Fetching user/group info causes race conditions #994
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@swift-ci please test |
parkera
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Oct 22, 2024
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| static func uidFor(name: String) -> uid_t? { |
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We don't have to block this PR on it, but I think the more canonically named version with be uid(forName name: String) (etc.)
parkera
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Oct 22, 2024
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@swift-ci please test |
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@swift-ci please test |
jmschonfeld
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Oct 23, 2024
* Avoid racy stdlib functions for fetching user/group info * Refactor naming * Fix build failure
jmschonfeld
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Oct 23, 2024
cthielen
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Nov 8, 2024
* Avoid racy stdlib functions for fetching user/group info * Refactor naming * Fix build failure
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We call a variety of functions like
getpwnam/getpwuid/getgrgidto fetch information about users and groups. These functions are not thread safe (causing crashes during execution of the functions) and also return inner pointers which can be overwritten out from under us. To resolve these race conditions, this switches to the_rvariants of the functions which use a client-supplied buffer for populating the result. I consolidated these calls into functions on thePlatformnamespace and updated call sites throughout swift-foundation to avoid the functions that can race.Resolves #982