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 15:07:57 +01:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2008-02-15 14:37:46 -08:00
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2009-06-17 19:24:03 -04:00
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2016-01-08 16:01:22 -05:00
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2017-11-08 22:23:20 -05:00
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2016-05-20 17:01:00 -07:00
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2016-12-24 11:46:01 -08:00
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2017-02-05 19:47:14 -05:00
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2018-01-09 08:21:39 -05:00
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2008-04-29 18:13:32 -04:00
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2017-04-30 00:36:53 -04:00
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2006-10-11 01:20:50 -07:00
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2013-04-08 12:54:05 -04:00
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2015-06-12 23:46:33 -04:00
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2013-04-08 12:54:05 -04:00
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2019-02-11 00:35:06 -05:00
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2013-04-08 12:54:05 -04:00
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2017-07-31 00:55:34 -04:00
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2013-04-08 12:54:05 -04:00
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2019-02-11 00:35:06 -05:00
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2017-07-31 00:55:34 -04:00
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2013-08-12 09:29:30 -04:00
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2013-04-08 12:54:05 -04:00
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2018-10-02 18:21:19 -04:00
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2013-04-08 12:54:05 -04:00
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2019-02-11 00:14:02 -05:00
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2013-04-08 12:54:05 -04:00
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ext4: avoid declaring fs inconsistent due to invalid file handles
If we receive a file handle, either from NFS or open_by_handle_at(2),
and it points at an inode which has not been initialized, and the file
system has metadata checksums enabled, we shouldn't try to get the
inode, discover the checksum is invalid, and then declare the file
system as being inconsistent.
This can be reproduced by creating a test file system via "mke2fs -t
ext4 -O metadata_csum /tmp/foo.img 8M", mounting it, cd'ing into that
directory, and then running the following program.
#define _GNU_SOURCE
#include <fcntl.h>
struct handle {
struct file_handle fh;
unsigned char fid[MAX_HANDLE_SZ];
};
int main(int argc, char **argv)
{
struct handle h = {{8, 1 }, { 12, }};
open_by_handle_at(AT_FDCWD, &h.fh, O_RDONLY);
return 0;
}
Google-Bug-Id: 120690101
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
2018-12-19 12:29:13 -05:00
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2014-02-17 20:44:36 -05:00
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2013-04-08 12:54:05 -04:00
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2012-04-18 15:16:33 -04:00
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2013-04-08 12:54:05 -04:00
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2019-02-11 00:02:05 -05:00
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2019-02-11 01:07:10 -05:00
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2019-02-11 00:02:05 -05:00
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2019-02-11 00:05:24 -05:00
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2013-04-08 12:54:05 -04:00
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2018-10-02 18:21:19 -04:00
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2013-04-08 12:54:05 -04:00
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2019-02-11 00:05:24 -05:00
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2013-04-08 12:54:05 -04:00
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2018-01-09 08:21:39 -05:00
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2013-04-08 12:54:05 -04:00
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2015-10-17 16:18:43 -04:00
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2013-04-08 12:54:05 -04:00
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2019-02-11 00:14:02 -05:00
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2013-04-08 12:54:05 -04:00
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2016-11-14 21:40:10 -05:00
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2013-04-08 12:54:05 -04:00
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2017-11-08 22:23:20 -05:00
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2018-10-02 18:21:19 -04:00
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2013-04-08 12:54:05 -04:00
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2019-02-11 00:14:02 -05:00
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2013-04-08 12:54:05 -04:00
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2018-10-02 18:21:19 -04:00
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2019-02-11 00:14:02 -05:00
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2013-04-08 12:54:05 -04:00
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2019-02-11 00:14:02 -05:00
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2013-04-08 12:54:05 -04:00
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2019-02-11 00:05:24 -05:00
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2014-02-12 11:48:31 -05:00
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2012-04-18 15:16:33 -04:00
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2013-04-08 12:54:05 -04:00
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2018-12-12 15:20:12 +05:30
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2015-04-11 07:48:01 -04:00
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2016-12-01 11:55:51 -05:00
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2015-04-11 07:48:01 -04:00
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2016-01-08 16:01:22 -05:00
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ext4: ioctl: fix erroneous return value
The ext4_ioctl_setflags() function which is used in the ioctls
EXT4_IOC_SETFLAGS and EXT4_IOC_FSSETXATTR may return the positive value
EPERM instead of -EPERM in case of error. This bug was introduced by a
recent commit 9b7365fc.
