From 2b62ed8010d4e89dd3927008204f2e0aadb6bc01 Mon Sep 17 00:00:00 2001
From: Giacomo Tesio <giacomo@tesio.it>
Date: Tue, 21 Nov 2017 00:29:31 +0100
Subject: [PATCH] kern: keep reading /proc/n/syscall after process death, to
 get all messages

---
 sys/src/kern/port/devproc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sys/src/kern/port/devproc.c b/sys/src/kern/port/devproc.c
index a047f5d..cb1d129 100644
--- a/sys/src/kern/port/devproc.c
+++ b/sys/src/kern/port/devproc.c
@@ -826,6 +826,12 @@ procread(Chan *c, void *va, long n, int64_t off)
 		}
 		return rptr - (uint8_t*)va;
 	}
+	if(QID(c->qid) == Qsyscall && qcanread(c->aux)){
+		/* whatever the process status, the reader can read
+		 * pending syscall records
+		 */
+		return qread(c->aux, va, n);
+	}
 
 	if((p = psincref(SLOT(c->qid))) == nil)
 		error(Eprocdied);