static long
conswrite(Chan *c, void *va, long n, vlong offset)
{
char buf[128], *a, ch;
int x;
if(c->qid.type & QTDIR)
error(Eperm);
switch((ulong)c->qid.path) {
default:
error(Egreg);
case Qcons:
if(canrlock(&kprintq.l)){
if(kprintq.q != nil){
if(waserror()){
runlock(&kprintq.l);
nexterror();
}
qwrite(kprintq.q, va, n);
poperror();
runlock(&kprintq.l);
return n;
}
runlock(&kprintq.l);
}
return write(1, va, n);
case Qsysctl:
return sysconwrite(va, n);
case Qconsctl:
if(n >= sizeof(buf))
n = sizeof(buf)-1;
strncpy(buf, va, n);
buf[n] = 0;
for(a = buf; a;){
if(strncmp(a, "rawon", 5) == 0){
kbd.raw = 1;
/* clumsy hack - wake up reader */
ch = 0;
qwrite(kbdq, &ch, 1);
} else if(strncmp(buf, "rawoff", 6) == 0){
kbd.raw = 0;
}
if((a = strchr(a, ' ')) != nil)
a++;
}
break;
case Qkeyboard:
for(x=0; x<n; ) {
Rune r;
x += chartorune(&r, &((char*)va)[x]);
gkbdputc(gkbdq, r);
}
break;
case Qnull:
break;
case Qtime:
if(n >= sizeof(buf))
n = sizeof(buf)-1;
strncpy(buf, va, n);
buf[n] = '\0';
timeoffset = strtoll(buf, 0, 0)-osusectime();
break;
case Qhostowner:
if(!iseve())
error(Eperm);
if(offset != 0 || n >= sizeof(buf))
error(Ebadarg);
memmove(buf, va, n);
buf[n] = '\0';
if(n > 0 && buf[n-1] == '\n')
buf[--n] = '\0';
if(n == 0)
error(Ebadarg);
/* renameuser(eve, buf); */
/* renameproguser(eve, buf); */
kstrdup(&eve, buf);
kstrdup(&up->env->user, buf);
break;
case Quser:
if(!iseve())
error(Eperm);
if(offset != 0)
error(Ebadarg);
if(n <= 0 || n >= sizeof(buf))
error(Ebadarg);
strncpy(buf, va, n);
buf[n] = '\0';
if(n > 0 && buf[n-1] == '\n')
buf[--n] = '\0';
if(n == 0)
error(Ebadarg);
setid(buf, 0);
break;
case Qhoststdout:
return write(1, va, n);
case Qhoststderr:
return write(2, va, n);
case Qjit:
if(n >= sizeof(buf))
n = sizeof(buf)-1;
strncpy(buf, va, n);
buf[n] = '\0';
x = atoi(buf);
if(x < 0 || x > 9)
error(Ebadarg);
cflag = x;
break;
case Qsysname:
if(offset != 0)
error(Ebadarg);
if(n < 0 || n >= sizeof(buf))
error(Ebadarg);
strncpy(buf, va, n);
buf[n] = '\0';
if(buf[n-1] == '\n')
buf[n-1] = 0;
kstrdup(&ossysname, buf);
break;
}
return n;
}
long
conswrite(Chan *c, void *va, long count, vlong offset)
{
char buf[128], *p;
int x, y;
USED(offset);
if(c->qid.type & QTDIR)
error(Eperm);
switch((ulong)c->qid.path) {
default:
error(Egreg);
case Qcons:
if(canrlock(&kprintq.l)){
if(kprintq.q != nil){
if(waserror()){
runlock(&kprintq.l);
nexterror();
}
qwrite(kprintq.q, va, count);
poperror();
runlock(&kprintq.l);
return count;
}
runlock(&kprintq.l);
}
return write(1, va, count);
case Qsysctl:
return sysconwrite(va, count);
case Qconsctl:
if(count >= sizeof(buf))
count = sizeof(buf)-1;
strncpy(buf, va, count);
buf[count] = 0;
if(strncmp(buf, "rawon", 5) == 0) {
kbd.raw = 1;
return count;
}
else
if(strncmp(buf, "rawoff", 6) == 0) {
kbd.raw = 0;
return count;
}
error(Ebadctl);
case Qkeyboard:
for(x=0; x<count; ) {
Rune r;
x += chartorune(&r, &((char*)va)[x]);
gkbdputc(gkbdq, r);
}
return count;
case Qpointer:
if(count > sizeof buf-1)
count = sizeof buf -1;
memmove(buf, va, count);
buf[count] = 0;
p = nil;
x = strtoul(buf+1, &p, 0);
if(p == nil || p == buf+1)
error(Eshort);
y = strtoul(p, 0, 0);
setpointer(x, y);
return count;
case Qnull:
return count;
case Qpin:
if(up->env->pgrp->pin != Nopin)
error("pin already set");
if(count >= sizeof(buf))
count = sizeof(buf)-1;
strncpy(buf, va, count);
buf[count] = '\0';
up->env->pgrp->pin = atoi(buf);
return count;
case Qtime:
if(count >= sizeof(buf))
count = sizeof(buf)-1;
strncpy(buf, va, count);
buf[count] = '\0';
timeoffset = strtoll(buf, 0, 0)-osusectime();
return count;
case Quser:
if(count >= sizeof(buf))
error(Ebadarg);
strncpy(buf, va, count);
buf[count] = '\0';
if(count > 0 && buf[count-1] == '\n')
buf[--count] = '\0';
if(count == 0)
error(Ebadarg);
if(strcmp(up->env->user, eve) != 0)
error(Eperm);
setid(buf, 0);
return count;
case Qhostowner:
if(count >= sizeof(buf))
error(Ebadarg);
strncpy(buf, va, count);
buf[count] = '\0';
if(count > 0 && buf[count-1] == '\n')
buf[--count] = '\0';
if(count == 0)
error(Ebadarg);
if(strcmp(up->env->user, eve) != 0)
error(Eperm);
kstrdup(&eve, buf);
return count;
case Qhoststdout:
return write(1, va, count);
case Qhoststderr:
return write(2, va, count);
case Qjit:
if(count >= sizeof(buf))
count = sizeof(buf)-1;
strncpy(buf, va, count);
buf[count] = '\0';
x = atoi(buf);
if (x < 0 || x > 9)
error(Ebadarg);
cflag = x;
return count;
case Qsysname:
if(count >= sizeof(buf))
count = sizeof(buf)-1;
strncpy(buf, va, count);
buf[count] = '\0';
kstrdup(&ossysname, buf);
return count;
case Qsnarf:
if(offset+count >= SnarfSize)
error(Etoobig);
snarftab->qid.vers++;
memmove((uchar*)(c->aux)+offset, va, count);
return count;
}
return 0;
}