From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 19 Dec 2023 12:12:14 +0000 (+0100)
Subject: varlink: add varlink_get_peer_gid() helper
X-Git-Tag: v256-rc1~283^2~30
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=52bd61373b89bb6b458f5020b23a92253b12f235;p=thirdparty%2Fsystemd.git

varlink: add varlink_get_peer_gid() helper
---

diff --git a/src/shared/varlink.c b/src/shared/varlink.c
index d4072ec3982..1bfa4c70818 100644
--- a/src/shared/varlink.c
+++ b/src/shared/varlink.c
@@ -2807,12 +2807,29 @@ int varlink_get_peer_uid(Varlink *v, uid_t *ret) {
                 return varlink_log_errno(v, r, "Failed to acquire credentials: %m");
 
         if (!uid_is_valid(v->ucred.uid))
-                return varlink_log_errno(v, SYNTHETIC_ERRNO(ENODATA), "Peer uid is invalid.");
+                return varlink_log_errno(v, SYNTHETIC_ERRNO(ENODATA), "Peer UID is invalid.");
 
         *ret = v->ucred.uid;
         return 0;
 }
 
+int varlink_get_peer_gid(Varlink *v, gid_t *ret) {
+        int r;
+
+        assert_return(v, -EINVAL);
+        assert_return(ret, -EINVAL);
+
+        r = varlink_acquire_ucred(v);
+        if (r < 0)
+                return varlink_log_errno(v, r, "Failed to acquire credentials: %m");
+
+        if (!gid_is_valid(v->ucred.gid))
+                return varlink_log_errno(v, SYNTHETIC_ERRNO(ENODATA), "Peer GID is invalid.");
+
+        *ret = v->ucred.gid;
+        return 0;
+}
+
 int varlink_get_peer_pid(Varlink *v, pid_t *ret) {
         int r;
 
diff --git a/src/shared/varlink.h b/src/shared/varlink.h
index db7227b2154..c8639f4d7f0 100644
--- a/src/shared/varlink.h
+++ b/src/shared/varlink.h
@@ -173,6 +173,7 @@ void* varlink_set_userdata(Varlink *v, void *userdata);
 void* varlink_get_userdata(Varlink *v);
 
 int varlink_get_peer_uid(Varlink *v, uid_t *ret);
+int varlink_get_peer_gid(Varlink *v, gid_t *ret);
 int varlink_get_peer_pid(Varlink *v, pid_t *ret);
 int varlink_get_peer_pidref(Varlink *v, PidRef *ret);