X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/fe8ab488e9161c46dd9885d58fc52996dc0249ff..4ba76501152d51ccb5647018f3192c6096367d48:/bsd/sys/mman.h diff --git a/bsd/sys/mman.h b/bsd/sys/mman.h index acdbeb59f..abe0b93c0 100644 --- a/bsd/sys/mman.h +++ b/bsd/sys/mman.h @@ -1,8 +1,8 @@ /* - * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2019 Apple Computer, 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 @@ -11,10 +11,10 @@ * 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, @@ -22,7 +22,7 @@ * 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@ */ /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ @@ -73,7 +73,7 @@ * [TYM] posix_typed_mem_open() */ -#ifndef _SYS_MMAN_H_ +#ifndef _SYS_MMAN_H_ #define _SYS_MMAN_H_ #include @@ -92,128 +92,157 @@ /* * Protections are chosen from these bits, or-ed together */ -#define PROT_NONE 0x00 /* [MC2] no permissions */ -#define PROT_READ 0x01 /* [MC2] pages can be read */ -#define PROT_WRITE 0x02 /* [MC2] pages can be written */ -#define PROT_EXEC 0x04 /* [MC2] pages can be executed */ +#define PROT_NONE 0x00 /* [MC2] no permissions */ +#define PROT_READ 0x01 /* [MC2] pages can be read */ +#define PROT_WRITE 0x02 /* [MC2] pages can be written */ +#define PROT_EXEC 0x04 /* [MC2] pages can be executed */ /* * Flags contain sharing type and options. * Sharing types; choose one. */ -#define MAP_SHARED 0x0001 /* [MF|SHM] share changes */ -#define MAP_PRIVATE 0x0002 /* [MF|SHM] changes are private */ +#define MAP_SHARED 0x0001 /* [MF|SHM] share changes */ +#define MAP_PRIVATE 0x0002 /* [MF|SHM] changes are private */ #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) -#define MAP_COPY MAP_PRIVATE /* Obsolete */ -#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ +#define MAP_COPY MAP_PRIVATE /* Obsolete */ +#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ /* * Other flags */ -#define MAP_FIXED 0x0010 /* [MF|SHM] interpret addr exactly */ +#define MAP_FIXED 0x0010 /* [MF|SHM] interpret addr exactly */ #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) -#define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ -#define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ -#define MAP_RESERVED0080 0x0080 /* previously unimplemented MAP_INHERIT */ -#define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */ -#define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ -#define MAP_NOCACHE 0x0400 /* don't cache pages for this mapping */ -#define MAP_JIT 0x0800 /* Allocate a region that will be used for JIT purposes */ -#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ +#define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ +#define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ +#define MAP_RESERVED0080 0x0080 /* previously unimplemented MAP_INHERIT */ +#define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */ +#define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ +#define MAP_NOCACHE 0x0400 /* don't cache pages for this mapping */ +#define MAP_JIT 0x0800 /* Allocate a region that will be used for JIT purposes */ + +/* + * Mapping type + */ +#define MAP_FILE 0x0000 /* map from file (default) */ +#define MAP_ANON 0x1000 /* allocated from memory, swap space */ +#define MAP_ANONYMOUS MAP_ANON + +/* + * The MAP_RESILIENT_* flags can be used when the caller wants to map some + * possibly unreliable memory and be able to access it safely, possibly + * getting the wrong contents rather than raising any exception. + * For safety reasons, such mappings have to be read-only (PROT_READ access + * only). + * + * MAP_RESILIENT_CODESIGN: + * accessing this mapping will not generate code-signing violations, + * even if the contents are tainted. + * MAP_RESILIENT_MEDIA: + * accessing this mapping will not generate an exception if the contents + * are not available (unreachable removable or remote media, access beyond + * end-of-file, ...). Missing contents will be replaced with zeroes. + */ +#define MAP_RESILIENT_CODESIGN 0x2000 /* no code-signing failures */ +#define MAP_RESILIENT_MEDIA 0x4000 /* no backing-store failures */ + +#if !defined(CONFIG_EMBEDDED) +#define MAP_32BIT 0x8000 /* Return virtual addresses <4G only: Requires entitlement */ +#endif /* !defined(CONFIG_EMBEDDED) */ + +#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ /* * Process memory locking */ -#define MCL_CURRENT 0x0001 /* [ML] Lock only current memory */ -#define MCL_FUTURE 0x0002 /* [ML] Lock all future memory as well */ +#define MCL_CURRENT 0x0001 /* [ML] Lock only current memory */ +#define MCL_FUTURE 0x0002 /* [ML] Lock all future memory as well */ /* * Error return from mmap() */ -#define MAP_FAILED ((void *)-1) /* [MF|SHM] mmap failed */ +#define MAP_FAILED ((void *)-1) /* [MF|SHM] mmap failed */ /* * msync() flags */ -#define MS_ASYNC 0x0001 /* [MF|SIO] return immediately */ -#define MS_INVALIDATE 0x0002 /* [MF|SIO] invalidate all cached data */ -#define MS_SYNC 0x0010 /* [MF|SIO] msync synchronously */ +#define MS_ASYNC 0x0001 /* [MF|SIO] return immediately */ +#define MS_INVALIDATE 0x0002 /* [MF|SIO] invalidate all cached data */ +#define MS_SYNC 0x0010 /* [MF|SIO] msync synchronously */ #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) #define MS_KILLPAGES 0x0004 /* invalidate