libc-bottom-half/cloudlibc/src/libc/unistd/write.c


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// Copyright (c) 2015-2016 Nuxi, https://nuxi.nl/
//
// SPDX-License-Identifier: BSD-2-Clause

#include <wasi/api.h>
#include <errno.h>
#include <unistd.h>

ssize_t write(int fildes, const void *buf, size_t nbyte) {
  __wasi_ciovec_t iov = {.buf = buf, .buf_len = nbyte};
  size_t bytes_written;
  __wasi_errno_t error =
      __wasi_fd_write(fildes, &iov, 1, &bytes_written);
  if (error != 0) {
    errno = error == ENOTCAPABLE ? EBADF : error;
    return -1;
  }
  return bytes_written;
}