cosmopolitan/libc/intrin/describemapflags.c

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8                               :vi │
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 Justine Alexandra Roberts Tunney                              │
│                                                                              │
│ Permission to use, copy, modify, and/or distribute this software for         │
│ any purpose with or without fee is hereby granted, provided that the         │
│ above copyright notice and this permission notice appear in all copies.      │
│                                                                              │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
│ PERFORMANCE OF THIS SOFTWARE.                                                │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/dce.h"
#include "libc/intrin/describeflags.h"
#include "libc/macros.h"
#include "libc/nt/enum/consolemodeflags.h"
#include "libc/sysv/consts/map.h"
#include "libc/sysv/consts/prot.h"

#define MAP_GROWSDOWN_LINUX 0x00000100

const char *_DescribeMapFlags(char buf[64], int x) {
  const struct DescribeFlags kMapFlags[] = {
      {MAP_PRIVATE, "PRIVATE"},                            //
      {MAP_ANONYMOUS, "ANONYMOUS"},                        //
      {MAP_SHARED, "SHARED"},                              //
      {MAP_FIXED, "FIXED"},                                //
      {MAP_FIXED_NOREPLACE, "FIXED_NOREPLACE"},            //
      {MAP_HUGETLB, "HUGETLB"},                            //
      {MAP_CONCEAL, "CONCEAL"},                            //
      {MAP_LOCKED, "LOCKED"},                              //
      {MAP_NORESERVE, "NORESERVE"},                        //
      {MAP_NONBLOCK, "NONBLOCK"},                          //
      {MAP_POPULATE, "POPULATE"},                          //
      {IsLinux() ? MAP_GROWSDOWN_LINUX : 0, "GROWSDOWN"},  //
  };
  return _DescribeFlags(buf, 64, kMapFlags, ARRAYLEN(kMapFlags), "MAP_", x);
}