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2020-08-21Merge release-20200810.0-86-g23070b2e5 (automated)gVisor bot
2020-08-21Internal change.gVisor bot
PiperOrigin-RevId: 327892274
2020-08-21Merge release-20200810.0-85-g0ea03f501 (automated)gVisor bot
2020-08-21Clarify seek behaviour for kernfs.GenericDirectoryFD.Rahat Mahmood
- Remove comment about GenericDirectoryFD not being compatible with dynamic directories. It is currently being used to implement dynamic directories. - Try to handle SEEK_END better than setting the offset to infinity. SEEK_END is poorly defined for dynamic directories anyways, so at least try make it work correctly for the static entries. Updates #1193. PiperOrigin-RevId: 327890128
2020-08-21Merge release-20200810.0-84-g5f33fdf37 (automated)gVisor bot
2020-08-21Pass overlay credentials via context in copy up.Nicolas Lacasse
Some VFS operations (those which operate on FDs) get their credentials via the context instead of via an explicit creds param. For these cases, we must pass the overlay credentials on the context. PiperOrigin-RevId: 327881259
2020-08-21Merge release-20200810.0-83-g5ec3d4ed3 (automated)gVisor bot
2020-08-21Make mounts ReadWrite first, then later change to ReadOnly.Nicolas Lacasse
This lets us create "synthetic" mountpoint directories in ReadOnly mounts during VFS setup. Also add context.WithMountNamespace, as some filesystems (like overlay) require a MountNamespace on ctx to handle vfs.Filesystem Operations. PiperOrigin-RevId: 327874971
2020-08-21Merge release-20200810.0-82-gc9e752b64 (automated)gVisor bot
2020-08-21Merge release-20200810.0-81-g2c422b7f2 (automated)gVisor bot
2020-08-21Fix parent directory creation in CreateDeviceFile.Nicolas Lacasse
It was not properly creating recursive directories. Added tests for this case. Updates #1196 PiperOrigin-RevId: 327850811
2020-08-21Merge release-20200810.0-80-gc24db90be (automated)gVisor bot
2020-08-21Merge release-20200810.0-79-g0324b94a7 (automated)gVisor bot
2020-08-20Merge release-20200810.0-78-g73c69cb4d (automated)gVisor bot
2020-08-20[vfs] Create recursive dir creation util.Ayush Ranjan
Refactored the recursive dir creation util in runsc/boot/vfs.go to be more flexible. PiperOrigin-RevId: 327719100
2020-08-20Merge release-20200810.0-77-ge8a25a283 (automated)gVisor bot
2020-08-20Merge release-20200810.0-76-gdf4822709 (automated)gVisor bot
2020-08-20Merge release-20200810.0-75-g3163aff86 (automated)gVisor bot
2020-08-20Add reference count checking to the fsimpl/host package.Dean Deng
Includes a minor refactor for inode construction. Updates #1486. PiperOrigin-RevId: 327694933
2020-08-20Merge release-20200810.0-74-g129018ab3 (automated)gVisor bot
2020-08-20Consistent precondition formattingMichael Pratt
Our "Preconditions:" blocks are very useful to determine the input invariants, but they are bit inconsistent throughout the codebase, which makes them harder to read (particularly cases with 5+ conditions in a single paragraph). I've reformatted all of the cases to fit in simple rules: 1. Cases with a single condition are placed on a single line. 2. Cases with multiple conditions are placed in a bulleted list. This format has been added to the style guide. I've also mentioned "Postconditions:", though those are much less frequently used, and all uses already match this style. PiperOrigin-RevId: 327687465
2020-08-20Merge release-20200810.0-73-gf12b545d8 (automated)gVisor bot
2020-08-20Skip listening TCP ports when trying to bind a free port.Bhasker Hariharan
PiperOrigin-RevId: 327686558
2020-08-20Merge release-20200810.0-72-g7ca62b9da (automated)gVisor bot
2020-08-20Merge release-20200810.0-71-g710adf23c (automated)gVisor bot
