ping(8) uses SO_TIMESTAMP, which attaches a timestamp to each IP datagram at
the time it's received by the kernel. Except that occasionally it doesn't.
Add a check to see whether such a timestamp was actually set before trying
to read it. This fixes segfaults that can happen when the kernel doesn't
attach a timestamp.
The bug has always existed, but prior to r351461 it manifested as an
implausible round-trip-time, not a segfault.
Reported by: pho
MFC after: 3 days
MFC-With: 351461
':'. It's slightly wasteful, but much easier (and the savings in bytes
at runtime would be tiny, but the code to do it larger).
Submitted by: Sebastian Huber
This command simply returns 0 at the moment and explicitly takes no
arguments. This should be used by utilities wanting to see if bectl can
operate on the system they're running, or with a specific root (`bectl -r`).
It may grow more checks than "will libbe successfully init" in the future,
but for now this is enough as that checks for the dataset mounted at "/" and
that it looks capable of being a BE root (e.g. it's not a top-level dataset)
bectl commands can now specify if they want to be silent, and this will turn
off libbe_print_on_error so they can control the output as needed. This is
already used in `bectl check`, and may be turned on in the future for some
other commands where libbe errors are better suppressed as the failure mode
may be obvious.
Requested by: David Fullard
MFC after: 3 days
Previously without -m parameter it worked mostly by concodence.
While there, make page/subpage values validation more strict.
MFC after: 5 days
Sponsored by: iXsystems, Inc.
This turns into a warning in GCC 4.2 that 'reverse' may be used
uninitialized in this function. While I don't immediately see where it's
deciding this from (there's only two paths that make column != NULL, and
they both set reverse), initializing reverse earlier is good for clarity.
MFC after: 3 days
- Remove incomplete and dangerous ata_res decoding from ata_do_cmd().
Instead switch all functions that need the result to use get_ata_status(),
doing the same, but more careful, also reducing code duplication.
- Made get_ata_status() to also decode fixed format sense. In many cases
it is still not enough to make it useful, since it can only report results
of 28-bit command, but it is slightly better then nothing.
- Organize error reporting in ata_do_cmd(), so that if caller specified
AP_FLAG_CHK_COND, it is responsible for command errors (non-ioctl ones).
- Make HPA/AMA errors not fatal for `identify` subcommand.
- Fix reprobe() not being called on HPA/AMA when in quiet mode.
- Remove not very useful messages from `format` and `sanitize` commands
with -y flag. Once they started, they often can't be stopped any way.
MFC after: 5 days
Sponsored by: iXsystems, Inc.
Error there mean that command was not even executed, and all information
we have about it is errno, and cam_error_print() call is not very useful.
Plus it is most likely a programmatic error, that shoud not happen.
MFC after: 1 week
Sponsored by: iXsystems, Inc.
This is a rework of r344701, that noticed that number of bytes passes to
8 bit sector count field gets truncated. First decision was to not pass
anything, since ATA specs define the field as N/A. But it appeared to be a
problem for some SAT devices, that require information about data transfer
to operate properly. Some additional investigation shown that it is quite
a common practice to set unused fields of ATA commands (fortunately ATA
specs formally allow it) to supply the information to SAT layer. I have
found SAS-SATA interposer that does not allow pass-through without it.
As side effect, reduce code duplication by removing ata_do_28bit_cmd()
function, replacing it with more universal ata_do_cmd().
MFC after: 1 week
Sponsored by: iXsystems, Inc.
The default package use to be FreeBSD-runtime but it should only contain
binaries and libs enough to boot to single user and repair the system, it
is also very handy to have a package that can be tranform to a small mfsroot.
So create a new package named FreeBSD-utilities and make it the default one.
Also move a few binaries and lib into this package when it make sense.
Reviewed by: bapt, gjb
Differential Revision: https://reviews.freebsd.org/D21506
It doesn't need to be in runtime and might help people who want to
experiment with other rc system or don't use one (like in small
embedded mfsroot).
Reviewed by: bapt, gjb
Differential Revision: https://reviews.freebsd.org/D21499
The Host Buffer feature (NVMe 1.4 section 89) allows for the NVMe card
request the host provide it buffer for lookaside tables and maybe
other things. Report the card's minimum and preferred sizes with
nvmecontrol/camcontrol identify.
