License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 14:07:57 +00:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2005-04-16 22:20:36 +00:00
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/*
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* include/linux/nfs4.h
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*
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* NFSv4 protocol definitions.
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*
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* Copyright (c) 2002 The Regents of the University of Michigan.
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* All rights reserved.
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*
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* Kendrick Smith <kmsmith@umich.edu>
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* Andy Adamson <andros@umich.edu>
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*/
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#ifndef _LINUX_NFS4_H
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#define _LINUX_NFS4_H
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2006-04-25 13:51:45 +00:00
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#include <linux/list.h>
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2013-02-02 13:18:08 +00:00
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#include <linux/uidgid.h>
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2012-10-13 09:46:48 +00:00
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#include <uapi/linux/nfs4.h>
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2006-04-25 13:51:45 +00:00
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2015-03-27 16:50:00 +00:00
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enum nfs4_acl_whotype {
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NFS4_ACL_WHO_NAMED = 0,
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NFS4_ACL_WHO_OWNER,
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NFS4_ACL_WHO_GROUP,
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NFS4_ACL_WHO_EVERYONE,
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};
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2005-04-16 22:20:36 +00:00
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struct nfs4_ace {
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uint32_t type;
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uint32_t flag;
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uint32_t access_mask;
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int whotype;
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2013-02-02 13:18:08 +00:00
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union {
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kuid_t who_uid;
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kgid_t who_gid;
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};
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2005-04-16 22:20:36 +00:00
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};
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struct nfs4_acl {
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uint32_t naces;
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2007-02-16 09:28:30 +00:00
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struct nfs4_ace aces[0];
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2005-04-16 22:20:36 +00:00
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};
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2013-05-22 16:50:40 +00:00
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#define NFS4_MAXLABELLEN 2048
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struct nfs4_label {
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uint32_t lfs;
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uint32_t pi;
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u32 len;
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char *label;
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};
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2005-04-16 22:20:36 +00:00
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typedef struct { char data[NFS4_VERIFIER_SIZE]; } nfs4_verifier;
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2010-10-20 04:17:56 +00:00
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2016-05-16 21:42:43 +00:00
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struct nfs4_stateid_struct {
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union {
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char data[NFS4_STATEID_SIZE];
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struct {
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__be32 seqid;
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char other[NFS4_STATEID_OTHER_SIZE];
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} __attribute__ ((packed));
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};
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enum {
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NFS4_INVALID_STATEID_TYPE = 0,
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NFS4_SPECIAL_STATEID_TYPE,
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NFS4_OPEN_STATEID_TYPE,
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NFS4_LOCK_STATEID_TYPE,
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NFS4_DELEGATION_STATEID_TYPE,
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NFS4_LAYOUT_STATEID_TYPE,
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NFS4_PNFS_DS_STATEID_TYPE,
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2016-09-22 17:39:02 +00:00
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NFS4_REVOKED_STATEID_TYPE,
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2016-05-16 21:42:43 +00:00
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} type;
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};
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2010-10-20 04:17:56 +00:00
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2016-05-16 21:42:43 +00:00
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typedef struct nfs4_stateid_struct nfs4_stateid;
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2005-04-16 22:20:36 +00:00
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enum nfs_opnum4 {
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OP_ACCESS = 3,
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OP_CLOSE = 4,
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OP_COMMIT = 5,
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OP_CREATE = 6,
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OP_DELEGPURGE = 7,
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OP_DELEGRETURN = 8,
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OP_GETATTR = 9,
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OP_GETFH = 10,
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OP_LINK = 11,
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OP_LOCK = 12,
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OP_LOCKT = 13,
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OP_LOCKU = 14,
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OP_LOOKUP = 15,
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OP_LOOKUPP = 16,
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OP_NVERIFY = 17,
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OP_OPEN = 18,
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OP_OPENATTR = 19,
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OP_OPEN_CONFIRM = 20,
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OP_OPEN_DOWNGRADE = 21,
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OP_PUTFH = 22,
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OP_PUTPUBFH = 23,
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OP_PUTROOTFH = 24,
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OP_READ = 25,
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OP_READDIR = 26,
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OP_READLINK = 27,
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OP_REMOVE = 28,
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OP_RENAME = 29,
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OP_RENEW = 30,
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OP_RESTOREFH = 31,
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OP_SAVEFH = 32,
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OP_SECINFO = 33,
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OP_SETATTR = 34,
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OP_SETCLIENTID = 35,
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OP_SETCLIENTID_CONFIRM = 36,
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OP_VERIFY = 37,
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OP_WRITE = 38,
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OP_RELEASE_LOCKOWNER = 39,
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2009-04-03 05:27:36 +00:00
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/* nfs41 */
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OP_BACKCHANNEL_CTL = 40,
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OP_BIND_CONN_TO_SESSION = 41,
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OP_EXCHANGE_ID = 42,
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OP_CREATE_SESSION = 43,
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OP_DESTROY_SESSION = 44,
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OP_FREE_STATEID = 45,
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OP_GET_DIR_DELEGATION = 46,
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OP_GETDEVICEINFO = 47,
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OP_GETDEVICELIST = 48,
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OP_LAYOUTCOMMIT = 49,
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OP_LAYOUTGET = 50,
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OP_LAYOUTRETURN = 51,
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OP_SECINFO_NO_NAME = 52,
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OP_SEQUENCE = 53,
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OP_SET_SSV = 54,
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OP_TEST_STATEID = 55,
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OP_WANT_DELEGATION = 56,
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OP_DESTROY_CLIENTID = 57,
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OP_RECLAIM_COMPLETE = 58,
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2014-09-26 17:58:26 +00:00
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/* nfs42 */
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OP_ALLOCATE = 59,
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OP_COPY = 60,
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OP_COPY_NOTIFY = 61,
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OP_DEALLOCATE = 62,
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OP_IO_ADVISE = 63,
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OP_LAYOUTERROR = 64,
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OP_LAYOUTSTATS = 65,
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OP_OFFLOAD_CANCEL = 66,
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OP_OFFLOAD_STATUS = 67,
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OP_READ_PLUS = 68,
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OP_SEEK = 69,
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OP_WRITE_SAME = 70,
|
2015-09-25 18:24:34 +00:00
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OP_CLONE = 71,
|
2014-09-26 17:58:26 +00:00
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2005-04-16 22:20:36 +00:00
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OP_ILLEGAL = 10044,
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};
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2006-07-10 11:45:44 +00:00
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/*Defining first and last NFS4 operations implemented.
