Use LOCAL_PEERCRED option instead SO_PEERCRED where appropriate

Author: arrowd

src/responder/common/responder_common.c

@@ -112,7 +112,8 @@ static errno_t get_client_cred(struct cli_ctx *cctx)
     cctx->creds->ucred.gid = -1;
     cctx->creds->ucred.pid = -1;
 
-    ret = getsockopt(cctx->cfd, SOL_SOCKET, SO_PEERCRED, &cctx->creds->ucred,
+    ret = getsockopt(cctx->cfd, SOL_SOCKET, SSS_PEERCRED_SOCKET_OPTION,
+                     &cctx->creds->ucred,
                      &client_cred_len);
     if (ret != EOK) {
         ret = errno;

src/sss_client/common.c

@@ -1034,7 +1034,7 @@ static errno_t check_server_cred(int sockfd)
         return EFAULT;
     }
 
-    ret = getsockopt(sockfd, SOL_SOCKET, SO_PEERCRED, &server_cred,
+    ret = getsockopt(sockfd, SOL_SOCKET, SSS_PEERCRED_SOCKET_OPTION, &server_cred,
                      &server_cred_len);
     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;

src/util/util_creds.h

@@ -64,6 +64,7 @@ typedef void * SEC_CTX;
 #endif /* done HAVE_SELINUX */
 
 #ifdef HAVE_UCRED
+#define SSS_PEERCRED_SOCKET_OPTION SO_PEERCRED
 #define STRUCT_CRED struct ucred
 #define CRED_UID(x) ((x)->uid)
 #define CRED_GID(x) ((x)->gid)
@@ -76,6 +77,7 @@ typedef void * SEC_CTX;
  * page: https://man.freebsd.org/cgi/man.cgi?query=unix
  */
 #define STRUCT_CRED struct xucred
+#define SSS_PEERCRED_SOCKET_OPTION LOCAL_PEERCRED
 #define CRED_UID(x) ((x)->cr_uid)
 #define CRED_GID(x) ((x)->cr_ngroups > 0 ? (x)->cr_groups[0] : -1)
 #define CRED_PID(x) ((x)->cr_pid)