The FUSE protocol allows the client (kernel) to cache a file's size, if the
server (userspace daemon) allows it. A well-behaved daemon obviously should
not change a file's size while a client has it cached. But a buggy daemon
might. If the kernel ever detects that that has happened, then it should
invalidate the entire cache for that file. Previously, we would not only
cache stale data, but in the case of a file extension while we had the size
cached, we accidentally extended the cache with zeros.
PR: 244178
Reported by: Ben RUBSON <ben.rubson@gmx.com>
Reviewed by: cem
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24012
Basic test case where we create a bridge loop, verify that we really are
looping and then enable spanning tree to resolve the loop.
Reviewed by: philip
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23959
We were reusing a structure for multiple operations, but failing to
reinitialize one member. The result is that a server that cares about FUSE
file handle IDs would see one correct FUSE_FSYNC operation, and one with the
FHID unset.
PR: 244431
Reported by: Agata <chogata@gmail.com>
MFC after: 2 weeks
Very basic bridge test: Set up two jails and test that they can pass IPv4
traffic over the bridge.
Reviewed by: melifaro, philip
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23697
As with the rest of pjdfstest, tag the symlink with package=tests.
The tests -> . symlink seems a little strange but that's independent
of pkgbase.
Sponsored by: The FreeBSD Foundation
kldload() returns a positive integer when it loads a ko, so check that the
return value is -1 to detect error cases, not that it's different from zero.
MFC after: 3 days
X-MFC-With: r357234
kldload() returns an error (EEXIST) if the module is already loaded.
That's not a problem for us, so ignore that error.
While here also clean up include statements.
MFC after: 3 days
X-MFC-With: r357234
The horrific GENRAND construction bent over backwards to construct 64-bit
signed integers from the 31-bit output of random(3) for about 20 numbers per
test. Reproducibility wasn't a goal: random(3) was seeded with
srandomdev(3). Speed is not a factor for generating 20 integers with
arc4random(3). Range is not a factor: all uses did not bound the range
beyond that of the full [INT64_MIN, INT64_MAX]. Just use arc4random(3).
Reported by: Coverity
CIDs: 1404809, 1404817, 1404838, 1404840 and about 6x other
identical reports of dubious code relating to the
construction
if_epair abused the ifr_data field to insert its second interface in
IFC_IFLIST. If userspace provides a value for ifr_data it would get
dereferenced by the kernel leading to a panic.
Reported by: Ilja Van Sprundel <ivansprundel@ioactive.com>
MFC after: 3 days
The routing subdirectory installed into the same directory as the test tests,
which caused them to overwrite the net Kyuafile. As a result these tests were
not executed.
X-MFC-With: r356146
Redirect (and temporal) route expiration was broken a while ago.
This change brings route expiration back, with unified IPv4/IPv6 handling code.
It introduces net.inet.icmp.redirtimeout sysctl, allowing to set
an expiration time for redirected routes. It defaults to 10 minutes,
analogues with net.inet6.icmp6.redirtimeout.
Implementation uses separate file, route_temporal.c, as route.c is already
bloated with tons of different functions.
Internally, expiration is implemented as an per-rnh callout scheduled when
route with non-zero rt_expire time is added or rt_expire is changed.
It does not add any overhead when no temporal routes are present.
Callout traverses entire routing tree under wlock, scheduling expired routes
for deletion and calculating the next time it needs to be run. The rationale
for such implemention is the following: typically workloads requiring large
amount of routes have redirects turned off already, while the systems with
small amount of routes will not inhibit large overhead during tree traversal.
This changes also fixes netstat -rn display of route expiration time, which
has been broken since the conversion from kread() to sysctl.
Reviewed by: bz
MFC after: 3 weeks
Differential Revision: https://reviews.freebsd.org/D23075
Linux expects to be able to use posix_fallocate(2) on a memfd. Other places
would use this with shm_open(2) to act as a smarter ftruncate(2).
Test has been added to go along with this.
Reviewed by: kib (earlier version)
Differential Revision: https://reviews.freebsd.org/D23042
