text: /*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
  │vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
  ╞══════════════════════════════════════════════════════════════════════════════╡
  │ Copyright 2021 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/bits/weaken.h"
  #include "libc/calls/internal.h"
  #include "libc/calls/metalfile.internal.h"
  #include "libc/mem/mem.h"
  #include "libc/runtime/runtime.h"
  #include "libc/str/str.h"
  #include "libc/sysv/errfuns.h"
  
  int sys_openat_metal(int dirfd, const char *file, int flags, unsigned mode) {
    int fd;
    struct MetalFile *state;
    if (strcmp(file, "ape.com")) return enoent();
    if (!weaken(calloc)) return enomem();
    if ((fd = __reservefd(-1)) == -1) return -1;
    state = weaken(calloc)(1, sizeof(struct MetalFile));
    state->base = (char *)_base;
    state->size = _end - _base;
    g_fds.p[fd].kind = kFdFile;
    g_fds.p[fd].flags = flags;
    g_fds.p[fd].mode = mode;
    g_fds.p[fd].handle = (intptr_t)state;
    return fd;
  }
  