Module Name:    src
Committed By:   christos
Date:           Mon Dec 21 19:54:35 UTC 2015

Modified Files:
        src/sys/arch/usermode/usermode: thunk.c

Log Message:
more checking


To generate a diff of this commit:
cvs rdiff -u -r1.85 -r1.86 src/sys/arch/usermode/usermode/thunk.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/sys/arch/usermode/usermode/thunk.c
diff -u src/sys/arch/usermode/usermode/thunk.c:1.85 src/sys/arch/usermode/usermode/thunk.c:1.86
--- src/sys/arch/usermode/usermode/thunk.c:1.85	Fri Feb  6 05:25:13 2015
+++ src/sys/arch/usermode/usermode/thunk.c	Mon Dec 21 14:54:35 2015
@@ -1,4 +1,4 @@
-/* $NetBSD: thunk.c,v 1.85 2015/02/06 10:25:13 prlw1 Exp $ */
+/* $NetBSD: thunk.c,v 1.86 2015/12/21 19:54:35 christos Exp $ */
 
 /*-
  * Copyright (c) 2011 Jared D. McNeill <jmcne...@invisible.ca>
@@ -28,7 +28,7 @@
 
 #include <sys/cdefs.h>
 #ifdef __NetBSD__
-__RCSID("$NetBSD: thunk.c,v 1.85 2015/02/06 10:25:13 prlw1 Exp $");
+__RCSID("$NetBSD: thunk.c,v 1.86 2015/12/21 19:54:35 christos Exp $");
 #endif
 
 #include <sys/types.h>
@@ -761,15 +761,19 @@ thunk_getcpuinfo(char *cp, size_t *len)
 
 	fd = open("/proc/cpuinfo", O_RDONLY);
 	if (fd == -1)
-		return -1;
-	rlen = read(fd, cp, *len - 1);
+		goto out;
+	rlen = read(fd, cp, *len);
 	close(fd);
 
 	if (rlen == -1)
-		return -1;
+		goto out;
 
+	buf[rlen ? rlen - 1 : 0] = '\0';
 	*len = rlen;
 	return 0;
+bad:
+	*len = 0;
+	return -1;
 }
 
 int

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