dlls/msvcrt/errno.c

   1 /*
   2  * msvcrt.dll errno functions
   3  *
   4  * Copyright 2000 Jon Griffiths
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdio.h>
  22 #include <string.h>
  23
  24 #include "msvcrt.h"
  25 #include "wine/debug.h"
  26
  27 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  28
  29 /* error strings generated with glibc strerror */
  30 static char str_success[]       = "Success";
  31 static char str_EPERM[]         = "Operation not permitted";
  32 static char str_ENOENT[]        = "No such file or directory";
  33 static char str_ESRCH[]         = "No such process";
  34 static char str_EINTR[]         = "Interrupted system call";
  35 static char str_EIO[]           = "Input/output error";
  36 static char str_ENXIO[]         = "No such device or address";
  37 static char str_E2BIG[]         = "Argument list too long";
  38 static char str_ENOEXEC[]       = "Exec format error";
  39 static char str_EBADF[]         = "Bad file descriptor";
  40 static char str_ECHILD[]        = "No child processes";
  41 static char str_EAGAIN[]        = "Resource temporarily unavailable";
  42 static char str_ENOMEM[]        = "Cannot allocate memory";
  43 static char str_EACCES[]        = "Permission denied";
  44 static char str_EFAULT[]        = "Bad address";
  45 static char str_EBUSY[]         = "Device or resource busy";
  46 static char str_EEXIST[]        = "File exists";
  47 static char str_EXDEV[]         = "Invalid cross-device link";
  48 static char str_ENODEV[]        = "No such device";
  49 static char str_ENOTDIR[]       = "Not a directory";
  50 static char str_EISDIR[]        = "Is a directory";
  51 static char str_EINVAL[]        = "Invalid argument";
  52 static char str_ENFILE[]        = "Too many open files in system";
  53 static char str_EMFILE[]        = "Too many open files";
  54 static char str_ENOTTY[]        = "Inappropriate ioctl for device";
  55 static char str_EFBIG[]         = "File too large";
  56 static char str_ENOSPC[]        = "No space left on device";
  57 static char str_ESPIPE[]        = "Illegal seek";
  58 static char str_EROFS[]         = "Read-only file system";
  59 static char str_EMLINK[]        = "Too many links";
  60 static char str_EPIPE[]         = "Broken pipe";
  61 static char str_EDOM[]          = "Numerical argument out of domain";
  62 static char str_ERANGE[]        = "Numerical result out of range";
  63 static char str_EDEADLK[]       = "Resource deadlock avoided";
  64 static char str_ENAMETOOLONG[]  = "File name too long";
  65 static char str_ENOLCK[]        = "No locks available";
  66 static char str_ENOSYS[]        = "Function not implemented";
  67 static char str_ENOTEMPTY[]     = "Directory not empty";
  68 static char str_EILSEQ[]        = "Invalid or incomplete multibyte or wide character";
  69 static char str_generic_error[] = "Unknown error";
  70
  71 char *MSVCRT__sys_errlist[] =
  72 {
  73     str_success,
  74     str_EPERM,
  75     str_ENOENT,
  76     str_ESRCH,
  77     str_EINTR,
  78     str_EIO,
  79     str_ENXIO,
  80     str_E2BIG,
  81     str_ENOEXEC,
  82     str_EBADF,
  83     str_ECHILD,
  84     str_EAGAIN,
  85     str_ENOMEM,
  86     str_EACCES,
  87     str_EFAULT,
  88     str_generic_error,
  89     str_EBUSY,
  90     str_EEXIST,
