- /*-
- * See the file LICENSE for redistribution information.
- *
- * Copyright (c) 1999-2002
- * Sleepycat Software. All rights reserved.
- */
- #include "db_config.h"
- #ifndef lint
- static const char revid[] = "$Id: os_errno.c,v 11.10 2002/07/12 04:05:00 mjc Exp $";
- #endif /* not lint */
- #include "db_int.h"
- /*
- * __os_get_errno --
- * Return the value of errno.
- */
- int
- __os_get_errno()
- {
- /* This routine must be able to return the same value repeatedly. */
- return (errno);
- }
- /*
- * __os_set_errno --
- * Set the value of errno.
- */
- void
- __os_set_errno(evalue)
- int evalue;
- {
- errno = evalue;
- }
- /*
- * __os_win32_errno --
- * Return the last Windows error as an errno.
- * We give generic error returns:
- *
- * EFAULT means Win* call failed,
- * and GetLastError provided no extra info.
- *
- * EIO means error on Win* call.
- * and we were unable to provide a meaningful errno for this Windows
- * error. More information is only available by setting a breakpoint
- * here.
- *
- * PUBLIC: #if defined(DB_WIN32)
- * PUBLIC: int __os_win32_errno __P((void));
- * PUBLIC: #endif
- */
- int
- __os_win32_errno(void)
- {
- DWORD last_error;
- int ret;
- /* Ignore errno - we used to check it here. */
- last_error = GetLastError();
- /*
- * Take our best guess at translating some of the Windows error
- * codes. We really care about only a few of these.
- */
- switch (last_error) {
- case ERROR_FILE_NOT_FOUND:
- case ERROR_INVALID_DRIVE:
- case ERROR_PATH_NOT_FOUND:
- ret = ENOENT;
- break;
- case ERROR_NO_MORE_FILES:
- case ERROR_TOO_MANY_OPEN_FILES:
- ret = EMFILE;
- break;
- case ERROR_ACCESS_DENIED:
- ret = EPERM;
- break;
- case ERROR_INVALID_HANDLE:
- ret = EBADF;
- break;
- case ERROR_NOT_ENOUGH_MEMORY:
- ret = ENOMEM;
- break;
- case ERROR_DISK_FULL:
- ret = ENOSPC;
- case ERROR_ARENA_TRASHED:
- case ERROR_BAD_COMMAND:
- case ERROR_BAD_ENVIRONMENT:
- case ERROR_BAD_FORMAT:
- case ERROR_GEN_FAILURE:
- case ERROR_INVALID_ACCESS:
- case ERROR_INVALID_BLOCK:
- case ERROR_INVALID_DATA:
- case ERROR_READ_FAULT:
- case ERROR_WRITE_FAULT:
- ret = EFAULT;
- break;
- case ERROR_FILE_EXISTS:
- case ERROR_ALREADY_EXISTS:
- ret = EEXIST;
- break;
- case ERROR_NOT_SAME_DEVICE:
- ret = EXDEV;
- break;
- case ERROR_WRITE_PROTECT:
- ret = EACCES;
- break;
- case ERROR_NOT_READY:
- ret = EBUSY;
- break;
- case ERROR_LOCK_VIOLATION:
- case ERROR_SHARING_VIOLATION:
- ret = EBUSY;
- break;
- case ERROR_RETRY:
- ret = EINTR;
- break;
- case 0:
- ret = EFAULT;
- break;
- default:
- ret = EIO; /* Generic error. */
- break;
- }
- return (ret);
- }