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Needs to be updated if more operations are defined in future.*/
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#define FIRST_NFS4_OP OP_ACCESS
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2013-10-30 17:38:13 +00:00
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#define LAST_NFS40_OP OP_RELEASE_LOCKOWNER
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#define LAST_NFS41_OP OP_RECLAIM_COMPLETE
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2015-12-03 11:59:52 +00:00
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#define LAST_NFS42_OP OP_CLONE
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#define LAST_NFS4_OP LAST_NFS42_OP
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2006-07-10 11:45:44 +00:00
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|
2005-04-16 22:20:36 +00:00
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enum nfsstat4 {
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NFS4_OK = 0,
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NFS4ERR_PERM = 1,
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NFS4ERR_NOENT = 2,
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NFS4ERR_IO = 5,
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NFS4ERR_NXIO = 6,
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NFS4ERR_ACCESS = 13,
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NFS4ERR_EXIST = 17,
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NFS4ERR_XDEV = 18,
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/* Unused/reserved 19 */
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NFS4ERR_NOTDIR = 20,
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NFS4ERR_ISDIR = 21,
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NFS4ERR_INVAL = 22,
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NFS4ERR_FBIG = 27,
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NFS4ERR_NOSPC = 28,
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NFS4ERR_ROFS = 30,
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NFS4ERR_MLINK = 31,
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NFS4ERR_NAMETOOLONG = 63,
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NFS4ERR_NOTEMPTY = 66,
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NFS4ERR_DQUOT = 69,
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NFS4ERR_STALE = 70,
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NFS4ERR_BADHANDLE = 10001,
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NFS4ERR_BAD_COOKIE = 10003,
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NFS4ERR_NOTSUPP = 10004,
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NFS4ERR_TOOSMALL = 10005,
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NFS4ERR_SERVERFAULT = 10006,
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NFS4ERR_BADTYPE = 10007,
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NFS4ERR_DELAY = 10008,
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NFS4ERR_SAME = 10009,
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NFS4ERR_DENIED = 10010,
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NFS4ERR_EXPIRED = 10011,
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NFS4ERR_LOCKED = 10012,
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NFS4ERR_GRACE = 10013,
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NFS4ERR_FHEXPIRED = 10014,
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NFS4ERR_SHARE_DENIED = 10015,
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NFS4ERR_WRONGSEC = 10016,
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NFS4ERR_CLID_INUSE = 10017,
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NFS4ERR_RESOURCE = 10018,
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NFS4ERR_MOVED = 10019,
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NFS4ERR_NOFILEHANDLE = 10020,
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NFS4ERR_MINOR_VERS_MISMATCH = 10021,
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NFS4ERR_STALE_CLIENTID = 10022,
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NFS4ERR_STALE_STATEID = 10023,
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NFS4ERR_OLD_STATEID = 10024,
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NFS4ERR_BAD_STATEID = 10025,
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NFS4ERR_BAD_SEQID = 10026,
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NFS4ERR_NOT_SAME = 10027,
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NFS4ERR_LOCK_RANGE = 10028,
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NFS4ERR_SYMLINK = 10029,
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NFS4ERR_RESTOREFH = 10030,
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NFS4ERR_LEASE_MOVED = 10031,
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NFS4ERR_ATTRNOTSUPP = 10032,
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NFS4ERR_NO_GRACE = 10033,
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NFS4ERR_RECLAIM_BAD = 10034,
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NFS4ERR_RECLAIM_CONFLICT = 10035,
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NFS4ERR_BADXDR = 10036,
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NFS4ERR_LOCKS_HELD = 10037,
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NFS4ERR_OPENMODE = 10038,
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NFS4ERR_BADOWNER = 10039,
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NFS4ERR_BADCHAR = 10040,
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NFS4ERR_BADNAME = 10041,
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NFS4ERR_BAD_RANGE = 10042,
