summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorWaldemar Brodkorb <wbx@openadk.org>2017-01-15 19:39:55 (GMT)
committerWaldemar Brodkorb <wbx@openadk.org>2017-01-15 19:39:55 (GMT)
commit71907d025f7da2391b2421e29dfe6645b45b3432 (patch)
tree653ff9b7569f58dc27eec1731cc5402370f10537
parent32b8713ef1cad579dde99ec86a404c38919050f5 (diff)
add preadv/pwritev test
-rw-r--r--test/misc/tst-preadvwritev.c125
1 files changed, 125 insertions, 0 deletions
diff --git a/test/misc/tst-preadvwritev.c b/test/misc/tst-preadvwritev.c
new file mode 100644
index 0000000..e9818d4
--- /dev/null
+++ b/test/misc/tst-preadvwritev.c
@@ -0,0 +1,125 @@
+/* Tests for preadv and pwritev.
+ Copyright (C) 2016 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#define __USE_MISC
+#include <sys/uio.h>
+
+static void do_prepare (void);
+#define PREPARE(argc, argv) do_prepare ()
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+#include "test-skeleton.c"
+
+static char *temp_filename;
+static int temp_fd;
+
+static void
+do_prepare (void)
+{
+ temp_fd = create_temp_file ("tst-preadvwritev.", &temp_filename);
+ if (temp_fd == -1)
+ {
+ printf ("cannot create temporary file: %m\n");
+ exit (1);
+ }
+}
+
+#if defined(preadv) && defined(pwritev)
+
+#define FAIL(str) \
+ do { printf ("error: %s (line %d)\n", str, __LINE__); return 1; } while (0)
+
+static int
+do_test_with_offset (off_t offset)
+{
+ struct iovec iov[2];
+ ssize_t ret;
+
+ char buf1[32];
+ char buf2[64];
+
+ memset (buf1, 0xf0, sizeof buf1);
+ memset (buf2, 0x0f, sizeof buf2);
+
+ /* Write two buffer with 32 and 64 bytes respectively. */
+ memset (iov, 0, sizeof iov);
+ iov[0].iov_base = buf1;
+ iov[0].iov_len = sizeof buf1;
+ iov[1].iov_base = buf2;
+ iov[1].iov_len = sizeof buf2;
+
+ ret = pwritev (temp_fd, iov, 2, offset);
+ if (ret == -1)
+ FAIL ("first pwritev returned -1");
+ if (ret != (sizeof buf1 + sizeof buf2))
+ FAIL ("first pwritev returned an unexpected value");
+
+ ret = pwritev (temp_fd, iov, 2, sizeof buf1 + sizeof buf2 + offset);
+ if (ret == -1)
+ FAIL ("second pwritev returned -1");
+ if (ret != (sizeof buf1 + sizeof buf2))
+ FAIL ("second pwritev returned an unexpected value");
+
+ char buf3[32];
+ char buf4[64];
+
+ memset (buf3, 0x0f, sizeof buf3);
+ memset (buf4, 0xf0, sizeof buf4);
+
+ iov[0].iov_base = buf3;
+ iov[0].iov_len = sizeof buf3;
+ iov[1].iov_base = buf4;
+ iov[1].iov_len = sizeof buf4;
+
+ /* Now read two buffer with 32 and 64 bytes respectively. */
+ ret = preadv (temp_fd, iov, 2, offset);
+ if (ret == -1)
+ FAIL ("first preadv returned -1");
+ if (ret != (sizeof buf3 + sizeof buf4))
+ FAIL ("first preadv returned an unexpected value");
+
+ if (memcmp (buf1, buf3, sizeof buf1) != 0)
+ FAIL ("first buffer from first preadv different than expected");
+ if (memcmp (buf2, buf4, sizeof buf2) != 0)
+ FAIL ("second buffer from first preadv different than expected");
+
+ ret = preadv (temp_fd, iov, 2, sizeof buf3 + sizeof buf4 + offset);
+ if (ret == -1)
+ FAIL ("second preadv returned -1");
+ if (ret != (sizeof buf3 + sizeof buf4))
+ FAIL ("second preadv returned an unexpected value");
+
+ /* And compare the buffers read and written to check if there are equal. */
+ if (memcmp (buf1, buf3, sizeof buf1) != 0)
+ FAIL ("first buffer from second preadv different than expected");
+ if (memcmp (buf2, buf4, sizeof buf2) != 0)
+ FAIL ("second buffer from second preadv different than expected");
+
+ return 0;
+}
+#endif
+
+static int
+do_test (void)
+{
+#if defined(preadv) && defined(pwritev)
+ return do_test_with_offset (0);
+#else
+ return 23;
+#endif
+}