1 files changed, 59 insertions, 0 deletions
diff --git a/fpipe.c b/fpipe.c
new file mode 100644
index 0000000..4ec9866
--- /dev/null
+++ b/fpipe.c
@@ -0,0 +1,59 @@
+/* fpipe.c
+ *
+ * Parent writing to child
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <wait.h>
+#define MAX_LINE 80
+
+int main(int argc, char **argv)
+{
+    pid_t pid;
+    int stat_loc;
+
+    int pfds[2];
+    int ret;
+
+    char buf[MAX_LINE+1];
+    const char *testbuf = { "I'm a parent and I'm writing to you" };
+
+    if (pipe(pfds) == 0)
+    {
+        pid = fork();
+        if (pid == -1)
+        {
+            perror("fork");
+            exit(EXIT_FAILURE);
+        }
+
+        if (!pid)
+        {
+            close(pfds[1]); /* child will not be writing anything */
+            ret = read(pfds[0], buf, MAX_LINE);
+            buf[ret] = 0;
+            printf("Child read: %s\n", buf);
+        }
+        else
+        {
+            close(pfds[0]); /* parent will not be reading anything */
+            ret = write(pfds[1], testbuf, strlen(testbuf));
+            ret = waitpid(pid, &stat_loc, WCONTINUED);
+        }
+    }
+    else
+    {
+        perror("pipe");
+        exit(EXIT_FAILURE);
+    }
+
+    close(pfds[0]);
+    close(pfds[1]);
+
+    return 0;
+}
+