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 22:07:57 +08:00
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// SPDX-License-Identifier: GPL-2.0
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2005-04-17 06:20:36 +08:00
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/*
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* XDR support for nfsd
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*
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* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
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*/
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2013-01-24 15:18:08 +08:00
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#include "vfs.h"
|
2009-12-04 02:30:56 +08:00
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#include "xdr.h"
|
2007-11-16 06:05:43 +08:00
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#include "auth.h"
|
2005-04-17 06:20:36 +08:00
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|
|
/*
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|
* Mapping of S_IF* types to NFS file types
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|
*/
|
2020-10-24 03:28:59 +08:00
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|
static const u32 nfs_ftypes[] = {
|
2005-04-17 06:20:36 +08:00
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NFNON, NFCHR, NFCHR, NFBAD,
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NFDIR, NFBAD, NFBLK, NFBAD,
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NFREG, NFBAD, NFLNK, NFBAD,
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NFSOCK, NFBAD, NFLNK, NFBAD,
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};
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/*
|
2020-10-22 00:14:23 +08:00
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|
* Basic NFSv2 data types (RFC 1094 Section 2.3)
|
2005-04-17 06:20:36 +08:00
|
|
|
*/
|
2020-10-22 00:14:23 +08:00
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|
2020-11-19 03:38:47 +08:00
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|
/**
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|
|
|
* svcxdr_encode_stat - Encode an NFSv2 status code
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|
* @xdr: XDR stream
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|
* @status: status value to encode
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|
*
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|
* Return values:
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|
|
* %false: Send buffer space was exhausted
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|
|
* %true: Success
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|
|
|
*/
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bool
|
2020-10-23 23:08:02 +08:00
|
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|
svcxdr_encode_stat(struct xdr_stream *xdr, __be32 status)
|
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|
|
{
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|
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|
__be32 *p;
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|
|
p = xdr_reserve_space(xdr, sizeof(status));
|
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|
if (!p)
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|
return false;
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*p = status;
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return true;
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}
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|
2020-11-18 00:32:04 +08:00
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|
|
/**
|
|
|
|
* svcxdr_decode_fhandle - Decode an NFSv2 file handle
|
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|
* @xdr: XDR stream positioned at an encoded NFSv2 FH
