| /* mmap - map files or devices into memory. Linux version. |
| Copyright (C) 2017-2018 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 <unistd.h> |
| #include <sys/mman.h> |
| #include <sysdep.h> |
| #include <stdint.h> |
| |
| #ifndef __OFF_T_MATCHES_OFF64_T |
| # include <mmap_internal.h> |
| |
| /* An architecture may override this. */ |
| # ifndef MMAP_ADJUST_OFFSET |
| # define MMAP_ADJUST_OFFSET(offset) offset |
| # endif |
| |
| void * |
| __mmap (void *addr, size_t len, int prot, int flags, int fd, off_t offset) |
| { |
| MMAP_CHECK_PAGE_UNIT (); |
| |
| if (offset & MMAP_OFF_LOW_MASK) |
| return (void *) INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); |
| |
| #ifdef __NR_mmap2 |
| return (void *) MMAP_CALL (mmap2, addr, len, prot, flags, fd, |
| offset / (uint32_t) MMAP2_PAGE_UNIT); |
| #else |
| return (void *) MMAP_CALL (mmap, addr, len, prot, flags, fd, |
| MMAP_ADJUST_OFFSET (offset)); |
| #endif |
| } |
| weak_alias (__mmap, mmap) |
| libc_hidden_def (__mmap) |
| |
| #endif /* __OFF_T_MATCHES_OFF64_T */ |
