1  /*
       2   * pidfd_getfd() syscall decoder.
       3   *
       4   * Copyright (c) 2020-2021 The strace developers.
       5   * All rights reserved.
       6   *
       7   * SPDX-License-Identifier: LGPL-2.1-or-later
       8   */
       9  
      10  #include "defs.h"
      11  #include "number_set.h"
      12  
      13  SYS_FUNC(pidfd_getfd)
      14  {
      15  	int pidfd = (int) tcp->u_arg[0];
      16  	int targetfd = (int) tcp->u_arg[1];
      17  	unsigned int flags = (unsigned int) tcp->u_arg[2];
      18  
      19  	/* pidfd */
      20  	printfd(tcp, pidfd);
      21  	tprint_arg_next();
      22  
      23  	/* targetfd */
      24  	pid_t target_pid = pidfd_get_pid(tcp->pid, pidfd);
      25  	if (target_pid > 0)
      26  		printfd_pid(tcp, target_pid, targetfd);
      27  	else
      28  		PRINT_VAL_D(targetfd);
      29  	tprint_arg_next();
      30  
      31  	/* flags */
      32  	PRINT_VAL_X(flags);
      33  
      34  	return RVAL_DECODED | RVAL_FD;
      35  }