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NFS4ERR_LOCK_NOTSUPP = 10043,
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NFS4ERR_OP_ILLEGAL = 10044,
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NFS4ERR_DEADLOCK = 10045,
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NFS4ERR_FILE_OPEN = 10046,
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NFS4ERR_ADMIN_REVOKED = 10047,
|
2009-04-03 05:27:36 +00:00
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NFS4ERR_CB_PATH_DOWN = 10048,
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/* nfs41 */
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|
|
NFS4ERR_BADIOMODE = 10049,
|
|
|
|
|
NFS4ERR_BADLAYOUT = 10050,
|
|
|
|
|
NFS4ERR_BAD_SESSION_DIGEST = 10051,
|
|
|
|
|
NFS4ERR_BADSESSION = 10052,
|
|
|
|
|
NFS4ERR_BADSLOT = 10053,
|
|
|
|
|
NFS4ERR_COMPLETE_ALREADY = 10054,
|
|
|
|
|
NFS4ERR_CONN_NOT_BOUND_TO_SESSION = 10055,
|
|
|
|
|
NFS4ERR_DELEG_ALREADY_WANTED = 10056,
|
|
|
|
|
NFS4ERR_BACK_CHAN_BUSY = 10057, /* backchan reqs outstanding */
|
|
|
|
|
NFS4ERR_LAYOUTTRYLATER = 10058,
|
|
|
|
|
NFS4ERR_LAYOUTUNAVAILABLE = 10059,
|
|
|
|
|
NFS4ERR_NOMATCHING_LAYOUT = 10060,
|
|
|
|
|
NFS4ERR_RECALLCONFLICT = 10061,
|
|
|
|
|
NFS4ERR_UNKNOWN_LAYOUTTYPE = 10062,
|
|
|
|
|
NFS4ERR_SEQ_MISORDERED = 10063, /* unexpected seq.id in req */
|
|
|
|
|
NFS4ERR_SEQUENCE_POS = 10064, /* [CB_]SEQ. op not 1st op */
|
|
|
|
|
NFS4ERR_REQ_TOO_BIG = 10065, /* request too big */
|
|
|
|
|
NFS4ERR_REP_TOO_BIG = 10066, /* reply too big */
|
|
|
|
|
NFS4ERR_REP_TOO_BIG_TO_CACHE = 10067, /* rep. not all cached */
|
|
|
|
|
NFS4ERR_RETRY_UNCACHED_REP = 10068, /* retry & rep. uncached */
|
|
|
|
|
NFS4ERR_UNSAFE_COMPOUND = 10069, /* retry/recovery too hard */
|
|
|
|
|
NFS4ERR_TOO_MANY_OPS = 10070, /* too many ops in [CB_]COMP */
|
|
|
|
|
NFS4ERR_OP_NOT_IN_SESSION = 10071, /* op needs [CB_]SEQ. op */
|
|
|
|
|
NFS4ERR_HASH_ALG_UNSUPP = 10072, /* hash alg. not supp. */
|
|
|
|
|
/* Error 10073 is unused. */
|
|
|
|
|
NFS4ERR_CLIENTID_BUSY = 10074, /* clientid has state */
|
|
|
|
|
NFS4ERR_PNFS_IO_HOLE = 10075, /* IO to _SPARSE file hole */
|
2011-03-31 01:57:33 +00:00
|
|
|
NFS4ERR_SEQ_FALSE_RETRY = 10076, /* retry not original */
|
2009-04-03 05:27:36 +00:00
|
|
|
NFS4ERR_BAD_HIGH_SLOT = 10077, /* sequence arg bad */
|
|
|
|
|
NFS4ERR_DEADSESSION = 10078, /* persistent session dead */
|
|
|
|
|
NFS4ERR_ENCR_ALG_UNSUPP = 10079, /* SSV alg mismatch */
|
|
|
|
|
NFS4ERR_PNFS_NO_LAYOUT = 10080, /* direct I/O with no layout */
|
|
|
|
|
NFS4ERR_NOT_ONLY_OP = 10081, /* bad compound */
|
|
|
|
|
NFS4ERR_WRONG_CRED = 10082, /* permissions:state change */
|
|
|
|
|
NFS4ERR_WRONG_TYPE = 10083, /* current operation mismatch */
|
|
|
|
|
NFS4ERR_DIRDELEG_UNAVAIL = 10084, /* no directory delegation */
|
|
|
|
|
NFS4ERR_REJECT_DELEG = 10085, /* on callback */
|
|
|
|
|
NFS4ERR_RETURNCONFLICT = 10086, /* outstanding layoutreturn */
|
|
|
|
|
NFS4ERR_DELEG_REVOKED = 10087, /* deleg./layout revoked */
|
2013-05-02 17:18:55 +00:00
|
|
|
|
|
|
|
|
/* nfs42 */
|
|
|
|
|
NFS4ERR_PARTNER_NOTSUPP = 10088,
|
|
|
|
|
NFS4ERR_PARTNER_NO_AUTH = 10089,
|
2014-08-27 15:17:56 +00:00
|
|
|
NFS4ERR_UNION_NOTSUPP = 10090,
|
2013-05-02 17:18:55 +00:00
|
|
|
NFS4ERR_OFFLOAD_DENIED = 10091,
|
|
|
|
|
NFS4ERR_WRONG_LFS = 10092,
|
|
|
|
|
NFS4ERR_BADLABEL = 10093,
|
2014-08-27 15:17:56 +00:00
|
|
|
NFS4ERR_OFFLOAD_NO_REQS = 10094,
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
|
|
|
|
|
2011-08-23 19:43:04 +00:00
|
|
|
static inline bool seqid_mutating_err(u32 err)
|
|
|
|
|
{
|
2017-01-22 19:04:29 +00:00
|
|
|
/* See RFC 7530, section 9.1.7 */
|
2011-08-23 19:43:04 +00:00
|
|
|
switch (err) {
|
|
|
|
|
case NFS4ERR_STALE_CLIENTID:
|
|
|
|
|
case NFS4ERR_STALE_STATEID:
|
|
|
|
|
case NFS4ERR_BAD_STATEID:
|
|
|
|
|
case NFS4ERR_BAD_SEQID:
|
|
|
|
|
case NFS4ERR_BADXDR:
|
|
|
|
|
case NFS4ERR_RESOURCE:
|
|
|
|
|
case NFS4ERR_NOFILEHANDLE:
|
2017-01-22 19:04:29 +00:00
|
|
|
case NFS4ERR_MOVED:
|
2011-08-23 19:43:04 +00:00
|
|
|
return false;
|
|
|
|
|
};
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/*
|
|
|
|
|
* Note: NF4BAD is not actually part of the protocol; it is just used
|
|
|
|
|
* internally by nfsd.
|
|
|
|
|
*/
|
|
|
|
|
enum nfs_ftype4 {
|
|
|
|
|
NF4BAD = 0,
|
|
|
|
|
NF4REG = 1, /* Regular File */
|
|
|
|
|
NF4DIR = 2, /* Directory */
|
|
|
|
|
NF4BLK = 3, /* Special File - block device */
|
|
|
|
|
NF4CHR = 4, /* Special File - character device */
|
|
|
|
|
NF4LNK = 5, /* Symbolic Link */
|
|
|
|
|
NF4SOCK = 6, /* Special File - socket */
|
|
|
|
|
NF4FIFO = 7, /* Special File - fifo */
|
|
|
|
|
NF4ATTRDIR = 8, /* Attribute Directory */
|
|
|
|
|
NF4NAMEDATTR = 9 /* Named Attribute */
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
enum open_claim_type4 {
|
|
|
|
|
NFS4_OPEN_CLAIM_NULL = 0,
|
|
|
|
|
NFS4_OPEN_CLAIM_PREVIOUS = 1,
|
|
|
|
|
NFS4_OPEN_CLAIM_DELEGATE_CUR = 2,
|
2011-10-19 15:52:12 +00:00
|
|
|
NFS4_OPEN_CLAIM_DELEGATE_PREV = 3,
|
|
|
|
|
NFS4_OPEN_CLAIM_FH = 4, /* 4.1 */
|
|
|
|
|
NFS4_OPEN_CLAIM_DELEG_CUR_FH = 5, /* 4.1 */
|
|
|
|
|
NFS4_OPEN_CLAIM_DELEG_PREV_FH = 6, /* 4.1 */
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
enum opentype4 {
|
|
|
|
|
NFS4_OPEN_NOCREATE = 0,
|
|
|
|
|
NFS4_OPEN_CREATE = 1
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
enum createmode4 {
|
|
|
|
|
NFS4_CREATE_UNCHECKED = 0,
|
|
|
|
|
NFS4_CREATE_GUARDED = 1,
|
2009-04-03 05:29:17 +00:00
|
|
|
NFS4_CREATE_EXCLUSIVE = 2,
|
|
|
|
|
/*
|
|
|
|
|
* New to NFSv4.1. If session is persistent,
|
|
|
|
|
* GUARDED4 MUST be used. Otherwise, use
|
|
|
|
|
* EXCLUSIVE4_1 instead of EXCLUSIVE4.
