/// <inheritdoc/>
protected override StatInfo Stat(bool flushCache)
{
if (_cachedStat != null && !flushCache)
{
return(_cachedStat);
}
// http://www.delorie.com/gnu/docs/glibc/libc_284.html
var info = new FileInfo(PurePath.ToString());
var stat = new StatInfo
{
Size = info.Length,
ATime = info.LastAccessTimeUtc,
MTime = info.LastWriteTimeUtc,
CTime = info.CreationTimeUtc,
Device = 0,
Inode = 0,
Gid = 0,
Uid = 0,
Mode = 0 // TODO not implemented
};
_cachedStat = stat;
return(stat);
}
/// <inheritdoc/>
protected override StatInfo Stat(bool flushCache)
{
if (_cachedStat != null && !flushCache)
{
return(_cachedStat);
}
var path = PurePath.ToString();
var err = Posix.Native.stat64(path, out var info);
if (err != 0)
{
var actualError = Marshal.GetLastWin32Error();
if (actualError == 2)
{
throw new FileNotFoundException("Cannot stat file that does not exist.", path);
}
throw new ApplicationException("Error: " + actualError);
}
var epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
var atim = epoch.AddSeconds(info.st_atim.tv_sec);
if (info.st_atim.tv_nsec != 0)
{
atim = atim.AddTicks((long)(info.st_atim.tv_nsec / 100));
}
var mtim = epoch.AddSeconds(info.st_mtim.tv_sec);
if (info.st_mtim.tv_nsec != 0)
{
mtim = mtim.AddTicks((long)(info.st_mtim.tv_nsec / 100));
}
var ctim = epoch.AddSeconds(info.st_ctim.tv_sec);
if (info.st_ctim.tv_nsec != 0)
{
ctim = ctim.AddTicks((long)(info.st_ctim.tv_nsec / 100));
}
var stat = new StatInfo
{
Size = info.st_size,
ATime = atim,
MTime = mtim,
CTime = ctim,
Device = (long)info.st_dev,
Inode = (long)info.st_ino,
Gid = info.st_uid,
Uid = info.st_gid,
ModeDecimal = info.st_mode,
Mode = Convert.ToString(info.st_mode & (Native.SetBits | Native.UserBits | Native.GroupBits | Native.OtherBits), 8).PadLeft(4, '0'),
NumLinks = (long)info.st_nlink
};
try
{
_cachedStat = stat;
}
// Yes, this assignment throws a NRE if the struct alignment for pinvoke is wrong.
// It overwrites 'this' in the stack with null.
catch (NullReferenceException e)
{
throw new NotImplementedException("Layout of stat call not supported on this platform (Only supports Ubuntu x86_64 and anything compatible).", e);
}
return(stat);
}
