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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:19:13 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:19:13 +0000
commitccd992355df7192993c666236047820244914598 (patch)
treef00fea65147227b7743083c6148396f74cd66935 /src/cmd/go/internal/toolchain/umask_unix.go
parentInitial commit. (diff)
downloadgolang-1.21-ccd992355df7192993c666236047820244914598.tar.xz
golang-1.21-ccd992355df7192993c666236047820244914598.zip
Adding upstream version 1.21.8.upstream/1.21.8
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/cmd/go/internal/toolchain/umask_unix.go')
-rw-r--r--src/cmd/go/internal/toolchain/umask_unix.go28
1 files changed, 28 insertions, 0 deletions
diff --git a/src/cmd/go/internal/toolchain/umask_unix.go b/src/cmd/go/internal/toolchain/umask_unix.go
new file mode 100644
index 0000000..cbe4307
--- /dev/null
+++ b/src/cmd/go/internal/toolchain/umask_unix.go
@@ -0,0 +1,28 @@
+// Copyright 2023 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build darwin || freebsd || linux || netbsd || openbsd
+
+package toolchain
+
+import (
+ "io/fs"
+ "syscall"
+)
+
+// sysWriteBits determines which bits to OR into the mode to make a directory writable.
+// It must be called when there are no other file system operations happening.
+func sysWriteBits() fs.FileMode {
+ // Read current umask. There's no way to read it without also setting it,
+ // so set it conservatively and then restore the original one.
+ m := syscall.Umask(0o777)
+ syscall.Umask(m) // restore bits
+ if m&0o22 == 0o22 { // group and world are unwritable by default
+ return 0o700
+ }
+ if m&0o2 == 0o2 { // group is writable by default, but not world
+ return 0o770
+ }
+ return 0o777 // everything is writable by default
+}