1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 *** To edit the content of this header, modify the corresponding 11 *** source file (e.g. under external/kernel-headers/original/) then 12 *** run bionic/libc/kernel/tools/update_all.py 13 *** 14 *** Any manual change here will be lost the next time this script will 15 *** be run. You've been warned! 16 *** 17 **************************************************************************** 18 ****************************************************************************/ 19 #ifndef _LINUX_CACHEFILES_H 20 #define _LINUX_CACHEFILES_H 21 #include <linux/types.h> 22 #include <linux/ioctl.h> 23 #define CACHEFILES_MSG_MAX_SIZE 1024 24 enum cachefiles_opcode { 25 CACHEFILES_OP_OPEN, 26 CACHEFILES_OP_CLOSE, 27 CACHEFILES_OP_READ, 28 }; 29 struct cachefiles_msg { 30 __u32 msg_id; 31 __u32 opcode; 32 __u32 len; 33 __u32 object_id; 34 __u8 data[]; 35 }; 36 struct cachefiles_open { 37 __u32 volume_key_size; 38 __u32 cookie_key_size; 39 __u32 fd; 40 __u32 flags; 41 __u8 data[]; 42 }; 43 struct cachefiles_read { 44 __u64 off; 45 __u64 len; 46 }; 47 #define CACHEFILES_IOC_READ_COMPLETE _IOW(0x98, 1, int) 48 #endif 49