| /* | |
| * include/linux/ashmem.h | |
| * | |
| * Copyright 2008 Google Inc. | |
| * Author: Robert Love | |
| * | |
| * This file is dual licensed. It may be redistributed and/or modified | |
| * under the terms of the Apache 2.0 License OR version 2 of the GNU | |
| * General Public License. | |
| */ | |
| #ifndef _LINUX_ASHMEM_H | |
| #define _LINUX_ASHMEM_H | |
| #include <linux/limits.h> | |
| #include <linux/ioctl.h> | |
| #define ASHMEM_NAME_LEN 256 | |
| #define ASHMEM_NAME_DEF "dev/ashmem" | |
| /* Return values from ASHMEM_PIN: Was the mapping purged while unpinned? */ | |
| #define ASHMEM_NOT_PURGED 0 | |
| #define ASHMEM_WAS_PURGED 1 | |
| /* Return values from ASHMEM_GET_PIN_STATUS: Is the mapping pinned? */ | |
| #define ASHMEM_IS_UNPINNED 0 | |
| #define ASHMEM_IS_PINNED 1 | |
| struct ashmem_pin { | |
| __u32 offset; /* offset into region, in bytes, page-aligned */ | |
| __u32 len; /* length forward from offset, in bytes, page-aligned */ | |
| }; | |
| #define __ASHMEMIOC 0x77 | |
| #define ASHMEM_SET_NAME _IOW(__ASHMEMIOC, 1, char[ASHMEM_NAME_LEN]) | |
| #define ASHMEM_GET_NAME _IOR(__ASHMEMIOC, 2, char[ASHMEM_NAME_LEN]) | |
| #define ASHMEM_SET_SIZE _IOW(__ASHMEMIOC, 3, size_t) | |
| #define ASHMEM_GET_SIZE _IO(__ASHMEMIOC, 4) | |
| #define ASHMEM_SET_PROT_MASK _IOW(__ASHMEMIOC, 5, unsigned long) | |
| #define ASHMEM_GET_PROT_MASK _IO(__ASHMEMIOC, 6) | |
| #define ASHMEM_PIN _IOW(__ASHMEMIOC, 7, struct ashmem_pin) | |
| #define ASHMEM_UNPIN _IOW(__ASHMEMIOC, 8, struct ashmem_pin) | |
| #define ASHMEM_GET_PIN_STATUS _IO(__ASHMEMIOC, 9) | |
| #define ASHMEM_PURGE_ALL_CACHES _IO(__ASHMEMIOC, 10) | |
| #endif /* _LINUX_ASHMEM_H */ |