2 * Copyright (c) 2004, 2005 Christophe Varoqui
3 * Copyright (c) 2004 Stefan Bader, IBM
7 #include <libdevmapper.h>
17 #include "structs_vec.h"
18 #include "blacklist.h"
26 pp = (struct path *)MALLOC(sizeof(struct path));
29 pp->sg_id.host_no = -1;
30 pp->sg_id.channel = -1;
31 pp->sg_id.scsi_id = -1;
34 pp->priority = PRIO_UNDEF;
40 free_path (struct path * pp)
45 if (checker_selected(&pp->checker))
46 checker_put(&pp->checker);
52 udev_device_unref(pp->udev);
60 free_pathvec (vector vec, enum free_path_mode free_paths)
68 if (free_paths == FREE_PATHS)
69 vector_foreach_slot(vec, pp, i)
76 alloc_pathgroup (void)
78 struct pathgroup * pgp;
80 pgp = (struct pathgroup *)MALLOC(sizeof(struct pathgroup));
85 pgp->paths = vector_alloc();
96 free_pathgroup (struct pathgroup * pgp, enum free_path_mode free_paths)
101 free_pathvec(pgp->paths, free_paths);
106 free_pgvec (vector pgvec, enum free_path_mode free_paths)
109 struct pathgroup * pgp;
114 vector_foreach_slot(pgvec, pgp, i)
115 free_pathgroup(pgp, free_paths);
121 alloc_multipath (void)
123 struct multipath * mpp;
125 mpp = (struct multipath *)MALLOC(sizeof(struct multipath));
129 mpp->mpcontext = NULL;
130 mpp->no_path_retry = NO_PATH_RETRY_UNDEF;
136 free_multipath_attributes (struct multipath * mpp)
142 mpp->selector != conf->selector &&
143 (!mpp->mpe || (mpp->mpe && mpp->selector != mpp->mpe->selector)) &&
144 (!mpp->hwe || (mpp->hwe && mpp->selector != mpp->hwe->selector))) {
146 mpp->selector = NULL;
151 mpp->features = NULL;
154 if (mpp->hwhandler &&
155 mpp->hwhandler != conf->hwhandler &&
156 (!mpp->hwe || (mpp->hwe && mpp->hwhandler != mpp->hwe->hwhandler))) {
157 FREE(mpp->hwhandler);
158 mpp->hwhandler = NULL;
163 free_multipath (struct multipath * mpp, enum free_path_mode free_paths)
168 free_multipath_attributes(mpp);
180 free_pathvec(mpp->paths, free_paths);
181 free_pgvec(mpp->pg, free_paths);
182 FREE_PTR(mpp->mpcontext);
187 drop_multipath (vector mpvec, char * wwid, enum free_path_mode free_paths)
190 struct multipath * mpp;
195 vector_foreach_slot (mpvec, mpp, i) {
196 if (!strncmp(mpp->wwid, wwid, WWID_SIZE)) {
197 free_multipath(mpp, free_paths);
198 vector_del_slot(mpvec, i);
205 free_multipathvec (vector mpvec, enum free_path_mode free_paths)
208 struct multipath * mpp;
213 vector_foreach_slot (mpvec, mpp, i)
214 free_multipath(mpp, free_paths);
220 store_path (vector pathvec, struct path * pp)
222 if (!vector_alloc_slot(pathvec))
225 vector_set_slot(pathvec, pp);
231 store_pathgroup (vector pgvec, struct pathgroup * pgp)
233 if (!vector_alloc_slot(pgvec))
236 vector_set_slot(pgvec, pgp);
242 find_mp_by_minor (vector mpvec, int minor)
245 struct multipath * mpp;
250 vector_foreach_slot (mpvec, mpp, i) {
254 if (mpp->dmi->minor == minor)
261 find_mp_by_wwid (vector mpvec, char * wwid)
264 struct multipath * mpp;
269 vector_foreach_slot (mpvec, mpp, i)
270 if (!strncmp(mpp->wwid, wwid, WWID_SIZE))
277 find_mp_by_alias (vector mpvec, char * alias)
281 struct multipath * mpp;
291 vector_foreach_slot (mpvec, mpp, i) {
292 if (strlen(mpp->alias) == len &&
293 !strncmp(mpp->alias, alias, len))
300 find_mp_by_str (vector mpvec, char * str)
304 if (sscanf(str, "dm-%d", &minor) == 1)
305 return find_mp_by_minor(mpvec, minor);
307 return find_mp_by_alias(mpvec, str);
311 find_path_by_dev (vector pathvec, char * dev)
319 vector_foreach_slot (pathvec, pp, i)
320 if (!strcmp(pp->dev, dev))
323 condlog(3, "%s: not found in pathvec", dev);
328 find_path_by_devt (vector pathvec, char * dev_t)
336 vector_foreach_slot (pathvec, pp, i)
337 if (!strcmp(pp->dev_t, dev_t))
340 condlog(3, "%s: not found in pathvec", dev_t);
345 pathcountgr (struct pathgroup * pgp, int state)
351 vector_foreach_slot (pgp->paths, pp, i)
352 if ((pp->state == state) || (state == PATH_WILD))
359 pathcount (struct multipath * mpp, int state)
361 struct pathgroup *pgp;
366 vector_foreach_slot (mpp->pg, pgp, i)
367 count += pathcountgr(pgp, state);
373 pathcmp (struct pathgroup *pgp, struct pathgroup *cpgp)
376 struct path *pp, *cpp;
377 int pnum = 0, found = 0;
379 vector_foreach_slot(pgp->paths, pp, i) {
381 vector_foreach_slot(cpgp->paths, cpp, j) {
382 if ((long)pp == (long)cpp) {
393 first_path (struct multipath * mpp)
395 struct pathgroup * pgp;
398 pgp = VECTOR_SLOT(mpp->pg, 0);
400 return pgp?VECTOR_SLOT(pgp->paths, 0):NULL;
404 setup_feature(struct multipath * mpp, char *feature)
406 if (!strncmp(feature, "queue_if_no_path", 16)) {
407 if (mpp->no_path_retry <= NO_PATH_RETRY_UNDEF)
408 mpp->no_path_retry = NO_PATH_RETRY_QUEUE;
413 add_feature (char **f, char *n)
425 /* Check if feature is already present */
429 /* Get feature count */
430 c = strtoul(*f, &e, 10);
435 /* Check if we need to increase feature count space */
436 l = strlen(*f) + strlen(n) + 1;
438 /* Count new features */
444 if (*p == ' ' && p[1] != '\0' && p[1] != ' ') {
458 /* Update feature count */
466 snprintf(p, l + 2, "%0d ", c);
468 /* Copy the feature string */
487 remove_feature(char **f, char *o)
496 if (!o || *o == '\0')
499 /* Check if not present */
503 /* Get feature count */
504 c = strtoul(*f, &e, 10);
509 /* Normalize features */
513 /* Just spaces, return */
521 /* Update feature count */
524 while (p[0] != '\0') {
525 if (p[0] == ' ' && p[1] != ' ' && p[1] != '\0')
530 /* Quick exit if all features have been removed */
539 /* Search feature to be removed */
542 /* Not found, return */
545 /* Update feature count space */
551 /* Copy the feature count */
552 sprintf(n, "%0d", c);
554 * Copy existing features up to the feature
555 * about to be removed
567 strncat(n, p, (size_t)(e - p));
568 p += (size_t)(e - p);
570 /* Skip feature to be removed */
573 /* Copy remaining features */