private bool Refresh(bool throwException)
{
int r = Native.Syscall.statvfs(mount_point, out stat);
if (r == -1 && throwException)
{
Native.Errno e = Native.Syscall.GetLastError();
throw new InvalidOperationException(
UnixMarshal.GetErrorDescription(e),
new UnixIOException(e));
}
else if (r == -1)
{
return(false);
}
return(true);
}
public UnixStream Open(Native.OpenFlags flags)
{
if ((flags & Native.OpenFlags.O_CREAT) != 0)
{
throw new ArgumentException(
"Cannot specify OpenFlags.O_CREAT without providing " +
"FilePermissions. Use the Open(OpenFlags, FilePermissions) " +
"method instead");
}
int fd = Native.Syscall.open(FullPath, flags);
if (fd < 0)
{
UnixMarshal.ThrowExceptionForLastError();
}
return(new UnixStream(fd));
}
public static String GetString(String s)
{
IntPtr ints = UnixMarshal.StringToHeap(s);
try {
// gettext(3) returns the input pointer if no translation is found
IntPtr r = gettext(ints);
if (r != ints)
{
return(UnixMarshal.PtrToStringUnix(r));
}
return(s);
}
finally {
UnixMarshal.FreeHeap(ints);
}
}
public Dirent[] GetEntries(Regex regex)
{
Dirent[] entries;
IntPtr intPtr = Syscall.opendir(base.FullPath);
if (intPtr == IntPtr.Zero)
{
UnixMarshal.ThrowExceptionForLastError();
}
try
{
entries = UnixDirectoryInfo.GetEntries(intPtr, regex);
}
finally
{
UnixMarshal.ThrowExceptionForLastErrorIf(Syscall.closedir(intPtr));
}
return(entries);
}
public override void SetLength(long value)
{
int num;
this.AssertNotDisposed();
if (value < (long)0)
{
throw new ArgumentOutOfRangeException("value", "< 0");
}
if (!this.CanSeek && !this.CanWrite)
{
throw new NotSupportedException("You can't truncating the current file descriptor");
}
do
{
num = Syscall.ftruncate(this.fileDescriptor, value);
}while (UnixMarshal.ShouldRetrySyscall(num));
UnixMarshal.ThrowExceptionForLastErrorIf(num);
}
public Native.Dirent[] GetEntries(Regex regex)
{
IntPtr dirp = Native.Syscall.opendir(FullPath);
if (dirp == IntPtr.Zero)
{
UnixMarshal.ThrowExceptionForLastError();
}
try
{
return(GetEntries(dirp, regex));
}
finally
{
int r = Native.Syscall.closedir(dirp);
UnixMarshal.ThrowExceptionForLastErrorIf(r);
}
}
private static IntPtr Fopen(string path, string mode)
{
if (path.Length == 0)
{
throw new ArgumentException("path");
}
if (mode == null)
{
throw new ArgumentNullException("mode");
}
IntPtr f = Native.Stdlib.fopen(path, mode);
if (f == IntPtr.Zero)
{
throw new DirectoryNotFoundException("path",
UnixMarshal.CreateExceptionForLastError());
}
return(f);
}
private static int GetStringByteLength(IntPtr p, Encoding encoding)
{
Type type = encoding.GetType();
int num = -1;
if (typeof(UTF8Encoding).IsAssignableFrom(type) || typeof(UTF7Encoding).IsAssignableFrom(type) || typeof(UnixEncoding).IsAssignableFrom(type) || typeof(ASCIIEncoding).IsAssignableFrom(type))
{
num = (void *)(checked ((int)Stdlib.strlen(p)));
}
else
{
num = (!typeof(UnicodeEncoding).IsAssignableFrom(type) ? UnixMarshal.GetRandomBufferLength(p, encoding.GetMaxByteCount(1)) : UnixMarshal.GetInt16BufferLength(p));
}
if (num == -1)
{
throw new NotSupportedException("Unable to determine native string buffer length");
}
return(num);
}
public override void SetLength(long value)
{
AssertNotDisposed();
if (value < 0)
{
throw new ArgumentOutOfRangeException("value", "< 0");
}
if (!CanSeek && !CanWrite)
{
throw new NotSupportedException("You can't truncating the current file descriptor");
}
int r;
do
{
r = Native.Syscall.ftruncate(fileDescriptor, value);
} while (UnixMarshal.ShouldRetrySyscall(r));
UnixMarshal.ThrowExceptionForLastErrorIf(r);
}
public static UnixFileSystemInfo GetFileSystemEntry(string path)
{
