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/* Copyright (c) 1992 AT&T - All rights reserved. */
#include <u.h>
#include <libc.h>
#include <libg.h>
#include <frame.h>
#include "flayer.h"
#include "samterm.h"
static char exname[64];
void
getscreen(int argc, char **argv)
{
USED(argc);
USED(argv);
binit(panic, 0, "sam");
bitblt(&screen, screen.clipr.min, &screen, screen.clipr, 0);
}
int
screensize(int *w, int *h)
{
int fd, n;
char buf[5*12+1];
fd = open("/dev/screen", OREAD);
if(fd < 0)
return 0;
n = read(fd, buf, sizeof(buf)-1);
close(fd);
if(n != sizeof(buf)-1)
return 0;
buf[n] = 0;
if(h){
*h = atoi(buf+4*12)-atoi(buf+2*12);
if (*h < 0)
return 0;
}
if(w){
*w = atoi(buf+3*12)-atoi(buf+1*12);
if (*w < 0)
return 0;
}
return 1;
}
int
snarfswap(char *fromsam, int nc, char **tosam)
{
char *s1;
int f, n;
f = open("/dev/snarf", 0);
if(f < 0)
return -1;
*tosam = s1 = alloc(SNARFSIZE);
n = read(f, s1, SNARFSIZE-1);
close(f);
if(n < 0)
n = 0;
if(n == 0){
*tosam = 0;
free(s1);
}else
s1[n] = 0;
f = create("/dev/snarf", 1, 0666);
if(f >= 0){
write(f, fromsam, nc);
close(f);
}
return n;
}
void
dumperrmsg(int count, int type, int count0, int c)
{
fprint(2, "samterm: host mesg: count %d %x %x %x %s...ignored\n",
count, type, count0, c, rcvstring());
}
void
removeextern(void)
{
remove(exname);
}
void
extstart(void)
{
char buf[32];
int fd, p[2];
if(pipe(p) < 0)
return;
sprint(exname, "/srv/sam.%s", getuser());
fd = create(exname, 1, 0600);
if(fd < 0){ /* assume existing guy is more important */
Err:
close(p[0]);
close(p[1]);
return;
}
sprint(buf, "%d", p[0]);
if(write(fd, buf, strlen(buf)) <= 0)
goto Err;
close(fd);
/*
* leave p[0] open so if the file is removed the event
* library won't get an error
*/
estart(Eextern, p[1], 8192);
atexit(removeextern);
}
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