static
uchar*
pqid(uchar *p, Qid *q)
{
PBIT8(p, q->type);
p += BIT8SZ;
PBIT32(p, q->vers);
p += BIT32SZ;
PBIT64(p, q->path);
p += BIT64SZ;
return p;
}
static int
pcicfgrw(Pcidev *pcidev, int rno, int data, int len, int read)
{
uchar buf[4];
if(read){
memset(buf, 0, sizeof(buf));
if(pread(pcidev->rawfd, buf, len, rno) != len)
return -1;
switch(len){
case 1:
return GBIT8(buf);
case 2:
return GBIT16(buf);
case 4:
return GBIT32(buf);
default:
abort();
}
} else {
switch(len){
case 1:
PBIT8(buf, data);
break;
case 2:
PBIT16(buf, data);
break;
case 4:
PBIT32(buf, data);
break;
default:
abort();
}
if(pwrite(pcidev->rawfd, buf, len, rno) != len)
return -1;
}
return 0;
}
uint
convD2M(Dir *d, uchar *buf, uint nbuf)
{
uchar *p, *ebuf;
char *sv[5];
int i, ns, nsv[5], ss, nstr, fixlen;
if(nbuf < BIT16SZ)
return 0;
p = buf;
ebuf = buf + nbuf;
sv[0] = d->name;
sv[1] = d->uid;
sv[2] = d->gid;
sv[3] = d->muid;
fixlen = STATFIXLEN;
nstr = 4;
ns = 0;
for(i = 0; i < nstr; i++) {
if(sv[i])
nsv[i] = strlen(sv[i]);
else
nsv[i] = 0;
ns += nsv[i];
}
ss = fixlen + ns;
/* set size befor erroring, so user can know how much is needed */
/* note that length excludes count field itself */
PBIT16(p, ss-BIT16SZ);
p += BIT16SZ;
if(ss > nbuf)
return BIT16SZ;
PBIT16(p, d->type);
p += BIT16SZ;
PBIT32(p, d->dev);
p += BIT32SZ;
PBIT8(p, d->qid.type);
p += BIT8SZ;
PBIT32(p, d->qid.vers);
p += BIT32SZ;
PBIT64(p, d->qid.path);
p += BIT64SZ;
PBIT32(p, d->mode);
p += BIT32SZ;
PBIT32(p, d->atime);
p += BIT32SZ;
PBIT32(p, d->mtime);
p += BIT32SZ;
PBIT64(p, d->length);
p += BIT64SZ;
for(i = 0; i < nstr; i++) {
ns = nsv[i];
if(p + ns + BIT16SZ > ebuf)
return 0;
PBIT16(p, ns);
p += BIT16SZ;
if(ns)
memmove(p, sv[i], ns);
p += ns;
}
if(ss != p - buf)
return 0;
return p - buf;
}
uint
convS2M(Fcall *f, uchar *ap, uint nap)
{
uchar *p;
uint i, size;
size = sizeS2M(f);
if(size == 0)
return 0;
if(size > nap)
return 0;
p = (uchar*)ap;
PBIT32(p, size);
p += BIT32SZ;
PBIT8(p, f->type);
p += BIT8SZ;
PBIT16(p, f->tag);
p += BIT16SZ;
switch(f->type)
{
default:
return 0;
case Tversion:
PBIT32(p, f->msize);
p += BIT32SZ;
p = pstring(p, f->version);
break;
case Tflush:
PBIT16(p, f->oldtag);
p += BIT16SZ;
break;
case Tauth:
PBIT32(p, f->afid);
p += BIT32SZ;
p = pstring(p, f->uname);
p = pstring(p, f->aname);
break;
case Tattach:
PBIT32(p, f->fid);
p += BIT32SZ;
PBIT32(p, f->afid);
p += BIT32SZ;
p = pstring(p, f->uname);
p = pstring(p, f->aname);
break;
case Twalk:
PBIT32(p, f->fid);
p += BIT32SZ;
PBIT32(p, f->newfid);
p += BIT32SZ;
PBIT16(p, f->nwname);
p += BIT16SZ;
if(f->nwname > MAXWELEM)
return 0;
for(i=0; i<f->nwname; i++)
p = pstring(p, f->wname[i]);
break;
case Topen:
PBIT32(p, f->fid);
p += BIT32SZ;
PBIT8(p, f->mode);
p += BIT8SZ;
break;
case Tcreate:
PBIT32(p, f->fid);
p += BIT32SZ;
p = pstring(p, f->name);
PBIT32(p, f->perm);
p += BIT32SZ;
PBIT8(p, f->mode);
p += BIT8SZ;
break;
case Tread:
PBIT32(p, f->fid);
p += BIT32SZ;
PBIT64(p, f->offset);
p += BIT64SZ;
PBIT32(p, f->count);
p += BIT32SZ;
break;
case Twrite:
PBIT32(p, f->fid);
p += BIT32SZ;
PBIT64(p, f->offset);
p += BIT64SZ;
PBIT32(p, f->count);
p += BIT32SZ;
memmove(p, f->data, f->count);
p += f->count;
break;
case Tclunk:
case Tremove:
PBIT32(p, f->fid);
p += BIT32SZ;
break;
case Tstat:
PBIT32(p, f->fid);
p += BIT32SZ;
break;
case Twstat:
PBIT32(p, f->fid);
p += BIT32SZ;
PBIT16(p, f->nstat);
p += BIT16SZ;
memmove(p, f->stat, f->nstat);
p += f->nstat;
break;
/*
*/
case Rversion:
PBIT32(p, f->msize);
p += BIT32SZ;
p = pstring(p, f->version);
break;
case Rerror:
p = pstring(p, f->ename);
break;
case Rflush:
break;
case Rauth:
p = pqid(p, &f->aqid);
break;
case Rattach:
p = pqid(p, &f->qid);
break;
case Rwalk:
PBIT16(p, f->nwqid);
p += BIT16SZ;
if(f->nwqid > MAXWELEM)
return 0;
for(i=0; i<f->nwqid; i++)
p = pqid(p, &f->wqid[i]);
break;
case Ropen:
case Rcreate:
p = pqid(p, &f->qid);
PBIT32(p, f->iounit);
p += BIT32SZ;
break;
case Rread:
PBIT32(p, f->count);
p += BIT32SZ;
memmove(p, f->data, f->count);
p += f->count;
break;
case Rwrite:
PBIT32(p, f->count);
p += BIT32SZ;
break;
case Rclunk:
break;
case Rremove:
break;
case Rstat:
PBIT16(p, f->nstat);
p += BIT16SZ;
memmove(p, f->stat, f->nstat);
p += f->nstat;
break;
case Rwstat:
break;
}
if(size != p-ap)
return 0;
return size;
}