summaryrefslogtreecommitdiffhomepage
path: root/pkg/sentry/fsimpl
AgeCommit message (Collapse)Author
2021-10-18Merge release-20211005.0-57-gfa56fbf44 (automated)gVisor bot
2021-10-18Report ramdiskfs usage correctlyFabricio Voznika
Updates #1035 PiperOrigin-RevId: 404072231
2021-10-18Merge release-20211005.0-52-g4f6cda4d0 (automated)gVisor bot
2021-10-18Support distinction for RWMutex and read-only locks.Adin Scannell
Fixes #6590 PiperOrigin-RevId: 404007524
2021-10-15Merge release-20211005.0-47-g33b41d8fe (automated)gVisor bot
2021-10-14Report total memory based on limit or hostFabricio Voznika
gVisor was previously reporting the lower of cgroup limit or 2GB as total memory. This may cause applications to make bad decisions based on amount of memory available to them when more than 2GB is required. This change makes the lower of cgroup limit or the host total memory to be reported inside the sandbox. This also is more inline with docker which always reports host total memory. Note that reporting cgroup limit is strictly better than host total memory when there is a limit set. Fixes #5608 PiperOrigin-RevId: 403241608
2021-10-08Merge release-20210927.0-52-g34e68b6b4 (automated)gVisor bot
2021-10-08Remove redundant slice copy in lisafs gofer client.Ayush Ranjan
listXattr() was doing redundant work. Remove it. PiperOrigin-RevId: 401871315
2021-10-08Merge release-20210927.0-51-gda41ecc5b (automated)gVisor bot
2021-10-08Disallow "trusted" namespace xattr in VFS2 gofer client.Ayush Ranjan
Allowing this namespace makes way for a lot of GetXattr RPCs to the gofer process when the gofer filesystem is the lower layer of an overlay. The overlay filesystem aggressively queries for "trusted.overlay.opaque" which in practice is never found in the lower layer gofer. But leads to a lot of wasted work. A consequence is that mutable gofer upper layer is not supported anymore but that is still consistent with VFS1. We can revisit when need arises. PiperOrigin-RevId: 401860585
2021-10-01Merge release-20210921.0-54-geac4d9ab2 (automated)gVisor bot
2021-09-27Add procfs files for SysV message queues.Zyad A. Ali
2021-09-23Merge release-20210921.0-26-g2b7766333 (automated)gVisor bot
2021-09-23Create the cgroupfs mount point in sysfs.Rahat Mahmood
Create the /sys/fs/cgroup directory when cgroups are available. This creates the empty directory to serve as the mountpoint, actually mounting cgroups is left to the launcher/userspace. This is consistent with Linux behaviour. Without this mountpoint, getdents(2) on /sys/fs indicates an empty directory even if the launcher mounts cgroupfs at /sys/fs/cgroup. The launcher can't create the mountpoint directory since sysfs doesn't support mkdir. PiperOrigin-RevId: 398596698
2021-09-21Merge release-20210906.0-52-g6fccc1856 (automated)gVisor bot
2021-09-21[lisa] Implement lisafs protocol methods in VFS2 gofer client and fsgofer.Ayush Ranjan
Introduces RPC methods in lisafs. Makes that gofer client use lisafs RPCs instead of p9 when lisafs is enabled. Implements the handlers for those methods in fsgofer. Fixes #5465 PiperOrigin-RevId: 398080310
2021-09-21Merge release-20210906.0-51-ge819029f3 (automated)gVisor bot
2021-09-20[lisa] Plumb lisafs through runsc.Ayush Ranjan
lisafs is only supported in VFS2. Added a runsc flag which enables lisafs. When the flag is enabled, the gofer process and the client communicate using lisafs protocol instead of 9P. Added a filesystem option in fsimpl/gofer which indicates if lisafs is being used. That will be used to gate lisafs on the gofer client. Note that this change does not make the gofer client use lisafs just yet. Updates #5465 PiperOrigin-RevId: 397917844
2021-09-09Merge release-20210830.0-27-g5e9c3a0b9 (automated)gVisor bot
2021-09-07Stub some memory control files.Rahat Mahmood
PiperOrigin-RevId: 395338926
2021-09-01Merge release-20210823.0-38-g5da4270a8 (automated)gVisor bot
2021-09-01Propagate vfs.MkdirOptions.ForSyntheticMountpoint to overlay copy-up.Jamie Liu
PiperOrigin-RevId: 394296687
2021-08-30Merge release-20210823.0-30-g574c6542a (automated)gVisor bot
2021-08-30Use specialFileFD handles in specialFileFD.Stat().Jamie Liu
PiperOrigin-RevId: 393831108
2021-08-27Merge release-20210816.0-52-gf7281c6cb (automated)gVisor bot
2021-08-27Fix lock order violations: mm.mappingMu > Task.mu.Nicolas Lacasse
