This patch adds all the needed compat structures to binder.h. All the
structures defined in this patch mirror the structure and size of 32bit
ones.
Signed-off-by: Serban Constantinescu <serban.constantinescu@xxxxxxx>
---
drivers/staging/android/binder.h | 109 ++++++++++++++++++++++++++++++++++++++
1 file changed, 109 insertions(+)
diff --git a/drivers/staging/android/binder.h b/drivers/staging/android/binder.h
index cbe3451..6c9849d 100644
--- a/drivers/staging/android/binder.h
+++ b/drivers/staging/android/binder.h
@@ -22,6 +22,10 @@
#include <linux/ioctl.h>
+#ifdef CONFIG_COMPAT
+#include <linux/compat.h>
+#endif
+
#define B_PACK_CHARS(c1, c2, c3, c4) \
((((c1)<<24)) | (((c2)<<16)) | (((c3)<<8)) | (c4))
#define B_TYPE_LARGE 0x85
@@ -326,5 +330,110 @@ enum binder_driver_command_protocol {
*/
};
+/* Support for 32bit userspace on a 64bit system */
+#ifdef CONFIG_COMPAT
+struct compat_flat_binder_object {
+ /* 8 bytes for large_flat_header. */
+ __u32 type;
+ __u32 flags;
+
+ /* 8 bytes of data. */
+ union {
+ compat_uptr_t binder; /* local object */
+ __u32 handle; /* remote object */
+ };
+
+ /* extra data associated with local object */
+ compat_uptr_t cookie;
+};
+
+struct compat_binder_write_read {
+ compat_size_t write_size; /* bytes to write */
+ compat_size_t write_consumed; /* bytes consumed by driver */
+ compat_ulong_t write_buffer;
+ compat_size_t read_size; /* bytes to read */
+ compat_size_t read_consumed; /* bytes consumed by driver */
+ compat_ulong_t read_buffer;
+};
+
+#define COMPAT_BINDER_WRITE_READ _IOWR('b', 1, struct compat_binder_write_read)
+
+struct compat_binder_transaction_data {
+ /* The first two are only used for bcTRANSACTION and brTRANSACTION,
+ * identifying the target and contents of the transaction.
+ */
+ union {
+ __u32 handle; /* target descriptor of command transaction */
+ compat_uptr_t ptr; /* target descriptor of return transaction */
+ } target;
+ compat_uptr_t cookie; /* target object cookie */
+ __u32 code; /* transaction command */
+
+ /* General information about the transaction. */
+ __u32 flags;
+ pid_t sender_pid;
+ uid_t sender_euid;
+ compat_size_t data_size; /* number of bytes of data */
+ compat_size_t offsets_size; /* number of bytes of offsets */
+
+ /* If this transaction is inline, the data immediately
+ * follows here; otherwise, it ends with a pointer to
+ * the data buffer.
+ */
+ union {
+ struct {
+ /* transaction data */
+ compat_uptr_t buffer;
+ /* offsets from buffer to flat_binder_object structs */
+ compat_uptr_t offsets;
+ } ptr;
+ __u8 buf[8];
+ } data;
+};
+
+struct compat_binder_ptr_cookie {
+ compat_uptr_t ptr;
+ compat_uptr_t cookie;
+};
+
+/* legacy - not used anymore */
+struct compat_binder_pri_ptr_cookie {
+ __s32 priority;
+ compat_uptr_t ptr;
+ compat_uptr_t cookie;
+};
+
+enum compat_binder_driver_return_protocol {
+ COMPAT_BR_TRANSACTION = _IOR('r', 2, struct compat_binder_transaction_data),
+ COMPAT_BR_REPLY = _IOR('r', 3, struct compat_binder_transaction_data),
+
+ COMPAT_BR_INCREFS = _IOR('r', 7, struct compat_binder_ptr_cookie),
+ COMPAT_BR_ACQUIRE = _IOR('r', 8, struct compat_binder_ptr_cookie),
+ COMPAT_BR_RELEASE = _IOR('r', 9, struct compat_binder_ptr_cookie),
+ COMPAT_BR_DECREFS = _IOR('r', 10, struct compat_binder_ptr_cookie),
+
+ /* legacy - not used anymore */
+ COMPAT_BR_ATTEMPT_ACQUIRE = _IOR('r', 11, struct compat_binder_pri_ptr_cookie),
+
+ COMPAT_BR_DEAD_BINDER = _IOR('r', 15, compat_uptr_t),
+ COMPAT_BR_CLEAR_DEATH_NOTIFICATION_DONE = _IOR('r', 16, compat_uptr_t),
+};
+
+enum compat_binder_driver_command_protocol {
+ COMPAT_BC_TRANSACTION = _IOW('c', 0, struct compat_binder_transaction_data),
+ COMPAT_BC_REPLY = _IOW('c', 1, struct compat_binder_transaction_data),
+
+ COMPAT_BC_FREE_BUFFER = _IOW('c', 3, compat_uptr_t),
+
+ COMPAT_BC_INCREFS_DONE = _IOW('c', 8, struct compat_binder_ptr_cookie),
+ COMPAT_BC_ACQUIRE_DONE = _IOW('c', 9, struct compat_binder_ptr_cookie),
+
+ COMPAT_BC_REQUEST_DEATH_NOTIFICATION = _IOW('c', 14, struct compat_binder_ptr_cookie),
+ COMPAT_BC_CLEAR_DEATH_NOTIFICATION = _IOW('c', 15, struct compat_binder_ptr_cookie),
+
+ COMPAT_BC_DEAD_BINDER_DONE = _IOW('c', 16, compat_uptr_t),
+};
+#endif /* CONFIG_COMPAT */
+
#endif /* _LINUX_BINDER_H */
--
1.7.9.5
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