diff --git a/NEWS b/NEWS
index 185126f644..c1770565e9 100644
--- a/NEWS
+++ b/NEWS
@@ -698,7 +698,8 @@ CHANGES WITH 254 in spe:
charge level of the system. In case the charge level is very low the
user is notified (graphically via Plymouth – if available – as well
as in text form on the console), and the system is turned off after a
- 10s delay.
+ 10s delay. The feature can be disabled by passing
+ systemd.battery-check=0 through the kernel command line.
* The 'passwdqc' library is now supported as an alternative to the
'pwquality' library and it can be selected at build time.
diff --git a/man/systemd-battery-check.service.xml b/man/systemd-battery-check.service.xml
index 2d9005696e..6f1b0ea687 100644
--- a/man/systemd-battery-check.service.xml
+++ b/man/systemd-battery-check.service.xml
@@ -62,6 +62,26 @@
+
+ Kernel Command Line
+
+ The following variables are understood:
+
+
+
+ systemd.battery-check=BOOL
+
+
+ Takes a boolean. If specified with false, systemd-battery-check command
+ will return immediately with exit status 0 without checking battery capacity and AC power
+ existence, and the service systemd-battery-check.service will succeed. This
+ may be useful when the command wrongly detects and reports battery capacity percentage or AC power
+ existence, or when you want to boot the system forcibly.
+
+
+
+
+
See Also
diff --git a/src/battery-check/battery-check.c b/src/battery-check/battery-check.c
index ca13251ae0..c3091d3474 100644
--- a/src/battery-check/battery-check.c
+++ b/src/battery-check/battery-check.c
@@ -14,7 +14,9 @@
#include "io-util.h"
#include "log.h"
#include "main-func.h"
+#include "parse-util.h"
#include "pretty-print.h"
+#include "proc-cmdline.h"
#include "socket-util.h"
#include "terminal-util.h"
#include "time-util.h"
@@ -24,6 +26,8 @@
#define BATTERY_RESTORED_MESSAGE \
"A.C. power restored, continuing."
+static bool arg_doit = true;
+
static int help(void) {
_cleanup_free_ char *link = NULL;
int r;
@@ -84,6 +88,23 @@ static int plymouth_send_message(const char *mode, const char *message) {
return 0;
}
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
+ int r;
+
+ assert(key);
+
+ if (streq(key, "systemd.battery-check")) {
+
+ r = value ? parse_boolean(value) : 1;
+ if (r < 0)
+ log_warning_errno(r, "Failed to parse %s switch, ignoring: %s", key, value);
+ else
+ arg_doit = r;
+ }
+
+ return 0;
+}
+
static int parse_argv(int argc, char * argv[]) {
enum {
@@ -132,10 +153,19 @@ static int run(int argc, char *argv[]) {
log_setup();
+ r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX);
+ if (r < 0)
+ log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
+
r = parse_argv(argc, argv);
if (r <= 0)
return r;
+ if (!arg_doit) {
+ log_info("Checking battery status and AC power existence is disabled by the kernel command line, skipping execution.");
+ return 0;
+ }
+
r = battery_is_discharging_and_low();
if (r < 0) {
log_warning_errno(r, "Failed to check battery status, ignoring: %m");
diff --git a/units/systemd-battery-check.service.in b/units/systemd-battery-check.service.in
index 61f4ae16e0..a6a0d26fde 100644
--- a/units/systemd-battery-check.service.in
+++ b/units/systemd-battery-check.service.in
@@ -12,6 +12,7 @@ Description=Check battery level during early boot
Documentation=man:systemd-battery-check.service(8)
ConditionVirtualization=no
ConditionDirectoryNotEmpty=/sys/class/power_supply/
+ConditionKernelCommandLine=!systemd.battery-check=0
AssertPathExists=/etc/initrd-release
DefaultDependencies=no
After=plymouth-start.service