diff options
Diffstat (limited to 'libc/sysdeps/linux/common/mmap64.c')
-rw-r--r-- | libc/sysdeps/linux/common/mmap64.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/mmap64.c b/libc/sysdeps/linux/common/mmap64.c new file mode 100644 index 000000000..fba0eb6f8 --- /dev/null +++ b/libc/sysdeps/linux/common/mmap64.c @@ -0,0 +1,52 @@ +/* Copyright (C) 1997, 1998, 1999 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. */ + +#include <errno.h> +#include <unistd.h> +#include <sysdep.h> +#include <sys/mman.h> + +#if defined __UCLIBC_HAVE_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 + +#undef creat +__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); +} +#endif /* __UCLIBC_HAVE_LFS__ */ + |