copy_file.c File Reference

Functions to fast copy files. More...

#include <sys/errno.h>
#include <fcntl.h>
#include <sys/sendfile.h>
#include <sys/stat.h>
#include <unistd.h>

Macros
#define	COPYFILE_ALL   0
	Flag to copy the enture file.

Functions
size_t	copyfile (const char *src, const char *dest, const int unused_1, const int unused_2)
	Copy a file from the source to the destination. More...
int	copy_file_c (const char *src, const char *dest)
	Copy a file from the source to the destination. More...

Detailed Description

Functions to fast copy files.

MPI and calls to fork do not mix well. In place of slow copies this makes Kernel function calls to the OS fast copy systems by passing a fork to the cp command.

Function Documentation

copy_file_c()

int copy_file_c	(	const char *	src,
		const char *	dest
	)

Copy a file from the source to the destination.

Copy file returns the error status. Check errno to see the error that occurred.

Parameters

[in]	src	Path to the source file to copy.
[in]	dest	Path to the destination file to copy.

Returns

Error code.

copyfile()

size_t copyfile	(	const char *	src,
		const char *	dest,
		const int	unused_1,
		const int	unused_2
	)

Copy a file from the source to the destination.

Linux does not define the copyfile function. Define one using the sendfile(2) function.

Parameters

[in]	src	Path to the source file to copy.
[in]	dest	Path to the destination file to copy.
[in]	unused_1	Unused argument.
[in]	unused_2	Unused argument.

Returns

Error status.