This was introduced in 8998619212, and left behind when the hpn-ssh
patches were removed in 60c59fad88. Although Being able to log
SO_RCVBUF in debug mode might have some small value on its own, it's
not worth carrying an extra diff against upstream.
Reviewed by: kevans
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D28610
The panic reported in 253158 arises because the /mnt/.snap/.factory
snapshot allocated the last block in the filesystem. The snapshot
code allocates the last block in the filesystem as a way of setting
its length to be the size of the filesystem. Part of taking a
snapshot is to remove all the earlier snapshots from the image of
the newest snapshot so that newer snapshots will not claim the blocks
of the earlier snapshots. The panic occurs when the new snapshot
finds that both it and an earlier snapshot claim the same block.
The fix is to set the size of the snapshot to be one block after
the last block in the filesystem. This block can never be allocated
since it is not a valid block in the filesystem. This extra block
is used as a place to store the initial list of blocks that the
snapshot has already copied and is used to avoid a deadlock in and
speed up the ffs_copyonwrite() function.
Reported by: Harald Schmalzbauer
Tested by: Peter Holm
PR: 253158
Sponsored by: Netflix
This was introduced in 03f6c5cd93, which added use of
sysctl net.inet.ip.portrange.reservedhigh instead of IPPORT_RESERVED,
but it appears the rest of that change was lost in some subsequent
update.
The change should probably be restored, but until then there is no
reason to leave an unused variable around.
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
In particular, replace a note that reload through vget() is obsoleted,
with explanation why this code is required.
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
This catches both missed processing of IN_ENDOFF and missed application
of VOP_VPUT_PAIR() after VOP that created an entry in the directory.
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Such vnodes prevent inode reuse, and should be force-cleared when ffs_valloc()
is unable to find a free inode.
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
if we noted a parallel request is active and declined to overflow the
system with parallel redundant sync of the vnodes. But we need to wait
for the flush to finish to see if there are any freed resources.
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
VFS should retry inactivation when possible, then. This should provide
timely removal of unlinked unreferenced inodes.
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
When possible, relock the vnode and retry inactivation. Only vunref() is
required not to drop the vnode lock, so handle it specially by not retrying.
This is a part of the efforts to ensure that unlinked not referenced vnode
does not prevent inode from reusing.
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
because softdep_prelink() is reverted to NOP for non-J case. There is no
need to do anything before ufs_direnter() in SU/non-J case, everything
required to sync the directory is done in VOP_VPUT_PAIR().
Suggested by: mckusick
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 week
Sponsored by: The FreeBSD Foundation
Originally this was done in 8a1509e442 to forcibly cover cases
where a hole in the directory could be created by extending into
indirect block, since dependency of writing out indirect block is not
tracked. This results in excessive amount of fsyncing the directories,
where all creation of new entry forced fsync before it. This is not needed,
it is enough to fsync when IN_NEEDSYNC is set, and VOP_VPUT_PAIR() provides
the required hook to only perform required syncing.
The series of changes culminating in this commit puts the performance of
metadata-intensive loads back to that before 8a1509e442.
Analyzed by: mckusick
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
In ufs_rename case, tdvp is locked from the place where ufs_direnter()
is done till VOP_VPUT_PAIR(), which means that we no longer need to specially
handle rename in ufs_direnter(). Truncation, if possible, is done in the
same way in ffs_vput_pair() both for rename and other VOPs calling
ufs_direnter(). Remove isrename argument and set IN_ENDOFF if
ufs_direnter() succeeded and directory needs truncation.
In ffs_vput_pair(), stop verifying the condition that directory needs
truncation when IN_ENDOFF is set, instead assert that the condition is
true.
Suggested by: mckusick
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
VOP_VPUT_PAIR() provides the hook to do the truncation right before
unlock, which is required since truncation might need to fsync(), which
itself might unlock the directory vnode.
Set new flag IN_ENDOFF which indicates that i_endoff is valid and should
be checked against inode size. Excessive size is chomped, but this
operation is advisory and failure to truncate should not result in the
failure of the main VOP.
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
In particular, if unlock_vp is false, save vp's inode number and
generation. If ffs_inotovp() can re-create the vnode with the same
number and generation after we finished with handling dvp, then we most
likely raced with unmount, and were able to restore atomicity of open.
We use FFSV_REPLACE_DOOMED there, to drop the old vnode.
