MFC r331666: ZFS vn_rele_async: catch up with the use of refcount(9) for the vnode use count
It's not sufficient nor required to use the vnode interlock when
checking if we are going to drop the last use count as the code in
vputx() uses refcount (atomic) operations for both checking and
decrementing the use code. Apply the same method to vn_rele_async().
While here, remove vn_rele_inactive(), a wrapper around vrele() that
didn't add any value.
Also, the change required making vfs_refcount_release_if_not_last()
public. I've made vfs_refcount_acquire_if_not_zero() public as well.
They are in sys/refcount.h now. While making the move I've dropped the
vfs_ prefix.
MFC r331616: vfs_donmount: in certain cases try r/o mount if r/w mount fails
If the operation is not an update, if neither r/w nor r/o mode is
explicitly requested, if the error code hints at the possibility of the
media being read-only, and if the fallback is allowed, then we can try
to automatically downgrade to the readonly mode.
This is especially useful for auto-mounting of removable media that
sometimes can happen to be write-protected.
The fallback to r/o is not enabled by default. It can be requested on a
per-mount basis with a new mount option, 'autoro'. Or it can be
globally allowed by setting vfs.default_autoro.
Refactor the currdev setting to find the device we booted from. Limit
searching when we don't already have a reasonable currdev from that to
the same device only. Search a little harder for ZFS volumes as that's
needed for loader.efi to live on an ESP.
r332429:
cron(8): Reload database if an existing job in cron.d changed as well
Directory mtime will only change if a file is added or removed, not
modified. For /var/cron/tabs, this is fine because of how crontab(1) manages
it using temp files so all crontab(1) changes will trigger a reload of the
database.
For /etc/cron.d and /usr/local/etc/cron.d, this is not necessarily the case.
Instead of checking their mtime, we should descend into them and check mtime
on all jobs also.
r332431:
cron(8): Correct test sense
We're about to use the result of fstat(2) either way, so don't do that if it
fails...
Harry Schmalzbauer reports that some firmware, in his experience, trips
over the ESP we install due to the volume label. It has been theorized that
this is due to some confusion with the label and the path on the ESP to
boot1.efi.
Regardless, Harry found that renaming the label seems to fix it.
MFC r332573: Regenerate FAT templates after r332561
MFC r332452: Update vt(4) "Terminus BSD Console" font to v4.46
"Terminus BSD Console" is a derivative of Terminus that is provided
by Mr. Dimitar Zhekov under the 2-clause BSD license for use by the
FreeBSD vt(4) console and other BSDs.
MFC 331466:
Add a workaround to the hypervisor detection for older versions of KVM.
Originally KVM set %eax to 0 in the cpuid leaf 0x4000000 rather than
to the highest supported leaf in the hypervisor "branch". Detect this
case and fixup the %eax value so that the hypervisor is still
detected.
growfs: Commit the changes after expanding the partition
This fix the problem in arm snapshot present since at least 6 months
where growfs was failing at firstboot and dropped you in a single
user shell.
Note: In addition to this merge, kern.geom.part.mbr.enforce_chs has
been enabled on the build machine to mitigate against the issue in
the PR referenced.
Handle Programmable Early Warning for control commands in sa(4).
When the tape position is inside the Early Warning area, the tape
drive will return a sense key of NO SENSE, and an ASC/ASCQ of
0x00,0x02, which means: End-of-partition/medium detected". If
this was in response to a control command like WRITE FILEMARKS,
we correctly translate this as informational status and return
0 from saerror().
Programmable Early Warning should be handled the same way, but
we weren't handling it that way. As a result, if a PEW status
(sense key of NO SENSE, ASC/ASCQ of 0x00,0x07, "Programmable early
warning detected") came back in response to a WRITE FILEMARKS,
we returned an error.
The impact of this was that if an application was writing to a
sa(4) device, and a PEW area was set (in the Device Configuration
Extension subpage -- mode page 0x10, subpage 1), and a filemark
needed to be written on close, we could wind up returning an error
to the user on close because of a "failure" to write the filemarks.
It actually isn't a failure, but rather just a status report from
the drive, and shouldn't be treated as a failure.
sys/cam/scsi/scsi_sa.c:
For control commands in saerror(), treat asc/ascq 0x00,0x07
the same as 0x00,{0-5} -- not an error. Return 0, since
the command actually did succeed.
Reported by: Dr. Andreas Haakh <andreas@haakh.de>
Tested by: Dr. Andreas Haakh <andreas@haakh.de>
Sponsored by: Spectra Logic
------------------------------------------------------------------------
MFC r332421: vt: add three more cp437 mappings for vga textmode
In UTF-8 locales mandoc uses a number of characters outside of the Basic
Latin group, e.g. from general punctuation or miscellaneous mathematical
symbols, and these rendered as ? in text mode.
This change adds (char, replacement, code point, description):
– - U+2013 En Dash
⟨ < U+27E8 Mathematical Left Angle Bracket
⟩ > U+27E9 Mathematical Right Angle Bracket
This change addresses some common cases; there are others that still
need to be added after a more thorough review.
MFC r332387: Annotate geom modules with MODULE_VERSION
GEOM ELI may double ask the password during boot. Once at loader time, and
once at init time.
This happens due a module loading bug. By default GEOM ELI caches the
password in the kernel, but without the MODULE_VERSION annotation, the
kernel loads over the kernel module, even if the GEOM ELI was compiled into
the kernel. In this case, the newly loaded module
purges/invalidates/overwrites the GEOM ELI's password cache, which causes
the double asking.
This MFC commit differs slightly from head, due to pc98 removal. These
changes were trivial and should be obvious.
Don't show the number of currently established SCTP associations,
since this is not monotonically increasing. It's number can be
derived from the other counters shown.
MFC 331324: Ensure thread library is initialized in pthread_testcancel().
Call _thr_check_init() before reading curthread in pthread_testcancel().
If a constructor in a library creates a semaphore via sem_init() and
then waits for it via sem_wait(), the program can core dump in
_pthread_testcancel() called from sem_wait(). This is because the
semaphore implementation lives in libc, so the library's constructors
can be run before libthr's constructors.
Add benchmark for getresuid(2) - three pointers, although only "output" ones,
and quite lightwait.
The purpose of this commit, and the previous one, is to be able to measure
overhead of pointer arguments - in case you're running a strange architecture
where pointers and integers are quite different things at the hardware level.
The crash scenario goes like this: there's a thread waiting on "reinstate";
because it doesn't update the timeout counter it gets terminated by the
callout; at this point the maintenance thread starts the termination routine.
The first thread finishes waiting, proceeds to icl_conn_handoff(), and drops
the refcount, which allows the maintenance thread to free its resources. At
this point another thread receives a PDU. Boom.
Check for duplicates when modifying an iSCSI session. Previously we did
this check on open, but "iscsictl -M", or an iSCSI redirect received by
iscsid(8) could end up with two sessions with the same target name and
portal.
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