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32 Commits
Author SHA1 Message Date
Fabricio VoznikaandgVisor bot 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 VoznikaandgVisor bot 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 LiuandgVisor bot 9115f26851 Allocate device numbers for VFS2 filesystems. 
Updates #1197, #1198, #1672

PiperOrigin-RevId: 310432006
 2020-05-07 14:01:53 -07:00
Fabricio VoznikaandgVisor bot 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 DengandgVisor bot 632b104aff Plumb context.Context into kernfs.Inode.Open(). 
PiperOrigin-RevId: 308304793
 2020-04-24 12:37:49 -07:00
Fabricio VoznikaandgVisor bot 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 LacasseandgVisor bot 696feaf10c Port devpts to VFS2. 
PiperOrigin-RevId: 308164359
 2020-04-23 17:34:29 -07:00