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authorqmuntal <quimmuntal@gmail.com>2024-02-28 16:06:04 +0100
committerQuim Muntal <quimmuntal@gmail.com>2024-03-04 18:59:50 +0000
commit7986e26a39e9df870886a9933107372f4e16ea4c (patch)
treedcda4d454d0487d63d6a4902042aaf71751fd9ba /src/runtime/metrics/doc.go
parent90796f44d5d10163196c6116ae667eddba8b06c0 (diff)
downloadgo-7986e26a39e9df870886a9933107372f4e16ea4c.tar.xz
os: don't treat mount points as symbolic links
This CL changes the behavior of os.Lstat to stop setting the os.ModeSymlink type mode bit for mount points on Windows. As a result, filepath.EvalSymlinks no longer evaluates mount points, which was the cause of many inconsistencies and bugs. Additionally, os.Lstat starts setting the os.ModeIrregular type mode bit for all reparse tags on Windows, except for those that are explicitly supported by the os package, which, since this CL, doesn't include mount points. This helps to identify files that need special handling outside of the os package. This behavior is controlled by the `winsymlink` GODEBUG setting. For Go 1.23, it defaults to `winsymlink=1`. Previous versions default to `winsymlink=0`. Fixes #39786 Fixes #40176 Fixes #61893 Updates #63703 Updates #40180 Updates #63429 Cq-Include-Trybots: luci.golang.try:gotip-windows-amd64-longtest,gotip-windows-arm64 Change-Id: I2e7372ab8862f5062667d30db6958d972bce5407 Reviewed-on: https://go-review.googlesource.com/c/go/+/565136 Reviewed-by: Bryan Mills <bcmills@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Michael Knyszek <mknyszek@google.com>
Diffstat (limited to 'src/runtime/metrics/doc.go')
-rw-r--r--src/runtime/metrics/doc.go4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/runtime/metrics/doc.go b/src/runtime/metrics/doc.go
index fb2f44da29..2a1a3055fa 100644
--- a/src/runtime/metrics/doc.go
+++ b/src/runtime/metrics/doc.go
@@ -319,6 +319,10 @@ Below is the full list of supported metrics, ordered lexicographically.
The number of non-default behaviors executed by the crypto/tls
package due to a non-default GODEBUG=tlsunsafeekm=... setting.
+ /godebug/non-default-behavior/winsymlink:events
+ The number of non-default behaviors executed by the os package
+ due to a non-default GODEBUG=winsymlink=... setting.
+
/godebug/non-default-behavior/x509sha1:events
The number of non-default behaviors executed by the crypto/x509
package due to a non-default GODEBUG=x509sha1=... setting.