static int
vcongen(Chan *c, char *d, Dirtab* dir, int i, int s, Dir *dp)
{
Proc *up = externup();
Qid q;
int t = TYPE(c->qid);
int vdidx = DEV(c->qid);
if(vdidx >= nvcon)
error(Ebadarg);
switch(t){
case Qtopdir:
if(s == DEVDOTDOT){
q = (Qid){QID(0, Qtopdir), 0, QTDIR};
snprint(up->genbuf, sizeof up->genbuf, "#%C", vcondevtab.dc);
devdir(c, q, up->genbuf, 0, eve, DMDIR|0555, dp);
return 1;
}
return devgen(c, nil, topdir, nelem(topdir), s, dp);
case Qvirtcon:
if(s == DEVDOTDOT){
q = (Qid){QID(0, Qtopdir), 0, QTDIR};
snprint(up->genbuf, sizeof up->genbuf, "#%C", vcondevtab.dc);
devdir(c, q, up->genbuf, 0, eve, DMDIR|0555, dp);
return 1;
}
if(s >= nvcon)
return -1;
snprint(up->genbuf, sizeof up->genbuf, vcons[s]->devname);
q = (Qid) {QID(s, Qvcpipe), 0, 0};
devdir(c, q, up->genbuf, 0, eve, 0666, dp);
return 1;
}
return -1;
}
static int
cmd3gen(Chan *c, int i, Dir *dp)
{
Qid q;
Conv *cv;
cv = cmd.conv[CONV(c->qid)];
switch(i){
default:
return -1;
case Qdata:
mkqid(&q, QID(CONV(c->qid), Qdata), 0, QTFILE);
devdir(c, q, "data", 0, cv->owner, cv->perm, dp);
return 1;
case Qstderr:
mkqid(&q, QID(CONV(c->qid), Qstderr), 0, QTFILE);
devdir(c, q, "stderr", 0, cv->owner, 0444, dp);
return 1;
case Qctl:
mkqid(&q, QID(CONV(c->qid), Qctl), 0, QTFILE);
devdir(c, q, "ctl", 0, cv->owner, cv->perm, dp);
return 1;
case Qstatus:
mkqid(&q, QID(CONV(c->qid), Qstatus), 0, QTFILE);
devdir(c, q, "status", 0, cv->owner, 0444, dp);
return 1;
case Qwait:
mkqid(&q, QID(CONV(c->qid), Qwait), 0, QTFILE);
devdir(c, q, "wait", 0, cv->owner, 0444, dp);
return 1;
}
}
static Chan*
sdattach(char* spec)
{
Chan *c;
char *p;
SDev *sdev;
int idno, subno;
if(*spec == '\0'){
c = devattach(sddevtab.dc, spec);
mkqid(&c->qid, QID(0, 0, 0, Qtopdir), 0, QTDIR);
return c;
}
if(spec[0] != 's' || spec[1] != 'd')
error(Ebadspec);
idno = spec[2];
subno = strtol(&spec[3], &p, 0);
if(p == &spec[3])
error(Ebadspec);
if((sdev=sdgetdev(idno)) == nil)
error(Enonexist);
if(sdgetunit(sdev, subno) == nil){
decref(&sdev->r);
error(Enonexist);
}
c = devattach(sddevtab.dc, spec);
mkqid(&c->qid, QID(sdev->idno, subno, 0, Qunitdir), 0, QTDIR);
c->dev = (sdev->idno << UnitLOG) + subno;
decref(&sdev->r);
return c;
}
static int
sd2gen(Chan* c, int i, Dir* dp)
{
Qid q;
uvlong l;
SDpart *pp;
SDperm *perm;
SDunit *unit;
SDev *sdev;
int rv;
sdev = sdgetdev(DEV(c->qid));
assert(sdev);
unit = sdev->unit[UNIT(c->qid)];
rv = -1;
switch(i){
case Qctl:
mkqid(&q, QID(DEV(c->qid), UNIT(c->qid), PART(c->qid), Qctl),
unit->vers, QTFILE);
perm = &unit->ctlperm;
if(emptystr(perm->user)){
kstrdup(&perm->user, eve);
perm->perm = 0644; /* nothing secret in ctl */
}
devdir(c, q, "ctl", 0, perm->user, perm->perm, dp);
rv = 1;
break;
case Qraw:
mkqid(&q, QID(DEV(c->qid), UNIT(c->qid), PART(c->qid), Qraw),
unit->vers, QTFILE);
