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Add xfer_[v]printf() functions.

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This commit is contained in:
Michael Brown 2007-05-28 20:09:44 +00:00
parent 656485c1f1
commit a6a18ae9af
2 changed files with 45 additions and 0 deletions
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41
src/core/xfer.c
View File

@ -17,6 +17,7 @@
*/
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <gpxe/xfer.h>
@ -221,6 +222,46 @@ int xfer_deliver_raw ( struct xfer_interface *xfer,
return rc;
}
/**
* Deliver formatted string
*
* @v xfer Data transfer interface
* @v format Format string
* @v args Arguments corresponding to the format string
* @ret rc Return status code
*/
int xfer_vprintf ( struct xfer_interface *xfer, const char *format,
va_list args ) {
size_t len;
va_list args_tmp;
va_copy ( args_tmp, args );
len = vsnprintf ( NULL, 0, format, args );
{
char buf[len + 1];
vsnprintf ( buf, sizeof ( buf ), format, args_tmp );
return xfer_deliver_raw ( xfer, buf, len );
}
}
/**
* Deliver formatted string
*
* @v xfer Data transfer interface
* @v format Format string
* @v ... Arguments corresponding to the format string
* @ret rc Return status code
*/
int xfer_printf ( struct xfer_interface *xfer, const char *format, ... ) {
va_list args;
int rc;
va_start ( args, format );
rc = xfer_vprintf ( xfer, format, args );
va_end ( args );
return rc;
}
/****************************************************************************
*
* Helper methods

4
src/include/gpxe/xfer.h
View File

@ -143,6 +143,10 @@ extern int xfer_deliver_iob ( struct xfer_interface *xfer,
struct io_buffer *iobuf );
extern int xfer_deliver_raw ( struct xfer_interface *xfer,
const void *data, size_t len );
extern int xfer_vprintf ( struct xfer_interface *xfer,
const char *format, va_list args );
extern int xfer_printf ( struct xfer_interface *xfer,
const char *format, ... );
extern void ignore_xfer_close ( struct xfer_interface *xfer, int rc );
extern int ignore_xfer_vredirect ( struct xfer_interface *xfer,