📄 dosmap.c
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/***
*dosmap.c - Maps OS errors to errno values
*
* Copyright (c) 1989-1997, Microsoft Corporation. All rights reserved.
*
*Purpose:
* _dosmaperr: Maps OS errors to errno values
*
*******************************************************************************/
#ifndef _MAC
#include <cruntime.h>
#include <errno.h>
#include <oscalls.h>
#include <stdlib.h>
#include <internal.h>
#include <mtdll.h>
/* This is the error table that defines the mapping between OS error
codes and errno values */
struct errentry {
unsigned long oscode; /* OS return value */
int errnocode; /* System V error code */
};
static struct errentry errtable[] = {
{ ERROR_INVALID_FUNCTION, EINVAL }, /* 1 */
{ ERROR_FILE_NOT_FOUND, ENOENT }, /* 2 */
{ ERROR_PATH_NOT_FOUND, ENOENT }, /* 3 */
{ ERROR_TOO_MANY_OPEN_FILES, EMFILE }, /* 4 */
{ ERROR_ACCESS_DENIED, EACCES }, /* 5 */
{ ERROR_INVALID_HANDLE, EBADF }, /* 6 */
{ ERROR_ARENA_TRASHED, ENOMEM }, /* 7 */
{ ERROR_NOT_ENOUGH_MEMORY, ENOMEM }, /* 8 */
{ ERROR_INVALID_BLOCK, ENOMEM }, /* 9 */
{ ERROR_BAD_ENVIRONMENT, E2BIG }, /* 10 */
{ ERROR_BAD_FORMAT, ENOEXEC }, /* 11 */
{ ERROR_INVALID_ACCESS, EINVAL }, /* 12 */
{ ERROR_INVALID_DATA, EINVAL }, /* 13 */
{ ERROR_INVALID_DRIVE, ENOENT }, /* 15 */
{ ERROR_CURRENT_DIRECTORY, EACCES }, /* 16 */
{ ERROR_NOT_SAME_DEVICE, EXDEV }, /* 17 */
{ ERROR_NO_MORE_FILES, ENOENT }, /* 18 */
{ ERROR_LOCK_VIOLATION, EACCES }, /* 33 */
{ ERROR_BAD_NETPATH, ENOENT }, /* 53 */
{ ERROR_NETWORK_ACCESS_DENIED, EACCES }, /* 65 */
{ ERROR_BAD_NET_NAME, ENOENT }, /* 67 */
{ ERROR_FILE_EXISTS, EEXIST }, /* 80 */
{ ERROR_CANNOT_MAKE, EACCES }, /* 82 */
{ ERROR_FAIL_I24, EACCES }, /* 83 */
{ ERROR_INVALID_PARAMETER, EINVAL }, /* 87 */
{ ERROR_NO_PROC_SLOTS, EAGAIN }, /* 89 */
{ ERROR_DRIVE_LOCKED, EACCES }, /* 108 */
{ ERROR_BROKEN_PIPE, EPIPE }, /* 109 */
{ ERROR_DISK_FULL, ENOSPC }, /* 112 */
{ ERROR_INVALID_TARGET_HANDLE, EBADF }, /* 114 */
{ ERROR_INVALID_HANDLE, EINVAL }, /* 124 */
{ ERROR_WAIT_NO_CHILDREN, ECHILD }, /* 128 */
{ ERROR_CHILD_NOT_COMPLETE, ECHILD }, /* 129 */
{ ERROR_DIRECT_ACCESS_HANDLE, EBADF }, /* 130 */
{ ERROR_NEGATIVE_SEEK, EINVAL }, /* 131 */
{ ERROR_SEEK_ON_DEVICE, EACCES }, /* 132 */
{ ERROR_DIR_NOT_EMPTY, ENOTEMPTY }, /* 145 */
