/***
*dosmap.c - Maps OS errors to errno values
*
* Copyright (c) 1989-2001, Microsoft Corporation. All rights reserved.
*
*Purpose:
* _dosmaperr: Maps OS errors to errno values
*
*Revision History:
* 06-06-89 PHG Module created, based on asm version
* 06-16-89 PHG Changed name to _dosmaperr
* 08-22-89 JCR ERROR_INVALID_DRIVE (15) now maps to ENOENT not EXDEV
* 03-07-90 GJF Made calling type _CALLTYPE1, added #include
* <cruntime.h> and fixed copyright. Also, cleaned up the
* formatting a bit.
* 09-27-90 GJF New-style function declarator.
* 12-04-90 SRW Changed to include <oscalls.h> instead of <doscalls.h>
* 12-06-90 SRW Added _CRUISER_ and _WIN32 conditionals.
* 04-26-91 SRW Added ERROR_LOCK_VIOLATION translation to EACCES
* 08-15-91 GJF Multi-thread support for Win32.
* 03-31-92 GJF Added more error codes (Win32 only) and removed OS/2
* specific nomenclature.
* 07-29-92 GJF Added ERROR_FILE_EXISTS to table for Win32. It gets
* mapped it to EEXIST.
* 09-14-92 SRW Added ERROR_BAD_PATHNAME table for Win32. It gets
* mapped it to ENOENT.
* 10-02-92 GJF Map ERROR_INVALID_PARAMETER to EINVAL (rather than
* EACCES). Added ERROR_NOT_LOCKED and mapped it to
* EACCES. Added ERROR_DIR_NOT_EMPTY and mapped it to
* ENOTEMPTY.
* 02-16-93 GJF Changed for new _getptd().
* 04-06-93 SKS Replace _CRTAPI* with __cdecl
* 01-06-94 GJF Dumped obsolete Cruiser support, revised errentry
* struct definition and added mapping for infamous
* ERROR_NOT_ENOUGH_QUOTA (non-swappable memory pages)
* which might result from a CreateThread call.
* 02-08-95 JWM Spliced _WIN32 & Mac versions.
* 05-24-95 CFW Map dupFNErr to EEXIST rather than EACCESS.
* 07-01-96 GJF Replaced defined(_WIN32) with !defined(_MAC). Also,
* detab-ed and cleaned up the format a bit.
* 05-17-99 PML Remove all Macintosh support.
*
*******************************************************************************/
#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 */