2020-08-20Merge release-20200810.0-70-gd2e32395c (automated)gVisor bot
2020-08-20Fix tabs in lock-ordering doc.Nicolas Lacasse
PiperOrigin-RevId: 327654207
2020-08-20Merge release-20200810.0-69-gbe76c7ce6 (automated)gVisor bot
2020-08-20Merge release-20200810.0-68-g633570462 (automated)gVisor bot
2020-08-19Remove path walk from localFile.MknodFabricio Voznika
Replace mknod call with mknodat equivalent to protect against symlink attacks. Also added Mknod tests. Remove goferfs reliance on gofer to check for file existence before creating a synthetic entry. Updates #2923 PiperOrigin-RevId: 327544516
2020-08-20Merge release-20200810.0-67-g25babd635 (automated)gVisor bot
2020-08-19Merge release-20200810.0-66-gf8a948300 (automated)gVisor bot
2020-08-19Merge release-20200810.0-65-g182f66ee5 (automated)gVisor bot
2020-08-19ip6tables: move ipv4-specific logic into its own fileKevin Krakauer
A later change will introduce the equivalent IPv6 logic. #3549 PiperOrigin-RevId: 327499064
2020-08-19Merge release-20200810.0-64-g5cf330106 (automated)gVisor bot
2020-08-19Merge release-20200810.0-62-g41777e90e (automated)gVisor bot
2020-08-19Return appropriate errors when file locking is unsuccessful.Dean Deng
test_eintr now passes in the Python runtime tests. Updates #3515. PiperOrigin-RevId: 327441081
2020-08-19[vfs] Allow offsets for special files other than regular files.Ayush Ranjan
Some character and block devices can be seekable. So allow their FD to maintain file offset. PiperOrigin-RevId: 327370684
2020-08-19Get rid of kernfs.Inode.Destroy.Dean Deng
This interface method is unneeded. PiperOrigin-RevId: 327370325
2020-08-19Move ERESTART* error definitions to syserror package.Dean Deng
This is needed to avoid circular dependencies between the vfs and kernel packages. PiperOrigin-RevId: 327355524
2020-08-19Don't set atime if mount is readonlyFabricio Voznika
Updates #1035 PiperOrigin-RevId: 327351475
2020-08-19Add more information to panic when device ID don't matchFabricio Voznika
PiperOrigin-RevId: 327351357
2020-08-19Avoid holding locks when opening files in VFS2.Jamie Liu
Fixes #3243, #3521 PiperOrigin-RevId: 327308890
2020-08-19[vfs2] Implement /proc/sys/net/ipv4/tcp_rmem and /proc/sys/net/ipv4/tcp_wmem.Ayush Ranjan
Updates #1035 PiperOrigin-RevId: 327253907
2020-08-19Add a skeleton for verity file systemgVisor bot
PiperOrigin-RevId: 327123477
2020-08-19Stop masking the IO error in handleIOError.Nicolas Lacasse
PiperOrigin-RevId: 327123331
2020-08-19[vfs] Do O_DIRECTORY check after resolving symlinks.Ayush Ranjan
Fixes python runtime test test_glob. Updates #3515 We were checking is the to-be-opened dentry is a dir or not before resolving symlinks. We should check that after resolving symlinks. This was preventing us from opening a symlink which pointed to a directory with O_DIRECTORY. Also added this check in tmpfs and removed a duplicate check. PiperOrigin-RevId: 327085895
2020-08-19Remove weak references from unix sockets.Dean Deng
The abstract socket namespace no longer holds any references on sockets. Instead, TryIncRef() is used when a socket is being retrieved in BoundEndpoint(). Abstract sockets are now responsible for removing themselves from the namespace they are in, when they are destroyed. Updates #1486. PiperOrigin-RevId: 327064173
2020-08-19[vfs] Return EIO when opening /dev/tty.Ayush Ranjan
This is in compliance with VFS1. See pkg/sentry/fs/dev/tty.go in the struct ttyInodeOperations. Fixes the failure of python runtime test_ioctl. Updates #3515 PiperOrigin-RevId: 327042758
2020-08-19Merge release-20200810.0-61-g333172229 (automated)gVisor bot
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