1991/0411/port/devproc.c (diff list | history)

1991/0318/sys/src/9/port/devproc.c:144,152 – 1991/0411/sys/src/9/port/devproc.c:144,152 (short | long | prev | next)
1990/0227		goto Close;
1990/11211		if(p->pid != PID(c->qid))
1990/0227		goto Close; qlock(tc);
1991/0411		qlock(&tc->rdl);
1990/0227		tc->offset = 0; qunlock(tc);
1991/0411		qunlock(&tc->rdl);
1990/0227		return tc; case Qctl: case Qnote:
1991/0318/sys/src/9/port/devproc.c:206,212 – 1991/0411/sys/src/9/port/devproc.c:206,212
1990/0227		} long procread(Chan *c, void *va, long n)
1991/0411		procread(Chan *c, void *va, long n, ulong offset)
1990/0227		{ char *a = va, *b; char statbuf[2*NAMELEN+12+6*12];
1991/0318/sys/src/9/port/devproc.c:236,244 – 1991/0411/sys/src/9/port/devproc.c:236,244
1990/0227		/* * One page at a time */ if(((c->offset+n)&~(BY2PG-1)) != (c->offset&~(BY2PG-1))) n = BY2PG - (c->offset&(BY2PG-1)); s = seg(p, c->offset);
1991/0411		if(((offset+n)&~(BY2PG-1)) != (offset&~(BY2PG-1))) n = BY2PG - (offset&(BY2PG-1)); s = seg(p, offset);
1990/0227		if(s){ o = s->o; if(o == 0)
1991/0318/sys/src/9/port/devproc.c:248,258 – 1991/0411/sys/src/9/port/devproc.c:248,258
1990/0227		unlock(o);
1990/11211		error(Eprocdied);
1990/0227		} if(seg(p, c->offset) != s){
1991/0411		if(seg(p, offset) != s){
1990/0227		unlock(o);
1990/11211		error(Egreg);
1990/0227		}
1990/0614		pte = &o->pte[(c->offset-o->va)>>PGSHIFT];
1991/0411		pte = &o->pte[(offset-o->va)>>PGSHIFT];
1990/0614		if(s->mod){ opte = pte; while(pte = pte->nextmod) /* assign = */
1991/0318/sys/src/9/port/devproc.c:264,298 – 1991/0411/sys/src/9/port/devproc.c:264,298
1990/0614		pg = pte->page;
1990/0227		unlock(o); if(pg == 0){
1990/0614		pprint("nonresident page addr %lux (complain to rob)\n", c->offset);
1991/0411		pprint("nonresident page addr %lux (complain to rob)\n", offset);
1990/0227		memset(a, 0, n); }else{
1990/0614		k = kmap(pg); b = (char*)VA(k);
1991/0318		memmove(a, b+(c->offset&(BY2PG-1)), n);
1991/0411		memmove(a, b+(offset&(BY2PG-1)), n);
1990/0614		kunmap(k);
1990/0227		} return n; } /* u area */
1990/1110		if(c->offset>=USERADDR && c->offset<USERADDR+BY2PG){
1990/0227		if(c->offset+n > USERADDR+BY2PG) n = USERADDR+BY2PG - c->offset;
1991/0411		if(offset>=USERADDR && offset<USERADDR+BY2PG){ if(offset+n > USERADDR+BY2PG) n = USERADDR+BY2PG - offset;
1990/0227		pg = p->upage;
1990/11211		if(pg==0 || p->pid!=PID(c->qid)) error(Eprocdied);
1990/0614		k = kmap(pg); b = (char*)VA(k);
1991/0318		memmove(a, b+(c->offset-USERADDR), n);
1991/0411		memmove(a, b+(offset-USERADDR), n);
1990/0614		kunmap(k);
1990/0227		return n; } /* kernel memory. BUG: shouldn't be so easygoing. BUG: mem mapping? */
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;
1991/0318		memmove(a, (char*)c->offset, n);
1991/0411		if(offset>=KZERO && offset<KZERO+conf.npage0*BY2PG){ if(offset+n > KZERO+conf.npage0*BY2PG) n = KZERO+conf.npage0*BY2PG - offset; memmove(a, (char*)offset, n);
1990/0914		return n;
1990/0227		} return 0;
1991/0318/sys/src/9/port/devproc.c:328,345 – 1991/0411/sys/src/9/port/devproc.c:328,345
1990/0227		return n; case Qproc: if(c->offset >= sizeof(Proc))
1991/0411		if(offset >= sizeof(Proc))
1990/0227		return 0; if(c->offset+n > sizeof(Proc)) n = sizeof(Proc) - c->offset;
1991/0318		memmove(a, ((char*)p)+c->offset, n);
1991/0411		if(offset+n > sizeof(Proc)) n = sizeof(Proc) - offset; memmove(a, ((char*)p)+offset, n);
1990/0227		return n; case Qstatus: if(c->offset >= sizeof statbuf)
1991/0411		if(offset >= sizeof statbuf)
1990/0227		return 0; if(c->offset+n > sizeof statbuf) n = sizeof statbuf - c->offset;
1991/0411		if(offset+n > sizeof statbuf) n = sizeof statbuf - offset;
1990/0227		sprint(statbuf, "%-27s %-27s %-11s ", p->text, p->pgrp->user, statename[p->state]); for(i=0; i<6; i++){ l = p->time[i];
1991/0318/sys/src/9/port/devproc.c:348,354 – 1991/0411/sys/src/9/port/devproc.c:348,354
1990/0614		l = TK2MS(l);
1990/0227		readnum(0, statbuf+2*NAMELEN+12+NUMSIZE*i, NUMSIZE, l, NUMSIZE); }
1991/0318		memmove(a, statbuf+c->offset, n);
1991/0411		memmove(a, statbuf+offset, n);
1990/0227		return n; }
1990/11211		error(Egreg);
1991/0318/sys/src/9/port/devproc.c:356,362 – 1991/0411/sys/src/9/port/devproc.c:356,362
1990/0227		long procwrite(Chan *c, void *va, long n)
1991/0411		procwrite(Chan *c, void *va, long n, ulong offset)
1990/0227		{ Proc *p;
1990/1110		Pgrp *pg;