1991/0417/port/sysfile.c (diff list | history)

1991/0411/sys/src/9/port/sysfile.c:227,234 – 1991/0417/sys/src/9/port/sysfile.c:227,236 (short | long | prev | next)
Debugging: acquire both locks during read and write. rsc Fri Mar 4 17:11:43 2005
1990/1009		c = fdtochan(arg[0], OREAD);
1990/1004		validaddr(arg[1], arg[2], 1);
1991/0411		qlock(&c->rdl);
1991/0417		qlock(&c->wrl); /* BUG BUG BUG */
1990/0227		if(waserror()){
1991/0411		qunlock(&c->rdl);
1991/0417		qunlock(&c->wrl); /* BUG BUG BUG */
1990/0227		nexterror(); } n = arg[2];
1991/0411/sys/src/9/port/sysfile.c:243,248 – 1991/0417/sys/src/9/port/sysfile.c:245,251
1991/0411		n = (*devtab[c->type].read)(c, (void*)arg[1], n, c->offset);
1990/0227		c->offset += n;
1991/0411		qunlock(&c->rdl);
1991/0417		qunlock(&c->wrl); /* BUG BUG BUG */
1990/0227		return n; }
1991/0411/sys/src/9/port/sysfile.c:254,261 – 1991/0417/sys/src/9/port/sysfile.c:257,266
1990/0227
1990/1009		c = fdtochan(arg[0], OWRITE);
1990/0227		validaddr(arg[1], arg[2], 0);
1991/0417		qlock(&c->rdl); /* BUG BUG BUG */
1991/0411		qlock(&c->wrl);
1990/0227		if(waserror()){
1991/0417		qunlock(&c->rdl); /* BUG BUG BUG */
1991/0411		qunlock(&c->wrl);
1990/0227		nexterror(); }
1991/0411/sys/src/9/port/sysfile.c:263,268 – 1991/0417/sys/src/9/port/sysfile.c:268,274
1990/11211		error(Eisdir);
1991/0411		n = (*devtab[c->type].write)(c, (void*)arg[1], arg[2], c->offset);
1990/0227		c->offset += n;
1991/0417		qunlock(&c->rdl); /* BUG BUG BUG */
1991/0411		qunlock(&c->wrl);
1990/0227		return n; }