perm = &unit->rawperm;
if(emptystr(perm->user)){
kstrdup(&perm->user, eve);
perm->perm = DMEXCL|0600;
}
devdir(c, q, "raw", 0, perm->user, perm->perm, dp);
rv = 1;
break;
case Qpart:
pp = &unit->part[PART(c->qid)];
l = (pp->end - pp->start) * unit->secsize;
mkqid(&q, QID(DEV(c->qid), UNIT(c->qid), PART(c->qid), Qpart),
unit->vers+pp->vers, QTFILE);
if(emptystr(pp->user))
kstrdup(&pp->user, eve);
devdir(c, q, pp->name, l, pp->user, pp->perm, dp);
rv = 1;
break;
}
decref(&sdev->r);
return rv;
}
int
Fsproto(Fs *f, Proto *p)
{
if(f->np >= Maxproto)
return -1;
p->f = f;
if(p->ipproto > 0){
if(f->t2p[p->ipproto] != nil)
return -1;
f->t2p[p->ipproto] = p;
}
p->qid.type = QTDIR;
p->qid.path = QID(f->np, 0, Qprotodir);
p->conv = malloc(sizeof(Conv*)*(p->nc+1));
if(p->conv == nil)
panic("Fsproto");
p->x = f->np;
f->p[f->np++] = p;
return 0;
}
static int
ip2gen(Chan *c, int i, Dir *dp)
{
Qid q;
switch(i) {
case Qclone:
mkqid(&q, QID(PROTO(c->qid), 0, Qclone), 0, QTFILE);
devdir(c, q, "clone", 0, network, 0666, dp);
return 1;
case Qstats:
mkqid(&q, QID(PROTO(c->qid), 0, Qstats), 0, QTFILE);
devdir(c, q, "stats", 0, network, 0444, dp);
return 1;
}
return -1;
}
static Chan *
cmdattach(char *spec)
{
Chan *c;
if(cmd.conv == nil)
error(Enomem);
c = devattach('C', spec);
mkqid(&c->qid, QID(0, Qtopdir), 0, QTDIR);
return c;
}
Chan *
ipattach(char *spec)
{
Chan *c;
c = devattach('I', spec);
c->qid.path = QID(0, 0, Qtopdir);
c->qid.type = QTDIR;
c->qid.vers = 0;
return c;
}
static int
pcmgen(Chan *c, char*, Dirtab *, int , int i, Dir *dp)
{
int slotno;
Qid qid;
long len;
PCMslot *pp;
if(i == DEVDOTDOT){
mkqid(&qid, Qdir, 0, QTDIR);
devdir(c, qid, "#y", 0, eve, 0555, dp);
return 1;
}
if(i >= Nents*nslot)
return -1;
slotno = i/Nents;
pp = slot + slotno;
len = 0;
switch(i%Nents){
case 0:
qid.path = QID(slotno, Qmem);
snprint(up->genbuf, sizeof up->genbuf, "pcm%dmem", slotno);
len = pp->memlen;
break;
case 1:
qid.path = QID(slotno, Qattr);
snprint(up->genbuf, sizeof up->genbuf, "pcm%dattr", slotno);
len = pp->memlen;
break;
case 2:
qid.path = QID(slotno, Qctl);
snprint(up->genbuf, sizeof up->genbuf, "pcm%dctl", slotno);
break;
}
qid.vers = 0;
qid.type = QTFILE;
devdir(c, qid, up->genbuf, len, eve, 0660, dp);
return 1;
}
static int
sd1gen(Chan* c, int i, Dir* dp)
{
Qid q;
switch(i){
case Qtopctl:
mkqid(&q, QID(0, 0, 0, Qtopctl), 0, QTFILE);
devdir(c, q, "sdctl", 0, eve, 0644, dp); /* no secrets */
return 1;
}
return -1;
}
static int
flashgen(Chan *c, char*, Dirtab*, int, int s, Dir *dp)
{
Qid q;
char *n;
if(s == DEVDOTDOT){
mkqid(&q, QID(0, Qtopdir), 0, QTDIR);
n = "#F";
if(c->dev != 0){
snprint(up->genbuf, sizeof up->genbuf, "#F%ld", c->dev);
n = up->genbuf;
}
devdir(c, q, n, 0, eve, 0555, dp);
return 1;
}
switch(TYPE(c->qid.path)){
case Qtopdir:
if(s != 0)
break;
