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Run maint/add_warning
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- Replaced `once_cell::sync::Lazy` with `std::sync::LazyLock`.
Signed-off-by: hashcatHitman <[email protected]>
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Since Rust 1.66, std's default works properly for enums, provided that
the default variant is a unit.
Review all uses of `#[educe(default)]` on enums and replace them with
std where possible, which is most of them.
In 1.66 and later, std's `#[derive(Default)]` doesn't infer any
generic bounds on the derived impl, where it's an enum - since the
unit variant can always be constructed. So this change doesn't add
any generic bounds and is not API-visible.
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rustfmt has grown opinions about how let ... else ... ought to be
formatted. They don't always agree with our previous manual
decisions.
I think our policy is to always insist on rustfmt. When that version
of rustfmt hits stable, our CI will start to fail for everyone.
(Right now this discrepancy just causes trouble for contributors who
are using nightly by default.)
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We don't use OsString now except where it appears in our public API,
or where we get it from std::env.
Moving the `use` statements into the use sites enabled me to see
that I had found all the places I wanted to change.
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This function is actually (properly) fallible now.
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MockPwdGrpProvider has internal mutability and is Sync, so its add
functions take &self.
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This gets rid of some unsafe code here, with doubtful error handling,
in favour of the unit-tested version in pwd-grp.
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users is unmaintained. pwd-grp is the crate I have just written to
replace it. In this commit:
Change the cargo dependency and imports.
Replace the cacheing arrangements. users has a built-in cache;
pwd-grp doesn't. Now, instead of cashing individual lookups, we cache
the trusted user and trusted gid calculation results.
This saves on some syscalls, and is also more convenient to write.
(Mocking is still done via the dependency.)
Many systematic consequential changes of details:
* The entrypoint names to the library are different:
pwd-grp uses the names of the corresponding Unix functions.
* pwd-grp's returned structs are transparent, so we don't
call accessors for .uid(), .name(), etc.
* pwd-grp's methods are much more often fallible
(returning io::Result<Option<...>)
* We're using the non-UTF-8 pwd-grp API, which means we must
use turbofish syntax in some places.
* The mocking API is a bit different.
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This allows us to change a number of trait bounds in advance, reducing
noise in the next commit.
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Add some wrapper functions for convenience.
The pwd-grp crate has a richer and more faithful, but not so
convenient, way of creating dummy user/group entries. Also the type
names are all going to change.
Doing this now reduces churn.
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The actual underlying operations here *are* fallible.
The `users` crate hides those errors in several cases.
(Failures are very rare (at least unless NIS is involved), so this is
not of much practical import, but it's going to be necessary when we
use the more careful pwd-grp crate.
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This panics on error, and we're fine with a panic on misbehavior in
tests.
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This is precisely the result of running the rune in
maint/adhoc-add-lint-blocks.
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fs-mistrust: add getegid() to getgrouplist() output.
Closes #487
See merge request tpo/core/arti!548
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This fixes a unit test failure in weird environments (like some
containers) where the current effective GID is not included in the
list of current groups.
Closes #487.
Bug reported by @sjm217.
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It turns out that the `toml` crate can't handle OsString, since
`toml` doesn't support serialize_newtype_variant, and the `serde`
crate tries to serialize OsString using that method.
In this commit we document that limitation, and test that we can at
least round-trip through json.
Found by inspecting test coverage.
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We support all of the following (in TOML notation):
```
user = "rose" # by name
user = 413 # by ID
user = false # no user
user = ":current" # A 'special' user.
user = { name: "rose" }
user = { id: 413 }
user = { special: ":none" }
user = { special: ":current" }
```
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The Group and User (de)serialization is pretty ugly, and I can't
vouch for the correcness of MistrustBuilder. I will seek feedback
before I proceed.
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This will help make the actual configuration more serializable,
I hope.
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This is an approximately minimal revision to get Builder in place;
subsequent commits will clean up the API.
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Some of our builders put root into gid 0, but getgroups() doesn't
actually give any result.
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This required a bit of poking through the `users` crate, to mess
with the user and group dbs. The original goal was to "trust the
group with the same name as us", but it turned into a bit of a
production, since:
* We want to take our own name from $USER, assuming that matches
our uid. (Otherwise we want to ask getpwuid_r().)
* We only want to trust the group if we are actually a member of
that group.
* We want to cache this information.
* We want to test this code.
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