pages, leave mapped */ #define MS_DEACTIVATE 0x0008 /* deactivate pages, leave mapped */ -/* - * Mapping type - */ -#define MAP_FILE 0x0000 /* map from file (default) */ -#define MAP_ANON 0x1000 /* allocated from memory, swap space */ -#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ +#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ /* * Advice to madvise */ -#define POSIX_MADV_NORMAL 0 /* [MC1] no further special treatment */ -#define POSIX_MADV_RANDOM 1 /* [MC1] expect random page refs */ -#define POSIX_MADV_SEQUENTIAL 2 /* [MC1] expect sequential page refs */ -#define POSIX_MADV_WILLNEED 3 /* [MC1] will need these pages */ -#define POSIX_MADV_DONTNEED 4 /* [MC1] dont need these pages */ +#define POSIX_MADV_NORMAL 0 /* [MC1] no further special treatment */ +#define POSIX_MADV_RANDOM 1 /* [MC1] expect random page refs */ +#define POSIX_MADV_SEQUENTIAL 2 /* [MC1] expect sequential page refs */ +#define POSIX_MADV_WILLNEED 3 /* [MC1] will need these pages */ +#define POSIX_MADV_DONTNEED 4 /* [MC1] dont need these pages */ #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) -#define MADV_NORMAL POSIX_MADV_NORMAL -#define MADV_RANDOM POSIX_MADV_RANDOM -#define MADV_SEQUENTIAL POSIX_MADV_SEQUENTIAL -#define MADV_WILLNEED POSIX_MADV_WILLNEED -#define MADV_DONTNEED POSIX_MADV_DONTNEED -#define MADV_FREE 5 /* pages unneeded, discard contents */ -#define MADV_ZERO_WIRED_PAGES 6 /* zero the wired pages that have not been unwired before the entry is deleted */ -#define MADV_FREE_REUSABLE 7 /* pages can be reused (by anyone) */ -#define MADV_FREE_REUSE 8 /* caller wants to reuse those pages */ -#define MADV_CAN_REUSE 9 +#define MADV_NORMAL POSIX_MADV_NORMAL +#define MADV_RANDOM POSIX_MADV_RANDOM +#define MADV_SEQUENTIAL POSIX_MADV_SEQUENTIAL +#define MADV_WILLNEED POSIX_MADV_WILLNEED +#define MADV_DONTNEED POSIX_MADV_DONTNEED +#define MADV_FREE 5 /* pages unneeded, discard contents */ +#define MADV_ZERO_WIRED_PAGES 6 /* zero the wired pages that have not been unwired before the entry is deleted */ +#define MADV_FREE_REUSABLE 7 /* pages can be reused (by anyone) */ +#define MADV_FREE_REUSE 8 /* caller wants to reuse those pages */ +#define MADV_CAN_REUSE 9 +#define MADV_PAGEOUT 10 /* page out now (internal only) */ /* * Return bits from mincore */ -#define MINCORE_INCORE 0x1 /* Page is incore */ -#define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ -#define MINCORE_MODIFIED 0x4 /* Page has been modified by us */ -#define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ -#define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ -#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ +#define MINCORE_INCORE 0x1 /* Page is incore */ +#define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ +#define MINCORE_MODIFIED 0x4 /* Page has been modified by us */ +#define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ +#define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ +#define MINCORE_PAGED_OUT 0x20 /* Page has been paged out */ +#define MINCORE_COPIED 0x40 /* Page has been copied */ +#define MINCORE_ANONYMOUS 0x80 /* Page belongs to an anonymous object */ +#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ #ifndef KERNEL __BEGIN_DECLS /* [ML] */ -int mlockall(int); -int munlockall(void); +int mlockall(int); +int munlockall(void); /* [MR] */ -int mlock(const void *, size_t); +int mlock(const void *, size_t); #ifndef _MMAP -#define _MMAP +#define _MMAP /* [MC3]*/ -void * mmap(void *, size_t, int, int, int, off_t) __DARWIN_ALIAS(mmap); +void * mmap(void *, size_t, int, int, int, off_t) __DARWIN_ALIAS(mmap); #endif /* [MPR] */ -int mprotect(void *, size_t, int) __DARWIN_ALIAS(mprotect); +int mprotect(void *, size_t, int) __DARWIN_ALIAS(mprotect); /* [MF|SIO] */ -int msync(void *, size_t, int) __DARWIN_ALIAS_C(msync); +int msync(void *, size_t, int) __DARWIN_ALIAS_C(msync); /* [MR] */ -int munlock(const void *, size_t); +int munlock(const void *, size_t); /* [MC3]*/ -int munmap(void *, size_t) __DARWIN_ALIAS(munmap); +int munmap(void *, size_t) __DARWIN_ALIAS(munmap); /* [SHM] */ -int shm_open(const char *, int, ...); -int shm_unlink(const char *); +int shm_open(const char *, int, ...); +int shm_unlink(const char *); /* [ADV] */ -int posix_madvise(void *, size_t, int); +int posix_madvise(void *, size_t, int); #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) -int madvise(void *, size_t, int); -int mincore(const void *, size_t, char *); -int minherit(void *, size_t, int); +int madvise(void *, size_t, int); +int mincore(const void *, size_t, char *); +int minherit(void *, size_t, int); #endif #ifdef PRIVATE @@ -222,9 +251,9 @@ int mremap_encrypted(void *, size_t, __uint32_t, __uint32_t, __uint32_t); __END_DECLS -#else /* KERNEL */ +#else /* KERNEL */ #ifdef XNU_KERNEL_PRIVATE -void pshm_cache_init(void); /* for bsd_init() */ +void pshm_cache_init(void); /* for bsd_init() */ void pshm_lock_init(void); /* @@ -234,7 +263,7 @@ void pshm_lock_init(void); struct mmap_args; struct fileproc; int pshm_mmap(struct proc *p, struct mmap_args *uap, user_addr_t *retval, - struct fileproc *fp, off_t pageoff); + struct fileproc *fp, off_t pageoff); /* Really need to overhaul struct fileops to avoid this... */ struct pshmnode; struct stat;