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Diffstat (limited to 'sysroot/usr/include/sys/mman.h')
| -rw-r--r-- | sysroot/usr/include/sys/mman.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/sysroot/usr/include/sys/mman.h b/sysroot/usr/include/sys/mman.h new file mode 100644 index 0000000..4cd8a3f --- /dev/null +++ b/sysroot/usr/include/sys/mman.h @@ -0,0 +1,152 @@ +/* Definitions for BSD-style memory management. + Copyright (C) 1994-2000, 2003, 2004, 2005 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 +#define _SYS_MMAN_H 1 + +#include <features.h> +#include <bits/types.h> +#define __need_size_t +#include <stddef.h> + +#ifndef __off_t_defined +# ifndef __USE_FILE_OFFSET64 +typedef __off_t off_t; +# else +typedef __off64_t off_t; +# endif +# define __off_t_defined +#endif + +#ifndef __mode_t_defined +typedef __mode_t mode_t; +# define __mode_t_defined +#endif + +#include <bits/mman.h> + +/* Return value of `mmap' in case of an error. */ +#define MAP_FAILED ((void *) -1) + +__BEGIN_DECLS +/* Map addresses starting near ADDR and extending for LEN bytes. from + OFFSET into the file FD describes according to PROT and FLAGS. If ADDR + is nonzero, it is the desired mapping address. If the MAP_FIXED bit is + set in FLAGS, the mapping will be at ADDR exactly (which must be + page-aligned); otherwise the system chooses a convenient nearby address. + The return value is the actual mapping address chosen or MAP_FAILED + for errors (in which case `errno' is set). A successful `mmap' call + deallocates any previous mapping for the affected region. */ + +#ifndef __USE_FILE_OFFSET64 +extern void *mmap (void *__addr, size_t __len, int __prot, + int __flags, int __fd, __off_t __offset) __THROW; +#else +# ifdef __REDIRECT_NTH +extern void * __REDIRECT_NTH (mmap, + (void *__addr, size_t __len, int __prot, + int __flags, int __fd, __off64_t __offset), + mmap64); +# else +# define mmap mmap64 +# endif +#endif +#ifdef __USE_LARGEFILE64 +extern void *mmap64 (void *__addr, size_t __len, int __prot, + int __flags, int __fd, __off64_t __offset) __THROW; +#endif + +/* Deallocate any mapping for the region starting at ADDR and extending LEN + bytes. Returns 0 if successful, -1 for errors (and sets errno). */ +extern int munmap (void *__addr, size_t __len) __THROW; + +/* Change the memory protection of the region starting at ADDR and + extending LEN bytes to PROT. Returns 0 if successful, -1 for errors + (and sets errno). */ +extern int mprotect (void *__addr, size_t __len, int __prot) __THROW; + +/* Synchronize the region starting at ADDR and extending LEN bytes with the + file it maps. Filesystem operations on a file being mapped are + unpredictable before this is done. Flags are from the MS_* set. + + This function is a cancellation point and therefore not marked with + __THROW. */ +extern int msync (void *__addr, size_t __len, int __flags); + +#ifdef __USE_BSD +/* Advise the system about particular usage patterns the program follows + for the region starting at ADDR and extending LEN bytes. */ +extern int madvise (void *__addr, size_t __len, int __advice) __THROW; +#endif +#ifdef __USE_XOPEN2K +/* This is the POSIX name for this function. */ +extern int posix_madvise (void *__addr, size_t __len, int __advice) __THROW; +#endif + +/* Guarantee all whole pages mapped by the range [ADDR,ADDR+LEN) to + be memory resident. */ +extern int mlock (__const void *__addr, size_t __len) __THROW; + +/* Unlock whole pages previously mapped by the range [ADDR,ADDR+LEN). */ +extern int munlock (__const void *__addr, size_t __len) __THROW; + +/* Cause all currently mapped pages of the process to be memory resident + until unlocked by a call to the `munlockall', until the process exits, + or until the process calls `execve'. */ +extern int mlockall (int __flags) __THROW; + +/* All currently mapped pages of the process' address space become + unlocked. */ +extern int munlockall (void) __THROW; + +#ifdef __USE_MISC +/* mincore returns the memory residency status of the pages in the + current process's address space specified by [start, start + len). + The status is returned in a vector of bytes. The least significant + bit of each byte is 1 if the referenced page is in memory, otherwise + it is zero. */ +extern int mincore (void *__start, size_t __len, unsigned char *__vec) + __THROW; +#endif + +#ifdef __USE_GNU +/* Remap pages mapped by the range [ADDR,ADDR+OLD_LEN) to new length + NEW_LEN. If MREMAP_MAYMOVE is set in FLAGS the returned address + may differ from ADDR. If MREMAP_FIXED is set in FLAGS the function + takes another paramter which is a fixed address at which the block + resides after a successful call. */ +extern void *mremap (void *__addr, size_t __old_len, size_t __new_len, + int __flags, ...) __THROW; + +/* Remap arbitrary pages of a shared backing store within an existing + VMA. */ +extern int remap_file_pages (void *__start, size_t __size, int __prot, + size_t __pgoff, int __flags) __THROW; +#endif + + +/* Open shared memory segment. */ +extern int shm_open (__const char *__name, int __oflag, mode_t __mode); + +/* Remove shared memory segment. */ +extern int shm_unlink (__const char *__name); + +__END_DECLS + +#endif /* sys/mman.h */ |