From 95c85f17d11a33f297a4761c73095deef48f928d Mon Sep 17 00:00:00 2001
From: tedu <tedu@openbsd.org>
Date: Mon, 28 Aug 2017 16:16:58 +0000
Subject: add -z and -Z options to auto suspend or hibernate when low on
 battery. from Jesper Wallin

---
 usr.sbin/apmd/apmd.8 | 20 ++++++++++++++++++--
 usr.sbin/apmd/apmd.c | 43 +++++++++++++++++++++++++++++++++++++++----
 2 files changed, 57 insertions(+), 6 deletions(-)

diff --git a/usr.sbin/apmd/apmd.8 b/usr.sbin/apmd/apmd.8
index 6b047d2fc25..d171bcf93f6 100644
--- a/usr.sbin/apmd/apmd.8
+++ b/usr.sbin/apmd/apmd.8
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: apmd.8,v 1.47 2015/02/12 14:03:49 schwarze Exp $
+.\"	$OpenBSD: apmd.8,v 1.48 2017/08/28 16:16:58 tedu Exp $
 .\"
 .\" Copyright (c) 1995 John T. Kohl
 .\" All rights reserved.
@@ -26,7 +26,7 @@
 .\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: February 12 2015 $
+.Dd $Mdocdate: August 28 2017 $
 .Dt APMD 8
 .Os
 .Sh NAME
@@ -38,6 +38,8 @@
 .Op Fl f Ar devname
 .Op Fl S Ar sockname
 .Op Fl t Ar seconds
+.Op Fl Z Ar percent
+.Op Fl z Ar percent
 .Sh DESCRIPTION
 .Nm
 monitors the advanced power management device,
@@ -113,6 +115,20 @@ The polling rate defaults to
 once per 10 minutes, but may be specified using the
 .Fl t
 command-line flag.
+.It Fl Z Ar percent
+Automatically hibernate the system if no AC is connected and the
+estimated battery life is equal or below
+.Ar percent .
+.It Fl z Ar percent
+Automatically suspend the system if no AC is connected and the
+estimated battery life is equal or below
+.Ar percent .
+.Pp
+If both 
+.Fl Z
+and
+.Fl z
+are specified, the last one will supersede the other.
 .El
 .Pp
 When a client requests a suspend or stand-by state,
diff --git a/usr.sbin/apmd/apmd.c b/usr.sbin/apmd/apmd.c
index 666ae0d0d29..549f641cad6 100644
--- a/usr.sbin/apmd/apmd.c
+++ b/usr.sbin/apmd/apmd.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: apmd.c,v 1.79 2015/11/16 17:35:05 tedu Exp $	*/
+/*	$OpenBSD: apmd.c,v 1.80 2017/08/28 16:16:58 tedu Exp $	*/
 
 /*
  *  Copyright (c) 1995, 1996 John T. Kohl
@@ -56,6 +56,9 @@
 #define TRUE 1
 #define FALSE 0
 
+#define AUTO_SUSPEND 1
+#define AUTO_HIBERNATE 2
+
 const char apmdev[] = _PATH_APM_CTLDEV;
 const char sockfile[] = _PATH_APM_SOCKET;
 
@@ -94,8 +97,8 @@ void
 usage(void)
 {
 	fprintf(stderr,
-	    "usage: %s [-AadHLs] [-f devname] [-S sockname] [-t seconds]\n",
-	    __progname);
+	    "usage: %s [-AadHLs] [-f devname] [-S sockname] [-t seconds] "
+		"[-Z percent] [-z percent]\n", __progname);
 	exit(1);
 }
 
@@ -348,6 +351,8 @@ main(int argc, char *argv[])
 {
 	const char *fname = apmdev;
 	int ctl_fd, sock_fd, ch, suspends, standbys, hibernates, resumes;
+	int autoaction = 0;
+	int autolimit = 0;
 	int statonly = 0;
 	int powerstatus = 0, powerbak = 0, powerchange = 0;
 	int noacsleep = 0;
@@ -355,13 +360,14 @@ main(int argc, char *argv[])
 	struct apm_power_info pinfo;
 	time_t apmtimeout = 0;
 	const char *sockname = sockfile;
+	const char *errstr;
 	int kq, nchanges;
 	struct kevent ev[2];
 	int ncpu_mib[2] = { CTL_HW, HW_NCPU };
 	int ncpu;
 	size_t ncpu_sz = sizeof(ncpu);
 
-	while ((ch = getopt(argc, argv, "aACdHLsf:t:S:")) != -1)
+	while ((ch = getopt(argc, argv, "aACdHLsf:t:S:z:Z:")) != -1)
 		switch(ch) {
 		case 'a':
 			noacsleep = 1;
@@ -402,6 +408,20 @@ main(int argc, char *argv[])
 			doperf = PERF_MANUAL;
 			setperfpolicy("high");
 			break;
+		case 'Z':
+			autoaction = AUTO_HIBERNATE;
+			autolimit = strtonum(optarg, 1, 100, &errstr);
+			if (errstr != NULL)
+				errc(1, EINVAL, "%s percentage: %s", errstr,
+				    optarg);
+			break;
+		case 'z':
+			autoaction = AUTO_SUSPEND;
+			autolimit = strtonum(optarg, 1, 100, &errstr);
+			if (errstr != NULL)
+				errc(1, EINVAL, "%s percentage: %s", errstr,
+				    optarg);
+			break;
 		case '?':
 		default:
 			usage();
@@ -480,6 +500,21 @@ main(int argc, char *argv[])
 				powerstatus = powerbak;
 				powerchange = 1;
 			}
+
+			if (!powerstatus && autoaction &&
+			    autolimit > (int)pinfo.battery_life) {
+				syslog(LOG_NOTICE,
+				    "estimated battery life %d%%, "
+				    "autoaction limit set to %d%% .",
+				    pinfo.battery_life,
+				    autolimit
+				);
+
+				if (autoaction == AUTO_SUSPEND)
+					suspend(ctl_fd);
+				else
+					hibernate(ctl_fd);
+			}
 		}
 
 		if (!rv)
-- 
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