48235c377f
Instead of trying to partially ifdef out ktrace handling, define the missing identifier to 0. Without this fix lack of ktrace in the kernel also means there is no SIGXFSZ signal delivery.
328 lines
8.5 KiB
C
328 lines
8.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ktrace.h 8.1 (Berkeley) 6/2/93
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* $FreeBSD$
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*/
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#ifndef _SYS_KTRACE_H_
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#define _SYS_KTRACE_H_
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#include <sys/caprights.h>
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/*
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* operations to ktrace system call (KTROP(op))
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*/
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#define KTROP_SET 0 /* set trace points */
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#define KTROP_CLEAR 1 /* clear trace points */
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#define KTROP_CLEARFILE 2 /* stop all tracing to file */
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#define KTROP(o) ((o)&3) /* macro to extract operation */
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/*
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* flags (ORed in with operation)
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*/
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#define KTRFLAG_DESCEND 4 /* perform op on all children too */
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/*
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* ktrace record header
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*/
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struct ktr_header {
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int ktr_len; /* length of buf */
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short ktr_type; /* trace record type */
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pid_t ktr_pid; /* process id */
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char ktr_comm[MAXCOMLEN + 1];/* command name */
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struct timeval ktr_time; /* timestamp */
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intptr_t ktr_tid; /* was ktr_buffer */
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};
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/*
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* Test for kernel trace point (MP SAFE).
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*
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* KTRCHECK() just checks that the type is enabled and is only for
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* internal use in the ktrace subsystem. KTRPOINT() checks against
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* ktrace recursion as well as checking that the type is enabled and
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* is the public interface.
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*/
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#define KTRCHECK(td, type) ((td)->td_proc->p_traceflag & (1 << type))
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#define KTRPOINT(td, type) (__predict_false(KTRCHECK((td), (type))))
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#define KTRCHECKDRAIN(td) (!(STAILQ_EMPTY(&(td)->td_proc->p_ktr)))
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#define KTRUSERRET(td) do { \
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if (__predict_false(KTRCHECKDRAIN(td))) \
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ktruserret(td); \
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} while (0)
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/*
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* ktrace record types
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*/
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/*
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* KTR_SYSCALL - system call record
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*/
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#define KTR_SYSCALL 1
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struct ktr_syscall {
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short ktr_code; /* syscall number */
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short ktr_narg; /* number of arguments */
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/*
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* followed by ktr_narg register_t
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*/
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register_t ktr_args[1];
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};
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/*
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* KTR_SYSRET - return from system call record
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*/
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#define KTR_SYSRET 2
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struct ktr_sysret {
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short ktr_code;
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short ktr_eosys;
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int ktr_error;
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register_t ktr_retval;
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};
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/*
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* KTR_NAMEI - namei record
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*/
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#define KTR_NAMEI 3
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/* record contains pathname */
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/*
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* KTR_GENIO - trace generic process i/o
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*/
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#define KTR_GENIO 4
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struct ktr_genio {
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int ktr_fd;
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enum uio_rw ktr_rw;
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/*
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* followed by data successfully read/written
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*/
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};
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/*
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* KTR_PSIG - trace processed signal
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*/
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#define KTR_PSIG 5
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struct ktr_psig {
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int signo;
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sig_t action;
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int code;
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sigset_t mask;
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};
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/*
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* KTR_CSW - trace context switches
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*/
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#define KTR_CSW 6
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struct ktr_csw_old {
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int out; /* 1 if switch out, 0 if switch in */
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int user; /* 1 if usermode (ivcsw), 0 if kernel (vcsw) */
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};
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struct ktr_csw {
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int out; /* 1 if switch out, 0 if switch in */
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int user; /* 1 if usermode (ivcsw), 0 if kernel (vcsw) */
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char wmesg[8];
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};
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/*
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* KTR_USER - data coming from userland
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*/
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#define KTR_USER_MAXLEN 2048 /* maximum length of passed data */
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#define KTR_USER 7
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/*
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* KTR_STRUCT - misc. structs
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*/
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#define KTR_STRUCT 8
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/*
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* record contains null-terminated struct name followed by
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* struct contents
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*/
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struct sockaddr;
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struct stat;
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struct sysentvec;
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/*
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* KTR_SYSCTL - name of a sysctl MIB
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*/
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#define KTR_SYSCTL 9
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/* record contains null-terminated MIB name */
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/*
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* KTR_PROCCTOR - trace process creation (multiple ABI support)
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*/
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#define KTR_PROCCTOR 10
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struct ktr_proc_ctor {
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u_int sv_flags; /* struct sysentvec sv_flags copy */
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};
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/*
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* KTR_PROCDTOR - trace process destruction (multiple ABI support)
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*/
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#define KTR_PROCDTOR 11
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/*
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* KTR_CAPFAIL - trace capability check failures
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*/
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#define KTR_CAPFAIL 12
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enum ktr_cap_fail_type {
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CAPFAIL_NOTCAPABLE, /* insufficient capabilities in cap_check() */
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CAPFAIL_INCREASE, /* attempt to increase capabilities */
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CAPFAIL_SYSCALL, /* disallowed system call */
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CAPFAIL_LOOKUP, /* disallowed VFS lookup */
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};
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struct ktr_cap_fail {
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enum ktr_cap_fail_type cap_type;
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cap_rights_t cap_needed;
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cap_rights_t cap_held;
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};
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/*
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* KTR_FAULT - page fault record
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*/
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#define KTR_FAULT 13
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struct ktr_fault {
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vm_offset_t vaddr;
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int type;
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};
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/*
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* KTR_FAULTEND - end of page fault record
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*/
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#define KTR_FAULTEND 14
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struct ktr_faultend {
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int result;
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};
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/*
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* KTR_STRUCT_ARRAY - array of misc. structs
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*/
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#define KTR_STRUCT_ARRAY 15
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struct ktr_struct_array {
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size_t struct_size;
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/*
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* Followed by null-terminated structure name and then payload
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* contents.
