[go] os: return an error in os.MkdirAll when user permissions are insufficient

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os: return an error in os.MkdirAll when user permissions are insufficient

Fixes #44848

Change-Id: I31d75110e03e2f694c17655d31c21c0fb874dd6e
GitHub-Last-Rev: c101296deae714fdd23adc89adae2d4adb3abd40
GitHub-Pull-Request: golang/go#44850
---
M src/os/path.go
1 file changed, 5 insertions(+), 0 deletions(-)

diff --git a/src/os/path.go b/src/os/path.go
index df87887..6443dac 100644
--- a/src/os/path.go
+++ b/src/os/path.go
@@ -25,6 +25,11 @@
 		return &PathError{Op: "mkdir", Path: path, Err: syscall.ENOTDIR}
 	}
 
+	// Break out early if any portion of the path is inaccessible to the invoking user
+	if err == syscall.EACCES {
+		return err
+	}
+
 	// Slow path: make sure parent exists and then call Mkdir for path.
 	i := len(path)
 	for i > 0 && IsPathSeparator(path[i-1]) { // Skip trailing path separator.

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Gerrit-Project: go

Gerrit-Branch: master

Gerrit-Change-Id: I31d75110e03e2f694c17655d31c21c0fb874dd6e

Gerrit-Change-Number: 299611

Gerrit-PatchSet: 1

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