a3a584e4ab
Since all the platforms now support O_DIRECTORY flag for open, it can be used to (together with O_NOFOLLOW) to ensure we open a directory, thus eliminating the need to call stat before open. This fixes the symlink race, when a directory is replaced by a symlink in between stat and open calls. While at it, rename openFdAt to openDirAt, because this function is (and was) meant for directories only. NOTE Solaris supports O_DIRECTORY since before Solaris 11 (which is the only version Go supports since supported version now), and Illumos always had it. The only missing piece was O_DIRECTORY flag value, which is taken from golang.org/x/sys/unix. Updates #52745. Change-Id: Ic1111d688eebc8804a87d39d3261c2a6eb33f176 Reviewed-on: https://go-review.googlesource.com/c/go/+/588495 Reviewed-by: Ian Lance Taylor <iant@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Aleksa Sarai <cyphar@cyphar.com> Reviewed-by: Than McIntosh <thanm@google.com> Auto-Submit: Ian Lance Taylor <iant@google.com> |
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The Go Programming Language
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