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 /*
23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <scsi/libses.h>
28 #include "ses_impl.h"
29
30 int
enc_parse_td(ses2_td_hdr_impl_t * tip,const char * tp,nvlist_t * nvl)31 enc_parse_td(ses2_td_hdr_impl_t *tip, const char *tp, nvlist_t *nvl)
32 {
33 int nverr;
34
35 if (tp != NULL)
36 SES_NV_ADD(fixed_string, nverr, nvl, SES_PROP_CLASS_DESCRIPTION,
37 tp, tip->sthi_text_len);
38
39 return (0);
40 }
41
42 static int
enc_eid(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)43 enc_eid(const ses2_ed_impl_t *tp, nvlist_t *nvl, const char *name)
44 {
45 int nverr;
46
47 SES_NV_ADD(uint64, nverr, nvl, name, tp->st_hdr.sehi_subenclosure_id);
48
49 return (0);
50 }
51
52 static int
enc_espid(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)53 enc_espid(const ses2_ed_impl_t *tp, nvlist_t *nvl, const char *name)
54 {
55 int nverr;
56
57 SES_NV_ADD(uint64, nverr, nvl, name, tp->st_hdr.sehi_rel_esp_id);
58
59 return (0);
60 }
61
62 static int
enc_nesp(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)63 enc_nesp(const ses2_ed_impl_t *tp, nvlist_t *nvl, const char *name)
64 {
65 int nverr;
66
67 SES_NV_ADD(uint64, nverr, nvl, name, tp->st_hdr.sehi_n_esps);
68
69 return (0);
70 }
71
72 static int
enc_lid(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)73 enc_lid(const ses2_ed_impl_t *tp, nvlist_t *nvl, const char *name)
74 {
75 nvlist_t *lid;
76 int nverr;
77
78 if ((nverr = nvlist_alloc(&lid, NV_UNIQUE_NAME, 0)) != 0)
79 return (ses_set_nverrno(nverr, NULL));
80
81 SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_INT,
82 SCSI_READ64(&tp->st_logical_id));
83
84 switch (tp->st_logical_id.sni8i_naa) {
85 case NAA_IEEE_EXT:
86 SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_ID_TYPE,
87 NAA_IEEE_EXT);
88 SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_COMPANY_ID,
89 NAA_IEEE_EXT_COMPANY_ID(&tp->st_logical_id.sni8i_ext_id));
90 SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_VS_A,
91 NAA_IEEE_EXT_VENDOR_A(&tp->st_logical_id.sni8i_ext_id));
92 SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_VS_B,
93 NAA_IEEE_EXT_VENDOR_B(&tp->st_logical_id.sni8i_ext_id));
94 break;
95 case NAA_IEEE_REG:
96 SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_ID_TYPE,
97 NAA_IEEE_REG);
98 SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_COMPANY_ID,
99 NAA_IEEE_REG_COMPANY_ID(&tp->st_logical_id.sni8i_reg_id));
100 SES_NV_ADD_OR_FREE(uint64, nverr, lid, SPC3_NAA_VS_A,
101 NAA_IEEE_REG_VENDOR_ID(&tp->st_logical_id.sni8i_reg_id));
102 break;
103 default:
104 break;
105 }
106
107 if ((nverr = nvlist_add_nvlist(nvl, name, lid)) != 0) {
108 nvlist_free(lid);
109 return (ses_set_nverrno(nverr, name));
110 }
111
112 nvlist_free(lid);
113
114 return (0);
115 }
116
117 static int
enc_vid(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)118 enc_vid(const ses2_ed_impl_t *tp, nvlist_t *nvl,
119 const char *name)
120 {
121 int nverr;
122
123 SES_NV_ADD_FS_TRUNC(nverr, nvl, name, tp->st_vendor_id);
124
125 return (0);
126 }
127
128 static int
enc_pid(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)129 enc_pid(const ses2_ed_impl_t *tp, nvlist_t *nvl,
130 const char *name)
131 {
132 int nverr;
133
134 SES_NV_ADD_FS_TRUNC(nverr, nvl, name, tp->st_product_id);
135
136 return (0);
137 }
138
139 static int
enc_rev(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)140 enc_rev(const ses2_ed_impl_t *tp, nvlist_t *nvl,
141 const char *name)
142 {
143 int nverr;
144
145 SES_NV_ADD_FS_TRUNC(nverr, nvl, name, tp->st_product_revision);
146
147 return (0);
148 }
149
150 static int
enc_vs(const ses2_ed_impl_t * tp,nvlist_t * nvl,const char * name)151 enc_vs(const ses2_ed_impl_t *tp, nvlist_t *nvl, const char *name)
