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* Merge tag 'ceph-for-4.21-rc1' of git://github.com/ceph/ceph-clientLinus Torvalds2019-01-055-128/+153
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ceph updates from Ilya Dryomov: "A fairly quiet round: a couple of messenger performance improvements from myself and a few cap handling fixes from Zheng" * tag 'ceph-for-4.21-rc1' of git://github.com/ceph/ceph-client: ceph: don't encode inode pathes into reconnect message ceph: update wanted caps after resuming stale session ceph: skip updating 'wanted' caps if caps are already issued ceph: don't request excl caps when mount is readonly ceph: don't update importing cap's mseq when handing cap export libceph: switch more to bool in ceph_tcp_sendmsg() libceph: use MSG_SENDPAGE_NOTLAST with ceph_tcp_sendpage() libceph: use sock_no_sendpage() as a fallback in ceph_tcp_sendpage() libceph: drop last_piece logic from write_partial_message_data() ceph: remove redundant assignment ceph: cleanup splice_dentry()
| * ceph: don't encode inode pathes into reconnect messageYan, Zheng2018-12-261-45/+49
| | | | | | | | | | | | | | mds hasn't used inode pathes since introducing inode backtrace. Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| * ceph: update wanted caps after resuming stale sessionYan, Zheng2018-12-263-33/+58
| | | | | | | | | | | | | | | | | | | | | | | | mds contains an optimization, it does not re-issue stale caps if client does not want any cap. A special case of the optimization is that client wants some caps, but skipped updating 'wanted'. For this case, client needs to update 'wanted' when stale session get renewed. Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| * ceph: skip updating 'wanted' caps if caps are already issuedYan, Zheng2018-12-261-10/+17
| | | | | | | | | | | | | | | | When reading cached inode that already has Fscr caps, this can avoid two cap messages (one updats 'wanted' caps, one clears 'wanted' caps). Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| * ceph: don't request excl caps when mount is readonlyYan, Zheng2018-12-261-2/+5
| | | | | | | | | | Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| * ceph: don't update importing cap's mseq when handing cap exportYan, Zheng2018-12-261-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | Updating mseq makes client think importer mds has accepted all prior cap messages and importer mds knows what caps client wants. Actually some cap messages may have been dropped because of mseq mismatch. If mseq is left untouched, importing cap's mds_wanted later will get reset by cap import message. Cc: stable@vger.kernel.org Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| * ceph: remove redundant assignmentChengguang Xu2018-12-261-1/+0
| | | | | | | | | | | | | | | | There is redundant assighment of variable i in ceph_mdsmap_get_random_mds(), just remvoe it. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| * ceph: cleanup splice_dentry()Yan, Zheng2018-12-261-36/+24
| | | | | | | | | | | | | | | | | | splice_dentry() may drop the original dentry and return other dentry. It relies on its caller to update pointer that points to the dropped dentry. This is error-prone. Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | fs: don't open code lru_to_page()Nikolay Borisov2019-01-041-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Multiple filesystems open code lru_to_page(). Rectify this by moving the macro from mm_inline (which is specific to lru stuff) to the more generic mm.h header and start using the macro where appropriate. No functional changes. Link: http://lkml.kernel.org/r/20181129104810.23361-1-nborisov@suse.com Link: https://lkml.kernel.org/r/20181129075301.29087-1-nborisov@suse.com Signed-off-by: Nikolay Borisov <nborisov@suse.com> Acked-by: Michal Hocko <mhocko@suse.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Pankaj gupta <pagupta@redhat.com> Acked-by: "Yan, Zheng" <zyan@redhat.com> [ceph] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | mm: convert totalram_pages and totalhigh_pages variables to atomicArun KS2018-12-281-1/+1
|/ | | | | | | | | | | | | | | | | | | | | | | totalram_pages and totalhigh_pages are made static inline function. Main motivation was that managed_page_count_lock handling was complicating things. It was discussed in length here, https://lore.kernel.org/patchwork/patch/995739/#1181785 So it seemes better to remove the lock and convert variables to atomic, with preventing poteintial store-to-read tearing as a bonus. [akpm@linux-foundation.org: coding style fixes] Link: http://lkml.kernel.org/r/1542090790-21750-4-git-send-email-arunks@codeaurora.org Signed-off-by: Arun KS <arunks@codeaurora.org> Suggested-by: Michal Hocko <mhocko@suse.com> Suggested-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Reviewed-by: Pavel Tatashin <pasha.tatashin@soleen.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ceph: make 'nocopyfrom' a default mount optionLuis Henriques2018-12-112-3/+5
| | | | | | | | | | | | | | | | | Since we found a problem with the 'copy-from' operation after objects have been truncated, offloading object copies to OSDs should be discouraged until the issue is fixed. Thus, this patch adds the 'nocopyfrom' mount option to the default mount options which effectily means that remote copies won't be done in copy_file_range unless they are explicitly enabled at mount time. [ Adjust ceph_show_options() accordingly. ] Link: https://tracker.ceph.com/issues/37378 Signed-off-by: Luis Henriques <lhenriques@suse.com> Reviewed-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* libceph: assume argonaut on the server sideIlya Dryomov2018-11-081-9/+3
