1 /* Operating system-specific extensions to sys/uio.h - Linux version. 2 Copyright (C) 1996-2021 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #ifndef _BITS_UIO_EXT_H 20 #define _BITS_UIO_EXT_H 1 21 22 #ifndef _SYS_UIO_H 23 # error "Never include <bits/uio-ext.h> directly; use <sys/uio.h> instead." 24 #endif 25 26 __BEGIN_DECLS 27 28 /* Read from another process' address space. */ 29 extern ssize_t process_vm_readv (pid_t __pid, const struct iovec *__lvec, 30 unsigned long int __liovcnt, 31 const struct iovec *__rvec, 32 unsigned long int __riovcnt, 33 unsigned long int __flags) 34 __THROW; 35 36 /* Write to another process' address space. */ 37 extern ssize_t process_vm_writev (pid_t __pid, const struct iovec *__lvec, 38 unsigned long int __liovcnt, 39 const struct iovec *__rvec, 40 unsigned long int __riovcnt, 41 unsigned long int __flags) 42 __THROW; 43 44 /* Flags for preadv2/pwritev2. */ 45 #define RWF_HIPRI 0x00000001 /* High priority request. */ 46 #define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC. */ 47 #define RWF_SYNC 0x00000004 /* per-IO O_SYNC. */ 48 #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode. */ 49 #define RWF_APPEND 0x00000010 /* per-IO O_APPEND. */ 50 51 __END_DECLS 52 53 #endif /* bits/uio-ext.h */ 54