win32/error.c

   1 /*
   2  * Win32 kernel functions
   3  *
   4  * Copyright 1995 Martin von Loewis and Cameron Heide
   5  */
   6
   7 #include <errno.h>
   8 #include "windef.h"
   9 #include "winerror.h"
  10
  11 /* The errno_xlat_table contains the errno-to-Win32 error
  12  * mapping.  Since this is a single table, it can't easily
  13  * take into account function-specific differences, so there
  14  * will probably be quite a few points where we don't exactly
  15  * match what NT would return.  Then again, neither does
  16  * Windows 95. :-)
  17  */
  18 typedef struct {
  19     int         err;
  20     DWORD       win32err;
  21 } ERRNO_XLAT_TABLE;
  22
  23 /* The table looks pretty ugly due to the preprocessor stuff,
  24  * but I honestly have no idea how many of these values are
  25  * portable.  I'm not even sure how many of them are even
  26  * used at all. :-)
  27  */
  28 static ERRNO_XLAT_TABLE errno_xlat_table[] = {
  29 #if defined(EPERM)
  30     {   EPERM,          ERROR_ACCESS_DENIED             },
  31 #endif
  32 #if defined(ENOENT)
  33     {   ENOENT,         ERROR_FILE_NOT_FOUND            },
  34 #endif
  35 #if defined(ESRCH)
  36     {   ESRCH,          ERROR_INVALID_PARAMETER         },
  37 #endif
  38 #if defined(EIO)
  39     {   EIO,            ERROR_IO_DEVICE                 },
  40 #endif
  41 #if defined(ENOEXEC)
  42     {   ENOEXEC,        ERROR_BAD_FORMAT                },
  43 #endif
  44 #if defined(EBADF)
  45     {   EBADF,          ERROR_INVALID_HANDLE            },
  46 #endif
  47 #if defined(ENOMEM)
  48     {   ENOMEM,         ERROR_OUTOFMEMORY               },
  49 #endif
  50 #if defined(EACCES)
  51     {   EACCES,         ERROR_ACCESS_DENIED             },
  52 #endif
  53 #if defined(EBUSY)
  54     {   EBUSY,          ERROR_BUSY                      },
  55 #endif
  56 #if defined(EEXIST)
  57     {   EEXIST,         ERROR_FILE_EXISTS               },
  58 #endif
  59 #if defined(ENODEV)
  60     {   ENODEV,         ERROR_BAD_DEVICE                },
  61 #endif
  62 #if defined(EINVAL)
  63     {   EINVAL,         ERROR_INVALID_PARAMETER         },
  64 #endif
  65 #if defined(EMFILE)
  66     {   EMFILE,         ERROR_TOO_MANY_OPEN_FILES       },
  67 #endif
  68 #if defined(ETXTBSY)
  69     {   ETXTBSY,        ERROR_BUSY,                     },
  70 #endif
  71 #if defined(ENOSPC)
  72     {   ENOSPC,         ERROR_DISK_FULL                 },
  73 #endif
  74 #if defined(ESPIPE)
  75     {   ESPIPE,         ERROR_SEEK_ON_DEVICE            },
  76 #endif
  77 #if defined(EPIPE)
  78     {   EPIPE,          ERROR_BROKEN_PIPE               },
  79 #endif
  80 #if defined(EDEADLK)
  81     {   EDEADLK,        ERROR_POSSIBLE_DEADLOCK         },
  82 #endif
  83 #if defined(ENAMETOOLONG)
  84     {   ENAMETOOLONG,   ERROR_FILENAME_EXCED_RANGE      },
  85 #endif
  86 #if defined(ENOTEMPTY)
  87     {   ENOTEMPTY,      ERROR_DIR_NOT_EMPTY             },
  88 #endif
  89     {   -1,             0                               }
  90 };
  91
  92 DWORD ErrnoToLastError(int errno_num)
  93 {
  94     DWORD rc = ERROR_UNKNOWN;
  95     int i = 0;
  96
  97     while(errno_xlat_table[i].err != -1)
  98     {
  99         if(errno_xlat_table[i].err == errno_num)
 100         {
 101             rc = errno_xlat_table[i].win32err;
 102             break;
 103         }
 104         i++;
 105     }
 106
 107     return rc;
 108 }
 109
 110 int LastErrorToErrno(DWORD lasterror)
 111 {
 112     int rc = 0; /* no error */
 113     int i = 0;
 114
 115     while(errno_xlat_table[i].err != -1)
 116     {
 117         if(errno_xlat_table[i].win32err == lasterror )
 118         {
 119             rc = errno_xlat_table[i].err;
 120             break;
 121         }
 122         i++;
 123     }
 124     return rc;
 125 }