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

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