  91     str_EXDEV,
  92     str_ENODEV,
  93     str_ENOTDIR,
  94     str_EISDIR,
  95     str_EINVAL,
  96     str_ENFILE,
  97     str_EMFILE,
  98     str_ENOTTY,
  99     str_generic_error,
 100     str_EFBIG,
 101     str_ENOSPC,
 102     str_ESPIPE,
 103     str_EROFS,
 104     str_EMLINK,
 105     str_EPIPE,
 106     str_EDOM,
 107     str_ERANGE,
 108     str_generic_error,
 109     str_EDEADLK,
 110     str_generic_error,
 111     str_ENAMETOOLONG,
 112     str_ENOLCK,
 113     str_ENOSYS,
 114     str_ENOTEMPTY,
 115     str_EILSEQ,
 116     str_generic_error
 117 };
 118
 119 unsigned int MSVCRT__sys_nerr = sizeof(MSVCRT__sys_errlist)/sizeof(MSVCRT__sys_errlist[0]) - 1;
 120
 121 /* INTERNAL: Set the crt and dos errno's from the OS error given. */
 122 void msvcrt_set_errno(int err)
 123 {
 124   int *errno = MSVCRT__errno();
 125   unsigned long *doserrno = MSVCRT___doserrno();
 126
 127   *doserrno = err;
 128
 129   switch(err)
 130   {
 131 #define ERR_CASE(oserr) case oserr:
 132 #define ERR_MAPS(oserr,crterr) case oserr:*errno = crterr;break;
 133     ERR_CASE(ERROR_ACCESS_DENIED)
 134     ERR_CASE(ERROR_NETWORK_ACCESS_DENIED)
 135     ERR_CASE(ERROR_CANNOT_MAKE)
 136     ERR_CASE(ERROR_SEEK_ON_DEVICE)
 137     ERR_CASE(ERROR_LOCK_FAILED)
 138     ERR_CASE(ERROR_FAIL_I24)
 139     ERR_CASE(ERROR_CURRENT_DIRECTORY)
 140     ERR_CASE(ERROR_DRIVE_LOCKED)
 141     ERR_CASE(ERROR_NOT_LOCKED)
 142     ERR_CASE(ERROR_INVALID_ACCESS)
 143     ERR_MAPS(ERROR_LOCK_VIOLATION,       MSVCRT_EACCES);
 144     ERR_CASE(ERROR_FILE_NOT_FOUND)
 145     ERR_CASE(ERROR_NO_MORE_FILES)
 146     ERR_CASE(ERROR_BAD_PATHNAME)
 147     ERR_CASE(ERROR_BAD_NETPATH)
 148     ERR_CASE(ERROR_INVALID_DRIVE)
 149     ERR_CASE(ERROR_BAD_NET_NAME)
 150     ERR_CASE(ERROR_FILENAME_EXCED_RANGE)
 151     ERR_MAPS(ERROR_PATH_NOT_FOUND,       MSVCRT_ENOENT);
 152     ERR_MAPS(ERROR_IO_DEVICE,            MSVCRT_EIO);
 153     ERR_MAPS(ERROR_BAD_FORMAT,           MSVCRT_ENOEXEC);
 154     ERR_MAPS(ERROR_INVALID_HANDLE,       MSVCRT_EBADF);
 155     ERR_CASE(ERROR_OUTOFMEMORY)
 156     ERR_CASE(ERROR_INVALID_BLOCK)
 157     ERR_CASE(ERROR_NOT_ENOUGH_QUOTA);
 158     ERR_MAPS(ERROR_ARENA_TRASHED,        MSVCRT_ENOMEM);
 159     ERR_MAPS(ERROR_BUSY,                 MSVCRT_EBUSY);
 160     ERR_CASE(ERROR_ALREADY_EXISTS)
 161     ERR_MAPS(ERROR_FILE_EXISTS,          MSVCRT_EEXIST);
 162     ERR_MAPS(ERROR_BAD_DEVICE,           MSVCRT_ENODEV);
 163     ERR_MAPS(ERROR_TOO_MANY_OPEN_FILES,  MSVCRT_EMFILE);
 164     ERR_MAPS(ERROR_DISK_FULL,            MSVCRT_ENOSPC);
 165     ERR_MAPS(ERROR_BROKEN_PIPE,          MSVCRT_EPIPE);
 166     ERR_MAPS(ERROR_POSSIBLE_DEADLOCK,    MSVCRT_EDEADLK);
 167     ERR_MAPS(ERROR_DIR_NOT_EMPTY,        MSVCRT_ENOTEMPTY);
 168     ERR_MAPS(ERROR_BAD_ENVIRONMENT,      MSVCRT_E2BIG);
 169     ERR_CASE(ERROR_WAIT_NO_CHILDREN)
 170     ERR_MAPS(ERROR_CHILD_NOT_COMPLETE,   MSVCRT_ECHILD);
 171     ERR_CASE(ERROR_NO_PROC_SLOTS)
 172     ERR_CASE(ERROR_MAX_THRDS_REACHED)
 173     ERR_MAPS(ERROR_NESTING_NOT_ALLOWED,  MSVCRT_EAGAIN);
 174   default:
 175     /*  Remaining cases map to EINVAL */
 176     /* FIXME: may be missing some errors above */
 177     *errno = MSVCRT_EINVAL;
 178   }
 179 }
 180
 181 /*********************************************************************
