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 (c) 2010, Oracle and/or its affiliates. All rights reserved.
24 */
25
26 #include <libnvpair.h>
27 #include <fm/topo_mod.h>
28
29 #include <sys/fm/protocol.h>
30 #include <sys/types.h>
31
32 #include <topo_method.h>
33 #include <topo_subr.h>
34 #include <sw.h>
35
36 static int sw_fmri_nvl2str(topo_mod_t *, tnode_t *, topo_version_t,
37 nvlist_t *, nvlist_t **);
38 static int sw_fmri_create(topo_mod_t *, tnode_t *, topo_version_t,
39 nvlist_t *, nvlist_t **);
40
41 static const topo_method_t sw_methods[] = {
42 { TOPO_METH_NVL2STR, TOPO_METH_NVL2STR_DESC, TOPO_METH_NVL2STR_VERSION,
43 TOPO_STABILITY_INTERNAL, sw_fmri_nvl2str },
44 { TOPO_METH_FMRI, TOPO_METH_FMRI_DESC, TOPO_METH_FMRI_VERSION,
45 TOPO_STABILITY_INTERNAL, sw_fmri_create },
46 { NULL }
47 };
48
49 static int sw_enum(topo_mod_t *, tnode_t *, const char *, topo_instance_t,
50 topo_instance_t, void *, void *);
51 static void sw_release(topo_mod_t *, tnode_t *);
52
53 static const topo_modops_t sw_ops =
54 { sw_enum, sw_release };
55
56 static const topo_modinfo_t sw_info =
57 { "sw", FM_FMRI_SCHEME_SW, SW_VERSION, &sw_ops };
58
59 int
sw_init(topo_mod_t * mod,topo_version_t version)60 sw_init(topo_mod_t *mod, topo_version_t version)
61 {
62 if (getenv("TOPOSWDEBUG"))
63 topo_mod_setdebug(mod);
64 topo_mod_dprintf(mod, "initializing sw builtin\n");
65
66 if (version != SW_VERSION)
67 return (topo_mod_seterrno(mod, EMOD_VER_NEW));
68
69 if (topo_mod_register(mod, &sw_info, TOPO_VERSION) != 0) {
70 topo_mod_dprintf(mod, "failed to register sw_info: "
71 "%s\n", topo_mod_errmsg(mod));
72 return (-1);
73 }
74
75 return (0);
76 }
77
78 void
sw_fini(topo_mod_t * mod)79 sw_fini(topo_mod_t *mod)
80 {
81 topo_mod_unregister(mod);
82 }
83
84 static int
sw_get_optl_string(nvlist_t * nvl,char * name,char ** dest)85 sw_get_optl_string(nvlist_t *nvl, char *name, char **dest)
86 {
87 if (nvlist_lookup_string(nvl, name, dest) == 0) {
88 return (0);
89 } else {
90 *dest = NULL;
91 return (errno == ENOENT ? 0 : 1);
92 }
93 }
94
95 static int
sw_get_optl_int64(nvlist_t * nvl,char * name,int64_t * dest)96 sw_get_optl_int64(nvlist_t *nvl, char *name, int64_t *dest)
97 {
98 if (nvlist_lookup_int64(nvl, name, dest) == 0) {
99 return (0);
100 } else {
101 *dest = -1;
102 return (errno == ENOENT ? 0 : 1);
103 }
104 }
105
106 static int
sw_get_optl_nvlist(nvlist_t * nvl,char * name,nvlist_t ** dest)107 sw_get_optl_nvlist(nvlist_t *nvl, char *name, nvlist_t **dest)
108 {
109 if (nvlist_lookup_nvlist(nvl, name, dest) == 0) {
110 return (0);
111 } else {
112 *dest = NULL;
113 return (errno == ENOENT ? 0 : 1);
114 }
115 }
116
117 static int
sw_add_optl_string(nvlist_t * nvl,char * name,char * val)118 sw_add_optl_string(nvlist_t *nvl, char *name, char *val)
119 {
120 if (val)
121 return (nvlist_add_string(nvl, name, val) != 0);
122 else
123 return (0);
124 }
125