| | | | | | | | | | | No one is running pre-argonaut. In addition one of the argonaut features (NOSRCADDR) has been required since day one (and a half, 2.6.34 vs 2.6.35) of the kernel client. Allow for the possibility of reusing these feature bits later. Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Sage Weil <sage@redhat.com>
* ceph: quota: fix null pointer dereference in quota checkLuis Henriques2018-11-081-1/+2
| | | | | | | | | | | | | | | This patch fixes a possible null pointer dereference in check_quota_exceeded, detected by the static checker smatch, with the following warning:    fs/ceph/quota.c:240 check_quota_exceeded()     error: we previously assumed 'realm' could be null (see line 188) Fixes: b7a2921765cf ("ceph: quota: support for ceph.quota.max_files") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Luis Henriques <lhenriques@suse.com> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* ceph: add destination file data sync before doing any remote copyLuis Henriques2018-11-081-2/+9
| | | | | | | | | | | | | | | If we try to copy into a file that was just written, any data that is remote copied will be overwritten by our buffered writes once they are flushed.  When this happens, the call to invalidate_inode_pages2_range will also return a -EBUSY error. This patch fixes this by also sync'ing the destination file before starting any copy. Fixes: 503f82a9932d ("ceph: support copy_file_range file operation") Signed-off-by: Luis Henriques <lhenriques@suse.com> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* Merge branch 'work.afs' of ↵Linus Torvalds2018-11-021-5/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull AFS updates from Al Viro: "AFS series, with some iov_iter bits included" * 'work.afs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (26 commits) missing bits of "iov_iter: Separate type from direction and use accessor functions" afs: Probe multiple fileservers simultaneously afs: Fix callback handling afs: Eliminate the address pointer from the address list cursor afs: Allow dumping of server cursor on operation failure afs: Implement YFS support in the fs client afs: Expand data structure fields to support YFS afs: Get the target vnode in afs_rmdir() and get a callback on it afs: Calc callback expiry in op reply delivery afs: Fix FS.FetchStatus delivery from updating wrong vnode afs: Implement the YFS cache manager service afs: Remove callback details from afs_callback_break struct afs: Commit the status on a new file/dir/symlink afs: Increase to 64-bit volume ID and 96-bit vnode ID for YFS afs: Don't invoke the server to read data beyond EOF afs: Add a couple of tracepoints to log I/O errors afs: Handle EIO from delivery function afs: Fix TTL on VL server and address lists afs: Implement VL server rotation afs: Improve FS server rotation error handling ...
| * iov_iter: Separate type from direction and use accessor functionsDavid Howells2018-10-241-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the iov_iter struct, separate the iterator type from the iterator direction and use accessor functions to access them in most places. Convert a bunch of places to use switch-statements to access them rather then chains of bitwise-AND statements. This makes it easier to add further iterator types. Also, this can be more efficient as to implement a switch of small contiguous integers, the compiler can use ~50% fewer compare instructions than it has to use bitwise-and instructions. Further, cease passing the iterator type into the iterator setup function. The iterator function can set that itself. Only the direction is required. Signed-off-by: David Howells <dhowells@redhat.com>
| * iov_iter: Use accessor functionDavid Howells2018-10-241-1/+1
| | | | | | | | | | | | | | | | | | Use accessor functions to access an iterator's type and direction. This allows for the possibility of using some other method of determining the type of iterator than if-chains with bitwise-AND conditions. Signed-off-by: David Howells <dhowells@redhat.com>
* | ceph: new mount option to disable usage of copy-from opLuis Henriques2018-10-223-0/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a new mount option 'nocopyfrom' that will prevent the usage of the RADOS 'copy-from' operation in cephfs. This could be useful, for example, for an administrator to temporarily mitigate any possible bugs in the 'copy-from' implementation. Currently, only copy_file_range uses this RADOS operation. Setting this mount option will result in this syscall reverting to the default VFS implementation, i.e. to perform the copies locally instead of doing remote object copies. Signed-off-by: Luis Henriques <lhenriques@suse.com> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | ceph: support copy_file_range file operationLuis Henriques2018-10-221-1/+293
