1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <strings.h>
28
29 #include <inj_event.h>
30 #include <inj_err.h>
31
32 #include <fm/fmd_log.h>
33
34 typedef struct inj_logfile {
35 uint64_t ilf_sec; /* timestamp seconds from previous record */
36 uint64_t ilf_nsec; /* timestamp nanoseconds from previous record */
37 int ilf_index; /* record index in log file for fake lineno */
38 } inj_logfile_t;
39
40 /*ARGSUSED*/
41 static int
inj_logfile_event(fmd_log_t * lp,const fmd_log_record_t * rp,void * data)42 inj_logfile_event(fmd_log_t *lp, const fmd_log_record_t *rp, void *data)
43 {
44 inj_cmd_t *cmd = inj_zalloc(sizeof (inj_cmd_t));
45 inj_defn_t *ev = inj_zalloc(sizeof (inj_defn_t));
46
47 hrtime_t rec_sec = rp->rec_sec + rp->rec_nsec / NANOSEC;
48 hrtime_t rec_nsec = rp->rec_nsec % NANOSEC;
49
50 inj_logfile_t *ilf = data;
51 hrtime_t delta;
52
53 if (ilf->ilf_index == 1)
54 goto add_event; /* do not try to adjust time for first record */
55
56 /*
57 * If the current record's time is before that of the previous record,
58 * advance it to the previous record time. This may occur when delays
59 * between capturing ENA and enqueuing a sysevent are observed.
60 */
61 if (rec_sec < ilf->ilf_sec ||
62 (rec_sec == ilf->ilf_sec && rec_nsec < ilf->ilf_nsec)) {
63 warn("record [%d] (%s) timestamp is out of order: "
64 "advancing event time to %llx.%llx\n",
65 ilf->ilf_index, rp->rec_class, ilf->ilf_sec, ilf->ilf_nsec);
66 rec_sec = ilf->ilf_sec;
67 rec_nsec = ilf->ilf_nsec;
68 }
69
70 /*
71 * For now, compute the delta between the previous record and this one
72 * as a number of nanoseconds and advance the clock. If a massively
73 * large delay is observed (>INT64_MAX ns), we abort. This could be
74 * improved if necessary by sending more than one cmd_addhrt in a loop.
75 */
76 delta = (rec_sec - ilf->ilf_sec) * NANOSEC;
77 delta += (hrtime_t)rec_nsec - (hrtime_t)ilf->ilf_nsec;
78
79 if (delta < 0)
80 die("record [%d] timestamp delta too large\n", ilf->ilf_index);
81
82 if (delta > 0)
83 inj_cmds_add(inj_cmd_addhrt(delta));
84
85 add_event:
86 ev->defn_name = inj_strdup(rp->rec_class);
87 ev->defn_lineno = ilf->ilf_index++;
88
89 if ((errno = nvlist_dup(rp->rec_nvl, &ev->defn_nvl, 0)) != 0)
90 die("failed to allocate nvl for %s event", rp->rec_class);
91
92 cmd->cmd_type = CMD_SEND_EVENT;
93 cmd->cmd_event = ev;
94
95 inj_cmds_add(cmd);
96
97 ilf->ilf_sec = rec_sec;
98 ilf->ilf_nsec = rec_nsec;
99
100 return (0);
101 }
102
103 inj_list_t *
inj_logfile_read(fmd_log_t * lp)104 inj_logfile_read(fmd_log_t *lp)
105 {
106 const char *label = fmd_log_label(lp);
107 inj_logfile_t ilf;
108
109 if (strcmp(label, "error") != 0)
110 die("cannot use '%s' log as injector input\n", label);
111
112 bzero(&ilf, sizeof (ilf));
113 ilf.ilf_index = 1;
114
115 if (fmd_log_iter(lp, inj_logfile_event, &ilf) != 0) {
116 die("failed to process log: %s\n",
117 fmd_log_errmsg(lp, fmd_log_errno(lp)));
118 }
119
120 return (inj_cmds_get());
121 }
122