Commit d3155742 authored by Gustavo A. R. Silva's avatar Gustavo A. R. Silva Committed by Takashi Sakamoto
Browse files

firewire: Annotate struct fw_iso_packet with __counted_by() 



Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time via CONFIG_UBSAN_BOUNDS (for
array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).

Signed-off-by: default avatarGustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/ZgIrOuR3JI/jzqoH@neat


Signed-off-by: default avatarTakashi Sakamoto <o-takashi@sakamocchi.jp>
parent f83a052f

include/linux/firewire.h

+2 −1
Original line number Diff line number Diff line
@@ -463,7 +463,8 @@ struct fw_iso_packet { 
	u32 tag:2;		/* tx: Tag in packet header		*/

	u32 sy:4;		/* tx: Sy in packet header		*/

	u32 header_length:8;	/* Length of immediate header		*/

	u32 header[];		/* tx: Top of 1394 isoch. data_block	*/

				/* tx: Top of 1394 isoch. data_block    */

	u32 header[] __counted_by(header_length);

};



#define FW_ISO_CONTEXT_TRANSMIT			0