1990/0614/port/devproc.c (diff list | history)

1990/0424/sys/src/9/port/devproc.c:147,161 – 1990/0614/sys/src/9/port/devproc.c:147,158 (short | long | prev | next)
1990/0227		case Qnote: break; case Qdir:
1990/0614		case Qmem:
1990/0227		case Qproc: case Qstatus:
1990/0424		if(omode!=OREAD) error(0, Eperm); break; case Qmem:
1990/0227		if(omode!=OREAD) error(0, Eperm); break; default: pprint("unknown qid in devopen\n"); error(0, Egreg);
1990/0424/sys/src/9/port/devproc.c:204,209 – 1990/0614/sys/src/9/port/devproc.c:201,208
1990/0227		Seg *s; Orig *o; Page *pg;
1990/0614		KMap *k; PTE *pte, *opte;
1990/0227		int i; long l; long pid;
1990/0424/sys/src/9/port/devproc.c:240,253 – 1990/0614/sys/src/9/port/devproc.c:239,263
1990/0227		unlock(o); error(0, Egreg); } pg = o->pte[(c->offset-o->va)>>PGSHIFT].page;
1990/0614		pte = &o->pte[(c->offset-o->va)>>PGSHIFT]; if(s->mod){ opte = pte; while(pte = pte->nextmod) /* assign = */ if(pte->proc == p) break; if(pte == 0) pte = opte; } pg = pte->page;
1990/0227		unlock(o); if(pg == 0){ pprint("nonresident page (complain to rob)\n");
1990/0614		pprint("nonresident page addr %lux (complain to rob)\n", c->offset);
1990/0227		memset(a, 0, n); }else{ b = (char*)(pg->pa|KZERO);
1990/0614		k = kmap(pg); b = (char*)VA(k);
1990/0227		memcpy(a, b+(c->offset&(BY2PG-1)), n);
1990/0614		kunmap(k);
1990/0227		} return n; }
1990/0424/sys/src/9/port/devproc.c:259,273 – 1990/0614/sys/src/9/port/devproc.c:269,285
1990/0227		pg = p->upage; if(pg==0 || (p->pid&PIDMASK)!=PID(c->qid)) error(0, Eprocdied); b = (char*)(pg->pa|KZERO);
1990/0614		k = kmap(pg); b = (char*)VA(k);
1990/0227		memcpy(a, b+(c->offset-USERADDR), n);
1990/0614		kunmap(k);
1990/0227		return n; } /* kernel memory. BUG: shouldn't be so easygoing. BUG: mem mapping? */ if(c->offset>=KZERO && c->offset<KZERO+conf.npage*BY2PG){ if(c->offset+n > KZERO+conf.npage*BY2PG) n = KZERO+conf.npage*BY2PG - c->offset;
1990/0614		if(c->offset>=KZERO && c->offset<KZERO+conf.npage0*BY2PG){ if(c->offset+n > KZERO+conf.npage0*BY2PG) n = KZERO+conf.npage0*BY2PG - c->offset;
1990/0227		memcpy(a, (char*)c->offset, n); return n; }
1990/0424/sys/src/9/port/devproc.c:282,289 – 1990/0614/sys/src/9/port/devproc.c:294,303
1990/0227		} if((p->pid&PIDMASK) != PID(c->qid)) error(0, Eprocdied); up = (User*)(p->upage->pa|KZERO);
1990/0614		k = kmap(p->upage); up = (User*)VA(k);
1990/0227		if(up->p != p){
1990/0614		kunmap(k);
1990/0227		pprint("note read u/p mismatch"); error(0, Egreg); }
1990/0424/sys/src/9/port/devproc.c:297,302 – 1990/0614/sys/src/9/port/devproc.c:311,317
1990/0227		memcpy(&up->note[0], &up->note[1], up->nnote*sizeof(Note)); n = ERRLEN; }
1990/0614		kunmap(k);
1990/0227		unlock(&p->debug); return n;
1990/0424/sys/src/9/port/devproc.c:318,324 – 1990/0614/sys/src/9/port/devproc.c:333,339
1990/0227		l = p->time[i]; if(i == TReal) l = MACHP(0)->ticks - l; l *= MS2HZ;
1990/0614		l = TK2MS(l);
1990/0227		readnum(0, statbuf+2*NAMELEN+12+NUMSIZE*i, NUMSIZE, l, NUMSIZE); } memcpy(a, statbuf+c->offset, n);
1990/0424/sys/src/9/port/devproc.c:333,338 – 1990/0614/sys/src/9/port/devproc.c:348,354
1990/0227		{ Proc *p; User *up;
1990/0614		KMap *k;
1990/0227		char buf[ERRLEN]; if(c->qid & CHDIR)
1990/0424/sys/src/9/port/devproc.c:355,365 – 1990/0614/sys/src/9/port/devproc.c:371,384
1990/0227		error(0, Ebadctl); break; case Qnote: up = (User*)(p->upage->pa|KZERO);
1990/0614		k = kmap(p->upage); up = (User*)VA(k);
1990/0227		if(up->p != p){
1990/0614		kunmap(k);
1990/0227		pprint("note write u/p mismatch"); error(0, Egreg); }
1990/0614		kunmap(k);
1990/0227		if(n >= ERRLEN-1) error(0, Etoobig); if(n>=4 && strncmp(va, "sys:", 4)==0)