dev_ashmem.txt

# Copyright 2017 syzkaller project authors. All rights reserved.
# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.

# Ashmem was removed in v5.18:
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=721412ed3d819e767cac2b06646bf03aa158aaec
# but still present in LTS 5.4/10 kernels which we want to support for some time.
# Extract now fails due to missing headers.
meta noextract

include <asm/ioctl.h>
include <uapi/linux/fcntl.h>
include <drivers/staging/android/uapi/ashmem.h>

resource fd_ashmem[fd]

openat$ashmem(fd const[AT_FDCWD], file ptr[in, string["/dev/ashmem"]], flags flags[open_flags], mode const[0]) fd_ashmem

ioctl$ASHMEM_SET_NAME(fd fd_ashmem, cmd const[ASHMEM_SET_NAME], arg ptr[in, string])
ioctl$ASHMEM_GET_NAME(fd fd_ashmem, cmd const[ASHMEM_GET_NAME], arg ptr[out, array[int8]])
ioctl$ASHMEM_SET_SIZE(fd fd_ashmem, cmd const[ASHMEM_SET_SIZE], arg intptr)
ioctl$ASHMEM_GET_SIZE(fd fd_ashmem, cmd const[ASHMEM_GET_SIZE], arg const[0])
ioctl$ASHMEM_SET_PROT_MASK(fd fd_ashmem, cmd const[ASHMEM_SET_PROT_MASK], arg ptr[in, ashmem_pin])
ioctl$ASHMEM_GET_PROT_MASK(fd fd_ashmem, cmd const[ASHMEM_GET_PROT_MASK], arg ptr[out, ashmem_pin])
ioctl$ASHMEM_GET_PIN_STATUS(fd fd_ashmem, cmd const[ASHMEM_GET_PIN_STATUS], arg const[0])
ioctl$ASHMEM_PURGE_ALL_CACHES(fd fd_ashmem, cmd const[ASHMEM_PURGE_ALL_CACHES], arg const[0])

ashmem_pin {
	offset	int32
	len	int32
}