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 2007 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #pragma ident	"%Z%%M%	%I%	%E% SMI"
27 
28 #include <libipmi.h>
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <string.h>
32 #include <stdarg.h>
33 
34 #include "ipmi_impl.h"
35 
36 /*
37  * Error handling
38  */
39 int
40 ipmi_set_error(ipmi_handle_t *ihp, int error, const char *fmt, ...)
41 {
42 	va_list ap;
43 
44 	va_start(ap, fmt);
45 
46 	ihp->ih_errno = error;
47 	if (fmt == NULL)
48 		ihp->ih_errmsg[0] = '\0';
49 	else
50 		(void) vsnprintf(ihp->ih_errmsg, sizeof (ihp->ih_errmsg),
51 		    fmt, ap);
52 	va_end(ap);
53 
54 	return (-1);
55 }
56 
57 int
58 ipmi_errno(ipmi_handle_t *ihp)
59 {
60 	return (ihp->ih_errno);
61 }
62 
63 static struct {
64 	int		err;
65 	const char	*msg;
66 } errno_table[] = {
67 	{ EIPMI_NOMEM,			"memory allocation failure" },
68 	{ EIPMI_BMC_OPEN_FAILED,	"failed to open /dev/bmc" },
69 	{ EIPMI_BMC_PUTMSG,		"failed to send message to /dev/bmc" },
70 	{ EIPMI_BMC_GETMSG,
71 	    "failed to read response from /dev/bmc" },
72 	{ EIPMI_BMC_RESPONSE,
73 	    "failed to read response from /dev/bmc" },
74 	{ EIPMI_INVALID_COMMAND,	"invalid command" },
75 	{ EIPMI_COMMAND_TIMEOUT,	"command timed out" },
76 	{ EIPMI_DATA_LENGTH_EXCEEDED,	"maximum data length exceeded" },
77 	{ EIPMI_SEND_FAILED,		"failed to send BMC request" },
78 	{ EIPMI_UNSPECIFIED,		"unspecified BMC error" },
79 	{ EIPMI_BAD_RESPONSE_LENGTH,
80 	    "unexpected command response data length" },
81 	{ EIPMI_INVALID_RESERVATION,	"invalid or cancelled reservation" },
82 	{ EIPMI_NOT_PRESENT,		"request entity not present" },
83 	{ EIPMI_INVALID_REQUEST,	"malformed request data" },
84 	{ EIPMI_BUSY,			"service processor is busy" },
85 	{ EIPMI_NOSPACE,		"service processor is out of space" },
86 	{ EIPMI_UNAVAILABLE,		"service processor is unavailable" },
87 	{ EIPMI_ACCESS,			"insufficient privileges" }
88 };
89 
90 /* ARGSUSED */
91 const char *
92 ipmi_errmsg(ipmi_handle_t *ihp)
93 {
94 	int i;
95 	const char *str;
96 
97 	str = NULL;
98 	for (i = 0; i < sizeof (errno_table) / sizeof (errno_table[0]); i++) {
99 		if (errno_table[i].err == ihp->ih_errno) {
100 			str = errno_table[i].msg;
101 			break;
102 		}
103 	}
104 
105 	if (str == NULL && (str = strerror(ihp->ih_errno)) == NULL)
106 		str = "unknown failure";
107 
108 	if (ihp->ih_errmsg[0] == '\0')
109 		return (str);
110 
111 	(void) snprintf(ihp->ih_errbuf, sizeof (ihp->ih_errbuf),
112 	    "%s: %s", str, ihp->ih_errmsg);
113 	return (ihp->ih_errbuf);
114 }
115 
116 /*
117  * Memory allocation
118  */
119 
120 void *
121 ipmi_alloc(ipmi_handle_t *ihp, size_t size)
122 {
123 	void *ptr;
124 
125 	if ((ptr = malloc(size)) == NULL)
126 		(void) ipmi_set_error(ihp, EIPMI_NOMEM, NULL);
127 
128 	return (ptr);
129 }
130 
131 void *
132 ipmi_zalloc(ipmi_handle_t *ihp, size_t size)
133 {
134 	void *ptr;
135 
136 	if ((ptr = calloc(size, 1)) == NULL)
137 		(void) ipmi_set_error(ihp, EIPMI_NOMEM, NULL);
138 
139 	return (ptr);
140 }
141 
142 /* ARGSUSED */
143 void
144 ipmi_free(ipmi_handle_t *ihp, void *ptr)
145 {
146 	free(ptr);
147 }
148