| /* |
| * 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> |
| #include <linux/compat.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) |
| |
| /* support of 32bit userspace on 64bit platforms */ |
| #ifdef CONFIG_COMPAT |
| #define COMPAT_ASHMEM_SET_SIZE _IOW(__ASHMEMIOC, 3, compat_size_t) |
| #define COMPAT_ASHMEM_SET_PROT_MASK _IOW(__ASHMEMIOC, 5, unsigned int) |
| #endif |
| |
| #endif /* _LINUX_ASHMEM_H */ |
