Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 385 insertions, 0 deletions

diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h
new file mode 100644
index 0000000000..a9de89af8f
--- /dev/null
+++ b/security/selinux/include/security.h
@@ -0,0 +1,385 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Security server interface.
+ *
+ * Author : Stephen Smalley, <stephen.smalley.work@gmail.com>
+ *
+ */
+
+#ifndef _SELINUX_SECURITY_H_
+#define _SELINUX_SECURITY_H_
+
+#include <linux/compiler.h>
+#include <linux/dcache.h>
+#include <linux/magic.h>
+#include <linux/types.h>
+#include <linux/rcupdate.h>
+#include <linux/refcount.h>
+#include <linux/workqueue.h>
+#include <linux/delay.h>
+#include <linux/printk.h>
+#include "flask.h"
+#include "policycap.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
+#define POLICYDB_VERSION_XPERMS_IOCTL	30
+#define POLICYDB_VERSION_INFINIBAND		31
+#define POLICYDB_VERSION_GLBLUB		32
+#define POLICYDB_VERSION_COMP_FTRANS	33 /* compressed filename transitions */
+
+/* Range of policy versions we understand*/
+#define POLICYDB_VERSION_MIN   POLICYDB_VERSION_BASE
+#define POLICYDB_VERSION_MAX   POLICYDB_VERSION_COMP_FTRANS
+
+/* 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 SE_SBGENFS		0x0400
+#define SE_SBGENFS_XATTR	0x0800
+#define SE_SBNATIVE		0x1000
+
+#define CONTEXT_STR	"context"
+#define FSCONTEXT_STR	"fscontext"
+#define ROOTCONTEXT_STR	"rootcontext"
+#define DEFCONTEXT_STR	"defcontext"
+#define SECLABEL_STR "seclabel"
+
+struct netlbl_lsm_secattr;
+
+extern int selinux_enabled_boot;
+
+/*
+ * 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
+
+struct selinux_policy;
+
+struct selinux_state {
+#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
+	bool enforcing;
+#endif
+	bool initialized;
+	bool policycap[__POLICYDB_CAP_MAX];
+
+	struct page *status_page;
+	struct mutex status_lock;
+
+	struct selinux_policy __rcu *policy;
+	struct mutex policy_mutex;
+} __randomize_layout;
+
+void selinux_avc_init(void);
+
+extern struct selinux_state selinux_state;
+
+static inline bool selinux_initialized(void)
+{
+	/* do a synchronized load to avoid race conditions */
+	return smp_load_acquire(&selinux_state.initialized);
+}
+
+static inline void selinux_mark_initialized(void)
+{
+	/* do a synchronized write to avoid race conditions */
+	smp_store_release(&selinux_state.initialized, true);
+}
+
+#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
+static inline bool enforcing_enabled(void)
+{
+	return READ_ONCE(selinux_state.enforcing);
+}
+
+static inline void enforcing_set(bool value)
+{
+	WRITE_ONCE(selinux_state.enforcing, value);
+}
+#else
+static inline bool enforcing_enabled(void)
+{
+	return true;
+}
+
+static inline void enforcing_set(bool value)
+{
+}
+#endif
+
+static inline bool checkreqprot_get(void)
+{
+	/* non-zero/true checkreqprot values are no longer supported */
+	return 0;
+}
+
+static inline bool selinux_policycap_netpeer(void)
+{
+	return READ_ONCE(selinux_state.policycap[POLICYDB_CAP_NETPEER]);
+}
+
+static inline bool selinux_policycap_openperm(void)
+{
+	return READ_ONCE(selinux_state.policycap[POLICYDB_CAP_OPENPERM]);
+}
+
+static inline bool selinux_policycap_extsockclass(void)
+{
+	return READ_ONCE(selinux_state.policycap[POLICYDB_CAP_EXTSOCKCLASS]);
+}
+
+static inline bool selinux_policycap_alwaysnetwork(void)
+{
+	return READ_ONCE(selinux_state.policycap[POLICYDB_CAP_ALWAYSNETWORK]);
+}
+
+static inline bool selinux_policycap_cgroupseclabel(void)
+{