|
|
|
|
|
*/
|
|
|
|
|
NFS4_CREATE_EXCLUSIVE4_1 = 3
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
enum limit_by4 {
|
|
|
|
|
NFS4_LIMIT_SIZE = 1,
|
|
|
|
|
NFS4_LIMIT_BLOCKS = 2
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
enum open_delegation_type4 {
|
|
|
|
|
NFS4_OPEN_DELEGATE_NONE = 0,
|
|
|
|
|
NFS4_OPEN_DELEGATE_READ = 1,
|
2012-02-16 18:57:17 +00:00
|
|
|
NFS4_OPEN_DELEGATE_WRITE = 2,
|
|
|
|
|
NFS4_OPEN_DELEGATE_NONE_EXT = 3, /* 4.1 */
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
enum why_no_delegation4 { /* new to v4.1 */
|
|
|
|
|
WND4_NOT_WANTED = 0,
|
|
|
|
|
WND4_CONTENTION = 1,
|
|
|
|
|
WND4_RESOURCE = 2,
|
|
|
|
|
WND4_NOT_SUPP_FTYPE = 3,
|
|
|
|
|
WND4_WRITE_DELEG_NOT_SUPP_FTYPE = 4,
|
|
|
|
|
WND4_NOT_SUPP_UPGRADE = 5,
|
|
|
|
|
WND4_NOT_SUPP_DOWNGRADE = 6,
|
|
|
|
|
WND4_CANCELLED = 7,
|
|
|
|
|
WND4_IS_DIR = 8,
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
enum lock_type4 {
|
|
|
|
|
NFS4_UNLOCK_LT = 0,
|
|
|
|
|
NFS4_READ_LT = 1,
|
|
|
|
|
NFS4_WRITE_LT = 2,
|
|
|
|
|
NFS4_READW_LT = 3,
|
|
|
|
|
NFS4_WRITEW_LT = 4
|
|
|
|
|
};
|
|
|
|
|
|
2018-04-25 17:26:23 +00:00
|
|
|
enum change_attr_type4 {
|
|
|
|
|
NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR = 0,
|
|
|
|
|
NFS4_CHANGE_TYPE_IS_VERSION_COUNTER = 1,
|
|
|
|
|
NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS = 2,
|
|
|
|
|
NFS4_CHANGE_TYPE_IS_TIME_METADATA = 3,
|
|
|
|
|
NFS4_CHANGE_TYPE_IS_UNDEFINED = 4
|
|
|
|
|
};
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
/* Mandatory Attributes */
|
|
|
|
|
#define FATTR4_WORD0_SUPPORTED_ATTRS (1UL << 0)
|
|
|
|
|
#define FATTR4_WORD0_TYPE (1UL << 1)
|
|
|
|
|
#define FATTR4_WORD0_FH_EXPIRE_TYPE (1UL << 2)
|
|
|
|
|
#define FATTR4_WORD0_CHANGE (1UL << 3)
|
|
|
|
|
#define FATTR4_WORD0_SIZE (1UL << 4)
|
|
|
|
|
#define FATTR4_WORD0_LINK_SUPPORT (1UL << 5)
|
|
|
|
|
#define FATTR4_WORD0_SYMLINK_SUPPORT (1UL << 6)
|
|
|
|
|
#define FATTR4_WORD0_NAMED_ATTR (1UL << 7)
|
|
|
|
|
#define FATTR4_WORD0_FSID (1UL << 8)
|
|
|
|
|
#define FATTR4_WORD0_UNIQUE_HANDLES (1UL << 9)
|
|
|
|
|
#define FATTR4_WORD0_LEASE_TIME (1UL << 10)
|
|
|
|
|
#define FATTR4_WORD0_RDATTR_ERROR (1UL << 11)
|
2009-04-03 05:29:14 +00:00
|
|
|
/* Mandatory in NFSv4.1 */
|
|
|
|
|
#define FATTR4_WORD2_SUPPATTR_EXCLCREAT (1UL << 11)
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
/* Recommended Attributes */
|
|
|
|
|
#define FATTR4_WORD0_ACL (1UL << 12)
|
|
|
|
|
#define FATTR4_WORD0_ACLSUPPORT (1UL << 13)
|
|
|
|
|
#define FATTR4_WORD0_ARCHIVE (1UL << 14)
|
|
|
|
|
#define FATTR4_WORD0_CANSETTIME (1UL << 15)
|
|
|
|
|
#define FATTR4_WORD0_CASE_INSENSITIVE (1UL << 16)
|
|
|
|
|
#define FATTR4_WORD0_CASE_PRESERVING (1UL << 17)
|
|
|
|
|
#define FATTR4_WORD0_CHOWN_RESTRICTED (1UL << 18)
|
|
|
|
|
#define FATTR4_WORD0_FILEHANDLE (1UL << 19)
|
|
|
|
|
#define FATTR4_WORD0_FILEID (1UL << 20)
|
|
|
|
|
#define FATTR4_WORD0_FILES_AVAIL (1UL << 21)
|
|
|
|
|
#define FATTR4_WORD0_FILES_FREE (1UL << 22)
|
|
|
|
|
#define FATTR4_WORD0_FILES_TOTAL (1UL << 23)
|
|
|
|
|
#define FATTR4_WORD0_FS_LOCATIONS (1UL << 24)
|
|
|
|
|
#define FATTR4_WORD0_HIDDEN (1UL << 25)
|
|
|
|
|
#define FATTR4_WORD0_HOMOGENEOUS (1UL << 26)
|
|
|
|
|
#define FATTR4_WORD0_MAXFILESIZE (1UL << 27)
|
|
|
|
|
#define FATTR4_WORD0_MAXLINK (1UL << 28)
|
|
|
|
|
#define FATTR4_WORD0_MAXNAME (1UL << 29)
|
|
|
|
|
#define FATTR4_WORD0_MAXREAD (1UL << 30)
|
|
|
|
|
#define FATTR4_WORD0_MAXWRITE (1UL << 31)
|
|
|
|
|
#define FATTR4_WORD1_MIMETYPE (1UL << 0)
|
|
|
|
|
#define FATTR4_WORD1_MODE (1UL << 1)
|
|
|
|
|
#define FATTR4_WORD1_NO_TRUNC (1UL << 2)
|
|
|
|
|
#define FATTR4_WORD1_NUMLINKS (1UL << 3)
|
|
|
|
|
#define FATTR4_WORD1_OWNER (1UL << 4)
|
|
|
|
|
#define FATTR4_WORD1_OWNER_GROUP (1UL << 5)
|
|
|
|
|
#define FATTR4_WORD1_QUOTA_HARD (1UL << 6)
|
|
|
|
|
#define FATTR4_WORD1_QUOTA_SOFT (1UL << 7)
|
|
|
|
|
#define FATTR4_WORD1_QUOTA_USED (1UL << 8)
|
|
|
|
|
#define FATTR4_WORD1_RAWDEV (1UL << 9)
|
|
|
|
|
#define FATTR4_WORD1_SPACE_AVAIL (1UL << 10)
|
|
|
|
|
#define FATTR4_WORD1_SPACE_FREE (1UL << 11)
|
|
|
|
|
#define FATTR4_WORD1_SPACE_TOTAL (1UL << 12)
