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glibc  2.9
Functions
xstatconv.c File Reference
#include <assert.h>
#include <errno.h>
#include <sys/stat.h>
#include <kernel_stat.h>
#include <string.h>
#include <kernel-features.h>

Go to the source code of this file.

Functions

int __xstat_conv (int vers, struct kernel_stat *kbuf, void *ubuf)
int __xstat32_conv (int vers, struct stat64 *sbuf, struct stat *buf)

Function Documentation

int __xstat32_conv ( int  vers,
struct stat64 sbuf,
struct stat buf 
)

Definition at line 77 of file xstatconv.c.

{
  struct kernel_stat64 *kbuf;

  /* *stat64 syscalls on sparc64 really fill in struct kernel_stat64,
     rather than struct stat64.  But it is the same size as
     struct kernel_stat64, so use this hack so that we can reuse
     i386 {,f,l}xstat{,at}.c routines.  */
  __asm ("" : "=r" (kbuf) : "0" (sbuf));
  assert (sizeof (struct stat) == sizeof (struct stat64));
  assert (sizeof (struct stat64) >= sizeof (struct kernel_stat64));

  switch (vers)
    {
    case _STAT_VER_LINUX:
      {
       /* Convert current kernel version of `struct stat64' to
           `struct stat'.  */
       buf->st_dev = kbuf->st_dev;
       buf->__pad1 = 0;
       buf->st_ino = kbuf->st_ino;
       buf->st_mode = kbuf->st_mode;
       buf->st_nlink = kbuf->st_nlink;
       buf->st_uid = kbuf->st_uid;
       buf->st_gid = kbuf->st_gid;
       buf->st_rdev = kbuf->st_rdev;
       buf->__pad2 = 0;
       buf->st_size = kbuf->st_size;
       buf->st_blksize = kbuf->st_blksize;
       buf->st_blocks = kbuf->st_blocks;
       buf->st_atim.tv_sec = kbuf->st_atime_sec;
       buf->st_atim.tv_nsec = kbuf->st_atime_nsec;
       buf->st_mtim.tv_sec = kbuf->st_mtime_sec;
       buf->st_mtim.tv_nsec = kbuf->st_mtime_nsec;
       buf->st_ctim.tv_sec = kbuf->st_ctime_sec;
       buf->st_ctim.tv_nsec = kbuf->st_ctime_nsec;
       buf->__unused4 = 0;
       buf->__unused5 = 0;
      }
      break;

      /* If struct stat64 is different from struct stat then
        _STAT_VER_KERNEL does not make sense.  */
    case _STAT_VER_KERNEL:
    default:
      __set_errno (EINVAL);
      return -1;
    }

  return 0;
}

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int __xstat_conv ( int  vers,
struct kernel_stat kbuf,
void *  ubuf 
)

Definition at line 29 of file xstatconv.c.

{
  switch (vers)
    {
    case _STAT_VER_KERNEL:
      /* Nothing to do.  The struct is in the form the kernel expects.
         We should have short-circuted before we got here, but for
         completeness... */
      *(struct kernel_stat *) ubuf = *kbuf;
      break;

    case _STAT_VER_LINUX:
      {
       struct stat *buf = ubuf;

       /* Convert to current kernel version of `struct stat'.  */
       buf->st_dev = kbuf->st_dev;
       buf->__pad1 = 0;
       buf->st_ino = kbuf->st_ino;
       buf->st_mode = kbuf->st_mode;
       buf->st_nlink = kbuf->st_nlink;
       buf->st_uid = kbuf->st_uid;
       buf->st_gid = kbuf->st_gid;
       buf->st_rdev = kbuf->st_rdev;
       buf->__pad2 = 0;
       buf->st_size = kbuf->st_size;
       buf->st_blksize = kbuf->st_blksize;
       buf->st_blocks = kbuf->st_blocks;
       buf->st_atim.tv_sec = kbuf->st_atime_sec;
       buf->st_atim.tv_nsec = 0;
       buf->st_mtim.tv_sec = kbuf->st_mtime_sec;
       buf->st_mtim.tv_nsec = 0;
       buf->st_ctim.tv_sec = kbuf->st_ctime_sec;
       buf->st_ctim.tv_nsec = 0;
       buf->__unused4 = 0;
       buf->__unused5 = 0;
      }
      break;

    default:
      __set_errno (EINVAL);
      return -1;
    }

  return 0;
}