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/***
*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 */
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