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Add guess_super_type 

This can select to only guess array types,
or only guess partition types.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2010-09-02 11:54:06 +10:00
parent 73c9c47c70
commit 54887ad8cb
2 changed files with 10 additions and 2 deletions
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6
mdadm.h
View File

@ -729,7 +729,11 @@ struct supertype {
};
extern struct supertype *super_by_fd(int fd);
extern struct supertype *guess_super(int fd);
enum guess_types { guess_any, guess_array, guess_partitions };
extern struct supertype *guess_super_type(int fd, enum guess_types guess_type);
static inline struct supertype *guess_super(int fd) {
return guess_super_type(fd, guess_any);
}
extern struct supertype *dup_super(struct supertype *st);
extern int get_dev_size(int fd, char *dname, unsigned long long *sizep);
extern void get_one_disk(int mdfd, mdu_array_info_t *ainf,

6
util.c
View File

@ -1087,7 +1087,7 @@ struct supertype *dup_super(struct supertype *orig)
return st;
}
struct supertype *guess_super(int fd)
struct supertype *guess_super_type(int fd, enum guess_types guess_type)
{
/* try each load_super to find the best match,
* and return the best superswitch
@ -1102,6 +1102,10 @@ struct supertype *guess_super(int fd)
for (i=0 ; superlist[i]; i++) {
int rv;
ss = superlist[i];
if (guess_type == guess_array && ss->add_to_super == NULL)
continue;
if (guess_type == guess_partitions && ss->add_to_super != NULL)
continue;
memset(st, 0, sizeof(*st));
rv = ss->load_super(st, fd, NULL);
if (rv == 0) {