628 lines
14 KiB
C
628 lines
14 KiB
C
/* $NetBSD: kdump.c,v 1.25 1999/12/31 22:27:59 eeh Exp $ */
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)kdump.c 8.4 (Berkeley) 4/28/95";
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#else
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__RCSID("$NetBSD: kdump.c,v 1.25 1999/12/31 22:27:59 eeh Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#define _KERNEL
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#include <sys/errno.h>
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#undef _KERNEL
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#include <sys/time.h>
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#include <sys/uio.h>
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#include <sys/ktrace.h>
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#include <sys/ioctl.h>
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#include <sys/ptrace.h>
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#include <err.h>
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#include <signal.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 <unistd.h>
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#include <vis.h>
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#include "ktrace.h"
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int timestamp, decimal, fancy = 1, tail, maxdata;
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char *tracefile = DEF_TRACEFILE;
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struct ktr_header ktr_header;
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#define eqs(s1, s2) (strcmp((s1), (s2)) == 0)
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#include <sys/syscall.h>
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#include "../../sys/compat/netbsd32/netbsd32_syscall.h"
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#include "../../sys/compat/freebsd/freebsd_syscall.h"
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#include "../../sys/compat/hpux/hpux_syscall.h"
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#include "../../sys/compat/ibcs2/ibcs2_syscall.h"
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#include "../../sys/compat/linux/linux_syscall.h"
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#include "../../sys/compat/osf1/osf1_syscall.h"
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#include "../../sys/compat/sunos/sunos_syscall.h"
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#include "../../sys/compat/svr4/svr4_syscall.h"
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#include "../../sys/compat/ultrix/ultrix_syscall.h"
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#define KTRACE
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#include "../../sys/kern/syscalls.c"
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#include "../../sys/compat/netbsd32/netbsd32_syscalls.c"
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#include "../../sys/compat/freebsd/freebsd_syscalls.c"
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#include "../../sys/compat/hpux/hpux_syscalls.c"
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#include "../../sys/compat/ibcs2/ibcs2_syscalls.c"
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#include "../../sys/compat/linux/linux_syscalls.c"
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#include "../../sys/compat/osf1/osf1_syscalls.c"
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#include "../../sys/compat/sunos/sunos_syscalls.c"
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#include "../../sys/compat/svr4/svr4_syscalls.c"
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#include "../../sys/compat/ultrix/ultrix_syscalls.c"
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#include "../../sys/compat/hpux/hpux_errno.c"
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#include "../../sys/compat/svr4/svr4_errno.c"
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#include "../../sys/compat/ibcs2/ibcs2_errno.c"
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#include "../../sys/compat/linux/common/linux_errno.c"
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#undef KTRACE
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struct emulation {
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char *name; /* Emulation name */
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char **sysnames; /* Array of system call names */
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int nsysnames; /* Number of */
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int *errno; /* Array of error number mapping */
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int nerrno; /* number of elements in array */
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};
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#define NELEM(a) (sizeof(a) / sizeof(a[0]))
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static struct emulation emulations[] = {
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{ "netbsd", syscallnames, SYS_MAXSYSCALL,
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NULL, 0 },
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{ "netbsd32", netbsd32_syscallnames, SYS_MAXSYSCALL,
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NULL, 0 },
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{ "freebsd", freebsd_syscallnames, FREEBSD_SYS_MAXSYSCALL,
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NULL, 0 },
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{ "hpux", hpux_syscallnames, HPUX_SYS_MAXSYSCALL,
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native_to_hpux_errno, NELEM(native_to_hpux_errno) },
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{ "ibcs2", ibcs2_syscallnames, IBCS2_SYS_MAXSYSCALL,
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native_to_ibcs2_errno, NELEM(native_to_ibcs2_errno) },
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{ "linux", linux_syscallnames, LINUX_SYS_MAXSYSCALL,
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native_to_linux_errno, NELEM(native_to_linux_errno) },
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{ "osf1", osf1_syscallnames, OSF1_SYS_MAXSYSCALL,
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NULL, 0 },
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{ "sunos", sunos_syscallnames, SUNOS_SYS_MAXSYSCALL,
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NULL, 0 },
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{ "svr4", svr4_syscallnames, SVR4_SYS_MAXSYSCALL,
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native_to_svr4_errno, NELEM(native_to_svr4_errno) },
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{ "ultrix", ultrix_syscallnames, ULTRIX_SYS_MAXSYSCALL,
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NULL, 0 },
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{ NULL, NULL, 0,
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NULL, 0 }
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};
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struct emulation *current;
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static const char *ptrace_ops[] = {
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"PT_TRACE_ME", "PT_READ_I", "PT_READ_D", "PT_READ_U",
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"PT_WRITE_I", "PT_WRITE_D", "PT_WRITE_U", "PT_CONTINUE",
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"PT_KILL", "PT_ATTACH", "PT_DETACH",
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};
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int main __P((int, char **));
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int fread_tail __P((char *, int, int));
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void dumpheader __P((struct ktr_header *));
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void ioctldecode __P((u_long));
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void ktrsyscall __P((struct ktr_syscall *));
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void ktrsysret __P((struct ktr_sysret *));
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void ktrnamei __P((char *, int));
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void ktremul __P((char *, int));
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void ktrgenio __P((struct ktr_genio *, int));
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void ktrpsig __P((struct ktr_psig *));
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void ktrcsw __P((struct ktr_csw *));
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void usage __P((void));
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void setemul __P((char *));
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void eprint __P((int));
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char *ioctlname __P((long));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int ch, ktrlen, size;
