Jakub Konka 5b813f1a2a Set macOS/iPhoneOS/tvOS/watchOS ABI to none (unspecified) by default
Prior to this change we would assume the ABI for Apple targets to
be GNU which could result in subtle errors in LLVM emitting calls
to non-existent system libc provided functions such as `_sincosf`
which is a GNU extension and as such is not provided by macOS for example.
This would result in linker errors where the linker would not be
able to find the said symbol in `libSystem.tbd`.

With this change, we now correctly identify macOS (and other Apple
platforms) as having ABI `unknown` which translates to unspecified
in LLVM under-the-hood:

```
// main.ll
target triple = "aarch64-unknown-macos-unknown"
```

Note however that we never suffix the target OS with target version
such as `macos11` or `macos12` which means we fail to instruct LLVM
of potential optimisations provided by the OS such as the availability
of function `___sincosf_stret`. I suggest we investigate that in a
follow-up commit.
2022-05-22 17:45:02 +02:00

407 lines
16 KiB
C
Vendored

/*
* Copyright (c) 2004-2010 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @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
/*
* Identities.
*/
#define KAUTH_UID_NONE (~(uid_t)0 - 100) /* not a valid UID */
#define KAUTH_GID_NONE (~(gid_t)0 - 100) /* not a valid GID */
#include <sys/_types/_guid_t.h>
/* NT Security Identifier, structure as defined by Microsoft */
#pragma pack(1) /* push packing of 1 byte */
typedef struct {
u_int8_t sid_kind;
u_int8_t sid_authcount;
u_int8_t sid_authority[6];
#define KAUTH_NTSID_MAX_AUTHORITIES 16
u_int32_t sid_authorities[KAUTH_NTSID_MAX_AUTHORITIES];
} ntsid_t;
#pragma pack() /* pop packing to previous packing level */
#define _NTSID_T
/* valid byte count inside a SID structure */
#define KAUTH_NTSID_HDRSIZE (8)
#define KAUTH_NTSID_SIZE(_s) (KAUTH_NTSID_HDRSIZE + ((_s)->sid_authcount * sizeof(u_int32_t)))
/*
* 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 */
u_int32_t el_result; /* lookup result */
#define KAUTH_EXTLOOKUP_SUCCESS 0 /* results here are good */
#define KAUTH_EXTLOOKUP_BADRQ 1 /* request badly formatted */
#define KAUTH_EXTLOOKUP_FAILURE 2 /* transient failure during lookup */
#define KAUTH_EXTLOOKUP_FATAL 3 /* permanent failure during lookup */
#define KAUTH_EXTLOOKUP_INPROG 100 /* request in progress */
u_int32_t el_flags;
#define KAUTH_EXTLOOKUP_VALID_UID (1<<0)
#define KAUTH_EXTLOOKUP_VALID_UGUID (1<<1)
#define KAUTH_EXTLOOKUP_VALID_USID (1<<2)
#define KAUTH_EXTLOOKUP_VALID_GID (1<<3)
#define KAUTH_EXTLOOKUP_VALID_GGUID (1<<4)
#define KAUTH_EXTLOOKUP_VALID_GSID (1<<5)
#define KAUTH_EXTLOOKUP_WANT_UID (1<<6)
#define KAUTH_EXTLOOKUP_WANT_UGUID (1<<7)
#define KAUTH_EXTLOOKUP_WANT_USID (1<<8)
#define KAUTH_EXTLOOKUP_WANT_GID (1<<9)
#define KAUTH_EXTLOOKUP_WANT_GGUID (1<<10)
#define KAUTH_EXTLOOKUP_WANT_GSID (1<<11)
#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_usid; /* user NT SID */
u_int32_t el_usid_valid; /* TTL on translation result (seconds) */
gid_t el_gid; /* group ID */
guid_t el_gguid; /* group GUID */
u_int32_t el_gguid_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)
#define IDENTITYSVC_ENTITLEMENT "com.apple.private.identitysvc"
/*
* Generic Access Control Lists.