Stat stat;
int num = Syscall.lstat(path, out stat);
if (num == -1 && Stdlib.GetLastError() == Errno.ENOENT)
{
return(new UnixFileInfo(path));
}
UnixMarshal.ThrowExceptionForLastErrorIf(num);
if (UnixFileSystemInfo.IsFileType(stat.st_mode, FilePermissions.S_IFDIR))
{
return(new UnixDirectoryInfo(path, stat));
}
if (UnixFileSystemInfo.IsFileType(stat.st_mode, FilePermissions.S_IFLNK))
{
return(new UnixSymbolicLinkInfo(path, stat));
}
return(new UnixFileInfo(path, stat));
}
public override void Close()
{
int num;
if (this.fileDescriptor == -1)
{
return;
}
this.Flush();
if (!this.owner)
{
return;
}
do
{
num = Syscall.close(this.fileDescriptor);
}while (UnixMarshal.ShouldRetrySyscall(num));
UnixMarshal.ThrowExceptionForLastErrorIf(num);
this.fileDescriptor = -1;
GC.SuppressFinalize(this);
}
public static string GetConfigurationString(ConfstrName name)
{
ulong num = Syscall.confstr(name, null, (ulong)0);
if (num == (long)-1)
{
UnixMarshal.ThrowExceptionForLastError();
}
if (num == 0)
{
return(string.Empty);
}
StringBuilder stringBuilder = new StringBuilder((int)num + 1);
num = Syscall.confstr(name, stringBuilder, num);
if (num == (long)-1)
{
UnixMarshal.ThrowExceptionForLastError();
}
return(stringBuilder.ToString());
}
public static UnixFileSystemInfo GetFileSystemEntry(string path)
{
Native.Stat stat;
int r = Native.Syscall.lstat(path, out stat);
if (r == -1 && Native.Stdlib.GetLastError() == Native.Errno.ENOENT)
{
return(new UnixFileInfo(path));
}
UnixMarshal.ThrowExceptionForLastErrorIf(r);
if (IsFileType(stat.st_mode, Native.FilePermissions.S_IFDIR))
{
return(new UnixDirectoryInfo(path, stat));
}
else if (IsFileType(stat.st_mode, Native.FilePermissions.S_IFLNK))
{
return(new UnixSymbolicLinkInfo(path, stat));
}
return(new UnixFileInfo(path, stat));
}
public override void Close()
{
if (this.file == StdioFileStream.InvalidFileStream)
{
return;
}
if (!this.owner)
{
this.Flush();
}
else if (Stdlib.fclose(this.file) != 0)
{
UnixMarshal.ThrowExceptionForLastError();
}
this.file = StdioFileStream.InvalidFileStream;
this.canRead = false;
this.canSeek = false;
this.canWrite = false;
GC.SuppressFinalize(this);
GC.KeepAlive(this);
}
public static string GetConfigurationString(Native.ConfstrName name)
{
ulong len = Native.Syscall.confstr(name, null, 0);
if (len == unchecked ((ulong)(-1)))
{
UnixMarshal.ThrowExceptionForLastError();
}
if (len == 0)
{
return("");
}
StringBuilder buf = new StringBuilder((int)len + 1);
len = Native.Syscall.confstr(name, buf, len);
if (len == unchecked ((ulong)(-1)))
{
UnixMarshal.ThrowExceptionForLastError();
}
return(buf.ToString());
}
public static UnixUserInfo[] GetLocalUsers()
{
ArrayList arrayLists = new ArrayList();
object pwdLock = Syscall.pwd_lock;
Monitor.Enter(pwdLock);
try
{
if (Syscall.setpwent() != 0)
{
UnixMarshal.ThrowExceptionForLastError();
}
try
{
while (true)
{
Passwd passwd = Syscall.getpwent();
Passwd passwd1 = passwd;
if (passwd == null)
{
break;
}
arrayLists.Add(new UnixUserInfo(passwd1));
}
if ((int)Stdlib.GetLastError() != 0)
{
UnixMarshal.ThrowExceptionForLastError();
}
}
finally
{
Syscall.endpwent();
}
}
finally
{
Monitor.Exit(pwdLock);
}
return((UnixUserInfo[])arrayLists.ToArray(typeof(UnixUserInfo)));
}
public static IntPtr StringToHeap(string s, int index, int count, Encoding encoding)
{
if (s == null)
{
return(IntPtr.Zero);
}
if (encoding == null)
{
throw new ArgumentNullException("encoding");
}
int maxByteCount = encoding.GetMaxByteCount(1);
char[] charArray = s.ToCharArray(index, count);
byte[] numArray = new byte[encoding.GetByteCount(charArray) + maxByteCount];
