add in some contributed O_APPEND test helper programs.

src/Makefile

@@ -36,7 +36,7 @@ include $(TOPDIR)/include/builddefs
 TARGETS = alloc acl_get bstat devzero dirstress fault feature \
 	  fsstress fill fill2 getpagesize holes ioctl loggen lstat64 \
 	  nametest permname randholes runas truncfile usemem \
-	  fstest mmapcat
+	  fstest mmapcat append_reader append_writer
 ifeq ($(HAVE_DB), true)
 TARGETS += dbtest
 endif

src/append_reader.c

@@ -0,0 +1,44 @@
+/* Simple test program for checking O_APPEND writes (see append_writer.c)
+ *
+ * Contributed by hatakeyama@bsd.tnes.nec.co.jp
+ */
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/param.h>
+#include <stdio.h>
+
+int main(int argc, char **argv)
+{
+	char *file;
+	int fd, i, rc, d;
+
+	if (argc < 2)
+		exit(1);
+
+	file = argv[1];
+
+	if ((fd = open(file, O_RDONLY, 0600)) == -1) {
+		perror("couldn't open");
+		exit(1);
+	}
+
+	for (i = 0; ;i ++) {
+		if ((rc = read(fd, &d, sizeof(d))) != sizeof(i)) {
+			if (rc == 0)
+				exit(0);
+			perror("couldn't read");
+			exit(1);
+		}
+
+		if (d != i) {
+			fprintf(stderr, "bad data, offset = %u", i * 4);
+			exit(1);
+		}
+	}
+
+	exit(0);
+}
+

src/append_writer.c

@@ -0,0 +1,34 @@
+/* Simple test program for O_APPEND writes (checked by append_reader.c)
+ * 
+ * Contributed by hatakeyama@bsd.tnes.nec.co.jp
+ */
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/param.h>
+
+int main(int argc, char **argv)
+{
+	char file[MAXPATHLEN];
+	int fd, i;
+
+	sprintf(file, "testfile.%d", getpid());
+
+	if ((fd = open(file, O_CREAT | O_RDWR | O_APPEND, 0600)) == -1) {
+		perror("couldn't open");
+		exit(1);
+	}
+
+	for (i = 0; ;i ++) {
+		if (write(fd, &i, sizeof(i)) != sizeof(i)) {
+			perror("couldn't write");
+			exit(1);
+		}
+	}
+
+	exit(0);
+}
+