The following program can be used to illustrate the wrong behavior:
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <err.h>
#define FS_IOC_GETFLAGS _IOR('f', 1, long)
#define FS_IOC_SETFLAGS _IOW('f', 2, long)
#define FS_IMMUTABLE_FL 0x00000010
int main(void)
{
int fd;
long flags;
fd = open("file", O_RDWR|O_CREAT, 0600);
if (fd < 0)
err(1, "open");
if (ioctl(fd, FS_IOC_GETFLAGS, &flags) < 0)
err(1, "ioctl: FS_IOC_GETFLAGS");
flags |= FS_IMMUTABLE_FL;
if (ioctl(fd, FS_IOC_SETFLAGS, &flags) < 0)
err(1, "ioctl: FS_IOC_SETFLAGS");
warnx("ioctl returned no error");
return 0;
}
Running it gives the following result:
$ strace -e ioctl ./test
ioctl(3, FS_IOC_GETFLAGS, 0x7ffdbd8bfd38) = 0
ioctl(3, FS_IOC_SETFLAGS, 0x7ffdbd8bfd38) = 1
test: ioctl returned no error
+++ exited with 0 +++
Running the program on a kernel with the bug fixed gives the proper result:
$ strace -e ioctl ./test
ioctl(3, FS_IOC_GETFLAGS, 0x7ffdd2768258) = 0
ioctl(3, FS_IOC_SETFLAGS, 0x7ffdd2768258) = -1 EPERM (Operation not permitted)
test: ioctl: FS_IOC_SETFLAGS: Operation not permitted
+++ exited with 1 +++
Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2016-02-11 23:57:21 -05:00
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2016-01-08 16:01:22 -05:00
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ext4: Support case-insensitive file name lookups
This patch implements the actual support for case-insensitive file name
lookups in ext4, based on the feature bit and the encoding stored in the
superblock.
A filesystem that has the casefold feature set is able to configure
directories with the +F (EXT4_CASEFOLD_FL) attribute, enabling lookups
to succeed in that directory in a case-insensitive fashion, i.e: match
a directory entry even if the name used by userspace is not a byte per
byte match with the disk name, but is an equivalent case-insensitive
version of the Unicode string. This operation is called a
case-insensitive file name lookup.
The feature is configured as an inode attribute applied to directories
and inherited by its children. This attribute can only be enabled on
empty directories for filesystems that support the encoding feature,
thus preventing collision of file names that only differ by case.
* dcache handling:
For a +F directory, Ext4 only stores the first equivalent name dentry
used in the dcache. This is done to prevent unintentional duplication of
dentries in the dcache, while also allowing the VFS code to quickly find
the right entry in the cache despite which equivalent string was used in
a previous lookup, without having to resort to ->lookup().
d_hash() of casefolded directories is implemented as the hash of the
casefolded string, such that we always have a well-known bucket for all
the equivalencies of the same string. d_compare() uses the
utf8_strncasecmp() infrastructure, which handles the comparison of
equivalent, same case, names as well.
For now, negative lookups are not inserted in the dcache, since they
would need to be invalidated anyway, because we can't trust missing file
dentries. This is bad for performance but requires some leveraging of
the vfs layer to fix. We can live without that for now, and so does
everyone else.
* on-disk data:
Despite using a specific version of the name as the internal
representation within the dcache, the name stored and fetched from the
disk is a byte-per-byte match with what the user requested, making this
implementation 'name-preserving'. i.e. no actual information is lost
when writing to storage.
