148 lines
2.7 KiB
C
148 lines
2.7 KiB
C
|
#include <u.h>
|
||
|
|
#include <libc.h>
|
||
|
|
#include <fcall.h>
|
||
|
|
#include <thread.h>
|
||
|
|
#include <9p.h>
|
||
|
|
#include "dat.h"
|
||
|
|
|
||
|
|
Channel *fschan;
|
||
|
|
Channel *writechan;
|
||
|
|
|
||
|
|
static File *devcons, *devnew;
|
||
|
|
|
||
|
|
static void
|
||
|
|
fsread(Req *r)
|
||
|
|
{
|
||
|
|
Fsevent e;
|
||
|
|
|
||
|
|
if(r->fid->file == devnew){
|
||
|
|
if(r->fid->aux==nil){
|
||
|
|
respond(r, "phase error");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
readstr(r, r->fid->aux);
|
||
|
|
respond(r, nil);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
assert(r->fid->file == devcons);
|
||
|
|
e.type = 'r';
|
||
|
|
e.r = r;
|
||
|
|
send(fschan, &e);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
fsflush(Req *r)
|
||
|
|
{
|
||
|
|
Fsevent e;
|
||
|
|
|
||
|
|
e.type = 'f';
|
||
|
|
e.r = r;
|
||
|
|
send(fschan, &e);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
fswrite(Req *r)
|
||
|
|
{
|
||
|
|
static Event *e[4];
|
||
|
|
Event *ep;
|
||
|
|
int i, j, ei, nb, wid, pid;
|
||
|
|
Rune rune;
|
||
|
|
char *s;
|
||
|
|
char tmp[UTFmax], *t;
|
||
|
|
static int n, partial;
|
||
|
|
|
||
|
|
if(r->fid->file == devnew){
|
||
|
|
if(r->fid->aux){
|
||
|
|
respond(r, "already created a window");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
s = emalloc(r->ifcall.count+1);
|
||
|
|
memmove(s, r->ifcall.data, r->ifcall.count);
|
||
|
|
s[r->ifcall.count] = 0;
|
||
|
|
pid = strtol(s, &t, 0);
|
||
|
|
if(*t==' ')
|
||
|
|
t++;
|
||
|
|
i = newpipewin(pid, t);
|
||
|
|
free(s);
|
||
|
|
s = emalloc(32);
|
||
|
|
sprint(s, "%lud", (ulong)i);
|
||
|
|
r->fid->aux = s;
|
||
|
|
r->ofcall.count = r->ifcall.count;
|
||
|
|
respond(r, nil);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
assert(r->fid->file == devcons);
|
||
|
|
|
||
|
|
if(e[0] == nil){
|
||
|
|
for(i=0; i<nelem(e); i++){
|
||
|
|
e[i] = emalloc(sizeof(Event));
|
||
|
|
e[i]->c1 = 'S';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
ep = e[n];
|
||
|
|
n = (n+1)%nelem(e);
|
||
|
|
assert(r->ifcall.count <= 8192); /* is this guaranteed by lib9p? */
|
||
|
|
nb = r->ifcall.count;
|
||
|
|
memmove(ep->b+partial, r->ifcall.data, nb);
|
||
|
|
nb += partial;
|
||
|
|
ep->b[nb] = '\0';
|
||
|
|
if(strlen(ep->b) < nb){ /* nulls in data */
|
||
|
|
t = ep->b;
|
||
|
|
for(i=j=0; i<nb; i++)
|
||
|
|
if(ep->b[i] != '\0')
|
||
|
|
t[j++] = ep->b[i];
|
||
|
|
nb = j;
|
||
|
|
t[j] = '\0';
|
||
|
|
}
|
||
|
|
ei = nb>8192? 8192 : nb;
|
||
|
|
/* process bytes into runes, transferring terminal partial runes into next buffer */
|
||
|
|
for(i=j=0; i<ei && fullrune(ep->b+i, ei-i); i+=wid,j++)
|
||
|
|
wid = chartorune(&rune, ep->b+i);
|
||
|
|
memmove(tmp, ep->b+i, nb-i);
|
||
|
|
partial = nb-i;
|
||
|
|
ep->nb = i;
|
||
|
|
ep->nr = j;
|
||
|
|
ep->b[i] = '\0';
|
||
|
|
if(i != 0){
|
||
|
|
sendp(win->cevent, ep);
|
||
|
|
recvp(writechan);
|
||
|
|
}
|
||
|
|
partial = nb-i;
|
||
|
|
memmove(e[n]->b, tmp, partial);
|
||
|
|
r->ofcall.count = r->ifcall.count;
|
||
|
|
respond(r, nil);
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
fsdestroyfid(Fid *fid)
|
||
|
|
{
|
||
|
|
if(fid->aux)
|
||
|
|
free(fid->aux);
|
||
|
|
}
|
||
|
|
|
||
|
|
Srv fs = {
|
||
|
|
.read= fsread,
|
||
|
|
.write= fswrite,
|
||
|
|
.flush= fsflush,
|
||
|
|
.destroyfid= fsdestroyfid,
|
||
|
|
.leavefdsopen= 1,
|
||
|
|
};
|
||
|
|
|
||
|
|
void
|
||
|
|
mountcons(void)
|
||
|
|
{
|
||
|
|
fschan = chancreate(sizeof(Fsevent), 0);
|
||
|
|
writechan = chancreate(sizeof(void*), 0);
|
||
|
|
fs.tree = alloctree("win", "win", DMDIR|0555, nil);
|
||
|
|
devcons = createfile(fs.tree->root, "cons", "win", 0666, nil);
|
||
|
|
if(devcons == nil)
|
||
|
|
sysfatal("creating /dev/cons: %r");
|
||
|
|
devnew = createfile(fs.tree->root, "wnew", "win", 0666, nil);
|
||
|
|
if(devnew == nil)
|
||
|
|
sysfatal("creating /dev/wnew: %r");
|
||
|
|
threadpostmountsrv(&fs, nil, "/dev", MBEFORE);
|
||
|
|
}
|