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- /* Operating system-specific extensions to sys/uio.h - Linux version.
- Copyright (C) 1996-2026 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <https://www.gnu.org/licenses/>. */
- #ifndef _BITS_UIO_EXT_H
- #define _BITS_UIO_EXT_H 1
- #ifndef _SYS_UIO_H
- # error "Never include <bits/uio-ext.h> directly; use <sys/uio.h> instead."
- #endif
- __BEGIN_DECLS
- /* Read from another process' address space. */
- extern ssize_t process_vm_readv (pid_t __pid, const struct iovec *__lvec,
- unsigned long int __liovcnt,
- const struct iovec *__rvec,
- unsigned long int __riovcnt,
- unsigned long int __flags)
- __THROW;
- /* Write to another process' address space. */
- extern ssize_t process_vm_writev (pid_t __pid, const struct iovec *__lvec,
- unsigned long int __liovcnt,
- const struct iovec *__rvec,
- unsigned long int __riovcnt,
- unsigned long int __flags)
- __THROW;
- /* Flags for preadv2/pwritev2. */
- #define RWF_HIPRI 0x00000001 /* High priority request. */
- #define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC. */
- #define RWF_SYNC 0x00000004 /* per-IO O_SYNC. */
- #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode. */
- #define RWF_APPEND 0x00000010 /* per-IO O_APPEND. */
- #define RWF_NOAPPEND 0x00000020 /* per-IO negation of O_APPEND */
- #define RWF_ATOMIC 0x00000040 /* Write is to be issued with torn-write
- prevention. */
- #define RWF_DONTCACHE 0x00000080 /* Uncached buffered IO. */
- __END_DECLS
- #endif /* bits/uio-ext.h */
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