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| author |   Domenico Andreoli <domenico.andreoli@linux.com> | 2020-05-07 09:19:53 +0200 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-05-19 17:48:08 +0200 |
| commit | c4f39a6c74389fcc93ac39056ef342f32ab57a23 (patch) | |
| tree | 59060a6eeb86e2c22f3c681afc0beabdfa935a72 /kernel/power | |
| parent | PM: hibernate: Incorporate concurrency handling (diff) | |
| download | linux-dev-c4f39a6c74389fcc93ac39056ef342f32ab57a23.tar.xz linux-dev-c4f39a6c74389fcc93ac39056ef342f32ab57a23.zip | |
PM: hibernate: Split off snapshot dev option
Make it possible to reduce the attack surface in case the snapshot
device is not to be used from userspace.
Signed-off-by: Domenico Andreoli <domenico.andreoli@linux.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/Kconfig | 12 | ||||
| -rw-r--r-- | kernel/power/Makefile | 3 |
2 files changed, 14 insertions, 1 deletions
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index c208566c844b..4d0e6e815a2b 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -80,6 +80,18 @@ config HIBERNATION For more information take a look at <file:Documentation/power/swsusp.rst>. +config HIBERNATION_SNAPSHOT_DEV + bool "Userspace snapshot device" + depends on HIBERNATION + default y + ---help--- + Device used by the uswsusp tools. + + Say N if no snapshotting from userspace is needed, this also + reduces the attack surface of the kernel. + + If in doubt, say Y. + config PM_STD_PARTITION string "Default resume partition" depends on HIBERNATION diff --git a/kernel/power/Makefile b/kernel/power/Makefile index e7e47d9be1e5..5899260a8bef 100644 --- a/kernel/power/Makefile +++ b/kernel/power/Makefile @@ -10,7 +10,8 @@ obj-$(CONFIG_VT_CONSOLE_SLEEP) += console.o obj-$(CONFIG_FREEZER) += process.o obj-$(CONFIG_SUSPEND) += suspend.o obj-$(CONFIG_PM_TEST_SUSPEND) += suspend_test.o -obj-$(CONFIG_HIBERNATION) += hibernate.o snapshot.o swap.o user.o +obj-$(CONFIG_HIBERNATION) += hibernate.o snapshot.o swap.o +obj-$(CONFIG_HIBERNATION_SNAPSHOT_DEV) += user.o obj-$(CONFIG_PM_AUTOSLEEP) += autosleep.o obj-$(CONFIG_PM_WAKELOCKS) += wakelock.o |