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toollib: Add --cachepolicy and implement get_cachepolicy_params.

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This commit is contained in:
Petr Rockai 2014-11-19 18:39:29 +01:00
parent d22ffd8c28
commit f67e1fadb0
3 changed files with 72 additions and 0 deletions
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1
tools/args.h
View File

@ -104,6 +104,7 @@ arg(trustcache_ARG, '\0', "trustcache", NULL, 0)
arg(type_ARG, '\0', "type", segtype_arg, 0)
arg(unbuffered_ARG, '\0', "unbuffered", NULL, 0)
arg(uncache_ARG, '\0', "uncache", NULL, 0)
arg(cachepolicy_ARG, '\0', "cachepolicy", string_arg, ARG_GROUPABLE)
arg(units_ARG, '\0', "units", string_arg, 0)
arg(unquoted_ARG, '\0', "unquoted", NULL, 0)
arg(use_policies_ARG, '\0', "use-policies", NULL, 0)

69
tools/toollib.c
View File

@ -1116,6 +1116,75 @@ int get_stripe_params(struct cmd_context *cmd, uint32_t *stripes, uint32_t *stri
return _validate_stripe_params(cmd, stripes, stripe_size);
}
static int _validate_cachepool_params(struct dm_config_tree *tree)
{
return 1;
}
struct dm_config_tree *get_cachepolicy_params(struct cmd_context *cmd)
{
const char *str;
struct arg_value_group_list *group;
struct dm_config_tree *result = NULL, *prev = NULL, *current = NULL;
struct dm_config_node *cn, *last = NULL;
dm_list_iterate_items(group, &cmd->arg_value_groups) {
if (!grouped_arg_is_set(group->arg_values, cachepolicy_ARG))
continue;
current = dm_config_create();
if (!current)
goto_bad;
if (prev)
current->cascade = prev;
prev = current;
if (!(str = grouped_arg_str_value(group->arg_values,
cachepolicy_ARG,
NULL)))
goto_bad;
if (!dm_config_parse(current, str, str + strlen(str)))
goto_bad;
}
result = dm_config_flatten(current);
if (!(cn = dm_config_create_node(result, "policy_settings"))) {
dm_config_destroy(result);
result = NULL;
}
cn->child = result->root;
result->root = cn;
cn = cn->child;
while (cn) {
if (!strcmp(cn->key, "policy")) {
if (last)
last->sib = cn->sib;
else
result->root->child = cn->sib;
cn->parent = NULL;
cn->sib = NULL;
result->root->sib = cn;
}
last = cn;
cn = cn->sib;
}
if (!_validate_cachepool_params(current)) {
dm_config_destroy(result);
result = NULL;
}
bad:
while (prev) {
current = prev->cascade;
dm_config_destroy(prev);
prev = current;
}
return result;
}
/* FIXME move to lib */
static int _pv_change_tag(struct physical_volume *pv, const char *tag, int addtag)
{

2
tools/toollib.h
View File

@ -123,6 +123,8 @@ int get_pool_params(struct cmd_context *cmd,
int get_stripe_params(struct cmd_context *cmd, uint32_t *stripes,
uint32_t *stripe_size);
struct dm_config_tree *get_cachepolicy_params(struct cmd_context *cmd);
int change_tag(struct cmd_context *cmd, struct volume_group *vg,
struct logical_volume *lv, struct physical_volume *pv, int arg);