 182  *              _errno (MSVCRT.@)
 183  */
 184 int* CDECL MSVCRT__errno(void)
 185 {
 186     return &msvcrt_get_thread_data()->thread_errno;
 187 }
 188
 189 /*********************************************************************
 190  *              __doserrno (MSVCRT.@)
 191  */
 192 unsigned long* CDECL MSVCRT___doserrno(void)
 193 {
 194     return &msvcrt_get_thread_data()->thread_doserrno;
 195 }
 196
 197 /*********************************************************************
 198  *              strerror (MSVCRT.@)
 199  */
 200 char* CDECL MSVCRT_strerror(int err)
 201 {
 202     thread_data_t *data = msvcrt_get_thread_data();
 203
 204     if (!data->strerror_buffer)
 205         if (!(data->strerror_buffer = MSVCRT_malloc(256))) return NULL;
 206
 207     if (err < 0 || err > MSVCRT__sys_nerr) err = MSVCRT__sys_nerr;
 208     strcpy( data->strerror_buffer, MSVCRT__sys_errlist[err] );
 209     return data->strerror_buffer;
 210 }
 211
 212 /**********************************************************************
 213  *              _strerror       (MSVCRT.@)
 214  */
 215 char* CDECL _strerror(const char* str)
 216 {
 217     thread_data_t *data = msvcrt_get_thread_data();
 218     int err;
 219
 220     if (!data->strerror_buffer)
 221         if (!(data->strerror_buffer = MSVCRT_malloc(256))) return NULL;
 222
 223     err = data->thread_errno;
 224     if (err < 0 || err > MSVCRT__sys_nerr) err = MSVCRT__sys_nerr;
 225
 226     if (str && *str)
 227         sprintf( data->strerror_buffer, "%s: %s\n", str, MSVCRT__sys_errlist[err] );
 228     else
 229         sprintf( data->strerror_buffer, "%s\n", MSVCRT__sys_errlist[err] );
 230
 231     return data->strerror_buffer;
 232 }
 233
 234 /*********************************************************************
 235  *              perror (MSVCRT.@)
 236  */
 237 void CDECL MSVCRT_perror(const char* str)
 238 {
 239     int err = *MSVCRT__errno();
 240     if (err < 0 || err > MSVCRT__sys_nerr) err = MSVCRT__sys_nerr;
 241
 242     if (str && *str)
 243     {
 244         _write( 2, str, strlen(str) );
 245         _write( 2, ": ", 2 );
 246     }
 247     _write( 2, MSVCRT__sys_errlist[err], strlen(MSVCRT__sys_errlist[err]) );
 248     _write( 2, "\n", 1 );
 249 }
 250
 251 /******************************************************************************
 252  *              _set_error_mode (MSVCRT.@)
 253  *
 254  * Set the error mode, which describes where the C run-time writes error
 255  * messages.
 256  *
 257  * PARAMS
 258  *   mode - the new error mode
 259  *
 260  * RETURNS
 261  *   The old error mode.
 262  *
 263  * TODO
 264  *  This function does not have a proper implementation; the error mode is
 265  *  never used.
 266  */
 267 int CDECL _set_error_mode(int mode)
 268 {
 269   static int current_mode = MSVCRT__OUT_TO_DEFAULT;
 270
 271   const int old = current_mode;
 272   if ( MSVCRT__REPORT_ERRMODE != mode ) {
 273     current_mode = mode;
 274     FIXME("dummy implementation (old mode: %d, new mode: %d)\n",
 275           old, mode);
 276   }
 277   return old;
 278 }
 279
 280 /******************************************************************************
 281  *              _seterrormode (MSVCRT.@)
 282  */
 283 void CDECL _seterrormode(int mode)
 284 {
 285     SetErrorMode( mode );
 286 }