DX is supported by modifying the hashes used in +F directories to make
them case/encoding-aware. The new disk hashes are calculated as the
hash of the full casefolded string, instead of the string directly.
This allows us to efficiently search for file names in the htree without
requiring the user to provide an exact name.
* Dealing with invalid sequences:
By default, when a invalid UTF-8 sequence is identified, ext4 will treat
it as an opaque byte sequence, ignoring the encoding and reverting to
the old behavior for that unique file. This means that case-insensitive
file name lookup will not work only for that file. An optional bit can
be set in the superblock telling the filesystem code and userspace tools
to enforce the encoding. When that optional bit is set, any attempt to
create a file name using an invalid UTF-8 sequence will fail and return
an error to userspace.
* Normalization algorithm:
The UTF-8 algorithms used to compare strings in ext4 is implemented
lives in fs/unicode, and is based on a previous version developed by
SGI. It implements the Canonical decomposition (NFD) algorithm
described by the Unicode specification 12.1, or higher, combined with
the elimination of ignorable code points (NFDi) and full
case-folding (CF) as documented in fs/unicode/utf8_norm.c.
NFD seems to be the best normalization method for EXT4 because:
- It has a lower cost than NFC/NFKC (which requires
decomposing to NFD as an intermediary step)
- It doesn't eliminate important semantic meaning like
compatibility decompositions.
Although:
- This implementation is not completely linguistic accurate, because
different languages have conflicting rules, which would require the
specialization of the filesystem to a given locale, which brings all
sorts of problems for removable media and for users who use more than
one language.
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2019-04-25 14:12:08 -04:00
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2016-01-08 16:01:22 -05:00
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2017-06-22 11:31:25 -04:00
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2016-01-08 16:01:22 -05:00
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2016-11-13 22:02:26 -05:00
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2016-01-08 16:01:22 -05:00
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ext4: Support case-insensitive file name lookups
This patch implements the actual support for case-insensitive file name
lookups in ext4, based on the feature bit and the encoding stored in the
superblock.
A filesystem that has the casefold feature set is able to configure
directories with the +F (EXT4_CASEFOLD_FL) attribute, enabling lookups
to succeed in that directory in a case-insensitive fashion, i.e: match
a directory entry even if the name used by userspace is not a byte per
byte match with the disk name, but is an equivalent case-insensitive
version of the Unicode string. This operation is called a
case-insensitive file name lookup.
The feature is configured as an inode attribute applied to directories
and inherited by its children. This attribute can only be enabled on
empty directories for filesystems that support the encoding feature,
thus preventing collision of file names that only differ by case.
* dcache handling:
For a +F directory, Ext4 only stores the first equivalent name dentry
used in the dcache. This is done to prevent unintentional duplication of
dentries in the dcache, while also allowing the VFS code to quickly find
the right entry in the cache despite which equivalent string was used in
a previous lookup, without having to resort to ->lookup().
d_hash() of casefolded directories is implemented as the hash of the
casefolded string, such that we always have a well-known bucket for all
the equivalencies of the same string. d_compare() uses the
utf8_strncasecmp() infrastructure, which handles the comparison of
equivalent, same case, names as well.
For now, negative lookups are not inserted in the dcache, since they
would need to be invalidated anyway, because we can't trust missing file
dentries. This is bad for performance but requires some leveraging of
the vfs layer to fix. We can live without that for now, and so does
everyone else.
* on-disk data:
Despite using a specific version of the name as the internal
representation within the dcache, the name stored and fetched from the
disk is a byte-per-byte match with what the user requested, making this
implementation 'name-preserving'. i.e. no actual information is lost
when writing to storage.
DX is supported by modifying the hashes used in +F directories to make
them case/encoding-aware. The new disk hashes are calculated as the
hash of the full casefolded string, instead of the string directly.
This allows us to efficiently search for file names in the htree without
requiring the user to provide an exact name.