*/
#if defined(KERNEL) || defined (_SYS_ACL_H)
typedef u_int32_t kauth_ace_rights_t;
/* Access Control List Entry (ACE) */
struct kauth_ace {
guid_t ace_applicable;
u_int32_t ace_flags;
#define KAUTH_ACE_KINDMASK 0xf
#define KAUTH_ACE_PERMIT 1
#define KAUTH_ACE_DENY 2
#define KAUTH_ACE_AUDIT 3 /* not implemented */
#define KAUTH_ACE_ALARM 4 /* not implemented */
#define KAUTH_ACE_INHERITED (1<<4)
#define KAUTH_ACE_FILE_INHERIT (1<<5)
#define KAUTH_ACE_DIRECTORY_INHERIT (1<<6)
#define KAUTH_ACE_LIMIT_INHERIT (1<<7)
#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)
#define KAUTH_ACE_GENERIC_EXECUTE (1<<22)
#define KAUTH_ACE_GENERIC_WRITE (1<<23)
#define KAUTH_ACE_GENERIC_READ (1<<24)
};
#ifndef _KAUTH_ACE
#define _KAUTH_ACE
typedef struct kauth_ace *kauth_ace_t;
#endif
/* Access Control List */
struct kauth_acl {
u_int32_t acl_entrycount;
u_int32_t acl_flags;
struct kauth_ace acl_ace[1];
};
/*
* XXX this value needs to be raised - 3893388
*/
#define KAUTH_ACL_MAX_ENTRIES 128
/*
* The low 16 bits of the flags field are reserved for filesystem
* internal use and must be preserved by all APIs. This includes
* round-tripping flags through user-space interfaces.
*/
#define KAUTH_ACL_FLAGS_PRIVATE (0xffff)
/*
* The high 16 bits of the flags are used to store attributes and
* to request specific handling of the ACL.
*/
/* inheritance will be deferred until the first rename operation */
#define KAUTH_ACL_DEFER_INHERIT (1<<16)
/* this ACL must not be overwritten as part of an inheritance operation */
#define KAUTH_ACL_NO_INHERIT (1<<17)
/* 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)
#ifndef _KAUTH_ACL
#define _KAUTH_ACL
typedef struct kauth_acl *kauth_acl_t;
#endif
/*
* Extended File Security.
*/
/* File Security information */
struct kauth_filesec {
u_int32_t fsec_magic;
#define KAUTH_FILESEC_MAGIC 0x012cc16d
guid_t fsec_owner;
guid_t fsec_group;
struct kauth_acl fsec_acl;
};
/* backwards compatibility */
#define fsec_entrycount fsec_acl.acl_entrycount
#define fsec_flags fsec_acl.acl_flags
#define fsec_ace fsec_acl.acl_ace
#define KAUTH_FILESEC_FLAGS_PRIVATE KAUTH_ACL_FLAGS_PRIVATE
#define KAUTH_FILESEC_DEFER_INHERIT KAUTH_ACL_DEFER_INHERIT
#define KAUTH_FILESEC_NO_INHERIT KAUTH_ACL_NO_INHERIT
#define KAUTH_FILESEC_NONE ((kauth_filesec_t)0)
#define KAUTH_FILESEC_WANTED ((kauth_filesec_t)1)
#ifndef _KAUTH_FILESEC
#define _KAUTH_FILESEC
typedef struct kauth_filesec *kauth_filesec_t;
#endif
#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) - 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"
/* 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> */
/* Actions, also rights bits in an ACE */
#if defined(KERNEL) || defined (_SYS_ACL_H)
#define KAUTH_VNODE_READ_DATA (1U<<1)
#define KAUTH_VNODE_LIST_DIRECTORY KAUTH_VNODE_READ_DATA
#define KAUTH_VNODE_WRITE_DATA (1U<<2)
#define KAUTH_VNODE_ADD_FILE KAUTH_VNODE_WRITE_DATA
#define KAUTH_VNODE_EXECUTE (1U<<3)
#define KAUTH_VNODE_SEARCH KAUTH_VNODE_EXECUTE
#define KAUTH_VNODE_DELETE (1U<<4)
#define KAUTH_VNODE_APPEND_DATA (1U<<5)
#define KAUTH_VNODE_ADD_SUBDIRECTORY KAUTH_VNODE_APPEND_DATA
#define KAUTH_VNODE_DELETE_CHILD (1U<<6)
#define KAUTH_VNODE_READ_ATTRIBUTES (1U<<7)
#define KAUTH_VNODE_WRITE_ATTRIBUTES (1U<<8)
#define KAUTH_VNODE_READ_EXTATTRIBUTES (1U<<9)
#define KAUTH_VNODE_WRITE_EXTATTRIBUTES (1U<<10)
#define KAUTH_VNODE_READ_SECURITY (1U<<11)
#define KAUTH_VNODE_WRITE_SECURITY (1U<<12)
#define KAUTH_VNODE_TAKE_OWNERSHIP (1U<<13)
/* backwards compatibility only */
#define KAUTH_VNODE_CHANGE_OWNER KAUTH_VNODE_TAKE_OWNERSHIP
/* For Windows interoperability only */
#define KAUTH_VNODE_SYNCHRONIZE (1U<<20)
/* (1<<21) - (1<<24) are reserved for generic rights bits */
/* Actions not expressed as rights bits */
/*
* Authorizes the vnode as the target of a hard link.