152 {
153 int nverr;
154
155 SES_NV_ADD(byte_array, nverr, nvl, name, (uchar_t *)tp->st_priv,
156 tp->st_hdr.sehi_ed_len - offsetof(ses2_ed_impl_t, st_priv[0]) +
157 offsetof(ses2_ed_impl_t, st_hdr.sehi_ed_len) + 1);
158
159 return (0);
160 }
161
162 /* LINTED - unused */
163 static const ses2_ed_impl_t __ed = { 0 };
164
165 #define ED_REQ_LEN(member) \
166 (offsetof(ses2_ed_impl_t, member) - sizeof (ses2_ed_hdr_impl_t) + \
167 sizeof (__ed.member))
168
169 static const struct config_member {
170 const char *name;
171 size_t minsz;
172 int (*func)(const ses2_ed_impl_t *, nvlist_t *, const char *);
173 } config_members[] = {
174 { SES_EN_PROP_EID, 0, enc_eid },
175 { SES_EN_PROP_ESPID, 0, enc_espid },
176 { SES_EN_PROP_NESP, 0, enc_nesp },
177 { SES_EN_PROP_LID, ED_REQ_LEN(st_logical_id), enc_lid },
178 { SES_EN_PROP_VID, ED_REQ_LEN(st_vendor_id), enc_vid },
179 { SES_EN_PROP_PID, ED_REQ_LEN(st_product_id), enc_pid },
180 { SES_EN_PROP_REV, ED_REQ_LEN(st_product_revision), enc_rev },
181 { SES_EN_PROP_VS, ED_REQ_LEN(st_priv), enc_vs },
182 { NULL, 0, NULL }
183 };
184
185 int
enc_parse_ed(ses2_ed_impl_t * tp,nvlist_t * nvl)186 enc_parse_ed(ses2_ed_impl_t *tp, nvlist_t *nvl)
187 {
188 const struct config_member *mp;
189 int err;
190
191 if (tp == NULL)
192 return (0);
193
194 for (mp = &config_members[0]; mp->name != NULL; mp++) {
195 if (mp->func != NULL && tp->st_hdr.sehi_ed_len >= mp->minsz) {
196 err = mp->func(tp, nvl, mp->name);
197 if (err != 0)
198 return (err);
199 }
200 }
201
202 return (0);
203 }
204
205 ses_target_t *
ses_open_scsi(uint_t version,libscsi_target_t * stp)206 ses_open_scsi(uint_t version, libscsi_target_t *stp)
207 {
208 ses_target_t *tp;
209 ses_snap_t *sp;
210
211 if (version != LIBSES_VERSION) {
212 (void) ses_set_errno(ESES_VERSION);
213 return (NULL);
214 }
215
216 if ((tp = ses_zalloc(sizeof (ses_target_t))) == NULL)
217 return (NULL);
218
219 tp->st_target = stp;
220 tp->st_scsi_hdl = libscsi_get_handle(stp);
221 tp->st_truncate = (getenv("LIBSES_TRUNCATE") != NULL);
222 if (tp->st_truncate)
223 srand48(gethrtime());
224
225 (void) pthread_mutex_init(&tp->st_lock, NULL);
226
227 if (ses_plugin_load(tp) != 0) {
228 ses_close(tp);
229 return (NULL);
230 }
231
232 if ((sp = ses_snap_new(tp)) == NULL) {
233 ses_close(tp);
234 return (NULL);
235 }
236
237 ses_snap_rele(sp);
238
239 return (tp);
240 }
241
242 ses_target_t *
ses_open(uint_t version,const char * target)243 ses_open(uint_t version, const char *target)
244 {
245 ses_target_t *tp;
246 libscsi_errno_t serr;
247 libscsi_target_t *stp;
248 libscsi_hdl_t *hp;
249
250 if ((hp = libscsi_init(LIBSCSI_VERSION, &serr)) == NULL) {
251 (void) ses_error(ESES_LIBSCSI, "failed to initialize "
252 "libscsi: %s", libscsi_strerror(serr));
253 return (NULL);
254 }
255
256 if ((stp = libscsi_open(hp, NULL, target)) == NULL) {
257 (void) ses_libscsi_error(hp, "failed to open SES target");
258 libscsi_fini(hp);
259 return (NULL);
260 }
261
262 if ((tp = ses_open_scsi(version, stp)) == NULL) {
263 libscsi_close(hp, stp);
264 libscsi_fini(hp);
265 return (NULL);
266 }
267
268 tp->st_closescsi = B_TRUE;
269
270 return (tp);
271 }
272
273 libscsi_target_t *
ses_scsi_target(ses_target_t * tp)274 ses_scsi_target(ses_target_t *tp)
275 {
276 return (tp->st_target);
277 }
278
279 void
ses_close(ses_target_t * tp)280 ses_close(ses_target_t *tp)
281 {
282 if (tp->st_snapshots != NULL)
283 ses_snap_rele(tp->st_snapshots);
284 if (tp->st_snapshots != NULL)
285 ses_panic("attempt to close SES target with active snapshots");
286 ses_plugin_unload(tp);
287 if (tp->st_closescsi) {
288 libscsi_close(tp->st_scsi_hdl, tp->st_target);
289 libscsi_fini(tp->st_scsi_hdl);
290 }
291 ses_free(tp);
292 }
293