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2019-04-29Change copyright notice to "The gVisor Authors"Michael Pratt
Based on the guidelines at https://opensource.google.com/docs/releasing/authors/. 1. $ rg -l "Google LLC" | xargs sed -i 's/Google LLC.*/The gVisor Authors./' 2. Manual fixup of "Google Inc" references. 3. Add AUTHORS file. Authors may request to be added to this file. 4. Point netstack AUTHORS to gVisor AUTHORS. Drop CONTRIBUTORS. Fixes #209 PiperOrigin-RevId: 245823212 Change-Id: I64530b24ad021a7d683137459cafc510f5ee1de9
2019-04-19Add support for the MSG_TRUNC msghdr flag.Ian Gudger
The MSG_TRUNC flag is set in the msghdr when a message is truncated. Fixes google/gvisor#200 PiperOrigin-RevId: 244440486 Change-Id: I03c7d5e7f5935c0c6b8d69b012db1780ac5b8456
2019-04-11Use open fids when fstat()ing gofer files.Jamie Liu
PiperOrigin-RevId: 243018347 Change-Id: I1e5b80607c1df0747482abea61db7fcf24536d37
2019-02-07Implement /proc/net/unix.Rahat Mahmood
PiperOrigin-RevId: 232948478 Change-Id: Ib830121e5e79afaf5d38d17aeef5a1ef97913d23
2019-01-31Remove license commentsMichael Pratt
Nothing reads them and they can simply get stale. Generated with: $ sed -i "s/licenses(\(.*\)).*/licenses(\1)/" **/BUILD PiperOrigin-RevId: 231818945 Change-Id: Ibc3f9838546b7e94f13f217060d31f4ada9d4bf0
2019-01-14Remove fs.Handle, ramfs.Entry, and all the DeprecatedFileOperations.Nicolas Lacasse
More helper structs have been added to the fsutil package to make it easier to implement fs.InodeOperations and fs.FileOperations. PiperOrigin-RevId: 229305982 Change-Id: Ib6f8d3862f4216745116857913dbfa351530223b
2018-12-21Implement SO_KEEPALIVE, TCP_KEEPIDLE, and TCP_KEEPINTVL.Ian Gudger
Within gVisor, plumb new socket options to netstack. Within netstack, fix GetSockOpt and SetSockOpt return value logic. PiperOrigin-RevId: 226532229 Change-Id: If40734e119eed633335f40b4c26facbebc791c74
2018-12-17Fix recv blocking for connectionless Unix sockets.Ian Gudger
Connectionless Unix sockets (DGRAM Unix sockets created with the socket system call) inherently only have a read queue. They do not establish bidirectional connections, instead, the connect system call only sets a default send location. Writes give the data to the other endpoint which has its own read queue. To simplify the code, connectionless Unix sockets still get read and write queues, but the write queue is a dummy and never waited on. The read queue is the connectionless endpoint's queue. This change fixes a bug where the dummy queue was incorrectly set as the read queue and the endpoint's queue was incorrectly set as the write queue. This meant that read notifications went to the dummy queue and were black holed. PiperOrigin-RevId: 225921042 Change-Id: I8d9059def787a2c3c305185b92d05093fbd2be2a
2018-12-14Implement SO_SNDTIMEOIan Gudger
PiperOrigin-RevId: 225620490 Change-Id: Ia726107b3f58093a5f881634f90b071b32d2c269
2018-12-13Fix WAITALL and RCVTIMEO interactionIan Gudger
PiperOrigin-RevId: 225424296 Change-Id: I60fcc2b859339dca9963cb32227a287e719ab765
2018-12-10Implement MSG_WAITALLIan Gudger
MSG_WAITALL requests that recv family calls do not perform short reads. It only has an effect for SOCK_STREAM sockets, other types ignore it. PiperOrigin-RevId: 224918540 Change-Id: Id97fbf972f1f7cbd4e08eec0138f8cbdf1c94fe7
2018-12-04Max link traversals should be for an entire path.Brian Geffon
The number of symbolic links that are allowed to be followed are for a full path and not just a chain of symbolic links. PiperOrigin-RevId: 224047321 Change-Id: I5e3c4caf66a93c17eeddcc7f046d1e8bb9434a40
2018-10-24Convert Unix transport to syserrIan Gudger