Allow 'bectl list' to sort output by a given property name. The property
name is passed in using a command-line flag, '-c' for ascending order and
'-C' for descending order. The properties allowed to sort by are:
- name (the default output, even if '-c' or '-C' are not used)
- creation
- origin
- used
- usedds
- usedsnap
- usedrefreserv
The default output for 'bectl list' is now ascending alphabetical order of
BE name.
To sort by creation time from earliest to latest, the command would be
'bectl list -c creation'
Submitted by: Rob Fairbanks <rob.fx907 gmail com>
Reviewed by: ler
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D20818
KTLS adds support for in-kernel framing and encryption of Transport
Layer Security (1.0-1.2) data on TCP sockets. KTLS only supports
offload of TLS for transmitted data. Key negotation must still be
performed in userland. Once completed, transmit session keys for a
connection are provided to the kernel via a new TCP_TXTLS_ENABLE
socket option. All subsequent data transmitted on the socket is
placed into TLS frames and encrypted using the supplied keys.
Any data written to a KTLS-enabled socket via write(2), aio_write(2),
or sendfile(2) is assumed to be application data and is encoded in TLS
frames with an application data type. Individual records can be sent
with a custom type (e.g. handshake messages) via sendmsg(2) with a new
control message (TLS_SET_RECORD_TYPE) specifying the record type.
At present, rekeying is not supported though the in-kernel framework
should support rekeying.
KTLS makes use of the recently added unmapped mbufs to store TLS
frames in the socket buffer. Each TLS frame is described by a single
ext_pgs mbuf. The ext_pgs structure contains the header of the TLS
record (and trailer for encrypted records) as well as references to
the associated TLS session.
KTLS supports two primary methods of encrypting TLS frames: software
TLS and ifnet TLS.
Software TLS marks mbufs holding socket data as not ready via
M_NOTREADY similar to sendfile(2) when TLS framing information is
added to an unmapped mbuf in ktls_frame(). ktls_enqueue() is then
called to schedule TLS frames for encryption. In the case of
sendfile_iodone() calls ktls_enqueue() instead of pru_ready() leaving
the mbufs marked M_NOTREADY until encryption is completed. For other
writes (vn_sendfile when pages are available, write(2), etc.), the
PRUS_NOTREADY is set when invoking pru_send() along with invoking
ktls_enqueue().
A pool of worker threads (the "KTLS" kernel process) encrypts TLS
frames queued via ktls_enqueue(). Each TLS frame is temporarily
mapped using the direct map and passed to a software encryption
backend to perform the actual encryption.
(Note: The use of PHYS_TO_DMAP could be replaced with sf_bufs if
someone wished to make this work on architectures without a direct
map.)
KTLS supports pluggable software encryption backends. Internally,
Netflix uses proprietary pure-software backends. This commit includes
a simple backend in a new ktls_ocf.ko module that uses the kernel's
OpenCrypto framework to provide AES-GCM encryption of TLS frames. As
a result, software TLS is now a bit of a misnomer as it can make use
of hardware crypto accelerators.
Once software encryption has finished, the TLS frame mbufs are marked
ready via pru_ready(). At this point, the encrypted data appears as
regular payload to the TCP stack stored in unmapped mbufs.
ifnet TLS permits a NIC to offload the TLS encryption and TCP
segmentation. In this mode, a new send tag type (IF_SND_TAG_TYPE_TLS)
is allocated on the interface a socket is routed over and associated
with a TLS session. TLS records for a TLS session using ifnet TLS are
not marked M_NOTREADY but are passed down the stack unencrypted. The
ip_output_send() and ip6_output_send() helper functions that apply
send tags to outbound IP packets verify that the send tag of the TLS
record matches the outbound interface. If so, the packet is tagged
with the TLS send tag and sent to the interface. The NIC device
driver must recognize packets with the TLS send tag and schedule them
for TLS encryption and TCP segmentation. If the the outbound
interface does not match the interface in the TLS send tag, the packet
is dropped. In addition, a task is scheduled to refresh the TLS send
tag for the TLS session. If a new TLS send tag cannot be allocated,
the connection is dropped. If a new TLS send tag is allocated,
however, subsequent packets will be tagged with the correct TLS send
tag. (This latter case has been tested by configuring both ports of a
Chelsio T6 in a lagg and failing over from one port to another. As
the connections migrated to the new port, new TLS send tags were
allocated for the new port and connections resumed without being
dropped.)
