| /* Map addresses from a file or anonymous memory. NaCl version. |
| Copyright (C) 2015-2016 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <sys/mman.h> |
| #include <nacl-interfaces.h> |
| |
| |
| /* 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. */ |
| |
| __ptr_t |
| __mmap (__ptr_t addr, size_t len, int prot, int flags, int fd, off_t offset) |
| { |
| int error = __nacl_irt_memory.mmap (&addr, len, prot, flags, fd, offset); |
| if (error) |
| { |
| errno = error; |
| return MAP_FAILED; |
| } |
| return addr; |
| } |
| weak_alias (__mmap, mmap) |
| |
| |
| /* Since off64_t is the same as off_t, mmap64 is just an alias. */ |
| strong_alias (__mmap, __mmap64) |
| weak_alias (__mmap, mmap64) |