1 /*- 2 * Copyright (c) 2014 Antti Kantee. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 14 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 19 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 */ 25 26 #include "rumpuser_port.h" 27 28 #if !defined(lint) 29 __RCSID("$NetBSD: rumpfiber_bio.c,v 1.1 2014/07/11 20:26:31 justin Exp $"); 30 #endif /* !lint */ 31 32 #include <sys/types.h> 33 34 #include <stdint.h> 35 #include <unistd.h> 36 37 #include <rump/rumpuser.h> 38 39 #include "rumpuser_int.h" 40 41 void 42 rumpuser_bio(int fd, int op, void *data, size_t dlen, int64_t doff, 43 rump_biodone_fn biodone, void *bioarg) 44 { 45 ssize_t rv; 46 int error = 0; 47 48 if (op & RUMPUSER_BIO_READ) { 49 if ((rv = pread(fd, data, dlen, doff)) == -1) 50 error = errno; 51 } else { 52 if ((rv = pwrite(fd, data, dlen, doff)) == -1) 53 error = errno; 54 if (error == 0 && (op & RUMPUSER_BIO_SYNC)) { 55 #ifdef __NetBSD__ 56 fsync_range(fd, FDATASYNC, doff, dlen); 57 #else 58 fsync(fd); 59 #endif 60 } 61 } 62 if (rv == -1) 63 rv = 0; 64 biodone(bioarg, (size_t)rv, error); 65 } 66