if (encoding.GetBytes(charArray, 0, (int)charArray.Length, numArray, 0) != (int)numArray.Length - maxByteCount)
{
throw new NotSupportedException("encoding.GetBytes() doesn't equal encoding.GetByteCount()!");
}
IntPtr intPtr = UnixMarshal.AllocHeap((long)((int)numArray.Length));
if (intPtr == IntPtr.Zero)
{
throw new UnixIOException(Errno.ENOMEM);
}
bool flag = false;
try
{
Marshal.Copy(numArray, 0, intPtr, (int)numArray.Length);
flag = true;
}
finally
{
if (!flag)
{
UnixMarshal.FreeHeap(intPtr);
}
}
return(intPtr);
}
public static UnixGroupInfo[] GetLocalGroups()
{
ArrayList arrayLists = new ArrayList();
object grpLock = Syscall.grp_lock;
Monitor.Enter(grpLock);
try
{
if (Syscall.setgrent() != 0)
{
UnixMarshal.ThrowExceptionForLastError();
}
try
{
while (true)
{
Group group = Syscall.getgrent();
Group group1 = group;
if (group == null)
{
break;
}
arrayLists.Add(new UnixGroupInfo(group1));
}
if ((int)Stdlib.GetLastError() != 0)
{
UnixMarshal.ThrowExceptionForLastError();
}
}
finally
{
Syscall.endgrent();
}
}
finally
{
Monitor.Exit(grpLock);
}
return((UnixGroupInfo[])arrayLists.ToArray(typeof(UnixGroupInfo)));
}
public static string[] PtrToStringArray(int count, IntPtr stringArray, Encoding encoding)
{
if (count < 0)
{
throw new ArgumentOutOfRangeException("count", "< 0");
}
if (encoding == null)
{
throw new ArgumentNullException("encoding");
}
if (stringArray == IntPtr.Zero)
{
return(new string[count]);
}
string[] str = new string[count];
for (int i = 0; i < count; i++)
{
IntPtr intPtr = Marshal.ReadIntPtr(stringArray, i * IntPtr.Size);
str[i] = UnixMarshal.PtrToString(intPtr, encoding);
}
return(str);
}
public override long Seek(long offset, SeekOrigin origin)
{
AssertNotDisposed();
if (!CanSeek)
{
throw new NotSupportedException("The File Stream does not support seeking");
}
Native.SeekFlags sf = Native.SeekFlags.SEEK_CUR;
switch (origin)
{
case SeekOrigin.Begin: sf = Native.SeekFlags.SEEK_SET; break;
case SeekOrigin.Current: sf = Native.SeekFlags.SEEK_CUR; break;
case SeekOrigin.End: sf = Native.SeekFlags.SEEK_END; break;
default: throw new ArgumentException("origin");
}
int r = Native.Stdlib.fseek(file, offset, sf);
if (r != 0)
{
throw new IOException("Unable to seek",
UnixMarshal.CreateExceptionForLastError());
}
long pos = Native.Stdlib.ftell(file);
if (pos == -1)
{
throw new IOException("Unable to get current file position",
UnixMarshal.CreateExceptionForLastError());
}
GC.KeepAlive(this);
return(pos);
}
public void Delete(bool recursive)
{
if (recursive)
{
foreach (UnixFileSystemInfo e in GetFileSystemEntries())
{
UnixDirectoryInfo d = e as UnixDirectoryInfo;
if (d != null)
{
d.Delete(true);
}
else
{
e.Delete();
}
}
}
int r = Native.Syscall.rmdir(FullPath);
UnixMarshal.ThrowExceptionForLastErrorIf(r);
base.Refresh();
}
public void Delete(bool recursive)
{
if (recursive)
{
UnixFileSystemInfo[] fileSystemEntries = this.GetFileSystemEntries();
for (int i = 0; i < (int)fileSystemEntries.Length; i++)
{
UnixFileSystemInfo unixFileSystemInfo = fileSystemEntries[i];
UnixDirectoryInfo unixDirectoryInfo = unixFileSystemInfo as UnixDirectoryInfo;
if (unixDirectoryInfo == null)
{
unixFileSystemInfo.Delete();
}
else
{
unixDirectoryInfo.Delete(true);
}
}
}
UnixMarshal.ThrowExceptionForLastErrorIf(Syscall.rmdir(base.FullPath));
base.Refresh();
}
private static Dirent[] GetEntries(IntPtr dirp, Regex regex)
{
int num;
IntPtr intPtr;
ArrayList arrayLists = new ArrayList();
do
{
Dirent dirent = new Dirent();
num = Syscall.readdir_r(dirp, dirent, out intPtr);
if (num != 0 || !(intPtr != IntPtr.Zero) || !regex.Match(dirent.d_name).Success || !(dirent.d_name != ".") || !(dirent.d_name != ".."))