* Dealing with invalid sequences:
By default, when a invalid UTF-8 sequence is identified, ext4 will treat
it as an opaque byte sequence, ignoring the encoding and reverting to
the old behavior for that unique file. This means that case-insensitive
file name lookup will not work only for that file. An optional bit can
be set in the superblock telling the filesystem code and userspace tools
to enforce the encoding. When that optional bit is set, any attempt to
create a file name using an invalid UTF-8 sequence will fail and return
an error to userspace.
* Normalization algorithm:
The UTF-8 algorithms used to compare strings in ext4 is implemented
lives in fs/unicode, and is based on a previous version developed by
SGI. It implements the Canonical decomposition (NFD) algorithm
described by the Unicode specification 12.1, or higher, combined with
the elimination of ignorable code points (NFDi) and full
case-folding (CF) as documented in fs/unicode/utf8_norm.c.
NFD seems to be the best normalization method for EXT4 because:
- It has a lower cost than NFC/NFKC (which requires
decomposing to NFD as an intermediary step)
- It doesn't eliminate important semantic meaning like
compatibility decompositions.
Although:
- This implementation is not completely linguistic accurate, because
different languages have conflicting rules, which would require the
specialization of the filesystem to a given locale, which brings all
sorts of problems for removable media and for users who use more than
one language.
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2019-04-25 14:12:08 -04:00
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2016-01-08 16:01:22 -05:00
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2016-11-29 11:13:13 -05:00
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2016-01-08 16:01:22 -05:00
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2016-11-14 21:40:10 -05:00
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2016-01-08 16:01:22 -05:00
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2017-10-12 11:54:08 -04:00
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2016-01-08 16:01:22 -05:00
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2017-10-12 11:54:08 -04:00
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2016-01-08 16:01:22 -05:00
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2016-07-05 21:33:52 -04:00
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2016-01-08 16:01:22 -05:00
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2016-09-05 23:11:58 -04:00
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2016-01-08 16:01:22 -05:00
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2017-06-22 11:31:25 -04:00
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ext4: fix setattr project check in fssetxattr ioctl
Currently, project quota could be changed by fssetxattr
ioctl, and existed permission check inode_owner_or_capable()
is obviously not enough, just think that common users could
change project id of file, that could make users to
break project quota easily.
This patch try to follow same regular of xfs project
quota:
"Project Quota ID state is only allowed to change from
within the init namespace. Enforce that restriction only
if we are trying to change the quota ID state.
Everything else is allowed in user namespaces."
Besides that, check and set project id'state should
be an atomic operation, protect whole operation with
inode lock, ext4_ioctl_setproject() is only used for
ioctl EXT4_IOC_FSSETXATTR, we have held mnt_want_write_file()
before ext4_ioctl_setflags(), and ext4_ioctl_setproject()
is called after ext4_ioctl_setflags(), we could share
codes, so remove it inside ext4_ioctl_setproject().
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Cc: stable@kernel.org
2018-10-03 10:33:32 -04:00
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2016-01-08 16:01:22 -05:00
|
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|
|
ext4: fix setattr project check in fssetxattr ioctl
Currently, project quota could be changed by fssetxattr
ioctl, and existed permission check inode_owner_or_capable()
is obviously not enough, just think that common users could
change project id of file, that could make users to
break project quota easily.
This patch try to follow same regular of xfs project
quota:
"Project Quota ID state is only allowed to change from
within the init namespace. Enforce that restriction only
if we are trying to change the quota ID state.
Everything else is allowed in user namespaces."
Besides that, check and set project id'state should
be an atomic operation, protect whole operation with
inode lock, ext4_ioctl_setproject() is only used for
ioctl EXT4_IOC_FSSETXATTR, we have held mnt_want_write_file()
before ext4_ioctl_setflags(), and ext4_ioctl_setproject()
is called after ext4_ioctl_setflags(), we could share
codes, so remove it inside ext4_ioctl_setproject().
