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       1  /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
       2  /*
       3   *	Berkeley style UIO structures	-	Alan Cox 1994.
       4   *
       5   *		This program is free software; you can redistribute it and/or
       6   *		modify it under the terms of the GNU General Public License
       7   *		as published by the Free Software Foundation; either version
       8   *		2 of the License, or (at your option) any later version.
       9   */
      10  #ifndef __LINUX_UIO_H
      11  #define __LINUX_UIO_H
      12  
      13  
      14  #include <linux/types.h>
      15  
      16  
      17  struct iovec
      18  {
      19  	void *iov_base;	/* BSD uses caddr_t (1003.1g requires void *) */
      20  	__kernel_size_t iov_len; /* Must be size_t (1003.1g) */
      21  };
      22  
      23  /*
      24   *	UIO_MAXIOV shall be at least 16 1003.1g (5.4.1.1)
      25   */
      26   
      27  #define UIO_FASTIOV	8
      28  #define UIO_MAXIOV	1024
      29  
      30  
      31  #endif /* __LINUX_UIO_H */