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*/
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};
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/*
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* KTR_DROP - If this bit is set in ktr_type, then at least one event
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* between the previous record and this record was dropped.
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*/
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#define KTR_DROP 0x8000
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/*
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* kernel trace points (in p_traceflag)
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*/
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#define KTRFAC_MASK 0x00ffffff
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#define KTRFAC_SYSCALL (1<<KTR_SYSCALL)
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#define KTRFAC_SYSRET (1<<KTR_SYSRET)
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#define KTRFAC_NAMEI (1<<KTR_NAMEI)
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#define KTRFAC_GENIO (1<<KTR_GENIO)
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#define KTRFAC_PSIG (1<<KTR_PSIG)
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#define KTRFAC_CSW (1<<KTR_CSW)
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#define KTRFAC_USER (1<<KTR_USER)
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#define KTRFAC_STRUCT (1<<KTR_STRUCT)
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#define KTRFAC_SYSCTL (1<<KTR_SYSCTL)
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#define KTRFAC_PROCCTOR (1<<KTR_PROCCTOR)
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#define KTRFAC_PROCDTOR (1<<KTR_PROCDTOR)
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#define KTRFAC_CAPFAIL (1<<KTR_CAPFAIL)
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#define KTRFAC_FAULT (1<<KTR_FAULT)
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#define KTRFAC_FAULTEND (1<<KTR_FAULTEND)
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#define KTRFAC_STRUCT_ARRAY (1<<KTR_STRUCT_ARRAY)
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/*
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* trace flags (also in p_traceflags)
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*/
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#define KTRFAC_ROOT 0x80000000 /* root set this trace */
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#define KTRFAC_INHERIT 0x40000000 /* pass trace flags to children */
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#define KTRFAC_DROP 0x20000000 /* last event was dropped */
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#ifdef _KERNEL
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struct ktr_io_params;
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#ifdef KTRACE
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struct vnode *ktr_get_tracevp(struct proc *, bool);
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#else
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static inline struct vnode *
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ktr_get_tracevp(struct proc *p, bool ref)
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{
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return (NULL);
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}
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#endif
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void ktr_io_params_free(struct ktr_io_params *);
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void ktrnamei(const char *);
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void ktrcsw(int, int, const char *);
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void ktrpsig(int, sig_t, sigset_t *, int);
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void ktrfault(vm_offset_t, int);
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void ktrfaultend(int);
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void ktrgenio(int, enum uio_rw, struct uio *, int);
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void ktrsyscall(int, int narg, register_t args[]);
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void ktrsysctl(int *name, u_int namelen);
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void ktrsysret(int, int, register_t);
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void ktrprocctor(struct proc *);
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struct ktr_io_params *ktrprocexec(struct proc *);
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void ktrprocexit(struct thread *);
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void ktrprocfork(struct proc *, struct proc *);
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void ktruserret(struct thread *);
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void ktrstruct(const char *, const void *, size_t);
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void ktrstruct_error(const char *, const void *, size_t, int);
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void ktrstructarray(const char *, enum uio_seg, const void *, int, size_t);
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void ktrcapfail(enum ktr_cap_fail_type, const cap_rights_t *,
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const cap_rights_t *);
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#define ktrcaprights(s) \
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ktrstruct("caprights", (s), sizeof(cap_rights_t))
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#define ktritimerval(s) \
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ktrstruct("itimerval", (s), sizeof(struct itimerval))
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#define ktrsockaddr(s) \
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ktrstruct("sockaddr", (s), ((struct sockaddr *)(s))->sa_len)
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#define ktrstat(s) \
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ktrstruct("stat", (s), sizeof(struct stat))
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#define ktrstat_error(s, error) \
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ktrstruct_error("stat", (s), sizeof(struct stat), error)
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extern u_int ktr_geniosize;
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#ifdef KTRACE
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extern int ktr_filesize_limit_signal;
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#else
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#define ktr_filesize_limit_signal 0
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#endif
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#else
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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int ktrace(const char *, int, int, pid_t);
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int utrace(const void *, size_t);
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__END_DECLS
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#endif
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#endif
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