From: Karel Zak <kzak@redhat.com>
Date: Wed, 5 Oct 2016 09:11:45 +0000 (+0200)
Subject: rtcwake: make sure buffer is zero terminated [coverity scan]
X-Git-Tag: v2.29-rc2~23
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a325f3c2066f5790e3a611157deffa74d975f8df;p=thirdparty%2Futil-linux.git

rtcwake: make sure buffer is zero terminated [coverity scan]
---

diff --git a/sys-utils/rtcwake.c b/sys-utils/rtcwake.c
index f4e630a337..11f75ae9b0 100644
--- a/sys-utils/rtcwake.c
+++ b/sys-utils/rtcwake.c
@@ -250,7 +250,7 @@ static char **get_sys_power_states(struct rtcwake_control *ctl)
 		fd = open(SYS_POWER_STATE_PATH, O_RDONLY);
 		if (fd < 0)
 			goto nothing;
-		if (read(fd, &buf, sizeof buf) <= 0)
+		if (read(fd, &buf, sizeof(buf) - 1) <= 0)
 			goto nothing;
 		ctl->possible_modes = strv_split(buf, " \n");
 		close(fd);