mkqid(&q, QID(0, Qflashdir), 0, QTDIR);
n = "flash";
if(c->dev != 0){
snprint(up->genbuf, sizeof up->genbuf, "flash%ld",
c->dev);
n = up->genbuf;
}
devdir(c, q, n, 0, eve, 0555, dp);
return 1;
case Qflashdir:
if(s >= 2*nelem(flash.card[c->dev]->part))
return -1;
return flash2gen(c, QID(s>>1, s&1?Qctl:Qdata), dp);
case Qctl:
case Qdata:
return flash2gen(c, (ulong)c->qid.path, dp);
}
return -1;
}
Chan *
ipattach(char *spec)
{
Chan *c;
if(atoi(spec) != 0)
error("bad specification");
c = devattach('I', spec);
mkqid(&c->qid, QID(0, 0, Qtopdir), 0, QTDIR);
c->dev = 0;
return c;
}
void
ixp_srv_walkandclone(Ixp9Req *req, IxpLookupFn lookup) {
IxpFileId *file, *tfile;
int i;
file = ixp_srv_clonefiles(req->fid->aux);
for(i=0; i < req->ifcall.twalk.nwname; i++) {
if(!strcmp(req->ifcall.twalk.wname[i], "..")) {
if(file->next) {
tfile = file;
file = file->next;
ixp_srv_freefile(tfile);
}
}else{
tfile = lookup(file, req->ifcall.twalk.wname[i]);
if(!tfile)
break;
assert(!tfile->next);
if(strcmp(req->ifcall.twalk.wname[i], ".")) {
tfile->next = file;
file = tfile;
}
}
req->ofcall.rwalk.wqid[i].type = file->tab.qtype;
req->ofcall.rwalk.wqid[i].path = QID(file->tab.type, file->id);
}
/* There should be a way to do this on freefid() */
if(i < req->ifcall.twalk.nwname) {
while((tfile = file)) {
file=file->next;
ixp_srv_freefile(tfile);
}
ixp_respond(req, Enofile);
return;
}
/* Remove refs for req->fid if no new fid */
if(req->ifcall.hdr.fid == req->ifcall.twalk.newfid) {
tfile = req->fid->aux;
req->fid->aux = file;
while((file = tfile)) {
tfile = tfile->next;
ixp_srv_freefile(file);
}
}else
req->newfid->aux = file;
req->ofcall.rwalk.nwqid = i;
ixp_respond(req, nil);
}
static int
unitgen(Chan *c, ulong type, Dir *dp)
{
int perm, t;
ulong vers;
vlong size;
char *p;
Aoedev *d;
Qid q;
d = unit2dev(UNIT(c->qid));
perm = 0644;
size = 0;
vers = d->vers;
t = QTFILE;
switch(type){
default:
return -1;
case Qctl:
p = "ctl";
break;
case Qdata:
p = "data";
perm = 0640;
if(UP(d))
size = d->bsize;
break;
case Qconfig:
p = "config";
if(UP(d))
size = d->nconfig;
break;
case Qident:
p = "ident";
if(UP(d))
size = sizeof d->ident;
break;
case Qdevlinkdir:
p = "devlink";
t = QTDIR;
perm = 0555;
break;
}
mkqid(&q, QID(UNIT(c->qid), type), vers, t);
devdir(c, q, p, size, eve, perm, dp);
return 1;
}
static int
ip1gen(Chan *c, int i, Dir *dp)
{
Qid q;
char *p;
int prot;
int len = 0;
Fs *f;
extern ulong kerndate;
f = ipfs[c->dev];
prot = 0666;
mkqid(&q, QID(0, 0, i), 0, QTFILE);
switch(i) {
default:
return -1;
case Qarp:
p = "arp";
prot = 0664;
break;
case Qbootp:
p = "bootp";
break;
case Qndb:
p = "ndb";
len = strlen(f->ndb);
q.vers = f->ndbvers;
break;
case Qiproute:
p = "iproute";
prot = 0664;
break;
case Qipselftab:
p = "ipselftab";
prot = 0444;
break;
case Qlog:
p = "log";
break;
}
