Exemplo n.º 1
0
static couchstore_error_t couch_open(couchstore_error_info_t *errinfo,
                                     couch_file_handle* handle,
                                     const char *path,
                                     int oflag)
{
    int creationflag = OPEN_EXISTING;
    if(oflag & O_CREAT) {
        creationflag = OPEN_ALWAYS;
    }

    HANDLE os_handle = CreateFileA(path, GENERIC_READ | GENERIC_WRITE,
                                   FILE_SHARE_DELETE | FILE_SHARE_WRITE | FILE_SHARE_READ,
                                   NULL, creationflag, 0, NULL);

    if(os_handle == INVALID_HANDLE_VALUE) {
        DWORD last_error = save_windows_error(errinfo);
        if(last_error == ERROR_FILE_NOT_FOUND ||
                last_error == ERROR_SUCCESS) {
            return (ssize_t) COUCHSTORE_ERROR_NO_SUCH_FILE;
        };
        return COUCHSTORE_ERROR_OPEN_FILE;
    }
    /* Tell the caller about the new handle (file descriptor) */
    *handle = win_to_handle(os_handle);
    return COUCHSTORE_SUCCESS;
}
Exemplo n.º 2
0
static off_t couch_goto_eof(couch_file_handle handle)
{
    HANDLE file = handle_to_win(handle);
    LARGE_INTEGER size;
    if(!GetFileSizeEx(file, &size)) {
        save_windows_error();
        return (off_t) COUCHSTORE_ERROR_READ;
    }
    return size.QuadPart;
}
Exemplo n.º 3
0
static couchstore_error_t couch_sync(couch_file_handle handle)
{
    HANDLE file = handle_to_win(handle);

    if (!FlushFileBuffers(file)) {
        save_windows_error();
        return COUCHSTORE_ERROR_WRITE;
    }

    return COUCHSTORE_SUCCESS;
}
Exemplo n.º 4
0
static ssize_t couch_pwrite(couch_file_handle handle, const void *buf, size_t nbyte, off_t offset)
{
#ifdef LOG_IO
    fprintf(stderr, "PWRITE %8llx -- %8llx  (%6.1f kbytes)\n", offset, offset+nbyte, nbyte/1024.0);
#endif
    HANDLE file = handle_to_win(handle);
    BOOL rv;
    DWORD byteswritten;
    OVERLAPPED winoffs;
    memset(&winoffs, 0, sizeof(winoffs));
    winoffs.Offset = offset & 0xFFFFFFFF;
    winoffs.OffsetHigh = offset >> 32;
    rv = WriteFile(file, buf, nbyte, &byteswritten, &winoffs);
    if(!rv) {
        save_windows_error();
        return (ssize_t) COUCHSTORE_ERROR_WRITE;
    }
    return byteswritten;
}
Exemplo n.º 5
0
static ssize_t couch_pread(couchstore_error_info_t *errinfo,
                           couch_file_handle handle,
                           void *buf,
                           size_t nbyte,
                           cs_off_t offset)
{
#ifdef LOG_IO
    fprintf(stderr, "PREAD  %8llx -- %8llx  (%6.1f kbytes)\n", offset, offset+nbyte, nbyte/1024.0);
#endif
    HANDLE file = handle_to_win(handle);
    BOOL rv;
    DWORD bytesread;
    OVERLAPPED winoffs;
    memset(&winoffs, 0, sizeof(winoffs));
    winoffs.Offset = offset & 0xFFFFFFFF;
    winoffs.OffsetHigh = (offset >> 32) & 0x7FFFFFFF;
    rv = ReadFile(file, buf, nbyte, &bytesread, &winoffs);
    if(!rv) {
        save_windows_error(errinfo);
        return (ssize_t) COUCHSTORE_ERROR_READ;
    }
    return bytesread;
}