|
|
|
|
|
#define FATTR4_WORD1_SPACE_USED (1UL << 13)
|
|
|
|
|
#define FATTR4_WORD1_SYSTEM (1UL << 14)
|
|
|
|
|
#define FATTR4_WORD1_TIME_ACCESS (1UL << 15)
|
|
|
|
|
#define FATTR4_WORD1_TIME_ACCESS_SET (1UL << 16)
|
|
|
|
|
#define FATTR4_WORD1_TIME_BACKUP (1UL << 17)
|
|
|
|
|
#define FATTR4_WORD1_TIME_CREATE (1UL << 18)
|
|
|
|
|
#define FATTR4_WORD1_TIME_DELTA (1UL << 19)
|
|
|
|
|
#define FATTR4_WORD1_TIME_METADATA (1UL << 20)
|
|
|
|
|
#define FATTR4_WORD1_TIME_MODIFY (1UL << 21)
|
|
|
|
|
#define FATTR4_WORD1_TIME_MODIFY_SET (1UL << 22)
|
|
|
|
|
#define FATTR4_WORD1_MOUNTED_ON_FILEID (1UL << 23)
|
2010-10-20 04:17:55 +00:00
|
|
|
#define FATTR4_WORD1_FS_LAYOUT_TYPES (1UL << 30)
|
nfsd: implement pNFS operations
Add support for the GETDEVICEINFO, LAYOUTGET, LAYOUTCOMMIT and
LAYOUTRETURN NFSv4.1 operations, as well as backing code to manage
outstanding layouts and devices.
Layout management is very straight forward, with a nfs4_layout_stateid
structure that extends nfs4_stid to manage layout stateids as the
top-level structure. It is linked into the nfs4_file and nfs4_client
structures like the other stateids, and contains a linked list of
layouts that hang of the stateid. The actual layout operations are
implemented in layout drivers that are not part of this commit, but
will be added later.
The worst part of this commit is the management of the pNFS device IDs,
which suffers from a specification that is not sanely implementable due
to the fact that the device-IDs are global and not bound to an export,
and have a small enough size so that we can't store the fsid portion of
a file handle, and must never be reused. As we still do need perform all
export authentication and validation checks on a device ID passed to
GETDEVICEINFO we are caught between a rock and a hard place. To work
around this issue we add a new hash that maps from a 64-bit integer to a
fsid so that we can look up the export to authenticate against it,
a 32-bit integer as a generation that we can bump when changing the device,
and a currently unused 32-bit integer that could be used in the future
to handle more than a single device per export. Entries in this hash
table are never deleted as we can't reuse the ids anyway, and would have
a severe lifetime problem anyway as Linux export structures are temporary
structures that can go away under load.
Parts of the XDR data, structures and marshaling/unmarshaling code, as
well as many concepts are derived from the old pNFS server implementation
from Andy Adamson, Benny Halevy, Dean Hildebrand, Marc Eshel, Fred Isaman,
Mike Sager, Ricardo Labiaga and many others.
Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-05-05 11:11:59 +00:00
|
|
|
#define FATTR4_WORD2_LAYOUT_TYPES (1UL << 0)
|
2010-10-20 04:17:55 +00:00
|
|
|
#define FATTR4_WORD2_LAYOUT_BLKSIZE (1UL << 1)
|
2012-05-23 09:02:34 +00:00
|
|
|
#define FATTR4_WORD2_MDSTHRESHOLD (1UL << 4)
|
2015-09-25 18:24:37 +00:00
|
|
|
#define FATTR4_WORD2_CLONE_BLKSIZE (1UL << 13)
|
2018-04-25 17:26:23 +00:00
|
|
|
#define FATTR4_WORD2_CHANGE_ATTR_TYPE (1UL << 15)
|
2013-11-04 19:38:05 +00:00
|
|
|
#define FATTR4_WORD2_SECURITY_LABEL (1UL << 16)
|
2016-12-03 03:53:30 +00:00
|
|
|
#define FATTR4_WORD2_MODE_UMASK (1UL << 17)
|
2012-05-23 09:02:34 +00:00
|
|
|
|
|
|
|
|
/* MDS threshold bitmap bits */
|
|
|
|
|
#define THRESHOLD_RD (1UL << 0)
|
|
|
|
|
#define THRESHOLD_WR (1UL << 1)
|
|
|
|
|
#define THRESHOLD_RD_IO (1UL << 2)
|
|
|
|
|
#define THRESHOLD_WR_IO (1UL << 3)
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
#define NFSPROC4_NULL 0
|
|
|
|
|
#define NFSPROC4_COMPOUND 1
|
2009-09-08 23:50:03 +00:00
|
|
|
#define NFS4_VERSION 4
|
2005-04-16 22:20:36 +00:00
|
|
|
#define NFS4_MINOR_VERSION 0
|
2009-04-01 13:21:47 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
#define NFS4_DEBUG 1
|
|
|
|
|
|
2018-01-06 14:53:49 +00:00
|
|
|
/*
|
|
|
|
|
* Index of predefined Linux client operations
|
|
|
|
|
*
|
|
|
|
|
* To ensure that /proc/net/rpc/nfs remains correctly ordered, please
|
|
|
|
|
* append only to this enum when adding new client operations.
