154 lines
3.9 KiB
C
154 lines
3.9 KiB
C
/*
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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 "defs.h"
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#include <linux/ioctl.h>
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#include "perf_event_struct.h"
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#define XLAT_MACROS_ONLY
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# include "xlat/perf_ioctl_cmds.h"
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#undef XLAT_MACROS_ONLY
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#include "xlat/perf_ioctl_flags.h"
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#include MPERS_DEFS
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static int
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perf_ioctl_query_bpf(struct tcb *const tcp, const kernel_ulong_t arg)
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{
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uint32_t info;
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if (entering(tcp)) {
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tprints(", ");
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if (umove_or_printaddr(tcp, arg, &info))
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return RVAL_IOCTL_DECODED;
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tprintf("{ids_len=%u, ", info);
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return 0;
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}
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if (syserror(tcp) ||
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umove(tcp, arg + offsetof(struct perf_event_query_bpf, prog_cnt),
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&info)) {
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tprints("...}");
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return RVAL_IOCTL_DECODED;
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}
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tprintf("prog_cnt=%u, ids=", info);
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print_array(tcp, arg + offsetof(struct perf_event_query_bpf, ids), info,
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&info, sizeof(info),
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tfetch_mem, print_uint32_array_member, NULL);
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tprints("}");
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return RVAL_IOCTL_DECODED;
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}
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static int
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perf_ioctl_modify_attributes(struct tcb *const tcp, const kernel_ulong_t arg)
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{
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tprints(", ");
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if (!fetch_perf_event_attr(tcp, arg))
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print_perf_event_attr(tcp, arg);
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return RVAL_IOCTL_DECODED;
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}
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MPERS_PRINTER_DECL(int, perf_ioctl,
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struct tcb *const tcp, const unsigned int code,
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const kernel_ulong_t arg)
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{
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switch (code) {
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case PERF_EVENT_IOC_ENABLE:
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case PERF_EVENT_IOC_DISABLE:
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case PERF_EVENT_IOC_RESET:
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tprints(", ");
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printflags(perf_ioctl_flags, arg, "PERF_IOC_FLAG_???");
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return RVAL_IOCTL_DECODED;
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case PERF_EVENT_IOC_REFRESH:
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tprintf(", %d", (int) arg);
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return RVAL_IOCTL_DECODED;
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case PERF_EVENT_IOC_PERIOD:
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tprints(", ");
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printnum_int64(tcp, arg, "%" PRIu64);
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return RVAL_IOCTL_DECODED;
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case PERF_EVENT_IOC_SET_OUTPUT:
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case PERF_EVENT_IOC_SET_BPF:
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tprintf(", ");
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printfd(tcp, (int) arg);
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return RVAL_IOCTL_DECODED;
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case PERF_EVENT_IOC_PAUSE_OUTPUT:
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tprintf(", %" PRI_klu, arg);
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return RVAL_IOCTL_DECODED;
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/*
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* The following ioctl requests are personality-specific
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* due to the pointer size.
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*/
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case PERF_EVENT_IOC_SET_FILTER:
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tprints(", ");
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printstr_ex(tcp, arg, get_pagesize(), QUOTE_0_TERMINATED);
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return RVAL_IOCTL_DECODED;
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case PERF_EVENT_IOC_ID:
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if (entering(tcp)) {
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tprints(", ");
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return 0;
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}
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printnum_int64(tcp, arg, "%" PRIu64);
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return RVAL_IOCTL_DECODED;
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case PERF_EVENT_IOC_QUERY_BPF:
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return perf_ioctl_query_bpf(tcp, arg);
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case PERF_EVENT_IOC_MODIFY_ATTRIBUTES:
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return perf_ioctl_modify_attributes(tcp, arg);
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default:
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return RVAL_DECODED;
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}
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}
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