mcs/class/Mono.Posix/Mono.Unix.Native/NativeConvert.cs

   1 /*
   2  * This file was automatically generated by make-map from Mono.Posix.dll.
   3  *
   4  * DO NOT MODIFY.
   5  */
   6
   7 using System;
   8 using System.IO;
   9 using System.Runtime.InteropServices;
  10 using Mono.Unix.Native;
  11
  12 namespace Mono.Unix.Native {
  13
  14         [CLSCompliant (false)]
  15         public sealed /* static */ partial class NativeConvert
  16         {
  17                 //
  18                 // Non-generated exports
  19                 //
  20 #if !MONODROID
  21                 [DllImport (LIB, EntryPoint="Mono_Posix_FromRealTimeSignum")]
  22                 private static extern int FromRealTimeSignum (Int32 offset, out Int32 rval);
  23 #endif
  24                 // convert a realtime signal to os signal
  25                 public static int FromRealTimeSignum (RealTimeSignum sig)
  26                 {
  27                         int sigNum;
  28                         if (FromRealTimeSignum (sig.Offset, out sigNum) == -1)
  29                                 ThrowArgumentException (sig.Offset);
  30                         return sigNum;
  31                 }
  32
  33                 // convert an offset to an rt signum
  34                 public static RealTimeSignum ToRealTimeSignum (int offset)
  35                 {
  36                         return new RealTimeSignum (offset);
  37                 }
  38
  39                 // convert from octal representation.
  40                 public static FilePermissions FromOctalPermissionString (string value)
  41                 {
  42                         uint n = Convert.ToUInt32 (value, 8);
  43                         return ToFilePermissions (n);
  44                 }
  45
  46                 public static string ToOctalPermissionString (FilePermissions value)
  47                 {
  48                         string s = Convert.ToString ((int) (value & ~FilePermissions.S_IFMT), 8);
  49                         return new string ('0', 4-s.Length) + s;
  50                 }
  51
  52                 public static FilePermissions FromUnixPermissionString (string value)
  53                 {
  54                         if (value == null)
  55                                 throw new ArgumentNullException ("value");
  56                         if (value.Length != 9 && value.Length != 10)
  57                                 throw new ArgumentException ("value", "must contain 9 or 10 characters");
  58
  59                         int i = 0;
  60                         FilePermissions perms = new FilePermissions ();
  61
  62                         if (value.Length == 10) {
  63                                 perms |= GetUnixPermissionDevice (value [i]);
  64                                 ++i;
  65                         }
  66
  67                         perms |= GetUnixPermissionGroup (
  68                                 value [i++], FilePermissions.S_IRUSR,
  69                                 value [i++], FilePermissions.S_IWUSR,
  70                                 value [i++], FilePermissions.S_IXUSR,
  71                                 's', 'S', FilePermissions.S_ISUID);
  72
  73                         perms |= GetUnixPermissionGroup (
  74                                 value [i++], FilePermissions.S_IRGRP,
  75                                 value [i++], FilePermissions.S_IWGRP,
  76                                 value [i++], FilePermissions.S_IXGRP,
  77                                 's', 'S', FilePermissions.S_ISGID);
  78
  79                         perms |= GetUnixPermissionGroup (
  80                                 value [i++], FilePermissions.S_IROTH,
  81                                 value [i++], FilePermissions.S_IWOTH,
  82                                 value [i++], FilePermissions.S_IXOTH,
  83                                 't', 'T', FilePermissions.S_ISVTX);
  84
  85                         return perms;
  86                 }
  87
  88                 private static FilePermissions GetUnixPermissionDevice (char value)
  89                 {
  90                         switch (value) {
  91                         case 'd': return FilePermissions.S_IFDIR;
  92                         case 'c': return FilePermissions.S_IFCHR;
  93                         case 'b': return FilePermissions.S_IFBLK;
  94                         case '-': return FilePermissions.S_IFREG;
  95                         case 'p': return FilePermissions.S_IFIFO;
  96                         case 'l': return FilePermissions.S_IFLNK;
