/*
- * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2004-2010 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
+/*
+ * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
+ * support for mandatory and extensible security protections. This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ */
#ifndef _SYS_KAUTH_H
#define _SYS_KAUTH_H
#include <sys/appleapiopts.h>
#include <sys/cdefs.h>
+#include <mach/boolean.h>
+#include <sys/_types.h> /* __offsetof() */
+#include <sys/syslimits.h> /* NGROUPS_MAX */
#ifdef __APPLE_API_EVOLVING
#define KAUTH_UID_NONE (~(uid_t)0 - 100) /* not a valid UID */
#define KAUTH_GID_NONE (~(gid_t)0 - 100) /* not a valid GID */
-#ifndef _KAUTH_GUID
-#define _KAUTH_GUID
-/* Apple-style globally unique identifier */
-typedef struct {
-#define KAUTH_GUID_SIZE 16 /* 128-bit identifier */
- unsigned char g_guid[KAUTH_GUID_SIZE];
-} guid_t;
-#define _GUID_T
-#endif /* _KAUTH_GUID */
+#include <sys/_types/_guid_t.h>
/* NT Security Identifier, structure as defined by Microsoft */
#pragma pack(1) /* push packing of 1 byte */
#define KAUTH_NTSID_SIZE(_s) (KAUTH_NTSID_HDRSIZE + ((_s)->sid_authcount * sizeof(u_int32_t)))
/*
- * External lookup message payload
+ * External lookup message payload; this structure is shared between the
+ * kernel group membership resolver, and the user space group membership
+ * resolver daemon, and is use to communicate resolution requests from the
+ * kernel to user space, and the result of that request from user space to
+ * the kernel.
*/
struct kauth_identity_extlookup {
u_int32_t el_seqno; /* request sequence number */
#define KAUTH_EXTLOOKUP_WANT_MEMBERSHIP (1<<12)
#define KAUTH_EXTLOOKUP_VALID_MEMBERSHIP (1<<13)
#define KAUTH_EXTLOOKUP_ISMEMBER (1<<14)
+#define KAUTH_EXTLOOKUP_VALID_PWNAM (1<<15)
+#define KAUTH_EXTLOOKUP_WANT_PWNAM (1<<16)
+#define KAUTH_EXTLOOKUP_VALID_GRNAM (1<<17)
+#define KAUTH_EXTLOOKUP_WANT_GRNAM (1<<18)
+#define KAUTH_EXTLOOKUP_VALID_SUPGRPS (1<<19)
+#define KAUTH_EXTLOOKUP_WANT_SUPGRPS (1<<20)
+
+ __darwin_pid_t el_info_pid; /* request on behalf of PID */
+ u_int64_t el_extend; /* extension field */
+ u_int32_t el_info_reserved_1; /* reserved (APPLE) */
+
uid_t el_uid; /* user ID */
guid_t el_uguid; /* user GUID */
u_int32_t el_uguid_valid; /* TTL on translation result (seconds) */
ntsid_t el_gsid; /* group SID */
u_int32_t el_gsid_valid; /* TTL on translation result (seconds) */
u_int32_t el_member_valid; /* TTL on group lookup result */
+ u_int32_t el_sup_grp_cnt; /* count of supplemental groups up to NGROUPS */
+ gid_t el_sup_groups[NGROUPS_MAX]; /* supplemental group list */
+};
+
+struct kauth_cache_sizes {
+ u_int32_t kcs_group_size;
+ u_int32_t kcs_id_size;
};
#define KAUTH_EXTLOOKUP_REGISTER (0)
#define KAUTH_EXTLOOKUP_RESULT (1<<0)
