ack/plat/pc86/libsys/_sys_write.c

56 lines
720 B
C

/* $Source$
* $State$
* $Revision$
*/
#include <stdlib.h>
#include <errno.h>
#include <sgtty.h>
#include "libsys.h"
extern struct
{
int fd;
const char* buffer;
size_t count;
} _sys_params_in;
extern struct
{
size_t byteswritten;
} _sys_params_out;
#define P _sys_params_in
void _sys_write_tty(char c)
{
_sys_rawwrite(c);
if ((c == '\n') && !(_sys_ttyflags & RAW))
_sys_rawwrite('\r');
}
int _sys_write(void)
{
int i;
/* We're only allowed to write to fd 0, 1 or 2. */
if ((P.fd < 0) || (P.fd > 2))
return EBADF;
/* Write all data. */
i = 0;
while (i < P.count)
{
_sys_write_tty(*P.buffer++);
i++;
}
/* No failures. */
_sys_params_out.byteswritten = P.count;
return 0;
}