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|
|
* @fhp: OUT: filled-in server file handle
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*
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|
|
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* Return values:
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|
|
* %false: The encoded file handle was not valid
|
|
|
|
* %true: @fhp has been initialized
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|
|
|
*/
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bool
|
2020-10-22 00:14:23 +08:00
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|
|
svcxdr_decode_fhandle(struct xdr_stream *xdr, struct svc_fh *fhp)
|
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|
|
{
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|
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|
__be32 *p;
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|
|
p = xdr_inline_decode(xdr, NFS_FHSIZE);
|
|
|
|
if (!p)
|
|
|
|
return false;
|
|
|
|
fh_init(fhp, NFS_FHSIZE);
|
2021-09-02 09:16:32 +08:00
|
|
|
memcpy(&fhp->fh_handle.fh_raw, p, NFS_FHSIZE);
|
2020-10-22 00:14:23 +08:00
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|
|
fhp->fh_handle.fh_size = NFS_FHSIZE;
|
|
|
|
|
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|
|
return true;
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|
|
|
}
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|
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|
2020-10-24 04:44:16 +08:00
|
|
|
static bool
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|
|
|
svcxdr_encode_fhandle(struct xdr_stream *xdr, const struct svc_fh *fhp)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2020-10-24 04:44:16 +08:00
|
|
|
__be32 *p;
|
|
|
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|
|
|
|
p = xdr_reserve_space(xdr, NFS_FHSIZE);
|
|
|
|
if (!p)
|
|
|
|
return false;
|
2021-09-02 09:16:32 +08:00
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|
|
memcpy(p, &fhp->fh_handle.fh_raw, NFS_FHSIZE);
|
2020-10-24 04:44:16 +08:00
|
|
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|
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|
|
return true;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
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|
2020-10-24 03:28:59 +08:00
|
|
|
static __be32 *
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|
|
encode_timeval(__be32 *p, const struct timespec64 *time)
|
|
|
|
{
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|
|
|
*p++ = cpu_to_be32((u32)time->tv_sec);
|
|
|
|
if (time->tv_nsec)
|
|
|
|
*p++ = cpu_to_be32(time->tv_nsec / NSEC_PER_USEC);
|
|
|
|
else
|
|
|
|
*p++ = xdr_zero;
|
|
|
|
return p;
|
|
|
|
}
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|
2020-10-20 02:33:24 +08:00
|
|
|
static bool
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|
|
|
svcxdr_decode_filename(struct xdr_stream *xdr, char **name, unsigned int *len)
|
|
|
|
{
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|
|
|
u32 size, i;
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|
|
|
__be32 *p;
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|
|
|
char *c;
|
|
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|
if (xdr_stream_decode_u32(xdr, &size) < 0)
|
|
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|
return false;
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|
if (size == 0 || size > NFS_MAXNAMLEN)
|
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|
return false;
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|
p = xdr_inline_decode(xdr, size);
|
|
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|
if (!p)
|
|
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|
return false;
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|
*len = size;
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|