devdir(c, q, p, len, network, prot, dp);
if(i == Qndb && f->ndbmtime > kerndate)
dp->mtime = f->ndbmtime;
return 1;
}
static int
ip3gen(Chan *c, int i, Dir *dp)
{
Qid q;
Conv *cv;
char *p;
cv = ipfs[c->dev]->p[PROTO(c->qid)]->conv[CONV(c->qid)];
if(cv->owner == nil)
kstrdup(&cv->owner, eve);
mkqid(&q, QID(PROTO(c->qid), CONV(c->qid), i), 0, QTFILE);
switch(i) {
default:
return -1;
case Qctl:
devdir(c, q, "ctl", 0, cv->owner, cv->perm, dp);
return 1;
case Qdata:
devdir(c, q, "data", qlen(cv->rq), cv->owner, cv->perm, dp);
return 1;
case Qerr:
devdir(c, q, "err", qlen(cv->eq), cv->owner, cv->perm, dp);
return 1;
case Qlisten:
devdir(c, q, "listen", 0, cv->owner, cv->perm, dp);
return 1;
case Qlocal:
p = "local";
break;
case Qremote:
p = "remote";
break;
case Qsnoop:
if(strcmp(cv->p->name, "ipifc") != 0)
return -1;
devdir(c, q, "snoop", qlen(cv->sq), cv->owner, 0400, dp);
return 1;
case Qstatus:
p = "status";
break;
}
devdir(c, q, p, 0, cv->owner, 0444, dp);
return 1;
}
int
dostat(int id, Dirtab *dir, uint8_t *buf, int nbuf, uint clock)
{
Dir d;
d.qid.path = QID(id, dir->qid);
d.qid.vers = 0;
d.qid.type = dir->type;
d.mode = dir->perm;
d.length = 0; /* would be nice to do better */
d.name = dir->name;
d.uid = user;
d.gid = user;
d.muid = user;
d.atime = clock;
d.mtime = clock;
return convD2M(&d, buf, nbuf);
}
static int
efilegen(Chan *c, SDunit *unit, int i, Dir *dp)
{
Qid q;
SDfile *e;
i -= SDnpart;
if(unit->nefile == 0 || i >= unit->nefile)
return -1;
if(i < 0)
return 0;
e = unit->efile + i;
if(emptystr(e->user))
kstrdup(&e->user, eve);
mkqid(&q, QID(DEV(c->qid), UNIT(c->qid), i, Qextra),
unit->vers, QTFILE);
devdir(c, q, e->name, 0, e->user, e->perm, dp);
return 1;
}
static Chan*
ipattach(char* spec)
{
Chan *c;
int dev;
dev = atoi(spec);
if(dev >= Nfs)
error("bad specification");
ipgetfs(dev);
c = devattach('I', spec);
mkqid(&c->qid, QID(0, 0, Qtopdir), 0, QTDIR);
c->dev = dev;
c->aux = newipaux(commonuser(), "none");
return c;
}
static
int
dostat(Filsys *fs, int id, Dirtab *dir, uint8_t *buf, int nbuf, uint clock)
{
Dir d;
d.qid.path = QID(id, dir->qid);
if(dir->qid == Qsnarf)
d.qid.vers = snarfversion;
else
d.qid.vers = 0;
d.qid.type = dir->type;
d.mode = dir->perm;
d.length = 0; /* would be nice to do better */
d.name = dir->name;
d.uid = fs->user;
d.gid = fs->user;
d.muid = fs->user;
d.atime = clock;
d.mtime = clock;
return convD2M(&d, buf, nbuf);
}
static int
sd1gen(Chan* c, int i, Dir* dp)
{
Qid q;
SDperm *p;
switch(i){
case Qtopctl:
mkqid(&q, QID(0, 0, 0, Qtopctl), 0, QTFILE);
qlock(&topctlunit.ctl);
p = &topctlunit.ctlperm;
if(p->user == nil || p->user[0] == 0){
kstrdup(&p->name, "sdctl");
kstrdup(&p->user, eve);
p->perm = 0640;
}
devdir(c, q, p->name, 0, p->user, p->perm, dp);
qunlock(&topctlunit.ctl);
return 1;
}
return -1;
}
static void
progclose(Chan *c)
