POSIX requires that set-uid and set-gid bits to be removed when an
unprivileged user writes to a file and ZFS does that during normal
operation.
The problem arrises when the write is stored in the ZIL and replayed.
During replay we have no access to original credentials of the process
doing the write, so zfs_write() will be performed with the root
credentials. When root is doing the write set-uid and set-gid bits
are not removed from the file.
To correct that, log a separate TX_SETATTR entry that removed those bits
on first write to such file.
Idea from: Christian Schwarz
Add test for ZIL replay of setuid/setgid clearing.
Improve various edge cases when clearing setid bits:
- The setid bits can be readded during a single write, so make sure to check
for them on every chunk write.
- Log TX_SETATTR record at most once per transaction group (if the setid bits
are keep coming back).
- Move zfs_log_setattr() outside of zp->z_acl_lock.
Reviewed-by: Dan McDonald <danmcd@joyent.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Co-authored-by: Christian Schwarz <me@cschwarz.com>
Signed-off-by: Pawel Jakub Dawidek <pawel@dawidek.net>
Closes#13027
`configure` now accepts `--enable-asan` and `--enable-ubsan` switches
which results in passing `-fsanitize=address`
and `-fsanitize=undefined`, respectively, to the compiler. Those
flags are enabled in GitHub workflows for ZTS and zloop. Errors
reported by both instrumentations are corrected, except for:
- Memory leak reporting is (temporarily) suppressed. The cost of
fixing them is relatively high compared to the gains.
- Checksum computing functions in `module/zcommon/zfs_fletcher*`
have UBSan errors suppressed. It is completely impractical
to enforce 64-byte payload alignment there due to performance
impact.
- There's no ASan heap poisoning in `module/zstd/lib/zstd.c`. A custom
memory allocator is used there rendering that measure
unfeasible.
- Memory leaks detection has to be suppressed for `cmd/zvol_id`.
`zvol_id` is run by udev with the help of `ptrace(2)`. Tracing is
incompatible with memory leaks detection.
Reviewed-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: szubersk <szuberskidamian@gmail.com>
Closes#12928
This was discovered when using Discords Slack compatible webhook.
Slack webhooks works without the escape, however Discord rightly refuses
the POST as it contains invalid JSON.
https://discord.com/developers/docs/resources/webhook#execute-slackcompatible-webhook
Valid (while escaping the newline:
```
+ msg_json='{"text": "*ZFS scrub_finish error for test on quartz*\nZFS has detected a data error:\n\n eid: 124\n class: scrub_finish\n host: quartz\n time: \n error: \n objid: :\n pool: test\n"}'
```
Invalid (no escape):
```
+ msg_json='{"text": "*ZFS scrub_finish error for test on quartz*
ZFS has detected a data error:\n\n eid: 124\n class: scrub_finish\n host: quartz\n time: \n error: \n objid: :\n pool: test\n"}'
```
The new line gets rendered and not sent inside the JSON as intended.
```
++ curl -X POST https://discord.com/api/webhooks/{webhook.id}/{webhook.token}/slack --header 'Content-Type: application/json' --data-binary '{"text": "*ZFS scrub_finish error for test on quartz*
ZFS has detected a data error:\n\n eid: 124\n class: scrub_finish\n host: quartz\n time: \n error: \n objid: :\n pool: test\n"}'
+ msg_out='{"message": "Cannot send an empty message", "code": 50006}'
```
Test method:
`root@quartz:/etc/zfs/zed.d# export ZED_ZEDLET_DIR=/etc/zfs/zed.d; export ZEVENT_EID=124; export ZEVENT_SUBCLASS=scrub_finish; export ZEVENT_POOL=test; export ZED_NOTIFY_DATA=1; bash -x ./data-notify.sh`
Reviewed-by: Damian Szuberski <szuberskidamian@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Philip Kauffman <philip@kauffman.me>
Closes#13049
This commit adds enumerated names to disambiguate between the
different vdevs. Previously only 'zpool status' showed enumerated
vdev names, now 'zpool list -v' and 'zpool iostat -v' also shows
the enumerated vdev names.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Dipak Ghosh <dipak.ghosh@hpe.com>
Signed-off-by: Akash B <akash-b@hpe.com>
Closes#12510Closes#13031
In files created/modified before 4254acb there may be a corruption of
xattrs which is not reported during scrub and normal send/receive. It
manifests only as an error when raw sending/receiving. This happens
because currently only the raw receive path checks for discrepancies
between the dnode bonus length and the spill pointer flag.
In case we encounter a dnode whose bonus length is greater than the
predicted one, we should report an error. Modify in this regard
dnode_sync() with an assertion at the end, dump_dnode() to error out,
dsl_scan_recurse() to report errors during a scrub, and zstream to
report a warning when dumping. Also added a test to verify spill blocks
are sent correctly in a raw send.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: George Amanakis <gamanakis@gmail.com>
Closes#12720Closes#13014
Currently, we seem to only care if the results collector errors.
We also should care if the test-runner died.
