/* Copyright (C) 1997, 1998, 1999, 2002 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Daniel Jacobowitz <dan@debian.org>, 1999. 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. */ /* Massivly hacked up for uClibc by Erik Andersen */ #include <features.h> #include <errno.h> #include <unistd.h> #include <sys/mman.h> #if defined __UCLIBC_HAS_LFS__ #if defined _FILE_OFFSET_BITS && _FILE_OFFSET_BITS != 64 #undef _FILE_OFFSET_BITS #define _FILE_OFFSET_BITS 64 #endif #ifndef __USE_LARGEFILE64 # define __USE_LARGEFILE64 1 #endif /* We absolutely do _NOT_ want interfaces silently * * renamed under us or very bad things will happen... */ #ifdef __USE_FILE_OFFSET64 # undef __USE_FILE_OFFSET64 #endif #if ! defined __NR_mmap2 || ! defined _syscall6 /* * This version is a stub that just chops off everything at the mmap 32 bit * mmap() address space... You will probably need to add in an arch specific * implementation to override this as there is not a generic way for me to * implement this particular syscall if your arch lacks _syscall6... * */ __ptr_t mmap64(__ptr_t addr, size_t len, int prot, int flags, int fd, __off64_t offset) { if (offset != (off_t) offset || (offset + len) != (off_t) (offset + len)) { __set_errno (EINVAL); return MAP_FAILED; } return mmap (addr, len, prot, flags, fd, (off_t) offset); } #else #define __NR___syscall_mmap2 __NR_mmap2 static inline _syscall6(__ptr_t, __syscall_mmap2, __ptr_t, addr, size_t, len, int, prot, int, flags, int, fd, off_t, offset); /* This is always 12, even on architectures where PAGE_SHIFT != 12. */ # ifndef MMAP2_PAGE_SHIFT # define MMAP2_PAGE_SHIFT 12 # endif __ptr_t mmap64(__ptr_t addr, size_t len, int prot, int flags, int fd, __off64_t offset) { if (offset & ((1 << MMAP2_PAGE_SHIFT) - 1)) { __set_errno (EINVAL); return MAP_FAILED; } return(__syscall_mmap2(addr, len, prot, flags, fd, (off_t) (offset >> MMAP2_PAGE_SHIFT))); } #endif #endif /* __UCLIBC_HAS_LFS__ */