kern: devproc: forbid open(OWRITE) of notes in Broken proceses

2017-12-15 00:34:19 +01:00 · 2017-12-15 00:34:19 +01:00 · 7f1ba356f1
parent c48d0e46ec
commit 7f1ba356f1
1 changed files with 2 additions and 0 deletions
--- a/sys/src/kern/port/devproc.c
+++ b/sys/src/kern/port/devproc.c
@ -403,6 +403,8 @@ procopen(Chan *c, unsigned long omode)
 	case Qnote:
 		if(p->privatemem)
 			error(Eperm);
+		if(p->state < Ready && omode != OREAD && omode != OSTAT)
+			error(Eperm);
 		break;

 	case Qmem: