206 lines
8.1 KiB
C
206 lines
8.1 KiB
C
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/***
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*dosmap.c - Maps OS errors to errno values
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*
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* Copyright (c) 1989-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* _dosmaperr: Maps OS errors to errno values
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*
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*Revision History:
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* 06-06-89 PHG Module created, based on asm version
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* 06-16-89 PHG Changed name to _dosmaperr
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* 08-22-89 JCR ERROR_INVALID_DRIVE (15) now maps to ENOENT not EXDEV
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* 03-07-90 GJF Made calling type _CALLTYPE1, added #include
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* <cruntime.h> and fixed copyright. Also, cleaned up the
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* formatting a bit.
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* 09-27-90 GJF New-style function declarator.
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* 12-04-90 SRW Changed to include <oscalls.h> instead of <doscalls.h>
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* 12-06-90 SRW Added _CRUISER_ and _WIN32 conditionals.
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* 04-26-91 SRW Added ERROR_LOCK_VIOLATION translation to EACCES
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* 08-15-91 GJF Multi-thread support for Win32.
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* 03-31-92 GJF Added more error codes (Win32 only) and removed OS/2
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* specific nomenclature.
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* 07-29-92 GJF Added ERROR_FILE_EXISTS to table for Win32. It gets
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* mapped it to EEXIST.
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* 09-14-92 SRW Added ERROR_BAD_PATHNAME table for Win32. It gets
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* mapped it to ENOENT.
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* 10-02-92 GJF Map ERROR_INVALID_PARAMETER to EINVAL (rather than
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* EACCES). Added ERROR_NOT_LOCKED and mapped it to
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* EACCES. Added ERROR_DIR_NOT_EMPTY and mapped it to
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* ENOTEMPTY.
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* 02-16-93 GJF Changed for new _getptd().
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* 04-06-93 SKS Replace _CRTAPI* with __cdecl
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* 01-06-94 GJF Dumped obsolete Cruiser support, revised errentry
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* struct definition and added mapping for infamous
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* ERROR_NOT_ENOUGH_QUOTA (non-swappable memory pages)
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* which might result from a CreateThread call.
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* 02-08-95 JWM Spliced _WIN32 & Mac versions.
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* 05-24-95 CFW Map dupFNErr to EEXIST rather than EACCESS.
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* 07-01-96 GJF Replaced defined(_WIN32) with !defined(_MAC). Also,
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* detab-ed and cleaned up the format a bit.
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* 05-17-99 PML Remove all Macintosh support.
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*
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*******************************************************************************/
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#include <cruntime.h>
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#include <errno.h>
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#include <oscalls.h>
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#include <stdlib.h>
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#include <internal.h>
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#include <mtdll.h>
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/* This is the error table that defines the mapping between OS error
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codes and errno values */
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struct errentry {
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unsigned long oscode; /* OS return value */
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int errnocode; /* System V error code */
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};
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static struct errentry errtable[] = {
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{ ERROR_INVALID_FUNCTION, EINVAL }, /* 1 */
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{ ERROR_FILE_NOT_FOUND, ENOENT }, /* 2 */
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{ ERROR_PATH_NOT_FOUND, ENOENT }, /* 3 */
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{ ERROR_TOO_MANY_OPEN_FILES, EMFILE }, /* 4 */
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{ ERROR_ACCESS_DENIED, EACCES }, /* 5 */
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{ ERROR_INVALID_HANDLE, EBADF }, /* 6 */
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{ ERROR_ARENA_TRASHED, ENOMEM }, /* 7 */
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{ ERROR_NOT_ENOUGH_MEMORY, ENOMEM }, /* 8 */
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{ ERROR_INVALID_BLOCK, ENOMEM }, /* 9 */
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{ ERROR_BAD_ENVIRONMENT, E2BIG }, /* 10 */
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{ ERROR_BAD_FORMAT, ENOEXEC }, /* 11 */
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{ ERROR_INVALID_ACCESS, EINVAL }, /* 12 */
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{ ERROR_INVALID_DATA, EINVAL }, /* 13 */
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{ ERROR_INVALID_DRIVE, ENOENT }, /* 15 */
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{ ERROR_CURRENT_DIRECTORY, EACCES }, /* 16 */
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{ ERROR_NOT_SAME_DEVICE, EXDEV }, /* 17 */
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{ ERROR_NO_MORE_FILES, ENOENT }, /* 18 */
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{ ERROR_LOCK_VIOLATION, EACCES }, /* 33 */
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{ ERROR_BAD_NETPATH, ENOENT }, /* 53 */
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{ ERROR_NETWORK_ACCESS_DENIED, EACCES }, /* 65 */
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{ ERROR_BAD_NET_NAME, ENOENT }, /* 67 */
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{ ERROR_FILE_EXISTS, EEXIST }, /* 80 */
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{ ERROR_CANNOT_MAKE, EACCES }, /* 82 */
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{ ERROR_FAIL_I24, EACCES }, /* 83 */
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{ ERROR_INVALID_PARAMETER, EINVAL }, /* 87 */
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{ ERROR_NO_PROC_SLOTS, EAGAIN }, /* 89 */
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{ ERROR_DRIVE_LOCKED, EACCES }, /* 108 */
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{ ERROR_BROKEN_PIPE, EPIPE }, /* 109 */
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{ ERROR_DISK_FULL, ENOSPC }, /* 112 */
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{ ERROR_INVALID_TARGET_HANDLE, EBADF }, /* 114 */
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{ ERROR_INVALID_HANDLE, EINVAL }, /* 124 */
