feat: add streq

user/namedwriter.c

@@ -0,0 +1,42 @@
+#include "ulib.h"
+
+/*
+ * Sibling of namedreader.c -- see its header comment for the full picture.
+ * Sleeps well past when namedreader.c (spawned moments earlier, at boot)
+ * will already be parked in a blocking read() on the still-empty named
+ * pipe, so the write below has to actually wake it back up (schedWakeChannel
+ * via pipeWrite, pipe.c) instead of the reader simply finding data already
+ * waiting -- same proof pattern fifowriter.c uses for the handle-based
+ * shared pipe, now for a path-based one neither side had to be told about
+ * by a common parent.
+ */
+
+#define namedPipePath "/tmp/rendezvous"
+#define namedWriterDelayMs 200
+
+static const char* payload = "hello via named pipe";
+
+int main(void)
+{
+    print("namedwriter: start, pid=");
+    printDec(userGetpid());
+    print("\n");
+
+    userSleep(namedWriterDelayMs);
+
+    long fd = userOpen(namedPipePath, oWriteOnly);
+    if (fd < 0) {
+        print("namedwriter: FAIL open\n");
+        return 1;
+    }
+
+    long written = userWrite((int)fd, payload, stringLength(payload));
+    if (written != (long)stringLength(payload)) {
+        print("namedwriter: FAIL short/failed write\n");
+        return 1;
+    }
+    print("namedwriter: wrote payload\n");
+
+    userClose((int)fd);
+    return 0;
+}