diff -urNp -x '*.orig' uhd-4.1.0.1.org/mpm/lib/i2c/CMakeLists.txt uhd-4.1.0.1/mpm/lib/i2c/CMakeLists.txt
--- uhd-4.1.0.1.org/mpm/lib/i2c/CMakeLists.txt	2021-07-13 17:10:44.000000000 +0200
+++ uhd-4.1.0.1/mpm/lib/i2c/CMakeLists.txt	2021-08-15 16:33:43.898704758 +0200
@@ -3,6 +3,8 @@
 #
 # SPDX-License-Identifier: GPL-3.0-or-later
 #
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_LARGEFILE64_SOURCE")
+
 set(I2C_SOURCES
     ${CMAKE_CURRENT_SOURCE_DIR}/i2cdev_iface.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/i2c_regs_iface.cpp
diff -urNp -x '*.orig' uhd-4.1.0.1.org/mpm/tools/eeprom.c uhd-4.1.0.1/mpm/tools/eeprom.c
--- uhd-4.1.0.1.org/mpm/tools/eeprom.c	2021-07-13 17:10:44.000000000 +0200
+++ uhd-4.1.0.1/mpm/tools/eeprom.c	2021-08-15 16:33:43.898704758 +0200
@@ -278,7 +278,7 @@ void usrp_sulfur_eeprom_to_file(struct u
 	size_t len = sizeof(*ep);
 	size_t got = 0;
 
-	fd = open(path, O_WRONLY | O_CREAT);
+	fd = open(path, O_WRONLY | O_CREAT, 0666);
 	if (fd < 0) {
 		perror("Could not open file:\n");
 		return;
@@ -303,7 +303,7 @@ void usrp_sulfur_db_eeprom_to_file(struc
 	size_t len = sizeof(*ep);
 	size_t got = 0;
 
-	fd = open(path, O_WRONLY | O_CREAT);
+	fd = open(path, O_WRONLY | O_CREAT, 0666);
 	if (fd < 0) {
 		perror("Could not open file:\n");
 		return;
@@ -397,7 +397,7 @@ void usrp_sulfur_eeprom_to_i2c(struct us
 	size_t len = sizeof(*ep);
 	size_t i;
 
-	fd = open(path, O_WRONLY | O_CREAT);
+	fd = open(path, O_WRONLY | O_CREAT, 0666);
 	if (fd < 0) {
 		perror("Could not open file:\n");
 		return;