+	return READ_ONCE(selinux_state.policycap[POLICYDB_CAP_CGROUPSECLABEL]);
+}
+
+static inline bool selinux_policycap_nnp_nosuid_transition(void)
+{
+	return READ_ONCE(
+		selinux_state.policycap[POLICYDB_CAP_NNP_NOSUID_TRANSITION]);
+}
+
+static inline bool selinux_policycap_genfs_seclabel_symlinks(void)
+{
+	return READ_ONCE(
+		selinux_state.policycap[POLICYDB_CAP_GENFS_SECLABEL_SYMLINKS]);
+}
+
+static inline bool selinux_policycap_ioctl_skip_cloexec(void)
+{
+	return READ_ONCE(
+		selinux_state.policycap[POLICYDB_CAP_IOCTL_SKIP_CLOEXEC]);
+}
+
+struct selinux_policy_convert_data;
+
+struct selinux_load_state {
+	struct selinux_policy *policy;
+	struct selinux_policy_convert_data *convert_data;
+};
+
+int security_mls_enabled(void);
+int security_load_policy(void *data, size_t len,
+			 struct selinux_load_state *load_state);
+void selinux_policy_commit(struct selinux_load_state *load_state);
+void selinux_policy_cancel(struct selinux_load_state *load_state);
+int security_read_policy(void **data, size_t *len);
+int security_read_state_kernel(void **data, size_t *len);
+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;
+};
+
+#define XPERMS_ALLOWED 1
+#define XPERMS_AUDITALLOW 2
+#define XPERMS_DONTAUDIT 4
+
+#define security_xperm_set(perms, x) ((perms)[(x) >> 5] |= 1 << ((x) & 0x1f))
+#define security_xperm_test(perms, x) (1 & ((perms)[(x) >> 5] >> ((x) & 0x1f)))
+struct extended_perms_data {
+	u32 p[8];
+};
+
+struct extended_perms_decision {
+	u8 used;
+	u8 driver;
+	struct extended_perms_data *allowed;
+	struct extended_perms_data *auditallow;
+	struct extended_perms_data *dontaudit;
+};
+
+struct extended_perms {
+	u16 len;	/* length associated decision chain */
+	struct extended_perms_data drivers; /* flag drivers that are used */
+};
+
+/* definitions of av_decision.flags */
+#define AVD_FLAGS_PERMISSIVE	0x0001
+
+void security_compute_av(u32 ssid, u32 tsid,
+			 u16 tclass, struct av_decision *avd,
+			 struct extended_perms *xperms);
+
+void security_compute_xperms_decision(u32 ssid, u32 tsid, u16 tclass,
+				      u8 driver,
+				      struct extended_perms_decision *xpermd);
+
+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_sid_to_context_inval(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_str_to_sid(const char *scontext, 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_ib_pkey_sid(u64 subnet_prefix, u16 pkey_num, u32 *out_sid);
+
+int security_ib_endport_sid(const char *dev_name, u8 port_num, 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_validate_transition_user(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(struct selinux_policy *policy,
+			 char ***classes, u32 *nclasses);
+int security_get_permissions(struct selinux_policy *policy,
+			     const char *class, char ***perms, u32 *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, const char *path, u16 sclass,
+		       u32 *sid);
+
+int selinux_policy_genfs_sid(struct selinux_policy *policy,
+		       const char *fstype, const char *path, 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 the 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(bool enforcing);
+extern void selinux_status_update_policyload(u32 seqno);
+extern void selinux_complete_init(void);
+extern struct path selinux_null;
+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);
+
+extern void avtab_cache_init(void);
+extern void ebitmap_cache_init(void);
+extern void hashtab_cache_init(void);
+extern int security_sidtab_hash_stats(char *page);
+
+#endif /* _SELINUX_SECURITY_H_ */