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https://git.proxmox.com/git/mirror_zfs.git
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e06be58641
This commit fixes a sign extension bug affecting l2arc devices. Extremely
large offsets may be passed down to the low level block device driver on
reads, generating errors similar to
attempt to access beyond end of device
sdbi1: rw=14, want=36028797014862705, limit=125026959
The unwanted sign extension occurrs because the function arc_read_nolock()
stores the offset as a daddr_t, a 32-bit signed int type in the Linux kernel.
This offset is then passed to zio_read_phys() as a uint64_t argument, causing
sign extension for values of 0x80000000 or greater. To avoid this, we store
the offset in a uint64_t.
This change also changes a few daddr_t struct members to uint64_t in the libspl
headers to avoid similar bugs cropping up in the future. We also add an ASSERT
to __vdev_disk_physio() to check for invalid offsets.
Closes #66
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
485 lines
14 KiB
C
485 lines
14 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _SYS_DKIO_H
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#define _SYS_DKIO_H
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#include <sys/dklabel.h> /* Needed for NDKMAP define */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Structures and definitions for disk io control commands
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*/
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/*
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* Structures used as data by ioctl calls.
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*/
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#define DK_DEVLEN 16 /* device name max length, including */
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/* unit # & NULL (ie - "xyc1") */
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/*
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* Used for controller info
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*/
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struct dk_cinfo {
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char dki_cname[DK_DEVLEN]; /* controller name (no unit #) */
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ushort_t dki_ctype; /* controller type */
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ushort_t dki_flags; /* flags */
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ushort_t dki_cnum; /* controller number */
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uint_t dki_addr; /* controller address */
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uint_t dki_space; /* controller bus type */
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uint_t dki_prio; /* interrupt priority */
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uint_t dki_vec; /* interrupt vector */
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char dki_dname[DK_DEVLEN]; /* drive name (no unit #) */
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uint_t dki_unit; /* unit number */
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uint_t dki_slave; /* slave number */
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ushort_t dki_partition; /* partition number */
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ushort_t dki_maxtransfer; /* max. transfer size in DEV_BSIZE */
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};
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/*
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* Controller types
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*/
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#define DKC_UNKNOWN 0
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#define DKC_CDROM 1 /* CD-ROM, SCSI or otherwise */
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#define DKC_WDC2880 2
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#define DKC_XXX_0 3 /* unassigned */
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#define DKC_XXX_1 4 /* unassigned */
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#define DKC_DSD5215 5
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#define DKC_ACB4000 7
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#define DKC_MD21 8
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#define DKC_XXX_2 9 /* unassigned */
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#define DKC_NCRFLOPPY 10
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#define DKC_SMSFLOPPY 12
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#define DKC_SCSI_CCS 13 /* SCSI CCS compatible */
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#define DKC_INTEL82072 14 /* native floppy chip */
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#define DKC_MD 16 /* meta-disk (virtual-disk) driver */
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#define DKC_INTEL82077 19 /* 82077 floppy disk controller */
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#define DKC_DIRECT 20 /* Intel direct attached device i.e. IDE */
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#define DKC_PCMCIA_MEM 21 /* PCMCIA memory disk-like type */
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#define DKC_PCMCIA_ATA 22 /* PCMCIA AT Attached type */
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#define DKC_VBD 23 /* virtual block device */
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/*
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* Sun reserves up through 1023
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*/
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#define DKC_CUSTOMER_BASE 1024
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/*
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* Flags
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*/
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#define DKI_BAD144 0x01 /* use DEC std 144 bad sector fwding */
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#define DKI_MAPTRK 0x02 /* controller does track mapping */
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#define DKI_FMTTRK 0x04 /* formats only full track at a time */
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#define DKI_FMTVOL 0x08 /* formats only full volume at a time */
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#define DKI_FMTCYL 0x10 /* formats only full cylinders at a time */
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#define DKI_HEXUNIT 0x20 /* unit number is printed as 3 hex digits */
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#define DKI_PCMCIA_PFD 0x40 /* PCMCIA pseudo-floppy memory card */
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/*
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* Used for all partitions
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*/
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struct dk_allmap {
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struct dk_map dka_map[NDKMAP];
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};
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#if defined(_SYSCALL32)
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struct dk_allmap32 {
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struct dk_map32 dka_map[NDKMAP];
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};
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#endif /* _SYSCALL32 */
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/*
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* Definition of a disk's geometry
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*/
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struct dk_geom {
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unsigned short dkg_ncyl; /* # of data cylinders */
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unsigned short dkg_acyl; /* # of alternate cylinders */
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unsigned short dkg_bcyl; /* cyl offset (for fixed head area) */
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unsigned short dkg_nhead; /* # of heads */
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unsigned short dkg_obs1; /* obsolete */
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unsigned short dkg_nsect; /* # of data sectors per track */
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unsigned short dkg_intrlv; /* interleave factor */
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unsigned short dkg_obs2; /* obsolete */
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unsigned short dkg_obs3; /* obsolete */
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unsigned short dkg_apc; /* alternates per cyl (SCSI only) */
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unsigned short dkg_rpm; /* revolutions per minute */
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unsigned short dkg_pcyl; /* # of physical cylinders */
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unsigned short dkg_write_reinstruct; /* # sectors to skip, writes */
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unsigned short dkg_read_reinstruct; /* # sectors to skip, reads */
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unsigned short dkg_extra[7]; /* for compatible expansion */
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};
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/*
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* These defines are for historic compatibility with old drivers.