{
int i;
Prog *f;
Osenv *o;
Progctl *ctl;
switch(QID(c->qid)) {
case Qns:
case Qheap:
free(c->aux);
break;
case Qdbgctl:
if((c->flag & COPEN) == 0)
return;
ctl = c->aux;
acquire();
closedbgctl(ctl, progpid(PID(c->qid)));
release();
break;
case Qwait:
acquire();
i = 0;
for(;;) {
f = progn(i++);
if(f == nil)
break;
o = f->osenv;
if(o->waitq == c->aux)
o->waitq = nil;
if(o->childq == c->aux)
o->childq = nil;
}
release();
qfree(c->aux);
}
}
static void
newproto(char *name, int type, int maxconv)
{
int l;
Proto *p;
if(np >= MAXPROTO) {
print("no %s: increase MAXPROTO", name);
return;
}
p = &proto[np];
strcpy(p->name, name);
p->stype = type;
p->qid.path = QID(np, 0, Qprotodir);
p->qid.type = QTDIR;
p->x = np++;
p->maxconv = maxconv;
l = sizeof(Conv*)*(p->maxconv+1);
p->conv = mallocz(l, 1);
if(p->conv == 0)
panic("no memory");
}
static
Xfid*
fsysread(Xfid *x, Fid *f)
{
Fcall t;
uint8_t *b;
int i, id, n, o, e, j, k, *ids, nids;
Dirtab *d, dt;
Column *c;
uint clock, len;
char buf[16];
if(f->qid.type & QTDIR) {
if(FILE(f->qid) == Qacme) { /* empty dir */
t.data = nil;
t.count = 0;
respond(x, &t, nil);
return x;
}
o = x->offset;
e = x->offset+x->count;
clock = getclock();
b = emalloc(messagesize);
id = WIN(f->qid);
n = 0;
if(id > 0)
d = dirtabw;
else
d = dirtab;
d++; /* first entry is '.' */
for(i=0; d->name!=nil && i<e; i+=len) {
len = dostat(WIN(x->f->qid), d, b+n, x->count-n, clock);
if(len <= BIT16SZ)
break;
if(i >= o)
n += len;
d++;
}
if(id == 0) {
qlock(&row);
nids = 0;
ids = nil;
for(j=0; j<row.ncol; j++) {
c = row.col[j];
for(k=0; k<c->nw; k++) {
ids = erealloc(ids, (nids+1)*sizeof(int));
ids[nids++] = c->w[k]->id;
}
}
qunlock(&row);
qsort(ids, nids, sizeof ids[0], idcmp);
j = 0;
dt.name = buf;
for(; j<nids && i<e; i+=len) {
k = ids[j];
sprint(dt.name, "%d", k);
dt.qid = QID(k, Qdir);
dt.type = QTDIR;
dt.perm = DMDIR|0700;
len = dostat(k, &dt, b+n, x->count-n, clock);
if(len == 0)
break;
if(i >= o)
n += len;
j++;
}
free(ids);
}
t.data = (char*)b;
t.count = n;
respond(x, &t, nil);
free(b);
return x;
}
sendp(x->c, xfidread);
return nil;
}
static
Xfid*
fsyswalk(Xfid *x, Fid *f)
{
Fcall t;
int c, i, j, id;
Qid q;
uint8_t type;
uint32_t path;
Fid *nf;
Dirtab *d, *dir;
Window *w;
char *err;
nf = nil;
w = nil;
if(f->open)
return respond(x, &t, "walk of open file");
if(x->fid != x->newfid) {
nf = newfid(x->newfid);
if(nf->busy)
return respond(x, &t, "newfid already in use");
nf->busy = TRUE;
nf->open = FALSE;
nf->mntdir = f->mntdir;
if(f->mntdir)
f->mntdir->ref++;
nf->dir = f->dir;
nf->qid = f->qid;
nf->w = f->w;
nf->nrpart = 0; /* not open, so must be zero */
if(nf->w)
incref(nf->w);
f = nf; /* walk f */
}
t.nwqid = 0;
err = nil;
dir = nil;
id = WIN(f->qid);
q = f->qid;
if(x->nwname > 0) {
for(i=0; i<x->nwname; i++) {
if((q.type & QTDIR) == 0) {
