546 lines
13 KiB
C
546 lines
13 KiB
C
/* $NetBSD: dump.c,v 1.17 2003/11/19 05:20:50 gson 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. 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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#endif
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__RCSID("$NetBSD: dump.c,v 1.17 2003/11/19 05:20:50 gson Exp $");
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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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#define _KERNEL
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#include <sys/errno.h>
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#undef _KERNEL
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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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#include "misc.h"
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#include "setemul.h"
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int timestamp, decimal, fancy = 1, tail, maxdata;
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#define eqs(s1, s2) (strcmp((s1), (s2)) == 0)
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#include <sys/syscall.h>
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static const char * const 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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void dumprecord __P((struct ktr_header *, int, int *, void **, FILE *));
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void dumpheader __P((struct ktr_header *, char *, int, int *));
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int fread_tail __P((char *, int, int, FILE *));
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void ioctldecode __P((u_long));
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int ktrsyscall __P((struct ktr_syscall *, int, char *, int, int *));
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void ktrsysret __P((struct ktr_sysret *, char *, int, int *));
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void ktrnamei __P((char *, int, char *, int, int *));
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void ktremul __P((struct ktr_header *, char *, int, char *, int, int *));
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void ktrgenio __P((struct ktr_genio *, int, char *, int, 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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#define KTR_BUFSZ 512
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#define BLEFT (bufsz - (bp - buff))
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void
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dumprecord(ktr, trpoints, sizep, mp, fp)
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register struct ktr_header *ktr;
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int trpoints;
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int *sizep;
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void **mp;
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FILE *fp;
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{
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static void *mcopy = NULL;
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static int linelen = 0, iolinelen = 0;
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char buff[KTR_BUFSZ], iobuff[KTR_BUFSZ], *bp;
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int ktrlen, *lenp;
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void *m;
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if (ktr->ktr_type == KTR_GENIO || ktr->ktr_type == KTR_EMUL) {
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bp = iobuff;
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lenp = &iolinelen;
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} else {
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bp = buff;
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lenp = &linelen;
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}
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if (!mcopy && (trpoints & (1<<ktr->ktr_type)))
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dumpheader(ktr, bp, KTR_BUFSZ, lenp);
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if ((ktrlen = ktr->ktr_len) < 0)
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errx(1, "bogus length 0x%x", ktrlen);
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m = *mp;
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if (ktrlen >= *sizep) {
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while(ktrlen > *sizep) *sizep *= 2;
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*mp = m = (void *)realloc(m, *sizep);
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if (m == NULL)
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errx(1, "realloc: %s", strerror(ENOMEM));
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}
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if (ktrlen && fread_tail(m, ktrlen, 1, fp) == 0)
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errx(1, "data too short");
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if ((trpoints & (1<<ktr->ktr_type)) == 0)
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return;
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/* update context to match currently processed record */
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ectx_sanify(ktr->ktr_pid);
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switch (ktr->ktr_type)
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{
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case KTR_SYSCALL:
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if (ktrsyscall((struct ktr_syscall *)m, 0, bp, KTR_BUFSZ,
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lenp) == 0) {
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mcopy = (void *)malloc(ktrlen + 1);
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bcopy(m, mcopy, ktrlen);
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return;
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}
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break;
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case KTR_SYSRET:
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ktrsysret((struct ktr_sysret *)m, bp, KTR_BUFSZ, lenp);
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if (*iobuff || iolinelen) {
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fputs(iobuff, stdout);
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*iobuff = '\0';
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iolinelen = 0;
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}
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break;
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case KTR_NAMEI:
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ktrnamei(m, ktrlen, bp, sizeof(buff), lenp);
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if (mcopy) {
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(void) ktrsyscall((struct ktr_syscall *)mcopy, 1, bp,
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KTR_BUFSZ, lenp);
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free(mcopy);
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mcopy = NULL;
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}
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break;
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case KTR_GENIO:
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ktrgenio((struct ktr_genio *)m, ktrlen, bp, KTR_BUFSZ, lenp);
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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(ktr, m, ktrlen, bp, sizeof(buff), lenp);
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break;
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}
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if (mcopy) {
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free(mcopy);
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mcopy = NULL;
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}
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}
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void
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dumpfile(file, fd, trpoints)
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const char *file;
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int fd;
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int trpoints;
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{
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struct ktr_header ktr_header;
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void *m;
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FILE *fp;
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int size;
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m = (void *)malloc(size = 1024);
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if (m == NULL)
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errx(1, "malloc: %s", strerror(ENOMEM));
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if (!file || !*file) {
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if (!(fp = fdopen(fd, "r")))
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err(1, "fdopen(%d)", fd);
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} else if (!strcmp(file, "-"))
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fp = stdin;
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else if (!(fp = fopen(file, "r")))
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err(1, "%s", file);
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while (fread_tail((char *)&ktr_header,sizeof(struct ktr_header),1,fp)) {
