request_key never return NULL,so no need do non-NULL check.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
The code of ceph_unreserve_caps() and error handling in
ceph_reserve_caps() are duplicated, so introduce a helper
__ceph_unreserve_caps() to reduce duplicated code.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
We do not check return code for __do_request() in all callers,
so change to void return type.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
In ceph_llseek(), we compare fsc->max_file_size and inode->i_size to
choose max file size limit.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
ceph_setattr() finally calls vfs function inode_newsize_ok()
to do offset validation and that is based on sb->s_maxbytes.
Because we set sb->s_maxbytes to MAX_LFS_FILESIZE to through
VFS check and do proper offset validation in cephfs level,
we need adding proper offset validation before calling
inode_newsize_ok().
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
If the offset is larger or equal to both real file size and
max file size, then return -EFBIG.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
If the range is larger than both real file size and limit of
max file size, then return -EFBIG.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
In order to not bother to VFS and other specific filesystems,
we decided to do offset validation inside ceph kernel client,
so just simply set sb->s_maxbytes to MAX_LFS_FILESIZE so that
it can successfully pass VFS check. We add new field max_file_size
in ceph_fs_client to store real file size limit and doing proper
check based on it.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Avoid scribbling over memory if the received reply/challenge is larger
than the buffer supplied with the authorizer.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Derive the signature from the entire buffer (both AES cipher blocks)
instead of using just the first half of the first block, leaving out
data_crc entirely.
This addresses CVE-2018-1129.
Link: http://tracker.ceph.com/issues/24837
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
When a client authenticates with a service, an authorizer is sent with
a nonce to the service (ceph_x_authorize_[ab]) and the service responds
with a mutation of that nonce (ceph_x_authorize_reply). This lets the
client verify the service is who it says it is but it doesn't protect
against a replay: someone can trivially capture the exchange and reuse
the same authorizer to authenticate themselves.
Allow the service to reject an initial authorizer with a random
challenge (ceph_x_authorize_challenge). The client then has to respond
with an updated authorizer proving they are able to decrypt the
service's challenge and that the new authorizer was produced for this
specific connection instance.
The accepting side requires this challenge and response unconditionally
if the client side advertises they have CEPHX_V2 feature bit.
This addresses CVE-2018-1128.
Link: http://tracker.ceph.com/issues/24836
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Will be used for encrypting both the initial and updated authorizers.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Will be used for decrypting the server challenge which is only preceded
by ceph_x_encrypt_header.
Drop struct_v check to allow for extending ceph_x_encrypt_header in the
future.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Will be used for sending ceph_msg_connect with an updated authorizer,
after the server challenges the initial authorizer.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
We already copy authorizer_reply_buf and authorizer_reply_buf_len into
ceph_connection. Factoring out __prepare_write_connect() requires two
more: authorizer_buf and authorizer_buf_len. Store the pointer to the
handshake in con->auth rather than piling on.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Remove blank lines at end of file and trailing whitespace.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Use new return type vm_fault_t for page_mkwrite
and fault handler.
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
The ceph_mds_request stamp still uses the deprecated timespec structure,
this converts it over as well.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
The request mtime field is used all over ceph, and is currently
represented as a 'timespec' structure in Linux. This changes it to
timespec64 to allow times beyond 2038, modifying all users at the
same time.
[ Remove now redundant ts variable in writepage_nounlock(). ]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Since the vfs structures are all using timespec64, we can now
change the internal representation, using ceph_encode_timespec64 and
ceph_decode_timespec64.
In case of ceph_aux_inode however, we need to avoid doing a memcmp()
on uninitialized padding data, so the members of the i_mtime field get
copied individually into 64-bit integers.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
ceph_mdsc_create_request() is one of the last callers of the
deprecated current_kernel_time() as well as timespec_trunc().
This changes it to use the timespec64 based interfaces instead,
though we still need to convert the result until we are ready to
change over req->r_stamp.
The output of the two functions, ktime_get_coarse_real_ts64() and
current_kernel_time() is the same coarse-granular timestamp,
the only difference here is that ktime_get_coarse_real_ts64()
doesn't overflow in 2038.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
ceph_con_keepalive_expired() is the last user of timespec_add() and some
of the last uses of ktime_get_real_ts(). Replacing this with timespec64
based interfaces lets us remove that deprecated API.
I'm introducing new ceph_encode_timespec64()/ceph_decode_timespec64()
here that take timespec64 structures and convert to/from ceph_timespec,
which is defined to have an unsigned 32-bit tv_sec member. This extends
the range of valid times to year 2106, avoiding the year 2038 overflow.