err = Enotdir;
break;
}
if(strcmp(x->wname[i], "..") == 0) {
type = QTDIR;
path = Qdir;
id = 0;
if(w) {
winclose(w);
w = nil;
}
Accept:
if(i == MAXWELEM) {
err = "name too long";
break;
}
q.type = type;
q.vers = 0;
q.path = QID(id, path);
t.wqid[t.nwqid++] = q;
continue;
}
/* is it a numeric name? */
for(j=0; (c=x->wname[i][j]); j++)
if(c<'0' || '9'<c)
goto Regular;
/* yes: it's a directory */
if(w) /* name has form 27/23; get out before losing w */
break;
id = atoi(x->wname[i]);
qlock(&row);
w = lookid(id, FALSE);
if(w == nil) {
qunlock(&row);
break;
}
incref(w); /* we'll drop reference at end if there's an error */
path = Qdir;
type = QTDIR;
qunlock(&row);
dir = dirtabw;
goto Accept;
Regular:
// if(FILE(f->qid) == Qacme) /* empty directory */
// break;
if(strcmp(x->wname[i], "new") == 0) {
if(w)
error("w set in walk to new");
sendp(cnewwindow, nil); /* signal newwindowthread */
w = recvp(cnewwindow); /* receive new window */
incref(w);
type = QTDIR;
path = QID(w->id, Qdir);
id = w->id;
dir = dirtabw;
goto Accept;
}
if(id == 0)
d = dirtab;
else
d = dirtabw;
d++; /* skip '.' */
for(; d->name; d++)
if(strcmp(x->wname[i], d->name) == 0) {
path = d->qid;
type = d->type;
dir = d;
goto Accept;
}
break; /* file not found */
}
if(i==0 && err == nil)
err = Eexist;
}
if(err!=nil || t.nwqid<x->nwname) {
if(nf) {
nf->busy = FALSE;
fsysdelid(nf->mntdir);
}
} else if(t.nwqid == x->nwname) {
if(w) {
f->w = w;
w = nil; /* don't drop the reference */
}
if(dir)
f->dir = dir;
f->qid = q;
}
if(w != nil)
winclose(w);
return respond(x, &t, err);
}
static int
loopbackgen(Chan *c, char*, Dirtab*, int, int i, Dir *dp)
{
Dirtab *tab;
int len, type;
Qid qid;
type = TYPE(c->qid.path);
if(i == DEVDOTDOT){
switch(type){
case Qtopdir:
case Qloopdir:
snprint(up->genbuf, sizeof(up->genbuf), "#X%ld", c->dev);
mkqid(&qid, QID(0, Qtopdir), 0, QTDIR);
devdir(c, qid, up->genbuf, 0, eve, 0555, dp);
break;
case Qportdir:
snprint(up->genbuf, sizeof(up->genbuf), "loopback%ld", c->dev);
mkqid(&qid, QID(0, Qloopdir), 0, QTDIR);
devdir(c, qid, up->genbuf, 0, eve, 0555, dp);
break;
default:
panic("loopbackgen %llux", c->qid.path);
}
return 1;
}
switch(type){
case Qtopdir:
if(i != 0)
return -1;
snprint(up->genbuf, sizeof(up->genbuf), "loopback%ld", c->dev);
mkqid(&qid, QID(0, Qloopdir), 0, QTDIR);
devdir(c, qid, up->genbuf, 0, eve, 0555, dp);
return 1;
case Qloopdir:
if(i >= 2)
return -1;
snprint(up->genbuf, sizeof(up->genbuf), "%d", i);
mkqid(&qid, QID(i, QID(0, Qportdir)), 0, QTDIR);
devdir(c, qid, up->genbuf, 0, eve, 0555, dp);
return 1;
case Qportdir:
if(i >= nelem(loopportdir))
return -1;
tab = &loopportdir[i];
mkqid(&qid, QID(ID(c->qid.path), tab->qid.path), 0, QTFILE);
devdir(c, qid, tab->name, tab->length, eve, tab->perm, dp);
return 1;
default:
/* non directory entries end up here; must be in lowest level */
