android_system_core/libcutils/include/cutils/ashmem.h
Tri Vo 92fd3caff7 libcutils: route to /dev/ashmem<boot_id> instead of ashmemd
Having libcutils ask ashmemd for ashmem fds results in unsatisfactory
performance/memory overhead. Introduce a duplicate of /dev/ashmem and
route to it instead.

Our goal remains as before, namely, use SELinux to phase out usage of
ashmem that doesn't go through libcutils.

Bug: 139855428
Test: boot aosp_crosshatch, browse internet, use camera
Change-Id: I02260a9042acb412571b11f1f4c1d8608483064a
2019-09-25 12:50:16 -07:00

34 lines
767 B
C

/* cutils/ashmem.h
**
** Copyright 2008 The Android Open Source Project
**
** 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 _CUTILS_ASHMEM_H
#define _CUTILS_ASHMEM_H
#include <stddef.h>
#if defined(__BIONIC__)
#include <linux/ashmem.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
int ashmem_valid(int fd);
int ashmem_create_region(const char *name, size_t size);
int ashmem_set_prot_region(int fd, int prot);
int ashmem_pin_region(int fd, size_t offset, size_t len);
int ashmem_unpin_region(int fd, size_t offset, size_t len);
int ashmem_get_size_region(int fd);
#ifdef __cplusplus
}
#endif
#endif /* _CUTILS_ASHMEM_H */