#define KAUTH_EXTLOOKUP_WORKER (1<<1)
+#define KAUTH_EXTLOOKUP_DEREGISTER (1<<2)
+#define KAUTH_GET_CACHE_SIZES (1<<3)
+#define KAUTH_SET_CACHE_SIZES (1<<4)
+#define KAUTH_CLEAR_CACHES (1<<5)
#ifdef KERNEL
int kc_nwhtgroups; /* whiteout group list */
gid_t *kc_whtgroups;
- struct auditinfo cr_au; /* user auditing data */
+ struct au_session cr_audit; /* user auditing data */
int kc_nsupplement; /* entry count in supplemental data pointer array */
kauth_cred_supplement_t *kc_supplement;
/* Kernel SPI for now */
__BEGIN_DECLS
+/*
+ * Routines specific to credentials with POSIX credential labels attached
+ *
+ * XXX Should be in policy_posix.h, with struct posix_cred
+ */
+extern kauth_cred_t posix_cred_create(posix_cred_t pcred);
+extern posix_cred_t posix_cred_get(kauth_cred_t cred);
+extern void posix_cred_label(kauth_cred_t cred, posix_cred_t pcred);
+extern int posix_cred_access(kauth_cred_t cred, id_t object_uid, id_t object_gid, mode_t object_mode, mode_t mode_req);
+
extern uid_t kauth_getuid(void);
extern uid_t kauth_getruid(void);
extern gid_t kauth_getgid(void);
-extern gid_t kauth_getrgid(void);
extern kauth_cred_t kauth_cred_get(void);
extern kauth_cred_t kauth_cred_get_with_ref(void);
extern kauth_cred_t kauth_cred_proc_ref(proc_t procp);
-extern kauth_cred_t kauth_cred_alloc(void);
extern kauth_cred_t kauth_cred_create(kauth_cred_t cred);
extern void kauth_cred_ref(kauth_cred_t _cred);
-extern void kauth_cred_rele(kauth_cred_t _cred);
-extern kauth_cred_t kauth_cred_dup(kauth_cred_t cred);
-extern kauth_cred_t kauth_cred_copy_real(kauth_cred_t cred);
-extern void kauth_cred_unref(kauth_cred_t _cred);
-extern kauth_cred_t kauth_cred_setuid(kauth_cred_t cred, uid_t uid);
-extern kauth_cred_t kauth_cred_seteuid(kauth_cred_t cred, uid_t euid);
-extern kauth_cred_t kauth_cred_setgid(kauth_cred_t cred, gid_t gid);
-extern kauth_cred_t kauth_cred_setegid(kauth_cred_t cred, gid_t egid);
-extern kauth_cred_t kauth_cred_setuidgid(kauth_cred_t cred, uid_t uid, gid_t gid);
-extern kauth_cred_t kauth_cred_setsvuidgid(kauth_cred_t cred, uid_t uid, gid_t gid);
-extern kauth_cred_t kauth_cred_setgroups(kauth_cred_t cred, gid_t *groups, int groupcount, uid_t gmuid);
+#ifndef __LP64__
+/* Use kauth_cred_unref(), not kauth_cred_rele() */
+extern void kauth_cred_rele(kauth_cred_t _cred) __deprecated;
+#endif
+extern void kauth_cred_unref(kauth_cred_t *_cred);
+
+#if CONFIG_MACF
+struct label;
+extern kauth_cred_t kauth_cred_label_update(kauth_cred_t cred, struct label *label);
+extern int kauth_proc_label_update(struct proc *p, struct label *label);
+#else
+/* this is a temp hack to cover us when MAC is not built in a kernel configuration.
+ * Since we cannot build our export list based on the kernel configuration we need
+ * to define a stub.
