tests: check decoding of readahead syscall

* configure.ac (AC_CHECK_FUNCS): Add readahead.
* tests/readahead.c: New file.
* tests/readahead.test: New test.
* tests/.gitignore: Add readahead.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add readahead.test.

diff --git a/configure.ac b/configure.ac
index 5048de3153ab4939cabda90c92d53df1612226fc..dc84a49254be9a0dbddf67a6251e7eed8c427ff3 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -295,6 +295,7 @@ AC_CHECK_FUNCS(m4_normalize([
        preadv
        process_vm_readv
        pwritev
+       readahead
        signalfd
        stpcpy
        strerror

diff --git a/tests/.gitignore b/tests/.gitignore
index 5c5d0927972194951f05f04b35c2f9b3e418fcb7..8c41bea6b75fd3ad196b0bca39c6a61d1ebd97d5 100644 (file)
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -185,6 +185,7 @@ pselect6
 ptrace
 pwritev
 read-write
+readahead
 readdir
 readlink
 readlinkat

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 2cf967483df1defda8900fa8ba84465b45b76b9a..0b3b818d10b0e2746f79eb3862181a26c47f6215 100644 (file)
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -242,6 +242,7 @@ check_PROGRAMS = \
        ptrace \
        pwritev \
        read-write \
+       readahead \
        readdir \
        readlink \
        readlinkat \
@@ -569,6 +570,7 @@ DECODER_TESTS = \
        ptrace.test \
        pwritev.test \
        read-write.test \
+       readahead.test \
        readdir.test \
        readlink.test \
        readlinkat.test \

diff --git a/tests/readahead.c b/tests/readahead.c
new file mode 100644 (file)
index 0000000..5677c1e
--- /dev/null
+++ b/tests/readahead.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2016 Eugene Syromiatnikov <evgsyr@gmail.com>
+ * 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.
+ */
+
+#include "tests.h"
+#include <asm/unistd.h>
+
+#ifdef HAVE_READAHEAD
+# ifdef __GLIBC__
+/*
+ * Check for glibc readahead off64_t argument passing bug,
+ * see https://sourceware.org/bugzilla/show_bug.cgi?id=5208
+ */
+#  if !(defined __GLIBC_MINOR__ && \
+        (__GLIBC__ << 16) + __GLIBC_MINOR__ >= (2 << 16) + 8)
+#   undef HAVE_READAHEAD
+#  endif
+# endif /* __GLIBC__ */
+#endif /* HAVE_READAHEAD */
+
+#ifdef HAVE_READAHEAD
+
+# include <fcntl.h>
+# include <stdio.h>
+
+static const int fds[] = {
+       -0x80000000,
+       -100,
+       -1,
+       0,
+       1,
+       2,
+       0x7fffffff,
+};
+
+static const off64_t offsets[] = {
+       -0x8000000000000000LL,
+       -0x5060708090a0b0c0LL,
+       -1LL,
+        0,
+        1,
+        0xbadfaced,
+        0x7fffffffffffffffLL,
+};
+
+static const unsigned long counts[] = {
+       0UL,
+       0xdeadca75,
+       (unsigned long) 0xface1e55beeff00dULL,
+       (unsigned long) 0xffffffffffffffffULL,
+};
+
+int
+main(void)
+{
+       unsigned i;
+       unsigned j;
+       unsigned k;
+       ssize_t rc;
+
+       for (i = 0; i < ARRAY_SIZE(fds); i++)
+               for (j = 0; j < ARRAY_SIZE(offsets); j++)
+                       for (k = 0; k < ARRAY_SIZE(counts); k++) {
+                               rc = readahead(fds[i], offsets[j], counts[k]);
+
+                               printf("readahead(%d, %lld, %lu) = %s\n",
+                                       fds[i], (long long) offsets[j],
+                                       counts[k], sprintrc(rc));
+                       }
+
+       puts("+++ exited with 0 +++");
+       return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("HAVE_READAHEAD")
+
+#endif

diff --git a/tests/readahead.test b/tests/readahead.test
new file mode 100755 (executable)
index 0000000..397c690
--- /dev/null
+++ b/tests/readahead.test
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+# Check readahead syscall decoding.
+
+. "${srcdir=.}/init.sh"
+run_strace_match_diff -a1