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