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disable suspend if booting from removable storage

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This commit is contained in:
Stefan Saraev 2014-03-22 16:11:28 +02:00
parent 566479528c
commit 803bc002b9
2 changed files with 50 additions and 0 deletions
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23
packages/sysutils/busybox/scripts/init
View File

@ -588,6 +588,25 @@
BOOT_STEP=final
# no suspend when booted from nonpersistent storage
STORAGE=$(cat /proc/mounts | grep " /sysroot/storage " | awk '{print $1}' | awk -F '/' '{print $3}')
if [ -n "$STORAGE" ] ; then
removable="/sys/class/block/*/$STORAGE/../removable"
if [ -e $removable ] ; then
if [ "$(cat $removable 2>/dev/null)" = "1" ] ; then
SUSPEND_DISABLED=yes
fi
fi
fi
FLASH=$(cat /proc/mounts | grep " /sysroot/flash " | awk '{print $1}' | awk -F '/' '{print $3}')
if [ -n "$FLASH" ] ; then
removable="/sys/class/block/*/$FLASH/../removable"
if [ -e $removable ] ; then
if [ "$(cat $removable 2>/dev/null)" = "1" ] ; then
SUSPEND_DISABLED=yes
fi
fi
fi
# move some special filesystems
/bin/busybox mount --move /dev /sysroot/dev
/bin/busybox mount --move /proc /sysroot/proc
@ -601,6 +620,10 @@
if [ "$STORAGE_NETBOOT" = "yes" ] ; then
echo "" > /sysroot/dev/.storage_netboot
fi
# no suspend when booted from nonpersistent storage
if [ "$SUSPEND_DISABLED" = "yes" ] ; then
echo "" > /sysroot/dev/.suspend_disabled
fi
# switch to new sysroot and start real init
exec /bin/busybox switch_root /sysroot /usr/lib/systemd/systemd $INIT_ARGS

27
packages/sysutils/systemd/patches/systemd-11_disable-suspend-if-dev-.suspend_disabled-exist.patch Normal file
View File

@ -0,0 +1,27 @@
From a8ad8aadc39820594f89d43aa0f8d527b256aa99 Mon Sep 17 00:00:00 2001
From: Stefan Saraev <stefan@saraev.ca>
Date: Sat, 22 Mar 2014 13:40:55 +0200
Subject: [PATCH] disable suspend if /dev/.suspend_disabled exist
---
src/shared/sleep-config.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/shared/sleep-config.c b/src/shared/sleep-config.c
index cf1cd40..f6ad307 100644
--- a/src/shared/sleep-config.c
+++ b/src/shared/sleep-config.c
@@ -256,6 +256,10 @@ int can_sleep(const char *verb) {
streq(verb, "hibernate") ||
streq(verb, "hybrid-sleep"));
+ // boo
+ if (access("/dev/.suspend_disabled", F_OK) == 0)
+ return false;
+
r = parse_sleep_config(verb, &modes, &states);
if (r < 0)
return false;
--
1.9.1