gvisor - Container Runtime Sandbox

Age	Commit message (Collapse)	Author
2019-01-09	Fix lock order violation.	Nicolas Lacasse
	overlayFileOperations.Readdir was holding overlay.copyMu while calling DirentReaddir, which then attempts to take take the corresponding Dirent.mu, causing a lock order violation. (See lock order documentation in fs/copy_up.go.) We only actually need to hold copyMu during readdirEntries(), so holding the lock is moved in there, thus avoiding the lock order violation. A new lock was added to protect overlayFileOperations.dirCache. We were inadvertently relying on copyMu to protect this. There is no reason it should not have its own lock. PiperOrigin-RevId: 228542473 Change-Id: I03c3a368c8cbc0b5a79d50cc486fc94adaddc1c2
2018-10-19	Use correct company name in copyright header	Ian Gudger
	PiperOrigin-RevId: 217951017 Change-Id: Ie08bf6987f98467d07457bcf35b5f1ff6e43c035
2018-09-18	Short-circuit Readdir calls on overlay files when the dirent is frozen.	Nicolas Lacasse
	If we have an overlay file whose corresponding Dirent is frozen, then we should not bother calling Readdir on the upper or lower files, since DirentReaddir will calculate children based on the frozen Dirent tree. A test was added that fails without this change. PiperOrigin-RevId: 213531215 Change-Id: I4d6c98f1416541a476a34418f664ba58f936a81d
2018-08-02	Automated rollback of changelist 207037226	Zhaozhong Ni
	PiperOrigin-RevId: 207125440 Change-Id: I6c572afb4d693ee72a0c458a988b0e96d191cd49
2018-08-01	Automated rollback of changelist 207007153	Michael Pratt
	PiperOrigin-RevId: 207037226 Change-Id: I8b5f1a056d4f3eab17846f2e0193bb737ecb5428
2018-08-01	stateify: convert all packages to use explicit mode.	Zhaozhong Ni
	PiperOrigin-RevId: 207007153 Change-Id: Ifedf1cc3758dc18be16647a4ece9c840c1c636c9
2018-07-19	ConfigureMMap on an overlay file delegates to the upper if there is no lower.	Nicolas Lacasse
	In the general case with an overlay, all mmap calls must go through the overlay, because in the event of a copy-up, the overlay needs to invalidate any previously-created mappings. If there if no lower file, however, there will never be a copy-up, so the overlay can delegate directly to the upper file in that case. This also allows us to correctly mmap /dev/zero when it is in an overlay. This file has special semantics which the overlay does not know about. In particular, it does not implement Mappable(), which (in the general case) the overlay uses to detect if a file is mappable or not. PiperOrigin-RevId: 205306743 Change-Id: I92331649aa648340ef6e65411c2b42c12fa69631
2018-05-07	Fix misspellings	Ian Gudger
	PiperOrigin-RevId: 195742598 Change-Id: Ibd4a8e4394e268c87700b6d1e50b4b37dfce5182
2018-04-28	Check in gVisor.	Googler
	PiperOrigin-RevId: 194583126 Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463