|
|
|
|
|
*/
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
enum {
|
|
|
|
|
NFSPROC4_CLNT_NULL = 0, /* Unused */
|
|
|
|
|
NFSPROC4_CLNT_READ,
|
|
|
|
|
NFSPROC4_CLNT_WRITE,
|
|
|
|
|
NFSPROC4_CLNT_COMMIT,
|
|
|
|
|
NFSPROC4_CLNT_OPEN,
|
|
|
|
|
NFSPROC4_CLNT_OPEN_CONFIRM,
|
|
|
|
|
NFSPROC4_CLNT_OPEN_NOATTR,
|
|
|
|
|
NFSPROC4_CLNT_OPEN_DOWNGRADE,
|
|
|
|
|
NFSPROC4_CLNT_CLOSE,
|
|
|
|
|
NFSPROC4_CLNT_SETATTR,
|
|
|
|
|
NFSPROC4_CLNT_FSINFO,
|
|
|
|
|
NFSPROC4_CLNT_RENEW,
|
|
|
|
|
NFSPROC4_CLNT_SETCLIENTID,
|
|
|
|
|
NFSPROC4_CLNT_SETCLIENTID_CONFIRM,
|
|
|
|
|
NFSPROC4_CLNT_LOCK,
|
|
|
|
|
NFSPROC4_CLNT_LOCKT,
|
|
|
|
|
NFSPROC4_CLNT_LOCKU,
|
|
|
|
|
NFSPROC4_CLNT_ACCESS,
|
|
|
|
|
NFSPROC4_CLNT_GETATTR,
|
|
|
|
|
NFSPROC4_CLNT_LOOKUP,
|
|
|
|
|
NFSPROC4_CLNT_LOOKUP_ROOT,
|
|
|
|
|
NFSPROC4_CLNT_REMOVE,
|
|
|
|
|
NFSPROC4_CLNT_RENAME,
|
|
|
|
|
NFSPROC4_CLNT_LINK,
|
|
|
|
|
NFSPROC4_CLNT_SYMLINK,
|
|
|
|
|
NFSPROC4_CLNT_CREATE,
|
|
|
|
|
NFSPROC4_CLNT_PATHCONF,
|
|
|
|
|
NFSPROC4_CLNT_STATFS,
|
|
|
|
|
NFSPROC4_CLNT_READLINK,
|
|
|
|
|
NFSPROC4_CLNT_READDIR,
|
|
|
|
|
NFSPROC4_CLNT_SERVER_CAPS,
|
|
|
|
|
NFSPROC4_CLNT_DELEGRETURN,
|
2005-06-22 17:16:22 +00:00
|
|
|
NFSPROC4_CLNT_GETACL,
|
2005-06-22 17:16:22 +00:00
|
|
|
NFSPROC4_CLNT_SETACL,
|
2006-06-09 13:34:22 +00:00
|
|
|
NFSPROC4_CLNT_FS_LOCATIONS,
|
2010-07-01 16:49:01 +00:00
|
|
|
NFSPROC4_CLNT_RELEASE_LOCKOWNER,
|
2011-03-24 17:12:29 +00:00
|
|
|
NFSPROC4_CLNT_SECINFO,
|
2013-10-17 18:13:30 +00:00
|
|
|
NFSPROC4_CLNT_FSID_PRESENT,
|
2009-04-03 05:27:36 +00:00
|
|
|
|
|
|
|
|
NFSPROC4_CLNT_EXCHANGE_ID,
|
|
|
|
|
NFSPROC4_CLNT_CREATE_SESSION,
|
|
|
|
|
NFSPROC4_CLNT_DESTROY_SESSION,
|
|
|
|
|
NFSPROC4_CLNT_SEQUENCE,
|
|
|
|
|
NFSPROC4_CLNT_GET_LEASE_TIME,
|
2009-12-05 21:08:40 +00:00
|
|
|
NFSPROC4_CLNT_RECLAIM_COMPLETE,
|
2010-10-20 04:18:03 +00:00
|
|
|
NFSPROC4_CLNT_LAYOUTGET,
|
|
|
|
|
NFSPROC4_CLNT_GETDEVICEINFO,
|
2011-03-23 13:27:54 +00:00
|
|
|
NFSPROC4_CLNT_LAYOUTCOMMIT,
|
2011-05-22 16:52:37 +00:00
|
|
|
NFSPROC4_CLNT_LAYOUTRETURN,
|
2011-06-02 18:59:07 +00:00
|
|
|
NFSPROC4_CLNT_SECINFO_NO_NAME,
|
2011-06-02 18:59:08 +00:00
|
|
|
NFSPROC4_CLNT_TEST_STATEID,
|
2011-06-02 18:59:09 +00:00
|
|
|
NFSPROC4_CLNT_FREE_STATEID,
|
2011-07-31 00:52:35 +00:00
|
|
|
NFSPROC4_CLNT_GETDEVICELIST,
|
2012-05-25 21:11:42 +00:00
|
|
|
NFSPROC4_CLNT_BIND_CONN_TO_SESSION,
|
2012-05-25 21:18:09 +00:00
|
|
|
NFSPROC4_CLNT_DESTROY_CLIENTID,
|
2014-09-26 17:58:48 +00:00
|
|
|
|
|
|
|
|
NFSPROC4_CLNT_SEEK,
|
2014-11-25 18:18:15 +00:00
|
|
|
NFSPROC4_CLNT_ALLOCATE,
|
2014-11-25 18:18:16 +00:00
|
|
|
NFSPROC4_CLNT_DEALLOCATE,
|
2015-06-23 11:51:55 +00:00
|
|
|
NFSPROC4_CLNT_LAYOUTSTATS,
|
2015-09-25 18:24:34 +00:00
|
|
|
NFSPROC4_CLNT_CLONE,
|
2013-05-21 20:53:03 +00:00
|
|
|
NFSPROC4_CLNT_COPY,
|
2018-07-09 19:13:29 +00:00
|
|
|
NFSPROC4_CLNT_OFFLOAD_CANCEL,
|
2018-01-06 14:53:49 +00:00
|
|
|
|
|
|
|
|
NFSPROC4_CLNT_LOOKUPP,
|
2019-02-08 15:31:05 +00:00
|
|
|
NFSPROC4_CLNT_LAYOUTERROR,
|
2009-04-03 05:27:36 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* nfs41 types */
|
|
|
|
|
struct nfs4_sessionid {
|
|
|
|
|
unsigned char data[NFS4_MAX_SESSIONID_LEN];
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* Create Session Flags */
|
2011-03-23 09:57:07 +00:00
|
|
|
#define SESSION4_PERSIST 0x001
|
|
|
|
|
#define SESSION4_BACK_CHAN 0x002
|
|
|
|
|
#define SESSION4_RDMA 0x004
|
|
|
|
|
|
|
|
|
|
#define SESSION4_FLAG_MASK_A 0x007
|
2009-04-03 05:27:36 +00:00
|
|
|
|
|
|
|
|
enum state_protect_how4 {
|
|
|
|
|
SP4_NONE = 0,
|
|
|
|
|
SP4_MACH_CRED = 1,
|
|
|
|
|
SP4_SSV = 2
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
|
|
|
|
|
2010-10-20 04:17:55 +00:00
|
|
|
enum pnfs_layouttype {
|
|
|
|
|
LAYOUT_NFSV4_1_FILES = 1,
|
|
|
|
|