ifnet TLS can be enabled and disabled on supported network interfaces
via new '[-]txtls[46]' options to ifconfig(8). ifnet TLS is supported
across both vlan devices and lagg interfaces using failover, lacp with
flowid enabled, or lacp with flowid enabled.
Applications may request the current KTLS mode of a connection via a
new TCP_TXTLS_MODE socket option. They can also use this socket
option to toggle between software and ifnet TLS modes.
In addition, a testing tool is available in tools/tools/switch_tls.
This is modeled on tcpdrop and uses similar syntax. However, instead
of dropping connections, -s is used to force KTLS connections to
switch to software TLS and -i is used to switch to ifnet TLS.
Various sysctls and counters are available under the kern.ipc.tls
sysctl node. The kern.ipc.tls.enable node must be set to true to
enable KTLS (it is off by default). The use of unmapped mbufs must
also be enabled via kern.ipc.mb_use_ext_pgs to enable KTLS.
KTLS is enabled via the KERN_TLS kernel option.
This patch is the culmination of years of work by several folks
including Scott Long and Randall Stewart for the original design and
implementation; Drew Gallatin for several optimizations including the
use of ext_pgs mbufs, the M_NOTREADY mechanism for TLS records
awaiting software encryption, and pluggable software crypto backends;
and John Baldwin for modifications to support hardware TLS offload.
Reviewed by: gallatin, hselasky, rrs
Obtained from: Netflix
Sponsored by: Netflix, Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D21277
The following checks are now being enforced:
- bpbBytesPerSec: only accept 512, 1024, 2048 and 4096.
- bpbSecPerClust: only accept 1, 2, 4, 8, 16, 32, 64 and 128.
- bpbResSectors: require non-zero.
- bpbFATs: require non-zero.
- bpbSectors: require zero for FAT32.
- bpbFATsmall: require zero for FAT32.
- bpbHugeSectors: require non-zero for FAT32.
Bail out if the BPB contained values that do not meet these requirements.
We also require FATsecs * FATsecs to not overflow 32-bit unsigned
integer.
Check for backup boot block was removed because the checker does not take
corrective action, and msdosfs driver ignores it too.
Use CMSG_FIRSTHDR rather than assume that an array is correctly aligned.
Fixes warnings on sparc64 and powerpcspe.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFH: 2 weeks
Sponsored by: Google LLC (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21406
This fixes -Wcast-align errors when compiled with WARNS=6.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC after: 2 weeks
Sponsored by: Google LLC (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21327
Now equivalent options have the same flags, and nonequivalent options have
different flags. This is a prelude to merging the two commands.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC: Never
Sponsored by: Google LLC (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21345
ping's default is now not to attempt reverse DNS lookups. The -H flag will
enable them. This change is not quite a reversion of r351330. That change
made the happy path and error path do reverse lookups consistently; this
change changes the default for both paths.
Submitted by: Ján Sučan <sucanjan@gmail.com>
Discussed with: cem
MFC after: 2 weeks
MFC-With: 351330
Sponsored by: Google LLC (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21364
FSI_Nxt_Free instead of providing a wrong value.
With this change, fsck_msdosfs would no longer complain about invalid
FSInfo information.
MFC after: 2 weeks
This is the reverse of the -n flag.
