tests: check decoding of kcmp syscall

* tests/kcmp.c: New file.
* tests/kcmp.test: New test.
* tests/.gitignore: Add kcmp.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add kcmp.test.

diff --git a/tests/.gitignore b/tests/.gitignore
index 8fec8fd46f301d7bc4d825eb7aafb51d34039310..f4b048177f8847dadeaf9c9fee19d9ddbb1370e2 100644 (file)
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -121,6 +121,7 @@ ipc_msg
 ipc_msgbuf
 ipc_sem
 ipc_shm
+kcmp
 keyctl
 kill
 ksysent

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 6f85eb64c9fcc126149c7d9863f229c1fe453a65..5dec768ae3a90977f73c7ce2a0ce6df36734e2f5 100644 (file)
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -181,6 +181,7 @@ check_PROGRAMS = \
        ipc_msgbuf \
        ipc_sem \
        ipc_shm \
+       kcmp \
        keyctl \
        kill \
        ksysent \
@@ -530,6 +531,7 @@ DECODER_TESTS = \
        ipc_msgbuf.test \
        ipc_sem.test \
        ipc_shm.test \
+       kcmp.test \
        keyctl.test \
        kill.test \
        lchown.test \

diff --git a/tests/kcmp.c b/tests/kcmp.c
new file mode 100644 (file)
index 0000000..2e2e5ff
--- /dev/null
+++ b/tests/kcmp.c
@@ -0,0 +1,104 @@
+/*
+ * Check decoding of kcmp syscall.
+ *
+ * Copyright (c) 2016 Eugene Syromyatnikov <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 __NR_kcmp
+
+# include <stdio.h>
+# include <unistd.h>
+
+# include "kernel_types.h"
+
+# define KCMP_FILE     0
+# define KCMP_SYSVSEM  6
+
+static void
+do_kcmp(kernel_ulong_t pid1, kernel_ulong_t pid2, kernel_ulong_t type,
+       const char *type_str, kernel_ulong_t idx1, kernel_ulong_t idx2)
+{
+       long rc;
+       const char *errstr;
+
+       rc = syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2);
+       errstr = sprintrc(rc);
+
+       printf("kcmp(%d, %d, ", (int) pid1, (int) pid2);
+
+       if (type_str)
+               printf("%s", type_str);
+       else
+               printf("%#x /* KCMP_??? */", (int) type);
+
+       if (type == KCMP_FILE)
+               printf(", %u, %u", (unsigned) idx1, (unsigned) idx2);
+       else if (type > KCMP_SYSVSEM)
+               printf(", %#llx, %#llx",
+                      (unsigned long long) idx1, (unsigned long long) idx2);
+
+       printf(") = %s\n", errstr);
+}
+
+int
+main(void)
+{
+       static const kernel_ulong_t bogus_pid1 =
+               (kernel_ulong_t) 0xdeadca75face1057ULL;
+       static const kernel_ulong_t bogus_pid2 =
+               (kernel_ulong_t) 0xdefaced1defaced2ULL;
+       static const kernel_ulong_t bogus_type =
+               (kernel_ulong_t) 0xbadc0dedda7adeadULL;
+       static const kernel_ulong_t bogus_idx1 =
+               (kernel_ulong_t) 0xdec0ded3dec0ded4ULL;
+       static const kernel_ulong_t bogus_idx2 =
+               (kernel_ulong_t) 0xba5e1e55deadc0deULL;
+
+       /* Invalid values */
+       do_kcmp(bogus_pid1, bogus_pid2, bogus_type, NULL, bogus_idx1,
+               bogus_idx2);
+       do_kcmp(0, 0, KCMP_SYSVSEM + 1, NULL, 0, 0);
+
+       /* KCMP_FILE is the only type which has additional args */
+       do_kcmp(3141592653U, 2718281828U, ARG_STR(KCMP_FILE), bogus_idx1,
+               bogus_idx2);
+       /* Some type without additional args */
+       do_kcmp(-1, -1, ARG_STR(KCMP_SYSVSEM), bogus_idx1, bogus_idx2);
+
+       puts("+++ exited with 0 +++");
+
+       return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_kcmp");
+
+#endif

diff --git a/tests/kcmp.test b/tests/kcmp.test
new file mode 100755 (executable)
index 0000000..d022aeb
--- /dev/null
+++ b/tests/kcmp.test
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+# Check decoding of kcmp syscall.
+
+. "${srcdir=.}/init.sh"
+run_strace_match_diff -a27