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Cc: stable@kernel.org
2018-10-03 10:33:32 -04:00
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2016-01-08 16:01:22 -05:00
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2017-08-06 01:00:49 -04:00
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|
|
ext4: fix setattr project check in fssetxattr ioctl
Currently, project quota could be changed by fssetxattr
ioctl, and existed permission check inode_owner_or_capable()
is obviously not enough, just think that common users could
change project id of file, that could make users to
break project quota easily.
This patch try to follow same regular of xfs project
quota:
"Project Quota ID state is only allowed to change from
within the init namespace. Enforce that restriction only
if we are trying to change the quota ID state.
Everything else is allowed in user namespaces."
Besides that, check and set project id'state should
be an atomic operation, protect whole operation with
inode lock, ext4_ioctl_setproject() is only used for
ioctl EXT4_IOC_FSSETXATTR, we have held mnt_want_write_file()
before ext4_ioctl_setflags(), and ext4_ioctl_setproject()
is called after ext4_ioctl_setflags(), we could share
codes, so remove it inside ext4_ioctl_setproject().
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Cc: stable@kernel.org
2018-10-03 10:33:32 -04:00
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2017-08-06 01:00:49 -04:00
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2016-01-08 16:01:22 -05:00
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2018-10-03 12:19:21 -04:00
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2016-01-08 16:01:22 -05:00
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|
|
ext4: fix setattr project check in fssetxattr ioctl
Currently, project quota could be changed by fssetxattr
ioctl, and existed permission check inode_owner_or_capable()
is obviously not enough, just think that common users could
change project id of file, that could make users to
break project quota easily.
This patch try to follow same regular of xfs project
quota:
"Project Quota ID state is only allowed to change from
within the init namespace. Enforce that restriction only
if we are trying to change the quota ID state.
Everything else is allowed in user namespaces."
Besides that, check and set project id'state should
be an atomic operation, protect whole operation with
inode lock, ext4_ioctl_setproject() is only used for
ioctl EXT4_IOC_FSSETXATTR, we have held mnt_want_write_file()
before ext4_ioctl_setflags(), and ext4_ioctl_setproject()
is called after ext4_ioctl_setflags(), we could share
codes, so remove it inside ext4_ioctl_setproject().
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Cc: stable@kernel.org
2018-10-03 10:33:32 -04:00
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2016-01-08 16:01:22 -05:00
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2016-07-05 21:33:52 -04:00
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2017-06-22 11:46:48 -04:00
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2016-07-05 21:33:52 -04:00
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2017-06-22 11:46:48 -04:00
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2016-07-05 21:33:52 -04:00
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2016-01-08 16:01:22 -05:00
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2016-07-05 21:33:52 -04:00
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2016-01-08 16:01:22 -05:00
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2016-11-14 21:40:10 -05:00
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2016-01-08 16:01:22 -05:00
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2016-11-29 11:18:39 -05:00
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2016-01-08 16:01:22 -05:00
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2017-04-30 00:40:44 -04:00
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2017-02-05 19:47:14 -05:00
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2018-02-18 20:53:23 -05:00
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2017-02-05 19:47:14 -05:00
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2018-02-18 23:45:18 -05:00
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2017-02-05 19:47:14 -05:00
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2018-02-18 23:16:28 -05:00
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2018-02-18 23:45:18 -05:00
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2017-02-05 19:47:14 -05:00
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2017-04-30 00:36:53 -04:00
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2017-09-29 21:39:59 -04:00
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ext4: fix setattr project check in fssetxattr ioctl
Currently, project quota could be changed by fssetxattr
ioctl, and existed permission check inode_owner_or_capable()
is obviously not enough, just think that common users could
change project id of file, that could make users to
break project quota easily.
This patch try to follow same regular of xfs project
quota:
"Project Quota ID state is only allowed to change from
within the init namespace. Enforce that restriction only
if we are trying to change the quota ID state.
Everything else is allowed in user namespaces."