126 /*ARGSUSED*/
127 static int
sw_fmri_create(topo_mod_t * mod,tnode_t * node,topo_version_t version,nvlist_t * in,nvlist_t ** out)128 sw_fmri_create(topo_mod_t *mod, tnode_t *node, topo_version_t version,
129 nvlist_t *in, nvlist_t **out)
130 {
131 nvlist_t *args, *fmri = NULL, *obj = NULL, *site = NULL, *ctxt = NULL;
132 topo_mod_errno_t moderr;
133 int err = 0;
134
135 char *obj_path, *obj_root;
136 nvlist_t *obj_pkg;
137
138 char *site_token, *site_module, *site_file, *site_func;
139 int64_t site_line;
140
141 char *ctxt_origin, *ctxt_execname, *ctxt_zone;
142 int64_t ctxt_pid, ctxt_ctid;
143 char **ctxt_stack;
144 uint_t ctxt_stackdepth;
145
146
147 if (version > TOPO_METH_FMRI_VERSION)
148 return (topo_mod_seterrno(mod, EMOD_VER_NEW));
149
150 if (nvlist_lookup_nvlist(in, TOPO_METH_FMRI_ARG_NVL, &args) != 0)
151 return (topo_mod_seterrno(mod, EMOD_METHOD_INVAL));
152
153 if (nvlist_lookup_string(args, "obj_path", &obj_path) != 0)
154 return (topo_mod_seterrno(mod, EMOD_NVL_INVAL));
155 err |= sw_get_optl_string(args, "obj_root", &obj_root);
156 err |= sw_get_optl_nvlist(args, "obj-pkg", &obj_pkg);
157
158 err |= sw_get_optl_string(args, "site_token", &site_token);
159 err |= sw_get_optl_string(args, "site_module", &site_module);
160 err |= sw_get_optl_string(args, "site_file", &site_file);
161 err |= sw_get_optl_string(args, "site_func", &site_func);
162 err |= sw_get_optl_int64(args, "site_line", &site_line);
163
164 err |= sw_get_optl_string(args, "ctxt_origin", &ctxt_origin);
165 err |= sw_get_optl_string(args, "ctxt_execname", &ctxt_execname);
166 err |= sw_get_optl_string(args, "ctxt_zone", &ctxt_zone);
167 err |= sw_get_optl_int64(args, "ctxt_pid", &ctxt_pid);
168 err |= sw_get_optl_int64(args, "ctxt_ctid", &ctxt_ctid);
169
170 if (nvlist_lookup_string_array(args, "stack", &ctxt_stack,
171 &ctxt_stackdepth) != 0) {
172 if (errno == ENOENT)
173 ctxt_stack = NULL;
174 else
175 err++;
176 }
177
178 if (err)
179 (void) topo_mod_seterrno(mod, EMOD_FMRI_NVL);
180
181 if (topo_mod_nvalloc(mod, &fmri, NV_UNIQUE_NAME) != 0 ||
182 topo_mod_nvalloc(mod, &obj, NV_UNIQUE_NAME) != 0) {
183 moderr = EMOD_NOMEM;
184 goto out;
185 }
186
187 /*
188 * Add standard FMRI members 'version' and 'scheme'.
189 */
190 err |= nvlist_add_uint8(fmri, FM_VERSION, FM_SW_SCHEME_VERSION);
191 err |= nvlist_add_string(fmri, FM_FMRI_SCHEME, FM_FMRI_SCHEME_SW);
192
193 /*
194 * Build up the 'object' nvlist.
195 */
196 err |= nvlist_add_string(obj, FM_FMRI_SW_OBJ_PATH, obj_path);
197 err |= sw_add_optl_string(obj, FM_FMRI_SW_OBJ_ROOT, obj_root);
198 if (obj_pkg)
199 err |= nvlist_add_nvlist(obj, FM_FMRI_SW_OBJ_PKG, obj_pkg);
200
201 /*
202 * Add 'object' to the fmri.
203 */
204 if (err == 0)
205 err |= nvlist_add_nvlist(fmri, FM_FMRI_SW_OBJ, obj);
206
207 if (err) {
208 moderr = EMOD_NOMEM;
209 goto out;
210 }
211
212 /*
213 * Do we have anything for a 'site' nvlist?
