std: fix readdir errors for solaris
#34776
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
The `use ffi::CStr` in `unix/thread.rs` was previously guarded, but now all platforms need it for `Thread::set_name()`. Newlib and Solaris do nothing here, as they have no way to set a thread name, but they still define the same method signature.
Like BSDs, Solaris maps `IPV6_ADD_MEMBERSHIP` and `IPV6_DROP_MEMBERSHIP` from `IPV6_JOIN_GROUP` and `IPV6_LEAVE_GROUP` respectively.
A `NULL` from `readdir` could be the end of stream or an error. The only way to know is to check `errno`, so it must be set to a known value first, like a 0 that POSIX will never use. This patch adds `set_errno`, uses it to clear the value before calling `readdir`, then checks it again after to see the reason for a `NULL`.
|
(rust_highfive has picked a reviewer for you, use r? to override) |
bors
added a commit
that referenced
this pull request
Jul 14, 2016
std: fix `readdir` errors for solaris A `NULL` from `readdir` could be the end of stream or an error. The only way to know is to check `errno`, so it must be set to a known value first, like a 0 that POSIX will never use. This currently only matters for solaris targets, as the other unix platforms are using `readdir_r` with a direct error return indication. However, this is getting deprecated (#34668) so they should all eventually switch to `readdir`. This PR adds `set_errno`, uses it to clear the value before calling `readdir`, then checks it again after to see the reason for a `NULL`. A few other small fixes are included just to get solaris compiling at all. I couldn't get cross-compilation completely going, so I don't have a good way to test this beyond a smoke-test cargo build of std. I'd appreciate input from someone more familiar with solaris -- cc @nbaksalyar?
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
A
NULLfromreaddircould be the end of stream or an error. The onlyway to know is to check
errno, so it must be set to a known value first,like a 0 that POSIX will never use.
This currently only matters for solaris targets, as the other unix platforms
are using
readdir_rwith a direct error return indication. However, this isgetting deprecated (#34668) so they should all eventually switch to
readdir.This PR adds
set_errno, uses it to clear the value before callingreaddir,then checks it again after to see the reason for a
NULL. A few other smallfixes are included just to get solaris compiling at all.
I couldn't get cross-compilation completely going, so I don't have a good way
to test this beyond a smoke-test cargo build of std. I'd appreciate input from
someone more familiar with solaris -- cc @nbaksalyar?