Besides that, check and set project id'state should
be an atomic operation, protect whole operation with
inode lock, ext4_ioctl_setproject() is only used for
ioctl EXT4_IOC_FSSETXATTR, we have held mnt_want_write_file()
before ext4_ioctl_setflags(), and ext4_ioctl_setproject()
is called after ext4_ioctl_setflags(), we could share
codes, so remove it inside ext4_ioctl_setproject().
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Cc: stable@kernel.org
2018-10-03 10:33:32 -04:00
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2008-04-29 22:03:54 -04:00
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2006-10-11 01:20:50 -07:00
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2013-01-23 17:07:38 -05:00
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2011-09-09 18:36:51 -04:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2008-09-08 22:25:24 -04:00
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2006-10-11 01:20:50 -07:00
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2017-04-30 00:36:53 -04:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2016-01-08 16:01:22 -05:00
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2006-10-11 01:20:50 -07:00
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2011-03-23 16:43:26 -07:00
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2006-10-11 01:20:50 -07:00
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2016-11-29 11:18:39 -05:00
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2011-11-23 11:57:51 -05:00
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2008-02-15 14:37:46 -08:00
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2016-01-22 15:40:57 -05:00
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2016-01-08 16:01:22 -05:00
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2016-01-22 15:40:57 -05:00
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2011-12-09 08:06:57 -05:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2011-03-23 16:43:26 -07:00
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2006-10-11 01:20:50 -07:00
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2008-02-15 14:37:46 -08:00
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2014-10-13 03:36:16 -04:00
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2012-04-29 18:31:10 -04:00
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2011-11-23 11:57:51 -05:00
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2008-02-15 14:37:46 -08:00
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2006-10-11 01:20:50 -07:00
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2016-01-22 15:40:57 -05:00
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2013-02-08 21:59:22 -05:00
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2008-02-15 14:37:46 -08:00
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2012-01-03 02:31:52 +01:00
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2008-02-15 14:37:46 -08:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2016-11-14 21:40:10 -05:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2012-01-03 02:31:52 +01:00
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2016-01-22 15:40:57 -05:00
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2008-02-15 14:37:46 -08:00
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2011-12-09 08:06:57 -05:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2009-07-13 09:30:17 -04:00
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2006-10-11 01:20:50 -07:00
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2011-07-26 21:35:44 -04:00
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2006-10-11 01:20:50 -07:00
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2012-01-04 17:09:52 -05:00
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2006-10-11 01:20:50 -07:00
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2015-10-17 16:18:43 -04:00
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2011-09-09 18:36:51 -04:00
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2012-01-04 17:09:52 -05:00
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2011-09-09 18:36:51 -04:00
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2011-11-23 11:57:51 -05:00
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2008-02-15 14:37:46 -08:00
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2012-01-04 17:09:52 -05:00
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2008-02-15 14:37:46 -08:00
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2006-10-11 01:20:53 -07:00
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2009-07-13 09:30:17 -04:00
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2008-10-10 20:29:21 -04:00
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2011-12-09 08:06:57 -05:00
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2012-01-04 17:09:52 -05:00
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2011-07-26 21:35:44 -04:00
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2006-10-11 01:20:50 -07:00
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2009-06-17 19:24:03 -04:00
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2012-08-28 12:52:22 -04:00
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2009-06-17 19:24:03 -04:00
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2009-12-06 23:38:31 -05:00
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2009-06-17 19:24:03 -04:00
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2009-12-06 23:38:31 -05:00
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2009-06-17 19:24:03 -04:00
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2012-08-28 12:52:22 -04:00
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2009-06-17 19:24:03 -04:00
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2012-08-28 12:52:22 -04:00
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2009-12-06 23:38:31 -05:00
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2009-06-17 19:24:03 -04:00
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2015-10-17 16:18:43 -04:00
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2011-09-09 18:36:51 -04:00
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2012-08-26 21:00:03 -04:00
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2016-02-26 15:19:49 -08:00
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2011-09-09 18:36:51 -04:00
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2011-11-23 11:57:51 -05:00
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2009-12-06 23:38:31 -05:00
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2012-08-28 12:52:22 -04:00