*name = (char *)p;
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|
for (i = 0, c = *name; i < size; i++, c++)
|
|
|
|
if (*c == '\0' || *c == '/')
|
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|
return false;
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|
return true;
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|
}
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|
static bool
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|
svcxdr_decode_diropargs(struct xdr_stream *xdr, struct svc_fh *fhp,
|
|
|
|
char **name, unsigned int *len)
|
|
|
|
{
|
|
|
|
return svcxdr_decode_fhandle(xdr, fhp) &&
|
|
|
|
svcxdr_decode_filename(xdr, name, len);
|
|
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|
}
|
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|
2020-10-22 00:39:06 +08:00
|
|
|
static bool
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|
|
svcxdr_decode_sattr(struct svc_rqst *rqstp, struct xdr_stream *xdr,
|
|
|
|
struct iattr *iap)
|
|
|
|
{
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|
|
|
u32 tmp1, tmp2;
|
|
|
|
__be32 *p;
|
|
|
|
|
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|
|
p = xdr_inline_decode(xdr, XDR_UNIT * 8);
|
|
|
|
if (!p)
|
|
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|
return false;
|
|
|
|
|
|
|
|
iap->ia_valid = 0;
|
|
|
|
|
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|
|
/*
|
|
|
|
* Some Sun clients put 0xffff in the mode field when they
|
|
|
|
* mean 0xffffffff.
|
|
|
|
*/
|
|
|
|
tmp1 = be32_to_cpup(p++);
|
|
|
|
if (tmp1 != (u32)-1 && tmp1 != 0xffff) {
|
|
|
|
iap->ia_valid |= ATTR_MODE;
|
|
|
|
iap->ia_mode = tmp1;
|
|
|
|
}
|
|
|
|
|
|
|
|
tmp1 = be32_to_cpup(p++);
|
|
|
|
if (tmp1 != (u32)-1) {
|
|
|
|
iap->ia_uid = make_kuid(nfsd_user_namespace(rqstp), tmp1);
|
|
|
|
if (uid_valid(iap->ia_uid))
|
|
|
|
iap->ia_valid |= ATTR_UID;
|
|
|
|
}
|
|
|
|
|
|
|
|
tmp1 = be32_to_cpup(p++);
|
|
|
|
if (tmp1 != (u32)-1) {
|
|
|
|
iap->ia_gid = make_kgid(nfsd_user_namespace(rqstp), tmp1);
|
|
|
|
if (gid_valid(iap->ia_gid))
|
|
|
|
iap->ia_valid |= ATTR_GID;
|
|
|
|
}
|
|
|
|
|
|
|
|
tmp1 = be32_to_cpup(p++);
|
|
|
|
if (tmp1 != (u32)-1) {
|
|
|
|
iap->ia_valid |= ATTR_SIZE;
|
|
|
|
iap->ia_size = tmp1;
|
|
|
|
}
|
|
|
|
|
|
|
|
tmp1 = be32_to_cpup(p++);
|
|
|
|
tmp2 = be32_to_cpup(p++);
|
|
|
|
if (tmp1 != (u32)-1 && tmp2 != (u32)-1) {
|
|
|
|
iap->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET;
|
|
|
|
iap->ia_atime.tv_sec = tmp1;
|
|
|
|
iap->ia_atime.tv_nsec = tmp2 * NSEC_PER_USEC;
|
|
|
|
}
|
|
|
|
|
|
|
|
tmp1 = be32_to_cpup(p++);
|
|
|
|
tmp2 = be32_to_cpup(p++);
|
|
|
|
if (tmp1 != (u32)-1 && tmp2 != (u32)-1) {
|
|
|
|
iap->ia_valid |= ATTR_MTIME | ATTR_MTIME_SET;
|
|
|
|
iap->ia_mtime.tv_sec = tmp1;
|
|
|
|
iap->ia_mtime.tv_nsec = tmp2 * NSEC_PER_USEC;
|
|
|
|
/*
|
|
|
|
* Passing the invalid value useconds=1000000 for mtime
|
|
|
|
* is a Sun convention for "set both mtime and atime to
|
|
|
|
* current server time". It's needed to make permissions
|
|
|
|
* checks for the "touch" program across v2 mounts to
|
|
|
|
* Solaris and Irix boxes work correctly. See description of
|
|
|
|
* sattr in section 6.1 of "NFS Illustrated" by
|
|
|
|
* Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5
|
|
|
|
*/
|
|
|
|
if (tmp2 == 1000000)
|
|
|
|
iap->ia_valid &= ~(ATTR_ATIME_SET|ATTR_MTIME_SET);
|
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2020-11-19 03:38:47 +08:00
|
|
|
/**
|
|
|
|
* svcxdr_encode_fattr - Encode NFSv2 file attributes
|
|
|
|
* @rqstp: Context of a completed RPC transaction
|
|
|
|
* @xdr: XDR stream
|
|
|
|
* @fhp: File handle to encode
|
|
|
|
* @stat: Attributes to encode
|
|
|
|
*
|
|
|
|
* Return values:
|
|
|
|
* %false: Send buffer space was exhausted
|
|
|
|
* %true: Success
|
|
|
|
*/
|
|
|
|
bool
|
2020-10-24 03:28:59 +08:00
|
|
|
