diff options
Diffstat (limited to 'libc/sysdeps/linux/common/bits')
| -rw-r--r-- | libc/sysdeps/linux/common/bits/mman-common.h | 109 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/bits/mman.h | 98 |
2 files changed, 110 insertions, 97 deletions
diff --git a/libc/sysdeps/linux/common/bits/mman-common.h b/libc/sysdeps/linux/common/bits/mman-common.h new file mode 100644 index 000000000..f00cb1ab3 --- /dev/null +++ b/libc/sysdeps/linux/common/bits/mman-common.h @@ -0,0 +1,109 @@ +/* Definitions for POSIX memory map interface. Linux/generic version. + Copyright (C) 1997,2000,2003,2005,2006,2009 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SYS_MMAN_H +# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead." +#endif + +/* The following definitions basically come from the kernel headers. + But the kernel header is not namespace clean. */ + + +/* Protections are chosen from these bits, OR'd together. The + implementation does not necessarily support PROT_EXEC or PROT_WRITE + without PROT_READ. The only guarantees are that no writing will be + allowed without PROT_WRITE and no access will be allowed for PROT_NONE. */ + +#define PROT_READ 0x1 /* Page can be read. */ +#define PROT_WRITE 0x2 /* Page can be written. */ +#define PROT_EXEC 0x4 /* Page can be executed. */ +#define PROT_NONE 0x0 /* Page can not be accessed. */ +#define PROT_GROWSDOWN 0x01000000 /* Extend change to start of + growsdown vma (mprotect only). */ +#define PROT_GROWSUP 0x02000000 /* Extend change to start of + growsup vma (mprotect only). */ + +/* Sharing types (must choose one and only one of these). */ +#define MAP_SHARED 0x01 /* Share changes. */ +#define MAP_PRIVATE 0x02 /* Changes are private. */ +#ifdef __USE_MISC +# define MAP_TYPE 0x0f /* Mask for type of mapping. */ +#endif + +/* Other flags. */ +#define MAP_FIXED 0x10 /* Interpret addr exactly. */ +#ifdef __USE_MISC +# define MAP_FILE 0 +# define MAP_ANONYMOUS 0x20 /* Don't use a file. */ +# define MAP_ANON MAP_ANONYMOUS +#endif + +/* These are Linux-specific. */ +#ifdef __USE_MISC +# define MAP_GROWSDOWN 0x00100 /* Stack-like segment. */ +# define MAP_DENYWRITE 0x00800 /* ETXTBSY */ +# define MAP_EXECUTABLE 0x01000 /* Mark it as an executable. */ +# define MAP_LOCKED 0x02000 /* Lock the mapping. */ +# define MAP_NORESERVE 0x04000 /* Don't check for reservations. */ +# define MAP_POPULATE 0x08000 /* Populate (prefault) pagetables. */ +# define MAP_NONBLOCK 0x10000 /* Do not block on IO. */ +# define MAP_STACK 0x20000 /* Allocation is for a stack. */ +# define MAP_UNINITIALIZE 0x4000000 /* For anonymous mmap, memory could + be uninitialized. */ +#endif + +/* Flags to `msync'. */ +#define MS_ASYNC 1 /* Sync memory asynchronously. */ +#define MS_SYNC 4 /* Synchronous memory sync. */ +#define MS_INVALIDATE 2 /* Invalidate the caches. */ + +/* Flags for `mlockall'. */ +#define MCL_CURRENT 1 /* Lock all currently mapped pages. */ +#define MCL_FUTURE 2 /* Lock all additions to address + space. */ + +/* Flags for `mremap'. */ +#ifdef __USE_GNU +# define MREMAP_MAYMOVE 1 +# define MREMAP_FIXED 2 +#endif + +/* Advice to `madvise'. */ +#ifdef __USE_BSD +# define MADV_NORMAL 0 /* No further special treatment. */ +# define MADV_RANDOM 1 /* Expect random page references. */ +# define MADV_SEQUENTIAL 2 /* Expect sequential page references. */ +# define MADV_WILLNEED 3 /* Will need these pages. */ +# define MADV_DONTNEED 4 /* Don't need these pages. */ +# define MADV_REMOVE 9 /* Remove these pages and resources. */ +# define MADV_DONTFORK 10 /* Do not inherit across fork. */ +# define MADV_DOFORK 11 /* Do inherit across fork. */ +# define MADV_MERGEABLE 12 /* KSM may merge identical pages. */ +# define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages. */ +# define MADV_HWPOISON 100 /* Poison a page for testing. */ +#endif + +/* The POSIX people had to invent similar names for the same things. */ +#ifdef __USE_XOPEN2K +# define POSIX_MADV_NORMAL 0 /* No further special treatment. */ +# define POSIX_MADV_RANDOM 1 /* Expect random page references. */ +# define POSIX_MADV_SEQUENTIAL 2 /* Expect sequential page references. */ +# define POSIX_MADV_WILLNEED 3 /* Will need these pages. */ +# define POSIX_MADV_DONTNEED 4 /* Don't need these pages. */ +#endif diff --git a/libc/sysdeps/linux/common/bits/mman.h b/libc/sysdeps/linux/common/bits/mman.h index 0c1590270..11b8e2a8b 100644 --- a/libc/sysdeps/linux/common/bits/mman.h +++ b/libc/sysdeps/linux/common/bits/mman.h @@ -1,97 +1 @@ -/* Definitions for BSD-style memory management. - Copyright (C) 1994-1998,2000,01,02,05 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -/* These are the bits used by 4.4 BSD and its derivatives. On systems - (such as GNU) where these facilities are not system services but can be - emulated in the C library, these are the definitions we emulate. */ - -#ifndef _SYS_MMAN_H -# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead." -#endif - -/* Protections are chosen from these bits, OR'd together. The - implementation does not necessarily support PROT_EXEC or PROT_WRITE - without PROT_READ. The only guarantees are that no writing will be - allowed without PROT_WRITE and no access will be allowed for PROT_NONE. */ - -#define PROT_NONE 0x00 /* No access. */ -#define PROT_READ 0x04 /* Pages can be read. */ -#define PROT_WRITE 0x02 /* Pages can be written. */ -#define PROT_EXEC 0x01 /* Pages can be executed. */ - -/* Flags contain mapping type, sharing type and options. */ - -/* Mapping type (must choose one and only one of these). */ -#ifdef __USE_BSD -# define MAP_FILE 0x0001 /* Mapped from a file or device. */ -# define MAP_ANON 0x0002 /* Allocated from anonymous virtual memory. */ -# define MAP_TYPE 0x000f /* Mask for type field. */ -# ifdef __USE_MISC -# define MAP_ANONYMOUS MAP_ANON /* Linux name. */ -# endif -#endif - -/* Sharing types (must choose one and only one of these). */ -#ifdef __USE_BSD -# define MAP_COPY 0x0020 /* Virtual copy of region at mapping time. */ -#endif -#define MAP_SHARED 0x0010 /* Share changes. */ -#define MAP_PRIVATE 0x0000 /* Changes private; copy pages on write. */ - -/* Other flags. */ -#define MAP_FIXED 0x0100 /* Map address must be exactly as requested. */ -#ifdef __USE_BSD -# define MAP_NOEXTEND 0x0200 /* For MAP_FILE, don't change file size. */ -# define MAP_HASSEMPHORE 0x0400 /* Region may contain semaphores. */ -# define MAP_INHERIT 0x0800 /* Region is retained after exec. */ -#endif - -/* Advice to `madvise'. */ -#ifdef __USE_BSD -# define MADV_NORMAL 0 /* No further special treatment. */ -# define MADV_RANDOM 1 /* Expect random page references. */ -# define MADV_SEQUENTIAL 2 /* Expect sequential page references. */ -# define MADV_WILLNEED 3 /* Will need these pages. */ -# define MADV_DONTNEED 4 /* Don't need these pages. */ -#endif - -/* The POSIX people had to invent similar names for the same things. */ -#ifdef __USE_XOPEN2K -# define POSIX_MADV_NORMAL 0 /* No further special treatment. */ -# define POSIX_MADV_RANDOM 1 /* Expect random page references. */ -# define POSIX_MADV_SEQUENTIAL 2 /* Expect sequential page references. */ -# define POSIX_MADV_WILLNEED 3 /* Will need these pages. */ -# define POSIX_MADV_DONTNEED 4 /* Don't need these pages. */ -#endif - -/* Flags to `msync'. */ -#define MS_ASYNC 1 /* Sync memory asynchronously. */ -#define MS_SYNC 0 /* Synchronous memory sync. */ -#define MS_INVALIDATE 2 /* Invalidate the caches. */ - -/* Flags for `mremap'. */ -#ifdef __USE_GNU -# define MREMAP_MAYMOVE 1 /* Mapping address may change. */ -# define MREMAP_FIXED 2 /* Fifth argument sets new address. */ -#endif - -/* Flags for `mlockall' (can be OR'd together). */ -#define MCL_CURRENT 1 /* Lock all currently mapped pages. */ -#define MCL_FUTURE 2 /* Lock all additions to address - space. */ +#include <bits/mman-common.h> |