X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Fio%2Ftest%2Frun-14-duplex-both-read.c;fp=ccan%2Fio%2Ftest%2Frun-14-duplex-both-read.c;h=366f1d44bbaafdf65c09baa1942a490df6c60053;hb=dded32f2b03fca526271e35671fa36d299880429;hp=0000000000000000000000000000000000000000;hpb=83d4e1285dec87fa54043377eafd1b3bf9b0c53f;p=ccan

diff --git a/ccan/io/test/run-14-duplex-both-read.c b/ccan/io/test/run-14-duplex-both-read.c
new file mode 100644
index 00000000..366f1d44
--- /dev/null
+++ b/ccan/io/test/run-14-duplex-both-read.c
@@ -0,0 +1,151 @@
+/* Check a bug where we have just completed a read, then set up a duplex
+ * which tries to do a read. */
+#include <ccan/io/io.h>
+/* Include the C files directly. */
+#include <ccan/io/poll.c>
+#include <ccan/io/io.c>
+#include <ccan/tap/tap.h>
+#include <sys/wait.h>
+#include <stdio.h>
+
+#ifndef PORT
+#define PORT "65014"
+#endif
+
+#define is_idle(conn) ((conn)->plan.io == NULL)
+
+struct data {
+	struct io_listener *l;
+	int state;
+	struct io_conn *c1, *c2;
+	char buf[4];
+	char wbuf[32];
+};
+
+static void finish_ok(struct io_conn *conn, struct data *d)
+{
+	d->state++;
+}
+
+static struct io_plan end(struct io_conn *conn, struct data *d)
+{
+	d->state++;
+
+	/* last one out closes. */
+	if (conn == d->c1 && is_idle(d->c2))
+		return io_close();
+
+	/* last one out closes. */
+	if (conn == d->c2 && is_idle(d->c1))
+		return io_close();
+
+	return io_idle();
+}
+
+static struct io_plan make_duplex(struct io_conn *conn, struct data *d)
+{
+	/* Have duplex read the rest of the buffer. */
+	d->c2 = io_duplex(conn, io_read(d->buf+1, sizeof(d->buf)-1, end, d));
+	ok1(d->c2);
+	io_set_finish(d->c2, finish_ok, d);
+
+	return io_write(d->wbuf, sizeof(d->wbuf), end, d);
+}
+
+static void init_conn(int fd, struct data *d)
+{
+	ok1(d->state == 0);
+	d->state++;
+
+	io_close_listener(d->l);
+
+	memset(d->wbuf, 7, sizeof(d->wbuf));
+
+	d->c1 = io_new_conn(fd, io_read(d->buf, 1, make_duplex, d));
+	io_set_finish(d->c1, finish_ok, d);
+}
+
+static int make_listen_fd(const char *port, struct addrinfo **info)
+{
+	int fd, on = 1;
+	struct addrinfo *addrinfo, hints;
+
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = AF_UNSPEC;
+	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_flags = AI_PASSIVE;
+	hints.ai_protocol = 0;
+
+	if (getaddrinfo(NULL, port, &hints, &addrinfo) != 0)
+		return -1;
+
+	fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
+		    addrinfo->ai_protocol);
+	if (fd < 0)
+		return -1;
+
+	setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+	if (bind(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0) {
+		close(fd);
+		return -1;
+	}
+	if (listen(fd, 1) != 0) {
+		close(fd);
+		return -1;
+	}
+	*info = addrinfo;
+	return fd;
+}
+
+int main(void)
+{
+	struct data *d = malloc(sizeof(*d));
+	struct addrinfo *addrinfo;
+	int fd, status;
+
+	/* This is how many tests you plan to run */
+	plan_tests(10);
+	d->state = 0;
+	fd = make_listen_fd(PORT, &addrinfo);
+	ok1(fd >= 0);
+	d->l = io_new_listener(fd, init_conn, d);
+	ok1(d->l);
+	fflush(stdout);
+	if (!fork()) {
+		int i;
+		char buf[32];
+
+		io_close_listener(d->l);
+		free(d);
+		fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
+			    addrinfo->ai_protocol);
+		if (fd < 0)
+			exit(1);
+		if (connect(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0)
+			exit(2);
+		signal(SIGPIPE, SIG_IGN);
+		for (i = 0; i < strlen("hellothere"); i++) {
+			if (write(fd, "hellothere" + i, 1) != 1)
+				break;
+		}
+		for (i = 0; i < 32; i++) {
+			if (read(fd, buf+i, 1) != 1)
+				break;
+		}
+		close(fd);
+		freeaddrinfo(addrinfo);
+		exit(0);
+	}
+	freeaddrinfo(addrinfo);
+	ok1(io_loop() == NULL);
+	ok1(d->state == 5);
+	ok1(memcmp(d->buf, "hellothere", sizeof(d->buf)) == 0);
+	free(d);
+
+	ok1(wait(&status));
+	ok1(WIFEXITED(status));
+	ok1(WEXITSTATUS(status) == 0);
+
+	/* This exits depending on whether all tests passed */
+	return exit_status();
+}