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PiperOrigin-RevId: 390318725
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Build constraints are now inferred from go:build directives rather than +build
directives. +build directives are still emitted in generated files as required
in Go 1.16 and earlier.
Note that go/build/constraint was added in Go 1.16, so gVisor now requires Go
1.16.
PiperOrigin-RevId: 387240779
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Stateify methods are always called without holding the appropriate
locks. The system is paused and we know there will be no mutations
when we call Save/Load, so this is perfectly safe. However, checklocks
can't know about this, and it will always complain.
Mark stateify generated methods that touch struct fields as
"checklocksignore" to avoid this.
PiperOrigin-RevId: 364610241
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PiperOrigin-RevId: 336340035
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This change also adds support to go_stateify for detecting an appropriate
receiver name, avoiding a large number of false positives.
PiperOrigin-RevId: 335994587
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Previously, it was not possible to encode/decode an object graph which
contained a pointer to a field within another type. This was because the
encoder was previously unable to disambiguate a pointer to an object and a
pointer within the object.
This CL remedies this by constructing an address map tracking the full memory
range object occupy. The encoded Refvalue message has been extended to allow
references to children objects within another object. Because the encoding
process may learn about object structure over time, we cannot encode any
objects under the entire graph has been generated.
This CL also updates the state package to use standard interfaces intead of
reflection-based dispatch in order to improve performance overall. This
includes a custom wire protocol to significantly reduce the number of
allocations and take advantage of structure packing.
As part of these changes, there are a small number of minor changes in other
places of the code base:
* The lists used during encoding are changed to use intrusive lists with the
objectEncodeState directly, which required that the ilist Len() method is
updated to work properly with the ElementMapper mechanism.
* A bug is fixed in the list code wherein Remove() called on an element that is
already removed can corrupt the list (removing the element if there's only a
single element). Now the behavior is correct.
* Standard error wrapping is introduced.
* Compressio was updated to implement the new wire.Reader and wire.Writer
inteface methods directly. The lack of a ReadByte and WriteByte caused issues
not due to interface dispatch, but because underlying slices for a Read or
Write call through an interface would always escape to the heap!
* Statify has been updated to support the new APIs.
See README.md for a description of how the new mechanism works.
PiperOrigin-RevId: 318010298
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This required minor restructuring of how system call tables were saved
and restored, but it makes way more sense this way.
Updates #2243
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This is to avoid conflicts with types that share the same
[short] package and type names, e.g. proc.smapsData exist
in pkg/sentry/fs/proc and pkg/sentry/fsimpl/proc.
Updates #1663
PiperOrigin-RevId: 294485146
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Note that files will need to be appropriately segmented in order for the
mechanism to work, in suffixes implying special tags. This only needs to happen
for cases where marshal or state structures are defined, which should be rare
and mostly architecture specific.
PiperOrigin-RevId: 293231579
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PiperOrigin-RevId: 286667216
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2 jobs were finished in this patch:
1, add a new attribute to specify the target platform.
2, check the source files that whether we can build this file for target platform by checking file name and build tags.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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Based on the guidelines at
https://opensource.google.com/docs/releasing/authors/.
1. $ rg -l "Google LLC" | xargs sed -i 's/Google LLC.*/The gVisor Authors./'
2. Manual fixup of "Google Inc" references.
3. Add AUTHORS file. Authors may request to be added to this file.
4. Point netstack AUTHORS to gVisor AUTHORS. Drop CONTRIBUTORS.
Fixes #209
PiperOrigin-RevId: 245823212
Change-Id: I64530b24ad021a7d683137459cafc510f5ee1de9
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PiperOrigin-RevId: 217951017
Change-Id: Ie08bf6987f98467d07457bcf35b5f1ff6e43c035
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PiperOrigin-RevId: 207303405
Change-Id: I17b6433963d78e3631a862b7ac80f566c8e7d106
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We have been unnecessarily creating too many savable types implicitly.
PiperOrigin-RevId: 206334201
Change-Id: Idc5a3a14bfb7ee125c4f2bb2b1c53164e46f29a8
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This also fixes the go_vet warning:
error: Fprintln call ends with newline (vet)
PiperOrigin-RevId: 195738471
Change-Id: Ic7a9df40eec1457ef03e6ee70872c497a676b53c
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PiperOrigin-RevId: 194583126
Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463
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