src/tests/inpty.cc: Send the inner stderr to the outer stderr

Signed-off-by: Anders Kaseorg <andersk@mit.edu>
2016-11-19 18:30:51 -05:00
parent 3ba5a29758
commit f0f83f5c4e
1 changed files with 15 additions and 0 deletions
@@ -66,6 +66,13 @@ int main( int argc, char *argv[] )
  memset( &winsize, 0, sizeof( winsize ) );
  winsize.ws_col = 80;
  winsize.ws_row = 24;
+
+  int saved_stderr = dup(STDERR_FILENO);
+  if ( saved_stderr < 0 ) {
+    perror( "dup" );
+    return 1;
+  }
+
  int master;
  pid_t child = forkpty( &master, NULL, NULL, &winsize );
  if ( child == -1 ) {
@@ -77,6 +84,14 @@ int main( int argc, char *argv[] )
     */
    return 77;
  } else if ( child == 0 ) {
+    if ( dup2( saved_stderr, STDERR_FILENO ) < 0 ) {
+      perror( "dup2" );
+      exit( 1 );
+    }
+    if ( close( saved_stderr ) < 0 ) {
+      perror( "close" );
+      exit( 1 );
+    }
    if ( execvp( argv[1], argv + 1 ) < 0 ) {
      perror( "execve" );
      exit( 1 );