Submitted by: Ján Sučan <sucanjan@gmail.com>
Sponsored by: Google LLC (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21356
When printing replies, ping will now attempt a reverse DNS lookup of the
target. That can be suppressed by using the "-n" option. Curiously, ping
has always done reverse lookups in certain error paths, but never in the
success path.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC after: 2 weeks
Sponsored by: Google LLC (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21351
Increase buffer size for the string representation of n_time
ICMP timestamp is a 32-bit number. In pr_ntime(), number of minutes
and seconds is always 2 characters wide. Max. number of hours is 4
characters wide. The buffer size should be at least:
4 + 2 + 2 + 1 (':') + 1 (':') + 1 ('\0') = 11
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC after: 2 weeks
Sponsored by: Google, inc. (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21325
Some socket options require root privileges to set. The old code did indeed
drop privileges at the earliest opportunity.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC after: Never
Sponsored by: Google, Inc. (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21319
This is a preparation step for adding ATF tests of in_cksum(), which has been
modified to operate on unaligned data. ping.o cannot be linked to the test
executable because both of them contain 'main' symbol.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC after: 2 weeks
Sponsored by: Google, inc. (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21288
Revision 350859 removed level of indirection that was needed for setting the
caller's `cp' pointer. dnsdecode() uses return value to indicate error or
success. It returns pointer to a buffer holding a decompressed DNS name or
NULL. The caller uses that value only to find out the result, not for accessing
the buffer.
We use the return value to propagate the new value of `cp' pointer to
the caller instead of using an output argument.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC after: 2 weeks
MFC-With: 350859
Sponsored by: Google, Inc (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21266
This fixes -Wcast-align errors when compiled with WARNS=6.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC after: 2 weeks
Sponsored by: Google, inc. (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21217
The old code worked, but wasted some stack space.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC after: 2 weeks
Sponsored by: Google, inc. (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21275
GCC isn't smart enough to realize that this variable was always initialized.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC after: 2 weeks
Sponsored by: Google, inc. (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21271
GCC 4.2 isn't smart enough to know that this variable is already defined by
the time it's used.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC after: 2 weeks
Sponsored by: Google, inc. (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21269
expression howmany(BBSIZE, PAGE_SIZE), where BBSIZE is the size of the
boot block area. That can be less than 2 if PAGE_SIZE is big.
swapon(8) has an option to trim (delete) all the blocks of a device at
startup. However, if the first of those blocks is a bsd label, then
trimming those blocks is destructive. Change swapon to leave the
first BBSIZE bytes untrimmed.
Update manual pages to reflect changes in how swapon and how it may be
used, espeically in association with savecore.
Reviewed by: alc
Approved by: markj (mentor)
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D21191
This fixes -Wcast-align errors for in_cksum() calls when compiled with
WARNS=6.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC after: 2 weeks
Sponsored by: Google, inc. (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21261
That revision changed the internal clock to the monotonic, but neglected to
change the datagram's timestamp source.
Reported by: Oliver Hartmann, Michael Butler
Reviewed by: Ján Sučan <sucanjan@gmail.com>, allanjude
MFC after: 2 weeks
MFC-With: r350998
Differential Revision: https://reviews.freebsd.org/D21258
Follow-up on r322318 and r322319 and remove the deprecated modules.
Shift some now-unused kernel files into userspace utilities that incorporate
them. Remove references to removed GEOM classes in userspace utilities.
Reviewed by: imp (earlier version)
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D21249
Though ntohs and htons are functionally identical, they have different meanings.Using the correct one helps to document the code.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC after: 2 weeks
Sponsored by: Google, inc. (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21219
The `sp' pointer doesn't need to be modified in the caller of
dnsdecode().
This fixes -Wcast-qual error (`must have all intermediate pointers
const qualified to be safe') when compiled with WARNS=6.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC after: 2 weeks
Sponsored by: Google, inc. (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21215
This fixes -Wmissing-variable-declarations error when compiled with
WARNS=6.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC after: 2 weeks
Sponsored by: Google, inc. (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21214
It can be done just after the sockets have been created.
Submitted by: Ján Sučan <sucanjan@gmail.com>
MFC after: 2 weeks
Sponsored by: Google, inc. (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21213
Make a note in the newfs.8 manual page to update the first backup
superblock location when changing the default fragment size for
the filesystem.
Reported by: O. Hartmann
It allows to read and write block descriptors alike to mode page parameters.
It allows to change block size or short-stroke HDDs or overprovision SSDs.
Depenting on -P parameter the change can be either persistent or till reset.
In case of block size change device may need reformat after the setting.
In case of SSD overprovisioning format or sanitize may be needed to really
free the flash.
