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#include <config.h>
#include "transformation.h"
/*
* Initialize
*/
static int
null_initialize(UNUSED(Transformation *xform), UNUSED(int enc))
{
return 0;
}
/*
* Shut down.
*/
static int
null_shutdown(UNUSED(Transformation *xform))
{
return 0;
}
/*
* Handle fork.
*/
static int
null_startNewTape(UNUSED(Transformation *xform), UNUSED(struct tapebuf *tpbin),
UNUSED(unsigned long *destlen))
{
return 0;
}
/*
* Start slave process.
*/
static int
null_startDiskIOProcess(UNUSED(Transformation *xform))
{
return 0;
}
/*
* End slave process.
*/
static int
null_endDiskIOProcess(UNUSED(Transformation *xform))
{
return 0;
}
/*
* Compress a buffer.
*/
static int
null_compress(UNUSED(Transformation *xform), struct tapebuf *tpbin, unsigned long *destlen,
const char *src, int srclen)
{
memcpy(tpbin->buf, src, srclen);
*destlen = srclen;
return 1;
}
/*
* Decompress a buffer.
*/
static int
null_decompress(UNUSED(Transformation *xform), struct tapebuf *tpbin, unsigned long *destlen,
const char *src, int srclen, UNUSED(char **reason))
{
memcpy(tpbin->buf, src, srclen);
*destlen = srclen;
return 1;
}
/*
*
*/
Transformation transformation_null =
{
0,
{0},
"null",
0,
&null_initialize,
&null_shutdown,
&null_startNewTape,
&null_startDiskIOProcess,
&null_endDiskIOProcess,
&null_compress,
&null_decompress
};
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