Use LOCAL_PEERCRED option instead SO_PEERCRED where appropriate

Author: arrowd

src/responder/common/responder_common.c

@@ -112,8 +112,13 @@ static errno_t get_client_cred(struct cli_ctx *cctx)
     cctx->creds->ucred.gid = -1;
     cctx->creds->ucred.pid = -1;
 
+#ifdef LOCAL_PEERCRED
+    ret = getsockopt(cctx->cfd, SOL_SOCKET, LOCAL_PEERCRED, &cctx->creds->ucred,
+                     &client_cred_len);
+#else
     ret = getsockopt(cctx->cfd, SOL_SOCKET, SO_PEERCRED, &cctx->creds->ucred,
                      &client_cred_len);
+#endif
     if (ret != EOK) {
         ret = errno;
         DEBUG(SSSDBG_CRIT_FAILURE,

src/sss_client/common.c

@@ -1034,8 +1034,13 @@ static errno_t check_server_cred(int sockfd)
         return EFAULT;
     }
 
+#ifdef LOCAL_PEERCRED
+    ret = getsockopt(sockfd, SOL_SOCKET, LOCAL_PEERCRED, &server_cred,
+                     &server_cred_len);
+#else
     ret = getsockopt(sockfd, SOL_SOCKET, SO_PEERCRED, &server_cred,
                      &server_cred_len);
+#endif
     if (ret != 0) {
         return errno;
     }

src/tests/intg/getsockopt_wrapper.c

@@ -14,6 +14,10 @@
 #include <fcntl.h>
 #include <unistd.h>
 
+#if !defined(SO_PEERCRED) && defined(LOCAL_PEERCRED)
+#define SO_PEERCRED LOCAL_PEERCRED
+#endif
+
 static bool is_dbus_socket(int fd)
 {
     int ret;