The ceph file system portion still uses the old functions for inode
timestamps, this will be done separately after the VFS layer is converted.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
When file num exceeds quota limit, should call d_drop to drop
dentry from cache as well.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
When file num exceeds quota limit or fails from ceph_per_init_acls()
should call d_drop to drop dentry from cache as well.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
In order to return correct error code should replace variable ret
using err in error case.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
GCC8 prints following warning:
fs/ceph/mds_client.c:3683:2: warning: ‘strncpy’ output may be truncated
copying 64 bytes from a string of length 64 [-Wstringop-truncation]
[ Change to strscpy() while at it. ]
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Cloning across namespaces isn't supported yet -- for now both the
parent and the clone have to live in the same namespace, whether the
default (i.e. "") or a user-created namespace.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
There is no reason to continue option parsing after detecting
bad option.
[ Return match_int() errors from ceph_parse_options() to match the
behaviour of parse_rbd_opts_token() and parse_fsopt_token(). ]
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
The wire format dictates that the length of string fits into 4 bytes.
Take u32 instead of size_t to reflect that.
We were already truncating len in ceph_pagelist_encode_32() -- this
just pushes that truncation one level up.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
The wire format dictates that payload_len fits into 4 bytes. Take u32
instead of size_t to reflect that.
All callers pass a small integer, so no changes required.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
It's better to restore ctime as well in the case of restoring old mode
in ceph_set_acl().
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
When the size of acl extended attribution is larger than pre-allocated
value buffer size, we will hit error '-ERANGE' and it's probabaly caused
by concurrent get/set acl from different clients. In this case, current
logic just sets acl to NULL so that we cannot get proper information but
the operation looks successful.
This patch adds retry logic for error -ERANGE and return -EIO if fail
from the retry. Additionally, print real errno when failing from
__ceph_getxattr().
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
introduced in 4.18-rc4.
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Some miscellaneous ext4 fixes for 4.18; one fix is for a regression
introduced in 4.18-rc4.
Sorry for the late-breaking pull. I was originally going to wait for
the next merge window, but Eric Whitney found a regression introduced
in 4.18-rc4, so I decided to push out the regression plus the other
fixes now. (The other commits have been baking in linux-next since
early July)"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix check to prevent initializing reserved inodes
ext4: check for allocation block validity with block group locked
ext4: fix inline data updates with checksums enabled
ext4: clear mmp sequence number when remounting read-only
ext4: fix false negatives *and* false positives in ext4_check_descriptors()
Anatoly Trosinenko reports that a corrupted squashfs image can cause a
kernel oops. It turns out that squashfs can end up being confused about
negative fragment lengths.
The regular squashfs_read_data() does check for negative lengths, but
squashfs_read_metadata() did not, and the fragment size code just
blindly trusted the on-disk value. Fix both the fragment parsing and
the metadata reading code.
Reported-by: Anatoly Trosinenko <anatoly.trosinenko@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Phillip Lougher <phillip@squashfs.org.uk>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 8844618d8aa7: "ext4: only look at the bg_flags field if it is
valid" will complain if block group zero does not have the
EXT4_BG_INODE_ZEROED flag set. Unfortunately, this is not correct,
since a freshly created file system has this flag cleared. It gets
almost immediately after the file system is mounted read-write --- but
the following somewhat unlikely sequence will end up triggering a
false positive report of a corrupted file system:
mkfs.ext4 /dev/vdc
mount -o ro /dev/vdc /vdc
mount -o remount,rw /dev/vdc
Instead, when initializing the inode table for block group zero, test
to make sure that itable_unused count is not too large, since that is
the case that will result in some or all of the reserved inodes
getting cleared.
This fixes the failures reported by Eric Whiteney when running
generic/230 and generic/231 in the the nojournal test case.
Fixes: 8844618d8a ("ext4: only look at the bg_flags field if it is valid")
Reported-by: Eric Whitney <enwlinux@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
distributions that have certain systemd versions in some cases
combined with patches to libcrypt for FIPS/FEDRAMP compliance, have
led to boot-time stalls for some hardware. The reaction by some
distros and Linux sysadmins has been to install packages that try to
do complicated things with the CPU and hope that leads to randomness.
To mitigate this, if RDRAND is available, mix it into entropy provided
by userspace. It won't hurt. and it will probably help.
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Merge tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random
Pull random fixes from Ted Ts'o:
"In reaction to the fixes to address CVE-2018-1108, some Linux
distributions that have certain systemd versions in some cases
combined with patches to libcrypt for FIPS/FEDRAMP compliance, have
led to boot-time stalls for some hardware.