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*/
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#define dkg_bhead dkg_obs1 /* used to be head offset */
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#define dkg_gap1 dkg_obs2 /* used to be gap1 */
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#define dkg_gap2 dkg_obs3 /* used to be gap2 */
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/*
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* Disk io control commands
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* Warning: some other ioctls with the DIOC prefix exist elsewhere.
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* The Generic DKIOC numbers are from 0 - 50.
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* The Floppy Driver uses 51 - 100.
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* The Hard Disk (except SCSI) 101 - 106. (these are obsolete)
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* The CDROM Driver 151 - 200.
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* The USCSI ioctl 201 - 250.
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*/
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#define DKIOC (0x04 << 8)
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/*
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* The following ioctls are generic in nature and need to be
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* suported as appropriate by all disk drivers
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*/
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#define DKIOCGGEOM (DKIOC|1) /* Get geometry */
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#define DKIOCINFO (DKIOC|3) /* Get info */
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#define DKIOCEJECT (DKIOC|6) /* Generic 'eject' */
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#define DKIOCGVTOC (DKIOC|11) /* Get VTOC */
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#define DKIOCSVTOC (DKIOC|12) /* Set VTOC & Write to Disk */
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/*
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* Disk Cache Controls. These ioctls should be supported by
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* all disk drivers.
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*
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* DKIOCFLUSHWRITECACHE when used from user-mode ignores the ioctl
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* argument, but it should be passed as NULL to allow for future
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* reinterpretation. From user-mode, this ioctl request is synchronous.
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*
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* When invoked from within the kernel, the arg can be NULL to indicate
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* a synchronous request or can be the address of a struct dk_callback
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* to request an asynchronous callback when the flush request is complete.
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* In this case, the flag to the ioctl must include FKIOCTL and the
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* dkc_callback field of the pointed to struct must be non-null or the
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* request is made synchronously.
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*
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* In the callback case: if the ioctl returns 0, a callback WILL be performed.
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* If the ioctl returns non-zero, a callback will NOT be performed.
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* NOTE: In some cases, the callback may be done BEFORE the ioctl call
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* returns. The caller's locking strategy should be prepared for this case.
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*/
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#define DKIOCFLUSHWRITECACHE (DKIOC|34) /* flush cache to phys medium */
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struct dk_callback {
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void (*dkc_callback)(void *dkc_cookie, int error);
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void *dkc_cookie;
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int dkc_flag;
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};
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/* bit flag definitions for dkc_flag */
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#define FLUSH_VOLATILE 0x1 /* Bit 0: if set, only flush */
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/* volatile cache; otherwise, flush */
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/* volatile and non-volatile cache */
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#define DKIOCGETWCE (DKIOC|36) /* Get current write cache */
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/* enablement status */
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#define DKIOCSETWCE (DKIOC|37) /* Enable/Disable write cache */
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/*
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* The following ioctls are used by Sun drivers to communicate
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* with their associated format routines. Support of these ioctls
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* is not required of foreign drivers
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*/
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#define DKIOCSGEOM (DKIOC|2) /* Set geometry */
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#define DKIOCSAPART (DKIOC|4) /* Set all partitions */
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#define DKIOCGAPART (DKIOC|5) /* Get all partitions */
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#define DKIOCG_PHYGEOM (DKIOC|32) /* get physical geometry */
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#define DKIOCG_VIRTGEOM (DKIOC|33) /* get virtual geometry */
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/*
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* The following ioctl's are removable media support
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*/
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#define DKIOCLOCK (DKIOC|7) /* Generic 'lock' */
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#define DKIOCUNLOCK (DKIOC|8) /* Generic 'unlock' */
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#define DKIOCSTATE (DKIOC|13) /* Inquire insert/eject state */
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#define DKIOCREMOVABLE (DKIOC|16) /* is media removable */
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/*
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* ioctl for hotpluggable devices
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*/
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#define DKIOCHOTPLUGGABLE (DKIOC|35) /* is hotpluggable */
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/*
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* Ioctl to force driver to re-read the alternate partition and rebuild
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* the internal defect map.
