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fetch_struct_statfs.c
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/*
* Copyright (c) 2014-2016 Dmitry V. Levin <[email protected]>
* Copyright (c) 2016-2017 The strace developers.
* 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"
#include DEF_MPERS_TYPE(struct_statfs)
#include DEF_MPERS_TYPE(struct_statfs64)
#include <linux/types.h>
#include <asm/statfs.h>
typedef struct statfs struct_statfs;
typedef struct statfs64 struct_statfs64;
#include MPERS_DEFS
#include "statfs.h"
MPERS_PRINTER_DECL(bool, fetch_struct_statfs,
struct tcb *const tcp, const kernel_ulong_t addr,
struct strace_statfs *const p)
{
struct_statfs b;
if (umove_or_printaddr(tcp, addr, &b))
return false;
p->f_type = zero_extend_signed_to_ull(b.f_type);
p->f_bsize = zero_extend_signed_to_ull(b.f_bsize);
p->f_blocks = zero_extend_signed_to_ull(b.f_blocks);
p->f_bfree = zero_extend_signed_to_ull(b.f_bfree);
p->f_bavail = zero_extend_signed_to_ull(b.f_bavail);
p->f_files = zero_extend_signed_to_ull(b.f_files);
p->f_ffree = zero_extend_signed_to_ull(b.f_ffree);
#if defined HAVE_STRUCT_STATFS_F_FSID_VAL
p->f_fsid[0] = zero_extend_signed_to_ull(b.f_fsid.val[0]);
p->f_fsid[1] = zero_extend_signed_to_ull(b.f_fsid.val[1]);
#elif defined HAVE_STRUCT_STATFS_F_FSID___VAL
p->f_fsid[0] = zero_extend_signed_to_ull(b.f_fsid.__val[0]);
p->f_fsid[1] = zero_extend_signed_to_ull(b.f_fsid.__val[1]);
#endif
p->f_namelen = zero_extend_signed_to_ull(b.f_namelen);
#ifdef HAVE_STRUCT_STATFS_F_FRSIZE
p->f_frsize = zero_extend_signed_to_ull(b.f_frsize);
#endif
#ifdef HAVE_STRUCT_STATFS_F_FLAGS
p->f_flags = zero_extend_signed_to_ull(b.f_flags);
#endif
return true;
}
#if defined ARM || (defined AARCH64 && defined IN_MPERS)
/* See arch/arm/kernel/sys_oabi-compat.c for details. */
# define COMPAT_STATFS64_PADDED_SIZE (sizeof(struct_statfs64) + 4)
#endif
MPERS_PRINTER_DECL(bool, fetch_struct_statfs64,
struct tcb *const tcp, const kernel_ulong_t addr,
const kernel_ulong_t size, struct strace_statfs *const p)
{
struct_statfs64 b;
if (sizeof(b) != size
#ifdef COMPAT_STATFS64_PADDED_SIZE
&& sizeof(b) != COMPAT_STATFS64_PADDED_SIZE
#endif
) {
printaddr(addr);
return false;
}
if (umove_or_printaddr(tcp, addr, &b))
return false;
p->f_type = zero_extend_signed_to_ull(b.f_type);
p->f_bsize = zero_extend_signed_to_ull(b.f_bsize);
p->f_blocks = zero_extend_signed_to_ull(b.f_blocks);
p->f_bfree = zero_extend_signed_to_ull(b.f_bfree);
p->f_bavail = zero_extend_signed_to_ull(b.f_bavail);
p->f_files = zero_extend_signed_to_ull(b.f_files);
p->f_ffree = zero_extend_signed_to_ull(b.f_ffree);
#if defined HAVE_STRUCT_STATFS64_F_FSID_VAL
p->f_fsid[0] = zero_extend_signed_to_ull(b.f_fsid.val[0]);
p->f_fsid[1] = zero_extend_signed_to_ull(b.f_fsid.val[1]);
#elif defined HAVE_STRUCT_STATFS64_F_FSID___VAL
p->f_fsid[0] = zero_extend_signed_to_ull(b.f_fsid.__val[0]);
p->f_fsid[1] = zero_extend_signed_to_ull(b.f_fsid.__val[1]);
#endif
p->f_namelen = zero_extend_signed_to_ull(b.f_namelen);
#ifdef HAVE_STRUCT_STATFS64_F_FRSIZE
p->f_frsize = zero_extend_signed_to_ull(b.f_frsize);
#endif
#ifdef HAVE_STRUCT_STATFS64_F_FLAGS
p->f_flags = zero_extend_signed_to_ull(b.f_flags);
#endif
return true;
}