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2021-02-09Merge release-20210201.0-59-gbf4968e17 (automated)gVisor bot
2021-02-08exec: don't panic if an elf file is malformedAndrei Vagin
Reported-by: syzbot+d54bc27a15aefe52c330@syzkaller.appspotmail.com PiperOrigin-RevId: 356406975
2021-01-13Merge release-20201216.0-94-ge74aa25e2 (automated)gVisor bot
2021-01-12Merge release-20201216.0-86-ga20da7082 (automated)gVisor bot
2021-01-11Fix Go branch for arm64.Adin Scannell
This requires several changes: * Templates must preserve relevant tags. * Pagetables templates are split into two targets, each preserving tags. * The binary VDSO is similarly split into two targets, with some juggling. * The top level tools/go_branch.sh now does a crossbuild of ARM64 as well, and checks and merges the results of the two branches together. Fixes #5178 PiperOrigin-RevId: 351304330
2021-01-08Merge release-20201216.0-72-gbf343394d (automated)gVisor bot
2020-10-20Merge release-20201005.0-108-g34a6e9576 (automated)gVisor bot
2020-10-19loader/elf: validate file offsetAndrei Vagin
Reported-by: syzbot+7406eef8247cb5a20855@syzkaller.appspotmail.com PiperOrigin-RevId: 337974474
2020-10-13Merge release-20200928.0-98-gfc7df5322 (automated)gVisor bot
2020-10-13Don't leak VDSO mappings.Dean Deng
PiperOrigin-RevId: 336822021
2020-10-08Merge release-20200928.0-66-ga55bd73d4 (automated)gVisor bot
2020-09-30Merge release-20200921.0-74-g387501219 (automated)gVisor bot
2020-09-29Replace remaining uses of reflection-based marshalling.Rahat Mahmood
- Rewrite arch.Stack.{Push,Pop}. For the most part, stack now implements marshal.CopyContext and can be used as the target of marshal operations. Stack.Push had some extra logic for automatically null-terminating slices. This was only used for two specific types of slices, and is now handled explicitly. - Delete usermem.CopyObject{In,Out}. - Replace most remaining uses of the encoding/binary package with go-marshal. Most of these were using the binary package to compute the size of a struct, which go-marshal can directly replace. ~3 uses of the binary package remain. These aren't reasonably replaceable by go-marshal: for example one use is to construct the syscall trampoline for systrap. - Fill out remaining convenience wrappers in the primitive package. PiperOrigin-RevId: 334502375
2020-08-20Merge release-20200810.0-74-g129018ab3 (automated)gVisor bot
2020-08-20Consistent precondition formattingMichael Pratt
Our "Preconditions:" blocks are very useful to determine the input invariants, but they are bit inconsistent throughout the codebase, which makes them harder to read (particularly cases with 5+ conditions in a single paragraph). I've reformatted all of the cases to fit in simple rules: 1. Cases with a single condition are placed on a single line. 2. Cases with multiple conditions are placed in a bulleted list. This format has been added to the style guide. I've also mentioned "Postconditions:", though those are much less frequently used, and all uses already match this style. PiperOrigin-RevId: 327687465
2020-08-03Merge release-20200622.1-313-gb2ae7ea1b (automated)gVisor bot
2020-08-03Plumbing context.Context to DecRef() and Release().Nayana Bidari
context is passed to DecRef() and Release() which is needed for SO_LINGER implementation. PiperOrigin-RevId: 324672584
2020-07-24Merge release-20200622.1-219-gea0342d47 (automated)gVisor bot
2020-07-09Merge release-20200622.1-85-gc4815af94 (automated)gVisor bot
2020-07-08Add shared mount hints to VFS2Fabricio Voznika
Container restart test is disabled for VFS2 for now. Updates #1487 PiperOrigin-RevId: 320296401