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*/
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#define DKIOCADDBAD (DKIOC|20) /* Re-read the alternate map (IDE) */
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#define DKIOCGETDEF (DKIOC|21) /* read defect list (IDE) */
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/*
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* Used by applications to get disk defect information from IDE
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* drives.
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*/
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#ifdef _SYSCALL32
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struct defect_header32 {
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int head;
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caddr32_t buffer;
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};
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#endif /* _SYSCALL32 */
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struct defect_header {
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int head;
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caddr_t buffer;
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};
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#define DKIOCPARTINFO (DKIOC|22) /* Get partition or slice parameters */
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/*
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* Used by applications to get partition or slice information
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*/
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#ifdef _SYSCALL32
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struct part_info32 {
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uint32_t p_start;
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int p_length;
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};
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#endif /* _SYSCALL32 */
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struct part_info {
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uint64_t p_start;
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int p_length;
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};
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/* The following ioctls are for Optical Memory Device */
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#define DKIOC_EBP_ENABLE (DKIOC|40) /* enable by pass erase on write */
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#define DKIOC_EBP_DISABLE (DKIOC|41) /* disable by pass erase on write */
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/*
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* This state enum is the argument passed to the DKIOCSTATE ioctl.
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*/
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enum dkio_state { DKIO_NONE, DKIO_EJECTED, DKIO_INSERTED, DKIO_DEV_GONE };
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#define DKIOCGMEDIAINFO (DKIOC|42) /* get information about the media */
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/*
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* ioctls to read/write mboot info.
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*/
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#define DKIOCGMBOOT (DKIOC|43) /* get mboot info */
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#define DKIOCSMBOOT (DKIOC|44) /* set mboot info */
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/*
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* ioctl to get the device temperature.
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*/
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#define DKIOCGTEMPERATURE (DKIOC|45) /* get temperature */
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/*
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* Used for providing the temperature.
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*/
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struct dk_temperature {
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uint_t dkt_flags; /* Flags */
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short dkt_cur_temp; /* Current disk temperature */
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short dkt_ref_temp; /* reference disk temperature */
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};
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#define DKT_BYPASS_PM 0x1
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#define DKT_INVALID_TEMP 0xFFFF
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/*
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* Used for Media info or the current profile info
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*/
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struct dk_minfo {
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uint_t dki_media_type; /* Media type or profile info */
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uint_t dki_lbsize; /* Logical blocksize of media */
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diskaddr_t dki_capacity; /* Capacity as # of dki_lbsize blks */
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};
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/*
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* Media types or profiles known
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*/
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#define DK_UNKNOWN 0x00 /* Media inserted - type unknown */
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/*
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* SFF 8090 Specification Version 3, media types 0x01 - 0xfffe are retained to
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* maintain compatibility with SFF8090. The following define the
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* optical media type.
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*/
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#define DK_REMOVABLE_DISK 0x02 /* Removable Disk */
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#define DK_MO_ERASABLE 0x03 /* MO Erasable */
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#define DK_MO_WRITEONCE 0x04 /* MO Write once */
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#define DK_AS_MO 0x05 /* AS MO */
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#define DK_CDROM 0x08 /* CDROM */
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#define DK_CDR 0x09 /* CD-R */
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#define DK_CDRW 0x0A /* CD-RW */
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#define DK_DVDROM 0x10 /* DVD-ROM */
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#define DK_DVDR 0x11 /* DVD-R */
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#define DK_DVDRAM 0x12 /* DVD_RAM or DVD-RW */
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/*
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* Media types for other rewritable magnetic media
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*/
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#define DK_FIXED_DISK 0x10001 /* Fixed disk SCSI or otherwise */
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#define DK_FLOPPY 0x10002 /* Floppy media */
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#define DK_ZIP 0x10003 /* IOMEGA ZIP media */
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#define DK_JAZ 0x10004 /* IOMEGA JAZ media */
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#define DKIOCSETEFI (DKIOC|17) /* Set EFI info */
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#define DKIOCGETEFI (DKIOC|18) /* Get EFI info */
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#define DKIOCPARTITION (DKIOC|9) /* Get partition info */
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/*
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* Ioctls to get/set volume capabilities related to Logical Volume Managers.
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* They include the ability to get/set capabilities and to issue a read to a
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* specific underlying device of a replicated device.
