Simple FIFO regress for O_RDWR using poll, read and write.

3 files changed, 166 insertions, 0 deletions

diff --git a/regress/sys/fifofs/Makefile b/regress/sys/fifofs/Makefile
new file mode 100644
index 00000000000..930fcfb1bde
--- /dev/null
+++ b/regress/sys/fifofs/Makefile
@@ -0,0 +1,13 @@
+#	$OpenBSD: Makefile,v 1.1 2004/01/29 20:11:09 millert Exp $
+
+PROG=fifotest
+FIFO=fi.fo.fum
+CLEANFILES+=${FIFO}
+CFLAGS+= -Wall
+
+REGRESS_TARGETS=runtest
+
+runtest: ${PROG}
+	./${PROG} ${FIFO} | diff - ${.CURDIR}/${PROG}.out
+
+.include <bsd.regress.mk>
diff --git a/regress/sys/fifofs/fifotest.c b/regress/sys/fifofs/fifotest.c
new file mode 100644
index 00000000000..a786fde9467
--- /dev/null
+++ b/regress/sys/fifofs/fifotest.c
@@ -0,0 +1,135 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/poll.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+void usage(void);
+void sigalrm(int);
+void dopoll(int, int, char *);
+
+#if defined(__OpenBSD__) || defined(__linux__)
+extern char *__progname;
+#else
+char *__progname;
+#endif
+
+/*
+ * Test FIFOs and poll(2)
+ * Expected results:
+ *  testing POLLIN|POLLOUT
+ *  1 fd(s) ready, revents == POLLOUT
+ *  testing POLLIN
+ *  0 fd(s) ready
+ *  testing POLLOUT
+ *  1 fd(s) ready, revents == POLLOUT
+ */
+int main(int argc, char **argv)
+{
+	struct sigaction sa;
+	ssize_t nread;
+	int fd;
+	char *fifo, buf[BUFSIZ];
+
+#if !defined(__OpenBSD__) && !defined(__linux__)
+	__progname = argv[0];
+#endif
+	if (argc != 2)
+		usage();
+
+	fifo = argv[1];
+	(void)unlink(fifo);
+	if (mkfifo(fifo, 0644) != 0) {
+		printf("mkfifo %s: %s\n", fifo, strerror(errno));
+		exit(1);
+	}
+
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = 0;
+	sa.sa_handler = sigalrm;
+	sigaction(SIGALRM, &sa, NULL);
+
+	alarm(2);
+	if ((fd = open(fifo, O_RDWR, 0644)) == -1) {
+		printf("open %s: %s\n", fifo, strerror(errno));
+		exit(1);
+	}
+	alarm(0);
+	(void)unlink(fifo);
+	printf("sucessfully opened fifo\n");
+
+	printf("\nTesting empty FIFO:\n");
+	dopoll(fd, POLLIN|POLLOUT, "POLLIN|POLLOUT");
+	dopoll(fd, POLLIN, "POLLIN");
+	dopoll(fd, POLLOUT, "POLLOUT");
+
+	if (write(fd, "test", 4) != 4) {
+		printf("write error: %s\n", strerror(errno));
+		exit(1);
+	}
+
+	printf("\nTesting full FIFO:\n");
+	dopoll(fd, POLLIN|POLLOUT, "POLLIN|POLLOUT");
+	dopoll(fd, POLLIN, "POLLIN");
+	dopoll(fd, POLLOUT, "POLLOUT");
+
+	if ((nread = read(fd, buf, sizeof(buf))) <= 0) {
+		printf("read error: %s\n", (nread == 0) ? "EOF" : strerror(errno));
+		exit(1);
+	}
+	buf[nread] = '\0';
+	printf("\treceived '%s' from FIFO\n", buf);
+
+	exit(0);
+}
+
+void
+dopoll(int fd, int events, char *str)
+{
+	struct pollfd pfd;
+	int nready;
+
+	pfd.fd = fd;
+	pfd.events = events;
+
+	printf("\ttesting %s\n", str);
+	pfd.events = events;
+	alarm(2);
+	nready = poll(&pfd, 1, 0);
+	alarm(0);
+	if (nready < 0) {
+		printf("poll: %s\n", strerror(errno));
+		return;
+	}
+	printf("\t\t%d fd(s) ready%s", nready, nready ? ", revents ==" : "");
+	if (pfd.revents & POLLIN)
+		printf(" POLLIN");
+	if (pfd.revents & POLLOUT)
+		printf(" POLLOUT");
+	if (pfd.revents & POLLERR)
+		printf(" POLLERR");
+	if (pfd.revents & POLLHUP)
+		printf(" POLLHUP");
+	if (pfd.revents & POLLNVAL)
+		printf(" POLLNVAL");
+	printf("\n");
+}
+
+void
+sigalrm(int dummy)
+{
+	/* Just cause EINTR */
+	return;
+}
+
+void
+usage(void)
+{
+	fprintf(stderr, "usage: %s fifoname\n", __progname);
+	exit(1);
+}
diff --git a/regress/sys/fifofs/fifotest.out b/regress/sys/fifofs/fifotest.out
new file mode 100644
index 00000000000..717f2e0a4fa
--- /dev/null
+++ b/regress/sys/fifofs/fifotest.out
@@ -0,0 +1,18 @@
+sucessfully opened fifo
+
+Testing empty FIFO:
+	testing POLLIN|POLLOUT
+		1 fd(s) ready, revents == POLLOUT
+	testing POLLIN
+		0 fd(s) ready
+	testing POLLOUT
+		1 fd(s) ready, revents == POLLOUT
+
+Testing full FIFO:
+	testing POLLIN|POLLOUT
+		1 fd(s) ready, revents == POLLIN POLLOUT
+	testing POLLIN
+		1 fd(s) ready, revents == POLLIN
+	testing POLLOUT
+		1 fd(s) ready, revents == POLLOUT
+	received 'test' from FIFO