Age | Commit message (Collapse) | Author |
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Split usermem package to help remove syserror dependency in go_marshal.
New hostarch package contains code not dependent on syserror.
PiperOrigin-RevId: 365651233
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Reported-by: syzbot+d54bc27a15aefe52c330@syzkaller.appspotmail.com
PiperOrigin-RevId: 356406975
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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
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Reported-by: syzbot+7406eef8247cb5a20855@syzkaller.appspotmail.com
PiperOrigin-RevId: 337974474
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PiperOrigin-RevId: 336822021
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- 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
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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
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context is passed to DecRef() and Release() which is
needed for SO_LINGER implementation.
PiperOrigin-RevId: 324672584
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Container restart test is disabled for VFS2 for now.
Updates #1487
PiperOrigin-RevId: 320296401
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Removed VDSO dependency on VFS1.
Resolves #2921
PiperOrigin-RevId: 320122176
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Closes #1623
PiperOrigin-RevId: 315681993
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PiperOrigin-RevId: 307680200
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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>
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- 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
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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
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PiperOrigin-RevId: 291745021
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PiperOrigin-RevId: 284191345
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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
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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
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Separate the handling of filenames and *fs.File objects in a more explicit way
for the sake of clarity.
PiperOrigin-RevId: 277344203
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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
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