svcxdr_encode_fattr(struct svc_rqst *rqstp, struct xdr_stream *xdr,
|
|
|
|
const struct svc_fh *fhp, const struct kstat *stat)
|
|
|
|
{
|
|
|
|
struct user_namespace *userns = nfsd_user_namespace(rqstp);
|
|
|
|
struct dentry *dentry = fhp->fh_dentry;
|
|
|
|
int type = stat->mode & S_IFMT;
|
|
|
|
struct timespec64 time;
|
|
|
|
__be32 *p;
|
|
|
|
u32 fsid;
|
|
|
|
|
|
|
|
p = xdr_reserve_space(xdr, XDR_UNIT * 17);
|
|
|
|
if (!p)
|
2020-10-24 04:44:16 +08:00
|
|
|
return false;
|
2020-10-24 03:28:59 +08:00
|
|
|
|
|
|
|
*p++ = cpu_to_be32(nfs_ftypes[type >> 12]);
|
|
|
|
*p++ = cpu_to_be32((u32)stat->mode);
|
|
|
|
*p++ = cpu_to_be32((u32)stat->nlink);
|
|
|
|
*p++ = cpu_to_be32((u32)from_kuid_munged(userns, stat->uid));
|
|
|
|
*p++ = cpu_to_be32((u32)from_kgid_munged(userns, stat->gid));
|
|
|
|
|
|
|
|
if (S_ISLNK(type) && stat->size > NFS_MAXPATHLEN)
|
|
|
|
*p++ = cpu_to_be32(NFS_MAXPATHLEN);
|
|
|
|
else
|
|
|
|
*p++ = cpu_to_be32((u32) stat->size);
|
|
|
|
*p++ = cpu_to_be32((u32) stat->blksize);
|
|
|
|
if (S_ISCHR(type) || S_ISBLK(type))
|
|
|
|
*p++ = cpu_to_be32(new_encode_dev(stat->rdev));
|
|
|
|
else
|
|
|
|
*p++ = cpu_to_be32(0xffffffff);
|
|
|
|
*p++ = cpu_to_be32((u32)stat->blocks);
|
|
|
|
|
|
|
|
switch (fsid_source(fhp)) {
|
|
|
|
case FSIDSOURCE_FSID:
|
|
|
|
fsid = (u32)fhp->fh_export->ex_fsid;
|
|
|
|
break;
|
|
|
|
case FSIDSOURCE_UUID:
|
|
|
|
fsid = ((u32 *)fhp->fh_export->ex_uuid)[0];
|
|
|
|
fsid ^= ((u32 *)fhp->fh_export->ex_uuid)[1];
|
|
|
|
fsid ^= ((u32 *)fhp->fh_export->ex_uuid)[2];
|
|
|
|
fsid ^= ((u32 *)fhp->fh_export->ex_uuid)[3];
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
fsid = new_encode_dev(stat->dev);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
*p++ = cpu_to_be32(fsid);
|
|
|
|
|
|
|
|
*p++ = cpu_to_be32((u32)stat->ino);
|
|
|
|
p = encode_timeval(p, &stat->atime);
|
|
|
|
time = stat->mtime;
|
|
|
|
lease_get_mtime(d_inode(dentry), &time);
|
|
|
|
p = encode_timeval(p, &time);
|
|
|
|
encode_timeval(p, &stat->ctime);
|
|
|
|
|
2020-10-24 04:44:16 +08:00
|
|
|
return true;
|
2020-10-24 03:28:59 +08:00
|
|
|
}
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
/*
|
|
|
|
* XDR decode functions
|
|
|
|
*/
|
|
|
|
|
2021-10-12 23:57:28 +08:00
|
|
|
bool
|
2021-10-12 23:57:22 +08:00
|
|
|
nfssvc_decode_fhandleargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:01:48 +08:00
|
|
|
struct nfsd_fhandle *args = rqstp->rq_argp;
|
|
|
|
|
2020-10-22 00:14:23 +08:00
|
|
|
return svcxdr_decode_fhandle(xdr, &args->fh);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2021-10-12 23:57:28 +08:00
|
|
|
bool
|
2021-10-12 23:57:22 +08:00
|
|
|
nfssvc_decode_sattrargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:01:48 +08:00
|
|
|
struct nfsd_sattrargs *args = rqstp->rq_argp;
|
|
|
|
|
2020-10-22 00:39:06 +08:00
|
|
|
return svcxdr_decode_fhandle(xdr, &args->fh) &&
|
|
|
|
svcxdr_decode_sattr(rqstp, xdr, &args->attrs);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2021-10-12 23:57:28 +08:00
|
|
|
bool
|
2021-10-12 23:57:22 +08:00
|
|
|
nfssvc_decode_diropargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:01:48 +08:00
|
|
|
struct nfsd_diropargs *args = rqstp->rq_argp;
|
|
|
|
|
2020-10-20 02:33:24 +08:00
|
|
|
return svcxdr_decode_diropargs(xdr, &args->fh, &args->name, &args->len);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2021-10-12 23:57:28 +08:00
|
|
|
bool
|
2021-10-12 23:57:22 +08:00
|
|
|
nfssvc_decode_readargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:01:48 +08:00
|
|
|
struct nfsd_readargs *args = rqstp->rq_argp;
|
2020-10-22 00:15:51 +08:00
|
|
|
u32 totalcount;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2020-10-22 00:15:51 +08:00
|
|
|
if (!svcxdr_decode_fhandle(xdr, &args->fh))
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2020-10-22 00:15:51 +08:00
|
|
|
if (xdr_stream_decode_u32(xdr, &args->offset) < 0)
