add isastream (obsolete STREAMS junk)

[musl] / src / misc / isastream.c

diff --git a/src/misc/isastream.c b/src/misc/isastream.c
new file mode 100644 (file)
index 0000000..4dafdb0
--- /dev/null
+++ b/src/misc/isastream.c
@@ -0,0 +1,7 @@
+#include <stropts.h>
+#include <fcntl.h>
+
+int isastream(int fd)
+{
+       return fcntl(fd, F_GETFD) < 0 ? -1 : 0;
+}