During implementation appeared that csio_encode_visit() can not handle
integers of more then 4 bytes, that makes 8-byte LBA handling awkward.
I had to split it into two 4-byte halves now.
MFC after: 1 week
Relnotes: yes
Sponsored by: iXsystems, Inc.
This commit imports the new fusefs driver. It raises the protocol level
from 7.8 to 7.23, fixes many bugs, adds a test suite for the driver, and
adds many new features. New features include:
* Optional kernel-side permissions checks (-o default_permissions)
* Implement VOP_MKNOD, VOP_BMAP, and VOP_ADVLOCK
* Allow interrupting FUSE operations
* Support named pipes and unix-domain sockets in fusefs file systems
* Forward UTIME_NOW during utimensat(2) to the daemon
* kqueue support for /dev/fuse
* Allow updating mounts with "mount -u"
* Allow exporting fusefs file systems over NFS
* Server-initiated invalidation of the name cache or data cache
* Respect RLIMIT_FSIZE
* Try to support servers as old as protocol 7.4
Performance enhancements include:
* Implement FUSE's FOPEN_KEEP_CACHE and FUSE_ASYNC_READ flags
* Cache file attributes
* Cache lookup entries, both positive and negative
* Server-selectable cache modes: writethrough, writeback, or uncached
* Write clustering
* Readahead
* Use counter(9) for statistical reporting
PR: 199934 216391 233783 234581 235773 235774 235775
PR: 236226 236231 236236 236291 236329 236381 236405
PR: 236327 236466 236472 236473 236474 236530 236557
PR: 236560 236844 237052 237181 237588 238565
Reviewed by: bcr (man pages)
Reviewed by: cem, ngie, rpokala, glebius, kib, bde, emaste (post-commit
review on project branch)
MFC after: 3 weeks
Relnotes: yes
Sponsored by: The FreeBSD Foundation
Pull Request: https://reviews.freebsd.org/D21110
I merged passthru.c from the wrong branch (it was a branch that went further in
a direction I wound up not taking). Fix the mismerge and turn passthru on.
NVMe reservations are quite alike to SCSI persistent reservations and
can be used in clustered setups with shared multiport storage.
MFC after: 10 days
Relnotes: yes
Sponsored by: iXsystems, Inc.
r348215 changed jail_getid(3) to validate passed-in jids as active jails
(as the function is documented to return -1 if the jail does not exist).
This broke the jail option (in some cases?) as the jail historically hasn't
needed to exist at the time of rule parsing; jids will get stored and later
applied.
Fix this caller to attempt to parse *av as a number first and just use it
as-is to match historical behavior. jail_getid(3) must still be used in
order for name arguments to work, but it's strictly a fallback in case we
weren't given a number.
Reported and tested by: Ari Suutari <ari stonepile fi>
Reviewed by: ae
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D21128
It allows to delete all user data from NVM subsystem in one of 3 methods.
It is a close equivalent of SCSI SANITIZE command of `camcontrol sanitize`,
so I tried to keep arguments as close as possible.
While there, fix supported sanitize methods reporting in `identify`.
MFC after: 2 weeks
Relnotes: yes
Sponsored by: iXsystems, Inc.
Add capsicum support to ping6, mostly copying the strategy used for ping.
Submitted by: Ján Sučan <jansucan@gmail.com>
Reviewed by: markj
MFC after: 2 weeks
Sponsored by: Google, inc. (Google Summer of Code 2019)
Differential Revision: https://reviews.freebsd.org/D21050
In particular: Changed Namespace List, Commands Supported and Effects,
Reservation Notification, Sanitize Status.
Add few new arguments to `nvmecontrol log` subcommand.
MFC after: 2 weeks
Sponsored by: iXsystems, Inc.
While very useful by itself, it also makes `nvmecontrol` not depend on
hardcoded device names parsing, that in its turn makes simple to take
nvdX (and potentially any other) device names as arguments.
Also added IOCTL bypass from nvdX to respective nvmeYnsZ makes them
interchangeable for management purposes.
MFC after: 2 weeks
Sponsored by: iXsystems, Inc.
This adds several previously missed but important subcommands to list
namespaces and controllers. It also fixes few previously added but
just found with real testing to be broken subcommands.
