Commit abfd0ec5 authored by Andrew Morton's avatar Andrew Morton Committed by Linus Torvalds

[PATCH] dm: Fix 64/32 bit ioctl problems.

From: Kevin Corry <kevcorry@us.ibm.com>

Fix 64/32 bit ioctl problems.
parent bea63af0
...@@ -123,6 +123,19 @@ COMPATIBLE_IOCTL(STOP_ARRAY) ...@@ -123,6 +123,19 @@ COMPATIBLE_IOCTL(STOP_ARRAY)
COMPATIBLE_IOCTL(STOP_ARRAY_RO) COMPATIBLE_IOCTL(STOP_ARRAY_RO)
COMPATIBLE_IOCTL(RESTART_ARRAY_RW) COMPATIBLE_IOCTL(RESTART_ARRAY_RW)
/* DM */ /* DM */
COMPATIBLE_IOCTL(DM_VERSION_32)
COMPATIBLE_IOCTL(DM_LIST_DEVICES_32)
COMPATIBLE_IOCTL(DM_DEV_CREATE_32)
COMPATIBLE_IOCTL(DM_DEV_REMOVE_32)
COMPATIBLE_IOCTL(DM_DEV_RENAME_32)
COMPATIBLE_IOCTL(DM_DEV_SUSPEND_32)
COMPATIBLE_IOCTL(DM_DEV_STATUS_32)
COMPATIBLE_IOCTL(DM_DEV_WAIT_32)
COMPATIBLE_IOCTL(DM_TABLE_LOAD_32)
COMPATIBLE_IOCTL(DM_TABLE_CLEAR_32)
COMPATIBLE_IOCTL(DM_TABLE_DEPS_32)
COMPATIBLE_IOCTL(DM_TABLE_STATUS_32)
COMPATIBLE_IOCTL(DM_LIST_VERSIONS_32)
COMPATIBLE_IOCTL(DM_VERSION) COMPATIBLE_IOCTL(DM_VERSION)
COMPATIBLE_IOCTL(DM_LIST_DEVICES) COMPATIBLE_IOCTL(DM_LIST_DEVICES)
COMPATIBLE_IOCTL(DM_DEV_CREATE) COMPATIBLE_IOCTL(DM_DEV_CREATE)
......
...@@ -200,6 +200,34 @@ enum { ...@@ -200,6 +200,34 @@ enum {
DM_LIST_VERSIONS_CMD, DM_LIST_VERSIONS_CMD,
}; };
/*
* The dm_ioctl struct passed into the ioctl is just the header
* on a larger chunk of memory. On x86-64 and other
* architectures the dm-ioctl struct will be padded to an 8 byte
* boundary so the size will be different, which would change the
* ioctl code - yes I really messed up. This hack forces these
* architectures to have the correct ioctl code.
*/
#ifdef CONFIG_COMPAT
typedef char ioctl_struct[308];
#define DM_VERSION_32 _IOWR(DM_IOCTL, DM_VERSION_CMD, ioctl_struct)
#define DM_REMOVE_ALL_32 _IOWR(DM_IOCTL, DM_REMOVE_ALL_CMD, ioctl_struct)
#define DM_LIST_DEVICES_32 _IOWR(DM_IOCTL, DM_LIST_DEVICES_CMD, ioctl_struct)
#define DM_DEV_CREATE_32 _IOWR(DM_IOCTL, DM_DEV_CREATE_CMD, ioctl_struct)
#define DM_DEV_REMOVE_32 _IOWR(DM_IOCTL, DM_DEV_REMOVE_CMD, ioctl_struct)
#define DM_DEV_RENAME_32 _IOWR(DM_IOCTL, DM_DEV_RENAME_CMD, ioctl_struct)
#define DM_DEV_SUSPEND_32 _IOWR(DM_IOCTL, DM_DEV_SUSPEND_CMD, ioctl_struct)
#define DM_DEV_STATUS_32 _IOWR(DM_IOCTL, DM_DEV_STATUS_CMD, ioctl_struct)
#define DM_DEV_WAIT_32 _IOWR(DM_IOCTL, DM_DEV_WAIT_CMD, ioctl_struct)
#define DM_TABLE_LOAD_32 _IOWR(DM_IOCTL, DM_TABLE_LOAD_CMD, ioctl_struct)
#define DM_TABLE_CLEAR_32 _IOWR(DM_IOCTL, DM_TABLE_CLEAR_CMD, ioctl_struct)
#define DM_TABLE_DEPS_32 _IOWR(DM_IOCTL, DM_TABLE_DEPS_CMD, ioctl_struct)
#define DM_TABLE_STATUS_32 _IOWR(DM_IOCTL, DM_TABLE_STATUS_CMD, ioctl_struct)
#define DM_LIST_VERSIONS_32 _IOWR(DM_IOCTL, DM_LIST_VERSIONS_CMD, ioctl_struct)
#endif
#define DM_IOCTL 0xfd #define DM_IOCTL 0xfd
#define DM_VERSION _IOWR(DM_IOCTL, DM_VERSION_CMD, struct dm_ioctl) #define DM_VERSION _IOWR(DM_IOCTL, DM_VERSION_CMD, struct dm_ioctl)
......
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