
C
/*
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* Security server interface.
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*
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* Author : Stephen Smalley, <sds@epoch.ncsc.mil>
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*
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*/
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#ifndef _SELINUX_SECURITY_H_
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#define _SELINUX_SECURITY_H_
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#include "flask.h"
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#define SECSID_NULL 0x00000000 /* unspecified SID */
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#define SECSID_WILD 0xffffffff /* wildcard SID */
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#define SECCLASS_NULL 0x0000 /* no class */
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#define SELINUX_MAGIC 0xf97cff8c
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/* Identify specific policy version changes */
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#define POLICYDB_VERSION_BASE 15
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#define POLICYDB_VERSION_BOOL 16
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#define POLICYDB_VERSION_IPV6 17
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#define POLICYDB_VERSION_NLCLASS 18
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#define POLICYDB_VERSION_VALIDATETRANS 19
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#define POLICYDB_VERSION_MLS 19
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#define POLICYDB_VERSION_AVTAB 20
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#define POLICYDB_VERSION_RANGETRANS 21
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/* Range of policy versions we understand*/
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#define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE
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#ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX
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#define POLICYDB_VERSION_MAX CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
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#else
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#define POLICYDB_VERSION_MAX POLICYDB_VERSION_RANGETRANS
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#endif
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struct netlbl_lsm_secattr;
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extern int selinux_enabled;
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extern int selinux_mls_enabled;
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int security_load_policy(void * data, size_t len);
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struct av_decision {
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u32 allowed;
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u32 decided;
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u32 auditallow;
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u32 auditdeny;
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u32 seqno;
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};
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int security_compute_av(u32 ssid, u32 tsid,
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u16 tclass, u32 requested,
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struct av_decision *avd);
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int security_transition_sid(u32 ssid, u32 tsid,
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u16 tclass, u32 *out_sid);
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int security_member_sid(u32 ssid, u32 tsid,
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u16 tclass, u32 *out_sid);
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int security_change_sid(u32 ssid, u32 tsid,
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u16 tclass, u32 *out_sid);
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int security_sid_to_context(u32 sid, char **scontext,
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u32 *scontext_len);
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int security_context_to_sid(char *scontext, u32 scontext_len,
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u32 *out_sid);
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int security_context_to_sid_default(char *scontext, u32 scontext_len, u32 *out_sid, u32 def_sid);
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int security_get_user_sids(u32 callsid, char *username,
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u32 **sids, u32 *nel);
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int security_port_sid(u16 domain, u16 type, u8 protocol, u16 port,
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u32 *out_sid);
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int security_netif_sid(char *name, u32 *if_sid,
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u32 *msg_sid);
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int security_node_sid(u16 domain, void *addr, u32 addrlen,
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u32 *out_sid);
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int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid,
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u16 tclass);
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int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid);
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#define SECURITY_FS_USE_XATTR 1 /* use xattr */
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#define SECURITY_FS_USE_TRANS 2 /* use transition SIDs, e.g. devpts/tmpfs */
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#define SECURITY_FS_USE_TASK 3 /* use task SIDs, e.g. pipefs/sockfs */
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#define SECURITY_FS_USE_GENFS 4 /* use the genfs support */
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#define SECURITY_FS_USE_NONE 5 /* no labeling support */
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#define SECURITY_FS_USE_MNTPOINT 6 /* use mountpoint labeling */
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int security_fs_use(const char *fstype, unsigned int *behavior,
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u32 *sid);
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int security_genfs_sid(const char *fstype, char *name, u16 sclass,
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u32 *sid);
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#ifdef CONFIG_NETLABEL
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int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr,
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u32 base_sid,
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u32 *sid);
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int security_netlbl_sid_to_secattr(u32 sid,
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struct netlbl_lsm_secattr *secattr);
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#else
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static inline int security_netlbl_secattr_to_sid(
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struct netlbl_lsm_secattr *secattr,
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u32 base_sid,
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u32 *sid)
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{
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return -EIDRM;
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}
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static inline int security_netlbl_sid_to_secattr(u32 sid,
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struct netlbl_lsm_secattr *secattr)
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{
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return -ENOENT;
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}
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#endif /* CONFIG_NETLABEL */
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const char *security_get_initial_sid_context(u32 sid);
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#endif /* _SELINUX_SECURITY_H_ */
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