Also while there, add possibility to explicitly specify nsid for
`nvmecontrol identify` subcommand. It may be useful to specify nsids
not having own devices, for example 0xffffffff, or just newly created
ones.
MFC after: 2 weeks
Relnotes: yes
Sponsored by: iXsystems, Inc.
While old devices may not support 10 byte MODE SENSE/MODE SELECT commands,
new ones may not be able to report all mode pages with 6 byte commands.
This patch makes camcontrol by default start with 10 byte commands and
fall back to 6 byte on ILLEGAL REQUEST error, or 6 byte can be forced.
MFC after: 2 weeks
Sponsored by: iXsystems, Inc.
ATA sanitize is functionally identical to SCSI, just uses different
initiation commands and status reporting mechanism.
While there, make kernel better handle sanitize commands and statuses.
MFC after: 2 weeks
Sponsored by: iXsystems, Inc.
This option was imported as part of the KAME project in r62627 (in 2000).
It was turned on unconditionally in r121472 (in 2003) and has been on ever
since. The old alternative code has bitrotted. Reap the dead code.
Reported by: Ján Sučan <jansucan@gmail.com>
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D20938
This makes `camcontrol debug` also allow peripheral device specification.
While there, make BTL parser more strict and switch from strtok() to
strsep().
MFC after: 2 weeks
having their check hashes recomputed which resulted in spurious inode
check-hash errors when the system came back up after a crash.
Reported by: Alan Somers
Sponsored by: Netflix
trimming so that a geli device isn't detached before swapon is
invoked.
Submitted by: sigsys_gmail.com
Discussed with: alc
Approved by: markj (mentor)
Differential Revision: https://reviews.freebsd.org/D21006
AMA replaced HPA in ACS-3 specification. It allows to limit size of the
disk alike to HPA, but declares inaccessible data as indeterminate. One
of its practical use cases is to under-provision SATA SSDs for better
reliability and performance.
While there, fix HPA Security detection/reporting.
MFC after: 2 weeks
Relnotes: yes
Sponsored by: iXsystems, Inc.
FUSE file systems can optionally support interrupting outstanding
operations. However, the file system does not identify to the kernel at
mount time whether it's capable of doing that. Instead it signals its
noncapability by returning ENOSYS to the first FUSE_INTERRUPT operation it
receives. That's a problem for reliable signal delivery, because the kernel
must choose which thread should get a signal before it knows whether the
FUSE server can handle interrupts. The problem is even worse because the
FUSE protocol allows a file system to simply ignore all FUSE_INTERRUPT
operations.
Fix the signal delivery logic by making interruptibility an opt-in mount
option. This will require a corresponding change to libfuse, but not to
most file systems that link to libfuse.
Bump __FreeBSD_version due to the new mount option.
Sponsored by: The FreeBSD Foundation
These are mostly compatible with Linux, with three exceptions.
1. We don't do metadata segment stuff. Our passthrough interface
doesn't cope. The code is there, but generates an error.
2. Linux lets you specify a namespace ID for the command. We current
do not: we get ours from the namespace device, or pass in a generic
one. Generally, this will lead to the same command, but FreeBSD's
is safer since you can't specify the wrong id.
3. --show-command outputs to stderr instead of stdout so you can both
see your command, and capture its output with a simple redirect.
Differential Revision: https://reviews.freebsd.org/D19296
Create a set of routines and structures to hold the data for the args
for a command. Use them to generate help and to parse args. Convert
all the current commands over to the new format. "comnd" is a hat-tip
to the TOPS-20 %COMND JSYS that (very) loosely inspired much of the
subsequent command line notions in the industry, but this is far
simpler (the %COMND man page is longer than this code) and not in the
kernel... Also, it implements today's de-facto
command [verb]+ [opts]* [args]*
format rather than the old, archaic TOPS-20 command format :)
This is a snapshot of a work in progress to get the nvme passthru
stuff committed. In time it will become a private library and used
by some other programs in the tree that conform to the above pattern.