This additional recovery is not strictly required, but it improves the
quality of the implementation.
Suggested by: mckusick
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
It cleans IN_NEEDSYNC flag on dvp before returning, by applying
ffs_syncvnode() until success or an error different from ERELOOKUP.
IN_NEEDSYNC cleanup is required to avoid creating holes in the directories
when extended into indirect block.
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Apply VOP_VPUT_PAIR() to the end of vnode operations after the
VOP_MKNOD(), VOP_MKDIR(), VOP_LINK(), VOP_SYMLINK(), VOP_CREATE().
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
If the snapshot embrio was reclaimed under us, return error outright.
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
The current list is limited to the cases where UFS needs to handle
vput(dvp) specially. Which means VOP_CREATE(), VOP_MKDIR(), VOP_MKNOD(),
VOP_LINK(), and VOP_SYMLINK().
Reviewed by: chs, mkcusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Generic bypass cannot understand the rules of liveness for the VOP.
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
The VOP is intended to be used in situations where VFS has two
referenced locked vnodes, typically a directory vnode dvp and a vnode
vp that is linked from the directory, and at least dvp is vput(9)ed.
The child vnode can be also vput-ed, but optionally left referenced and
locked.
There, at least UFS may need to do some actions with dvp which cannot be
done while vp is also locked, so its lock might be dropped temporary.
For instance, in some cases UFS needs to sync dvp to avoid filesystem
state that is currently not handled by either kernel nor fsck. Having
such VOP provides the neccessary context for filesystem which can do
correct locking and handle potential reclamation of vp after relock.
Trivial implementation does vput(dvp) and optionally vput(vp).
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Most future operations on the returned file descriptor will fail
anyway, and application should be ready to handle that failures. Not
forcing it to understand the transient failure mode on open, which is
implementation-specific, should make us less special without loss of
reporting of errors.
Suggested by: chs
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
for all kinds of async/SU mount variants.
Submitted by: mckusick
Reviewed by: chs
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
If it is cleaned before the sync, other threads might see the inode without
the flag set, because syncing could unlock it.
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
The function alone was not used for anything but ffs_fstovp() for long time.
Suggested by: mckusick
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
It generalizes the VFS_FHTOVP() interface, making it possible to fetch
the inode without faking filehandle. Also it adds the ffs flags argument
which allows to control ffs_vgetf() call.
Requested by: mckusick
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
It specifies that caller requests a fresh non-doomed vnode. If doomed
vnode is found in the hash, it should behave similarly to FFSV_REPLACE.
Or, to put it differently, the flag is same as FFSV_REPLACE, but only
when the found hashed vnode is doomed.
Reviewed by: chs, mkcusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Later processing of ffs_truncate() might temporary unlock the directory
vnode, causing unsychronized dirhash and inode sizes if update is
postponed to UFS_TRUNCATE() callers.
Reviewed by: chs, mkcusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
and only call buf_complete() if previously started. Some error paths,
like CoW failire, might skip buf_start() and do bufdone(), which itself
call buf_complete().
Various SU handle_written_XXX() functions check that io was started
and incomplete parts of the buffer data reverted before restoring them.
This is a useful invariant that B_IO_STARTED on buffer layer allows to
keep instead of changing check and panic into check and return.
Reported by: pho
Reviewed by: chs, mckusick
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundations
as it is done in other places. Header files might need options defined
for correct operation.
Reviewed by: chs, mckusick
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
- One (1) spurious whitespace.
- One (1) occurrence of "random(3) bad, arc4random(3)" good.
- Three (3) writes that will never be seen.
The latter two points are complaints from clang-analyze. Switching to
arc4random(3) is decidedly a good idea because we weren't doing any kind
of PRNG seeding anyways. The discarded assignments are arguably good
for future-proofing, but it's better to improve the S/N ratio from
clang-analyze.
Reviewed by: bapt, manu
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D28525
This is limited to bootstrap/add because some real pkg(8) commands
have -r flags with an incompatible meaning/usage, e.g., pkg-audit.
pkg(7) will still commence the search as it has, but it will ignore any
repo objects without the given name so that overrides and whatnot still
work as expected.
The use of it for add is noted in the manpage; notably, that the
signature config for that repository will be used over global config if
it's specified. i.e., pkg(7) should assume that the given pkg did come
from that repository and treat it appropriately.