+ */
+extern kauth_cred_t kauth_cred_label_update(kauth_cred_t cred, void *label);
+extern int kauth_proc_label_update(struct proc *p, void *label);
+#endif
+
extern kauth_cred_t kauth_cred_find(kauth_cred_t cred);
-extern int kauth_cred_getgroups(gid_t *_groups, int *_groupcount);
-extern int kauth_cred_assume(uid_t _uid);
extern uid_t kauth_cred_getuid(kauth_cred_t _cred);
+extern uid_t kauth_cred_getruid(kauth_cred_t _cred);
+extern uid_t kauth_cred_getsvuid(kauth_cred_t _cred);
extern gid_t kauth_cred_getgid(kauth_cred_t _cred);
+extern gid_t kauth_cred_getrgid(kauth_cred_t _cred);
+extern gid_t kauth_cred_getsvgid(kauth_cred_t _cred);
+extern int kauth_cred_pwnam2guid(char *pwnam, guid_t *guidp);
+extern int kauth_cred_grnam2guid(char *grnam, guid_t *guidp);
+extern int kauth_cred_guid2pwnam(guid_t *guidp, char *pwnam);
+extern int kauth_cred_guid2grnam(guid_t *guidp, char *grnam);
extern int kauth_cred_guid2uid(guid_t *_guid, uid_t *_uidp);
extern int kauth_cred_guid2gid(guid_t *_guid, gid_t *_gidp);
extern int kauth_cred_ntsid2uid(ntsid_t *_sid, uid_t *_uidp);
extern int kauth_cred_ismember_gid(kauth_cred_t _cred, gid_t _gid, int *_resultp);
extern int kauth_cred_ismember_guid(kauth_cred_t _cred, guid_t *_guidp, int *_resultp);
-extern int kauth_cred_supplementary_register(const char *name, int *ident);
-extern int kauth_cred_supplementary_add(kauth_cred_t cred, int ident, const void *data, size_t datasize);
-extern int kauth_cred_supplementary_remove(kauth_cred_t cred, int ident);
+extern int groupmember(gid_t gid, kauth_cred_t cred);
-/* NOT KPI - fast path for in-kernel code only */
+/* currently only exported in unsupported for use by seatbelt */
extern int kauth_cred_issuser(kauth_cred_t _cred);
/* GUID, NTSID helpers */
extern guid_t kauth_null_guid;
extern int kauth_guid_equal(guid_t *_guid1, guid_t *_guid2);
+#ifdef XNU_KERNEL_PRIVATE
extern int kauth_ntsid_equal(ntsid_t *_sid1, ntsid_t *_sid2);
+#endif /* XNU_KERNEL_PRIVATE */
+#ifdef XNU_KERNEL_PRIVATE
extern int kauth_wellknown_guid(guid_t *_guid);
#define KAUTH_WKG_NOT 0 /* not a well-known GUID */
#define KAUTH_WKG_OWNER 1
#define KAUTH_WKG_NOBODY 3
#define KAUTH_WKG_EVERYBODY 4
+extern kauth_cred_t kauth_cred_dup(kauth_cred_t cred);
+extern gid_t kauth_getrgid(void);
+extern kauth_cred_t kauth_cred_alloc(void);
extern int cantrace(proc_t cur_procp, kauth_cred_t creds, proc_t traced_procp, int *errp);
+extern kauth_cred_t kauth_cred_copy_real(kauth_cred_t cred);
+extern kauth_cred_t kauth_cred_setresuid(kauth_cred_t cred, uid_t ruid, uid_t euid, uid_t svuid, uid_t gmuid);
+extern kauth_cred_t kauth_cred_setresgid(kauth_cred_t cred, gid_t rgid, gid_t egid, gid_t svgid);
+extern kauth_cred_t kauth_cred_setuidgid(kauth_cred_t cred, uid_t uid, gid_t gid);
+extern kauth_cred_t kauth_cred_setsvuidgid(kauth_cred_t cred, uid_t uid, gid_t gid);
+extern kauth_cred_t kauth_cred_setgroups(kauth_cred_t cred, gid_t *groups, int groupcount, uid_t gmuid);
+struct uthread;
+extern void kauth_cred_uthread_update(struct uthread *, proc_t);
+#ifdef CONFIG_MACF
+extern int kauth_proc_label_update_execve(struct proc *p, struct vfs_context *ctx, struct vnode *vp, struct vnode *scriptvp, struct label *scriptlabel, struct label *execlabel, void *psattr);
+#endif
+extern int kauth_cred_getgroups(kauth_cred_t _cred, gid_t *_groups, int *_groupcount);
+extern int kauth_cred_assume(uid_t _uid);
+extern int kauth_cred_gid_subset(kauth_cred_t _cred1, kauth_cred_t _cred2, int *_resultp);
