647709d8e5
* configure.ac (AC_CHECK_TYPES): Add struct kvm_sregs. * kvm.c [HAVE_STRUCT_KVM_SREGS] (kvm_ioctl_decode_sregs): New function. (kvm_ioctl) [HAVE_STRUCT_KVM_SREGS] <KVM_SET_SREGS, KVM_GET_SREGS>: Use it. * linux/arch_kvm.c (arch_print_kvm_sregs): New function. * linux/x86_64/arch_kvm.c (PRINT_FIELD_KVM_SREGS_STRUCT): New macro. (kvm_ioctl_decode_regs_dtable, kvm_ioctl_decode_regs_segment, arch_print_kvm_sregs): New functions. Signed-off-by: Masatake YAMATO <yamato@redhat.com>
141 lines
4.1 KiB
C
141 lines
4.1 KiB
C
/*
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* Support for decoding of KVM_* ioctl commands.
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*
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* Copyright (c) 2017 Masatake YAMATO <yamato@redhat.com>
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* Copyright (c) 2017 Red Hat, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "defs.h"
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#ifdef HAVE_LINUX_KVM_H
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# include <linux/kvm.h>
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# include "print_fields.h"
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# include "arch_kvm.c"
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static int
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kvm_ioctl_create_vcpu(struct tcb *const tcp, const kernel_ulong_t arg)
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{
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uint32_t cpuid = arg;
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tprintf(", %u", cpuid);
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return RVAL_IOCTL_DECODED | RVAL_FD;
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}
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# ifdef HAVE_STRUCT_KVM_USERSPACE_MEMORY_REGION
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# include "xlat/kvm_mem_flags.h"
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static int
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kvm_ioctl_set_user_memory_region(struct tcb *const tcp, const kernel_ulong_t arg)
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{
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struct kvm_userspace_memory_region u_memory_region;
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tprints(", ");
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if (umove_or_printaddr(tcp, arg, &u_memory_region))
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return RVAL_IOCTL_DECODED;
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PRINT_FIELD_U("{", u_memory_region, slot);
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PRINT_FIELD_FLAGS(", ", u_memory_region, flags, kvm_mem_flags,
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"KVM_MEM_???");
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PRINT_FIELD_X(", ", u_memory_region, guest_phys_addr);
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PRINT_FIELD_U(", ", u_memory_region, memory_size);
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PRINT_FIELD_X(", ", u_memory_region, userspace_addr);
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tprints("}");
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return RVAL_IOCTL_DECODED;
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}
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# endif /* HAVE_STRUCT_KVM_USERSPACE_MEMORY_REGION */
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# ifdef HAVE_STRUCT_KVM_REGS
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static int
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kvm_ioctl_decode_regs(struct tcb *const tcp, const unsigned int code,
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const kernel_ulong_t arg)
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{
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struct kvm_regs regs;
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if (code == KVM_GET_REGS && entering(tcp))
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return 0;
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tprints(", ");
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if (!umove_or_printaddr(tcp, arg, ®s))
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arch_print_kvm_regs(tcp, arg, ®s);
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return RVAL_IOCTL_DECODED;
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}
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# endif /* HAVE_STRUCT_KVM_REGS */
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# ifdef HAVE_STRUCT_KVM_SREGS
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static int
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kvm_ioctl_decode_sregs(struct tcb *const tcp, const unsigned int code,
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const kernel_ulong_t arg)
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{
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struct kvm_sregs sregs;
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if (code == KVM_GET_SREGS && entering(tcp))
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return 0;
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tprints(", ");
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if (!umove_or_printaddr(tcp, arg, &sregs))
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arch_print_kvm_sregs(tcp, arg, &sregs);
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return RVAL_IOCTL_DECODED;
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}
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# endif /* HAVE_STRUCT_KVM_SREGS */
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int
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kvm_ioctl(struct tcb *const tcp, const unsigned int code, const kernel_ulong_t arg)
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{
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switch (code) {
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case KVM_CREATE_VCPU:
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return kvm_ioctl_create_vcpu(tcp, arg);
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# ifdef HAVE_STRUCT_KVM_USERSPACE_MEMORY_REGION
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case KVM_SET_USER_MEMORY_REGION:
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return kvm_ioctl_set_user_memory_region(tcp, arg);
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# endif
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# ifdef HAVE_STRUCT_KVM_REGS
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case KVM_SET_REGS:
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case KVM_GET_REGS:
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return kvm_ioctl_decode_regs(tcp, code, arg);
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# endif
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# ifdef HAVE_STRUCT_KVM_SREGS
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case KVM_SET_SREGS:
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case KVM_GET_SREGS:
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return kvm_ioctl_decode_sregs(tcp, code, arg);
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# endif
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case KVM_CREATE_VM:
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return RVAL_DECODED | RVAL_FD;
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case KVM_RUN:
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case KVM_GET_VCPU_MMAP_SIZE:
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case KVM_GET_API_VERSION:
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default:
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return RVAL_DECODED;
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}
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}
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#endif /* HAVE_LINUX_KVM_H */
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