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Fix block device-related issues in zdb.

Browse Source 
Specifically, this fixes the two following errors in zdb when a pool
is composed of block devices:

1) 'Value too large for defined data type' when running 'zdb <dataset>'.
2) 'character device required' when running 'zdb -l <block-device>'.

Signed-off-by: Ricardo M. Correia <ricardo.correia@oracle.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Ricardo M. Correia 2010-12-14 09:50:37 -08:00 committed by Brian Behlendorf
parent a7dc7e5d5a
commit 8d4e8140ef
5 changed files with 58 additions and 23 deletions
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10
cmd/zdb/zdb.c
View File

@ -1803,7 +1803,7 @@ dump_label(const char *dev)
exit(1);
}
if (fstat64(fd, &statbuf) != 0) {
if (fstat64_blk(fd, &statbuf) != 0) {
(void) printf("failed to stat '%s': %s\n", path,
strerror(errno));
free(path);
@ -1811,14 +1811,6 @@ dump_label(const char *dev)
exit(1);
}
if (S_ISBLK(statbuf.st_mode)) {
(void) printf("cannot use '%s': character device required\n",
path);
free(path);
(void) close(fd);
exit(1);
}
psize = statbuf.st_size;
psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));

1
lib/libspl/include/sys/Makefile.am
View File

@ -36,6 +36,7 @@ libspl_HEADERS = \
$(top_srcdir)/lib/libspl/include/sys/processor.h \
$(top_srcdir)/lib/libspl/include/sys/sdt.h \
$(top_srcdir)/lib/libspl/include/sys/stack.h \
$(top_srcdir)/lib/libspl/include/sys/stat.h \
$(top_srcdir)/lib/libspl/include/sys/stropts.h \
$(top_srcdir)/lib/libspl/include/sys/sunddi.h \
$(top_srcdir)/lib/libspl/include/sys/sysevent.h \

1
lib/libspl/include/sys/Makefile.in
View File

@ -349,6 +349,7 @@ libspl_HEADERS = \
$(top_srcdir)/lib/libspl/include/sys/processor.h \
$(top_srcdir)/lib/libspl/include/sys/sdt.h \
$(top_srcdir)/lib/libspl/include/sys/stack.h \
$(top_srcdir)/lib/libspl/include/sys/stat.h \
$(top_srcdir)/lib/libspl/include/sys/stropts.h \
$(top_srcdir)/lib/libspl/include/sys/sunddi.h \
$(top_srcdir)/lib/libspl/include/sys/sysevent.h \

50
lib/libspl/include/sys/stat.h Normal file
View File

@ -0,0 +1,50 @@
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
*/
#ifndef _LIBSPL_SYS_STAT_H
#define _LIBSPL_SYS_STAT_H
#include_next <sys/stat.h>
#include <sys/mount.h> /* for BLKGETSIZE64 */
/*
* Emulate Solaris' behavior of returning the block device size in fstat64().
*/
static inline int
fstat64_blk(int fd, struct stat64 *st)
{
if (fstat64(fd, st) == -1)
return -1;
/* In Linux we need to use an ioctl to get the size of a block device */
if (S_ISBLK(st->st_mode)) {
if (ioctl(fd, BLKGETSIZE64, &st->st_size) != 0)
return -1;
}
return 0;
}
#endif /* _LIBSPL_SYS_STAT_H */

19
lib/libzpool/kernel.c
View File

@ -36,7 +36,6 @@
#include <sys/zfs_context.h>
#include <sys/utsname.h>
#include <sys/time.h>
#include <sys/mount.h> /* for BLKGETSIZE64 */
#include <sys/systeminfo.h>
/*
@ -592,22 +591,12 @@ vn_open(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2, int x3)
if (fd == -1)
return (errno);
if (fstat64(fd, &st) == -1) {
if (fstat64_blk(fd, &st) == -1) {
err = errno;
close(fd);
return (err);
}
#ifdef __linux__
/* In Linux, use an ioctl to get the size of a block device. */
if (S_ISBLK(st.st_mode)) {
if (ioctl(fd, BLKGETSIZE64, &st.st_size) != 0) {
err = errno;
close(fd);
return (err);
}
}
#endif
(void) fcntl(fd, F_SETFD, FD_CLOEXEC);
*vpp = vp = umem_zalloc(sizeof (vnode_t), UMEM_NOFAIL);
@ -699,10 +688,12 @@ int
fop_getattr(vnode_t *vp, vattr_t *vap)
{
struct stat64 st;
int err;
if (fstat64(vp->v_fd, &st) == -1) {
if (fstat64_blk(vp->v_fd, &st) == -1) {
err = errno;
close(vp->v_fd);
return (errno);
return (err);
}
vap->va_size = st.st_size;