Commit Graph

19 Commits

Author SHA1 Message Date
gVisor bot c81ac8ec3b Merge pull request #2672 from amscanne:shim-integrated
PiperOrigin-RevId: 321053634
2020-07-13 16:10:58 -07:00
Bhasker Hariharan c4bdd0118f Add missing newline in /sys/devices/systen/cpu/onine
PiperOrigin-RevId: 319143410
2020-06-30 19:01:55 -07:00
Fabricio Voznika 96519e2c9d Implement POSIX locks
- Change FileDescriptionImpl Lock/UnlockPOSIX signature to
  take {start,length,whence}, so the correct offset can be
  calculated in the implementations.
- Create PosixLocker interface to make it possible to share
  the same locking code from different implementations.

Closes #1480

PiperOrigin-RevId: 316910286
2020-06-17 10:04:26 -07:00
Fabricio Voznika 67565078bb Implement flock(2) in VFS2
LockFD is the generic implementation that can be embedded in
FileDescriptionImpl implementations. Unique lock ID is
maintained in vfs.FileDescription and is created on demand.

Updates #1480

PiperOrigin-RevId: 315604825
2020-06-09 18:46:42 -07:00
Jamie Liu 9115f26851 Allocate device numbers for VFS2 filesystems.
Updates #1197, #1198, #1672

PiperOrigin-RevId: 310432006
2020-05-07 14:01:53 -07:00
Fabricio Voznika b3bd41434c Return correct name for imported host files
Implement PrependPath() in host.filesystem to correctly format
name for host files.

Updates #1672

PiperOrigin-RevId: 309959135
2020-05-05 09:21:14 -07:00
Dean Deng 632b104aff Plumb context.Context into kernfs.Inode.Open().
PiperOrigin-RevId: 308304793
2020-04-24 12:37:49 -07:00
Fabricio Voznika 2cc0fd42f4 Fixes for procfs
- Return ENOENT for /proc/[pid]/task if task is zoombied or terminated
- Allow directory to be Seek() to the end
- Construct synthetic files for /proc/[pid]/ns/*
- Changed GenericDirectoryFD.Init to not register with FileDescription,
  otherwise other implementation cannot change behavior.

Updates #1195,1193

PiperOrigin-RevId: 308294649
2020-04-24 11:45:19 -07:00
Nicolas Lacasse 10f2c8db91 Add FilesystemType.Name method, and FilesystemType field to Filesystem struct.
Both have analogues in Linux:
* struct file_system_type has a char *name field.
* struct super_block keeps a pointer to the file_system_type.

These fields are necessary to support the `filesystem type` field in
/proc/[pid]/mountinfo.

PiperOrigin-RevId: 303434063
2020-03-27 16:56:16 -07:00
Fabricio Voznika 2a6c4369be Enforce file size rlimits in VFS2
Updates #1035

PiperOrigin-RevId: 301255357
2020-03-16 16:00:49 -07:00
Fabricio Voznika 0f60799a4f Add calls to vfs.CheckSetStat to fsimpls
Only gofer filesystem was calling vfs.CheckSetStat for
vfs.FilesystemImpl.SetStatAt and vfs.FileDescriptionImpl.SetStat.

Updates #1193, #1672, #1197

PiperOrigin-RevId: 301226522
2020-03-16 13:29:12 -07:00
Fabricio Voznika 9712775028 Disallow kernfs.Inode.SetStat for readonly inodes
Updates #1195, #1193

PiperOrigin-RevId: 300950993
2020-03-14 13:48:06 -07:00
gVisor bot e4c7f3e6f6 Inline vfs.VirtualFilesystem in Kernel struct
This saves one pointer dereference per VFS access.

Updates #1623

PiperOrigin-RevId: 295216176
2020-02-14 13:40:39 -08:00
gVisor bot 4075de11be Plumb VFS2 inside the Sentry
- Added fsbridge package with interface that can be used to open
  and read from VFS1 and VFS2 files.
- Converted ELF loader to use fsbridge
- Added VFS2 types to FSContext
- Added vfs.MountNamespace to ThreadGroup

Updates #1623

PiperOrigin-RevId: 295183950
2020-02-14 11:12:47 -08:00
gVisor bot a6024f7f5f Add FileExec flag to OpenOptions
This allow callers to say whether the file is being
opened to be executed, so that the proper checks can
be done from FilesystemImpl.OpenAt()

Updates #1623

PiperOrigin-RevId: 295042595
2020-02-13 17:57:36 -08:00
Adin Scannell 0e2f1b7abd Update package locations.
Because the abi will depend on the core types for marshalling (usermem,
context, safemem, safecopy), these need to be flattened from the sentry
directory. These packages contain no sentry-specific details.

PiperOrigin-RevId: 291811289
2020-01-27 15:31:32 -08:00
Adin Scannell d29e59af9f Standardize on tools directory.
PiperOrigin-RevId: 291745021
2020-01-27 12:21:00 -08:00
Rahat Mahmood 896bd654b6 De-duplicate common test functionality for VFS2 filesystems.
PiperOrigin-RevId: 291041576
2020-01-22 15:16:21 -08:00
Rahat Mahmood ad1968ed56 Implement sysfs.
PiperOrigin-RevId: 290822487
2020-01-21 15:13:26 -08:00