zfsboottest.c revision 210650
1210650Sdfr/*- 2210650Sdfr * Copyright (c) 2010 Doug Rabson 3210650Sdfr * All rights reserved. 4210650Sdfr * 5210650Sdfr * Redistribution and use in source and binary forms, with or without 6210650Sdfr * modification, are permitted provided that the following conditions 7210650Sdfr * are met: 8210650Sdfr * 1. Redistributions of source code must retain the above copyright 9210650Sdfr * notice, this list of conditions and the following disclaimer. 10210650Sdfr * 2. Redistributions in binary form must reproduce the above copyright 11210650Sdfr * notice, this list of conditions and the following disclaimer in the 12210650Sdfr * documentation and/or other materials provided with the distribution. 13210650Sdfr * 14210650Sdfr * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15210650Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16210650Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17210650Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18210650Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19210650Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20210650Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21210650Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22210650Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23210650Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24210650Sdfr * SUCH DAMAGE. 25210650Sdfr */ 26210650Sdfr/* $FreeBSD: head/sys/boot/zfs/zfstest.c 210650 2010-07-30 13:54:15Z dfr $ */ 27210650Sdfr/* 28210650Sdfr * Compile with 'cc -I. -I../../cddl/boot/zfs zfstest.c -o zfstest' 29210650Sdfr */ 30210650Sdfr 31210650Sdfr#include <sys/param.h> 32210650Sdfr#include <sys/queue.h> 33210650Sdfr#include <fcntl.h> 34210650Sdfr#include <stdint.h> 35210650Sdfr#include <stdio.h> 36210650Sdfr#include <string.h> 37210650Sdfr#include <stdarg.h> 38210650Sdfr#include <stddef.h> 39210650Sdfr#include <stdlib.h> 40210650Sdfr#include <errno.h> 41210650Sdfr 42210650Sdfr#define NBBY 8 43210650Sdfr 44210650Sdfrvoid 45210650Sdfrpager_output(const char *line) 46210650Sdfr{ 47210650Sdfr printf("%s", line); 48210650Sdfr} 49210650Sdfr 50210650Sdfr#include "zfsimpl.c" 51210650Sdfr 52210650Sdfrstatic int 53210650Sdfrvdev_read(vdev_t *vdev, void *priv, off_t off, void *buf, size_t bytes) 54210650Sdfr{ 55210650Sdfr int fd = *(int *) priv; 56210650Sdfr 57210650Sdfr if (pread(fd, buf, bytes, off) != bytes) 58210650Sdfr return -1; 59210650Sdfr return 0; 60210650Sdfr} 61210650Sdfr 62210650Sdfrstatic int 63210650Sdfrzfs_read(spa_t *spa, dnode_phys_t *dn, void *buf, size_t size, off_t off) 64210650Sdfr{ 65210650Sdfr const znode_phys_t *zp = (const znode_phys_t *) dn->dn_bonus; 66210650Sdfr size_t n; 67210650Sdfr int rc; 68210650Sdfr 69210650Sdfr n = size; 70210650Sdfr if (off + n > zp->zp_size) 71210650Sdfr n = zp->zp_size - off; 72210650Sdfr 73210650Sdfr rc = dnode_read(spa, dn, off, buf, n); 74210650Sdfr if (rc) 75210650Sdfr return (rc); 76210650Sdfr 77210650Sdfr return (n); 78210650Sdfr} 79210650Sdfr 80210650Sdfrint 81210650Sdfrmain(int argc, char** argv) 82210650Sdfr{ 83210650Sdfr int i, n, off; 84210650Sdfr int fd[99]; 85210650Sdfr spa_t *spa; 86210650Sdfr dnode_phys_t dn; 87210650Sdfr char buf[512]; 88210650Sdfr 89210650Sdfr zfs_init(); 90210650Sdfr if (argc == 1) { 91210650Sdfr static char *av[] = { 92210650Sdfr "zfstest", "/dev/da0p2", "/dev/da1p2", "/dev/da2p2", 93210650Sdfr NULL, 94210650Sdfr }; 95210650Sdfr argc = 4; 96210650Sdfr argv = av; 97210650Sdfr } 98210650Sdfr for (i = 1; i < argc; i++) { 99210650Sdfr fd[i] = open(argv[i], O_RDONLY); 100210650Sdfr if (fd[i] < 0) 101210650Sdfr continue; 102210650Sdfr if (vdev_probe(vdev_read, &fd[i], NULL) != 0) 103210650Sdfr close(fd[i]); 104210650Sdfr } 105210650Sdfr spa_all_status(); 106210650Sdfr 107210650Sdfr spa = STAILQ_FIRST(&zfs_pools); 108210650Sdfr if (!spa || zfs_mount_pool(spa)) 109210650Sdfr exit(1); 110210650Sdfr 111210650Sdfr if (zfs_lookup(spa, "zfs.c", &dn)) 112210650Sdfr exit(1); 113210650Sdfr 114210650Sdfr off = 0; 115210650Sdfr do { 116210650Sdfr n = zfs_read(spa, &dn, buf, 512, off); 117210650Sdfr write(1, buf, n); 118210650Sdfr off += n; 119210650Sdfr } while (n == 512); 120210650Sdfr} 121