[src/trunk]: src/usr.bin/kdump It's easy for ktrace can generate trace files ...

[atatat <atatat%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/51255f11842d
branches:  trunk
changeset: 533086:51255f11842d
user:      atatat <atatat%NetBSD.org@localhost>
date:      Thu Jun 20 22:02:32 2002 +0000

description:
It's easy for ktrace can generate trace files that contain data from
multiple processes, so let's add a "-p pid" option to kdump so that it
can pull out the data for one process easily.

diffstat:

 usr.bin/kdump/kdump.1 |   5 ++++-
 usr.bin/kdump/kdump.c |  15 +++++++++++----
 2 files changed, 15 insertions(+), 5 deletions(-)

diffs (90 lines):

diff -r 59fd8d1d13c9 -r 51255f11842d usr.bin/kdump/kdump.1
--- a/usr.bin/kdump/kdump.1     Thu Jun 20 21:03:19 2002 +0000
+++ b/usr.bin/kdump/kdump.1     Thu Jun 20 22:02:32 2002 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: kdump.1,v 1.10 2001/12/01 16:43:16 wiz Exp $
+.\"    $NetBSD: kdump.1,v 1.11 2002/06/20 22:02:32 atatat Exp $
 .\"
 .\" Copyright (c) 1990, 1993
 .\"    The Regents of the University of California.  All rights reserved.
@@ -45,6 +45,7 @@
 .Op Fl e Ar emulation
 .Op Fl f Ar file
 .Op Fl m Ar maxdata
+.Op Fl p Ar pid
 .Op Fl t Ar trstr
 .Sh DESCRIPTION
 .Nm
@@ -74,6 +75,8 @@
 .Ar maxdata
 bytes when decoding
 .Tn I/O .
+.It Fl p Ar pid
+Only display records from the trace file that are for the indicated pid.
 .It Fl n
 Suppress ad hoc translations.
 Normally
diff -r 59fd8d1d13c9 -r 51255f11842d usr.bin/kdump/kdump.c
--- a/usr.bin/kdump/kdump.c     Thu Jun 20 21:03:19 2002 +0000
+++ b/usr.bin/kdump/kdump.c     Thu Jun 20 22:02:32 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kdump.c,v 1.38 2002/04/08 20:15:59 christos Exp $      */
+/*     $NetBSD: kdump.c,v 1.39 2002/06/20 22:02:32 atatat Exp $        */
 
 /*-
  * Copyright (c) 1988, 1993
@@ -43,7 +43,7 @@
 #if 0
 static char sccsid[] = "@(#)kdump.c    8.4 (Berkeley) 4/28/95";
 #else
-__RCSID("$NetBSD: kdump.c,v 1.38 2002/04/08 20:15:59 christos Exp $");
+__RCSID("$NetBSD: kdump.c,v 1.39 2002/06/20 22:02:32 atatat Exp $");
 #endif
 #endif /* not lint */
 
@@ -71,6 +71,7 @@
 #include <sys/syscall.h>
 
 int timestamp, decimal, plain, tail, maxdata;
+pid_t do_pid = -1;
 const char *tracefile = DEF_TRACEFILE;
 struct ktr_header ktr_header;
 int emul_changed = 0;
@@ -121,7 +122,7 @@
        int trpoints = ALL_POINTS;
        const char *emul_name = "netbsd";
 
-       while ((ch = getopt(argc, argv, "e:f:dlm:nRTt:")) != -1)
+       while ((ch = getopt(argc, argv, "e:f:dlm:np:RTt:")) != -1)
                switch (ch) {
                case 'e':
                        emul_name = strdup(optarg); /* it's safer to copy it */
@@ -135,6 +136,9 @@
                case 'l':
                        tail = 1;
                        break;
+               case 'p':
+                       do_pid = atoi(optarg);
+                       break;
                case 'm':
                        maxdata = atoi(optarg);
                        break;
@@ -170,7 +174,8 @@
                err(1, "%s", tracefile);
        while (fread_tail((char *)&ktr_header, sizeof(struct ktr_header), 1)) {
                if (trpoints & (1<<ktr_header.ktr_type))
-                       dumpheader(&ktr_header);
+                       if (do_pid == -1 || ktr_header.ktr_pid == do_pid)
+                               dumpheader(&ktr_header);
                if ((ktrlen = ktr_header.ktr_len) < 0)
                        errx(1, "bogus length 0x%x", ktrlen);
                if (ktrlen > size) {
@@ -185,6 +190,8 @@
                        continue;
 
                /* update context to match currently processed record */
+               if (do_pid != -1 && ktr_header.ktr_pid != do_pid)
+                       continue;
                ectx_sanify(ktr_header.ktr_pid);
 
                switch (ktr_header.ktr_type) {