src/xcalls/x_write.c File Reference

x_write_seq, x_write_ignore, x_write_ovr implementation. More...

#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <misc/debug.h>
#include <core/tx.h>
#include <core/config.h>
#include <core/koa.h>
#include <core/buffer.h>
#include <core/txdesc.h>
#include <core/stats.h>
#include <libc/syscalls.h>
#include <xcalls/xcalls.h>

Go to the source code of this file.

Classes
struct	x_write_undo_args_s
Defines
#define	TXC_WRITE_SEQ   0x1
#define	TXC_WRITE_OVR_SAVE   0x2
#define	TXC_WRITE_OVR_IGNORE   0x3
Typedefs
typedef x_write_undo_args_s	x_write_undo_args_t
Functions
ssize_t XCALL_DEF()	x_write_seq (int fd, const void *buf, size_t nbyte, int *result)
	Write appends to a file.
ssize_t XCALL_DEF()	x_write_ovr_ignore (int fd, const void *buf, size_t nbyte, int *result)
	Writes to a file without saving any overwritten data.
ssize_t XCALL_DEF()	x_write_ovr_save (int fd, const void *buf, size_t nbyte, int *result)
	Alias of x_write_ovr.
ssize_t XCALL_DEF()	x_write_ovr (int fd, const void *buf, size_t nbyte, int *result)
	Writes to a file, while it saves any overwritten data.

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Detailed Description

x_write_seq, x_write_ignore, x_write_ovr implementation.

Definition in file x_write.c.

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Function Documentation

ssize_t XCALL_DEF() x_write_ovr	(	int	fd,
		const void *	buf,
		size_t	nbyte,
		int *	result
	)

Writes to a file, while it saves any overwritten data.

Execution : in-place

Asynchronous failures : abort

Parameters:

[in]	fd	The file descriptor of the file.
[in]	buf	The buffer that has the data to be written.
[in]	nbyte	The number of bytes to write.
[out]	result	Where to store any asynchronous failures.

Returns:

The number of written bytes on success, or -1 if a synchronous failure occurred (in which case, errno is set appropriately).

Definition at line 326 of file x_write.c.

References TXC_WRITE_OVR_SAVE.

ssize_t XCALL_DEF() x_write_ovr_ignore	(	int	fd,
		const void *	buf,
		size_t	nbyte,
		int *	result
	)

Writes to a file without saving any overwritten data.

Execution : in-place

Asynchronous failures : abort

Parameters:

[in]	fd	The file descriptor of the file.
[in]	buf	The buffer that has the data to be written.
[in]	nbyte	The number of bytes to write.
[out]	result	Where to store any asynchronous failures.

Returns:

The number of written bytes on success, or -1 if a synchronous failure occurred (in which case, errno is set appropriately).

Definition at line 295 of file x_write.c.

References TXC_WRITE_OVR_IGNORE.

ssize_t XCALL_DEF() x_write_seq	(	int	fd,
		const void *	buf,
		size_t	nbyte,
		int *	result
	)

Write appends to a file.

Execution : in-place

Asynchronous failures : abort

Parameters:

[in]	fd	The file descriptor of the file.
[in]	buf	The buffer that has the data to be written.
[in]	nbyte	The number of bytes to write.
[out]	result	Where to store any asynchronous failures.

Returns:

The number of written bytes on success, or -1 if a synchronous failure occurred (in which case, errno is set appropriately).

Definition at line 274 of file x_write.c.

References TXC_WRITE_SEQ.

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