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2021-02-12Merge release-20210201.0-92-g34614c398 (automated)gVisor bot
2021-02-11Unconditionally check for directory-ness in overlay.filesystem.UnlinkAt().Jamie Liu
PiperOrigin-RevId: 357106080
2021-02-11Internal change.gVisor bot
PiperOrigin-RevId: 357090170
2021-02-11Merge release-20210201.0-86-gae8d966f5 (automated)gVisor bot
2021-02-11Assign controlling terminal when tty is opened and support NOCTTYKevin Krakauer
PiperOrigin-RevId: 357015186
2021-02-11Merge release-20210201.0-84-g81ea0016e (automated)gVisor bot
2021-02-10Support setgid directories in tmpfs and kernfsKevin Krakauer
PiperOrigin-RevId: 356868412
2021-02-10Merge release-20210201.0-72-g298c129cc (automated)gVisor bot
2021-02-09Add support for setting SO_SNDBUF for unix domain sockets.Bhasker Hariharan
The limits for snd/rcv buffers for unix domain socket is controlled by the following sysctls on linux - net.core.rmem_default - net.core.rmem_max - net.core.wmem_default - net.core.wmem_max Today in gVisor we do not expose these sysctls but we do support setting the equivalent in netstack via stack.Options() method. But AF_UNIX sockets in gVisor can be used without netstack, with hostinet or even without any networking stack at all. Which means ideally these sysctls need to live as globals in gVisor. But rather than make this a big change for now we hardcode the limits in the AF_UNIX implementation itself (which in itself is better than where we were before) where it SO_SNDBUF was hardcoded to 16KiB. Further we bump the initial limit to a default value of 208 KiB to match linux from the paltry 16 KiB we use today. Updates #5132 PiperOrigin-RevId: 356665498
2021-02-09Merge release-20210201.0-63-gd6dbe6e5c (automated)gVisor bot
2021-02-09pipe: writeLocked has to return ErrWouldBlock if the pipe is fullAndrei Vagin
PiperOrigin-RevId: 356450303
2021-02-06Merge release-20210125.0-88-g09afd6832 (automated)gVisor bot
2021-02-05[vfs] Handle `.` and `..` as last path component names in kernfs Rename.Ayush Ranjan
According to vfs.FilesystemImpl.RenameAt documentation: - If the last path component in rp is "." or "..", and opts.Flags contains RENAME_NOREPLACE, RenameAt returns EEXIST. - If the last path component in rp is "." or "..", and opts.Flags does not contain RENAME_NOREPLACE, RenameAt returns EBUSY. Reported-by: syzbot+6189786e64fe13fe43f8@syzkaller.appspotmail.com PiperOrigin-RevId: 355959266
2021-02-04Merge release-20210125.0-83-gaed9d8ce9 (automated)gVisor bot
2021-02-04Call kernfs.syntheticDir.InitRefs() on creation.Nicolas Lacasse
PiperOrigin-RevId: 355675900
2021-02-04Merge release-20210125.0-79-gf2c881f68 (automated)gVisor bot
2021-02-03[vfs] Make sticky bit check consistent with Linux.Ayush Ranjan
Our implementation of vfs.CheckDeleteSticky was not consistent with Linux, specifically not consistent with fs/linux.h:check_sticky(). One of the biggest differences was that the vfs implementation did not allow the owner of the sticky directory to delete files inside it that belonged to other users. This change makes our implementation consistent with Linux. Also adds an integration test to check for this. This bug is also present in VFS1. Updates #3027 PiperOrigin-RevId: 355557425
2021-01-29Merge release-20210125.0-30-g0fa534f11 (automated)gVisor bot
2021-01-29Fix deadlock in specialFileFD.pwriteFabricio Voznika
When file is regular and metadata cache is authoritative, metadata lock is taken. The code deadlocks trying to acquire the metadata lock again to update time stampts. PiperOrigin-RevId: 354584594
2021-01-29Merge release-20210125.0-21-g8d1afb418 (automated)gVisor bot
2021-01-28Change tcpip.Error to an interfaceTamir Duberstein
