text: #include <spawn.h>
  #include <stdlib.h>
  #include <string.h>
  #include <errno.h>
  #include "fdop.h"
  #include <unsupported_api.h>
  
  int posix_spawn_file_actions_addopen(posix_spawn_file_actions_t *restrict fa, int fd, const char *restrict path, int flags, mode_t mode)
  {
  	unsupported_api(__FUNCTION__);
  	struct fdop *op = malloc(sizeof *op + strlen(path) + 1);
  	if (!op) return ENOMEM;
  	op->cmd = FDOP_OPEN;
  	op->fd = fd;
  	op->oflag = flags;
  	op->mode = mode;
  	strcpy(op->path, path);
  	if ((op->next = fa->__actions)) op->next->prev = op;
  	op->prev = 0;
  	fa->__actions = op;
  	return 0;
  }
  