121 lines
2.9 KiB
C
121 lines
2.9 KiB
C
/*-
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* Copyright (c) 2010 Doug Rabson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* $FreeBSD$ */
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/*
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* Compile with 'cc -I. -I../../cddl/boot/zfs zfstest.c -o zfstest'
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*/
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <fcntl.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <errno.h>
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#define NBBY 8
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void
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pager_output(const char *line)
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{
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printf("%s", line);
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}
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#include "zfsimpl.c"
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static int
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vdev_read(vdev_t *vdev, void *priv, off_t off, void *buf, size_t bytes)
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{
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int fd = *(int *) priv;
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if (pread(fd, buf, bytes, off) != bytes)
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return -1;
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return 0;
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}
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static int
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zfs_read(spa_t *spa, dnode_phys_t *dn, void *buf, size_t size, off_t off)
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{
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const znode_phys_t *zp = (const znode_phys_t *) dn->dn_bonus;
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size_t n;
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int rc;
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n = size;
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if (off + n > zp->zp_size)
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n = zp->zp_size - off;
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rc = dnode_read(spa, dn, off, buf, n);
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if (rc)
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return (rc);
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return (n);
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}
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int
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main(int argc, char** argv)
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{
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int i, n, off;
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int fd[99];
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spa_t *spa;
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dnode_phys_t dn;
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char buf[512];
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zfs_init();
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if (argc == 1) {
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static char *av[] = {
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"zfstest", "/dev/da0p2", "/dev/da1p2", "/dev/da2p2",
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NULL,
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};
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argc = 4;
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argv = av;
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}
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for (i = 1; i < argc; i++) {
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fd[i] = open(argv[i], O_RDONLY);
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if (fd[i] < 0)
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continue;
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if (vdev_probe(vdev_read, &fd[i], NULL) != 0)
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close(fd[i]);
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}
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spa_all_status();
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spa = STAILQ_FIRST(&zfs_pools);
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if (!spa || zfs_mount_pool(spa))
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exit(1);
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if (zfs_lookup(spa, "zfs.c", &dn))
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exit(1);
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off = 0;
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do {
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n = zfs_read(spa, &dn, buf, 512, off);
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write(1, buf, n);
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off += n;
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} while (n == 512);
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}
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