LAYOUT_OSD2_OBJECTS = 2,
|
|
|
|
|
LAYOUT_BLOCK_VOLUME = 3,
|
2014-12-11 22:02:04 +00:00
|
|
|
LAYOUT_FLEX_FILES = 4,
|
2016-03-04 19:46:14 +00:00
|
|
|
LAYOUT_SCSI = 5,
|
2014-08-16 11:31:51 +00:00
|
|
|
LAYOUT_TYPE_MAX
|
2010-10-20 04:17:55 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* used for both layout return and recall */
|
|
|
|
|
enum pnfs_layoutreturn_type {
|
|
|
|
|
RETURN_FILE = 1,
|
|
|
|
|
RETURN_FSID = 2,
|
|
|
|
|
RETURN_ALL = 3
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
enum pnfs_iomode {
|
|
|
|
|
IOMODE_READ = 1,
|
|
|
|
|
IOMODE_RW = 2,
|
|
|
|
|
IOMODE_ANY = 3,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
enum pnfs_notify_deviceid_type4 {
|
|
|
|
|
NOTIFY_DEVICEID4_CHANGE = 1 << 1,
|
|
|
|
|
NOTIFY_DEVICEID4_DELETE = 1 << 2,
|
|
|
|
|
};
|
|
|
|
|
|
2015-08-17 16:41:01 +00:00
|
|
|
enum pnfs_block_volume_type {
|
|
|
|
|
PNFS_BLOCK_VOLUME_SIMPLE = 0,
|
|
|
|
|
PNFS_BLOCK_VOLUME_SLICE = 1,
|
|
|
|
|
PNFS_BLOCK_VOLUME_CONCAT = 2,
|
|
|
|
|
PNFS_BLOCK_VOLUME_STRIPE = 3,
|
2016-03-04 19:46:14 +00:00
|
|
|
PNFS_BLOCK_VOLUME_SCSI = 4,
|
2015-08-17 16:41:01 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
enum pnfs_block_extent_state {
|
|
|
|
|
PNFS_BLOCK_READWRITE_DATA = 0,
|
|
|
|
|
PNFS_BLOCK_READ_DATA = 1,
|
|
|
|
|
PNFS_BLOCK_INVALID_DATA = 2,
|
|
|
|
|
PNFS_BLOCK_NONE_DATA = 3,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* on the wire size of a block layout extent */
|
|
|
|
|
#define PNFS_BLOCK_EXTENT_SIZE \
|
|
|
|
|
(7 * sizeof(__be32) + NFS4_DEVICEID4_SIZE)
|
|
|
|
|
|
2016-03-04 19:46:14 +00:00
|
|
|
/* on the wire size of a scsi commit range */
|
|
|
|
|
#define PNFS_SCSI_RANGE_SIZE \
|
|
|
|
|
(4 * sizeof(__be32))
|
|
|
|
|
|
|
|
|
|
enum scsi_code_set {
|
|
|
|
|
PS_CODE_SET_BINARY = 1,
|
|
|
|
|
PS_CODE_SET_ASCII = 2,
|
|
|
|
|
PS_CODE_SET_UTF8 = 3
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
enum scsi_designator_type {
|
|
|
|
|
PS_DESIGNATOR_T10 = 1,
|
|
|
|
|
PS_DESIGNATOR_EUI64 = 2,
|
|
|
|
|
PS_DESIGNATOR_NAA = 3,
|
|
|
|
|
PS_DESIGNATOR_NAME = 8
|
|
|
|
|
};
|
|
|
|
|
|
2010-10-20 04:17:55 +00:00
|
|
|
#define NFL4_UFLG_MASK 0x0000003F
|
|
|
|
|
#define NFL4_UFLG_DENSE 0x00000001
|
|
|
|
|
#define NFL4_UFLG_COMMIT_THRU_MDS 0x00000002
|
|
|
|
|
#define NFL4_UFLG_STRIPE_UNIT_SIZE_MASK 0xFFFFFFC0
|
|
|
|
|
|
|
|
|
|
/* Encoded in the loh_body field of type layouthint4 */
|
|
|
|
|
enum filelayout_hint_care4 {
|
|
|
|
|
NFLH4_CARE_DENSE = NFL4_UFLG_DENSE,
|
|
|
|
|
NFLH4_CARE_COMMIT_THRU_MDS = NFL4_UFLG_COMMIT_THRU_MDS,
|
|
|
|
|
NFLH4_CARE_STRIPE_UNIT_SIZE = 0x00000040,
|
|
|
|
|
NFLH4_CARE_STRIPE_COUNT = 0x00000080
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#define NFS4_DEVICEID4_SIZE 16
|
|
|
|
|
|
|
|
|
|
struct nfs4_deviceid {
|
|
|
|
|
char data[NFS4_DEVICEID4_SIZE];
|
|
|
|
|
};
|
|
|
|
|
|
2014-09-26 17:58:27 +00:00
|
|
|
enum data_content4 {
|
|
|
|
|
NFS4_CONTENT_DATA = 0,
|
|
|
|
|
NFS4_CONTENT_HOLE = 1,
|
|
|
|
|
};
|
|
|
|
|
|
2015-12-10 15:41:58 +00:00
|
|
|
enum pnfs_update_layout_reason {
|
|
|
|
|
PNFS_UPDATE_LAYOUT_UNKNOWN = 0,
|
|
|
|
|
PNFS_UPDATE_LAYOUT_NO_PNFS,
|
|
|
|
|
PNFS_UPDATE_LAYOUT_RD_ZEROLEN,
|
|
|
|
|
PNFS_UPDATE_LAYOUT_MDSTHRESH,
|
|
|
|
|
PNFS_UPDATE_LAYOUT_NOMEM,
|
|
|
|
|
PNFS_UPDATE_LAYOUT_BULK_RECALL,
|
|
|
|
|
PNFS_UPDATE_LAYOUT_IO_TEST_FAIL,
|
|
|
|
|
PNFS_UPDATE_LAYOUT_FOUND_CACHED,
|
|
|
|
|
PNFS_UPDATE_LAYOUT_RETURN,
|
pnfs: rework LAYOUTGET retry handling
There are several problems in the way a stateid is selected for a
LAYOUTGET operation:
We pick a stateid to use in the RPC prepare op, but that makes
it difficult to serialize LAYOUTGETs that use the open stateid. That
serialization is done in pnfs_update_layout, which occurs well before
the rpc_prepare operation.