Previously this code used the tcpip error space. Since it is no longer part of netstack, it can use the sentry's error space (except for a few cases where there is still some shared code. This reduces the number of error space conversions required for hot Unix socket operations. PiperOrigin-RevId: 218541611 Change-Id: I3d13047006a8245b5dfda73364d37b8a453784bb
2018-10-20Refcount Unix transport queueIan Gudger
This allows us to release messages in the queue when all users close. PiperOrigin-RevId: 218033550 Change-Id: I2f6e87650fced87a3977e3b74c64775c7b885c1b
2018-10-19Use correct company name in copyright headerIan Gudger
PiperOrigin-RevId: 217951017 Change-Id: Ie08bf6987f98467d07457bcf35b5f1ff6e43c035
2018-10-17Use generic ilist in Unix transport queueIan Gudger
This should improve performance. PiperOrigin-RevId: 217610560 Change-Id: I370f196ea2396f1715a460b168ecbee197f94d6c
2018-10-17Merge queue into Unix transportIan Gudger
This queue only has a single user, so there is no need for it to use an interface. Merging it into the same package as its sole user allows us to avoid a circular dependency. This simplifies the code and should slightly improve performance. PiperOrigin-RevId: 217595889 Change-Id: Iabbd5164240b935f79933618c61581bc8dcd2822
2018-10-17Move Unix transport out of netstackIan Gudger
PiperOrigin-RevId: 217557656 Change-Id: I63d27635b1a6c12877279995d2d9847b6a19da9b
2018-10-10Enforce message size limits and avoid host calls with too many iovecsMichael Pratt
Currently, in the face of FileMem fragmentation and a large sendmsg or recvmsg call, host sockets may pass > 1024 iovecs to the host, which will immediately cause the host to return EMSGSIZE. When we detect this case, use a single intermediate buffer to pass to the kernel, copying to/from the src/dst buffer. To avoid creating unbounded intermediate buffers, enforce message size checks and truncation w.r.t. the send buffer size. The same functionality is added to netstack unix sockets for feature parity. PiperOrigin-RevId: 216590198 Change-Id: I719a32e71c7b1098d5097f35e6daf7dd5190eff7
2018-08-10Enable checkpoint/restore in cases of UDS use.Brielle Broder
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
2018-08-02Automated rollback of changelist 207037226Zhaozhong Ni
PiperOrigin-RevId: 207125440 Change-Id: I6c572afb4d693ee72a0c458a988b0e96d191cd49
2018-08-01Automated rollback of changelist 207007153Michael Pratt
PiperOrigin-RevId: 207037226 Change-Id: I8b5f1a056d4f3eab17846f2e0193bb737ecb5428
2018-08-01stateify: convert all packages to use explicit mode.Zhaozhong Ni
PiperOrigin-RevId: 207007153 Change-Id: Ifedf1cc3758dc18be16647a4ece9c840c1c636c9
2018-07-27stateify: support explicit annotation mode; convert refs and stack packages.Zhaozhong Ni
We have been unnecessarily creating too many savable types implicitly. PiperOrigin-RevId: 206334201 Change-Id: Idc5a3a14bfb7ee125c4f2bb2b1c53164e46f29a8
2018-05-16Refcount socket Dirents correctly.Christopher Koch
This should fix the socket Dirent memory leak. fs.NewFile takes a new reference. It should hold the *only* reference. DecRef that socket Dirent. Before the globalDirentMap was introduced, a mis-refcounted Dirent would be garbage collected when all references to it were gone. For socket Dirents, this meant that they would be garbage collected when the associated fs.Files disappeared. After the globalDirentMap, Dirents *must* be reference-counted correctly to be garbage collected, as Dirents remove themselves from the global map when their refcount goes to -1 (see Dirent.destroy). That removes the last pointer to that Dirent. PiperOrigin-RevId: 196878973 Change-Id: Ic7afcd1de97c7101ccb13be5fc31de0fb50963f0
2018-05-01Implement SO_TIMESTAMPIan Gudger
PiperOrigin-RevId: 195047018 Change-Id: I6d99528a00a2125f414e1e51e067205289ec9d3d
2018-04-28Check in gVisor.Googler
PiperOrigin-RevId: 194583126 Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463
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