Differential Revision: https://reviews.freebsd.org/D19296
gcc hates dt < CC_DT_NONE since it can never be true when dt is an unsigned
type. Since that's a compiler choice and may be affected by weird stuff, instead
use (unsigned)dt > CC_DT_UNKNOWN to test for bounds error since that will work
regardless of the signedness of dt.
List the device's protocol. The returned value is one of the following:
ata direct attach ATA or SATA device
satl a SATA device attached via SAS
scsi A parallel SCSI or SAS
nvme A direct attached NVMe device
mmcsd A MMC or SD attached device
Reviewed by: scottl@, rpokala@
Differential Revision: https://reviews.freebsd.org/D20950
Most people know SAS attached SATA devices by the name SAT or SATL
(with the latter being a little more common). Change the device type
ATA_BEHIND_SCSI to SATL since it's more specific and meaningful.
Suggested by: scottl@
We remove IPSEC only in parts of the tree, and not others. RELEASE_CRUNCH to
disable it has not kept up with all its uses. Remove it. Should there be a real
need to disable IPSEC, one that hasn't shown up in the base system to date,
it can be re-added behind a WITHOUT_IPSEC build option.
We've not used this in years since we retired sysinstall, and it
hasn't compiled in at least a year. A full camcontrol is only 180k, so
making it smaller is not as important as it once was.
OK'd by: ken@, scottl@
is to notify the kernel that the file system is untrusted and it
should use more extensive checks on the file-system's metadata
before using it. This option is intended to be used when mounting
file systems from untrusted media such as USB memory sticks or other
externally-provided media.
It will initially be used by the UFS/FFS file system, but should
likely be expanded to be used by other file systems that may appear
on external media like msdosfs, exfat, and ext2fs.
Reviewed by: kib
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D20786
Unmapped mbufs allow sendfile to carry multiple pages of data in a
single mbuf, without mapping those pages. It is a requirement for
Netflix's in-kernel TLS, and provides a 5-10% CPU savings on heavy web
serving workloads when used by sendfile, due to effectively
compressing socket buffers by an order of magnitude, and hence
reducing cache misses.
For this new external mbuf buffer type (EXT_PGS), the ext_buf pointer
now points to a struct mbuf_ext_pgs structure instead of a data
buffer. This structure contains an array of physical addresses (this
reduces cache misses compared to an earlier version that stored an
array of vm_page_t pointers). It also stores additional fields needed
for in-kernel TLS such as the TLS header and trailer data that are
currently unused. To more easily detect these mbufs, the M_NOMAP flag
is set in m_flags in addition to M_EXT.
Various functions like m_copydata() have been updated to safely access
packet contents (using uiomove_fromphys()), to make things like BPF
safe.
NIC drivers advertise support for unmapped mbufs on transmit via a new
IFCAP_NOMAP capability. This capability can be toggled via the new
'nomap' and '-nomap' ifconfig(8) commands. For NIC drivers that only
transmit packet contents via DMA and use bus_dma, adding the
capability to if_capabilities and if_capenable should be all that is
required.
If a NIC does not support unmapped mbufs, they are converted to a
chain of mapped mbufs (using sf_bufs to provide the mapping) in
ip_output or ip6_output. If an unmapped mbuf requires software
checksums, it is also converted to a chain of mapped mbufs before
computing the checksum.
Submitted by: gallatin (earlier version)
Reviewed by: gallatin, hselasky, rrs
Discussed with: ae, kp (firewalls)
Relnotes: yes
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D20616
bectl advertises that it has the ability to create recursive and
non-recursive boot environments. This patch implements that functionality
using the be_create_depth API provided by libbe. With this patch, bectl now
works as bectl(8) describes in regards to creating recursive/non-recursive
boot environments.
Submitted by: Rob Fairbanks <rob.fx907 gmail com> (with minor changes)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D20240
PR/238816 initially addressed updates to usage() however the PR has
morphed into a shopping list of updates to usage() and man pages.
PR: 238816 (I added to the list during discussion)
MFC after: 1 week
Otherwise they are leaked, allowing an attacker to trigger memory
exhaustion.
This is options.c rev. 1.70 from OpenBSD.
admbugs: 552
Obtained from: OpenBSD
MFC after: 3 days
A mixture of IP or UDP packets with valid and invalid checksum could
cause {ip,udp}_packets_bad_checksum to wrap around to 0, resulting
in a division by zero.