if(c->qid.type & QTDIR)
panic("loopbackgen: unexpected directory");
if(i != 0)
return -1;
tab = &loopdirs[type];
if(tab == nil)
panic("loopbackgen: unknown type: %d", type);
len = tab->length;
devdir(c, c->qid, tab->name, len, eve, tab->perm, dp);
return 1;
}
}
static Chan*
loopbackattach(char *spec)
{
Loop *volatile lb;
Queue *q;
Chan *c;
int chan;
int dev;
dev = 0;
if(spec != nil){
dev = atoi(spec);
if(dev >= Nloopbacks)
error(Ebadspec);
}
c = devattach('X', spec);
if(waserror()){
chanfree(c);
nexterror();
}
lb = &loopbacks[dev];
qlock(lb);
if(waserror()){
lb->ref--;
qunlock(lb);
nexterror();
}
lb->ref++;
if(lb->ref == 1){
for(chan = 0; chan < 2; chan++){
lb->link[chan].ci.mode = Trelative;
lb->link[chan].ci.a = &lb->link[chan];
lb->link[chan].ci.f = linkintr;
lb->link[chan].limit = Loopqlim;
q = qopen(lb->link[chan].limit, 0, 0, 0);
lb->link[chan].iq = q;
if(q == nil){
freelb(lb);
exhausted("memory");
}
q = qopen(lb->link[chan].limit, 0, 0, 0);
lb->link[chan].oq = q;
if(q == nil){
freelb(lb);
exhausted("memory");
}
lb->link[chan].indrop = 1;
lb->link[chan].delaynns = Delayn;
lb->link[chan].delay0ns = Delay0;
}
}
poperror();
qunlock(lb);
poperror();
mkqid(&c->qid, QID(0, Qtopdir), 0, QTDIR);
c->aux = lb;
c->dev = dev;
return c;
}
static int
aoegen(Chan *c, char *, Dirtab *, int, int s, Dir *dp)
{
int i;
Aoedev *d;
Qid q;
if(c->qid.path == 0){
switch(s){
case DEVDOTDOT:
q.path = 0;
q.type = QTDIR;
devdir(c, q, "#æ", 0, eve, 0555, dp);
break;
case 0:
q.path = Qtopdir;
q.type = QTDIR;
devdir(c, q, "aoe", 0, eve, 0555, dp);
break;
default:
return -1;
}
return 1;
}
switch(TYPE(c->qid)){
default:
return -1;
case Qtopdir:
if(s == DEVDOTDOT){
mkqid(&q, Qzero, 0, QTDIR);
devdir(c, q, "aoe", 0, eve, 0555, dp);
return 1;
}
if(s < Qtopfiles)
return topgen(c, Qtopbase + s, dp);
s -= Qtopfiles;
if(s >= units.ref)
return -1;
mkqid(&q, QID(s, Qunitdir), 0, QTDIR);
d = unit2dev(s);
assert(d != nil);
devdir(c, q, unitname(d), 0, eve, 0555, dp);
return 1;
case Qtopctl:
case Qtoplog:
return topgen(c, TYPE(c->qid), dp);
case Qunitdir:
if(s == DEVDOTDOT){
mkqid(&q, QID(0, Qtopdir), 0, QTDIR);
uprint("%uld", UNIT(c->qid));
devdir(c, q, up->genbuf, 0, eve, 0555, dp);
return 1;
}
return unitgen(c, Qunitbase+s, dp);
case Qctl:
case Qdata:
case Qconfig:
case Qident:
return unitgen(c, TYPE(c->qid), dp);
case Qdevlinkdir:
i = UNIT(c->qid);
if(s == DEVDOTDOT){
mkqid(&q, QID(i, Qunitdir), 0, QTDIR);
devdir(c, q, "devlink", 0, eve, 0555, dp);
return 1;
}
if(i >= units.ref)
return -1;
d = unit2dev(i);
if(s >= d->ndl)
return -1;
uprint("%d", s);
mkqid(&q, Q3(s, i, Qdevlink), 0, QTFILE);
devdir(c, q, up->genbuf, 0, eve, 0755, dp);
return 1;
case Qdevlink:
uprint("%d", s);
mkqid(&q, Q3(s, UNIT(c->qid), Qdevlink), 0, QTFILE);
