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2019-08-28Merge 24ecce5d (automated)gVisor bot
2019-08-28Export generated linkAddrEntryEntryTamir Duberstein
PiperOrigin-RevId: 266000128
2019-08-28Merge 784f48a7 (automated)gVisor bot
2019-08-28Merge 313c767b (automated)gVisor bot
2019-08-27Populate link address cache at dispatchTamir Duberstein
This allows the stack to learn remote link addresses on incoming packets, reducing the need to ARP to send responses. This also reduces the number of round trips to the system clock, since that may also prove to be performance-sensitive. Fixes #739. PiperOrigin-RevId: 265815816
2019-08-27Merge f64d9a7d (automated)gVisor bot
2019-08-27Merge 9679f989 (automated)gVisor bot
2019-08-27Fix comment typoMichael Pratt
PiperOrigin-RevId: 265731735
2019-08-27Merge c3956433 (automated)gVisor bot
2019-08-27Fix sendfile(2) error codeFabricio Voznika
When output file is in append mode, sendfile(2) should fail with EINVAL and not EBADF. Closes #721 PiperOrigin-RevId: 265718958
2019-08-27Mount volumes as super userFabricio Voznika
This used to be the case, but regressed after a recent change. Also made a few fixes around it and clean up the code a bit. Closes #720 PiperOrigin-RevId: 265717496
2019-08-27Merge b4cdaef4 (automated)gVisor bot
2019-08-26Merge 1fdefd41 (automated)gVisor bot
2019-08-26netstack/tcp: Add LastAck transition.Rahat Mahmood
Add missing state transition to LastAck, which should happen when the endpoint has already recieved a FIN from the remote side, and is sending its own FIN. PiperOrigin-RevId: 265568314
2019-08-26Add support for Intel cache CPUID leafsMichael Pratt
This exposes L1, L2, etc. cache sizes, cache line size, etc. Across S/R, everything except cache line size can differ from the host. This is because cache line size is critical for correct use of CLFLUSH / CLFLUSHOPT, but as far as I know, the other cache parameters can only affect performance, not correctness. AMD uses different leafs for cache information, which are not yet supported. fail. There are no known cases of cache line size other than 64 in the fleet. PiperOrigin-RevId: 265544786
2019-08-26Merge 7206202b (automated)gVisor bot
2019-08-26Merge pull request #696 from xiaobo55x:tcpip_linkgVisor bot
PiperOrigin-RevId: 265534854
2019-08-26Merge ac2200b8 (automated)gVisor bot
2019-08-26Prevent a network endpoint to send/rcv if its address was removedChris Kuiper
This addresses the problem where an endpoint has its address removed but still has outstanding references held by routes used in connected TCP/UDP sockets which prevent the removal of the endpoint. The fix adds a new "expired" flag to the referenced network endpoint, which is set when an endpoint has its address removed. Incoming packets are not delivered to an expired endpoint (unless in promiscuous mode), while sending outgoing packets triggers an error to the caller (unless in spoofing mode). In addition, a few helper functions were added to stack_test.go to reduce code duplications. PiperOrigin-RevId: 265514326
2019-08-26Merge c9c52c02 (automated)gVisor bot
2019-08-24Merge a5d01159 (automated)gVisor bot
2019-08-23Merge e75a12e8 (automated)gVisor bot
2019-08-23Implement fmt.Stringer on Route by valueTamir Duberstein
This is more convenient, since it implements the interface for both value and pointer. PiperOrigin-RevId: 265086510
2019-08-23Merge f225fdbb (automated)gVisor bot
2019-08-22Ensure yield-equivalent with an already-expired timeout.Adin Scannell
PiperOrigin-RevId: 264920977
2019-08-22Merge 52e674b4 (automated)gVisor bot
2019-08-22Merge 8d9276ed (automated)gVisor bot
2019-08-21Support binding to multicast and broadcast addressesChris Kuiper