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dumprecord(&ktr_header, trpoints, &size, &m, fp);
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if (tail)
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(void)fflush(stdout);
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}
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}
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int
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fread_tail(buf, size, num, fp)
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char *buf;
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int num, size;
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FILE *fp;
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{
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int i;
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while ((i = fread(buf, size, num, fp)) == 0 && tail) {
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(void)sleep(1);
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clearerr(fp);
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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, buff, buffsz, lenp)
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struct ktr_header *kth;
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char *buff;
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int buffsz, *lenp;
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{
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static struct timeval prevtime;
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char *bp = buff + *lenp;
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struct timeval temp;
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if (kth->ktr_type == KTR_SYSRET || kth->ktr_type == KTR_GENIO)
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return;
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*lenp = 0;
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(void)snprintf(bp, buffsz - *lenp, "%6d %-8.*s ",
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kth->ktr_pid, MAXCOMLEN, kth->ktr_comm);
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*lenp += strlen(bp);
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bp = buff + *lenp;
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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)snprintf(bp, buffsz - *lenp, "%ld.%06ld ",
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(long int)temp.tv_sec,
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(long int)temp.tv_usec);
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*lenp += strlen(bp);
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}
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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_OUT)
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*dir++ = 'W';
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if (cmd & IOC_IN)
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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, (int) ((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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int
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ktrsyscall(ktr, nohdr, buff, bufsz, lenp)
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register struct ktr_syscall *ktr;
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int nohdr, bufsz, *lenp;
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char *buff;
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{
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register int argsize = ktr->ktr_argsize;
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register register_t *ap;
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char *bp = buff;
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int eol = 1;
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if (*lenp < bufsz) {
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bp += *lenp;
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bzero(bp, BLEFT);
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}
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if (!nohdr) {
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if (ktr->ktr_code >= cur_emul->nsysnames || ktr->ktr_code < 0)
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(void)snprintf(bp, BLEFT, "[%d]", ktr->ktr_code);
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else
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(void)snprintf(bp, BLEFT,
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"%s", cur_emul->sysnames[ktr->ktr_code]);
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bp += strlen(bp);
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}
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ap = (register_t *)((char *)ktr + sizeof(struct ktr_syscall));
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if (argsize) {
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char *s = "(";
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if (fancy && !nohdr) {
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switch (ktr->ktr_code) {
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/*
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* All these have a path as the first param.
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* The order is same as syscalls.master.
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*/
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case SYS_open:
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case SYS_link:
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case SYS_unlink:
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case SYS_chdir:
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case SYS_mknod:
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case SYS_chmod:
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case SYS_chown:
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case SYS_unmount:
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case SYS_access:
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case SYS_chflags:
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case SYS_acct:
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case SYS_revoke:
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case SYS_symlink:
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case SYS_readlink:
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case SYS_execve:
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case SYS_chroot:
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case SYS_rename:
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case SYS_mkfifo:
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case SYS_mkdir:
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case SYS_rmdir:
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case SYS_utimes:
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case SYS_quotactl:
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case SYS_statfs:
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case SYS_getfh:
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case SYS_pathconf:
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case SYS_truncate:
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case SYS_undelete:
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case SYS___posix_rename:
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case SYS_lchmod:
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case SYS_lchown:
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case SYS_lutimes:
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case SYS___stat13:
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case SYS___lstat13:
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case SYS___posix_chown:
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case SYS___posix_lchown:
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case SYS_lchflags:
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if (BLEFT > 1)
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*bp++ = '(';
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eol = 0;
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break;
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case SYS_compat_16___sigaction14 :
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(void)snprintf(bp, BLEFT, "(%s",
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signals[(int)*ap].name);
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s = ", ";
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argsize -= sizeof(register_t);
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ap++;
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break;
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case SYS_ioctl :
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if (decimal)
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(void)snprintf(bp, BLEFT, "(%ld",
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(long)*ap);
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else
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(void)snprintf(bp, BLEFT, "(%#lx",
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(long)*ap);
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bp += strlen(bp);
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ap++;
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argsize -= sizeof(register_t);
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if ((s = ioctlname(*ap)) != NULL)
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(void)snprintf(bp, BLEFT, ", %s", s);
