Dmitry V. Levin
b93d52fe3d
strace is now provided under the terms of the GNU Lesser General Public License version 2.1 or later, see COPYING for more details. strace test suite is now provided under the terms of the GNU General Public License version 2 or later, see tests/COPYING for more details.
134 lines
2.5 KiB
C
134 lines
2.5 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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* SPDX-License-Identifier: LGPL-2.1-or-later
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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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