glibc/sysdeps/unix/sysv/linux/bits/uio-ext.h

54 lines
1.9 KiB
C

/* Operating system-specific extensions to sys/uio.h - Linux version.
Copyright (C) 1996-2020 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. */
__END_DECLS
#endif /* bits/uio-ext.h */