214 */
215 if (site_token == NULL && site_module == NULL && site_file == NULL &&
216 site_func == NULL && site_line == -1)
217 goto context;
218
219 /*
220 * Allocate and build 'site' nvlist.
221 */
222 if (topo_mod_nvalloc(mod, &site, NV_UNIQUE_NAME) != 0) {
223 moderr = EMOD_NOMEM;
224 goto out;
225 }
226
227 err |= sw_add_optl_string(site, FM_FMRI_SW_SITE_TOKEN, site_token);
228 err |= sw_add_optl_string(site, FM_FMRI_SW_SITE_MODULE, site_module);
229 err |= sw_add_optl_string(site, FM_FMRI_SW_SITE_FILE, site_file);
230 err |= sw_add_optl_string(site, FM_FMRI_SW_SITE_FUNC, site_func);
231 if ((site_token || site_module || site_file || site_func) &&
232 site_line != -1)
233 err |= nvlist_add_int64(site, FM_FMRI_SW_SITE_LINE, site_line);
234
235 /*
236 * Add 'site' to the fmri.
237 */
238 if (err == 0)
239 err |= nvlist_add_nvlist(fmri, FM_FMRI_SW_SITE, site);
240
241 if (err) {
242 moderr = EMOD_NOMEM;
243 goto out;
244 }
245
246 context:
247 /*
248 * Do we have anything for a 'context' nvlist?
249 */
250 if (ctxt_origin || ctxt_execname || ctxt_zone ||
251 ctxt_pid != -1 || ctxt_ctid != -1 || ctxt_stack != NULL)
252 goto out;
253
254 /*
255 * Allocate and build 'context' nvlist.
256 */
257 if (topo_mod_nvalloc(mod, &ctxt, NV_UNIQUE_NAME) != 0) {
258 moderr = EMOD_NOMEM;
259 goto out;
260 }
261
262 err |= sw_add_optl_string(ctxt, FM_FMRI_SW_CTXT_ORIGIN, ctxt_origin);
263 err |= sw_add_optl_string(ctxt, FM_FMRI_SW_CTXT_EXECNAME,
264 ctxt_execname);
265 err |= sw_add_optl_string(ctxt, FM_FMRI_SW_CTXT_ZONE, ctxt_zone);
266 if (ctxt_pid != -1)
267 err |= nvlist_add_int64(ctxt, FM_FMRI_SW_CTXT_PID, ctxt_pid);
268 if (ctxt_ctid != -1)
269 err |= nvlist_add_int64(ctxt, FM_FMRI_SW_CTXT_CTID, ctxt_ctid);
270 if (ctxt_stack != NULL)
271 err |= nvlist_add_string_array(ctxt, FM_FMRI_SW_CTXT_STACK,
272 ctxt_stack, ctxt_stackdepth);
273
274 /*
275 * Add 'context' to the fmri.
276 */
277 if (err == 0)
278 err |= nvlist_add_nvlist(fmri, FM_FMRI_SW_CTXT, ctxt);
279
280 moderr = err ? EMOD_NOMEM : 0;
281 out:
282 if (moderr == 0)
283 *out = fmri;
284 else
285 nvlist_free(fmri);
286
287 nvlist_free(obj);
288 nvlist_free(site);
289 nvlist_free(ctxt);
290
291 return (moderr == 0 ? 0 : topo_mod_seterrno(mod, moderr));
292 }
293
294
295 /*ARGSUSED*/
296 static int
sw_enum(topo_mod_t * mod,tnode_t * pnode,const char * name,topo_instance_t min,topo_instance_t max,void * notused1,void * notused2)297 sw_enum(topo_mod_t *mod, tnode_t *pnode, const char *name,
298 topo_instance_t min, topo_instance_t max, void *notused1, void *notused2)
299 {
300 (void) topo_method_register(mod, pnode, sw_methods);
301 return (0);
302 }
303
304 static void
sw_release(topo_mod_t * mod,tnode_t * node)305 sw_release(topo_mod_t *mod, tnode_t *node)
306 {
307 topo_method_unregister_all(mod, node);
308 }
309
310 /*
311 * Lookup a string in an nvlist. Possible return values:
312 * if 'required' is B_TRUE:
313 * 1 = found
314 * 0 = not found
315 * if 'required' is B_FALSE:
316 * 1 = found
317 * 0 = not found, but some error other than ENOENT encountered
318 * -1 = not found, with ENOENT
319 *
320 * So 0 is an error condition in both cases.
