1 files changed, 183 insertions, 0 deletions

diff --git a/src/regress/lib/libc/sys/t_truncate.c b/src/regress/lib/libc/sys/t_truncate.c
new file mode 100644
index 0000000000..1d059af5f5
--- /dev/null
+++ b/src/regress/lib/libc/sys/t_truncate.c
@@ -0,0 +1,183 @@
+/*      $OpenBSD: t_truncate.c,v 1.1.1.1 2019/11/19 19:57:04 bluhm Exp $        */
+/* $NetBSD: t_truncate.c,v 1.3 2017/01/13 20:03:51 christos Exp $ */
+
+/*-
+ * Copyright (c) 2011 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jukka Ruohonen.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``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 FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+#include "macros.h"
+
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: t_truncate.c,v 1.3 2017/01/13 20:03:51 christos Exp $");
+
+#include <sys/stat.h>
+
+#include "atf-c.h"
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+static const char path[] = "truncate";
+static const size_t sizes[] = { 8, 16, 512, 1024, 2048, 4094, 3000, 30 };
+
+ATF_TC_WITH_CLEANUP(ftruncate_basic);
+ATF_TC_HEAD(ftruncate_basic, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "A basic test of ftruncate(2)");
+}
+
+ATF_TC_BODY(ftruncate_basic, tc)
+{
+        struct stat st;
+        size_t i;
+        int fd;
+
+        fd = open(path, O_RDWR | O_CREAT, 0600);
+        ATF_REQUIRE(fd >= 0);
+
+        for (i = 0; i < __arraycount(sizes); i++) {
+
+                (void)memset(&st, 0, sizeof(struct stat));
+
+                ATF_REQUIRE(ftruncate(fd, sizes[i]) == 0);
+                ATF_REQUIRE(fstat(fd, &st) == 0);
+
+                (void)fprintf(stderr, "truncating to %zu bytes\n", sizes[i]);
+
+                if (sizes[i] != (size_t)st.st_size)
+                        atf_tc_fail("ftruncate(2) did not truncate");
+        }
+
+        (void)close(fd);
+        (void)unlink(path);
+}
+
+ATF_TC_CLEANUP(ftruncate_basic, tc)
+{
+        (void)unlink(path);
+}
+
+ATF_TC(ftruncate_err);
+ATF_TC_HEAD(ftruncate_err, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test errors from ftruncate(2)");
+        atf_tc_set_md_var(tc, "require.user", "unprivileged");
+}
+
+ATF_TC_BODY(ftruncate_err, tc)
+{
+        int fd;
+
+        fd = open("/etc/passwd", O_RDONLY, 0400);
+        ATF_REQUIRE(fd >= 0);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(EBADF, ftruncate(-1, 999) == -1);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(EINVAL, ftruncate(fd, 999) == -1);
+
+        (void)close(fd);
+}
+
+ATF_TC_WITH_CLEANUP(truncate_basic);
+ATF_TC_HEAD(truncate_basic, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "A basic test of truncate(2)");
+}
+
+ATF_TC_BODY(truncate_basic, tc)
+{
+        struct stat st;
+        size_t i;
+        int fd;
+
+        fd = open(path, O_RDWR | O_CREAT, 0600);
+        ATF_REQUIRE(fd >= 0);
+
+        for (i = 0; i < __arraycount(sizes); i++) {
+
+                (void)memset(&st, 0, sizeof(struct stat));
+
+                ATF_REQUIRE(truncate(path, sizes[i]) == 0);
+                ATF_REQUIRE(fstat(fd, &st) == 0);
+
+                (void)fprintf(stderr, "truncating to %zu bytes\n", sizes[i]);
+
+                if (sizes[i] != (size_t)st.st_size)
+                        atf_tc_fail("truncate(2) did not truncate");
+        }
+
+        (void)close(fd);
+        (void)unlink(path);
+}
+
+ATF_TC_CLEANUP(truncate_basic, tc)
+{
+        (void)unlink(path);
+}
+
+ATF_TC(truncate_err);
+ATF_TC_HEAD(truncate_err, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test errors from truncate(2)");
+        atf_tc_set_md_var(tc, "require.user", "unprivileged");
+}
+
+ATF_TC_BODY(truncate_err, tc)
+{
+        char buf[PATH_MAX];
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(EFAULT, truncate((void *)-1, 999) == -1);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(EISDIR, truncate("/etc", 999) == -1);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(ENOENT, truncate("/a/b/c/d/e/f/g", 999) == -1);
+
+        errno = 0;
+        snprintf(buf, sizeof(buf), "%s/truncate_test.root_owned",
+            atf_tc_get_config_var(tc, "srcdir"));
+        ATF_REQUIRE_ERRNO(EACCES, truncate(buf, 999) == -1);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+        ATF_TP_ADD_TC(tp, ftruncate_basic);
+        ATF_TP_ADD_TC(tp, ftruncate_err);
+        ATF_TP_ADD_TC(tp, truncate_basic);
+        ATF_TP_ADD_TC(tp, truncate_err);
+
+        return atf_no_error();
+}