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Adjust Behaviour of read_dir and ReadDir in Windows Implementation: Check Whether Path to Search In Exists #120373

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merged 5 commits into from Jan 29, 2024

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@HTGAzureX1212 HTGAzureX1212 commented Jan 26, 2024

This pull request changes the read_dir function's and the ReadDir structure's internal implementations for the Windows operating system to make its behaviour more accurate.

It should be noted that ERROR_FILE_NOT_FOUND is returned by the FindFirstFileW function when no matching files can be found, not necessarily that the path to search in does not exist in the first place. Therefore, directly returning the "The system cannot find the file specified." may not be accurate.

An extra check for whether the path to search in exists is added, returning a constructed ReadDir iterator with its handle being an INVALID_HANDLE_VALUE returned by the FindFirstFileW function if ERROR_FILE_NOT_FOUND is indeed the last OS error. The ReadDir implementation for the Windows operating system is correspondingly updated to always return None if the handle it has is an INVALID_HANDLE_VALUE which can only be the case if and only if specifically constructed by the read_dir function in the aforementioned conditions.

It should also be noted that FindFirstFileW would have returned ERROR_PATH_NOT_FOUND if the path to search in does not exist in the first place.

Presumably fixes #120040.

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rustbot commented Jan 26, 2024

r? @ChrisDenton

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@rustbot rustbot added O-windows Operating system: Windows S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Jan 26, 2024
@HTGAzureX1212 HTGAzureX1212 changed the title Adjust Behaviour of read_dir in Windows: Implementation Check Whether Path Exists Adjust Behaviour of read_dir in Windows Implementation: Check Whether Path to Search In Exists Jan 26, 2024
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Thanks for working on this!

library/std/src/sys/pal/windows/fs.rs Outdated Show resolved Hide resolved
library/std/src/sys/pal/windows/fs.rs Outdated Show resolved Hide resolved
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@HTGAzureX1212 HTGAzureX1212 changed the title Adjust Behaviour of read_dir in Windows Implementation: Check Whether Path to Search In Exists Adjust Behaviour of read_dir and ReadDir in Windows Implementation: Check Whether Path to Search In Exists Jan 27, 2024
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Look good to me, thanks again!

@bors r+ rollup

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bors commented Jan 27, 2024

📌 Commit 018bf30 has been approved by ChrisDenton

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jan 27, 2024
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Jan 27, 2024
…120040, r=ChrisDenton

Adjust Behaviour of `read_dir` and `ReadDir` in Windows Implementation: Check Whether Path to Search In Exists

This pull request changes the `read_dir` function's and the `ReadDir` structure's internal implementations for the Windows operating system to make its behaviour more accurate.

It should be noted that `ERROR_FILE_NOT_FOUND` is returned by the `FindFirstFileW` function when *no matching files can be found*, not necessarily that the path to search in does not exist in the first place. Therefore, directly returning the "The system cannot find the file specified." may not be accurate.

An extra check for whether the path to search in exists is added, returning a constructed `ReadDir` iterator with its handle being an `INVALID_HANDLE_VALUE` returned by the `FindFirstFileW` function if `ERROR_FILE_NOT_FOUND` is indeed the last OS error. The `ReadDir` implementation for the Windows operating system is correspondingly updated to always return `None` if the handle it has is an `INVALID_HANDLE_VALUE` which can only be the case if and only if specifically constructed by the `read_dir` function in the aforementioned conditions.

It should also be noted that `FindFirstFileW` would have returned `ERROR_PATH_NOT_FOUND` if the path to search in does not exist in the first place.

Presumably fixes rust-lang#120040.
bors added a commit to rust-lang-ci/rust that referenced this pull request Jan 27, 2024
…iaskrgr

Rollup of 7 pull requests

Successful merges:

 - rust-lang#120172 (bootstrap: add more unit tests)
 - rust-lang#120266 (Improve documentation for [A]Rc::into_inner)
 - rust-lang#120358 (Bump Fuchsia, build tests, and use 8 core bots)
 - rust-lang#120373 (Adjust Behaviour of `read_dir` and `ReadDir` in Windows Implementation: Check Whether Path to Search In Exists)
 - rust-lang#120376 (Update codegen test for LLVM 18)
 - rust-lang#120420 (Stop using derivative in rustc_pattern_analysis)
 - rust-lang#120425 (Remove unnecessary unit returns in query declarations)

r? `@ghost`
`@rustbot` modify labels: rollup
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Jan 27, 2024
…120040, r=ChrisDenton

Adjust Behaviour of `read_dir` and `ReadDir` in Windows Implementation: Check Whether Path to Search In Exists

This pull request changes the `read_dir` function's and the `ReadDir` structure's internal implementations for the Windows operating system to make its behaviour more accurate.