  97                         case 's': return FilePermissions.S_IFSOCK;
  98                         }
  99                         throw new ArgumentException ("value", "invalid device specification: " +
 100                                 value);
 101                 }
 102
 103                 private static FilePermissions GetUnixPermissionGroup (
 104                         char read, FilePermissions readb,
 105                         char write, FilePermissions writeb,
 106                         char exec, FilePermissions execb,
 107                         char xboth, char xbitonly, FilePermissions xbit)
 108                 {
 109                         FilePermissions perms = new FilePermissions ();
 110                         if (read == 'r')
 111                                 perms |= readb;
 112                         if (write == 'w')
 113                                 perms |= writeb;
 114                         if (exec == 'x')
 115                                 perms |= execb;
 116                         else if (exec == xbitonly)
 117                                 perms |= xbit;
 118                         else if (exec == xboth)
 119                                 perms |= (execb | xbit);
 120                         return perms;
 121                 }
 122
 123                 // Create ls(1) drwxrwxrwx permissions display
 124                 public static string ToUnixPermissionString (FilePermissions value)
 125                 {
 126                         char [] access = new char[] {
 127                                 '-',            // device
 128                                 '-', '-', '-',  // owner
 129                                 '-', '-', '-',  // group
 130                                 '-', '-', '-',  // other
 131                         };
 132                         bool have_device = true;
 133                         switch (value & FilePermissions.S_IFMT) {
 134                                 case FilePermissions.S_IFDIR:   access [0] = 'd'; break;
 135                                 case FilePermissions.S_IFCHR:   access [0] = 'c'; break;
 136                                 case FilePermissions.S_IFBLK:   access [0] = 'b'; break;
 137                                 case FilePermissions.S_IFREG:   access [0] = '-'; break;
 138                                 case FilePermissions.S_IFIFO:   access [0] = 'p'; break;
 139                                 case FilePermissions.S_IFLNK:   access [0] = 'l'; break;
 140                                 case FilePermissions.S_IFSOCK:  access [0] = 's'; break;
 141                                 default:                        have_device = false; break;
 142                         }
 143                         SetUnixPermissionGroup (value, access, 1,
 144                                 FilePermissions.S_IRUSR, FilePermissions.S_IWUSR, FilePermissions.S_IXUSR,
 145                                 's', 'S', FilePermissions.S_ISUID);
 146                         SetUnixPermissionGroup (value, access, 4,
 147                                 FilePermissions.S_IRGRP, FilePermissions.S_IWGRP, FilePermissions.S_IXGRP,
 148                                 's', 'S', FilePermissions.S_ISGID);
 149                         SetUnixPermissionGroup (value, access, 7,
 150                                 FilePermissions.S_IROTH, FilePermissions.S_IWOTH, FilePermissions.S_IXOTH,
 151                                 't', 'T', FilePermissions.S_ISVTX);
 152                         return have_device
 153                                 ? new string (access)
 154                                 : new string (access, 1, 9);
 155                 }
 156
 157                 private static void SetUnixPermissionGroup (FilePermissions value,
 158                         char[] access, int index,
 159                         FilePermissions read, FilePermissions write, FilePermissions exec,
 160                         char both, char setonly, FilePermissions setxbit)
 161                 {
 162                         if (UnixFileSystemInfo.IsSet (value, read))
 163                                 access [index] = 'r';
 164                         if (UnixFileSystemInfo.IsSet (value, write))
 165                                 access [index+1] = 'w';
 166                         access [index+2] = GetSymbolicMode (value, exec, both, setonly, setxbit);
 167                 }
 168
 169                 // Implement the GNU ls(1) permissions spec; see `info coreutils ls`,
 170                 // section 10.1.2, the `-l' argument information.