{ ERROR_NOT_LOCKED, EACCES }, /* 158 */
{ ERROR_BAD_PATHNAME, ENOENT }, /* 161 */
{ ERROR_MAX_THRDS_REACHED, EAGAIN }, /* 164 */
{ ERROR_LOCK_FAILED, EACCES }, /* 167 */
{ ERROR_ALREADY_EXISTS, EEXIST }, /* 183 */
{ ERROR_FILENAME_EXCED_RANGE, ENOENT }, /* 206 */
{ ERROR_NESTING_NOT_ALLOWED, EAGAIN }, /* 215 */
{ ERROR_NOT_ENOUGH_QUOTA, ENOMEM } /* 1816 */
};
/* size of the table */
#define ERRTABLESIZE (sizeof(errtable)/sizeof(errtable[0]))
/* The following two constants must be the minimum and maximum
values in the (contiguous) range of Exec Failure errors. */
#define MIN_EXEC_ERROR ERROR_INVALID_STARTING_CODESEG
#define MAX_EXEC_ERROR ERROR_INFLOOP_IN_RELOC_CHAIN
/* These are the low and high value in the range of errors that are
access violations */
#define MIN_EACCES_RANGE ERROR_WRITE_PROTECT
#define MAX_EACCES_RANGE ERROR_SHARING_BUFFER_EXCEEDED
/***
*void _dosmaperr(oserrno) - Map function number
*
*Purpose:
* This function takes an OS error number, and maps it to the
* corresponding errno value (based on UNIX System V values). The
* OS error number is stored in _doserrno (and the mapped value is
* stored in errno)
*
*Entry:
* ULONG oserrno = OS error value
*
*Exit:
* sets _doserrno and errno.
*
*Exceptions:
*
*******************************************************************************/
void __cdecl _dosmaperr (
unsigned long oserrno
)
{
int i;
_doserrno = oserrno; /* set _doserrno */
/* check the table for the OS error code */
for (i = 0; i < ERRTABLESIZE; ++i) {
if (oserrno == errtable[i].oscode) {
errno = errtable[i].errnocode;
return;
}
}
/* The error code wasn't in the table. We check for a range of */
/* EACCES errors or exec failure errors (ENOEXEC). Otherwise */
/* EINVAL is returned. */
if (oserrno >= MIN_EACCES_RANGE && oserrno <= MAX_EACCES_RANGE)
errno = EACCES;
else if (oserrno >= MIN_EXEC_ERROR && oserrno <= MAX_EXEC_ERROR)
errno = ENOEXEC;
else
errno = EINVAL;
}
#ifdef _MT
/***
*int * _errno() - return pointer to thread's errno
*unsigned long * __doserrno() - return pointer to thread's _doserrno
*
*Purpose:
* _errno() returns a pointer to the _terrno field in the current
* thread's _tiddata structure.
* __doserrno returns a pointer to the _tdoserrno field in the current
* thread's _tiddata structure
*
*Entry:
* None.
*
*Exit:
* See above.
