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-rw-r--r--test/unistd/tst-preadwrite.c150
1 files changed, 150 insertions, 0 deletions
diff --git a/test/unistd/tst-preadwrite.c b/test/unistd/tst-preadwrite.c
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+++ b/test/unistd/tst-preadwrite.c
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+/* Tests for pread and pwrite.
+ Copyright (C) 1998, 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ 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 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#define _GNU_SOURCE
+#include <stdlib.h>
+#include <stdio.h>
+#include <search.h>
+#include <errno.h>
+#include <error.h>
+#include <string.h>
+#include <unistd.h>
+
+#define TESTFILE_NAME "CRAP.XXXXXX"
+#define STRINGIFY(s) STRINGIFY2 (s)
+#define STRINGIFY2(s) #s
+
+/* These are for the temporary file we generate. */
+char *name;
+int fd;
+
+
+/* Test the 32-bit versions first. */
+#define PREAD pread
+#define PWRITE pwrite
+
+int 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 %s", STRINGIFY (PWRITE));
+
+ for (i = 450; i < 600; ++i)
+ buf[i] = i;
+ if (PWRITE (fd, buf + 450, 150, 450) != 150)
+ error (EXIT_FAILURE, errno, "during %s", STRINGIFY (PWRITE));
+
+ if (PREAD (fd, res, sizeof (buf) - 50, 50) != sizeof (buf) - 50)
+ error (EXIT_FAILURE, errno, "during %s", STRINGIFY (PREAD));
+
+ close (fd);
+ unlink (name);
+ return memcmp (buf + 50, res, sizeof (buf) - 50);
+}
+
+/* Test the 64-bit versions as well. */
+#if defined __UCLIBC_HAS_LFS__
+
+#undef PREAD
+#undef PWRITE
+#define PREAD pread64
+#define PWRITE pwrite64
+
+
+int test64(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 %s", STRINGIFY (PWRITE));
+
+ for (i = 450; i < 600; ++i)
+ buf[i] = i;
+ if (PWRITE (fd, buf + 450, 150, 450) != 150)
+ error (EXIT_FAILURE, errno, "during %s", STRINGIFY (PWRITE));
+
+ if (PREAD (fd, res, sizeof (buf) - 50, 50) != sizeof (buf) - 50)
+ error (EXIT_FAILURE, errno, "during %s", STRINGIFY (PREAD));
+
+ close (fd);
+ unlink (name);
+ return memcmp (buf + 50, res, sizeof (buf) - 50);
+}
+#endif
+
+void prepare(void)
+{
+ if (!name) {
+ name = malloc (BUFSIZ);
+ if (name == NULL)
+ error (EXIT_FAILURE, errno, "cannot allocate file name");
+ }
+ strncpy(name, TESTFILE_NAME, BUFSIZ);
+
+ /* Open our test file. */
+ fd = mkstemp (name);
+ if (fd == -1)
+ error (EXIT_FAILURE, errno, "cannot open test file `%s'", name);
+}
+
+int main (int argc, char **argv)
+{
+ int result = 0;
+
+ prepare();
+ result+=test(argc, argv);
+ if (result) {
+ fprintf(stderr, "pread/pwrite test failed.\n");
+ return(EXIT_FAILURE);
+ }
+ fprintf(stderr, "pread/pwrite test successful.\n");
+
+#if defined __UCLIBC_HAS_LFS__
+ prepare();
+ result+=test64(argc, argv);
+ if (result) {
+ fprintf(stderr, "pread64/pwrite64 test failed.\n");
+ return(EXIT_FAILURE);
+ }
+ fprintf(stderr, "pread64/pwrite64 test successful.\n");
+#endif
+ return(EXIT_SUCCESS);
+}