1  /*
       2   * Copyright (c) 2014-2016 Dmitry V. Levin <ldv@strace.io>
       3   * Copyright (c) 2016-2021 The strace developers.
       4   * All rights reserved.
       5   *
       6   * SPDX-License-Identifier: LGPL-2.1-or-later
       7   */
       8  
       9  #include "defs.h"
      10  
      11  #include DEF_MPERS_TYPE(struct_stat)
      12  
      13  #include "asm_stat.h"
      14  
      15  #if defined MPERS_IS_m32
      16  # undef HAVE_STRUCT_STAT
      17  # undef HAVE_STRUCT_STAT_ST_MTIME_NSEC
      18  # ifdef HAVE_M32_STRUCT_STAT
      19  #  define HAVE_STRUCT_STAT 1
      20  #  ifdef HAVE_M32_STRUCT_STAT_ST_MTIME_NSEC
      21  #   define HAVE_STRUCT_STAT_ST_MTIME_NSEC 1
      22  #  endif /* HAVE_M32_STRUCT_STAT_ST_MTIME_NSEC */
      23  # endif /* HAVE_M32_STRUCT_STAT */
      24  #elif defined MPERS_IS_mx32
      25  # undef HAVE_STRUCT_STAT
      26  # undef HAVE_STRUCT_STAT_ST_MTIME_NSEC
      27  # ifdef HAVE_MX32_STRUCT_STAT
      28  #  define HAVE_STRUCT_STAT 1
      29  #  ifdef HAVE_MX32_STRUCT_STAT_ST_MTIME_NSEC
      30  #   define HAVE_STRUCT_STAT_ST_MTIME_NSEC 1
      31  #  endif /* HAVE_MX32_STRUCT_STAT_ST_MTIME_NSEC */
      32  # endif /* HAVE_MX32_STRUCT_STAT */
      33  #else /* !MPERS_IS_m32 && !MPERS_IS_mx32 */
      34  # define HAVE_STRUCT_STAT 1
      35  #endif
      36  
      37  #ifndef HAVE_STRUCT_STAT
      38  struct stat {};
      39  #endif
      40  
      41  typedef struct stat struct_stat;
      42  
      43  #include MPERS_DEFS
      44  
      45  #include "stat.h"
      46  
      47  #ifdef HAVE_STRUCT_STAT_ST_MTIME_NSEC
      48  # define TIME_NSEC(arg) zero_extend_signed_to_ull(arg)
      49  # define HAVE_NSEC true
      50  #else
      51  # define TIME_NSEC(arg) 0
      52  # define HAVE_NSEC false
      53  #endif
      54  
      55  MPERS_PRINTER_DECL(bool, fetch_struct_stat,
      56  		   struct tcb *const tcp, const kernel_ulong_t addr,
      57  		   struct strace_stat *const dst)
      58  {
      59  #ifdef HAVE_STRUCT_STAT
      60  	struct_stat buf;
      61  	if (umove_or_printaddr(tcp, addr, &buf))
      62  		return false;
      63  
      64  	dst->dev = zero_extend_signed_to_ull(buf.st_dev);
      65  	dst->ino = zero_extend_signed_to_ull(buf.st_ino);
      66  	dst->rdev = zero_extend_signed_to_ull(buf.st_rdev);
      67  	dst->size = zero_extend_signed_to_ull(buf.st_size);
      68  	dst->blocks = zero_extend_signed_to_ull(buf.st_blocks);
      69  	dst->blksize = zero_extend_signed_to_ull(buf.st_blksize);
      70  	dst->mode = zero_extend_signed_to_ull(buf.st_mode);
      71  	dst->nlink = zero_extend_signed_to_ull(buf.st_nlink);
      72  	dst->uid = zero_extend_signed_to_ull(buf.st_uid);
      73  	dst->gid = zero_extend_signed_to_ull(buf.st_gid);
      74  	dst->atime = sign_extend_unsigned_to_ll(buf.st_atime);
      75  	dst->ctime = sign_extend_unsigned_to_ll(buf.st_ctime);
      76  	dst->mtime = sign_extend_unsigned_to_ll(buf.st_mtime);
      77  	dst->atime_nsec = TIME_NSEC(buf.st_atime_nsec);
      78  	dst->ctime_nsec = TIME_NSEC(buf.st_ctime_nsec);
      79  	dst->mtime_nsec = TIME_NSEC(buf.st_mtime_nsec);
      80  	dst->has_nsec = HAVE_NSEC;
      81  	return true;
      82  #else /* !HAVE_STRUCT_STAT */
      83  	printaddr(addr);
      84  	return false;
      85  #endif
      86  }