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* misc/Makefile (routines): Add preadv, preadv64, pwritev, pwritev64.

Browse Source 
* misc/Versions: Export preadv, preadv64, pwritev, pwritev64 for
	GLIBC_2.10.
	* misc/sys/uio.h: Declare preadv, preadv64, pwritev, pwritev64.
	* sysdeps/unix/sysv/linux/kernel-features.h: Add entries for preadv
	and pwritev.
	* misc/preadv.c: New file.
	* misc/preadv64.c: New file.
	* misc/pwritev.c: New file.
	* misc/pwritev64.c: New file.
	* sysdeps/posx/preadv.c: New file.
	* sysdeps/posx/preadv64.c: New file.
	* sysdeps/posx/pwritev.c: New file.
	* sysdeps/posx/pwritev64.c: New file.
	* sysdeps/unix/sysv/linux/preadv.c: New file.
	* sysdeps/unix/sysv/linux/preadv64.c: New file.
	* sysdeps/unix/sysv/linux/pwritev.c: New file.
	* sysdeps/unix/sysv/linux/pwritev64.c: New file.
	* sysdeps/unix/sysv/linux/wordsize-64/preadv64.c: New file.
	* sysdeps/unix/sysv/linux/wordsize-64/pwritev64.c: New file.
This commit is contained in:
Ulrich Drepper
2009-04-03 19:57:16 +00:00
parent 7166c77ad0
commit e109c6124f
20 changed files with 708 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

83
misc/sys/uio.h
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1991, 92, 96, 97, 98, 99, 2003 Free Software Foundation, Inc.
/* Copyright (C) 1991,1992,1996-1999,2003,2009 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
@ -30,24 +30,93 @@ __BEGIN_DECLS
/* Read data from file descriptor FD, and put the result in the
buffers described by IOVEC, which is a vector of COUNT `struct iovec's.
buffers described by IOVEC, 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
Operates just like 'read' (see <unistd.h>) except that data are
put in IOVEC instead of a contiguous buffer.
This function is a cancellation point and therefore not marked with
__THROW. */
extern ssize_t readv (int __fd, __const struct iovec *__iovec, int __count);
extern ssize_t readv (int __fd, __const struct iovec *__iovec, int __count)
__wur;
/* Write data pointed by the buffers described by IOVEC, which
is a vector of COUNT `struct iovec's, to file descriptor FD.
is a vector of COUNT 'struct iovec's, to file descriptor FD.
The data is written in the order specified.
Operates just like `write' (see <unistd.h>) except that the data
Operates just like 'write' (see <unistd.h>) except that the data
are taken from IOVEC instead of a contiguous buffer.
This function is a cancellation point and therefore not marked with
__THROW. */
extern ssize_t writev (int __fd, __const struct iovec *__iovec, int __count);
extern ssize_t writev (int __fd, __const struct iovec *__iovec, int __count)
__wur;
#ifdef __USE_BSD
# ifndef __USE_FILE_OFFSET64
/* Read data from file descriptor FD at the given position OFFSET
without change the file pointer, and put the result in the buffers
described by IOVEC, 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 IOVEC instead
of a contiguous buffer.
This function is a cancellation point and therefore not marked with
__THROW. */
extern ssize_t preadv (int __fd, __const struct iovec *__iovec, int __count,
__off_t __offset) __wur;
/* Write data pointed by the buffers described by IOVEC, which is a
vector of COUNT 'struct iovec's, to file descriptor FD at the given
position OFFSET without change the file pointer. The data is
written in the order specified. Operates just like 'write' (see
<unistd.h>) except that the data are taken from IOVEC instead of a
contiguous buffer.
This function is a cancellation point and therefore not marked with
__THROW. */
extern ssize_t pwritev (int __fd, __const struct iovec *__iovec, int __count,
__off_t __offset) __wur;
# else
# ifdef __REDIRECT
extern ssize_t __REDIRECT (preadv, (int __fd, __const struct iovec *__iovec,
int __count, __off_t __offset),
preadv64) __wur;
extern ssize_t __REDIRECT (pwritev, (int __fd, __const struct iovec *__iovec,
int __count, __off_t __offset),
pwritev64) __wur;
# else
# define preadv preadv64
# define pwritev pwritev64
# endif
# endif
# ifdef __USE_LARGEFILE64
/* Read data from file descriptor FD at the given position OFFSET
without change the file pointer, and put the result in the buffers
described by IOVEC, 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 IOVEC instead
of a contiguous buffer.
This function is a cancellation point and therefore not marked with
__THROW. */
extern ssize_t preadv64 (int __fd, __const struct iovec *__iovec, int __count,
__off64_t __offset) __wur;
/* Write data pointed by the buffers described by IOVEC, which is a
vector of COUNT 'struct iovec's, to file descriptor FD at the given
position OFFSET without change the file pointer. The data is
written in the order specified. Operates just like 'write' (see
<unistd.h>) except that the data are taken from IOVEC instead of a
contiguous buffer.
This function is a cancellation point and therefore not marked with
__THROW. */
extern ssize_t pwritev64 (int __fd, __const struct iovec *__iovec, int __count,
__off64_t __offset) __wur;
# endif
#endif /* Use BSD */
__END_DECLS