+struct auditinfo_addr;
+extern kauth_cred_t kauth_cred_setauditinfo(kauth_cred_t, au_session_t *);
+extern int kauth_cred_supplementary_register(const char *name, int *ident);
+extern int kauth_cred_supplementary_add(kauth_cred_t cred, int ident, const void *data, size_t datasize);
+extern int kauth_cred_supplementary_remove(kauth_cred_t cred, int ident);
+#endif /* XNU_KERNEL_PRIVATE */
__END_DECLS
#endif /* KERNEL */
#define KAUTH_ACE_ONLY_INHERIT (1<<8)
#define KAUTH_ACE_SUCCESS (1<<9) /* not implemented (AUDIT/ALARM) */
#define KAUTH_ACE_FAILURE (1<<10) /* not implemented (AUDIT/ALARM) */
+/* All flag bits controlling ACE inheritance */
+#define KAUTH_ACE_INHERIT_CONTROL_FLAGS \
+ (KAUTH_ACE_FILE_INHERIT | \
+ KAUTH_ACE_DIRECTORY_INHERIT | \
+ KAUTH_ACE_LIMIT_INHERIT | \
+ KAUTH_ACE_ONLY_INHERIT)
kauth_ace_rights_t ace_rights; /* scope specific */
/* These rights are never tested, but may be present in an ACL */
#define KAUTH_ACE_GENERIC_ALL (1<<21)
u_int32_t acl_entrycount;
u_int32_t acl_flags;
- struct kauth_ace acl_ace[];
+ struct kauth_ace acl_ace[1];
};
/*
/* this ACL must not be overwritten as part of an inheritance operation */
#define KAUTH_ACL_NO_INHERIT (1<<17)
-#define KAUTH_ACL_SIZE(c) (sizeof(struct kauth_acl) + (c) * sizeof(struct kauth_ace))
+/* acl_entrycount that tells us the ACL is not valid */
+#define KAUTH_FILESEC_NOACL ((u_int32_t)(-1))
+
+/*
+ * If the acl_entrycount field is KAUTH_FILESEC_NOACL, then the size is the
+ * same as a kauth_acl structure; the intent is to put an actual entrycount of
+ * KAUTH_FILESEC_NOACL on disk to distinguish a kauth_filesec_t with an empty
+ * entry (Windows treats this as "deny all") from one that merely indicates a
+ * file group and/or owner guid values.
+ */
+#define KAUTH_ACL_SIZE(c) (__offsetof(struct kauth_acl, acl_ace) + ((u_int32_t)(c) != KAUTH_FILESEC_NOACL ? ((c) * sizeof(struct kauth_ace)) : 0))
#define KAUTH_ACL_COPYSIZE(p) KAUTH_ACL_SIZE((p)->acl_entrycount)
guid_t fsec_group;
struct kauth_acl fsec_acl;
- /* acl_entrycount that tells us the ACL is not valid */
-#define KAUTH_FILESEC_NOACL ((u_int32_t)(-1))
};
/* backwards compatibility */
typedef struct kauth_filesec *kauth_filesec_t;
#endif
-#define KAUTH_FILESEC_SIZE(c) (sizeof(struct kauth_filesec) + (c) * sizeof(struct kauth_ace))
+#define KAUTH_FILESEC_SIZE(c) (__offsetof(struct kauth_filesec, fsec_acl) + __offsetof(struct kauth_acl, acl_ace) + (c) * sizeof(struct kauth_ace))
#define KAUTH_FILESEC_COPYSIZE(p) KAUTH_FILESEC_SIZE(((p)->fsec_entrycount == KAUTH_FILESEC_NOACL) ? 0 : (p)->fsec_entrycount)
-#define KAUTH_FILESEC_COUNT(s) ((s - sizeof(struct kauth_filesec)) / sizeof(struct kauth_ace))
+#define KAUTH_FILESEC_COUNT(s) (((s) - KAUTH_FILESEC_SIZE(0)) / sizeof(struct kauth_ace))
+#define KAUTH_FILESEC_VALID(s) ((s) >= KAUTH_FILESEC_SIZE(0) && (((s) - KAUTH_FILESEC_SIZE(0)) % sizeof(struct kauth_ace)) == 0)
#define KAUTH_FILESEC_XATTR "com.apple.system.Security"
-__BEGIN_DECLS
-kauth_filesec_t kauth_filesec_alloc(int size);
-void kauth_filesec_free(kauth_filesec_t fsp);
-int kauth_copyinfilesec(user_addr_t xsecurity, kauth_filesec_t *xsecdestpp);
-__END_DECLS
+/* Allowable first arguments to kauth_filesec_acl_setendian() */
+#define KAUTH_ENDIAN_HOST 0x00000001 /* set host endianness */
+#define KAUTH_ENDIAN_DISK 0x00000002 /* set disk endianness */
#endif /* KERNEL || <sys/acl.h> */
#ifdef KERNEL
+
+
/*
* Scope management.