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void *m;
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int trpoints = ALL_POINTS;
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current = &emulations[0]; /* NetBSD */
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while ((ch = getopt(argc, argv, "e:f:dlm:nRTt:")) != -1)
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switch (ch) {
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case 'e':
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setemul(optarg);
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break;
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case 'f':
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tracefile = optarg;
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break;
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case 'd':
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decimal = 1;
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break;
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case 'l':
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tail = 1;
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break;
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case 'm':
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maxdata = atoi(optarg);
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break;
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case 'n':
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fancy = 0;
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break;
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case 'R':
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timestamp = 2; /* relative timestamp */
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break;
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case 'T':
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timestamp = 1;
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break;
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case 't':
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trpoints = getpoints(optarg);
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if (trpoints < 0)
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errx(1, "unknown trace point in %s", optarg);
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break;
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default:
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usage();
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}
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argv += optind;
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argc -= optind;
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if (argc > 1)
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usage();
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m = malloc(size = 1025);
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if (m == NULL)
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errx(1, "%s", strerror(ENOMEM));
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if (!freopen(tracefile, "r", stdin))
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err(1, "%s", tracefile);
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while (fread_tail((char *)&ktr_header, sizeof(struct ktr_header), 1)) {
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if (trpoints & (1<<ktr_header.ktr_type))
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dumpheader(&ktr_header);
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if ((ktrlen = ktr_header.ktr_len) < 0)
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errx(1, "bogus length 0x%x", ktrlen);
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if (ktrlen > size) {
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m = (void *)realloc(m, ktrlen+1);
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if (m == NULL)
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errx(1, "%s", strerror(ENOMEM));
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size = ktrlen;
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}
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if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
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errx(1, "data too short");
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if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
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continue;
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switch (ktr_header.ktr_type) {
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case KTR_SYSCALL:
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ktrsyscall((struct ktr_syscall *)m);
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break;
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case KTR_SYSRET:
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ktrsysret((struct ktr_sysret *)m);
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break;
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case KTR_NAMEI:
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ktrnamei(m, ktrlen);
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break;
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case KTR_GENIO:
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ktrgenio((struct ktr_genio *)m, ktrlen);
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break;
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case KTR_PSIG:
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ktrpsig((struct ktr_psig *)m);
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break;
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case KTR_CSW:
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ktrcsw((struct ktr_csw *)m);
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break;
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case KTR_EMUL:
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ktremul(m, ktrlen);
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break;
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}
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if (tail)
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(void)fflush(stdout);
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}
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return (0);
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}
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int
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fread_tail(buf, size, num)
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char *buf;
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int num, size;
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{
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int i;
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while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
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(void)sleep(1);
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clearerr(stdin);
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}
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return (i);
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}
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void
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dumpheader(kth)
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struct ktr_header *kth;
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{
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char unknown[64], *type;
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static struct timeval prevtime;
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struct timeval temp;
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switch (kth->ktr_type) {
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case KTR_SYSCALL:
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type = "CALL";
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break;
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case KTR_SYSRET:
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type = "RET ";
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break;
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case KTR_NAMEI:
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type = "NAMI";
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break;
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case KTR_GENIO:
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type = "GIO ";
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break;
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case KTR_PSIG:
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type = "PSIG";
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break;
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case KTR_CSW:
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type = "CSW";
