aboutsummaryrefslogtreecommitdiff
path: root/posix/tst-preadwrite.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>1998-10-20 14:40:47 +0000
committerUlrich Drepper <drepper@redhat.com>1998-10-20 14:40:47 +0000
commita9b171efe19d416975daa3640bda38e856e57ce4 (patch)
tree3b24e5215e329bdffd4c1ff3e6bfadcf0eb46ea5 /posix/tst-preadwrite.c
parentd9ff6f3e935581d3f051f630e7e3b7e5e17246e0 (diff)
downloadglibc-a9b171efe19d416975daa3640bda38e856e57ce4.zip
glibc-a9b171efe19d416975daa3640bda38e856e57ce4.tar.gz
glibc-a9b171efe19d416975daa3640bda38e856e57ce4.tar.bz2
Update.
* posix/Makefile (tests): Add tst-preadwrite. * posix/tst-preadwrite.c: New file.
Diffstat (limited to 'posix/tst-preadwrite.c')
-rw-r--r--posix/tst-preadwrite.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/posix/tst-preadwrite.c b/posix/tst-preadwrite.c
new file mode 100644
index 0000000..68379bf
--- /dev/null
+++ b/posix/tst-preadwrite.c
@@ -0,0 +1,91 @@
+/* Tests for pread and pwrite.
+ Copyright (C) 1998 Free Software Foundation, Inc.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <error.h>
+#include <string.h>
+#include <unistd.h>
+
+
+/* Prototype for our test function. */
+extern void do_prepare (int argc, char *argv[]);
+extern int do_test (int argc, char *argv[]);
+
+/* We have a preparation function. */
+#define PREPARE do_prepare
+
+/* We might need a bit longer timeout. */
+#define TIMEOUT 20 /* sec */
+
+/* This defines the `main' function and some more. */
+#include <test-skeleton.c>
+
+/* These are for the temporary file we generate. */
+char *name;
+int fd;
+
+void
+do_prepare (int argc, char *argv[])
+{
+ char name_len;
+
+ name_len = strlen (test_dir);
+ name = malloc (name_len + sizeof ("/preadwriteXXXXXX"));
+ mempcpy (mempcpy (name, test_dir, name_len),
+ "/preadwriteXXXXXX", sizeof ("/preadwriteXXXXXX"));
+ add_temp_file (name);
+
+ /* Open our test file. */
+ fd = mkstemp (name);
+ if (fd == -1)
+ error (EXIT_FAILURE, errno, "cannot open test file `%s'", name);
+}
+
+
+int
+do_test (int argc, char *argv[])
+{
+ char buf[1000];
+ char res[1000];
+ int i;
+
+ memset (buf, '\0', sizeof (buf));
+ memset (res, '\xff', sizeof (res));
+
+ if (write (fd, buf, sizeof (buf)) != sizeof (buf))
+ error (EXIT_FAILURE, errno, "during write");
+
+ for (i = 100; i < 200; ++i)
+ buf[i] = i;
+ if (pwrite (fd, buf + 100, 100, 100) != 100)
+ error (EXIT_FAILURE, errno, "during pwrite");
+
+ for (i = 450; i < 600; ++i)
+ buf[i] = i;
+ if (pwrite (fd, buf + 450, 150, 450) != 150)
+ error (EXIT_FAILURE, errno, "during pwrite");
+
+ if (pread (fd, res, sizeof (buf) - 50, 50) != sizeof (buf) - 50)
+ error (EXIT_FAILURE, errno, "during pread");
+
+ close (fd);
+ unlink (name);
+
+ return memcmp (buf + 50, res, sizeof (buf) - 50);
+}