Allow setting a pipe read-only or write-only after creation

[libs/core.git] / source / io / pipe.cpp

diff --git a/source/io/pipe.cpp b/source/io/pipe.cpp
index 831076f0086b2ffd756ec9e86a3b1b1364e9b1cc..0a72a80068da4d9ac686fdb8cd3216801e316725 100644 (file)
--- a/source/io/pipe.cpp
+++ b/source/io/pipe.cpp
@@ -24,6 +24,22 @@ Pipe::~Pipe()
        sys_close(write_handle);
 }
 
+void Pipe::set_mode(Mode m)
+{
+       m = m&M_RDWR;
+       if(!m)
+               throw invalid_argument("Pipe::set_mode");
+
+       check_access(m);
+
+       Mode close = mode&M_RDWR&~m;
+       if(close&M_READ)
+               sys_close(read_handle);
+       if(close&M_WRITE)
+               sys_close(write_handle);
+       mode = (mode&~M_RDWR)|m;
+}
+
 void Pipe::set_block(bool b)
 {
        mode = (mode&~M_NONBLOCK);