321 *
322 * In all "not found" cases, *valp is NULLed.
323 */
324 static int
lookup_string(nvlist_t * nvl,char * name,char ** valp,boolean_t required)325 lookup_string(nvlist_t *nvl, char *name, char **valp, boolean_t required)
326 {
327 int err;
328
329 err = nvlist_lookup_string(nvl, name, valp);
330
331 /*
332 * A return value of 1 always means "found"
333 */
334 if (err == 0)
335 return (1);
336
337 /*
338 * Failure to lookup for whatever reason NULLs valp
339 */
340 *valp = NULL;
341
342 /*
343 * Return 0 if not found but required, or optional but some error
344 * other than ENOENT was returned.
345 */
346 if (required == B_TRUE || err != ENOENT)
347 return (0);
348
349 /*
350 * Return -1 if not found but was optional (and got ENOENT).
351 */
352 return (-1);
353 }
354
355 /*ARGSUSED*/
356 static int
sw_fmri_nvl2str(topo_mod_t * mod,tnode_t * node,topo_version_t version,nvlist_t * nvl,nvlist_t ** out)357 sw_fmri_nvl2str(topo_mod_t *mod, tnode_t *node, topo_version_t version,
358 nvlist_t *nvl, nvlist_t **out)
359 {
360 nvlist_t *object, *site = NULL, *anvl = NULL;
361 char *file, *func, *token;
362 uint8_t scheme_version;
363 char *path, *root;
364 nvlist_t *fmristr;
365 size_t buflen = 0;
366 int linevalid = 0;
367 char *buf = NULL;
368 ssize_t size = 0;
369 char linebuf[32];
370 int64_t line;
371 int pass;
372 int err;
373
374 if (version > TOPO_METH_NVL2STR_VERSION)
375 return (topo_mod_seterrno(mod, EMOD_VER_NEW));
376
377 if (nvlist_lookup_uint8(nvl, FM_VERSION, &scheme_version) != 0 ||
378 scheme_version > FM_SW_SCHEME_VERSION)
379 return (topo_mod_seterrno(mod, EMOD_FMRI_NVL));
380
381 /* Get authority, if present */
382 err = nvlist_lookup_nvlist(nvl, FM_FMRI_AUTHORITY, &anvl);
383 if (err != 0 && err != ENOENT)
384 return (topo_mod_seterrno(mod, EMOD_FMRI_NVL));
385
386 /*
387 * The 'object' nvlist is required. It must include the path,
388 * but the root is optional.
389 */
390 if (nvlist_lookup_nvlist(nvl, FM_FMRI_SW_OBJ, &object) != 0 ||
391 !lookup_string(object, FM_FMRI_SW_OBJ_PATH, &path, B_TRUE) ||
392 !lookup_string(object, FM_FMRI_SW_OBJ_ROOT, &root, B_FALSE))
393 return (topo_mod_seterrno(mod, EMOD_FMRI_NVL));
394
395 /* The 'site' nvlist is optional */
396 file = func = token = NULL;
397 linevalid = 0;
398 if ((err = nvlist_lookup_nvlist(nvl, FM_FMRI_SW_SITE, &site)) == 0) {
399 /*
400 * Prefer 'token' to file/func/line
401 */
402 if (lookup_string(site, FM_FMRI_SW_SITE_TOKEN, &token,
403 B_FALSE) <= 0) {
404 /*
405 * If no token then try file, func, line - but
406 * func and line are meaningless without file.