This fixes the issue of not being able to bind to either a multicast or broadcast address as well as to send and receive data from it. The way to solve this is to treat these addresses similar to the ANY address and register their transport endpoint ID with the global stack's demuxer rather than the NIC's. That way there is no need to require an endpoint with that multicast or broadcast address. The stack's demuxer is in fact the only correct one to use, because neither broadcast- nor multicast-bound sockets care which NIC a packet was received on (for multicast a join is still needed to receive packets on a NIC). I also took the liberty of refactoring udp_test.go to consolidate a lot of duplicate code and make it easier to create repetitive tests that test the same feature for a variety of packet and socket types. For this purpose I created a "flowType" that represents two things: 1) the type of packet being sent or received and 2) the type of socket used for the test. E.g., a "multicastV4in6" flow represents a V4-mapped multicast packet run through a V6-dual socket. This allows writing significantly simpler tests. A nice example is testTTL(). PiperOrigin-RevId: 264766909
2019-08-22Merge 5fd63d1c (automated)gVisor bot
2019-08-21Merge 573e6e4b (automated)gVisor bot
2019-08-21Use tcpip.Subnet in tcpip.RouteTamir Duberstein
This is the first step in replacing some of the redundant types with the standard library equivalents. PiperOrigin-RevId: 264706552
2019-08-20Add tcpip.Route.String and tcpip.AddressMask.PrefixChris Kuiper
PiperOrigin-RevId: 264544163
2019-08-21Merge 7609da6c (automated)gVisor bot
2019-08-21Merge 8b7e7a04 (automated)gVisor bot
2019-08-20Merge 6c3a2421 (automated)gVisor bot
2019-08-20Merge 3d0715b3 (automated)gVisor bot
2019-08-20Merge cf8a689b (automated)gVisor bot
2019-08-19Merge 67d7864f (automated)gVisor bot
2019-08-19Document RWF_HIPRI not implemented for preadv2/pwritev2.Zach Koopmans
Document limitation of no reasonable implementation for RWF_HIPRI flag (High Priority Read/Write for block-based file systems). PiperOrigin-RevId: 264237589
2019-08-19Merge 3ffbdffd (automated)gVisor bot
2019-08-19Internal change.gVisor bot
PiperOrigin-RevId: 264218306
2019-08-19hostinet: fix parsing route netlink messageJianfeng Tan
We wrongly parses output interface as gateway address. The fix is straightforward. Fixes #638 Signed-off-by: Jianfeng Tan <henry.tjf@antfin.com> Change-Id: Ia4bab31f3c238b0278ea57ab22590fad00eaf061 COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/684 from tanjianfeng:fix-638 b940e810367ad1273519bfa594f4371bdd293e83 PiperOrigin-RevId: 264211336
2019-08-19Read iptables via sockopts.Kevin Krakauer
PiperOrigin-RevId: 264180125
2019-08-16netstack: disconnect an unix socket only if the address family is AF_UNSPECAndrei Vagin
Linux allows to call connect for ANY and the zero port. PiperOrigin-RevId: 263892534
2019-08-17Merge 2a130335 (automated)gVisor bot
2019-08-16procfs: Migrate seqfile implementations.Ayush Ranjan
Migrates all (except 3) seqfile implementations to the vfs.DynamicBytesSource interface. There should not be any change in functionality due to this migration itself. Please note that the following seqfile implementations have not been migrated: - /proc/filesystems in proc/filesystems.go - /proc/[pid]/mountinfo in proc/mounts.go - /proc/[pid]/mounts in proc/mounts.go This is because these depend on pending changes in /pkg/senty/vfs. PiperOrigin-RevId: 263880719
2019-08-16ptrace: detect if a stub process exited unexpectedlyAndrei Vagin
PiperOrigin-RevId: 263880577
2019-08-16Merge f7114e0a (automated)gVisor bot
2019-08-16Add subnet checking to NIC.findEndpoint and consolidate with NIC.getRefChris Kuiper
This adds the same logic to NIC.findEndpoint that is already done in NIC.getRef. Since this makes the two functions very similar they were combined into one with the originals being wrappers. PiperOrigin-RevId: 263864708
2019-08-16Merge d60d99cb (automated)gVisor bot
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