3 files changed, 14 insertions(+), 3 deletions(-)

M pc/sdata.c
M port/devdup.c
M port/proc.c

@@ 1590,12 1590,14 @@ atapnp(void)
 	Pcidev *p;
 	int channel, ispc87415, pi, r;
 	SDev *legacy[2], *sdev, *head, *tail;
+//int i;
 
 	legacy[0] = legacy[1] = head = tail = nil;
 	if(sdev = ataprobe(0x1F0, 0x3F4, IrqATA0)){
 		head = tail = sdev;
 		legacy[0] = sdev;
 	}
+//print("probe 1, sdev %p\n", sdev);
 	if(sdev = ataprobe(0x170, 0x374, IrqATA1)){
 		if(head != nil)
 			tail->next = sdev;


@@ 1604,6 1606,7 @@ atapnp(void)
 		tail = sdev;
 		legacy[1] = sdev;
 	}
+//print("probe 2, sdev %p\n", sdev);
 
 	p = nil;
 	while(p = pcimatch(p, 0, 0)){


@@ 1663,6 1666,7 @@ atapnp(void)
 			 * Is this correct?
 			 */
 			pi |= 0x0f;
+//for(i = 0; i <= 4; i++) print("bar%d: addr %lux size %d\n", i, p->mem[i].bar, p->mem[i].size);
 			break;
 		case (0x0571<<16)|0x1106:	/* VIA 82C686 */
 		case (0x0211<<16)|0x1166:	/* ServerWorks IB6566 */

@@ 76,6 76,9 @@ dupopen(Chan *c, int omode)
 	if((twicefd & 1)){
 		/* ctl file */
 		f = c;
+		f->mode = openmode(omode);
+		f->flag |= COPEN;
+		f->offset = 0;
 	}else{
 		/* fd file */
 		fdtochan(fd, openmode(omode), 0, 0);	/* error check only */


@@ 120,7 123,12 @@ dupread(Chan *c, void *va, long n, vlong offset)
 static long
 dupwrite(Chan *c, void*, long, vlong)
 {
-	if(c->qid.path & 1){
+	int fd, twicefd;
+
+	twicefd = c->qid.path - 1;
+	fd = twicefd/2;
+	if(twicefd & 1){
+print("writing ctl file\n");
 		print("do ctl write\n");
 		return -1;
 	}

@@ 324,6 324,7 @@ newproc(void)
 	p->nchild = 0;
 	p->nwait = 0;
 	p->waitq = 0;
+	p->parent = 0;
 	p->pgrp = 0;
 	p->egrp = 0;
 	p->fgrp = 0;


@@ 1053,8 1054,6 @@ kproc(char *name, void (*func)(void *), void *arg)
 	p->pgrp = kpgrp;
 	incref(kpgrp);
 
-	p->nchild = 0;
-	p->parent = 0;
 	memset(p->time, 0, sizeof(p->time));
 	p->time[TReal] = MACHP(0)->ticks;
 	ready(p);