It should be noted that `ERROR_FILE_NOT_FOUND` is returned by the `FindFirstFileW` function when *no matching files can be found*, not necessarily that the path to search in does not exist in the first place. Therefore, directly returning the "The system cannot find the file specified." may not be accurate.

An extra check for whether the path to search in exists is added, returning a constructed `ReadDir` iterator with its handle being an `INVALID_HANDLE_VALUE` returned by the `FindFirstFileW` function if `ERROR_FILE_NOT_FOUND` is indeed the last OS error. The `ReadDir` implementation for the Windows operating system is correspondingly updated to always return `None` if the handle it has is an `INVALID_HANDLE_VALUE` which can only be the case if and only if specifically constructed by the `read_dir` function in the aforementioned conditions.

It should also be noted that `FindFirstFileW` would have returned `ERROR_PATH_NOT_FOUND` if the path to search in does not exist in the first place.

Presumably fixes rust-lang#120040.
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Jan 27, 2024
…120040, r=ChrisDenton

Adjust Behaviour of `read_dir` and `ReadDir` in Windows Implementation: Check Whether Path to Search In Exists

This pull request changes the `read_dir` function's and the `ReadDir` structure's internal implementations for the Windows operating system to make its behaviour more accurate.

It should be noted that `ERROR_FILE_NOT_FOUND` is returned by the `FindFirstFileW` function when *no matching files can be found*, not necessarily that the path to search in does not exist in the first place. Therefore, directly returning the "The system cannot find the file specified." may not be accurate.

An extra check for whether the path to search in exists is added, returning a constructed `ReadDir` iterator with its handle being an `INVALID_HANDLE_VALUE` returned by the `FindFirstFileW` function if `ERROR_FILE_NOT_FOUND` is indeed the last OS error. The `ReadDir` implementation for the Windows operating system is correspondingly updated to always return `None` if the handle it has is an `INVALID_HANDLE_VALUE` which can only be the case if and only if specifically constructed by the `read_dir` function in the aforementioned conditions.

It should also be noted that `FindFirstFileW` would have returned `ERROR_PATH_NOT_FOUND` if the path to search in does not exist in the first place.

Presumably fixes rust-lang#120040.
bors added a commit to rust-lang-ci/rust that referenced this pull request Jan 28, 2024
…iaskrgr

Rollup of 8 pull requests

Successful merges:

 - rust-lang#116677 (References refer to allocated objects)
 - rust-lang#120232 (Add support for custom JSON targets when using build-std.)
 - rust-lang#120266 (Improve documentation for [A]Rc::into_inner)
 - rust-lang#120358 (Bump Fuchsia, build tests, and use 8 core bots)
 - rust-lang#120373 (Adjust Behaviour of `read_dir` and `ReadDir` in Windows Implementation: Check Whether Path to Search In Exists)
 - rust-lang#120402 (Make the coroutine def id of an async closure the child of the closure def id)
 - rust-lang#120420 (Stop using derivative in rustc_pattern_analysis)
 - rust-lang#120425 (Remove unnecessary unit returns in query declarations)

r? `@ghost`
`@rustbot` modify labels: rollup
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Jan 28, 2024
…120040, r=ChrisDenton

Adjust Behaviour of `read_dir` and `ReadDir` in Windows Implementation: Check Whether Path to Search In Exists

This pull request changes the `read_dir` function's and the `ReadDir` structure's internal implementations for the Windows operating system to make its behaviour more accurate.

It should be noted that `ERROR_FILE_NOT_FOUND` is returned by the `FindFirstFileW` function when *no matching files can be found*, not necessarily that the path to search in does not exist in the first place. Therefore, directly returning the "The system cannot find the file specified." may not be accurate.

An extra check for whether the path to search in exists is added, returning a constructed `ReadDir` iterator with its handle being an `INVALID_HANDLE_VALUE` returned by the `FindFirstFileW` function if `ERROR_FILE_NOT_FOUND` is indeed the last OS error. The `ReadDir` implementation for the Windows operating system is correspondingly updated to always return `None` if the handle it has is an `INVALID_HANDLE_VALUE` which can only be the case if and only if specifically constructed by the `read_dir` function in the aforementioned conditions.

It should also be noted that `FindFirstFileW` would have returned `ERROR_PATH_NOT_FOUND` if the path to search in does not exist in the first place.

Presumably fixes rust-lang#120040.
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Jan 28, 2024
…120040, r=ChrisDenton

Adjust Behaviour of `read_dir` and `ReadDir` in Windows Implementation: Check Whether Path to Search In Exists

This pull request changes the `read_dir` function's and the `ReadDir` structure's internal implementations for the Windows operating system to make its behaviour more accurate.

It should be noted that `ERROR_FILE_NOT_FOUND` is returned by the `FindFirstFileW` function when *no matching files can be found*, not necessarily that the path to search in does not exist in the first place. Therefore, directly returning the "The system cannot find the file specified." may not be accurate.

