The cache policy determines whether Lookup should return a negative dirent, or
just ENOENT. This CL fixes one spot where we returned a negative dirent without
first consulting the policy.
PiperOrigin-RevId: 208280230
Change-Id: I8f963bbdb45a95a74ad0ecc1eef47eff2092d3a4
In the main readme, checkpoint and restore is listed as an
advanced feature, and a link to its readme is provided.
PiperOrigin-RevId: 208279833
Change-Id: Ib3db28a8df8ec93cf8d98d5dfd2ee2f75a61e664
Previously, processes which used file-system Unix Domain Sockets could not be
checkpoint-ed in runsc because the sockets were saved with their inode
numbers which do not necessarily remain the same upon restore. Now,
the sockets are also saved with their paths so that the new inodes
can be determined for the sockets based on these paths after restoring.
Tests for cases with UDS use are included. Test cleanup to come.
PiperOrigin-RevId: 208268781
Change-Id: Ieaa5d5d9a64914ca105cae199fd8492710b1d7ec
inethost doesn't support netlink and 'ifconfig' call to retrieve IP address
fails. Look up IP address in /etc/hosts instead.
PiperOrigin-RevId: 208135641
Change-Id: I3c2ce15db6fc7c3306a45e4bfb9cc5d4423ffad3
The message size check is legitimate: the size must be negotiated, which
relies on the fixed message limit up front. Sending a message larger than
that indicates that the connection is out of sync and is considered a
socket error (disconnect).
Similarly, sending a size that is too small indicates that the stream is
out-of-sync or invalid.
PiperOrigin-RevId: 207996551
Change-Id: Icd8b513d5307e9d5953dbb957ee70ceea111098d
Add option to redirect packet back to netstack if it's destined to itself.
This fixes the problem where connecting to the local NIC address would
not work, e.g.:
echo bar | nc -l -p 8080 &
echo foo | nc 192.168.0.2 8080
PiperOrigin-RevId: 207995083
Change-Id: I17adc2a04df48bfea711011a5df206326a1fb8ef
Because the Drop method may be called across vCPUs, it is necessary to protect
the PCID database with a mutex to prevent concurrent modification. The PCID is
assigned prior to entersyscall, so it's safe to block.
PiperOrigin-RevId: 207992864
Change-Id: I8b36d55106981f51e30dcf03e12886330bb79d67
Data race is:
Read:
(*connectionlessEndpoint).UnidirectionalConnect:
writeQueue: e.receiver.(*queueReceiver).readQueue,
Write:
(*connectionlessEndpoint).Close:
e.receiver = nil
The problem is that (*connectionlessEndpoint).UnidirectionalConnect assumed
that baseEndpoint.receiver is immutable which is explicitly not the case.
Fixing this required two changes:
1. Add synchronization around access of baseEndpoint.receiver in
(*connectionlessEndpoint).UnidirectionalConnect.
2. Check for baseEndpoint.receiver being nil in
(*connectionlessEndpoint).UnidirectionalConnect.
PiperOrigin-RevId: 207984402
Change-Id: Icddeeb43805e777fa3ef874329fa704891d14181
SACK is disabled by default and needs to be manually enabled. It not only
improves performance, but also fixes hangs downloading files from certain
websites.
PiperOrigin-RevId: 207906742
Change-Id: I4fb7277b67bfdf83ac8195f1b9c38265a0d51e8b
integration_test runs manually and breakage wasn't detected. Added test to
kokoro to ensure breakages are detected in the future.
PiperOrigin-RevId: 207772835
Change-Id: Iada81b579b558477d4db3516b38366ef6a2e933d
This CL adds a new cache-policy for gofer filesystems that uses the host page
cache, but causes dirents to be reloaded on each Walk, and does not cache
readdir results.
This policy is useful when the remote filesystem may change out from underneath
us, as any remote changes will be reflected on the next Walk.
Importantly, this cache policy is only consistent if we do not use gVisor's
internal page cache, since that page cache is tied to the Inode and may be
thrown away upon Revalidation.
This cache policy should only be used when the gofer supports donating host
FDs, since then gVisor will make use of the host kernel page cache, which will
be consistent for all open files in the gofer. In fact, a panic will be raised
if a file is opened without a donated FD.
PiperOrigin-RevId: 207752937
Change-Id: I233cb78b4695bbe00a4605ae64080a47629329b8
In other news, apparently proc.fdInfo is the last user of ramfs.File.
PiperOrigin-RevId: 207564572
Change-Id: I5a92515698cc89652b80bea9a32d309e14059869
Store the new assigned pcid in p.cache[pt].
Signed-off-by: ShiruRen <renshiru2000@gmail.com>
Change-Id: I4aee4e06559e429fb5e90cb9fe28b36139e3b4b6
PiperOrigin-RevId: 207563833
This CL implements CUBIC as described in https://tools.ietf.org/html/rfc8312.
PiperOrigin-RevId: 207353142
Change-Id: I329cbf3277f91127e99e488f07d906f6779c6603
mysql image test is timing out sporadically and it's hard to tell
where the slow down in coming from.
PiperOrigin-RevId: 207147237
Change-Id: I05a4d2c116292695d63cf861f3b89cd1c54b6106
Add support for the seccomp syscall and the flag SECCOMP_FILTER_FLAG_TSYNC.
PiperOrigin-RevId: 207101507
Change-Id: I5eb8ba9d5ef71b0e683930a6429182726dc23175
When adding MultiDeviceKeys and their values into MultiDevice maps, make
sure the keys and values have not already been added. This ensures that
preexisting key/value pairs are not overridden.
PiperOrigin-RevId: 206942766
Change-Id: I9d85f38eb59ba59f0305e6614a52690608944981
Currently, there is an attempt to print FD flags, but
they are not decoded into a number, so we see something like this:
/criu # cat /proc/self/fdinfo/0
flags: {%!o(bool=000false)}
Actually, fdinfo has to contain file flags.
Change-Id: Idcbb7db908067447eb9ae6f2c3cfb861f2be1a97
PiperOrigin-RevId: 206794498
We have been unnecessarily creating too many savable types implicitly.
PiperOrigin-RevId: 206334201
Change-Id: Idc5a3a14bfb7ee125c4f2bb2b1c53164e46f29a8
When copying-up files from a lower fs to an upper, we also copy the extended
attributes on the file. If there is a (nested) overlay inside the lower, some
of these extended attributes configure the lower overlay, and should not be
copied-up to the upper.
In particular, whiteout attributes in the lower fs overlay should not be
copied-up, since the upper fs may actually contain the file.
PiperOrigin-RevId: 206236010
Change-Id: Ia0454ac7b99d0e11383f732a529cb195ed364062
Nicolas Lacasse
Justine Olshan
Brielle Broder
Neel Natu
Fabricio Voznika
Michael Pratt
Adin Scannell
Ian Gudger
Jamie Liu
Bhasker Hariharan
Zhaozhong Ni
Brian Geffon
ShiruRen
Andrei Vagin