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break;
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case KTR_EMUL:
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type = "EMUL";
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break;
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default:
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(void)sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
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type = unknown;
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}
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(void)printf("%6d %-8.*s ", kth->ktr_pid, MAXCOMLEN, kth->ktr_comm);
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if (timestamp) {
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if (timestamp == 2) {
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timersub(&kth->ktr_time, &prevtime, &temp);
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prevtime = kth->ktr_time;
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} else
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temp = kth->ktr_time;
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(void)printf("%ld.%06ld ", temp.tv_sec, temp.tv_usec);
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}
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(void)printf("%s ", type);
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}
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void
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ioctldecode(cmd)
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u_long cmd;
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{
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char dirbuf[4], *dir = dirbuf;
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if (cmd & IOC_IN)
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*dir++ = 'W';
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if (cmd & IOC_OUT)
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*dir++ = 'R';
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*dir = '\0';
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printf(decimal ? ",_IO%s('%c',%ld" : ",_IO%s('%c',%#lx",
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dirbuf, (cmd >> 8) & 0xff, cmd & 0xff);
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if ((cmd & IOC_VOID) == 0)
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printf(decimal ? ",%ld)" : ",%#lx)", (cmd >> 16) & 0xff);
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else
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printf(")");
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}
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void
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ktrsyscall(ktr)
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struct ktr_syscall *ktr;
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{
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int argsize = ktr->ktr_argsize;
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register_t *ap;
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if (ktr->ktr_code >= current->nsysnames || ktr->ktr_code < 0)
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(void)printf("[%d]", ktr->ktr_code);
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else
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(void)printf("%s", current->sysnames[ktr->ktr_code]);
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ap = (register_t *)((char *)ktr + sizeof(struct ktr_syscall));
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if (argsize) {
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char c = '(';
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if (fancy) {
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if (ktr->ktr_code == SYS_ioctl) {
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char *cp;
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if (decimal)
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(void)printf("(%ld", (long)*ap);
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else
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(void)printf("(%#lx", (long)*ap);
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ap++;
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argsize -= sizeof(register_t);
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if ((cp = ioctlname(*ap)) != NULL)
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(void)printf(",%s", cp);
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else
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ioctldecode(*ap);
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c = ',';
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ap++;
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argsize -= sizeof(register_t);
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} else if (ktr->ktr_code == SYS_ptrace) {
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if (*ap >= 0 && *ap <=
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sizeof(ptrace_ops) / sizeof(ptrace_ops[0]))
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(void)printf("(%s", ptrace_ops[*ap]);
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else
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(void)printf("(%ld", (long)*ap);
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c = ',';
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ap++;
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argsize -= sizeof(register_t);
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}
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}
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while (argsize) {
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if (decimal)
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(void)printf("%c%ld", c, (long)*ap);
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else
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(void)printf("%c%#lx", c, (long)*ap);
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c = ',';
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ap++;
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argsize -= sizeof(register_t);
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}
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(void)putchar(')');
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}
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(void)putchar('\n');
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}
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void
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ktrsysret(ktr)
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struct ktr_sysret *ktr;
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{
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register_t ret = ktr->ktr_retval;
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int error = ktr->ktr_error;
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int code = ktr->ktr_code;
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if (code >= current->nsysnames || code < 0)
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(void)printf("[%d] ", code);
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else
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(void)printf("%s ", current->sysnames[code]);
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switch (error) {
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case 0:
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if (fancy) {
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(void)printf("%ld", (long)ret);
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if (ret < 0 || ret > 9)
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(void)printf("/%#lx", (long)ret);
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} else {
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if (decimal)
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(void)printf("%ld", (long)ret);
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else
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(void)printf("%#lx", (long)ret);
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}
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break;
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default:
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eprint(error);
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break;
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}
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(void)putchar('\n');
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}
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/*
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* We print the original emulation's error numerically, but we
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* translate it to netbsd to print it symbolically.