Reviewed by: bapt, manu
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D28524
Move the check for efi variables being supported to after parsing the args. This
allows '-h' to produce both as a normal user as well as on all systems.
Traditionally *BSD routing stack required to supply some
interface data for blackhole/reject routes. This lead to
varieties of hacks in routing daemons when inserting such routes.
With the recent routeing stack changes, gateway sockaddr without
RTF_GATEWAY started to be treated differently, purely as link
identifier.
This change broke net/bird, which installs blackhole routes with
127.0.0.1 gateway without RTF_GATEWAY flags.
Fix this by automatically constructing necessary gateway data at
rtsock level if RTF_REJECT/RTF_BLACKHOLE is set.
Reported by: Marek Zarychta <zarychtam at plan-b.pwste.edu.pl>
Reviewed by: donner
MFC after: 1 week
Previously, iscsi_poll() just panicked. This meant if you got a panic
on a box when using the iSCSI initiator, the attempt to shutdown would
trigger a nested panic and never write out a core. Now, CCB's sent to
iSCSI devices (such as the sychronize-cache request in dashutdown())
just fail with a timeout during a panic shutdown.
Reviewed by: scottl, mav
MFC after: 2 weeks
Sponsored by: Chelsio
Differential Revision: https://reviews.freebsd.org/D28455
If a disk's SIM doesn't support polling, then it can't be used to
store crashdumps. Leave d_dump NULL in that case so that dumpon(8)
fails gracefully rather than having dumps fail at crash time.
Reviewed by: scottl, mav, imp
MFC after: 2 weeks
Sponsored by: Chelsio
Differential Revision: https://reviews.freebsd.org/D28454
Some CAM sim drivers do not support polling (notably iscsi(4)).
Rather than using a no-op poll routine that always times out requests,
permit a SIM to set a NULL poll callback. cam_periph_runccb() will
fail polled requests non-pollable sims immediately as if they had
timed out.
Reviewed by: scottl, mav (earlier version)
Reviewed by: imp
MFC after: 2 weeks
Sponsored by: Chelsio
Differential Revision: https://reviews.freebsd.org/D28453
Widen the ifnet_detach_sxlock to cover the entire vnet sysuninit code.
This ensures that we can't end up having the vnet_sysuninit free the UDP
pcb while the detach code is running and trying to purge the UDP pcb.
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D28530
Add PBUILD_FLAGS and UNAME_r overrides to extra_chroot_setup()
to fix building ports for 14-CURRENT builds on 13.x.
MFC after: 3 days
MFC with: c511a5ab53
Sponsored by: Rubicon Communications, LLC ("Netgate")
Since commit 8fa6abb6f4 ("Expose clang's alignment builtins and use
them for roundup2/rounddown2"), clang emits warnings for several
alignment operations in these drivers because the operation is a no-op.
The compiler is arguably being too strict here, but in the meantime
let's silence the warnings by conditionally compiling the alignment
operations.
Reviewed by: arichardson, hselasky
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D28576
After d3338f3355, the lib/msun test case
'hypotl_near_underflow' would fail to compile on platforms where long
doubles weren't 80 bit, like on x86. Disable this particular test on
such platforms for now.
PR: 253313
MFC after: 1 week
X-MFC-With: d3338f3355
In error case we can leave `inp' locked, also we need to free
mbuf chain `m' in the same case. Release the lock and use `badunlocked'
label to exit with freed mbuf. Also modify UDP error statistic to
match the IPv6 code.
Remove redundant INP_RUNLOCK() from the `if (last == NULL)' block,
there are no ways to reach this point with locked `inp'.
Obtained from: Yandex LLC
MFC after: 3 days
Sponsored by: Yandex LLC
The lookup for a IPv6 multicast addresses corresponding to
the destination address in the datagram is protected by the
NET_EPOCH section. Access to each PCB is protected by INP_RLOCK
during comparing. But access to socket's so_options field is
not protected. And in some cases it is possible, that PCB
pointer is still valid, but inp_socket is not. The patch wides
lock holding to protect access to inp_socket. It copies locking
strategy from IPv4 UDP handling.
PR: 232192
Obtained from: Yandex LLC
MFC after: 3 days
Sponsored by: Yandex LLC
Differential Revision: https://reviews.freebsd.org/D28232
