sys/openbsd/dev_vmm.txt

# Copyright 2019 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.

include <sys/param.h>
include <sys/ioctl.h>
include <sys/fcntl.h>

include <machine/param.h>
include <machine/vmmvar.h>

resource fd_vmm[fd]

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

ioctl$VMM_IOC_CREATE(fd fd_vmm, cmd const[VMM_IOC_CREATE], arg ptr[in, vm_create_params])
ioctl$VMM_IOC_INFO(fd fd_vmm, cmd const[VMM_IOC_INFO], arg ptr[out, vm_info_params])
ioctl$VMM_IOC_INTR(fd fd_vmm, cmd const[VMM_IOC_INTR], arg ptr[in, vm_intr_params])
ioctl$VMM_IOC_READREGS(fd fd_vmm, cmd const[VMM_IOC_READREGS], arg ptr[out, vm_rwregs_params])
ioctl$VMM_IOC_RESETCPU(fd fd_vmm, cmd const[VMM_IOC_RESETCPU], arg ptr[in, vm_resetcpu_params])
ioctl$VMM_IOC_RUN(fd fd_vmm, cmd const[VMM_IOC_RUN], arg ptr[in, vm_run_params])
ioctl$VMM_IOC_TERM(fd fd_vmm, cmd const[VMM_IOC_TERM], arg ptr[in, vm_terminate_params])
ioctl$VMM_IOC_WRITEREGS(fd fd_vmm, cmd const[VMM_IOC_WRITEREGS], arg ptr[in, vm_rwregs_params])

vcpu_reg_state {
	vrs_gprs	array[int64, VCPU_REGS_NGPRS]
	vrs_crs		array[int64, VCPU_REGS_NCRS]
	vrs_msrs	array[int64, VCPU_REGS_NMSRS]
	vrs_drs		array[int64, VCPU_REGS_NDRS]
	vrs_sregs	array[vcpu_segment_info, VCPU_REGS_NSREGS]
	vrs_gdtr	vcpu_segment_info
	vrs_idtr	vcpu_segment_info
}

vcpu_segment_info {
	vsi_sel		int16
	vsi_limit	int32
	vsi_ar		int32
	vsi_base	int64
}

vm_create_params {
	vcp_nmemranges	len[vcp_memranges, int64]
	vcp_ncpus	int64
	vcp_ndisks	len[vcp_disks, int64]
	vcp_nnics	int64
	vcp_memranges	array[vm_mem_range, VMM_MAX_MEM_RANGES]
	vcp_disks	array[string[filename, VMM_MAX_PATH_DISK], VMM_MAX_DISKS_PER_VM]
	vcp_cdrom	string[filename, VMM_MAX_PATH_CDROM]
	vcp_name	string[filename, VMM_MAX_NAME_LEN]
	vcp_kernel	string[filename, VMM_MAX_KERNEL_PATH]
	vcp_macs	array[string[filename, 6], VMM_MAX_NICS_PER_VM]
# NEED: actual out parameter, syz_vmm_create(arg ptr[in, vm_create_params]) vmid
	vcp_id		int32
}

vm_exit {
	vei	vm_exit_inout
	vrs	vcpu_reg_state
}

vm_exit_inout {
	vei_size	int8
	vei_dir		int8
	vei_rep		int8
	vei_string	int8
	vei_encoding	int8
	vei_port	int16
	vei_data	int32
}

vm_info_params {
	vip_size	len[vip_info, int64]
	vip_info_ct	int64
	vip_info	buffer[out]
}

vm_intr_params {
# NEED: vmid
	vip_vm_id	int32
	vip_vcpu_id	int32
	vip_intr	int16
}

vm_mem_range {
	vmr_gpa		vma64
	vmr_va		vma64
	vmr_size	int64
}

vm_resetcpu_params {
# NEED: vmid
	vrp_vm_id	int32
	vrp_vcpu_id	int32
	vrp_init_state	vcpu_reg_state
}

vm_run_params {
# NEED: vmid
	vrp_vm_id	int32
	vrp_vcpu_id	int32
	vrp_continue	int8
	vrp_irq		int16
	vrp_exit	ptr[inout, vm_exit]
	vrp_exit_reason	int16
	vrp_irqready	int8
}

vm_rwregs_params {
# NEED: vmid
	vrwp_vm_id	int32
	vrwp_vcpu_id	int32
	vrwp_mask	int64
	vrwp_regs	vcpu_reg_state
}

vm_terminate_params {
# NEED: vmid
	vtp_vm_id	int32
}