apps: Fix additional open() arguments.

Add missing mode arguments to direct open() calls that use O_CREAT.

Also open the lp503x device with explicit read-only flags instead of O_CREAT, matching the device-node usage.

Signed-off-by: Nightt <87569709+nightt5879@users.noreply.github.com>

testing/drivers/drivertest/drivertest_audio.c

@@ -382,7 +382,8 @@ static int audio_test_prepare(FAR struct audio_state_s *state,
     }
   else
     {
-      state->out_fd = open(state->outfile, O_WRONLY | O_CREAT | O_TRUNC);
+      state->out_fd = open(state->outfile,
+                           O_WRONLY | O_CREAT | O_TRUNC, 0666);
     }
 
   if (state->out_fd == -1)

testing/drivers/sd_stress/sd_stress_main.c

@@ -160,7 +160,7 @@ static bool create_files(const char *dir, const char *name,
           bytes[j] = (bytes[j] + i) & 0xff;
         }
 
-      int fd = open(path, O_CREAT | O_RDWR);
+      int fd = open(path, O_CREAT | O_RDWR, 0666);
 
       if (fd < 0)
         {

testing/fs/smart_test/smart_test.c

@@ -393,7 +393,7 @@ static int smart_circular_log_test(char *filename)
 
   /* Open the circular log file */
 
-  fd = open(filename, O_RDWR | O_CREAT);
+  fd = open(filename, O_RDWR | O_CREAT, 0666);
   if (fd == -1)
     {
       printf("Unable to create file %s\n", filename);

testing/testsuites/kernel/fs/cases/fs_poll_test.c

@@ -59,13 +59,13 @@ void test_nuttx_fs_poll01(FAR void **state)
   int poll01_ret;
   struct pollfd poll01_fds[5];
 
-  poll01_fd1 = open(I_FILE1, O_RDONLY | O_CREAT);
+  poll01_fd1 = open(I_FILE1, O_RDONLY | O_CREAT, 0666);
   assert_true(poll01_fd1 >= 0);
 
   poll01_fds[0].fd = poll01_fd1;
   poll01_fds[0].events = POLLOUT;
 
-  poll01_fd2 = open(I_FILE2, O_RDWR | O_CREAT);
+  poll01_fd2 = open(I_FILE2, O_RDWR | O_CREAT, 0666);
   assert_true(poll01_fd2 >= 0);
 
   poll01_fds[1].fd = poll01_fd2;

testing/testsuites/kernel/syscall/cases/fcntl_test.c

@@ -306,7 +306,7 @@ void test_nuttx_syscall_fcntl06(FAR void **state)
 
   sprintf(fname, "fcntl06_%d", gettid());
 
-  fd = open(fname, O_RDWR | O_CREAT);
+  fd = open(fname, O_RDWR | O_CREAT, 0700);
   assert_true(fd > 0);
 
   for (lc = 0; lc < 10; lc++)

testing/testsuites/kernel/syscall/cases/lseek_test.c

@@ -91,7 +91,7 @@ void test_nuttx_syscall_lseek01(FAR void **state)
 
   snprintf(filename, sizeof(filename), "%s_file", __func__);
 
-  fd = open(filename, O_RDWR | O_CREAT);
+  fd = open(filename, O_RDWR | O_CREAT, 0644);
 
   if (fd > 0)
     {

testing/testsuites/kernel/syscall/cases/rmdir_test.c

@@ -103,7 +103,7 @@ void test_nuttx_syscall_rmdir02(FAR void **state)
   assert_int_equal(ret, 0);
   ret = mkdir("Rmdir02_testdir/test1", (S_IRWXU | S_IRWXG | S_IRWXO));
   assert_int_equal(ret, 0);
-  fd = open("Rmdir02_testfile2", O_CREAT | O_RDWR);
+  fd = open("Rmdir02_testfile2", O_CREAT | O_RDWR, 0700);
 
   if (fd > 0)
     close(fd);

testing/testsuites/kernel/syscall/cases/unlink_test.c

@@ -55,7 +55,7 @@ void test_nuttx_syscall_unlink01(FAR void **state)
 
   sprintf(fname, "%s_file", __func__);
 
-  fd = open(fname, O_RDWR | O_CREAT);
+  fd = open(fname, O_RDWR | O_CREAT, 0700);
   if (fd > 0)
     {
       close(fd);