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{ ERROR_WAIT_NO_CHILDREN, ECHILD }, /* 128 */
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{ ERROR_CHILD_NOT_COMPLETE, ECHILD }, /* 129 */
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{ ERROR_DIRECT_ACCESS_HANDLE, EBADF }, /* 130 */
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{ ERROR_NEGATIVE_SEEK, EINVAL }, /* 131 */
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{ ERROR_SEEK_ON_DEVICE, EACCES }, /* 132 */
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{ ERROR_DIR_NOT_EMPTY, ENOTEMPTY }, /* 145 */
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{ ERROR_NOT_LOCKED, EACCES }, /* 158 */
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{ ERROR_BAD_PATHNAME, ENOENT }, /* 161 */
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{ ERROR_MAX_THRDS_REACHED, EAGAIN }, /* 164 */
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{ ERROR_LOCK_FAILED, EACCES }, /* 167 */
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{ ERROR_ALREADY_EXISTS, EEXIST }, /* 183 */
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{ ERROR_FILENAME_EXCED_RANGE, ENOENT }, /* 206 */
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{ ERROR_NESTING_NOT_ALLOWED, EAGAIN }, /* 215 */
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{ ERROR_NOT_ENOUGH_QUOTA, ENOMEM } /* 1816 */
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};
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/* size of the table */
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#define ERRTABLESIZE (sizeof(errtable)/sizeof(errtable[0]))
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/* The following two constants must be the minimum and maximum
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values in the (contiguous) range of Exec Failure errors. */
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#define MIN_EXEC_ERROR ERROR_INVALID_STARTING_CODESEG
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#define MAX_EXEC_ERROR ERROR_INFLOOP_IN_RELOC_CHAIN
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/* These are the low and high value in the range of errors that are
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access violations */
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#define MIN_EACCES_RANGE ERROR_WRITE_PROTECT
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#define MAX_EACCES_RANGE ERROR_SHARING_BUFFER_EXCEEDED
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/***
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*void _dosmaperr(oserrno) - Map function number
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*
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*Purpose:
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* This function takes an OS error number, and maps it to the
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* corresponding errno value (based on UNIX System V values). The
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* OS error number is stored in _doserrno (and the mapped value is
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* stored in errno)
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*
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*Entry:
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* ULONG oserrno = OS error value
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*
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*Exit:
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* sets _doserrno and errno.
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*
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*Exceptions:
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*
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*******************************************************************************/
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void __cdecl _dosmaperr (
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unsigned long oserrno
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)
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{
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int i;
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_doserrno = oserrno; /* set _doserrno */
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/* check the table for the OS error code */
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for (i = 0; i < ERRTABLESIZE; ++i) {
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if (oserrno == errtable[i].oscode) {
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errno = errtable[i].errnocode;
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return;
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}
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}
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/* The error code wasn't in the table. We check for a range of */
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/* EACCES errors or exec failure errors (ENOEXEC). Otherwise */
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/* EINVAL is returned. */
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if (oserrno >= MIN_EACCES_RANGE && oserrno <= MAX_EACCES_RANGE)
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errno = EACCES;
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else if (oserrno >= MIN_EXEC_ERROR && oserrno <= MAX_EXEC_ERROR)
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errno = ENOEXEC;
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else
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errno = EINVAL;
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}
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#ifdef _MT
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/***
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*int * _errno() - return pointer to thread's errno
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*unsigned long * __doserrno() - return pointer to thread's _doserrno
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*
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*Purpose:
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* _errno() returns a pointer to the _terrno field in the current
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* thread's _tiddata structure.
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* __doserrno returns a pointer to the _tdoserrno field in the current
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* thread's _tiddata structure
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*
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*Entry:
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* None.
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*
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*Exit:
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* See above.
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*
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*Exceptions:
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*
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*******************************************************************************/
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int * __cdecl _errno(
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void
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)
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{
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return ( &(_getptd()->_terrno) );
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}
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unsigned long * __cdecl __doserrno(
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void
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)
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{
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return ( &(_getptd()->_tdoserrno) );
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}
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#endif /* _MT */
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