*
*Exceptions:
*
*******************************************************************************/
int * __cdecl _errno(
void
)
{
return ( &(_getptd()->_terrno) );
}
unsigned long * __cdecl __doserrno(
void
)
{
return ( &(_getptd()->_tdoserrno) );
}
#endif /* _MT */
#else /* _MAC */
#include <cruntime.h>
#include <errno.h>
#include <internal.h>
#include <stdlib.h>
#include <macos\osutils.h>
#include <macos\files.h>
#include <macos\errors.h>
/* This is the error table that defines the mapping between Mac and
System V error values */
struct errentry {
short maccode; /* MAC return value */
unsigned short errnocode; /* System V error code */
};
static struct errentry errtable[] = {
{ ioErr, EIO }, /*I/O error (bummers)*/
{ paramErr, ENOENT }, /*error in user parameter list */
{ dirFulErr, ENOSPC }, /*Directory full*/
{ dskFulErr, ENOSPC }, /*disk full*/
{ nsvErr, ENOENT }, /*no such volume*/
{ bdNamErr, EINVAL }, /*there may be no bad names in the final system!*/
{ fnOpnErr, EACCES }, /*File not open*/
{ eofErr, EINVAL }, /*End of file*/
{ posErr, EINVAL }, /*tried to position to before start of file (r/w)*/
{ mFulErr, ENOMEM }, /*memory full (open) or file won't fit (load)*/
{ tmfoErr, EMFILE }, /*too many files open*/
{ fnfErr, ENOENT }, /*File not found*/
{ wPrErr, EACCES }, /*diskette is write protected.*/
{ fLckdErr, EACCES }, /*file is locked*/
{ vLckdErr, EACCES }, /*volume is locked*/
{ fBsyErr, EACCES }, /*File is busy (delete)*/
{ dupFNErr, EEXIST }, /*duplicate filename (rename)*/
{ opWrErr, EACCES }, /*file already open with with write permission*/
{ rfNumErr, EINVAL }, /*refnum error*/
{ gfpErr, EINVAL }, /*get file position error*/
{ volOffLinErr, EINVAL }, /*volume not on line error (was Ejected)*/
{ permErr, EACCES }, /*permissions error (on file open)*/
{ volOnLinErr, EINVAL }, /*drive volume already on-line at MountVol*/
{ nsDrvErr, EINVAL }, /*no such drive (tried to mount a bad drive num)*/
{ noMacDskErr, EINVAL }, /*not a mac diskette (sig bytes are wrong)*/
{ extFSErr, EINVAL }, /*volume in question belongs to an external fs*/
{ fsRnErr, EINVAL }, /*file system internal error:during rename the old entry was deleted but could not be restored.*/
{ badMDBErr, EINVAL }, /*bad master directory block*/
{ wrPermErr, EACCES }, /*write permissions error*/
{ dirNFErr, ENOENT }, /*Directory not found*/
{ tmwdoErr, EMFILE }, /*No free WDCB available*/
{ badMovErr, EINVAL }, /*Move into offspring error*/
{ wrgVolTypErr, EINVAL }, /*Wrong volume type error [operation not supported for MFS]*/
{ volGoneErr, EINVAL }, /*Server volume has been disconnected.*/
{ fidNotFound, EBADF }, /*no file thread exists.*/
{ fidExists, EEXIST }, /*file id already exists*/
{ notAFileErr, EINVAL }, /*directory specified*/
{ diffVolErr, EINVAL }, /*files on different volumes*/
{ catChangedErr, EINVAL }, /*the catalog has been modified*/
{ desktopDamagedErr, EINVAL }, /*desktop database files are corrupted*/
{ sameFileErr, EINVAL }, /*can't exchange a file with itself*/
{ badFidErr, EBADF }, /*file id is dangling or doesn't match with the file number*/
{ afpRangeOverlap, EACCES }, /*locking error*/
{ afpRangeNotLocked, EACCES }, /*unlocking error*/
{ afpObjectTypeErr, EACCES }, /*file is a directory*/
{ afpAccessDenied, EACCES }, /*user does not have correct acces to the file*/
};
/* size of the table */
#define ERRTABLESIZE (sizeof(errtable)/sizeof(errtable[0]))
/***
*void _dosmaperr(short macerrno) - Map function number
*
*Purpose:
* This function takes a Mac error number, and maps it to
* an System V error number. The short error number is
* stored in _doserrno, while the System V error number
* is stored in errno.
*
*Entry:
* short macerrno = Mac error value
*
*Exit:
* sets _macerrno and errno.
*
*Exceptions:
*
*******************************************************************************/
void __cdecl _dosmaperr (
short macerrno
)
{
int i;
_macerrno = macerrno; /* set _macerrno */
/* check the table for the mac error code */
for (i = 0; i < ERRTABLESIZE; ++i) {
if (macerrno == errtable[i].maccode) {
errno = errtable[i].errnocode;
return;
}
}
errno = EINVAL;
}
#endif /* _MAC */
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