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Implement lvm_vg_set_property() by calling internal 'set' property function.

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Signed-off-by: Dave Wysochanski <wysochanski@pobox.com>
Reviewed-by: Petr Rockai <prockai@redhat.com>
This commit is contained in:
Petr Rockai 2010-11-17 19:16:05 +00:00
parent fd82d8c129
commit eeaf3ba70a
4 changed files with 68 additions and 0 deletions
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30
liblvm/lvm2app.h
View File

@ -911,6 +911,36 @@ struct dm_list *lvm_vg_get_tags(const vg_t vg);
*/
struct lvm_property_value lvm_vg_get_property(const vg_t vg, const char *name);
/**
* Set the value of a VG property. Note that the property must be
* a 'settable' property, as evidenced by the 'is_settable' flag
* when querying the property.
*
* \memberof vg_t
*
* The memory allocated for a string property value is tied to the vg_t
* handle and will be released when lvm_vg_close() is called.
*
* Example (integer):
* lvm_property_value copies;
*
* if (lvm_vg_get_property(vg, "vg_mda_copies", &copies) < 0) {
* // Error - unable to query property
* }
* if (!copies.is_settable) {
* // Error - property not settable
* }
* copies.value.integer = 2;
* if (lvm_vg_set_property(vg, "vg_mda_copies", &copies) < 0) {
* // handle error
* }
*
* \return
* 0 (success) or -1 (failure).
*/
int lvm_vg_set_property(const vg_t vg, const char *name,
struct lvm_property_value *value);
/************************** logical volume handling *************************/
/**

30
liblvm/lvm_misc.c
View File

@ -78,3 +78,33 @@ struct lvm_property_value get_property(const pv_t pv, const vg_t vg,
v.is_valid = 1;
return v;
}
int set_property(const pv_t pv, const vg_t vg, const lv_t lv,
const char *name, struct lvm_property_value *v)
{
struct lvm_property_type prop;
prop.id = name;
if (v->is_string)
prop.value.string = v->value.string;
else
prop.value.integer = v->value.integer;
if (pv) {
if (!pv_set_property(pv, &prop)) {
v->is_valid = 0;
return -1;
}
} else if (vg) {
if (!vg_set_property(vg, &prop)) {
v->is_valid = 0;
return -1;
}
} else if (lv) {
if (!lv_set_property(lv, &prop)) {
v->is_valid = 0;
return -1;
}
}
return 0;
}

2
liblvm/lvm_misc.h
View File

@ -19,5 +19,7 @@
struct dm_list *tag_list_copy(struct dm_pool *p, struct dm_list *tag_list);
struct lvm_property_value get_property(const pv_t pv, const vg_t vg,
const lv_t lv, const char *name);
int set_property(const pv_t pv, const vg_t vg, const lv_t lv,
const char *name, struct lvm_property_value *value);
#endif

6
liblvm/lvm_vg.c
View File

@ -341,6 +341,12 @@ struct lvm_property_value lvm_vg_get_property(const vg_t vg, const char *name)
return get_property(NULL, vg, NULL, name);
}
int lvm_vg_set_property(const vg_t vg, const char *name,
struct lvm_property_value *value)
{
return set_property(NULL, vg, NULL, name, value);
}
struct dm_list *lvm_list_vg_names(lvm_t libh)
{
return get_vgnames((struct cmd_context *)libh, 0);