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Add policy_action support 

Add code for easy working 'action' policies.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2010-08-23 14:33:28 +10:00
parent 5527fc7462
commit e3bb5f144b
2 changed files with 58 additions and 0 deletions
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13
mdadm.h
View File

@ -792,6 +792,19 @@ extern void dev_policy_free(struct dev_policy *p);
extern void pol_new(struct dev_policy **pol, char *name, char *val, char *metadata);
extern struct dev_policy *pol_find(struct dev_policy *pol, char *name);
enum policy_action {
act_default,
act_include,
act_re_add,
act_spare,
act_force_spare,
act_err
};
extern int policy_action_allows(struct dev_policy *plist, const char *metadata,
enum policy_action want);
extern int disk_action_allows(struct mdinfo *disk, const char *metadata,
enum policy_action want);
#if __GNUC__ < 3
struct stat64;
#endif

45
policy.c
View File

@ -459,3 +459,48 @@ void dev_policy_free(struct dev_policy *p)
free(t);
}
}
static enum policy_action map_act(char *act)
{
if (strcmp(act, "include") == 0)
return act_include;
if (strcmp(act, "re-add") == 0)
return act_re_add;
if (strcmp(act, "spare") == 0)
return act_spare;
if (strcmp(act, "force-spare") == 0)
return act_force_spare;
return act_err;
}
static enum policy_action policy_action(struct dev_policy *plist, const char *metadata)
{
enum policy_action rv = act_default;
struct dev_policy *p;
plist = pol_find(plist, pol_act);
pol_for_each(p, plist, metadata) {
enum policy_action a = map_act(p->value);
if (a > rv)
rv = a;
}
return rv;
}
int policy_action_allows(struct dev_policy *plist, const char *metadata, enum policy_action want)
{
enum policy_action act = policy_action(plist, metadata);
if (act == act_err)
return 0;
return (act >= want);
}
int disk_action_allows(struct mdinfo *disk, const char *metadata, enum policy_action want)
{
struct dev_policy *pol = disk_policy(disk);
int rv = policy_action_allows(pol, metadata, want);
dev_policy_free(pol);
return rv;
}