 171                 private static char GetSymbolicMode (FilePermissions value,
 172                         FilePermissions xbit, char both, char setonly, FilePermissions setxbit)
 173                 {
 174                         bool is_x  = UnixFileSystemInfo.IsSet (value, xbit);
 175                         bool is_sx = UnixFileSystemInfo.IsSet (value, setxbit);
 176
 177                         if (is_x && is_sx)
 178                                 return both;
 179                         if (is_sx)
 180                                 return setonly;
 181                         if (is_x)
 182                                 return 'x';
 183                         return '-';
 184                 }
 185
 186                 public static readonly DateTime UnixEpoch =
 187                         new DateTime (year:1970, month:1, day:1, hour:0, minute:0, second:0, kind:DateTimeKind.Utc);
 188                 public static readonly DateTime LocalUnixEpoch =
 189                         new DateTime (1970, 1, 1);
 190                 public static readonly TimeSpan LocalUtcOffset =
 191                         TimeZone.CurrentTimeZone.GetUtcOffset (DateTime.UtcNow);
 192
 193                 public static DateTime ToDateTime (long time)
 194                 {
 195                         return FromTimeT (time);
 196                 }
 197
 198                 public static DateTime ToDateTime (long time, long nanoTime)
 199                 {
 200                         return FromTimeT (time).AddMilliseconds (nanoTime / 1000);
 201                 }
 202
 203                 public static long FromDateTime (DateTime time)
 204                 {
 205                         return ToTimeT (time);
 206                 }
 207
 208                 public static DateTime FromTimeT (long time)
 209                 {
 210                         return UnixEpoch.AddSeconds (time).ToLocalTime ();
 211                 }
 212
 213                 public static long ToTimeT (DateTime time)
 214                 {
 215                         if (time.Kind == DateTimeKind.Unspecified)
 216                                 throw new ArgumentException ("DateTimeKind.Unspecified is not supported. Use Local or Utc times.", "time");
 217
 218                         if (time.Kind == DateTimeKind.Local)
 219                                 time = time.ToUniversalTime ();
 220
 221                         return (long) (time - UnixEpoch).TotalSeconds;
 222                 }
 223
 224                 public static OpenFlags ToOpenFlags (FileMode mode, FileAccess access)
 225                 {
 226                         OpenFlags flags = 0;
 227                         switch (mode) {
 228                         case FileMode.CreateNew:
 229                                 flags = OpenFlags.O_CREAT | OpenFlags.O_EXCL;
 230                                 break;
 231                         case FileMode.Create:
 232                                 flags = OpenFlags.O_CREAT | OpenFlags.O_TRUNC;
 233                                 break;
 234                         case FileMode.Open:
 235                                 // do nothing
 236                                 break;
 237                         case FileMode.OpenOrCreate:
 238                                 flags = OpenFlags.O_CREAT;
 239                                 break;
 240                         case FileMode.Truncate:
 241                                 flags = OpenFlags.O_TRUNC;
 242                                 break;
 243                         case FileMode.Append:
 244                                 flags = OpenFlags.O_APPEND;
 245                                 break;
 246                         default:
 247                                 throw new ArgumentException (Locale.GetText ("Unsupported mode value"), "mode");
 248                         }
 249
 250                         // Is O_LARGEFILE supported?
 251                         int _v;
 252                         if (TryFromOpenFlags (OpenFlags.O_LARGEFILE, out _v))
 253                                 flags |= OpenFlags.O_LARGEFILE;
 254
 255                         switch (access) {
 256                         case FileAccess.Read:
 257                                 flags |= OpenFlags.O_RDONLY;
 258                                 break;
 259                         case FileAccess.Write:
 260                                 flags |= OpenFlags.O_WRONLY;
 261                                 break;
 262                         case FileAccess.ReadWrite:
 263                                 flags |= OpenFlags.O_RDWR;
 264                                 break;
 265                         default:
 266                                 throw new ArgumentOutOfRangeException (Locale.GetText ("Unsupported access value"), "access");
 267                         }
 268
 269                         return flags;
 270                 }
 271
 272                 public static string ToFopenMode (FileAccess access)
 273                 {
 274                         switch (access) {
 275                                 case FileAccess.Read:       return "rb";
