Function open

outdated/sys/wince/celib.c:204–284

}

int __cdecl open(const char *filename, int oflag, ...)
{
    TCHAR fname[MAX_PATH + 1];
    TCHAR path[MAX_PATH + 1];
    HANDLE f;
    DWORD fileaccess;
    DWORD filecreate;

    /* O_TEXT is not supported */

    /*
     * decode the access flags
     */
    switch (oflag & (_O_RDONLY | _O_WRONLY | _O_RDWR)) {
    case _O_RDONLY: /* read access */
        fileaccess = GENERIC_READ;
        break;
    case _O_WRONLY: /* write access */
        fileaccess = GENERIC_READ | GENERIC_WRITE;
        break;
    case _O_RDWR: /* read and write access */
        fileaccess = GENERIC_READ | GENERIC_WRITE;
        break;
    default: /* error, bad oflag */
        return -1;
    }

    /*
     * decode open/create method flags
     */
    switch (oflag & (_O_CREAT | _O_EXCL | _O_TRUNC)) {
    case 0:
    case _O_EXCL: // ignore EXCL w/o CREAT
        filecreate = OPEN_EXISTING;
        break;

    case _O_CREAT:
        filecreate = OPEN_ALWAYS;
        break;

    case _O_CREAT | _O_EXCL:
    case _O_CREAT | _O_TRUNC | _O_EXCL:
        filecreate = CREATE_NEW;
        break;

    case _O_TRUNC:
    case _O_TRUNC | _O_EXCL: // ignore EXCL w/o CREAT
        filecreate = TRUNCATE_EXISTING;
        break;

    case _O_CREAT | _O_TRUNC:
        filecreate = CREATE_ALWAYS;
        break;

    default:
        return -1;
    }