modernc.org/cc@v1.0.1/v2/headers/linux_arm/usr/include/arm-linux-gnueabihf/bits/uio.h (about)

     1  /* Copyright (C) 1996-2016 Free Software Foundation, Inc.
     2     This file is part of the GNU C Library.
     3  
     4     The GNU C Library is free software; you can redistribute it and/or
     5     modify it under the terms of the GNU Lesser General Public
     6     License as published by the Free Software Foundation; either
     7     version 2.1 of the License, or (at your option) any later version.
     8  
     9     The GNU C Library is distributed in the hope that it will be useful,
    10     but WITHOUT ANY WARRANTY; without even the implied warranty of
    11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    12     Lesser General Public License for more details.
    13  
    14     You should have received a copy of the GNU Lesser General Public
    15     License along with the GNU C Library; if not, see
    16     <http://www.gnu.org/licenses/>.  */
    17  
    18  #if !defined _SYS_UIO_H && !defined _FCNTL_H
    19  #error "Never include <bits/uio.h> directly; use <sys/uio.h> instead."
    20  #endif
    21  
    22  #ifndef _BITS_UIO_H
    23  #define _BITS_UIO_H	1
    24  
    25  #include <sys/types.h>
    26  
    27  /* We should normally use the Linux kernel header file to define this
    28     type and macros but this calls for trouble because of the header
    29     includes other kernel headers.  */
    30  
    31  /* Size of object which can be written atomically.
    32  
    33     This macro has different values in different kernel versions.  The
    34     latest versions of the kernel use 1024 and this is good choice.  Since
    35     the C library implementation of readv/writev is able to emulate the
    36     functionality even if the currently running kernel does not support
    37     this large value the readv/writev call will not fail because of this.  */
    38  #define UIO_MAXIOV	1024
    39  
    40  /* Structure for scatter/gather I/O.  */
    41  struct iovec {
    42  	void *iov_base;		/* Pointer to data.  */
    43  	size_t iov_len;		/* Length of data.  */
    44  };
    45  
    46  #endif
    47  
    48  #ifdef __USE_GNU
    49  #if defined _SYS_UIO_H && !defined _BITS_UIO_H_FOR_SYS_UIO_H
    50  #define _BITS_UIO_H_FOR_SYS_UIO_H 1
    51  
    52  __BEGIN_DECLS
    53  /* Read from another process' address space.  */
    54  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;
    55  
    56  /* Write to another process' address space.  */
    57  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;
    58  
    59  __END_DECLS
    60  #endif
    61  #endif