From 784b6581d9478ce2cc73f47317350a596bb08cc3 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Wed, 26 Aug 2020 15:36:04 +0200
Subject: [busybox] Fix rtcwake patch, add timeout backwars compat patch

---
 core/modules/busybox/module.build         | 17 ++++++---
 core/modules/busybox/rtcwake-compat.patch | 59 +++++++++++++++----------------
 core/modules/busybox/timeout-compat.patch | 14 ++++++++
 3 files changed, 54 insertions(+), 36 deletions(-)
 create mode 100644 core/modules/busybox/timeout-compat.patch

(limited to 'core/modules/busybox')

diff --git a/core/modules/busybox/module.build b/core/modules/busybox/module.build
index fc4a28d0..9b83e1e7 100644
--- a/core/modules/busybox/module.build
+++ b/core/modules/busybox/module.build
@@ -5,15 +5,22 @@ fetch_source() {
 		git clone --depth 1 "${REQUIRED_GIT}" --branch "$REQUIRED_BRANCH" src || perror "Could not clone busybox git"
 	fi
 	cde src
-	git apply "${MODULE_DIR}/1_31_1-stime.patch" || perror "Could not apply stime patch for 1.31.1"
+	# Needed for newer glibc
+	if ! grep -q 'OPT_SET.*clock_settime.*CLOCK_REALTIME' "coreutils/date.c"; then
+		git apply "${MODULE_DIR}/1_31_1-stime.patch" || perror "Could not apply stime patch for 1.31.1"
+	fi
+	# Hack for backwards compat to old busybox which required -t (timeout -t [SECS] [PROG...])
+	if ! grep -q 'getopt32.*"t"' "coreutils/timeout.c"; then
+		git apply "${MODULE_DIR}/timeout-compat.patch" || perror "Could not apply timeout backwards compat patch"
+	fi
 	# Patch background filling if not patched yet
 	if ! grep -q "bfill_background" "miscutils/fbsplash.c"; then
 		git apply "${MODULE_DIR}/fbsplash-fillbg.patch" || perror "Could not apply busybox patch for fbsplash background filling"
 	fi
-	# TODO fix this patch
-	#if ! grep -q 'suspend.*"no"' "util-linux/rtcwake.c"; then
-	#	git apply "${MODULE_DIR}/rtcwake-compat.patch" || perror "Could not apply busybox patch for rtcwake compat with util-linux"
-	#fi
+	# Add support for just manipulating alarm, without any standby/hibernation
+	if ! grep -q 'suspend.*"no"' "util-linux/rtcwake.c"; then
+		git apply "${MODULE_DIR}/rtcwake-compat.patch" || perror "Could not apply busybox patch for rtcwake compat with util-linux"
+	fi
 	# make sure Makefile allows a preset CC
 	if [ -n "$CC" ]; then
 		sed -i -r 's/^CC\s*=\s*(\S)/CC ?= \1/' Makefile || perror "Could not patch Makefile"
diff --git a/core/modules/busybox/rtcwake-compat.patch b/core/modules/busybox/rtcwake-compat.patch
index 5b6ca615..54cb02d7 100644
--- a/core/modules/busybox/rtcwake-compat.patch
+++ b/core/modules/busybox/rtcwake-compat.patch
@@ -1,8 +1,8 @@
 diff --git a/util-linux/rtcwake.c b/util-linux/rtcwake.c
-index 8aee0cf..6d6e168 100644
+index 29c440b..1bdf906 100644
 --- a/util-linux/rtcwake.c
 +++ b/util-linux/rtcwake.c
-@@ -122,7 +122,7 @@ int rtcwake_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+@@ -132,7 +132,7 @@ int rtcwake_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  int rtcwake_main(int argc UNUSED_PARAM, char **argv)
  {
  	unsigned opt;
@@ -11,7 +11,7 @@ index 8aee0cf..6d6e168 100644
  	const char *suspend = "standby";
  	const char *opt_seconds;
  	const char *opt_time;
-@@ -134,6 +134,9 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
+@@ -144,6 +144,9 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
  	int utc = -1;
  	int fd;
  
@@ -21,19 +21,16 @@ index 8aee0cf..6d6e168 100644
  #if ENABLE_LONG_OPTS
  	static const char rtcwake_longopts[] ALIGN1 =
  		"auto\0"    No_argument "a"
-@@ -147,9 +150,10 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
- 	applet_long_options = rtcwake_longopts;
+@@ -157,7 +160,7 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
  #endif
- 	/* Must have -s or -t, exclusive */
--	opt_complementary = "s:t:s--t:t--s";
-+	opt_complementary = "s--t:t--s";
- 	opt = getopt32(argv, "alud:m:s:t:", &rtcname, &suspend, &opt_seconds, &opt_time);
+ 	opt = getopt32long(argv,
+ 			/* Must have -s or -t, exclusive */
+-			"^alud:m:s:t:" "\0" "s:t:s--t:t--s", rtcwake_longopts,
++			"^alud:m:s:t:" "\0" "s--t:t--s", rtcwake_longopts,
+ 			&rtcname, &suspend, &opt_seconds, &opt_time);
  
