Summary:
This diff aims to solve `atomic_write` issues on Windows. Namely:
- `tempfile` left overs if temp files are not deleted on Drop.
- `tempfile` does unnecessary `chmod`.
- For mmap-ed files, it has to be deleted before `atomic_write`, causing
reader to have a chance to see inconsistent data.
This diff solves the above issues by:
- Use extra GC to clean up older files. Do not realy on successful `Drop`.
- Do not use `tempfile` and do not set permissions.
- Use a symlink so the symlink can still be atomic-replaced while the real
content is being mmaped.
Reviewed By: DurhamG
Differential Revision: D22225039
fbshipit-source-id: d45bb198a53f8beeef71798cdb9ae57f9b4b8cd3
Summary:
Make it possible to delete files that are mmap-ed. This avoids the extra
complexity of cleaning leftover files.
Reviewed By: xavierd
Differential Revision: D22168135
fbshipit-source-id: edb33a75638c668945feae49608c3fff25e742a4
Summary:
In some rare cases, we would have hgcache that contains broader permission than we are expecting. We shouldn't be fixing it if that's the case.
We also might be in situations where hgcache directory isn't entirely created by Mercurial, and the owner of the directory will be different than the process. This will cause the `chmod` call to fail with permission error. In that case, this will cause EdenFS to panic. This is undesirable. We should be handling this case more gracefully and let the original error populate.
Reviewed By: xavierd
Differential Revision: D21854542
fbshipit-source-id: e9d11399aeb40b375725b49f4bcd54050afdcbad
Summary:
Now that the shared directories are created with the right permissions, we
could still have some in the wild with the incorrect permissions. Let's make
sure that we fix these up.
Reviewed By: wez
Differential Revision: D21832436
fbshipit-source-id: d8ee40f61b16857d29e1360ec6df50b2a95ea7aa
Summary:
This is required for the shared cache to avoid permissions issues when multiple
users are trying to use it.
Reviewed By: fanzeyi
Differential Revision: D21830490
fbshipit-source-id: 3db0dbd674b6d2e10b9361ff3c3a668d046f5d78
Summary: Fix permission issues we are seeing with the latest Mercurial release.
Reviewed By: xavierd
Differential Revision: D21294499
fbshipit-source-id: bcfb13dd005258b2e3b74fa281dbd8df36133ef6
Summary:
When creates directories sometime we want to make sure other users within the same group have the write access to it to enable data sharing. Previously we rely on setting umask for the entire process to make sure the newly created directories have the correct permission bit. This is kind fragile and error-prone when running in a multi-thread environment.
This diff introduces an internal function `create_dir_with_mode` to create directory with specified permission mode. It first creates a temporary directory within the parent of the directory being created, setting up the correct permission bit, then attempts to rename the temporary directory to the desired name. This ensures that we never leave a directory without the correct permission in the place we need and without changing umask for the process.
Reviewed By: xavierd
Differential Revision: D21188903
fbshipit-source-id: 381bff7d3aaca097b9d50150e86cbbf70a90a0a5
Summary:
Also, add a util::path::strip_unc function that is more clear than the
normalize_for_display
Reviewed By: DurhamG
Differential Revision: D19595961
fbshipit-source-id: 330bcb708bf64320a3562d79db685d6cb1e14f16
Summary:
This diff replaces eden's dependencies on failure::Error with anyhow::Error.
Failure's error type requires all errors to have an implementation of failure's own failure::Fail trait in order for cause chains and backtraces to work. The necessary methods for this functionality have made their way into the standard library error trait, so modern error libraries build directly on std::error::Error rather than something like failure::Fail. Once we are no longer tied to failure 0.1's Fail trait, different parts of the codebase will be free to use any std::error::Error-based libraries they like while still working nicely together.
Reviewed By: xavierd
Differential Revision: D18576093
fbshipit-source-id: e2d862b659450f2969520d9b74877913fabb2e5d
Summary:
This diff is preparation for migrating off of failure::Fail / failure::Error for errors in favor of errors that implement std::error::Error. The Fallible terminology is unique to failure and in non-failure code we should be using Result<T>. To minimize the size of the eventual diff that removes failure, this codemod replaces all use of Fallible with Result by:
- In modules that do not use Result<T, E>, we import `failure::Fallible as Result`;
- In modules that use a mix of Result<T, E> and Fallible<T> (only 5) we define `type Result<T, E = failure::Error> = std::result::Result<T, E>` to allow both Result<T> and Result<T, E> to work simultaneously.
Reviewed By: Imxset21
Differential Revision: D18499758
fbshipit-source-id: 9f5a54c47f81fdeedbc6003cef42a1194eee55bf
Summary:
In preparation for merging fb-mercurial sources to the Eden repository,
move everything from the top-level directory into an `eden/scm`
subdirectory.