This is packet.c rev. 1.27 from OpenBSD.
admbugs: 552
Obtained from: OpenBSD
MFC after: 3 days
Also modify it a bit. Now -c option omits only 'from any to any' part
and works for different protocols (not just for ip).
Reported by: Dmitry Selivanov <dseliv at gmail>
MFC after: 1 week
NANDFS has been broken for years. Remove it. The NAND drivers that
remain are for ancient parts that are no longer relevant. They are
polled, have terrible performance and just for ancient arm
hardware. NAND parts have evolved significantly from this early work
and little to none of it would be relevant should someone need to
update to support raw nand. This code has been off by default for
years and has violated the vnode protocol leading to panics since it
was committed.
Numerous posts to arch@ and other locations have found no actual users
for this software.
Relnotes: Yes
No Objection From: arch@
Differential Revision: https://reviews.freebsd.org/D20745
'-E' appears on the swapon command line, or if "trimonce" appears as
an fstab option.
Discussed at: BSDCAN
Tested by: markj
Reviewed by: markj
Approved by: markj (mentor)
Differential Revision:https://reviews.freebsd.org/D20599
With this opcode it is possible to match TCP packets with specified
MSS option, whose value corresponds to configured in opcode value.
It is allowed to specify single value, range of values, or array of
specific values or ranges. E.g.
# ipfw add deny log tcp from any to any tcpmss 0-500
Reviewed by: melifaro,bcr
Obtained from: Yandex LLC
MFC after: 1 week
Sponsored by: Yandex LLC
Enable write clustering in fusefs whenever cache mode is set to writeback
and the "async" mount option is used. With default values for MAXPHYS,
DFLTPHYS, and the fuse max_write mount parameter, that means sequential
writes will now be written 128KB at a time instead of 64KB.
Also, add a regression test for PR 238565, a panic during unmount that
probably affects UFS, ext2, and msdosfs as well as fusefs.
PR: 238565
Sponsored by: The FreeBSD Foundation
CID 1400451: case 0 is missing a break/return and falling through to the
default case. waitpid(0, ...) makes little sense in the child, we likely
wanted to terminate immediately.
CID 1400453: size argument uses sizeof(char **) instead of sizeof(char *)
and is assigned to a char **; sizeof's match but "this isn't a portable
assumption".
CID: 1400451, 1400453
MFC after: 3 days
command to simplify firewall reloading.
The `missing` option suppresses EEXIST error code, but does check that
existing table has the same parameters as new one. The `or-flush` option
implies `missing` option and additionally does flush for table if it
is already exist.
Submitted by: lev
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D18339
Fixed by r348215, bectl ujail first attempts the trivial fetch of a jid by
passing the first argument to 'ujail' to jail_getid(3) in case a jid/name
have been passed in instead of a BE name. For numerically named BEs, this
was doing the wrong thing: instead of failing to locate the jid specified
and falling back to mountpath search, jail_getid(3) would return the input
as-is.
While here, I've fixed bectl_jail_cleanup which still used a hard-coded pool
name that was overlooked w.r.t. other work that was in-flight around the
same time.
MFC after: 3 days
Add Chacha20 mode to Encrypted Kernel Crash Dumps.
Chacha20 does not require messages to be multiples of block size, so it is
valid to use the cipher on non-block-sized messages without the explicit
padding AES-CBC would require. Therefore, allow use with simultaneous dump
compression. (Continue to disallow use of AES-CBC EKCD with compression.)
dumpon(8) gains a -C cipher flag to select between chacha and aes-cbc.
It defaults to chacha if no -C option is provided. The man page documents this
behavior.
Relnotes: sure
Sponsored by: Dell EMC Isilon
In commit r345845, a portion of documentation for the create subcommand was
removed. Specifically, for creating a snapshot of an existing boot
environment. bectl even has a test-case for this functionality.
Removing the sub-command description was discussed in PR 235850.
This patch brings back the second "create" description that was originally
in place. Albeit, with a few wording/clarifying changes.
Submitted by: Rob Fairbanks <rob.fx907 gmail com>
Reviewed by: kevans
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D20249