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2020-10-22 00:15:51 +08:00
|
|
|
if (xdr_stream_decode_u32(xdr, &args->count) < 0)
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2020-10-22 00:15:51 +08:00
|
|
|
/* totalcount is ignored */
|
|
|
|
if (xdr_stream_decode_u32(xdr, &totalcount) < 0)
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2021-10-12 23:57:28 +08:00
|
|
|
return true;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2021-10-12 23:57:28 +08:00
|
|
|
bool
|
2021-10-12 23:57:22 +08:00
|
|
|
nfssvc_decode_writeargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:01:48 +08:00
|
|
|
struct nfsd_writeargs *args = rqstp->rq_argp;
|
2020-10-22 00:18:36 +08:00
|
|
|
u32 beginoffset, totalcount;
|
2007-05-09 17:34:48 +08:00
|
|
|
|
2020-10-22 00:18:36 +08:00
|
|
|
if (!svcxdr_decode_fhandle(xdr, &args->fh))
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2020-10-22 00:18:36 +08:00
|
|
|
/* beginoffset is ignored */
|
|
|
|
if (xdr_stream_decode_u32(xdr, &beginoffset) < 0)
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2020-10-22 00:18:36 +08:00
|
|
|
if (xdr_stream_decode_u32(xdr, &args->offset) < 0)
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2020-10-22 00:18:36 +08:00
|
|
|
/* totalcount is ignored */
|
|
|
|
if (xdr_stream_decode_u32(xdr, &totalcount) < 0)
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2007-05-09 17:34:48 +08:00
|
|
|
|
2020-10-22 00:18:36 +08:00
|
|
|
/* opaque data */
|
|
|
|
if (xdr_stream_decode_u32(xdr, &args->len) < 0)
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2020-10-22 00:18:36 +08:00
|
|
|
if (args->len > NFSSVC_MAXBLKSIZE_V2)
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2007-05-09 17:34:48 +08:00
|
|
|
|
2022-09-13 05:23:07 +08:00
|
|
|
return xdr_stream_subsegment(xdr, &args->payload, args->len);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2021-10-12 23:57:28 +08:00
|
|
|
bool
|
2021-10-12 23:57:22 +08:00
|
|
|
nfssvc_decode_createargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:01:48 +08:00
|
|
|
struct nfsd_createargs *args = rqstp->rq_argp;
|
|
|
|
|
2020-10-22 00:43:58 +08:00
|
|
|
return svcxdr_decode_diropargs(xdr, &args->fh,
|
|
|
|
&args->name, &args->len) &&
|
|
|
|
svcxdr_decode_sattr(rqstp, xdr, &args->attrs);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2021-10-12 23:57:28 +08:00
|
|
|
bool
|
2021-10-12 23:57:22 +08:00
|
|
|
nfssvc_decode_renameargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:01:48 +08:00
|
|
|
struct nfsd_renameargs *args = rqstp->rq_argp;
|
|
|
|
|
2020-10-22 00:35:41 +08:00
|
|
|
return svcxdr_decode_diropargs(xdr, &args->ffh,
|
|
|
|
&args->fname, &args->flen) &&
|
|
|
|
svcxdr_decode_diropargs(xdr, &args->tfh,
|
|
|
|
&args->tname, &args->tlen);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2021-10-12 23:57:28 +08:00
|
|
|
bool
|
2021-10-12 23:57:22 +08:00
|
|
|
nfssvc_decode_linkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:01:48 +08:00
|
|
|
struct nfsd_linkargs *args = rqstp->rq_argp;
|
|
|
|
|
2020-10-22 00:34:24 +08:00
|
|
|
return svcxdr_decode_fhandle(xdr, &args->ffh) &&
|
|
|
|
svcxdr_decode_diropargs(xdr, &args->tfh,
|
|
|
|
&args->tname, &args->tlen);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2021-10-12 23:57:28 +08:00
|
|
|
bool
|
2021-10-12 23:57:22 +08:00
|
|
|
nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:01:48 +08:00
|
|
|
struct nfsd_symlinkargs *args = rqstp->rq_argp;
|
2020-10-22 00:46:03 +08:00
|
|
|
struct kvec *head = rqstp->rq_arg.head;
|
2017-05-09 01:01:48 +08:00
|
|
|
|
2020-10-22 00:46:03 +08:00
|
|
|
if (!svcxdr_decode_diropargs(xdr, &args->ffh, &args->fname, &args->flen))
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2020-10-22 00:46:03 +08:00
|
|
|
if (xdr_stream_decode_u32(xdr, &args->tlen) < 0)
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2018-03-27 22:54:21 +08:00
|
|
|
