readv.c

来自「Glibc 2.3.2源代码(解压后有100多M)」· C语言 代码 · 共 39 行

/* Copyright (C) 1991, 1995-1998, 2000, 2002 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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <sys/uio.h>

extern ssize_t kreadv (int fd, const struct iovec *iovp, size_t iovcnt,
		       long int ext);

/* Read data from file descriptor FD, and put the result in the
   buffers described by VECTOR, which is a vector of COUNT `struct iovec's.
   The buffers are filled in the order specified.
   Operates just like `read' (see <unistd.h>) except that data are
   put in VECTOR instead of a contiguous buffer.  */
ssize_t
__libc_readv (fd, vector, count)
     int fd;
     const struct iovec *vector;
     int count;
{
  return kreadv (fd, vector, count, 0);
}
strong_alias (__libc_readv, __readv)
weak_alias (__libc_readv, readv)