diff options
Diffstat (limited to 'libglusterfs')
| -rw-r--r-- | libglusterfs/src/xlator.c | 105 | ||||
| -rw-r--r-- | libglusterfs/src/xlator.h | 8 |
2 files changed, 110 insertions, 3 deletions
diff --git a/libglusterfs/src/xlator.c b/libglusterfs/src/xlator.c index 9b91729ec..ccc32b711 100644 --- a/libglusterfs/src/xlator.c +++ b/libglusterfs/src/xlator.c @@ -1178,7 +1178,64 @@ xlator_set_type_virtual (xlator_t *xl, const char *type) out: return -1; } +int32_t +xlator_volopt_dynload (char *xlator_type, void **dl_handle, + volume_opt_list_t *opt_list) +{ + int ret = -1; + char *name = NULL; + void *handle = NULL; + volume_opt_list_t *vol_opt = NULL; + + GF_VALIDATE_OR_GOTO ("xlator", xlator_type, out); + + GF_ASSERT (dl_handle); + + if (*dl_handle) + if (dlclose (*dl_handle)) + gf_log ("xlator", GF_LOG_WARNING, "Unable to close " + "previously opened handle( may be stale)." + "Ignoring the invalid handle"); + + ret = gf_asprintf (&name, "%s/%s.so", XLATORDIR, xlator_type); + if (-1 == ret) { + gf_log ("xlator", GF_LOG_ERROR, "asprintf failed"); + goto out; + } + + ret = -1; + + gf_log ("xlator", GF_LOG_TRACE, "attempt to load file %s", name); + + handle = dlopen (name, RTLD_NOW|RTLD_GLOBAL); + if (!handle) { + gf_log ("xlator", GF_LOG_WARNING, "%s", dlerror ()); + goto out; + } + *dl_handle = handle; + + INIT_LIST_HEAD (&opt_list->list); + + vol_opt = GF_CALLOC (1, sizeof (volume_opt_list_t), + gf_common_mt_volume_opt_list_t); + if (!vol_opt) { + goto out; + } + + if (!(vol_opt->given_opt = dlsym (handle, "options"))) { + dlerror (); + gf_log ("xlator", GF_LOG_DEBUG, + "Strict option validation not enforced -- neglecting"); + } + list_add_tail (&vol_opt->list, &opt_list->list); + + ret = 0; + out: + gf_log ("xlator", GF_LOG_DEBUG, "Returning %d", ret); + return ret; + +} int32_t xlator_dynload (xlator_t *xl) @@ -1853,3 +1910,51 @@ glusterd_check_log_level (const char *value) return log_level; } + +int +xlator_get_volopt_info (struct list_head *opt_list, char *key, char **def_val, + char **descr) +{ + + int index = 0; + int ret = -1; + volume_opt_list_t *vol_list = NULL; + volume_option_t *opt = NULL; + + if (!opt_list || !key || !def_val ) { + gf_log ("", GF_LOG_WARNING, " Parameters to the function not " + "valid"); + ret = -1; + goto out; + } + + if (list_empty (opt_list)) { + gf_log ("xlator", GF_LOG_WARNING, "No elements in Volume option" + " list"); + ret = -1; + goto out; + } + + + vol_list = list_entry (opt_list->next, volume_opt_list_t, list); + + opt = vol_list->given_opt; + + for (index = 0; opt[index].key && opt[index].key[0] ; index++) { + if (strncmp (key, opt[index].key[0], strlen (key))) + continue; + + *def_val = opt[index].default_value; + if (descr) + *descr = opt[index].description; + ret = 0; + goto out; + } + + ret = -1; + +out: + gf_log ("", GF_LOG_DEBUG, "Returning %d", ret); + return ret; + +} diff --git a/libglusterfs/src/xlator.h b/libglusterfs/src/xlator.h index 60fd77761..23fb3192a 100644 --- a/libglusterfs/src/xlator.h +++ b/libglusterfs/src/xlator.h @@ -786,6 +786,7 @@ typedef struct volume_options { char *value[ZR_OPTION_MAX_ARRAY_SIZE]; /* If specified, will check for one of the value from this array */ + char *default_value; char *description; /* about the key */ } volume_option_t; @@ -881,7 +882,8 @@ int _volume_option_value_validate_attacherr (xlator_t *xl, data_pair_t *pair, volume_option_t *opt, char **op_errstr); - - - +int32_t xlator_volopt_dynload (char *xlator_type, void **dl_handle, + volume_opt_list_t *vol_opt_handle); +int xlator_get_volopt_info (struct list_head *opt_list, char *key, + char **def_val, char **descr); #endif /* _XLATOR_H */ |