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else
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ioctldecode(*ap);
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s = ", ";
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ap++;
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argsize -= sizeof(register_t);
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break;
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case 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)snprintf(bp, BLEFT, "(%s",
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ptrace_ops[*ap]);
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else
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(void)snprintf(bp, BLEFT, "(%ld",
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(long)*ap);
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s = ", ";
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ap++;
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argsize -= sizeof(register_t);
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break;
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default :
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break;
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}
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bp += strlen(bp);
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}
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if (eol) {
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while (argsize) {
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if (!nohdr || strcmp(s, "(")) {
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if (decimal)
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(void)snprintf(bp, BLEFT,
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"%s%ld", s,
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(long)*ap);
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else
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(void)snprintf(bp, BLEFT,
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"%s%#lx", s,
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(long)*ap);
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bp += strlen(bp);
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}
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s = ", ";
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ap++;
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argsize -= sizeof(register_t);
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}
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if (BLEFT > 1)
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*bp++ = ')';
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}
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}
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*bp = '\0';
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*lenp = bp - buff;
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return eol;
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}
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void
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ktrsysret(ktr, buff, buffsz, lenp)
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struct ktr_sysret *ktr;
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int buffsz, *lenp;
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char *buff;
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{
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register register_t ret = ktr->ktr_retval;
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register int error = ktr->ktr_error;
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while (*lenp < 50)
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buff[(*lenp)++] = ' ';
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if (error == EJUSTRETURN)
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strcpy(buff + *lenp, " JUSTRETURN");
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else if (error == ERESTART)
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strcpy(buff + *lenp, " RESTART");
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else if (error) {
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sprintf(buff + *lenp, " Err#%d", error);
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if (error < MAXERRNOS && error >= -2)
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sprintf(buff + strlen(buff), " %s",errnos[error].name);
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} else
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sprintf(buff + *lenp, " = %ld", (long)ret);
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strcat(buff + *lenp, "\n");
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*lenp = 0;
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fputs(buff, stdout);
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*buff = '\0';
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}
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void
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ktrnamei(cp, len, buff, buffsz, lenp)
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int buffsz, *lenp;
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char *cp, *buff;
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{
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snprintf(buff + *lenp, buffsz - *lenp, "\"%.*s\"", len, cp);
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*lenp += strlen(buff + *lenp);
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}
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void
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ktremul(ktr_header, cp, len, buff, buffsz, lenp)
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struct ktr_header *ktr_header;
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int buffsz, *lenp;
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char *cp, *buff;
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{
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bzero(buff + *lenp, buffsz - *lenp);
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cp[len] = '\0';
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snprintf(buff + *lenp, buffsz - *lenp, "emul(%s)\n", cp);
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*lenp += strlen(buff + *lenp);
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setemul(cp, ktr_header->ktr_pid, 1);
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}
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void
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ktrgenio(ktr, len, buff, bufsz, lenp)
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struct ktr_genio *ktr;
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int len;
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char *buff;
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int bufsz, *lenp;
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{
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static int screenwidth = 0;
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register int datalen = len - sizeof (struct ktr_genio);
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register char *dp = (char *)ktr + sizeof (struct ktr_genio);
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register int col = 0;
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register int width;
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char visbuf[5], *bp = buff;
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if (*lenp < bufsz) {
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bp += *lenp;
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bzero(buff, BLEFT);
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} else
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*lenp = 0;
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if (screenwidth == 0) {
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struct winsize ws;
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if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
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ws.ws_col > 8)
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screenwidth = ws.ws_col;
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else
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screenwidth = 80;
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}
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if (maxdata && datalen > maxdata)
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datalen = maxdata;
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strcpy(bp, " \"");
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col = *lenp;
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col += 8;
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bp += 8;
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for (; datalen > 0; datalen--, dp++) {
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(void) vis(visbuf, *dp, VIS_NL|VIS_TAB|VIS_CSTYLE, *(dp+1));
|
|
width = strlen(visbuf);
|
|
visbuf[4] = '\0';
|
|
if (col + width + 2 >= screenwidth)
|
|
break;
|
|
col += width;
|
|
strncpy(bp, visbuf, width);
|
|
bp += width;
|
|
if (col + 2 >= screenwidth)
|
|
break;
|
|
}
|
|
strcpy(bp, "\"\n");
|
|
*lenp = col + 2;
|
|
}
|
|
|
|
void
|
|
ktrpsig(psig)
|
|
struct ktr_psig *psig;
|
|
{
|
|
(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=0x%lx code=0x%x\n",
|
|
(u_long)psig->action, (unsigned long)psig->mask.__bits[0],
|
|
psig->code);
|
|
}
|
|
}
|
|
|
|
void
|
|
ktrcsw(cs)
|
|
struct ktr_csw *cs;
|
|
{
|
|
(void)printf("%s %s\n", cs->out ? "stop" : "resume",
|
|
cs->user ? "user" : "kernel");
|
|
}
|