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/*
* Support for decoding of KVM_* ioctl commands.
*
* Copyright (c) 2017 Masatake YAMATO <yamato@redhat.com>
* Copyright (c) 2017 Red Hat, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "defs.h"
#ifdef HAVE_LINUX_KVM_H
# include <linux/kvm.h>
# include "print_fields.h"
# include "arch_kvm.c"
static int
kvm_ioctl_create_vcpu(struct tcb *const tcp, const kernel_ulong_t arg)
{
uint32_t cpuid = arg;
tprintf(", %u", cpuid);
return RVAL_IOCTL_DECODED | RVAL_FD;
}
# ifdef HAVE_STRUCT_KVM_USERSPACE_MEMORY_REGION
# include "xlat/kvm_mem_flags.h"
static int
kvm_ioctl_set_user_memory_region(struct tcb *const tcp, const kernel_ulong_t arg)
{
struct kvm_userspace_memory_region u_memory_region;
tprints(", ");
if (umove_or_printaddr(tcp, arg, &u_memory_region))
return RVAL_IOCTL_DECODED;
PRINT_FIELD_U("{", u_memory_region, slot);
PRINT_FIELD_FLAGS(", ", u_memory_region, flags, kvm_mem_flags,
"KVM_MEM_???");
PRINT_FIELD_X(", ", u_memory_region, guest_phys_addr);
PRINT_FIELD_U(", ", u_memory_region, memory_size);
PRINT_FIELD_X(", ", u_memory_region, userspace_addr);
tprints("}");
return RVAL_IOCTL_DECODED;
}
# endif /* HAVE_STRUCT_KVM_USERSPACE_MEMORY_REGION */
# ifdef HAVE_STRUCT_KVM_REGS
static int
kvm_ioctl_decode_regs(struct tcb *const tcp, const unsigned int code,
const kernel_ulong_t arg)
{
struct kvm_regs regs;
if (code == KVM_GET_REGS && entering(tcp))
return 0;
tprints(", ");
if (!umove_or_printaddr(tcp, arg, ®s))
arch_print_kvm_regs(tcp, arg, ®s);
return RVAL_IOCTL_DECODED;
}
# endif /* HAVE_STRUCT_KVM_REGS */
# ifdef HAVE_STRUCT_KVM_SREGS
static int
kvm_ioctl_decode_sregs(struct tcb *const tcp, const unsigned int code,
const kernel_ulong_t arg)
{
struct kvm_sregs sregs;
if (code == KVM_GET_SREGS && entering(tcp))
return 0;
tprints(", ");
if (!umove_or_printaddr(tcp, arg, &sregs))
arch_print_kvm_sregs(tcp, arg, &sregs);
return RVAL_IOCTL_DECODED;
}
# endif /* HAVE_STRUCT_KVM_SREGS */
int
kvm_ioctl(struct tcb *const tcp, const unsigned int code, const kernel_ulong_t arg)
{
switch (code) {
case KVM_CREATE_VCPU:
return kvm_ioctl_create_vcpu(tcp, arg);
# ifdef HAVE_STRUCT_KVM_USERSPACE_MEMORY_REGION
case KVM_SET_USER_MEMORY_REGION:
return kvm_ioctl_set_user_memory_region(tcp, arg);
# endif
# ifdef HAVE_STRUCT_KVM_REGS
case KVM_SET_REGS:
case KVM_GET_REGS:
return kvm_ioctl_decode_regs(tcp, code, arg);
# endif
# ifdef HAVE_STRUCT_KVM_SREGS
case KVM_SET_SREGS:
case KVM_GET_SREGS:
return kvm_ioctl_decode_sregs(tcp, code, arg);
# endif
case KVM_CREATE_VM:
return RVAL_DECODED | RVAL_FD;
case KVM_RUN:
case KVM_GET_VCPU_MMAP_SIZE:
case KVM_GET_API_VERSION:
default:
return RVAL_DECODED;
}
}
#endif /* HAVE_LINUX_KVM_H */
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