2020-07-08Merge release-20200622.1-78-gefa2615eb (automated)gVisor bot
2020-07-07[vfs2] Remove VFS1 usage in VDSO.Ayush Ranjan
Removed VDSO dependency on VFS1. Resolves #2921 PiperOrigin-RevId: 320122176
2020-06-24Merge release-20200608.0-119-g364ac92ba (automated)gVisor bot
2020-06-10Merge release-20200522.0-113-g203dc121f (automated)gVisor bot
2020-06-10Redirect TODOs to more specific issuesFabricio Voznika
Closes #1623 PiperOrigin-RevId: 315681993
2020-05-27Merge release-20200518.0-45-g0bc022b7 (automated)gVisor bot
2020-04-21Merge release-20200323.0-206-geba0866 (automated)gVisor bot
2020-04-21Merge pull request #1818 from lubinszARM:pr_signal_1gVisor bot
PiperOrigin-RevId: 307680200
2020-04-17Arm64: VDSO support for signalBin Lu
The vdso is enabled, so we can use the sigreturn trampolines the vdso provides in arch module. Signed-off-by: Bin Lu <bin.lu@arm.com>
2020-02-14Merge release-20200211.0-17-g4075de1 (automated)gVisor bot
2020-02-14Plumb VFS2 inside the SentrygVisor bot
- 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
2020-02-11Merge release-20200127.0-130-g9be46e5 (automated)gVisor bot
2020-01-27Merge release-20200115.0-110-g0e2f1b7 (automated)gVisor bot
2020-01-27Update package locations.Adin Scannell
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
2020-01-27Standardize on tools directory.Adin Scannell
PiperOrigin-RevId: 291745021
2020-01-22Merge release-20200115.0-71-g1599923 (automated)gVisor bot
2019-12-06Merge release-20191129.0-9-gf8bb3f7 (automated)gVisor bot
2019-12-06Document ELF PT_LOAD difference from LinuxMichael Pratt
PiperOrigin-RevId: 284191345
2019-11-18Merge release-20191114.0-13-g235a96c (automated)gVisor bot
2019-11-13Fix some build errors on arm64.Haibo Xu
Initialize the VDSO "os" and "arch" fields explicitly, or the VDSO load process would failed on arm64 platform. Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: Ic6768df88e43cd7c7956eb630511672ae11ac52f
2019-10-29Merge release-20190806.1-341-g38330e9 (automated)gVisor bot
2019-10-29Update symlink traversal limit when resolving interpreter path.Dean Deng
When execveat is called on an interpreter script, the symlink count for resolving the script path should be separate from the count for resolving the the corresponding interpreter. An ELOOP error should not occur if we do not hit the symlink limit along any individual path, even if the total number of symlinks encountered exceeds the limit. Closes #574 PiperOrigin-RevId: 277358474
2019-10-29Merge release-20190806.1-339-g2e00771 (automated)gVisor bot
2019-10-29Refactor logic for loadExecutable.Dean Deng
Separate the handling of filenames and *fs.File objects in a more explicit way for the sake of clarity. PiperOrigin-RevId: 277344203
2019-10-29Merge release-20190806.1-333-g29273b0 (automated)gVisor bot
2019-10-29Disallow execveat on interpreter scripts with fd opened with O_CLOEXEC.Dean Deng
When an interpreter script is opened with O_CLOEXEC and the resulting fd is passed into execveat, an ENOENT error should occur (the script would otherwise be inaccessible to the interpreter). This matches the actual behavior of Linux's execveat. PiperOrigin-RevId: 277306680
2019-10-26Merge release-20190806.1-329-g1c480ab (automated)gVisor bot
2019-10-25Aggregate arguments for loading executables into a single struct.Dean Deng
This change simplifies the function signatures of functions related to loading executables, such as LoadTaskImage, Load, loadBinary. PiperOrigin-RevId: 276821187
2019-10-24Merge release-20190806.1-318-gd9fd536 (automated)gVisor bot
2019-10-24Handle AT_SYMLINK_NOFOLLOW flag for execveat.Dean Deng
PiperOrigin-RevId: 276441249
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