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2009-06-17 19:24:03 -04:00
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2011-12-09 08:06:57 -05:00
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2009-06-17 19:24:03 -04:00
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2010-05-17 07:00:00 -04:00
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2010-03-04 00:39:24 -05:00
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2009-12-06 23:38:31 -05:00
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2012-08-28 12:52:22 -04:00
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2009-06-17 19:24:03 -04:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2017-09-29 21:39:59 -04:00
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2006-10-11 01:20:50 -07:00
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2017-09-29 21:39:59 -04:00
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2006-10-11 01:20:50 -07:00
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2008-01-28 23:58:26 -05:00
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2008-09-13 12:52:26 -04:00
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2011-03-23 16:43:26 -07:00
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2008-09-13 12:52:26 -04:00
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2011-11-23 11:57:51 -05:00
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2008-09-13 12:52:26 -04:00
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2016-01-22 15:40:57 -05:00
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2008-09-13 12:52:26 -04:00
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2016-01-22 15:40:57 -05:00
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2011-12-09 08:06:57 -05:00
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2008-09-13 12:52:26 -04:00
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2008-01-28 23:58:26 -05:00
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2009-02-26 01:04:07 -05:00
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2011-03-23 16:43:26 -07:00
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2009-02-26 01:04:07 -05:00
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2011-11-23 11:57:51 -05:00
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2009-02-26 01:04:07 -05:00
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2011-12-09 08:06:57 -05:00
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2009-02-26 01:04:07 -05:00
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2013-04-08 12:54:05 -04:00
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2014-10-03 12:47:23 -04:00
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2013-04-08 12:54:05 -04:00
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2014-10-03 12:47:23 -04:00
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2013-04-08 12:54:05 -04:00
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2012-01-04 17:09:44 -05:00
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2013-01-13 08:41:45 -05:00
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2012-01-04 17:09:44 -05:00
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2012-07-19 11:19:07 +04:00
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2012-01-04 17:09:44 -05:00
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2012-07-19 11:19:07 +04:00
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2019-04-25 13:06:18 -04:00
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2013-01-13 08:41:45 -05:00
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2012-01-04 17:09:44 -05:00
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2010-11-19 21:47:07 -05:00
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2011-02-23 12:42:32 -05:00
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2010-11-19 21:47:07 -05:00
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2011-02-23 12:42:32 -05:00
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2019-03-23 12:10:29 -04:00
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2011-10-18 10:59:51 -04:00
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2010-11-19 21:47:07 -05:00
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2011-02-23 17:49:51 -05:00
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2010-11-19 21:47:07 -05:00
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2011-10-18 10:59:51 -04:00
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2010-11-19 21:47:07 -05:00
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2013-08-16 22:05:14 -04:00
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2010-11-19 21:47:07 -05:00
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2016-11-26 19:07:49 -05:00
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2016-09-30 01:49:55 -04:00
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2016-11-26 19:07:49 -05:00
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2016-09-30 01:49:55 -04:00
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2015-04-11 07:48:01 -04:00
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2018-12-12 15:20:12 +05:30
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2015-04-11 07:48:01 -04:00
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2016-12-01 11:54:18 -05:00
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2015-04-11 07:48:01 -04:00
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2015-06-08 12:23:21 -04:00
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2015-04-11 07:48:01 -04:00
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2016-12-01 11:55:51 -05:00
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2015-04-11 07:48:01 -04:00
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2016-11-26 19:07:49 -05:00
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2015-04-11 07:48:01 -04:00
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2016-01-08 16:01:22 -05:00
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2016-09-05 23:11:58 -04:00
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2016-01-08 16:01:22 -05:00
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2016-11-29 11:18:39 -05:00
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2016-01-08 16:01:22 -05:00
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2016-01-22 15:40:57 -05:00
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|
ext4: fix setattr project check in fssetxattr ioctl
Currently, project quota could be changed by fssetxattr
ioctl, and existed permission check inode_owner_or_capable()
is obviously not enough, just think that common users could
change project id of file, that could make users to
break project quota easily.
