tests: check decoding of perf_event_open syscall

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

diff --git a/tests/.gitignore b/tests/.gitignore
index 8c41bea6b75fd3ad196b0bca39c6a61d1ebd97d5..84a795d0f6c4d5e155c54c091cddc0cadea6243c 100644 (file)
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -170,6 +170,7 @@ open
 openat
 pause
 pc
+perf_event_open
 personality
 pipe
 poll

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 0b3b818d10b0e2746f79eb3862181a26c47f6215..3e3d073e5014a2b40a72238df9ec4dd73a9fd06c 100644 (file)
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -227,6 +227,7 @@ check_PROGRAMS = \
        openat \
        pause \
        pc \
+       perf_event_open \
        personality \
        pipe \
        poll \
@@ -555,6 +556,7 @@ DECODER_TESTS = \
        open.test \
        openat.test \
        pause.test \
+       perf_event_open.test \
        personality.test \
        pipe.test \
        poll.test \

diff --git a/tests/perf_event_open.c b/tests/perf_event_open.c
new file mode 100644 (file)
index 0000000..72f5d3c
--- /dev/null
+++ b/tests/perf_event_open.c
@@ -0,0 +1,113 @@
+/*
+ * Check decoding of perf_event_open syscall.
+ *
+ * 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>
+
+#if defined(__NR_perf_event_open) && defined(HAVE_LINUX_PERF_EVENT_H)
+
+# include <limits.h>
+# include <stdio.h>
+# include <unistd.h>
+
+# include <linux/perf_event.h>
+
+# include "xlat.h"
+# include "xlat/perf_event_open_flags.h"
+
+#if ULONG_MAX > UINT_MAX
+#define LONG_STR_PREFIX "ffffffff"
+#else
+#define LONG_STR_PREFIX ""
+#endif
+
+static const char *printaddr(void *ptr)
+{
+       static char buf[sizeof("0x") + sizeof(void *) * 2];
+
+       if (ptr == NULL)
+               return "NULL";
+
+       snprintf(buf, sizeof(buf), "%#lx", (unsigned long)ptr);
+
+       return buf;
+}
+
+int
+main(void)
+{
+       struct perf_event_attr *attr = tail_alloc(sizeof(*attr));
+
+       attr->type = PERF_TYPE_HARDWARE;
+       attr->size = sizeof(*attr);
+
+       struct {
+               struct perf_event_attr *attr;
+               pid_t pid;
+               int cpu;
+               int group_fd;
+               unsigned long flags;
+               const char *flags_str;
+       } args[] = {
+               { NULL,     0xfacef00d, 0xbadabba7, -1,
+                       (unsigned long) 0xFFFFFFFFFFFFFFFFLLU,
+                       "PERF_FLAG_FD_NO_GROUP|PERF_FLAG_FD_OUTPUT|"
+                       "PERF_FLAG_PID_CGROUP|PERF_FLAG_FD_CLOEXEC|"
+                       "0x" LONG_STR_PREFIX "fffffff0"
+                       },
+               { attr + 1, 0,          0,          0,
+                       0, "0" },
+               { attr,     -1,         -1,         1,
+                       PERF_FLAG_FD_CLOEXEC, "PERF_FLAG_FD_CLOEXEC" },
+               { attr - 1, -100,       100,        0xface1e55,
+                       PERF_FLAG_FD_NO_GROUP | PERF_FLAG_FD_OUTPUT |
+                       PERF_FLAG_PID_CGROUP | PERF_FLAG_FD_CLOEXEC,
+                       "PERF_FLAG_FD_NO_GROUP|PERF_FLAG_FD_OUTPUT|"
+                       "PERF_FLAG_PID_CGROUP|PERF_FLAG_FD_CLOEXEC" },
+       };
+       size_t i;
+       int rc;
+
+       for (i = 0; i < ARRAY_SIZE(args); i++) {
+               rc = syscall(__NR_perf_event_open, args[i].attr, args[i].pid,
+                       args[i].cpu, args[i].group_fd, args[i].flags);
+               printf("perf_event_open(%s, %d, %d, %d, %s) = %s\n",
+                       printaddr(args[i].attr), args[i].pid, args[i].cpu,
+                       args[i].group_fd, args[i].flags_str, sprintrc(rc));
+       }
+
+       puts("+++ exited with 0 +++");
+       return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_perf_event_open && HAVE_LINUX_PERF_EVENT_H");
+
+#endif

diff --git a/tests/perf_event_open.test b/tests/perf_event_open.test
new file mode 100755 (executable)
index 0000000..0e46556
--- /dev/null
+++ b/tests/perf_event_open.test
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+# Check decoding of perf_event_open syscall.
+
+. "${srcdir=.}/init.sh"
+run_strace_match_diff -a34