12 char *checker_state_names[] = {
25 static LIST_HEAD(checkers);
27 char * checker_state_name (int i)
29 return checker_state_names[i];
32 int init_checkers (void)
34 if (!add_checker(DEFAULT_CHECKER))
39 struct checker * alloc_checker (void)
43 c = MALLOC(sizeof(struct checker));
45 INIT_LIST_HEAD(&c->node);
51 void free_checker (struct checker * c)
57 condlog(3, "%s checker refcount %d",
58 c->name, c->refcount);
61 condlog(3, "unloading %s checker", c->name);
64 if (dlclose(c->handle) != 0) {
65 condlog(0, "Cannot unload checker %s: %s",
72 void cleanup_checkers (void)
74 struct checker * checker_loop;
75 struct checker * checker_temp;
77 list_for_each_entry_safe(checker_loop, checker_temp, &checkers, node) {
78 free_checker(checker_loop);
82 struct checker * checker_lookup (char * name)
86 if (!name || !strlen(name))
88 list_for_each_entry(c, &checkers, node) {
89 if (!strncmp(name, c->name, CHECKER_NAME_LEN))
92 return add_checker(name);
95 struct checker * add_checker (char * name)
97 char libname[LIB_CHECKER_NAMELEN];
105 snprintf(c->name, CHECKER_NAME_LEN, "%s", name);
106 snprintf(libname, LIB_CHECKER_NAMELEN, "%s/libcheck%s.so",
107 conf->multipath_dir, name);
108 if (stat(libname,&stbuf) < 0) {
109 condlog(0,"Checker '%s' not found in %s",
110 name, conf->multipath_dir);
113 condlog(3, "loading %s checker", libname);
114 c->handle = dlopen(libname, RTLD_NOW);
116 if ((errstr = dlerror()) != NULL)
117 condlog(0, "A dynamic linking error occurred: (%s)",
121 c->check = (int (*)(struct checker *)) dlsym(c->handle, "libcheck_check");
124 condlog(0, "A dynamic linking error occurred: (%s)", errstr);
128 c->init = (int (*)(struct checker *)) dlsym(c->handle, "libcheck_init");
131 condlog(0, "A dynamic linking error occurred: (%s)", errstr);
135 c->free = (void (*)(struct checker *)) dlsym(c->handle, "libcheck_free");
138 condlog(0, "A dynamic linking error occurred: (%s)", errstr);
144 list_add(&c->node, &checkers);
151 void checker_set_fd (struct checker * c, int fd)
158 void checker_set_sync (struct checker * c)
165 void checker_set_async (struct checker * c)
172 void checker_enable (struct checker * c)
179 void checker_disable (struct checker * c)
186 int checker_init (struct checker * c, void ** mpctxt_addr)
190 c->mpcontext = mpctxt_addr;
194 void checker_put (struct checker * dst)
196 struct checker * src;
198 if (!dst || !dst->check)
200 src = checker_lookup(dst->name);
203 memset(dst, 0x0, sizeof(struct checker));
207 int checker_check (struct checker * c)
214 c->message[0] = '\0';
216 MSG(c, "checker disabled");
217 return PATH_UNCHECKED;
220 MSG(c, "no usable fd");
228 int checker_selected (struct checker * c)
232 return (c->check) ? 1 : 0;
235 char * checker_name (struct checker * c)
242 char * checker_message (struct checker * c)
249 void checker_clear_message (struct checker *c)
253 c->message[0] = '\0';
256 void checker_get (struct checker * dst, char * name)
258 struct checker * src = checker_lookup(name);
268 dst->sync = src->sync;
269 strncpy(dst->name, src->name, CHECKER_NAME_LEN);
270 strncpy(dst->message, src->message, CHECKER_MSG_LEN);
271 dst->check = src->check;
272 dst->init = src->init;
273 dst->free = src->free;