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*/
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void
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eprint(e)
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int e;
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{
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int i = e;
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if (current->errno) {
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/* No remapping for ERESTART and EJUSTRETURN */
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/* Kludge for linux that has negative error numbers */
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if (current->errno[2] > 0 && e < 0)
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goto normal;
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for (i = 0; i < current->nerrno; i++)
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if (e == current->errno[i])
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break;
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if (i == current->nerrno) {
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printf("-1 unknown errno %d", e);
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return;
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}
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}
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normal:
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switch (i) {
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case ERESTART:
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(void)printf("RESTART");
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break;
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case EJUSTRETURN:
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(void)printf("JUSTRETURN");
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break;
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default:
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(void)printf("-1 errno %d", e);
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if (fancy)
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(void)printf(" %s", strerror(i));
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}
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}
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void
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ktrnamei(cp, len)
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char *cp;
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int len;
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{
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(void)printf("\"%.*s\"\n", len, cp);
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}
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void
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ktremul(cp, len)
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char *cp;
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int len;
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{
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char name[1024];
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if (len >= sizeof(name))
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errx(1, "Emulation name too long");
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strncpy(name, cp, len);
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name[len] = '\0';
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(void)printf("\"%s\"\n", name);
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setemul(name);
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}
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void
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ktrgenio(ktr, len)
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struct ktr_genio *ktr;
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int len;
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{
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int datalen = len - sizeof (struct ktr_genio);
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char *dp = (char *)ktr + sizeof (struct ktr_genio);
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char *cp;
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int col = 0;
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int width;
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char visbuf[5];
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static int screenwidth = 0;
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|
|
if (screenwidth == 0) {
|
|
struct winsize ws;
|
|
|
|
if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
|
|
ws.ws_col > 8)
|
|
screenwidth = ws.ws_col;
|
|
else
|
|
screenwidth = 80;
|
|
}
|
|
printf("fd %d %s %d bytes\n", ktr->ktr_fd,
|
|
ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen);
|
|
if (maxdata && datalen > maxdata)
|
|
datalen = maxdata;
|
|
(void)printf(" \"");
|
|
col = 8;
|
|
for (; datalen > 0; datalen--, dp++) {
|
|
(void) vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
|
|
cp = visbuf;
|
|
/*
|
|
* Keep track of printables and
|
|
* space chars (like fold(1)).
|
|
*/
|
|
if (col == 0) {
|
|
(void)putchar('\t');
|
|
col = 8;
|
|
}
|
|
switch(*cp) {
|
|
case '\n':
|
|
col = 0;
|
|
(void)putchar('\n');
|
|
continue;
|
|
case '\t':
|
|
width = 8 - (col&07);
|
|
break;
|
|
default:
|
|
width = strlen(cp);
|
|
}
|
|
if (col + width > (screenwidth-2)) {
|
|
(void)printf("\\\n\t");
|
|
col = 8;
|
|
}
|
|
col += width;
|
|
do {
|
|
(void)putchar(*cp++);
|
|
} while (*cp);
|
|
}
|
|
if (col == 0)
|
|
(void)printf(" ");
|
|
(void)printf("\"\n");
|
|
}
|
|
|
|
void
|
|
ktrpsig(psig)
|
|
struct ktr_psig *psig;
|
|
{
|
|
int signo, first;
|
|
|
|
(void)printf("SIG%s ", sys_signame[psig->signo]);
|
|
if (psig->action == SIG_DFL)
|
|
(void)printf("SIG_DFL\n");
|
|
else {
|
|
(void)printf("caught handler=0x%lx mask=(",
|
|
(u_long)psig->action);
|
|
first = 1;
|
|
for (signo = 1; signo < NSIG; signo++) {
|
|
if (sigismember(&psig->mask, signo)) {
|
|
if (first)
|
|
first = 0;
|
|
else
|
|
(void)printf(",");
|
|
(void)printf("%d", signo);
|
|
}
|
|
}
|
|
(void)printf(") code=0x%x\n", psig->code);
|
|
}
|
|
}
|
|
|
|
void
|
|
ktrcsw(cs)
|
|
struct ktr_csw *cs;
|
|
{
|
|
|
|
(void)printf("%s %s\n", cs->out ? "stop" : "resume",
|
|
cs->user ? "user" : "kernel");
|
|
}
|
|
|
|
void
|
|
usage()
|
|
{
|
|
|
|
(void)fprintf(stderr,
|
|
"usage: kdump [-dnlRT] [-e emulation] [-f trfile] [-m maxdata] [-t [cnis]]\n");
|
|
exit(1);
|
|
}
|
|
|
|
void
|
|
setemul(name)
|
|
char *name;
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; emulations[i].name != NULL; i++)
|
|
if (strcmp(emulations[i].name, name) == 0) {
|
|
current = &emulations[i];
|
|
return;
|
|
}
|
|
warnx("Emulation `%s' unknown", name);
|
|
}
|