30faf968b1
Currently, GroupIds (a method that returns supplementary group IDs for a user) is not implemented when cgo is not available, or osusergo build tag is set, or the underlying OS lacks getgrouplist(3). This adds a native Go implementation of GroupIds (which parses /etc/group) for such cases, together with some tests. This implementation is used: - when cgo is not available; - when osusergo build tag is set; - on AIX (which lacks getgrouplist(3)); - on Illumos (which only recently added getgrouplist(3)). This commit moves listgroups_unix.go to cgo_listgroups_unix.go, and adds listgroups_unix.go which implements the feature. NOTE the +build equivalent of go:build expression in listgroups_unix.go is not provided as it is going to be bulky. Go 1.17 already prefers go:build over +build, and no longer fail if a file contains go:build without +build, so the absence of +build is not a problem even with Go 1.17, and this code is targeted for Go 1.18. Updates #14709 Updates #30563 Change-Id: Icc95cda97ee3bcb03ef028b16eab7d3faba9ffab Reviewed-on: https://go-review.googlesource.com/c/go/+/330753 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> |
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