Authored-by: Rich Ercolani <rincebrain@gmail.com>
Co-authored-by: Rich Ercolani <rincebrain@gmail.com>
Reviewed-by: Damian Szuberski <szuberskidamian@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes#12998
Improve the readability of zfs_send_resume_impl by moving resume nvl
decoding into a separate helper function.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes#12967
Factor out get_bookmarks, find_redact_pair, and get_redact_complete
helper functions to improve the readability of find_redact_book.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes#12967
* Capitalize and punctuate complete sentences.
* Add a blank line between functions.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes#12967
* Add a high level comment.
* Eliminate unnecessarily void arg.
* Capitalize and punctuate complete sentences in comments.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes#12967
* Add a high level comment.
* Avoid unnecessary line wrapping.
* Simplify size accounting logic.
* Eliminate unnecessary buffer on the stack.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes#12967
This makes the header print before the sleep as well, which is fine.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes#12967
In zfs_send_progress, initialize \*bytes_written and \*blocks_visited
in case we have to return early due to ioctl failure.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes#12967
* Don't bother building a debug nvlist if we can't return it.
* Save errno after ioctl failure in case snprintf clobbers it.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes#12967
* Capitalize and punctuate complete sentences in comments.
* Separate out a group of locals to add a comment on their purpose.
* Remove unnecessary line wrapping.
* Make it clear that dds_origin is a string by using explicit character
comparison to check for an empty string, rather than implictly
treating it as a boolean.
* Reorganize manipulation of props and holds nvlists to improve
clarity.
* There's no need to initialize the snapname buffer with zeros, we're
immediately overwriting it.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes#12967
* Add a high level comment.
* Move locals closer to point of use.
* Use fnv* routines rather than explicit verification of success.
* Factor out duplicated code by introducing isspacelimit to clarify
behavior.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes#12967
* Add a high level comment.
* Use local variables to reduce line wrapping.
* Remove extra braces and insert space for clarity.
* Assert precondition that the dataset name contains '@' for sanity.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes#12967
There is no need to allocate a holds nvlist. lzc_get_holds does that
for us.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes#12967
avl_add does avl_find internally, then avl_insert. We're already doing
the avl_find, so using avl_insert directly avoids repeating the search.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes#12967
De-clutter the clode and make it clear the guid is only used here.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes#12967
We won't be passing a negative value here, so make it clear.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes#12967
The cast will explode on 32-bit big-endian architectures
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes#12968
This checking breaks KMSAN since it effectively loads from uninitialized
memory to see if the lock is already initialized. This happens in
dnode_cons() for example. This checking is not very useful, partly due
to UMA's memory trashing, and is already disabled for mutexes. Make
mutexes and rwlocks consistent: remove double-initialization checking
for rwlocks, and pass SX_NEW to disable the same checking in
lock_init().
No functional change intended, this affects only debug builds.
As a side note, kmem cache constructors/destructors are implemented
suboptimally on FreeBSD. FreeBSD's slab allocator, UMA, supports two
pairs of constructors/destructors: ctor/dtor and init/fini. The former
are called upon every allocation and free of an item, while the latter
are called when an item is imported or released from a zone,
respectively. That is, when a slab is allocated to a particular cache,
it is subdivided into items, and init is called on each. fini is called
when the slab is being prepared to be freed back to the system. The
intent is for them to initialize static fields such as locks, which
do not need to be initialized upon each allocation of an item.
In illumos, kmem_cache constructors/destructors correspond to UMA's
init/fini callbacks. However, in the SPL they are implemented as UMA
ctor/dtors, meaning that they get called far more often than necessary.
This may be difficult to fix, since new code may assume the kmem cache
ctor/dtors are in fact called upon each allocation/free, and there
doesn't seem to be a clear way to implement the intended semantics on
Linux.
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Mark Johnston <markj@FreeBSD.org>
Closes#13019
69 CSTYLED BEGINs remain, appx. 30 of which can be removed if cstyle(1)
had a useful policy regarding
CALL(ARG1,
ARG2,
ARG3);
above 2 lines. As it stands, it spits out *both*
sysctl_os.c: 385: continuation line should be indented by 4 spaces
sysctl_os.c: 385: indent by spaces instead of tabs
which is very cool
Another >10 could be fixed by removing "ulong" &al. handling.
I don't foresee anyone actually using it intentionally
(does it even exist in modern headers? why did it in the first place?).
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes#12993
It hosts only asm_linkage.h, which is entirely unused,
and has slightly diverged from the one that's actually used
(module/icp/include/sys/ia32/asm_linkage.h)
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes#12993
First open locking changes were correctly applied to zvol_geom_open but
incorrectly applied to zvol_cdev_open, causing spa_namespace_lock to be
held indefinitely.
Make the first open locking in zvol_cdev_open match zvol_geom_open.
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes#13016
When the optional PAM binaries are included in a build, ./configure will
look for security/pam_modules.h and - if it doesn't find it - recommend
the user install `libpam0g-dev`. On Red Hat systems, `pam-devel` is the
package that supplies this requirement; `libpam0g-dev` does not exist.
By encoding this requirement in the spec file, we give packagers more
appropriate (and timely) recommendations for completing the build.
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Chris Lindee <chris.lindee+github@gmail.com>
Closes#13001
When using the two argument version of submit_bio() in kernel's prior
to 4.8 the first argument should be specified. It's used by block
dump to report the bio direction.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Finix Yan <yancw@info2soft.com>
Closes#13006