if (args->tlen == 0)
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2018-03-27 22:54:21 +08:00
|
|
|
|
2020-10-22 00:46:03 +08:00
|
|
|
args->first.iov_len = head->iov_len - xdr_stream_pos(xdr);
|
|
|
|
args->first.iov_base = xdr_inline_decode(xdr, args->tlen);
|
|
|
|
if (!args->first.iov_base)
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2020-10-22 00:46:03 +08:00
|
|
|
return svcxdr_decode_sattr(rqstp, xdr, &args->attrs);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2021-10-12 23:57:28 +08:00
|
|
|
bool
|
2021-10-12 23:57:22 +08:00
|
|
|
nfssvc_decode_readdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:01:48 +08:00
|
|
|
struct nfsd_readdirargs *args = rqstp->rq_argp;
|
|
|
|
|
2020-10-20 02:15:51 +08:00
|
|
|
if (!svcxdr_decode_fhandle(xdr, &args->fh))
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2020-10-20 02:15:51 +08:00
|
|
|
if (xdr_stream_decode_u32(xdr, &args->cookie) < 0)
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2020-10-20 02:15:51 +08:00
|
|
|
if (xdr_stream_decode_u32(xdr, &args->count) < 0)
|
2021-10-12 23:57:28 +08:00
|
|
|
return false;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2021-10-12 23:57:28 +08:00
|
|
|
return true;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* XDR encode functions
|
|
|
|
*/
|
|
|
|
|
2021-10-13 22:41:13 +08:00
|
|
|
bool
|
2021-10-13 22:41:06 +08:00
|
|
|
nfssvc_encode_statres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2020-10-03 03:52:44 +08:00
|
|
|
{
|
|
|
|
struct nfsd_stat *resp = rqstp->rq_resp;
|
|
|
|
|
2020-10-23 23:08:02 +08:00
|
|
|
return svcxdr_encode_stat(xdr, resp->status);
|
2020-10-03 03:52:44 +08:00
|
|
|
}
|
|
|
|
|
2021-10-13 22:41:13 +08:00
|
|
|
bool
|
2021-10-13 22:41:06 +08:00
|
|
|
nfssvc_encode_attrstatres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:42:02 +08:00
|
|
|
struct nfsd_attrstat *resp = rqstp->rq_resp;
|
|
|
|
|
2020-10-24 03:28:59 +08:00
|
|
|
if (!svcxdr_encode_stat(xdr, resp->status))
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 03:28:59 +08:00
|
|
|
switch (resp->status) {
|
|
|
|
case nfs_ok:
|
|
|
|
if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 03:28:59 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2021-10-13 22:41:13 +08:00
|
|
|
return true;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2021-10-13 22:41:13 +08:00
|
|
|
bool
|
2021-10-13 22:41:06 +08:00
|
|
|
nfssvc_encode_diropres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:42:02 +08:00
|
|
|
struct nfsd_diropres *resp = rqstp->rq_resp;
|
|
|
|
|
2020-10-24 04:44:16 +08:00
|
|
|
if (!svcxdr_encode_stat(xdr, resp->status))
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 04:44:16 +08:00
|
|
|
switch (resp->status) {
|
|
|
|
case nfs_ok:
|
|
|
|
if (!svcxdr_encode_fhandle(xdr, &resp->fh))
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 04:44:16 +08:00
|
|
|
if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 04:44:16 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2021-10-13 22:41:13 +08:00
|
|
|
return true;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2021-10-13 22:41:13 +08:00
|
|
|
bool
|
2021-10-13 22:41:06 +08:00
|
|
|
nfssvc_encode_readlinkres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:42:02 +08:00
|
|
|
struct nfsd_readlinkres *resp = rqstp->rq_resp;
|
2020-11-05 23:24:19 +08:00
|
|
|
struct kvec *head = rqstp->rq_res.head;
|
2017-05-09 01:42:02 +08:00
|
|
|
|
2020-10-24 03:41:09 +08:00
|
|
|
if (!svcxdr_encode_stat(xdr, resp->status))
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 03:41:09 +08:00
|
|
|
switch (resp->status) {
|
|
|
|
case nfs_ok:
|
|
|
|
if (xdr_stream_encode_u32(xdr, resp->len) < 0)
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 03:41:09 +08:00
|
|
|
xdr_write_pages(xdr, &resp->page, 0, resp->len);
|
|
|
|
if (svc_encode_result_payload(rqstp, head->iov_len, resp->len) < 0)
