unshare: export rootless GID

Signed-off-by: Giuseppe Scrivano <[email protected]>
containers · Nov 7, 2023 · 023ae7e · 023ae7e
1 parent ddc5840
commit 023ae7e
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Showing 3 changed files with 20 additions and 0 deletions.
diff --git a/pkg/unshare/unshare_darwin.go b/pkg/unshare/unshare_darwin.go
@@ -25,6 +25,11 @@ func GetRootlessUID() int {
 	return os.Getuid()
 }
 
+// GetRootlessGID returns the GID of the user in the parent userNS
+func GetRootlessGID() int {
+	return os.Getgid()
+}
+
 // RootlessEnv returns the environment settings for the rootless containers
 func RootlessEnv() []string {
 	return append(os.Environ(), UsernsEnvName+"=")

diff --git a/pkg/unshare/unshare_linux.go b/pkg/unshare/unshare_linux.go
@@ -441,6 +441,16 @@ func GetRootlessUID() int {
 	return os.Getuid()
 }
 
+// GetRootlessGID returns the GID of the user in the parent userNS
+func GetRootlessGID() int {
+	gidEnv := getenv("_CONTAINERS_ROOTLESS_GID")
+	if gidEnv != "" {
+		u, _ := strconv.Atoi(gidEnv)
+		return u
+	}
+	return os.Getgid()
+}
+
 // RootlessEnv returns the environment settings for the rootless containers
 func RootlessEnv() []string {
 	return append(os.Environ(), UsernsEnvName+"=done")

diff --git a/pkg/unshare/unshare_unsupported.go b/pkg/unshare/unshare_unsupported.go
@@ -25,6 +25,11 @@ func GetRootlessUID() int {
 	return os.Getuid()
 }
 
+// GetRootlessGID returns the GID of the user in the parent userNS
+func GetRootlessGID() int {
+	return os.Getgid()
+}
+
 // RootlessEnv returns the environment settings for the rootless containers
 func RootlessEnv() []string {
 	return append(os.Environ(), UsernsEnvName+"=")