*/
kauth_ace_rights_t ae_requested;
kauth_ace_rights_t ae_residual;
int ae_result;
+ boolean_t ae_found_deny;
int ae_options;
#define KAUTH_AEVAL_IS_OWNER (1<<0) /* authorizing operation for owner */
#define KAUTH_AEVAL_IN_GROUP (1<<1) /* authorizing operation for groupmember */
+#define KAUTH_AEVAL_IN_GROUP_UNKNOWN (1<<2) /* authorizing operation for unknown group membership */
/* expansions for 'generic' rights bits */
kauth_ace_rights_t ae_exp_gall;
kauth_ace_rights_t ae_exp_gread;
typedef struct kauth_acl_eval *kauth_acl_eval_t;
__BEGIN_DECLS
+kauth_filesec_t kauth_filesec_alloc(int size);
+void kauth_filesec_free(kauth_filesec_t fsp);
extern kauth_scope_t kauth_register_scope(const char *_identifier, kauth_scope_callback_t _callback, void *_idata);
extern void kauth_deregister_scope(kauth_scope_t _scope);
extern kauth_listener_t kauth_listen_scope(const char *_identifier, kauth_scope_callback_t _callback, void *_idata);
extern void kauth_unlisten_scope(kauth_listener_t _scope);
extern int kauth_authorize_action(kauth_scope_t _scope, kauth_cred_t _credential, kauth_action_t _action,
uintptr_t _arg0, uintptr_t _arg1, uintptr_t _arg2, uintptr_t _arg3);
-extern int kauth_acl_evaluate(kauth_cred_t _credential, kauth_acl_eval_t _eval);
-extern int kauth_acl_inherit(vnode_t _dvp, kauth_acl_t _initial, kauth_acl_t *_product, int _isdir, vfs_context_t _ctx);
/* default scope handlers */
extern int kauth_authorize_allow(kauth_cred_t _credential, void *_idata, kauth_action_t _action,
uintptr_t _arg0, uintptr_t _arg1, uintptr_t _arg2, uintptr_t _arg3);
+
+
+#ifdef XNU_KERNEL_PRIVATE
+void kauth_filesec_acl_setendian(int, kauth_filesec_t, kauth_acl_t);
+int kauth_copyinfilesec(user_addr_t xsecurity, kauth_filesec_t *xsecdestpp);
+extern int kauth_acl_evaluate(kauth_cred_t _credential, kauth_acl_eval_t _eval);
+extern int kauth_acl_inherit(vnode_t _dvp, kauth_acl_t _initial, kauth_acl_t *_product, int _isdir, vfs_context_t _ctx);
+
+#endif /* XNU_KERNEL_PRIVATE */
+
+
__END_DECLS
/*
/* Actions */
#define KAUTH_GENERIC_ISSUSER 1
+#ifdef XNU_KERNEL_PRIVATE
__BEGIN_DECLS
extern int kauth_authorize_generic(kauth_cred_t credential, kauth_action_t action);
__END_DECLS
+#endif /* XNU_KERNEL_PRIVATE */
/*
* Process/task scope.