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 03:41:09 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2021-10-13 22:41:13 +08:00
|
|
|
return true;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2021-10-13 22:41:13 +08:00
|
|
|
bool
|
2021-10-13 22:41:06 +08:00
|
|
|
nfssvc_encode_readres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:42:02 +08:00
|
|
|
struct nfsd_readres *resp = rqstp->rq_resp;
|
2020-11-05 23:24:19 +08:00
|
|
|
struct kvec *head = rqstp->rq_res.head;
|
2017-05-09 01:42:02 +08:00
|
|
|
|
2020-10-24 04:40:11 +08:00
|
|
|
if (!svcxdr_encode_stat(xdr, resp->status))
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 04:40:11 +08:00
|
|
|
switch (resp->status) {
|
|
|
|
case nfs_ok:
|
|
|
|
if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 04:40:11 +08:00
|
|
|
if (xdr_stream_encode_u32(xdr, resp->count) < 0)
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 04:40:11 +08:00
|
|
|
xdr_write_pages(xdr, resp->pages, rqstp->rq_res.page_base,
|
|
|
|
resp->count);
|
|
|
|
if (svc_encode_result_payload(rqstp, head->iov_len, resp->count) < 0)
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 04:40:11 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2021-10-13 22:41:13 +08:00
|
|
|
return true;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2021-10-13 22:41:13 +08:00
|
|
|
bool
|
2021-10-13 22:41:06 +08:00
|
|
|
nfssvc_encode_readdirres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:42:02 +08:00
|
|
|
struct nfsd_readdirres *resp = rqstp->rq_resp;
|
2020-11-15 02:45:35 +08:00
|
|
|
struct xdr_buf *dirlist = &resp->dirlist;
|
2017-05-09 01:42:02 +08:00
|
|
|
|
2020-10-24 04:49:01 +08:00
|
|
|
if (!svcxdr_encode_stat(xdr, resp->status))
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 04:49:01 +08:00
|
|
|
switch (resp->status) {
|
|
|
|
case nfs_ok:
|
2020-11-15 02:45:35 +08:00
|
|
|
xdr_write_pages(xdr, dirlist->pages, 0, dirlist->len);
|
2020-10-24 04:49:01 +08:00
|
|
|
/* no more entries */
|
|
|
|
if (xdr_stream_encode_item_absent(xdr) < 0)
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 04:49:01 +08:00
|
|
|
if (xdr_stream_encode_bool(xdr, resp->common.err == nfserr_eof) < 0)
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 04:49:01 +08:00
|
|
|
break;
|
|
|
|
}
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2021-10-13 22:41:13 +08:00
|
|
|
return true;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2021-10-13 22:41:13 +08:00
|
|
|
bool
|
2021-10-13 22:41:06 +08:00
|
|
|
nfssvc_encode_statfsres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2017-05-09 01:42:02 +08:00
|
|
|
struct nfsd_statfsres *resp = rqstp->rq_resp;
|
2005-04-17 06:20:36 +08:00
|
|
|
struct kstatfs *stat = &resp->stats;
|
2021-10-13 22:41:06 +08:00
|
|
|
__be32 *p;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2020-10-24 07:01:38 +08:00
|
|
|
if (!svcxdr_encode_stat(xdr, resp->status))
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 07:01:38 +08:00
|
|
|
switch (resp->status) {
|
|
|
|
case nfs_ok:
|
|
|
|
p = xdr_reserve_space(xdr, XDR_UNIT * 5);
|
|
|
|
if (!p)
|
2021-10-13 22:41:13 +08:00
|
|
|
return false;
|
2020-10-24 07:01:38 +08:00
|
|
|
*p++ = cpu_to_be32(NFSSVC_MAXBLKSIZE_V2);
|
|
|
|
*p++ = cpu_to_be32(stat->f_bsize);
|
|
|
|
*p++ = cpu_to_be32(stat->f_blocks);
|
|
|
|
*p++ = cpu_to_be32(stat->f_bfree);
|
|
|
|
*p = cpu_to_be32(stat->f_bavail);
|
|
|
|
break;
|
|
|
|
}
|
2020-10-02 06:59:49 +08:00
|
|
|
|
2021-10-13 22:41:13 +08:00
|
|
|
return true;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2020-11-14 05:53:17 +08:00
|
|
|
/**
|
|
|
|
* nfssvc_encode_nfscookie - Encode a directory offset cookie
|
|
|
|
* @resp: readdir result context
|
|
|
|
* @offset: offset cookie to encode
|
|
|
|
*
|
2020-11-15 02:45:35 +08:00
|
|
|
* The buffer space for the offset cookie has already been reserved
|
|
|
|
* by svcxdr_encode_entry_common().