 276                                 case FileAccess.Write:      return "wb";
 277                                 case FileAccess.ReadWrite:  return "r+b";
 278                                 default:                    throw new ArgumentOutOfRangeException ("access");
 279                         }
 280                 }
 281
 282                 public static string ToFopenMode (FileMode mode)
 283                 {
 284                         switch (mode) {
 285                                 case FileMode.CreateNew: case FileMode.Create:        return "w+b";
 286                                 case FileMode.Open:      case FileMode.OpenOrCreate:  return "r+b";
 287                                 case FileMode.Truncate: return "w+b";
 288                                 case FileMode.Append:   return "a+b";
 289                                 default:                throw new ArgumentOutOfRangeException ("mode");
 290                         }
 291                 }
 292
 293                 private static readonly string[][] fopen_modes = new string[][]{
 294                         //                                         Read                       Write ReadWrite
 295                         /*    FileMode.CreateNew: */  new string[]{"Can't Read+Create",       "wb", "w+b"},
 296                         /*       FileMode.Create: */  new string[]{"Can't Read+Create",       "wb", "w+b"},
 297                         /*         FileMode.Open: */  new string[]{"rb",                      "wb", "r+b"},
 298                         /* FileMode.OpenOrCreate: */  new string[]{"rb",                      "wb", "r+b"},
 299                         /*     FileMode.Truncate: */  new string[]{"Cannot Truncate and Read","wb", "w+b"},
 300                         /*       FileMode.Append: */  new string[]{"Cannot Append and Read",  "ab", "a+b"},
 301                 };
 302
 303                 public static string ToFopenMode (FileMode mode, FileAccess access)
 304                 {
 305                         int fm = -1, fa = -1;
 306                         switch (mode) {
 307                                 case FileMode.CreateNew:    fm = 0; break;
 308                                 case FileMode.Create:       fm = 1; break;
 309                                 case FileMode.Open:         fm = 2; break;
 310                                 case FileMode.OpenOrCreate: fm = 3; break;
 311                                 case FileMode.Truncate:     fm = 4; break;
 312                                 case FileMode.Append:       fm = 5; break;
 313                         }
 314                         switch (access) {
 315                                 case FileAccess.Read:       fa = 0; break;
 316                                 case FileAccess.Write:      fa = 1; break;
 317                                 case FileAccess.ReadWrite:  fa = 2; break;
 318                         }
 319
 320                         if (fm == -1)
 321                                 throw new ArgumentOutOfRangeException ("mode");
 322                         if (fa == -1)
 323                                 throw new ArgumentOutOfRangeException ("access");
 324
 325                         string fopen_mode = fopen_modes [fm][fa];
 326                         if (fopen_mode [0] != 'r' && fopen_mode [0] != 'w' && fopen_mode [0] != 'a')
 327                                 throw new ArgumentException (fopen_mode);
 328                         return fopen_mode;
 329                 }
 330
 331                 [DllImport (LIB, EntryPoint="Mono_Posix_FromStat")]
 332                 private static extern int FromStat (ref Stat source, IntPtr destination);
 333
 334                 public static bool TryCopy (ref Stat source, IntPtr destination)
 335                 {
 336                         return FromStat (ref source, destination) == 0;
 337                 }
 338
 339                 [DllImport (LIB, EntryPoint="Mono_Posix_ToStat")]
 340                 private static extern int ToStat (IntPtr source, out Stat destination);
 341
 342                 public static bool TryCopy (IntPtr source, out Stat destination)
 343                 {
 344                         return ToStat (source, out destination) == 0;
 345                 }
 346
 347                 [DllImport (LIB, EntryPoint="Mono_Posix_FromStatvfs")]
 348                 private static extern int FromStatvfs (ref Statvfs source, IntPtr destination);
 349
 350                 public static bool TryCopy (ref Statvfs source, IntPtr destination)
 351                 {
 352                         return FromStatvfs (ref source, destination) == 0;
 353                 }
 354
 355                 [DllImport (LIB, EntryPoint="Mono_Posix_ToStatvfs")]
 356                 private static extern int ToStatvfs (IntPtr source, out Statvfs destination);
 357
 358                 public static bool TryCopy (IntPtr source, out Statvfs destination)
 359                 {
 360                         return ToStatvfs (source, out destination) == 0;
 361                 }
 362         }
 363 }
 364
 365 // vim: noexpandtab