1 /* mmap with error checking.
2 Copyright (C) 2016-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <support/check.h>
20 #include <support/xunistd.h>
21 #include <sys/mman.h>
22
23 void *
xmmap(void * addr,size_t length,int prot,int flags,int fd)24 xmmap (void *addr, size_t length, int prot, int flags, int fd)
25 {
26 void *result = mmap (addr, length, prot, flags, fd, 0);
27 if (result == MAP_FAILED)
28 FAIL_EXIT1 ("mmap of %zu bytes, prot=0x%x, flags=0x%x: %m",
29 length, prot, flags);
30 return result;
31 }
32