|
2020-11-14 05:53:17 +08:00
|
|
|
*/
|
|
|
|
void nfssvc_encode_nfscookie(struct nfsd_readdirres *resp, u32 offset)
|
|
|
|
{
|
2020-11-15 02:45:35 +08:00
|
|
|
__be32 cookie = cpu_to_be32(offset);
|
|
|
|
|
|
|
|
if (!resp->cookie_offset)
|
2020-11-14 05:53:17 +08:00
|
|
|
return;
|
|
|
|
|
2020-11-15 02:45:35 +08:00
|
|
|
write_bytes_to_xdr_buf(&resp->dirlist, resp->cookie_offset, &cookie,
|
|
|
|
sizeof(cookie));
|
|
|
|
resp->cookie_offset = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool
|
|
|
|
svcxdr_encode_entry_common(struct nfsd_readdirres *resp, const char *name,
|
|
|
|
int namlen, loff_t offset, u64 ino)
|
|
|
|
{
|
|
|
|
struct xdr_buf *dirlist = &resp->dirlist;
|
|
|
|
struct xdr_stream *xdr = &resp->xdr;
|
|
|
|
|
|
|
|
if (xdr_stream_encode_item_present(xdr) < 0)
|
|
|
|
return false;
|
|
|
|
/* fileid */
|
|
|
|
if (xdr_stream_encode_u32(xdr, (u32)ino) < 0)
|
|
|
|
return false;
|
|
|
|
/* name */
|
|
|
|
if (xdr_stream_encode_opaque(xdr, name, min(namlen, NFS2_MAXNAMLEN)) < 0)
|
|
|
|
return false;
|
|
|
|
/* cookie */
|
|
|
|
resp->cookie_offset = dirlist->len;
|
|
|
|
if (xdr_stream_encode_u32(xdr, ~0U) < 0)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2020-11-16 03:30:13 +08:00
|
|
|
* nfssvc_encode_entry - encode one NFSv2 READDIR entry
|
2020-11-15 02:45:35 +08:00
|
|
|
* @data: directory context
|
|
|
|
* @name: name of the object to be encoded
|
|
|
|
* @namlen: length of that name, in bytes
|
|
|
|
* @offset: the offset of the previous entry
|
|
|
|
* @ino: the fileid of this entry
|
|
|
|
* @d_type: unused
|
|
|
|
*
|
|
|
|
* Return values:
|
|
|
|
* %0: Entry was successfully encoded.
|
|
|
|
* %-EINVAL: An encoding problem occured, secondary status code in resp->common.err
|
|
|
|
*
|
|
|
|
* On exit, the following fields are updated:
|
|
|
|
* - resp->xdr
|
|
|
|
* - resp->common.err
|
|
|
|
* - resp->cookie_offset
|
|
|
|
*/
|
2020-11-16 03:30:13 +08:00
|
|
|
int nfssvc_encode_entry(void *data, const char *name, int namlen,
|
|
|
|
loff_t offset, u64 ino, unsigned int d_type)
|
2020-11-15 02:45:35 +08:00
|
|
|
{
|
|
|
|
struct readdir_cd *ccd = data;
|
|
|
|
struct nfsd_readdirres *resp = container_of(ccd,
|
|
|
|
struct nfsd_readdirres,
|
|
|
|
common);
|
|
|
|
unsigned int starting_length = resp->dirlist.len;
|
|
|
|
|
|
|
|
/* The offset cookie for the previous entry */
|
|
|
|
nfssvc_encode_nfscookie(resp, offset);
|
|
|
|
|
|
|
|
if (!svcxdr_encode_entry_common(resp, name, namlen, offset, ino))
|
|
|
|
goto out_toosmall;
|
|
|
|
|
|
|
|
xdr_commit_encode(&resp->xdr);
|
|
|
|
resp->common.err = nfs_ok;
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
out_toosmall:
|
|
|
|
resp->cookie_offset = 0;
|
|
|
|
resp->common.err = nfserr_toosmall;
|
|
|
|
resp->dirlist.len = starting_length;
|
|
|
|
return -EINVAL;
|
2020-11-14 05:53:17 +08:00
|
|
|
}
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
/*
|
|
|
|
* XDR release functions
|
|
|
|
*/
|
2020-10-02 06:59:44 +08:00
|
|
|
void nfssvc_release_attrstat(struct svc_rqst *rqstp)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2020-10-02 06:59:44 +08:00
|
|
|
struct nfsd_attrstat *resp = rqstp->rq_resp;
|
|
|
|
|
|
|
|
fh_put(&resp->fh);
|
|
|
|
}
|
|
|
|
|
|
|
|
void nfssvc_release_diropres(struct svc_rqst *rqstp)
|
|
|
|
{
|
|
|
|
struct nfsd_diropres *resp = rqstp->rq_resp;
|
|
|
|
|
|
|
|
fh_put(&resp->fh);
|
|
|
|
}
|
|
|
|
|
|
|
|
void nfssvc_release_readres(struct svc_rqst *rqstp)
|
|
|
|
{
|
|
|
|
struct nfsd_readres *resp = rqstp->rq_resp;
|
2017-05-09 00:48:24 +08:00
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
fh_put(&resp->fh);
|
|
|
|
}
|