-+
  	/* this is the default
- 	if (opt & RTCWAKE_OPT_AUTO)
- 		utc = -1;
-@@ -159,13 +163,16 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
+@@ -169,13 +172,16 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
  	if (opt & RTCWAKE_OPT_SECONDS) {
  		/* alarm time, seconds-to-sleep (relative) */
  		seconds = xatou(opt_seconds);
@@ -52,7 +49,7 @@ index 8aee0cf..6d6e168 100644
  	}
  
  	if (utc == -1)
-@@ -177,43 +184,51 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
+@@ -187,43 +193,51 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
  	/* this RTC must exist and (if we'll sleep) be wakeup-enabled */
  	fd = rtc_xopen(&rtcname, O_RDONLY);
  
@@ -71,7 +68,21 @@ index 8aee0cf..6d6e168 100644
 +		if (strcmp(suspend, "on") != 0)
 +			if (!may_wakeup(rtcname))
 +				bb_error_msg_and_die("%s not enabled for wakeup events", rtcname);
-+
+ 
+-	if (opt & RTCWAKE_OPT_TIME) {
+-		/* Correct for RTC<->system clock difference */
+-		alarm_time += rtc_time - sys_time;
+-		if (alarm_time < rtc_time)
+-			/*
+-			 * Compat message text.
+-			 * I'd say "RTC time is already ahead of ..." instead.
+-			 */
+-			bb_error_msg_and_die("time doesn't go backward to %s", ctime(&alarm_time));
+-	} else
+-		alarm_time = rtc_time + seconds + 1;
+-
+-	setup_alarm(fd, &alarm_time, rtc_time);
+-	sync();
 +		/* relative or absolute alarm time, normalized to time_t */
 +		sys_time = time(NULL);
 +		{
@@ -93,21 +104,7 @@ index 8aee0cf..6d6e168 100644
 +			alarm_time = rtc_time + seconds + 1;
 +
 +		is_general_alarm = (rtc_time + (24 * 60 * 60)) > alarm_time;
- 
--	if (opt & RTCWAKE_OPT_TIME) {
--		/* Correct for RTC<->system clock difference */
--		alarm_time += rtc_time - sys_time;
--		if (alarm_time < rtc_time)
--			/*
--			 * Compat message text.
--			 * I'd say "RTC time is already ahead of ..." instead.
--			 */
--			bb_error_msg_and_die("time doesn't go backward to %s", ctime(&alarm_time));
--	} else
--		alarm_time = rtc_time + seconds + 1;
--
--	setup_alarm(fd, &alarm_time, rtc_time);
--	sync();
++
 +		setup_alarm(fd, &alarm_time, rtc_time);
 +		sync();
  #if 0 /*debug*/
@@ -136,7 +133,7 @@ index 8aee0cf..6d6e168 100644
  		/* "fake" suspend ... we'll do the delay ourselves */
  		unsigned long data;
  
-@@ -224,10 +239,27 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
+@@ -234,10 +248,27 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
  				break;
  			}
  		} while (!(data & RTC_AF));
diff --git a/core/modules/busybox/timeout-compat.patch b/core/modules/busybox/timeout-compat.patch
new file mode 100644
index 00000000..200cb007
--- /dev/null
+++ b/core/modules/busybox/timeout-compat.patch
@@ -0,0 +1,14 @@
+diff --git a/coreutils/timeout.c b/coreutils/timeout.c
+index 8b7bc2e..974854d 100644
+--- a/coreutils/timeout.c
++++ b/coreutils/timeout.c
+@@ -63,7 +63,7 @@ int timeout_main(int argc UNUSED_PARAM, char **argv)
+ 
+        /* -t SECONDS; -p PARENT_PID */
+        /* '+': stop at first non-option */
+-       getopt32(argv, "+s:" USE_FOR_NOMMU("p:+"), &opt_s, &parent);
++       getopt32(argv, "+s:" USE_FOR_NOMMU("p:+") "t", &opt_s, &parent);
+        /*argv += optind; - no, wait for bb_daemonize_or_rexec! */
+ 
+        signo = get_signum(opt_s);
+
-- 
cgit v1.2.3-55-g7522