Document this ordering in mm/mm.go. PiperOrigin-RevId: 393413203
2021-08-21Merge release-20210806.0-54-g0a15a216d (automated)gVisor bot
2021-08-20Allow gofer.specialFileFDs to be mmapped with a host FD.Jamie Liu
PiperOrigin-RevId: 392102898
2021-08-20Merge release-20210806.0-48-g3ba8df92a (automated)gVisor bot
2021-08-19Cache verity dentriesChong Cai
Add an LRU cache to cache verity dentries when ref count drop to 0. This way we don't need to hash and verify the previous opened files or directories each time. PiperOrigin-RevId: 391880157
2021-08-20Merge release-20210806.0-46-ga77eaf2a9 (automated)gVisor bot
2021-08-19Use MM-mapped I/O instead of buffered copies in gofer.specialFileFD.Jamie Liu
The rationale given for using buffered copies is still valid, but it's unclear whether holding MM locks or allocating buffers is better in practice, and the former is at least consistent with gofer.regularFileFD (and VFS1), making performance easier to reason about. PiperOrigin-RevId: 391877913
2021-08-14Merge release-20210806.0-29-gce58d71fd (automated)gVisor bot
2021-08-13[syserror] Remove pkg syserror.Zach Koopmans
Removes package syserror and moves still relevant code to either linuxerr or to syserr (to be later removed). Internal errors are converted from random types to *errors.Error types used in linuxerr. Internal errors are in linuxerr/internal.go. PiperOrigin-RevId: 390724202
2021-08-12Merge release-20210806.0-21-g02370bbd3 (automated)gVisor bot
2021-08-12[syserror] Convert remaining syserror definitions to linuxerr.Zach Koopmans
Convert remaining public errors (e.g. EINTR) from syserror to linuxerr. PiperOrigin-RevId: 390471763
2021-08-12Merge release-20210726.0-57-g3416a3db7 (automated)gVisor bot
2021-08-12Merge release-20210726.0-53-g4249ba850 (automated)gVisor bot
2021-08-11Do not clear merkle files when creating dentryChong Cai
The dentry for each file/directory can be created/destroyed multiple times during sandbox lifetime. We should not clear the Merkle file each time a dentry is created. PiperOrigin-RevId: 390277107
2021-08-12Merge release-20210726.0-52-g5456fa647 (automated)gVisor bot
2021-08-11Popluate verity directory children namesChong Cai
We were relying on children adding its name to parent's dentry to populate parent's children list. However, this may not work since the parent dentry could be destroyed if its reference count drops to zero. In that case, a new dentry will be created when enabling the parent and it does not contain the children names info. Therefore we need to populate the child names list again to avoid missing children in the directory. PiperOrigin-RevId: 390270227
2021-08-12Merge release-20210726.0-50-ga50596874 (automated)gVisor bot
2021-08-11Initial cgroupfs support for subcontainersRahat Mahmood
Allow creation and management of subcontainers through cgroupfs directory syscalls. Also add a mechanism to specify a default root container to start new jobs in. This implements the filesystem support for subcontainers, but doesn't implement hierarchical resource accounting or task migration. PiperOrigin-RevId: 390254870
2021-08-02Merge release-20210726.0-19-g4f6c1f309 (automated)gVisor bot
2021-08-01Merge pull request #6350 from sudo-sturbia:cgroupfsgVisor bot
PiperOrigin-RevId: 388129112
2021-07-28Merge release-20210720.0-44-g72c2b74ac (automated)gVisor bot
2021-07-28Add Uid/Gid/Groups fields to VFS2 /proc/[pid]/status.Jamie Liu
For comparison: ``` $ docker run --rm -it ubuntu:focal bash -c 'cat /proc/self/status' Name: cat Umask: 0022 State: R (running) Tgid: 1 Ngid: 0 Pid: 1 PPid: 0 TracerPid: 0 Uid: 0 0 0 0 Gid: 0 0 0 0 FDSize: 64 Groups: NStgid: 1 NSpid: 1 NSpgid: 1 NSsid: 1 VmPeak: 2660 kB VmSize: 2660 kB VmLck: 0 kB VmPin: 0 kB VmHWM: 528 kB VmRSS: 528 kB ... $ docker run --runtime=runsc-vfs2 --rm -it ubuntu:focal bash -c 'cat /proc/self/status' Name: cat State: R (running) Tgid: 1 Pid: 1 PPid: 0 TracerPid: 0 Uid: 0 0 0 0 Gid: 0 0 0 0 FDSize: 4 Groups: VmSize: 10708 kB VmRSS: 3124 kB VmData: 316 kB ... ``` Fixes #6374 PiperOrigin-RevId: 387465655
2021-07-28Merge release-20210720.0-40-g44efc282f (automated)gVisor bot
2021-07-28Lock gofer.dentry.dataMu before SetAttr RPC modifying file size.Jamie Liu
PiperOrigin-RevId: 387427887
2021-07-24Merge release-20210712.0-61-g9ba8c40a3 (automated)gVisor bot
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 13:18:38 +0000