#define KAUTH_FILEOP_OPEN 1
#define KAUTH_FILEOP_CLOSE 2
#define KAUTH_FILEOP_RENAME 3
-#define KAUTH_FILEOP_EXCHANGE 4
+#define KAUTH_FILEOP_EXCHANGE 4
#define KAUTH_FILEOP_LINK 5
#define KAUTH_FILEOP_EXEC 6
+#define KAUTH_FILEOP_DELETE 7
/*
* arguments passed to KAUTH_FILEOP_OPEN listeners
* arguments passed to KAUTH_FILEOP_EXEC listeners
* arg0 is pointer to vnode (vnode *) for executable.
* arg1 is pointer to path (char *) to executable.
+ * arguments passed to KAUTH_FILEOP_DELETE listeners
+ * arg0 is pointer to vnode (vnode *) of file/dir that was deleted.
+ * arg1 is pointer to path (char *) of file/dir that was deleted.
*/
/* Flag values returned to close listeners. */
#define KAUTH_FILEOP_CLOSE_MODIFIED (1<<1)
__BEGIN_DECLS
+#ifdef XNU_KERNEL_PRIVATE
extern int kauth_authorize_fileop_has_listeners(void);
+#endif /* XNU_KERNEL_PRIVATE */
extern int kauth_authorize_fileop(kauth_cred_t _credential, kauth_action_t _action,
uintptr_t _arg0, uintptr_t _arg1);
__END_DECLS
*/
#define KAUTH_VNODE_NOIMMUTABLE (1<<30)
+
+/*
+ * fake right that is composed by the following...
+ * vnode must have search for owner, group and world allowed
+ * plus there must be no deny modes present for SEARCH... this fake
+ * right is used by the fast lookup path to avoid checking
+ * for an exact match on the last credential to lookup
+ * the component being acted on
+ */
+#define KAUTH_VNODE_SEARCHBYANYONE (1<<29)
+
+
+/*
+ * when passed as an 'action' to "vnode_uncache_authorized_actions"
+ * it indicates that all of the cached authorizations for that
+ * vnode should be invalidated
+ */
+#define KAUTH_INVALIDATE_CACHED_RIGHTS ((kauth_action_t)~0)
+
+
+
/* The expansions of the GENERIC bits at evaluation time */
#define KAUTH_VNODE_GENERIC_READ_BITS (KAUTH_VNODE_READ_DATA | \
KAUTH_VNODE_READ_ATTRIBUTES | \
# ifndef _FN_KPRINTF
# define _FN_KPRINTF
void kprintf(const char *fmt, ...);
-# endif
+# endif /* !_FN_KPRINTF */
# define KAUTH_DEBUG_ENABLE
# define K_UUID_FMT "%08x:%08x:%08x:%08x"
# define K_UUID_ARG(_u) *(int *)&_u.g_guid[0],*(int *)&_u.g_guid[4],*(int *)&_u.g_guid[8],*(int *)&_u.g_guid[12]
__PRETTY_FUNCTION__, __LINE__ , \
##args); \
} while(0)
-#else
+#else /* !0 */
# define KAUTH_DEBUG(fmt, args...) do { } while (0)
# define VFS_DEBUG(ctx, vp, fmt, args...) do { } while(0)
-#endif
+#endif /* !0 */
/*
* Initialisation.
*/
extern lck_grp_t *kauth_lck_grp;
+#ifdef XNU_KERNEL_PRIVATE
__BEGIN_DECLS
extern void kauth_init(void);
+extern void kauth_cred_init(void);
+#if CONFIG_EXT_RESOLVER
extern void kauth_identity_init(void);
extern void kauth_groups_init(void);
-extern void kauth_cred_init(void);
extern void kauth_resolver_init(void);
-__END_DECLS
#endif
+__END_DECLS
+#endif /* XNU_KERNEL_PRIVATE */
+
+#endif /* KERNEL */
#endif /* __APPLE_API_EVOLVING */
#endif /* _SYS_KAUTH_H */
-
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