tests: rewrite getdents test in C for better coverage

* tests/getdents.awk: Remove.
* tests/getdents.out: Remove.
* tests/getdents.c: New file.
* tests/getdents.test: Rewrite.
* tests/getdents64.c: New file.
* tests/getdents64.test: New test.
* tests/Makefile.am (check_PROGRAMS): Add getdents and getdents64.
(TESTS): Add getdents64.test.
(EXTRA_DIST): Remove getdents.awk and getdents.out.
* tests/.gitignore: Add getdents and getdents64.

1 files changed, 149 insertions, 0 deletions

diff --git a/tests/getdents64.c b/tests/getdents64.c
new file mode 100644
index 00000000..0f09c138
--- /dev/null
+++ b/tests/getdents64.c
@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <sys/syscall.h>
+
+#ifdef __NR_getdents64
+
+#include <assert.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+static const char fname[] =
+	"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
+	"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
+	"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
+	"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
+	"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
+	"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
+	"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
+	"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nZ";
+static const char qname[] =
+	"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
+	"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
+	"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
+	"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
+	"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
+	"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
+	"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
+	"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nZ";
+
+typedef struct {
+		uint64_t d_ino;
+		uint64_t d_off;
+		unsigned short d_reclen;
+		unsigned char d_type;
+		char d_name[256];
+} kernel_dirent64;
+
+static char buf[8192];
+
+static const char *
+str_d_type(const unsigned char d_type)
+{
+	switch (d_type) {
+		case DT_DIR:
+			return "DT_DIR";
+		case DT_REG:
+			return "DT_REG";
+		default:
+			return "DT_UNKNOWN";
+	}
+}
+static void
+print_dirent(const kernel_dirent64 *d)
+{
+	const unsigned int d_name_offset = offsetof(kernel_dirent64, d_name);
+	int d_name_len = d->d_reclen - d_name_offset;
+	assert(d_name_len > 0);
+
+	printf("{d_ino=%" PRIu64 ", d_off=%" PRId64
+	       ", d_reclen=%u, d_type=%s, d_name=",
+	       d->d_ino, d->d_off, d->d_reclen, str_d_type(d->d_type));
+
+	if (d->d_name[0] == '.')
+		printf("\"%.*s\"}", d_name_len, d->d_name);
+	else
+		printf("\"%s\"}", qname);
+}
+
+int
+main(int ac, const char **av)
+{
+	char *dname;
+	int rc;
+
+	assert(ac == 1);
+	assert(asprintf(&dname, "%s.test.tmp.dir", av[0]) > 0);
+	assert(!mkdir(dname, 0700));
+	assert(!chdir(dname));
+	(void) close(0);
+	assert(!creat(fname, 0600));
+	assert(!close(0));
+	assert(!open(".", O_RDONLY | O_DIRECTORY));
+	while ((rc = syscall(__NR_getdents64, 0, buf, sizeof(buf)))) {
+		kernel_dirent64 *d;
+		int i;
+
+		if (rc < 0)
+			return 77;
+		printf("getdents64(0, [");
+		for (i = 0; i < rc; i += d->d_reclen) {
+			d = (kernel_dirent64 *) &buf[i];
+			if (i)
+				printf(", ");
+			print_dirent(d);
+		}
+		printf("], %zu) = %d\n", sizeof(buf), rc);
+	}
+	printf("getdents64(0, [], %zu) = 0\n", sizeof(buf));
+	puts("+++ exited with 0 +++");
+	assert(!unlink(fname));
+	assert(!chdir(".."));
+	assert(!rmdir(dname));
+
+	return 0;
+}
+
+#else
+
+int
+main(void)
+{
+	return 77;
+}
+
+#endif