Between those two events, the i_lock is dropped and reacquired.
pnfs_update_layout can find that the list has lsegs in it and not do any
serialization, but then later pnfs_choose_layoutget_stateid ends up
choosing the open stateid.
This patch changes the client to select the stateid to use in the
LAYOUTGET earlier, when we're searching for a usable layout segment.
This way we can do it all while holding the i_lock the first time, and
ensure that we serialize any LAYOUTGET call that uses a non-layout
stateid.
This also means a rework of how LAYOUTGET replies are handled, as we
must now get the latest stateid if we want to retransmit in response
to a retryable error.
Most of those errors boil down to the fact that the layout state has
changed in some fashion. Thus, what we really want to do is to re-search
for a layout when it fails with a retryable error, so that we can avoid
reissuing the RPC at all if possible.
While the LAYOUTGET RPC is async, the initiating thread always waits for
it to complete, so it's effectively synchronous anyway. Currently, when
we need to retry a LAYOUTGET because of an error, we drive that retry
via the rpc state machine.
This means that once the call has been submitted, it runs until it
completes. So, we must move the error handling for this RPC out of the
rpc_call_done operation and into the caller.
In order to handle errors like NFS4ERR_DELAY properly, we must also
pass a pointer to the sliding timeout, which is now moved to the stack
in pnfs_update_layout.
The complicating errors are -NFS4ERR_RECALLCONFLICT and
-NFS4ERR_LAYOUTTRYLATER, as those involve a timeout after which we give
up and return NULL back to the caller. So, there is some special
handling for those errors to ensure that the layers driving the retries
can handle that appropriately.
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-05-17 16:28:47 +00:00
|
|
|
PNFS_UPDATE_LAYOUT_RETRY,
|
2015-12-10 15:41:58 +00:00
|
|
|
PNFS_UPDATE_LAYOUT_BLOCKED,
|
pnfs: rework LAYOUTGET retry handling
There are several problems in the way a stateid is selected for a
LAYOUTGET operation:
We pick a stateid to use in the RPC prepare op, but that makes
it difficult to serialize LAYOUTGETs that use the open stateid. That
serialization is done in pnfs_update_layout, which occurs well before
the rpc_prepare operation.
Between those two events, the i_lock is dropped and reacquired.
pnfs_update_layout can find that the list has lsegs in it and not do any
serialization, but then later pnfs_choose_layoutget_stateid ends up
choosing the open stateid.
This patch changes the client to select the stateid to use in the
LAYOUTGET earlier, when we're searching for a usable layout segment.
This way we can do it all while holding the i_lock the first time, and
ensure that we serialize any LAYOUTGET call that uses a non-layout
stateid.
This also means a rework of how LAYOUTGET replies are handled, as we
must now get the latest stateid if we want to retransmit in response
to a retryable error.
Most of those errors boil down to the fact that the layout state has
changed in some fashion. Thus, what we really want to do is to re-search
for a layout when it fails with a retryable error, so that we can avoid
reissuing the RPC at all if possible.
While the LAYOUTGET RPC is async, the initiating thread always waits for
it to complete, so it's effectively synchronous anyway. Currently, when
we need to retry a LAYOUTGET because of an error, we drive that retry
via the rpc state machine.
This means that once the call has been submitted, it runs until it
completes. So, we must move the error handling for this RPC out of the
rpc_call_done operation and into the caller.
In order to handle errors like NFS4ERR_DELAY properly, we must also
pass a pointer to the sliding timeout, which is now moved to the stack
in pnfs_update_layout.
The complicating errors are -NFS4ERR_RECALLCONFLICT and
-NFS4ERR_LAYOUTTRYLATER, as those involve a timeout after which we give
up and return NULL back to the caller. So, there is some special
handling for those errors to ensure that the layers driving the retries
can handle that appropriately.
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-05-17 16:28:47 +00:00
|
|
|
PNFS_UPDATE_LAYOUT_INVALID_OPEN,
|
2015-12-10 15:41:58 +00:00
|
|
|
PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET,
|
|
|
|
|
};
|
|
|
|
|
|
2016-06-15 16:52:07 +00:00
|
|
|
#define NFS4_OP_MAP_NUM_LONGS \
|
|
|
|
|
DIV_ROUND_UP(LAST_NFS4_OP, 8 * sizeof(unsigned long))
|
|
|
|
|
#define NFS4_OP_MAP_NUM_WORDS \
|
|
|
|
|
(NFS4_OP_MAP_NUM_LONGS * sizeof(unsigned long) / sizeof(u32))
|
|
|
|
|
struct nfs4_op_map {
|
|
|
|
|
union {
|
|
|
|
|
unsigned long longs[NFS4_OP_MAP_NUM_LONGS];
|
|
|
|
|
u32 words[NFS4_OP_MAP_NUM_WORDS];
|
|
|
|
|
} u;
|
|
|
|
|
};
|
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
#endif
|