166 lines
5.2 KiB
C
166 lines
5.2 KiB
C
/*
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* Check decoding of successful PERF_EVENT_IOC_{ID,QUERY_BPF} ioctls.
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*
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* Copyright (c) 2018 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#ifdef HAVE_LINUX_PERF_EVENT_H
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# include <assert.h>
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# include <inttypes.h>
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# include <stdio.h>
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# include <stdlib.h>
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# include <string.h>
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# include <sys/ioctl.h>
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# include <linux/perf_event.h>
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# ifndef PERF_EVENT_IOC_ID
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# define PERF_EVENT_IOC_ID _IOR('$', 7, void *)
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# endif
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# ifndef PERF_EVENT_IOC_QUERY_BPF
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# define PERF_EVENT_IOC_QUERY_BPF _IOWR('$', 10, void *)
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struct perf_event_query_bpf {
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uint32_t ids_len;
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uint32_t prog_cnt;
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uint32_t ids[0];
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};
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# endif
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int
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main(int argc, char **argv)
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{
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static const uint64_t magic64 = 0xfacefeeddeadc0deULL;
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TAIL_ALLOC_OBJECT_CONST_PTR(uint64_t, u64_ptr);
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uint64_t *const u64_efault = u64_ptr + 1;
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uint32_t *const u32_arr = tail_alloc(sizeof(uint32_t) * 4);
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uint32_t *const u32_efault = u32_arr + 4;
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unsigned long num_skip;
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long inject_retval;
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bool locked = false;
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*u64_ptr = magic64;
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if (argc == 1)
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return 0;
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if (argc < 3)
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error_msg_and_fail("Usage: %s NUM_SKIP INJECT_RETVAL", argv[0]);
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num_skip = strtoul(argv[1], NULL, 0);
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inject_retval = strtol(argv[2], NULL, 0);
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if (inject_retval < 0)
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error_msg_and_fail("Expected non-negative INJECT_RETVAL, "
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"but got %ld", inject_retval);
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for (unsigned long i = 0; i < num_skip; i++) {
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long ret = ioctl(-1, PERF_EVENT_IOC_ID, NULL);
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printf("ioctl(-1, PERF_EVENT_IOC_ID, NULL) = %s%s\n",
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sprintrc(ret),
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ret == inject_retval ? " (INJECTED)" : "");
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if (ret != inject_retval)
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continue;
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locked = true;
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break;
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}
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if (!locked)
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error_msg_and_fail("Hasn't locked on ioctl(-1"
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", PERF_EVENT_IOC_ID, NULL) returning %lu",
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inject_retval);
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/* PERF_EVENT_IOC_ID */
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assert(ioctl(-1, PERF_EVENT_IOC_ID, NULL) == inject_retval);
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printf("ioctl(-1, PERF_EVENT_IOC_ID, NULL) = %ld (INJECTED)\n",
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inject_retval);
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assert(ioctl(-1, PERF_EVENT_IOC_ID, u64_efault) == inject_retval);
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printf("ioctl(-1, PERF_EVENT_IOC_ID, %p) = %ld (INJECTED)\n",
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u64_efault, inject_retval);
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assert(ioctl(-1, PERF_EVENT_IOC_ID, u64_ptr) == inject_retval);
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printf("ioctl(-1, PERF_EVENT_IOC_ID, [%" PRIu64 "]) = %ld (INJECTED)\n",
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magic64, inject_retval);
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/* PERF_EVENT_IOC_QUERY_BPF */
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assert(ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, NULL) == inject_retval);
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printf("ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, NULL) = %ld (INJECTED)\n",
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inject_retval);
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assert(ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, u32_efault)
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== inject_retval);
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printf("ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, %p) = %ld (INJECTED)\n",
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u32_efault, inject_retval);
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u32_arr[3] = 0xdeadbeef;
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assert(ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, u32_arr + 3)
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== inject_retval);
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printf("ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, {ids_len=3735928559, ...}) "
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"= %ld (INJECTED)\n",
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inject_retval);
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u32_arr[2] = 0xdecaffed;
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assert(ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, u32_arr + 2)
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== inject_retval);
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printf("ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, {ids_len=3737845741"
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", prog_cnt=3735928559, ids=%p})"
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" = %ld (INJECTED)\n",
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u32_efault, inject_retval);
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u32_arr[0] = 0xbadc0ded;
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u32_arr[1] = 5;
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assert(ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, u32_arr) == inject_retval);
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printf("ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, {ids_len=3134983661"
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", prog_cnt=5, ids=[3737845741, 3735928559, ... /* %p */]})"
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" = %ld (INJECTED)\n",
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u32_efault, inject_retval);
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u32_arr[1] = 2;
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assert(ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, u32_arr) == inject_retval);
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printf("ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, {ids_len=3134983661"
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", prog_cnt=2, ids=[3737845741, 3735928559]})"
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" = %ld (INJECTED)\n",
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inject_retval);
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puts("+++ exited with 0 +++");
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return 0;
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}
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#else
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SKIP_MAIN_UNDEFINED("HAVE_LINUX_PERF_EVENT_H");
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#endif
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