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Add list_versions to library

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This commit is contained in:
Alasdair Kergon 2004-03-26 19:52:09 +00:00
parent c1f5052199
commit d1f4953ad4
2 changed files with 47 additions and 1 deletions
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44
lib/activate/activate.c
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@ -47,6 +47,10 @@ int driver_version(char *version, size_t size)
{
return 0;
}
int target_present(const char *target_name)
{
return 0;
}
int lv_info(const struct logical_volume *lv, struct lvinfo *info)
{
return 0;
@ -258,6 +262,46 @@ int driver_version(char *version, size_t size)
return r;
}
int target_present(const char *target_name)
{
int r = 0;
struct dm_task *dmt;
struct dm_versions *target, *last_target;
if (!activation())
return 0;
log_very_verbose("Getting target version for %s", target_name);
if (!(dmt = dm_task_create(DM_DEVICE_LIST_VERSIONS))) {
stack;
return 0;
}
if (!dm_task_run(dmt)) {
log_debug("Failed to get %s target version", target_name);
/* Assume this was because LIST_VERSIONS isn't supported */
return 1;
}
target = dm_task_get_versions(dmt);
do {
last_target = target;
if (!strcmp(target_name, target->name)) {
r = 1;
goto out;
}
target = (void *) target + target->next;
} while (last_target != target);
out:
dm_task_destroy(dmt);
return r;
}
/*
* Returns 1 if info structure populated, else 0 on failure.
*/

4
lib/activate/activate.h
View File

@ -28,6 +28,8 @@ int activation(void);
int driver_version(char *version, size_t size);
int library_version(char *version, size_t size);
int target_present(const char *target_name);
void activation_exit(void);
int lv_suspend(struct cmd_context *cmd, const char *lvid_s);
@ -51,7 +53,7 @@ int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s,
* Returns 1 if activate_lv has been set: 1 = activate; 0 = don't.
*/
int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s,
int *activate_lv);
int *activate_lv);
/*
* Returns 1 if percent has been set, else 0.