1/* Operating system-specific extensions to sys/uio.h - Linux version.
 2   Copyright (C) 1996-2025 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.  */
29extern 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.  */
37extern 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#define RWF_NOAPPEND	0x00000020 /* per-IO negation of O_APPEND */
51#define RWF_ATOMIC	0x00000040 /* Write is to be issued with torn-write
52				      prevention.  */
53
54__END_DECLS
55
56#endif /* bits/uio-ext.h */