This patch try to follow same regular of xfs project
quota:
"Project Quota ID state is only allowed to change from
within the init namespace. Enforce that restriction only
if we are trying to change the quota ID state.
Everything else is allowed in user namespaces."
Besides that, check and set project id'state should
be an atomic operation, protect whole operation with
inode lock, ext4_ioctl_setproject() is only used for
ioctl EXT4_IOC_FSSETXATTR, we have held mnt_want_write_file()
before ext4_ioctl_setflags(), and ext4_ioctl_setproject()
is called after ext4_ioctl_setflags(), we could share
codes, so remove it inside ext4_ioctl_setproject().
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Cc: stable@kernel.org
2018-10-03 10:33:32 -04:00
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2016-01-08 16:01:22 -05:00
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|
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|
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|
|
|
ext4: fix setattr project check in fssetxattr ioctl
Currently, project quota could be changed by fssetxattr
ioctl, and existed permission check inode_owner_or_capable()
is obviously not enough, just think that common users could
change project id of file, that could make users to
break project quota easily.
This patch try to follow same regular of xfs project
quota:
"Project Quota ID state is only allowed to change from
within the init namespace. Enforce that restriction only
if we are trying to change the quota ID state.
Everything else is allowed in user namespaces."
Besides that, check and set project id'state should
be an atomic operation, protect whole operation with
inode lock, ext4_ioctl_setproject() is only used for
ioctl EXT4_IOC_FSSETXATTR, we have held mnt_want_write_file()
before ext4_ioctl_setflags(), and ext4_ioctl_setproject()
is called after ext4_ioctl_setflags(), we could share
codes, so remove it inside ext4_ioctl_setproject().
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Cc: stable@kernel.org
2018-10-03 10:33:32 -04:00
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2016-01-22 15:40:57 -05:00
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|
|
|
2016-01-08 16:01:22 -05:00
|
|
|
|
ext4: fix setattr project check in fssetxattr ioctl
Currently, project quota could be changed by fssetxattr
ioctl, and existed permission check inode_owner_or_capable()
is obviously not enough, just think that common users could
change project id of file, that could make users to
break project quota easily.
This patch try to follow same regular of xfs project
quota:
"Project Quota ID state is only allowed to change from
within the init namespace. Enforce that restriction only
if we are trying to change the quota ID state.
Everything else is allowed in user namespaces."
Besides that, check and set project id'state should
be an atomic operation, protect whole operation with
inode lock, ext4_ioctl_setproject() is only used for
ioctl EXT4_IOC_FSSETXATTR, we have held mnt_want_write_file()
before ext4_ioctl_setflags(), and ext4_ioctl_setproject()
is called after ext4_ioctl_setflags(), we could share
codes, so remove it inside ext4_ioctl_setproject().
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Cc: stable@kernel.org
2018-10-03 10:33:32 -04:00
|
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2016-01-08 16:01:22 -05:00
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2017-02-20 15:34:59 -05:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2006-10-11 01:20:53 -07:00
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2006-10-11 01:20:50 -07:00
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2010-05-17 06:00:00 -04:00
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2017-09-29 21:39:59 -04:00
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2010-05-17 06:00:00 -04:00
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2017-09-29 21:39:59 -04:00
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2010-05-17 06:00:00 -04:00
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2010-05-15 00:00:00 -04:00
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2012-01-04 17:09:44 -05:00
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|
2013-08-16 22:05:14 -04:00
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2015-04-11 07:48:01 -04:00
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2017-02-20 15:34:59 -05:00
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2017-04-30 00:36:53 -04:00
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2010-05-15 00:00:00 -04:00
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2006-10-11 01:20:50 -07:00
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2008-04-29 22:03:54 -04:00
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2006-10-11 01:20:50 -07:00
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