Hibernation: Introduce exportable suspend ioctls header (rev. 2)

Move the definitions of hibernation ioctls to a separate header file in
include/linux, which can be exported to the user space.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Len Brown <len.brown@intel.com>

2 files changed, 33 insertions, 0 deletions

diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index 85b2482cc736..c0f9bb78727d 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -143,6 +143,7 @@ header-y += snmp.h
 header-y += sockios.h
 header-y += som.h
 header-y += sound.h
+header-y += suspend_ioctls.h
 header-y += taskstats.h
 header-y += telephony.h
 header-y += termios.h
diff --git a/include/linux/suspend_ioctls.h b/include/linux/suspend_ioctls.h
new file mode 100644
index 000000000000..2c6faec96bde
--- /dev/null
+++ b/include/linux/suspend_ioctls.h
@@ -0,0 +1,32 @@
+#ifndef _LINUX_SUSPEND_IOCTLS_H
+#define _LINUX_SUSPEND_IOCTLS_H
+
+/*
+ * This structure is used to pass the values needed for the identification
+ * of the resume swap area from a user space to the kernel via the
+ * SNAPSHOT_SET_SWAP_AREA ioctl
+ */
+struct resume_swap_area {
+        loff_t offset;
+        u_int32_t dev;
+} __attribute__((packed));
+
+#define SNAPSHOT_IOC_MAGIC      '3'
+#define SNAPSHOT_FREEZE                 _IO(SNAPSHOT_IOC_MAGIC, 1)
+#define SNAPSHOT_UNFREEZE               _IO(SNAPSHOT_IOC_MAGIC, 2)
+#define SNAPSHOT_ATOMIC_RESTORE         _IO(SNAPSHOT_IOC_MAGIC, 4)
+#define SNAPSHOT_FREE                   _IO(SNAPSHOT_IOC_MAGIC, 5)
+#define SNAPSHOT_FREE_SWAP_PAGES        _IO(SNAPSHOT_IOC_MAGIC, 9)
+#define SNAPSHOT_S2RAM                  _IO(SNAPSHOT_IOC_MAGIC, 11)
+#define SNAPSHOT_SET_SWAP_AREA          _IOW(SNAPSHOT_IOC_MAGIC, 13, \
+                                                        struct resume_swap_area)
+#define SNAPSHOT_GET_IMAGE_SIZE         _IOR(SNAPSHOT_IOC_MAGIC, 14, loff_t)
+#define SNAPSHOT_PLATFORM_SUPPORT       _IO(SNAPSHOT_IOC_MAGIC, 15)
+#define SNAPSHOT_POWER_OFF              _IO(SNAPSHOT_IOC_MAGIC, 16)
+#define SNAPSHOT_CREATE_IMAGE           _IOW(SNAPSHOT_IOC_MAGIC, 17, int)
+#define SNAPSHOT_PREF_IMAGE_SIZE        _IO(SNAPSHOT_IOC_MAGIC, 18)
+#define SNAPSHOT_AVAIL_SWAP_SIZE        _IOR(SNAPSHOT_IOC_MAGIC, 19, loff_t)
+#define SNAPSHOT_ALLOC_SWAP_PAGE        _IOR(SNAPSHOT_IOC_MAGIC, 20, loff_t)
+#define SNAPSHOT_IOC_MAXNR      20
+
+#endif /* _LINUX_SUSPEND_IOCTLS_H */