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config: add CFG_SECTION_NO_CHECK flag

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The CFG_SECTION_NO_CHECK flag can be used to mark a section
and its whole subtree as containing settings where checks
won't be made (lvmconfig --validate).

These are setting where we don't know the names and and type
in advance and they're recognized in runtime. As we don't know
the type and name in advance, we can't do any checks here
of course.

Use this flag with great care as it disables config checks
for the whole config subtree found under such section.

This flag is going to be used by subsequent patches from
Zdenek to support some cache settings...
This commit is contained in:
Peter Rajnoha 2015-07-22 14:19:07 +02:00
parent 00d24511bc
commit 8bfcefe11a
3 changed files with 9 additions and 6 deletions
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12
lib/config/config.c
View File

@ -1040,9 +1040,14 @@ static int _config_def_check_tree(struct cft_check_handle *handle,
size_t buf_size, struct dm_config_node *root)
{
struct dm_config_node *cn;
cfg_def_item_t *def;
int valid, r = 1;
size_t len;
def = cfg_def_get_item_p(root->id);
if (def->flags & CFG_SECTION_NO_CHECK)
return 1;
for (cn = root->child; cn; cn = cn->sib) {
if ((valid = _config_def_check_node(handle, vp, pvp, rp, prp,
buf_size, cn)) && !cn->v) {
@ -1662,14 +1667,9 @@ static int _out_prefix_fn(const struct dm_config_node *cn, const char *line, voi
char path[CFG_PATH_MAX_LEN];
char commentline[MAX_COMMENT_LINE+1];
if (cn->id < 0)
if (cn->id <= 0)
return 1;
if (!cn->id) {
log_error(INTERNAL_ERROR "Configuration node %s has invalid id.", cn->key);
return 0;
}
if (out->tree_spec->type == CFG_DEF_TREE_LIST)
return 1;

2
lib/config/config.h
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@ -121,6 +121,8 @@ typedef union {
#define CFG_DISABLED 0x200
/* whether to print integers in octal form (prefixed by "0") */
#define CFG_FORMAT_INT_OCTAL 0x400
/* whether to disable checks for the whole config section subtree */
#define CFG_SECTION_NO_CHECK 0x800
/* configuration definition item structure */
typedef struct cfg_def_item {

1
lib/config/config_settings.h
View File

@ -51,6 +51,7 @@
* CFG_DEFAULT_COMMENTED - node's default value is commented out on output
* CFG_DISABLED - configuration is disabled (defaults always used)
* CFG_FORMAT_INT_OCTAL - print integer number in octal form (also prefixed by "0")
* CFG_SECTION_NO_CHECK - do not check content of the section at all - use with care!!!
*
* type: Allowed type for the value of simple configuation setting, one of:
* CFG_TYPE_BOOL