xref: /illumos-gate/usr/src/cmd/fm/fmdump/common/nvlrender.c (revision a6bde1a23b60f140c7ed78df979c2e22b1ed9b2c)
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 (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
23  * Copyright (c) 2013, Joyent, Inc. All rights reserved.
24  */
25 
26 /*
27  * Rendering functions for nvlist_prt that are of use to all types
28  * of log.
29  */
30 
31 #include <fmdump.h>
32 #include <stdio.h>
33 #include <strings.h>
34 
35 extern topo_hdl_t *fmd_fmri_topo_hold(int);
36 
37 /*
38  * Can be appointed to be called for dumping all nvlist members of
39  * an nvlist we ask to print with nvlist_prt.  Return 0 if the
40  * nvlist is not recognized as an fmri, and default formatting
41  * will be applied; otherwise format as an fmri string and return 1.
42  */
43 
44 /*ARGSUSED*/
45 int
46 fmdump_render_nvlist(nvlist_prtctl_t pctl, void *private, nvlist_t *nvl,
47     const char *name, nvlist_t *fmri)
48 {
49 	topo_hdl_t *thp = fmd_fmri_topo_hold(TOPO_VERSION);
50 	FILE *fp = nvlist_prtctl_getdest(pctl);
51 	char *class, *fmristr = NULL;
52 	uint8_t version;
53 	int err;
54 
55 	if (nvlist_lookup_string(fmri, FM_FMRI_SCHEME, &class) != 0 ||
56 	    nvlist_lookup_uint8(fmri, FM_VERSION, &version) != 0)
57 		return (0);
58 
59 	/*
60 	 * Instead of hardcoding known FMRI classes here we'll try
61 	 * topo_fmri_nvl2str which should fail gracefully for invalid
62 	 * schemes (ie an nvlist that just happens to have the expected
63 	 * class and version members but that isn't an FMRI).
64 	 */
65 	if (topo_fmri_nvl2str(thp, fmri, &fmristr, &err) != 0 ||
66 	    fmristr == NULL)
67 		return (0);
68 
69 	nvlist_prtctl_doindent(pctl, 1);
70 	nvlist_prtctl_dofmt(pctl, NVLIST_FMT_MEMBER_NAME, name);
71 	(void) fprintf(fp, "%s", fmristr);
72 	topo_hdl_strfree(thp, fmristr);
73 
74 	return (1);
75 }
76 
77 /*
78  * Thin wrapper around libnvpair's inbuilt JSON routine.  Simply dumps the
79  * entire log record nvlist without any reformatting.
80  */
81 
82 /*ARGSUSED*/
83 int
84 fmdump_print_json(fmd_log_t *lp, const fmd_log_record_t *rp, FILE *fp)
85 {
86 	if (nvlist_print_json(fp, rp->rec_nvl) != 0 || fprintf(fp, "\n") < 0 ||
87 	    fflush(fp) != 0)
88 		return (-1);
89 
90 	return (0);
91 }
92