devdir(c, q, up->genbuf, 0, eve, 0755, dp);
return 1;
}
}
int
devsfgen(Chan *c, char *name, Dirtab *tab, int x, int s, Dir *dp)
{
int t;
Qid q;
ulong path;
Engine *E = (Engine *)c->aux;
USED(name);
USED(tab);
USED(x);
q.vers = 0;
if (s == DEVDOTDOT)
{
switch(QID(c->qid))
{
case Qtopdir:
case Qmroot:
mkqid(&q, Qtopdir, 0, QTDIR);
devdir(c, q, "#j", 0, eve, 0500, dp);
break;
case Qdir:
mkqid(&q, Qmroot, 0, QTDIR);
devdir(c, q, up->genbuf, 0, eve, 0500, dp);
break;
default:
panic("devsunflowerwalk %llux", c->qid.path);
return -1;
}
return 1;
}
/* Top level directory (say, /dev) */
t = QID(c->qid);
if (t == Qtopdir)
{
snprint(mname, MAX_MNAME, "sunflower.%s", E->attachspec);
switch(s)
{
case 0:
mkqid(&q, Qmroot, 0, QTDIR);
devdir(c, q, mname, 0, eve, 0555, dp);
break;
default:
return -1;
}
return 1;
}
/* Second level (say /dev/sunflower) */
if (t == Qmroot || t == Qmctl || t == Qminfo || t == Qnetin || t == Qnetout)
{
switch (s)
{
case 0:
mkqid(&q, Qmctl, 0, QTFILE);
devdir(c, q, "ctl", 0, eve, 0200, dp);
break;
case 1:
mkqid(&q, Qminfo, 0, QTFILE);
devdir(c, q, "info", 0, eve, 0400, dp);
break;
case 2:
mkqid(&q, Qnetin, 0, QTFILE);
devdir(c, q, "netin", 0, eve, 0222, dp);
break;
case 3:
mkqid(&q, Qnetout, 0, QTFILE);
devdir(c, q, "netout", 0, eve, 0444, dp);
break;
default:
if (s <= 2*E->nnodes+3)
{
int n = s-4;
int id = n >> 1;
if (n & 1)
{
sprint(up->genbuf, "%d.%d",
(E->sp[id])->NODE_ID,
(E->sp[id])->runnable);
}
else
{
sprint(up->genbuf, "%d", (E->sp[id])->NODE_ID);
}
mkqid(&q, (id << QSHIFT)|Qdir, 0, QTDIR);
devdir(c, q, up->genbuf, 0, eve, 0555, dp);
return 1;
}
else
{
return -1;
}
}
static int
cmdgen(Chan *c, char *name, Dirtab *d, int nd, int s, Dir *dp)
{
Qid q;
Conv *cv;
USED(name);
USED(nd);
USED(d);
if(s == DEVDOTDOT){
switch(TYPE(c->qid)){
case Qtopdir:
case Qcmd:
mkqid(&q, QID(0, Qtopdir), 0, QTDIR);
devdir(c, q, "#C", 0, eve, DMDIR|0555, dp);
break;
case Qconvdir:
mkqid(&q, QID(0, Qcmd), 0, QTDIR);
devdir(c, q, "cmd", 0, eve, DMDIR|0555, dp);
break;
default:
panic("cmdgen %llux", c->qid.path);
}
return 1;
}
switch(TYPE(c->qid)) {
case Qtopdir:
if(s >= 1)
return -1;
mkqid(&q, QID(0, Qcmd), 0, QTDIR);
devdir(c, q, "cmd", 0, "cmd", DMDIR|0555, dp);
return 1;
case Qcmd:
if(s < cmd.nc) {
cv = cmd.conv[s];
mkqid(&q, QID(s, Qconvdir), 0, QTDIR);
sprint(up->genbuf, "%d", s);
devdir(c, q, up->genbuf, 0, cv->owner, DMDIR|0555, dp);
return 1;
}
s -= cmd.nc;
if(s == 0){
mkqid(&q, QID(0, Qclonus), 0, QTFILE);
devdir(c, q, "clone", 0, "cmd", 0666, dp);
return 1;
}
return -1;
case Qclonus:
if(s == 0){
mkqid(&q, QID(0, Qclonus), 0, QTFILE);
devdir(c, q, "clone", 0, "cmd", 0666, dp);
return 1;
}
return -1;
case Qconvdir:
return cmd3gen(c, Qconvbase+s, dp);
case Qdata:
case Qstderr:
case Qctl:
case Qstatus:
case Qwait:
return cmd3gen(c, TYPE(c->qid), dp);
}
return -1;
}