Dmitry V. Levin
7fa3d78319
Remove temporary types created for transition from long to kernel_ulong_t. Automatically replace kernel_scno_t and kernel_ureg_t with kernel_ulong_t using $ git grep -El 'kernel_(scno|ureg)_t' | xargs sed -ri 's/kernel_(scno|ureg)_t/kernel_ulong_t/g' * kernel_types.h (kernel_scno_t, kernel_ureg_t): Remove. All users updated.
160 lines
4.5 KiB
C
160 lines
4.5 KiB
C
/*
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* Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
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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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#include <fcntl.h>
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#include "xlat/uffd_flags.h"
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SYS_FUNC(userfaultfd)
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{
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printflags(uffd_flags, tcp->u_arg[0], "UFFD_???");
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return RVAL_DECODED | RVAL_FD;
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}
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#ifdef HAVE_LINUX_USERFAULTFD_H
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# include <linux/ioctl.h>
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# include <linux/userfaultfd.h>
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# include "xlat/uffd_api_flags.h"
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# include "xlat/uffd_copy_flags.h"
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# include "xlat/uffd_register_ioctl_flags.h"
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# include "xlat/uffd_register_mode_flags.h"
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# include "xlat/uffd_zeropage_flags.h"
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static void
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tprintf_uffdio_range(const struct uffdio_range *range)
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{
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tprintf("{start=%#" PRI__x64 ", len=%#" PRI__x64 "}",
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range->start, range->len);
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}
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int
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uffdio_ioctl(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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switch (code) {
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case UFFDIO_API: {
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struct uffdio_api ua;
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if (entering(tcp)) {
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tprints(", ");
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if (umove_or_printaddr(tcp, arg, &ua))
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return RVAL_DECODED | 1;
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/* Features is intended to contain some flags, but
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* there aren't any defined yet.
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*/
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tprintf("{api=%#" PRI__x64
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", features=%#" PRI__x64,
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ua.api, ua.features);
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} else {
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if (!syserror(tcp) && !umove(tcp, arg, &ua)) {
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tprintf(", features.out=%#" PRI__x64
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", ioctls=", ua.features);
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printflags64(uffd_api_flags, ua.ioctls,
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"_UFFDIO_???");
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}
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tprints("}");
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}
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return 1;
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}
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case UFFDIO_COPY: {
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struct uffdio_copy uc;
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if (entering(tcp)) {
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tprints(", ");
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if (umove_or_printaddr(tcp, arg, &uc))
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return RVAL_DECODED | 1;
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tprintf("{dst=%#" PRI__x64 ", src=%#" PRI__x64
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", len=%#" PRI__x64 ", mode=",
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uc.dst, uc.src, uc.len);
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printflags64(uffd_copy_flags, uc.mode,
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"UFFDIO_COPY_???");
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} else {
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if (!syserror(tcp) && !umove(tcp, arg, &uc))
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tprintf(", copy=%#" PRI__x64, uc.copy);
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tprints("}");
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}
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return 1;
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}
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case UFFDIO_REGISTER: {
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struct uffdio_register ur;
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if (entering(tcp)) {
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tprints(", ");
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if (umove_or_printaddr(tcp, arg, &ur))
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return RVAL_DECODED | 1;
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tprints("{range=");
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tprintf_uffdio_range(&ur.range);
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tprints(", mode=");
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printflags64(uffd_register_mode_flags, ur.mode,
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"UFFDIO_REGISTER_MODE_???");
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} else {
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if (!syserror(tcp) && !umove(tcp, arg, &ur)) {
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tprints(", ioctls=");
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printflags64(uffd_register_ioctl_flags,
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ur.ioctls, "UFFDIO_???");
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}
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tprints("}");
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}
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return 1;
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}
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case UFFDIO_UNREGISTER:
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case UFFDIO_WAKE: {
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struct uffdio_range ura;
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tprints(", ");
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if (!umove_or_printaddr(tcp, arg, &ura))
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tprintf_uffdio_range(&ura);
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return RVAL_DECODED | 1;
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}
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case UFFDIO_ZEROPAGE: {
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struct uffdio_zeropage uz;
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if (entering(tcp)) {
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tprints(", ");
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if (umove_or_printaddr(tcp, arg, &uz))
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return RVAL_DECODED | 1;
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tprints("{range=");
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tprintf_uffdio_range(&uz.range);
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tprints(", mode=");
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printflags64(uffd_zeropage_flags, uz.mode,
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"UFFDIO_ZEROPAGE_???");
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} else {
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if (!syserror(tcp) && !umove(tcp, arg, &uz))
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tprintf(", zeropage=%#" PRI__x64, uz.zeropage);
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tprints("}");
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}
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return 1;
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}
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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_USERFAULTFD_H */
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