The reaction by some distros and Linux sysadmins has been to install
packages that try to do complicated things with the CPU and hope that
leads to randomness.
To mitigate this, if RDRAND is available, mix it into entropy provided
by userspace. It won't hurt, and it will probably help"
* tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
random: mix rdrand with entropy sent in from userspace
- OF flag fix for special regulator flags.
- Fix up the Uniphier IRQ callback.
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Merge tag 'gpio-v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Just a smallish OF fix and a driver fix:
- OF flag fix for special regulator flags
- fix up the Uniphier IRQ callback"
* tag 'gpio-v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: uniphier: set legitimate irq trigger type in .to_irq hook
gpio: of: Handle fixed regulator flags properly
- Revert an errata workaround for the BCM5300X platform that was
merged for v4.18-rc2 but has been found to cause hangs on at least
systems using the BCM4718A1.
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Merge tag 'mips_fixes_4.18_5' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fix from Paul Burton:
"Here's one more MIPS fix, reverting an errata workaround that was
merged for v4.18-rc2 but has since been found to cause system hangs on
some BCM4718A1-based systems by the OpenWRT project"
* tag 'mips_fixes_4.18_5' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
Revert "MIPS: BCM47XX: Enable 74K Core ExternalSync for PCIe erratum"
Pull i2c fixes from Wolfram Sang:
"Some driver bugfixes"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: imx: use open drain for recovery GPIO
i2c: rcar: handle RXDMA HW behaviour on Gen3
i2c: imx: Fix reinit_completion() use
i2c: davinci: Avoid zero value of CLKH
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Merge tag 'for-linus-20180727' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"Bigger than usual at this time, mostly due to the O_DIRECT corruption
issue and the fact that I was on vacation last week. This contains:
- NVMe pull request with two fixes for the FC code, and two target
fixes (Christoph)
- a DIF bio reset iteration fix (Greg Edwards)
- two nbd reply and requeue fixes (Josef)
- SCSI timeout fixup (Keith)
- a small series that fixes an issue with bio_iov_iter_get_pages(),
which ended up causing corruption for larger sized O_DIRECT writes
that ended up racing with buffered writes (Martin Wilck)"
* tag 'for-linus-20180727' of git://git.kernel.dk/linux-block:
block: reset bi_iter.bi_done after splitting bio
block: bio_iov_iter_get_pages: pin more pages for multi-segment IOs
blkdev: __blkdev_direct_IO_simple: fix leak in error case
block: bio_iov_iter_get_pages: fix size of last iovec
nvmet: only check for filebacking on -ENOTBLK
nvmet: fixup crash on NULL device path
scsi: set timed out out mq requests to complete
blk-mq: export setting request completion state
nvme: if_ready checks to fail io to deleting controller
nvmet-fc: fix target sgl list on large transfers
nbd: handle unexpected replies better
nbd: don't requeue the same request twice.
Merge misc fixes from Andrew Morton:
"11 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
kvm, mm: account shadow page tables to kmemcg
zswap: re-check zswap_is_full() after do zswap_shrink()
include/linux/eventfd.h: include linux/errno.h
mm: fix vma_is_anonymous() false-positives
mm: use vma_init() to initialize VMAs on stack and data segments
mm: introduce vma_init()
mm: fix exports that inadvertently make put_page() EXPORT_SYMBOL_GPL
ipc/sem.c: prevent queue.status tearing in semop
mm: disallow mappings that conflict for devm_memremap_pages()
kasan: only select SLUB_DEBUG with SYSFS=y
delayacct: fix crash in delayacct_blkio_end() after delayacct init failure
- Fix disabling of kpti on Thunder-X machines
- Fix premature BUILD_BUG_ON() found with randconfig
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Inevitably, after saying that I hoped we would be done on the fixes
front, a couple of issues have cropped up over the last week. Next
time I'll stay schtum.
We've fixed an over-eager BUILD_BUG_ON() which Arnd ran into with
arndconfig, as well as ensuring that KPTI really is disabled on
Thunder-X1, where the cure is worse than the disease (this regressed
when we reworked the heterogeneous CPU feature checking).
Summary:
- Fix disabling of kpti on Thunder-X machines
- Fix premature BUILD_BUG_ON() found with randconfig"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: fix vmemmap BUILD_BUG_ON() triggering on !vmemmap setups
arm64: Check for errata before evaluating cpu features
YueHaibing