1  /* Convert between the kernel's `struct stat' format, and libc's.
       2     Copyright (C) 1997-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library.  If not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <errno.h>
      20  #include <string.h>
      21  #include <sys/stat.h>
      22  #include <kernel_stat.h>
      23  #include <xstatconv.h>
      24  #include <sys/syscall.h>
      25  
      26  int
      27  __xstat_conv (int vers, struct kernel_stat *kbuf, void *ubuf)
      28  {
      29    switch (vers)
      30      {
      31      case _STAT_VER_KERNEL:
      32        *(struct kernel_stat *) ubuf = *kbuf;
      33        break;
      34  
      35      case _STAT_VER_GLIBC2:
      36        {
      37  	struct glibc2_stat *buf = ubuf;
      38  
      39  	buf->st_dev = kbuf->st_dev;
      40  	buf->st_ino = kbuf->st_ino;
      41  	buf->st_mode = kbuf->st_mode;
      42  	buf->st_nlink = kbuf->st_nlink;
      43  	buf->st_uid = kbuf->st_uid;
      44  	buf->st_gid = kbuf->st_gid;
      45  	buf->st_rdev = kbuf->st_rdev;
      46  	buf->st_size = kbuf->st_size;
      47  	buf->st_atime_sec = kbuf->st_atime_sec;
      48  	buf->st_mtime_sec = kbuf->st_mtime_sec;
      49  	buf->st_ctime_sec = kbuf->st_ctime_sec;
      50  	buf->st_blksize = kbuf->st_blksize;
      51  	buf->st_blocks = kbuf->st_blocks;
      52  	buf->st_flags = kbuf->st_flags;
      53  	buf->st_gen = kbuf->st_gen;
      54        }
      55        break;
      56  
      57      case _STAT_VER_GLIBC2_1:
      58        {
      59  	struct glibc21_stat *buf = ubuf;
      60  
      61  	buf->st_dev = kbuf->st_dev;
      62  	buf->st_ino = kbuf->st_ino;
      63  	buf->st_mode = kbuf->st_mode;
      64  	buf->st_nlink = kbuf->st_nlink;
      65  	buf->st_uid = kbuf->st_uid;
      66  	buf->st_gid = kbuf->st_gid;
      67  	buf->st_rdev = kbuf->st_rdev;
      68  	buf->st_size = kbuf->st_size;
      69  	buf->st_atime_sec = kbuf->st_atime_sec;
      70  	buf->st_mtime_sec = kbuf->st_mtime_sec;
      71  	buf->st_ctime_sec = kbuf->st_ctime_sec;
      72  	buf->st_blocks = kbuf->st_blocks;
      73  	buf->st_blksize = kbuf->st_blksize;
      74  	buf->st_flags = kbuf->st_flags;
      75  	buf->st_gen = kbuf->st_gen;
      76  	buf->__pad3 = 0;
      77  	buf->__glibc_reserved[0] = 0;
      78  	buf->__glibc_reserved[1] = 0;
      79  	buf->__glibc_reserved[2] = 0;
      80  	buf->__glibc_reserved[3] = 0;
      81        }
      82        break;
      83  
      84      case _STAT_VER_GLIBC2_3_4:
      85        {
      86  	struct stat64 *buf = ubuf;
      87  
      88  	buf->st_dev = kbuf->st_dev;
      89  	buf->st_ino = kbuf->st_ino;
      90  	buf->st_rdev = kbuf->st_rdev;
      91  	buf->st_size = kbuf->st_size;
      92  	buf->st_blocks = kbuf->st_blocks;
      93  
      94  	buf->st_mode = kbuf->st_mode;
      95  	buf->st_uid = kbuf->st_uid;
      96  	buf->st_gid = kbuf->st_gid;
      97  	buf->st_blksize = kbuf->st_blksize;
      98  	buf->st_nlink = kbuf->st_nlink;
      99  	buf->__pad0 = 0;
     100  
     101  	buf->st_atim.tv_sec = kbuf->st_atime_sec;
     102  	buf->st_atim.tv_nsec = 0;
     103  	buf->st_mtim.tv_sec = kbuf->st_mtime_sec;
     104  	buf->st_mtim.tv_nsec = 0;
     105  	buf->st_ctim.tv_sec = kbuf->st_ctime_sec;
     106  	buf->st_ctim.tv_nsec = 0;
     107  
     108  	buf->__glibc_reserved[0] = 0;
     109  	buf->__glibc_reserved[1] = 0;
     110  	buf->__glibc_reserved[2] = 0;
     111        }
     112        break;
     113  
     114      default:
     115        __set_errno (EINVAL);
     116        return -1;
     117      }
     118  
     119    return 0;
     120  }