An extra check for whether the path to search in exists is added, returning a constructed `ReadDir` iterator with its handle being an `INVALID_HANDLE_VALUE` returned by the `FindFirstFileW` function if `ERROR_FILE_NOT_FOUND` is indeed the last OS error. The `ReadDir` implementation for the Windows operating system is correspondingly updated to always return `None` if the handle it has is an `INVALID_HANDLE_VALUE` which can only be the case if and only if specifically constructed by the `read_dir` function in the aforementioned conditions.

It should also be noted that `FindFirstFileW` would have returned `ERROR_PATH_NOT_FOUND` if the path to search in does not exist in the first place.

Presumably fixes rust-lang#120040.
bors added a commit to rust-lang-ci/rust that referenced this pull request Jan 28, 2024
…iaskrgr

Rollup of 6 pull requests

Successful merges:

 - rust-lang#116677 (References refer to allocated objects)
 - rust-lang#118533 (Suppress unhelpful diagnostics for unresolved top level attributes)
 - rust-lang#120232 (Add support for custom JSON targets when using build-std.)
 - rust-lang#120238 (Always check the result of `pthread_mutex_lock`)
 - rust-lang#120266 (Improve documentation for [A]Rc::into_inner)
 - rust-lang#120373 (Adjust Behaviour of `read_dir` and `ReadDir` in Windows Implementation: Check Whether Path to Search In Exists)

r? `@ghost`
`@rustbot` modify labels: rollup
bors added a commit to rust-lang-ci/rust that referenced this pull request Jan 29, 2024
Rollup of 9 pull requests

Successful merges:

 - rust-lang#116677 (References refer to allocated objects)
 - rust-lang#118625 (Improve handling of expressions in patterns)
 - rust-lang#120266 (Improve documentation for [A]Rc::into_inner)
 - rust-lang#120373 (Adjust Behaviour of `read_dir` and `ReadDir` in Windows Implementation: Check Whether Path to Search In Exists)
 - rust-lang#120390 (Borrow check inline const patterns)
 - rust-lang#120420 (Stop using derivative in rustc_pattern_analysis)
 - rust-lang#120428 (hir: Two preparatory changes for rust-lang#120206)
 - rust-lang#120453 (Fix incorrect comment in normalize_newlines)
 - rust-lang#120462 (Clean dead code)

r? `@ghost`
`@rustbot` modify labels: rollup
bors added a commit to rust-lang-ci/rust that referenced this pull request Jan 29, 2024
Rollup of 9 pull requests

Successful merges:

 - rust-lang#116677 (References refer to allocated objects)
 - rust-lang#118625 (Improve handling of expressions in patterns)
 - rust-lang#120266 (Improve documentation for [A]Rc::into_inner)
 - rust-lang#120373 (Adjust Behaviour of `read_dir` and `ReadDir` in Windows Implementation: Check Whether Path to Search In Exists)
 - rust-lang#120390 (Borrow check inline const patterns)
 - rust-lang#120420 (Stop using derivative in rustc_pattern_analysis)
 - rust-lang#120428 (hir: Two preparatory changes for rust-lang#120206)
 - rust-lang#120453 (Fix incorrect comment in normalize_newlines)
 - rust-lang#120462 (Clean dead code)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit d04bede into rust-lang:master Jan 29, 2024
11 checks passed
@rustbot rustbot added this to the 1.77.0 milestone Jan 29, 2024
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Jan 29, 2024
Rollup merge of rust-lang#120373 - HTGAzureX1212:HTGAzureX1212/issue-120040, r=ChrisDenton

Adjust Behaviour of `read_dir` and `ReadDir` in Windows Implementation: Check Whether Path to Search In Exists

This pull request changes the `read_dir` function's and the `ReadDir` structure's internal implementations for the Windows operating system to make its behaviour more accurate.

It should be noted that `ERROR_FILE_NOT_FOUND` is returned by the `FindFirstFileW` function when *no matching files can be found*, not necessarily that the path to search in does not exist in the first place. Therefore, directly returning the "The system cannot find the file specified." may not be accurate.

An extra check for whether the path to search in exists is added, returning a constructed `ReadDir` iterator with its handle being an `INVALID_HANDLE_VALUE` returned by the `FindFirstFileW` function if `ERROR_FILE_NOT_FOUND` is indeed the last OS error. The `ReadDir` implementation for the Windows operating system is correspondingly updated to always return `None` if the handle it has is an `INVALID_HANDLE_VALUE` which can only be the case if and only if specifically constructed by the `read_dir` function in the aforementioned conditions.

It should also be noted that `FindFirstFileW` would have returned `ERROR_PATH_NOT_FOUND` if the path to search in does not exist in the first place.

Presumably fixes rust-lang#120040.
@HTGAzureX1212 HTGAzureX1212 deleted the HTGAzureX1212/issue-120040 branch January 30, 2024 04:55
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Windows: std::fs::read_dir returns NotFound for empty volume
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