| /* |
| * Check decoding of perf_event_open syscall. |
| * |
| * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com> |
| * Copyright (c) 2016-2017 The strace developers. |
| * 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) |
| { |
| TAIL_ALLOC_OBJECT_CONST_PTR(struct perf_event_attr, 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 |