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit implements support for the copy_file_range syscall in cephfs. It is implemented using the RADOS 'copy-from' operation, which allows to do a remote object copy, without the need to download/upload data from/to the OSDs. Some manual copy may however be required if the source/destination file offsets aren't object aligned or if the copy length is smaller than the object size. Signed-off-by: Luis Henriques <lhenriques@suse.com> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | ceph: add non-blocking parameter to ceph_try_get_caps()Luis Henriques2018-10-223-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | ceph_try_get_caps currently calls try_get_cap_refs with the nonblock parameter always set to 'true'. This change adds a new parameter that allows to set it's value. This will be useful for a follow-up patch that will need to get two sets of capabilities for two different inodes without risking a deadlock. Signed-off-by: Luis Henriques <lhenriques@suse.com> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | libceph: preallocate message data itemsIlya Dryomov2018-10-221-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently message data items are allocated with ceph_msg_data_create() in setup_request_data() inside send_request(). send_request() has never been allowed to fail, so each allocation is followed by a BUG_ON: data = ceph_msg_data_create(...); BUG_ON(!data); It's been this way since support for multiple message data items was added in commit 6644ed7b7e04 ("libceph: make message data be a pointer") in 3.10. There is no reason to delay the allocation of message data items until the last possible moment and we certainly don't need a linked list of them as they are only ever appended to the end and never erased. Make ceph_msg_new2() take max_data_items and adapt the rest of the code. Reported-by: Jerry Lee <leisurelysw24@gmail.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | libceph, rbd, ceph: move ceph_osdc_alloc_messages() callsIlya Dryomov2018-10-221-5/+5
| | | | | | | | | | | | | | | | | | The current requirement is that ceph_osdc_alloc_messages() should be called after oid and oloc are known. In preparation for preallocating message data items, move ceph_osdc_alloc_messages() further down, so that it is called when OSD op codes are known. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | ceph: num_ops is off by one in ceph_aio_retry_work()Ilya Dryomov2018-10-221-1/+1
| | | | | | | | | | | | Two OSD op slots are allocated, but only one is ever used. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | ceph: set timeout conditionally in __cap_delay_requeueXuehan Xu2018-10-221-6/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | __cap_delay_requeue could be invoked through ceph_check_caps when there exists caps that needs to be sent and are delayed by "i_hold_caps_min" or "i_hold_caps_max". If __cap_delay_requeue sets timeout unconditionally, there could be a chance that some "wanted" caps can not be release for a long since their timeouts are reset every time they get delayed. Fixes: http://tracker.ceph.com/issues/36369 Signed-off-by: Xuehan Xu <xuxuehan@360.cn> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | libceph: don't consume a ref on pagelist in ceph_msg_data_add_pagelist()Ilya Dryomov2018-10-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Because send_mds_reconnect() wants to send a message with a pagelist and pass the ownership to the messenger, ceph_msg_data_add_pagelist() consumes a ref which is then put in ceph_msg_data_destroy(). This makes managing pagelists in the OSD client (where they are wrapped in ceph_osd_data) unnecessarily hard because the handoff only happens in ceph_osdc_start_request() instead of when the pagelist is passed to ceph_osd_data_pagelist_init(). I counted several memory leaks on various error paths. Fix up ceph_msg_data_add_pagelist() and carry a pagelist ref in ceph_osd_data. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | libceph: introduce ceph_pagelist_alloc()Ilya Dryomov2018-10-223-6/+3
| | | | | | | | | | | | | | struct ceph_pagelist cannot be embedded into anything else because it has its own refcount. Merge allocation and initialization together. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | ceph: only allow punch hole mode in fallocateLuis Henriques2018-10-221-36/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current implementation of cephfs fallocate isn't correct as it doesn't really reserve the space in the cluster, which means that a subsequent call to a write may actually fail due to lack of space. In fact, it is currently possible to fallocate an amount space that is larger than the free space in the cluster. It has behaved this way since the initial commit ad7a60de882a ("ceph: punch hole support"). Since there's no easy solution to fix this at the moment, this patch simply removes support for all fallocate operations but FALLOC_FL_PUNCH_HOLE (which implies FALLOC_FL_KEEP_SIZE). Link: https://tracker.ceph.com/issues/36317 Signed-off-by: Luis Henriques <lhenriques@suse.com> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | ceph: refactor ceph_sync_read()Yan, Zheng2018-10-221-113/+106
| | | | | | | | | | | | | | | | | | | | | | Avoid allocating memory for the entire user request: striped_read() does a synchronous OSD request per object, so it doesn't need more than object size worth of pages at a time. [ Preserve the comment, changelog. ] Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | ceph: check if LOOKUPNAME request was aborted when filling traceYan, Zheng2018-10-221-1/+3
| | | | | | | | | | | | | | | | | | d_lookup()/d_alloc() require parent inode locked. Parent inode is not locked if request is aborted. Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | ceph: fix dentry leak in ceph_readdir_prepopulateYan, Zheng2018-10-221-1/+0
| | | | | | | | | | | | Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | Revert "ceph: fix dentry leak in splice_dentry()"Yan, Zheng2018-10-221-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 8b8f53af1ed9df88a4c0fbfdf3db58f62060edf3. splice_dentry() is used by three places. For two places, req->r_dentry is passed to splice_dentry(). In the case of error, req->r_dentry does not get updated. So splice_dentry() should not drop reference. Cc: stable@vger.kernel.org # 4.18+ Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | ceph: check snap first in ceph_set_acl()Chengguang Xu2018-10-221-5/+5
| | | | | | | | | | | | | | | | | | Do the snap check first in ceph_set_acl(), so we can avoid unnecessary operations when the inode has snap. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* | ceph: reset cap hold timeout only for requeued inodeChengguang Xu2018-10-221-1/+1
|/ | | | | | | | | | __cap_delay_requeue() only requeue inode which does not have CEPH_I_FLUSH flag, so avoid reset cap hold timeout for that inode. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* ceph: avoid a use-after-free in ceph_destroy_options()Ilya Dryomov2018-09-061-5/+11
| | | | | | | | | | | syzbot reported a use-after-free in ceph_destroy_options(), called from ceph_mount(). The problem was that create_fs_client() consumed the opt pointer on some errors, but not on all of them. Make sure it always consumes both libceph and ceph options. Reported-by: syzbot+8ab6f1042021b4eed062@syzkaller.appspotmail.com Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
* Merge tag 'ceph-for-4.19-rc1' of git://github.com/ceph/ceph-clientLinus Torvalds2018-08-2114-230/+302
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ceph updates from Ilya Dryomov: "The main things are support for cephx v2 authentication protocol and basic support for rbd images within namespaces (myself). Also included are y2038 conversion patches from Arnd, a pile of miscellaneous fixes from Chengguang and Zheng's feature bit infrastructure for the filesystem" * tag 'ceph-for-4.19-rc1' of git://github.com/ceph/ceph-client: (40 commits) ceph: don't drop message if it contains more data than expected ceph: support cephfs' own feature bits crush: fix using plain integer as NULL warning libceph: remove unnecessary non NULL check for request_key ceph: refactor error handling code in ceph_reserve_caps() ceph: refactor ceph_unreserve_caps() ceph: change to void return type for __do_request() ceph: compare fsc->max_file_size and inode->i_size for max file size limit ceph: add additional size check in ceph_setattr() ceph: add additional offset check in ceph_write_iter() ceph: add additional range check in ceph_fallocate() ceph: add new field max_file_size in ceph_fs_client libceph: weaken sizeof check in ceph_x_verify_authorizer_reply() libceph: check authorizer reply/challenge length before reading libceph: implement CEPHX_V2 calculation mode libceph: add authorizer challenge libceph: factor out encrypt_authorizer() libceph: factor out __ceph_x_decrypt() libceph: factor out __prepare_write_connect() libceph: store ceph_auth_handshake pointer in ceph_connection ...
| * ceph: don't drop message if it contains more data than expectedYan, Zheng2018-08-132-4/+4
| | | | | | | | | | | | | | Later version mds may encode more data into messages. Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| * ceph: support cephfs' own feature bitsYan, Zheng2018-08-132-9/+51
| | | | | | | | | | Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| * ceph: refactor error handling code in ceph_reserve_caps()Chengguang Xu2018-08-131-33/+13
| | | | | | | | | | | | | | | | Call new 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>
| * ceph: refactor ceph_unreserve_caps()Chengguang Xu2018-08-132-31/+37
| | | | | | | | | | | | | | | | | | | | 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>
| * ceph: change to void return type for __do_request()Chengguang Xu2018-08-131-6/+5
| | | | | | | | | | | | | | | | | | 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>
| * ceph: compare fsc->max_file_size and inode->i_size for max file size limitChengguang Xu2018-08-131-1/+2
| | | | | | | | | | | | | | | | | | 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: add additional size check in ceph_setattr()Chengguang Xu2018-08-131-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * ceph: add additional offset check in ceph_write_iter()Chengguang Xu2018-08-021-4/+11
| | | | | | | | | | | | | | | | | | 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>
| * ceph: add additional range check in ceph_fallocate()Chengguang Xu2018-08-021-3/+5
| | | | | | | | | | | | | | | | | | 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>
| * ceph: add new field max_file_size in ceph_fs_clientChengguang Xu2018-08-023-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * libceph: add authorizer challengeIlya Dryomov2018-08-021-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * ceph: adding new return type vm_fault_tSouptick Joarder2018-08-021-30/+32
| | | | | | | | | | | | | | | | | | 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>
| * ceph: use timespec64 for r_stampArnd Bergmann2018-08-023-6/+5
| | | | | | | | | | | | | | | | | | 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>
| * libceph: use timespec64 for r_mtimeArnd Bergmann2018-08-022-11/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * ceph: use timespec64 for inode timestampArnd Bergmann2018-08-028-74/+71
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
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