granicus.if.org Git - strace/blob - fetch_struct_stat64.c

   1 /*
   2  * Copyright (c) 2014-2016 Dmitry V. Levin <ldv@altlinux.org>
   3  * Copyright (c) 2016-2017 The strace developers.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include "defs.h"
  30
  31 #include DEF_MPERS_TYPE(struct_stat64)
  32
  33 #include "asm_stat.h"
  34
  35 #if defined MPERS_IS_m32
  36 # undef HAVE_STRUCT_STAT64
  37 # undef HAVE_STRUCT_STAT64_ST_MTIME_NSEC
  38 # ifdef HAVE_M32_STRUCT_STAT64
  39 #  define HAVE_STRUCT_STAT64 1
  40 #  ifdef HAVE_M32_STRUCT_STAT64_ST_MTIME_NSEC
  41 #   define HAVE_STRUCT_STAT64_ST_MTIME_NSEC 1
  42 #  endif /* HAVE_M32_STRUCT_STAT64_ST_MTIME_NSEC */
  43 # endif /* HAVE_M32_STRUCT_STAT64 */
  44 #elif defined MPERS_IS_mx32
  45 # undef HAVE_STRUCT_STAT64
  46 # undef HAVE_STRUCT_STAT64_ST_MTIME_NSEC
  47 # ifdef HAVE_MX32_STRUCT_STAT64
  48 #  define HAVE_STRUCT_STAT64 1
  49 #  ifdef HAVE_MX32_STRUCT_STAT64_ST_MTIME_NSEC
  50 #   define HAVE_STRUCT_STAT64_ST_MTIME_NSEC 1
  51 #  endif /* HAVE_MX32_STRUCT_STAT64_ST_MTIME_NSEC */
  52 # endif /* HAVE_MX32_STRUCT_STAT64 */
  53 #endif /* MPERS_IS_m32 || MPERS_IS_mx32 */
  54
  55 #ifndef HAVE_STRUCT_STAT64
  56 struct stat64 {};
  57 #endif
  58
  59 typedef struct stat64 struct_stat64;
  60
  61 #include MPERS_DEFS
  62
  63 #include "stat.h"
  64
  65 #ifdef HAVE_STRUCT_STAT64_ST_MTIME_NSEC
  66 # define TIME_NSEC(arg) zero_extend_signed_to_ull(arg)
  67 # define HAVE_NSEC true
  68 #else
  69 # define TIME_NSEC(arg) 0
  70 # define HAVE_NSEC false
  71 #endif
  72
  73 MPERS_PRINTER_DECL(bool, fetch_struct_stat64,
  74                    struct tcb *const tcp, const kernel_ulong_t addr,
  75                    struct strace_stat *const dst)
  76 {
  77 #ifdef HAVE_STRUCT_STAT64
  78         struct_stat64 buf;
  79         if (umove_or_printaddr(tcp, addr, &buf))
  80                 return false;
  81
  82         dst->dev = zero_extend_signed_to_ull(buf.st_dev);
  83         dst->ino = zero_extend_signed_to_ull(buf.st_ino);
  84         dst->rdev = zero_extend_signed_to_ull(buf.st_rdev);
  85         dst->size = zero_extend_signed_to_ull(buf.st_size);
  86         dst->blocks = zero_extend_signed_to_ull(buf.st_blocks);
  87         dst->blksize = zero_extend_signed_to_ull(buf.st_blksize);
  88         dst->mode = zero_extend_signed_to_ull(buf.st_mode);
  89         dst->nlink = zero_extend_signed_to_ull(buf.st_nlink);
  90         dst->uid = zero_extend_signed_to_ull(buf.st_uid);
  91         dst->gid = zero_extend_signed_to_ull(buf.st_gid);
  92         dst->atime = sign_extend_unsigned_to_ll(buf.st_atime);
  93         dst->ctime = sign_extend_unsigned_to_ll(buf.st_ctime);
  94         dst->mtime = sign_extend_unsigned_to_ll(buf.st_mtime);
  95         dst->atime_nsec = TIME_NSEC(buf.st_atime_nsec);
  96         dst->ctime_nsec = TIME_NSEC(buf.st_ctime_nsec);
  97         dst->mtime_nsec = TIME_NSEC(buf.st_mtime_nsec);
  98         dst->has_nsec = HAVE_NSEC;
  99         return true;
 100 #else /* !HAVE_STRUCT_STAT64 */
 101         printaddr(addr);
 102         return false;
 103 #endif
 104 }