407 */
408 if (lookup_string(site, FM_FMRI_SW_SITE_FILE,
409 &file, B_FALSE) == 1) {
410 (void) lookup_string(site, FM_FMRI_SW_SITE_FUNC,
411 &func, B_FALSE);
412 if (nvlist_lookup_int64(site,
413 FM_FMRI_SW_SITE_LINE, &line) == 0)
414 linevalid = 1;
415 }
416 }
417 } else if (err != ENOENT) {
418 return (topo_mod_seterrno(mod, EMOD_FMRI_NVL));
419 }
420
421 /* On the first pass buf is NULL and size and buflen are 0 */
422 pass = 1;
423 again:
424 /*
425 * sw://[<authority>]/
426 * [:root=<object.root]
427 * :path=<object.path>
428 * [#<fragment-identifier>]
429 *
430 * <fragment-identifier> is one of
431 *
432 * :token=<site.token>
433 * or
434 * :file=<site.file>[:func=<site.func>][:line=<site.line>]
435 */
436
437 /* sw:// */
438 topo_fmristr_build(&size, buf, buflen, FM_FMRI_SCHEME_SW,
439 NULL, "://");
440
441 /* authority, if any */
442 if (anvl != NULL) {
443 nvpair_t *apair;
444 char *aname, *aval;
445
446 for (apair = nvlist_next_nvpair(anvl, NULL);
447 apair != NULL; apair = nvlist_next_nvpair(anvl, apair)) {
448 if (nvpair_type(apair) != DATA_TYPE_STRING ||
449 nvpair_value_string(apair, &aval) != 0)
450 continue;
451 aname = nvpair_name(apair);
452 topo_fmristr_build(&size, buf, buflen, ":", NULL, NULL);
453 topo_fmristr_build(&size, buf, buflen, "=",
454 aname, aval);
455 }
456 }
457
458 /* separating slash */
459 topo_fmristr_build(&size, buf, buflen, "/", NULL, NULL);
460
461 /* :root=... */
462 if (root) {
463 topo_fmristr_build(&size, buf, buflen, root,
464 ":" FM_FMRI_SW_OBJ_ROOT "=", NULL);
465 }
466
467 /* :path=... */
468 topo_fmristr_build(&size, buf, buflen, path,
469 ":" FM_FMRI_SW_OBJ_PATH "=", NULL);
470
471 if (token) {
472 /* #:token=... */
473 topo_fmristr_build(&size, buf, buflen, token,
474 "#:" FM_FMRI_SW_SITE_TOKEN "=", NULL);
475 } else if (file) {
476 /* #:file=... */
477 topo_fmristr_build(&size, buf, buflen, file,
478 "#:" FM_FMRI_SW_SITE_FILE "=", NULL);
479
480 /* :func=... */
481 if (func) {
482 topo_fmristr_build(&size, buf, buflen, func,
483 ":" FM_FMRI_SW_SITE_FUNC "=", NULL);
484 }
485
486 /* :line=... */
487 if (linevalid) {
488 if (pass == 1)
489 (void) snprintf(linebuf, sizeof (linebuf),
490 "%lld", line);
491
492 topo_fmristr_build(&size, buf, buflen, linebuf,
493 ":" FM_FMRI_SW_SITE_LINE "=", NULL);
494 }
495 }
496
497 if (buf == NULL) {
498 if ((buf = topo_mod_alloc(mod, size + 1)) == NULL)
499 return (topo_mod_seterrno(mod, EMOD_NOMEM));
500
501 buflen = size + 1;
502 size = 0;
503 pass = 2;
504 goto again;
505 }
506
507 /*
508 * Construct the nvlist to return as the result.
509 */
510 if (topo_mod_nvalloc(mod, &fmristr, NV_UNIQUE_NAME) != 0) {
511 topo_mod_strfree(mod, buf);
512 return (topo_mod_seterrno(mod, EMOD_NOMEM));
513 }
514
515 if (nvlist_add_string(fmristr, "fmri-string", buf) != 0) {
516 topo_mod_strfree(mod, buf);
517 nvlist_free(fmristr);
518 return (topo_mod_seterrno(mod, EMOD_NOMEM));
519 }
520 topo_mod_strfree(mod, buf);
521 *out = fmristr;
522
523 return (0);
524 }
525