This makes it possible to add data to types that implement tcpip.Error. ErrBadLinkEndpoint is removed as it is unused. PiperOrigin-RevId: 354437314
2021-01-29Merge release-20210125.0-17-g62a37034f (automated)gVisor bot
2021-01-28[vfs] Fix rename implementation in OrderedChildren.Ayush Ranjan
Fixes #3027 as there is just 1 writable user using OrderedChildren's rename, unlink and rmdir (kernfs.syntheticDirectory) but it doesn't support the sticky bit yet. Fuse which is the other writable user implements its own Inode operations. PiperOrigin-RevId: 354386522
2021-01-26Merge release-20210112.0-94-g96bd076e8 (automated)gVisor bot
2021-01-26Initialize timestamps for gofer synthetic children.Dean Deng
Contrary to the comment on the socket test, the failure was due to an issue with goferfs rather than kernfs. PiperOrigin-RevId: 353918021
2021-01-22Merge release-20210112.0-75-gf52f0101b (automated)gVisor bot
2021-01-22Implement F_GETLK fcntl.Dean Deng
Fixes #5113. PiperOrigin-RevId: 353313374
2021-01-20Don't use task goroutine context in fsimpl tests.Jamie Liu
PiperOrigin-RevId: 352908368
2021-01-21Merge release-20210112.0-51-g55332aca9 (automated)gVisor bot
2021-01-21Merge release-20210112.0-50-gca9a45f28 (automated)gVisor bot
2021-01-20Move Lock/UnlockPOSIX into LockFD util.Dean Deng
PiperOrigin-RevId: 352904728
2021-01-20Fix refcount increments in gofer.filesystem.Sync.Jamie Liu
Fixes #5263 PiperOrigin-RevId: 352903844
2021-01-15Merge release-20210112.0-25-ge57ebcd37 (automated)gVisor bot
2021-01-14Check for existence before permissionsFabricio Voznika
Return EEXIST when overwritting a file as long as the caller has exec permission on the parent directory, even if the caller doesn't have write permission. Also reordered the mount write check, which happens before permission is checked. Closes #5164 PiperOrigin-RevId: 351868123
2021-01-12Fix simple mistakes identified by goreportcard.Adin Scannell
These are primarily simplification and lint mistakes. However, minor fixes are also included and tests added where appropriate. PiperOrigin-RevId: 351425971
2021-01-11Merge release-20201216.0-82-g4c4de6644 (automated)gVisor bot
2021-01-05Merge release-20201208.0-103-g2a200811d (automated)gVisor bot
2021-01-05fs/fuse: check that a task has a specified file descriptorAndrei Vagin
Reported-by: syzbot+814105309d2ae8651084@syzkaller.appspotmail.com PiperOrigin-RevId: 350159452
2020-12-31Merge release-20201208.0-102-g807a080d9 (automated)gVisor bot
2020-12-31Add missing error checks for FileDescription.Init.Dean Deng
Syzkaller discovered this bug in pipefs by doing something quite strange: creat(&(0x7f0000002a00)='./file1\x00', 0x0) mount(&(0x7f0000000440)=ANY=[], &(0x7f00000002c0)='./file1\x00', &(0x7f0000000300)='devtmpfs\x00', 0x20000d, 0x0) creat(&(0x7f0000000000)='./file1/file0\x00', 0x0) This can be reproduced with: touch mymount mkfifo /dev/mypipe mount -o ro -t devtmpfs devtmpfs mymount echo 123 > mymount/mypipe PiperOrigin-RevId: 349687714
2020-12-28Merge release-20201208.0-89-g3ff7324df (automated)gVisor bot
2020-12-17Set verityMu to be state nosaveChong Cai
PiperOrigin-RevId: 348092999
2020-12-17Fix seek on /proc/pid/cmdline when task is zombie.Nicolas Lacasse
PiperOrigin-RevId: 348056159
2020-12-17Set process group and session on host TTYFabricio Voznika
Closes #5128 PiperOrigin-RevId: 348052446
2020-12-15Change violation mode to an enumChong Cai
PiperOrigin-RevId: 347706953
2020-12-15Internal change.gVisor bot
PiperOrigin-RevId: 347671070
2020-12-11Internal change.gVisor bot
PiperOrigin-RevId: 347091372
2020-12-12Merge release-20201208.0-36-g1e92732eb (automated)gVisor bot
2020-12-11Merge release-20201208.0-31-g4cba3904f (automated)gVisor bot
2020-12-11Remove existing nogo exceptions.Adin Scannell
PiperOrigin-RevId: 347047550
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