*/
#define KAUTH_VNODE_LINKTARGET (1U<<25)
/*
* Indicates that other steps have been taken to authorise the action,
* but authorisation should be denied for immutable objects.
*/
#define KAUTH_VNODE_CHECKIMMUTABLE (1U<<26)
/* Action modifiers */
/*
* The KAUTH_VNODE_ACCESS bit is passed to the callback if the authorisation
* request in progress is advisory, rather than authoritative. Listeners
* performing consequential work (i.e. not strictly checking authorisation)
* may test this flag to avoid performing unnecessary work.
*
* This bit will never be present in an ACE.
*/
#define KAUTH_VNODE_ACCESS (1U<<31)
/*
* The KAUTH_VNODE_NOIMMUTABLE bit is passed to the callback along with the
* KAUTH_VNODE_WRITE_SECURITY bit (and no others) to indicate that the
* caller wishes to change one or more of the immutable flags, and the
* state of these flags should not be considered when authorizing the request.
* The system immutable flags are only ignored when the system securelevel
* is low enough to allow their removal.
*/
#define KAUTH_VNODE_NOIMMUTABLE (1U<<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 (1U<<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 | \
KAUTH_VNODE_READ_EXTATTRIBUTES | \
KAUTH_VNODE_READ_SECURITY)
#define KAUTH_VNODE_GENERIC_WRITE_BITS (KAUTH_VNODE_WRITE_DATA | \
KAUTH_VNODE_APPEND_DATA | \
KAUTH_VNODE_DELETE | \
KAUTH_VNODE_DELETE_CHILD | \
KAUTH_VNODE_WRITE_ATTRIBUTES | \
KAUTH_VNODE_WRITE_EXTATTRIBUTES | \
KAUTH_VNODE_WRITE_SECURITY)
#define KAUTH_VNODE_GENERIC_EXECUTE_BITS (KAUTH_VNODE_EXECUTE)
#define KAUTH_VNODE_GENERIC_ALL_BITS (KAUTH_VNODE_GENERIC_READ_BITS | \
KAUTH_VNODE_GENERIC_WRITE_BITS | \
KAUTH_VNODE_GENERIC_EXECUTE_BITS)
/*
* Some sets of bits, defined here for convenience.
*/
#define KAUTH_VNODE_WRITE_RIGHTS (KAUTH_VNODE_ADD_FILE | \
KAUTH_VNODE_ADD_SUBDIRECTORY | \
KAUTH_VNODE_DELETE_CHILD | \
KAUTH_VNODE_WRITE_DATA | \
KAUTH_VNODE_APPEND_DATA | \
KAUTH_VNODE_DELETE | \
KAUTH_VNODE_WRITE_ATTRIBUTES | \
KAUTH_VNODE_WRITE_EXTATTRIBUTES | \
KAUTH_VNODE_WRITE_SECURITY | \
KAUTH_VNODE_TAKE_OWNERSHIP | \
KAUTH_VNODE_LINKTARGET | \
KAUTH_VNODE_CHECKIMMUTABLE)
#endif /* KERNEL || <sys/acl.h> */
#endif /* __APPLE_API_EVOLVING */
#endif /* _SYS_KAUTH_H */