{
continue;
}
arrayLists.Add(dirent);
}while (num == 0 && intPtr != IntPtr.Zero);
if (num != 0)
{
UnixMarshal.ThrowExceptionForLastError();
}
return((Dirent[])arrayLists.ToArray(typeof(Dirent)));
}
public override unsafe void Write(byte[] buffer, int offset, int count)
{
AssertNotDisposed();
AssertValidBuffer(buffer, offset, count);
if (!CanWrite)
{
throw new NotSupportedException("File Stream does not support writing");
}
ulong r = 0;
fixed(byte *buf = &buffer[offset])
{
r = Native.Stdlib.fwrite(buf, (ulong)1, (ulong)count, file);
}
if (r != (ulong)count)
{
UnixMarshal.ThrowExceptionForLastError();
}
GC.KeepAlive(this);
}
public static string[] GetUserShells()
{
ArrayList shells = new ArrayList();
lock (Native.Syscall.usershell_lock) {
try {
if (Native.Syscall.setusershell() != 0)
{
UnixMarshal.ThrowExceptionForLastError();
}
string shell;
while ((shell = Native.Syscall.getusershell()) != null)
{
shells.Add(shell);
}
}
finally {
Native.Syscall.endusershell();
}
}
return((string[])shells.ToArray(typeof(string)));
}
public override void Write(byte[] buffer, int offset, int count)
{
unsafe
{
this.AssertNotDisposed();
this.AssertValidBuffer(buffer, offset, count);
if (!this.CanWrite)
{
throw new NotSupportedException("File Stream does not support writing");
}
ulong num = (ulong)0;
fixed(byte *numPointer = &buffer[offset])
{
num = Stdlib.fwrite(numPointer, (ulong)1, (ulong)count, this.file);
}
if (num != (long)count)
{
UnixMarshal.ThrowExceptionForLastError();
}
GC.KeepAlive(this);
}
}
public override long Seek(long offset, SeekOrigin origin)
{
this.AssertNotDisposed();
if (!this.CanSeek)
{
throw new NotSupportedException("The File Descriptor does not support seeking");
}
SeekFlags seekFlag = SeekFlags.SEEK_CUR;
switch (origin)
{
case SeekOrigin.Begin:
{
seekFlag = SeekFlags.SEEK_SET;
break;
}
case SeekOrigin.Current:
{
seekFlag = SeekFlags.SEEK_CUR;
break;
}
case SeekOrigin.End:
{
seekFlag = SeekFlags.SEEK_END;
break;
}
}
long num = Syscall.lseek(this.fileDescriptor, offset, seekFlag);
if (num == (long)-1)
{
UnixMarshal.ThrowExceptionForLastError();
}
return(num);
}
public static String GetPluralString(String s, String p, Int32 n)
{
IntPtr ints, intp, _ignore;
MarshalStrings(s, out ints, p, out intp, null, out _ignore);
try {
// ngettext(3) returns an input pointer if no translation is found
IntPtr r = ngettext(ints, intp, n);
if (r == ints)
{
return(s);
}
if (r == intp)
{
return(p);
}
return(UnixMarshal.PtrToStringUnix(r));
}
finally {
UnixMarshal.FreeHeap(ints);
UnixMarshal.FreeHeap(intp);
}
}
public override void Close()
{
if (fileDescriptor == InvalidFileDescriptor)
{
return;
}
Flush();
if (!owner)
{
return;
}
int r;
do
{
r = Native.Syscall.close(fileDescriptor);
} while (UnixMarshal.ShouldRetrySyscall(r));
UnixMarshal.ThrowExceptionForLastErrorIf(r);
fileDescriptor = InvalidFileDescriptor;
GC.SuppressFinalize(this);
}
public static string PtrToString(IntPtr p, Encoding encoding)
{
if (p == IntPtr.Zero)
{
return(null);
}
if (encoding == null)
{
throw new ArgumentNullException("encoding");
}
int stringByteLength = UnixMarshal.GetStringByteLength(p, encoding);
string str = new string((void *)p, 0, stringByteLength, encoding);
stringByteLength = str.Length;
while (stringByteLength > 0 && str[stringByteLength - 1] == 0)
{
stringByteLength--;
}
if (stringByteLength == str.Length)
{
return(str);
}
return(str.Substring(0, stringByteLength));
}
