2 * Copyright (c) 2004, 2005 Christophe Varoqui
3 * Copyright (c) 2004 Stefan Bader, IBM
7 #include <libdevmapper.h>
16 #include "structs_vec.h"
17 #include "blacklist.h"
25 pp = (struct path *)MALLOC(sizeof(struct path));
28 pp->sg_id.host_no = -1;
29 pp->sg_id.channel = -1;
30 pp->sg_id.scsi_id = -1;
33 pp->priority = PRIO_UNDEF;
39 free_path (struct path * pp)
44 if (checker_selected(&pp->checker))
45 checker_put(&pp->checker);
54 free_pathvec (vector vec, enum free_path_mode free_paths)
62 if (free_paths == FREE_PATHS)
63 vector_foreach_slot(vec, pp, i)
70 alloc_pathgroup (void)
72 struct pathgroup * pgp;
74 pgp = (struct pathgroup *)MALLOC(sizeof(struct pathgroup));
79 pgp->paths = vector_alloc();
90 free_pathgroup (struct pathgroup * pgp, enum free_path_mode free_paths)
95 free_pathvec(pgp->paths, free_paths);
100 free_pgvec (vector pgvec, enum free_path_mode free_paths)
103 struct pathgroup * pgp;
108 vector_foreach_slot(pgvec, pgp, i)
109 free_pathgroup(pgp, free_paths);
115 alloc_multipath (void)
117 struct multipath * mpp;
119 mpp = (struct multipath *)MALLOC(sizeof(struct multipath));
123 mpp->mpcontext = NULL;
124 mpp->no_path_retry = NO_PATH_RETRY_UNDEF;
130 free_multipath_attributes (struct multipath * mpp)
136 mpp->selector != conf->selector &&
137 (!mpp->mpe || (mpp->mpe && mpp->selector != mpp->mpe->selector)) &&
138 (!mpp->hwe || (mpp->hwe && mpp->selector != mpp->hwe->selector))) {
140 mpp->selector = NULL;
145 mpp->features = NULL;
148 if (mpp->hwhandler &&
149 mpp->hwhandler != conf->hwhandler &&
150 (!mpp->hwe || (mpp->hwe && mpp->hwhandler != mpp->hwe->hwhandler))) {
151 FREE(mpp->hwhandler);
152 mpp->hwhandler = NULL;
157 free_multipath (struct multipath * mpp, enum free_path_mode free_paths)
162 free_multipath_attributes(mpp);
174 free_pathvec(mpp->paths, free_paths);
175 free_pgvec(mpp->pg, free_paths);
176 FREE_PTR(mpp->mpcontext);
181 drop_multipath (vector mpvec, char * wwid, enum free_path_mode free_paths)
184 struct multipath * mpp;
189 vector_foreach_slot (mpvec, mpp, i) {
190 if (!strncmp(mpp->wwid, wwid, WWID_SIZE)) {
191 free_multipath(mpp, free_paths);
192 vector_del_slot(mpvec, i);
199 free_multipathvec (vector mpvec, enum free_path_mode free_paths)
202 struct multipath * mpp;
207 vector_foreach_slot (mpvec, mpp, i)
208 free_multipath(mpp, free_paths);
214 store_path (vector pathvec, struct path * pp)
216 if (!vector_alloc_slot(pathvec))
219 vector_set_slot(pathvec, pp);
225 store_pathgroup (vector pgvec, struct pathgroup * pgp)
227 if (!vector_alloc_slot(pgvec))
230 vector_set_slot(pgvec, pgp);
236 find_mp_by_minor (vector mpvec, int minor)
239 struct multipath * mpp;
244 vector_foreach_slot (mpvec, mpp, i) {
248 if (mpp->dmi->minor == minor)
255 find_mp_by_wwid (vector mpvec, char * wwid)
258 struct multipath * mpp;
263 vector_foreach_slot (mpvec, mpp, i)
264 if (!strncmp(mpp->wwid, wwid, WWID_SIZE))
271 find_mp_by_alias (vector mpvec, char * alias)
275 struct multipath * mpp;
285 vector_foreach_slot (mpvec, mpp, i) {
286 if (strlen(mpp->alias) == len &&
287 !strncmp(mpp->alias, alias, len))
294 find_mp_by_str (vector mpvec, char * str)
298 if (sscanf(str, "dm-%d", &minor) == 1)
299 return find_mp_by_minor(mpvec, minor);
301 return find_mp_by_alias(mpvec, str);
305 find_path_by_dev (vector pathvec, char * dev)
313 vector_foreach_slot (pathvec, pp, i)
314 if (!strcmp(pp->dev, dev))
317 condlog(3, "%s: not found in pathvec", dev);
322 find_path_by_devt (vector pathvec, char * dev_t)
330 vector_foreach_slot (pathvec, pp, i)
331 if (!strcmp(pp->dev_t, dev_t))
334 condlog(3, "%s: not found in pathvec", dev_t);
339 pathcountgr (struct pathgroup * pgp, int state)
345 vector_foreach_slot (pgp->paths, pp, i)
346 if ((pp->state == state) || (state == PATH_WILD))
353 pathcount (struct multipath * mpp, int state)
355 struct pathgroup *pgp;
360 vector_foreach_slot (mpp->pg, pgp, i)
361 count += pathcountgr(pgp, state);
367 pathcmp (struct pathgroup *pgp, struct pathgroup *cpgp)
370 struct path *pp, *cpp;
371 int pnum = 0, found = 0;
373 vector_foreach_slot(pgp->paths, pp, i) {
375 vector_foreach_slot(cpgp->paths, cpp, j) {
376 if ((long)pp == (long)cpp) {
387 first_path (struct multipath * mpp)
389 struct pathgroup * pgp;
392 pgp = VECTOR_SLOT(mpp->pg, 0);
394 return pgp?VECTOR_SLOT(pgp->paths, 0):NULL;
398 setup_feature(struct multipath * mpp, char *feature)
400 if (!strncmp(feature, "queue_if_no_path", 16)) {
401 if (mpp->no_path_retry <= NO_PATH_RETRY_UNDEF)
402 mpp->no_path_retry = NO_PATH_RETRY_QUEUE;
407 add_feature (char **f, char *n)
419 /* Check if feature is already present */
423 /* Get feature count */
424 c = strtoul(*f, &e, 10);
429 /* Check if we need to increase feature count space */
430 l = strlen(*f) + strlen(n) + 1;
432 /* Count new features */
438 if (*p == ' ' && p[1] != '\0' && p[1] != ' ') {
452 /* Update feature count */
460 snprintf(p, l + 2, "%0d ", c);
462 /* Copy the feature string */
481 remove_feature(char **f, char *o)
490 if (!o || *o == '\0')
493 /* Check if not present */
497 /* Get feature count */
498 c = strtoul(*f, &e, 10);
503 /* Normalize features */
507 /* Just spaces, return */
515 /* Update feature count */
518 while (p[0] != '\0') {
519 if (p[0] == ' ' && p[1] != ' ' && p[1] != '\0')
524 /* Quick exit if all features have been removed */
533 /* Search feature to be removed */
536 /* Not found, return */
539 /* Update feature count space */
545 /* Copy the feature count */
546 sprintf(n, "%0d", c);
548 * Copy existing features up to the feature
549 * about to be removed
561 strncat(n, p, (size_t)(e - p));
562 p += (size_t)(e - p);
564 /* Skip feature to be removed */
567 /* Copy remaining features */