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*/
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#define DKIOCGETVOLCAP (DKIOC | 25) /* Get volume capabilities */
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#define DKIOCSETVOLCAP (DKIOC | 26) /* Set volume capabilities */
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#define DKIOCDMR (DKIOC | 27) /* Issue a directed read */
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typedef uint_t volcapinfo_t;
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typedef uint_t volcapset_t;
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#define DKV_ABR_CAP 0x00000001 /* Support Appl.Based Recovery */
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#define DKV_DMR_CAP 0x00000002 /* Support Directed Mirror Read */
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typedef struct volcap {
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volcapinfo_t vc_info; /* Capabilities available */
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volcapset_t vc_set; /* Capabilities set */
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} volcap_t;
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#define VOL_SIDENAME 256
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typedef struct vol_directed_rd {
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int vdr_flags;
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offset_t vdr_offset;
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size_t vdr_nbytes;
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size_t vdr_bytesread;
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void *vdr_data;
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int vdr_side;
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char vdr_side_name[VOL_SIDENAME];
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} vol_directed_rd_t;
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#define DKV_SIDE_INIT (-1)
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#define DKV_DMR_NEXT_SIDE 0x00000001
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#define DKV_DMR_DONE 0x00000002
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#define DKV_DMR_ERROR 0x00000004
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#define DKV_DMR_SUCCESS 0x00000008
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#define DKV_DMR_SHORT 0x00000010
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#ifdef _MULTI_DATAMODEL
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#if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
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#pragma pack(4)
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#endif
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typedef struct vol_directed_rd32 {
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int32_t vdr_flags;
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offset_t vdr_offset; /* 64-bit element on 32-bit alignment */
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size32_t vdr_nbytes;
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size32_t vdr_bytesread;
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caddr32_t vdr_data;
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int32_t vdr_side;
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char vdr_side_name[VOL_SIDENAME];
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} vol_directed_rd32_t;
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#if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
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#pragma pack()
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#endif
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#endif /* _MULTI_DATAMODEL */
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/*
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* The ioctl is used to fetch disk's device type, vendor ID,
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* model number/product ID, firmware revision and serial number together.
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*
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* Currently there are two device types - DKD_ATA_TYPE which means the
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* disk is driven by cmdk/ata or dad/uata driver, and DKD_SCSI_TYPE
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* which means the disk is driven by sd/scsi hba driver.
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*/
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#define DKIOC_GETDISKID (DKIOC|46)
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/* These two labels are for dkd_dtype of dk_disk_id_t */
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#define DKD_ATA_TYPE 0x01 /* ATA disk or legacy mode SATA disk */
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#define DKD_SCSI_TYPE 0x02 /* SCSI disk or native mode SATA disk */
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#define DKD_ATA_MODEL 40 /* model number length */
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#define DKD_ATA_FWVER 8 /* firmware revision length */
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#define DKD_ATA_SERIAL 20 /* serial number length */
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#define DKD_SCSI_VENDOR 8 /* vendor ID length */
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#define DKD_SCSI_PRODUCT 16 /* product ID length */
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#define DKD_SCSI_REVLEVEL 4 /* revision level length */
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#define DKD_SCSI_SERIAL 12 /* serial number length */
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/*
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* The argument type for DKIOC_GETDISKID ioctl.
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*/
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typedef struct dk_disk_id {
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uint_t dkd_dtype;
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union {
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struct {
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char dkd_amodel[DKD_ATA_MODEL]; /* 40 bytes */
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char dkd_afwver[DKD_ATA_FWVER]; /* 8 bytes */
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char dkd_aserial[DKD_ATA_SERIAL]; /* 20 bytes */
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} ata_disk_id;
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struct {
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char dkd_svendor[DKD_SCSI_VENDOR]; /* 8 bytes */
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char dkd_sproduct[DKD_SCSI_PRODUCT]; /* 16 bytes */
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char dkd_sfwver[DKD_SCSI_REVLEVEL]; /* 4 bytes */
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char dkd_sserial[DKD_SCSI_SERIAL]; /* 12 bytes */
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} scsi_disk_id;
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} disk_id;
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} dk_disk_id_t;
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/*
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* The ioctl is used to update the firmware of device.
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*/
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#define DKIOC_UPDATEFW (DKIOC|47)
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/* The argument type for DKIOC_UPDATEFW ioctl */
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typedef struct dk_updatefw {
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caddr_t dku_ptrbuf; /* pointer to firmware buf */
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uint_t dku_size; /* firmware buf length */
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uint8_t dku_type; /* firmware update type */
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} dk_updatefw_t;
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#ifdef _SYSCALL32
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typedef struct dk_updatefw_32 {
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caddr32_t dku_ptrbuf; /* pointer to firmware buf */
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uint_t dku_size; /* firmware buf length */
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|
uint8_t dku_type; /* firmware update type */
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} dk_updatefw_32_t;
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#endif /* _SYSCALL32 */
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|
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/*
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* firmware update type - temporary or permanent use
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|
*/
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#define FW_TYPE_TEMP 0x0 /* temporary use */
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#define FW_TYPE_PERM 0x1 /* permanent use */
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|
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|
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#ifdef __cplusplus
|
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}
|
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#endif
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#endif /* _SYS_DKIO_H */
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