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Allow metadata handlers to free their own superblock. 

As the metadata handler allocates the superblock, it should free it
too.  DDF will have a more complex 'superblock' which needs more complex
freeing.
This commit is contained in:
Neil Brown 2007-12-14 20:14:00 +11:00
parent 2faf1f5f63
commit df37ffc039
11 changed files with 64 additions and 54 deletions
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62
Assemble.c
View File

@ -226,11 +226,6 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
continue;
}
if (super) {
free(super);
super = NULL;
}
dfd = dev_open(devname, O_RDONLY|O_EXCL);
if (dfd < 0) {
if ((inargv && verbose >= 0) || verbose > 0)
@ -265,35 +260,35 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
if ((inargv && verbose >= 0) || verbose > 0)
fprintf(stderr, Name ": %s has wrong uuid.\n",
devname);
continue;
goto loop;
}
if (ident->name[0] && (!update || strcmp(update, "name")!= 0) &&
(!super || name_matches(info.name, ident->name, homehost)==0)) {
if ((inargv && verbose >= 0) || verbose > 0)
fprintf(stderr, Name ": %s has wrong name.\n",
devname);
continue;
goto loop;
}
if (ident->super_minor != UnSet &&
(!super || ident->super_minor != info.array.md_minor)) {
if ((inargv && verbose >= 0) || verbose > 0)
fprintf(stderr, Name ": %s has wrong super-minor.\n",
devname);
continue;
goto loop;
}
if (ident->level != UnSet &&
(!super|| ident->level != info.array.level)) {
if ((inargv && verbose >= 0) || verbose > 0)
fprintf(stderr, Name ": %s has wrong raid level.\n",
devname);
continue;
goto loop;
}
if (ident->raid_disks != UnSet &&
(!super || ident->raid_disks!= info.array.raid_disks)) {
if ((inargv && verbose >= 0) || verbose > 0)
fprintf(stderr, Name ": %s requires wrong number of drives.\n",
devname);
continue;
goto loop;
}
if (mdfd < 0) {
if (tst == NULL || super == NULL)
@ -306,7 +301,7 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
/* Auto-assemble, and this is not a usable host */
/* if update != NULL, we are updating the host
* name... */
continue;
goto loop;
}
}
/* If we are this far, then we are nearly commited to this device.
@ -319,7 +314,7 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
if (!super) {
fprintf(stderr, Name ": %s has no superblock - assembly aborted\n",
devname);
free(first_super);
st->ss->free_super(first_super);
return 1;
}
@ -334,7 +329,7 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
* for now.
*/
if (mdfd < 0)
continue;
goto loop;
if (homehost) {
int first = st->ss->match_home(first_super, homehost);
int last = tst->ss->match_home(super, homehost);
@ -344,7 +339,7 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
if ((inargv && verbose >= 0) || verbose > 0)
fprintf(stderr, Name ": %s misses out due to wrong homehost\n",
devname);
continue;
goto loop;
} else { /* reject all those sofar */
mddev_dev_t td;
if ((inargv && verbose >= 0) || verbose > 0)
@ -354,18 +349,23 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
if (td->used == 1)
td->used = 0;
tmpdev->used = 1;
continue;
goto loop;
}
}
}
fprintf(stderr, Name ": superblock on %s doesn't match others - assembly aborted\n",
devname);
free(super);
free(first_super);
tst->ss->free_super(super);
st->ss->free_super(first_super);
return 1;
}
tmpdev->used = 1;
loop:
if (super)
tst->ss->free_super(super);
super = NULL;
}
if (mdfd < 0) {
@ -388,7 +388,7 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
asprintf(&mddev, "/dev/md/%s", c);
mdfd = open_mddev(mddev, ident->autof);
if (mdfd < 0) {
free(first_super);
st->ss->free_super(first_super);
free(devices);
first_super = NULL;
goto try_again;
@ -405,7 +405,7 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
mddev, tmpdev->devname);
close(mdfd);
mdfd = -1;
free(first_super);
st->ss->free_super(first_super);
free(devices);
first_super = NULL;
goto try_again;
@ -442,11 +442,6 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
remove_partitions(dfd);
if (super) {
free(super);
super = NULL;
}
st->ss->load_super(st, dfd, &super, NULL);
st->ss->getinfo_super(&info, super);
@ -485,11 +480,6 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
remove_partitions(dfd);
if (super) {
free(super);
super = NULL;
}
st->ss->load_super(st, dfd, &super, NULL);
st->ss->getinfo_super(&info, super);
close(dfd);
@ -570,11 +560,11 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
best[i] = devcnt;
}
devcnt++;
}
if (super)
free(super);
super = NULL;
if (super)
st->ss->free_super(super);
super = NULL;
}
if (update && strcmp(update, "byteorder")==0)
st->minor_version = 90;
@ -582,7 +572,7 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
if (devcnt == 0) {
fprintf(stderr, Name ": no devices found for %s\n",
mddev);
free(first_super);
st->ss->free_super(first_super);
if (must_close) close(mdfd);
return 1;
}
@ -674,7 +664,7 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
fprintf(stderr, Name ": Could not re-write superblock on %s\n",
devices[chosen_drive].devname);
devices[chosen_drive].events = 0;
free(super);
st->ss->free_super(super);
continue;
}
close(fd);
@ -682,7 +672,7 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
devices[chosen_drive].uptodate = 1;
avail[chosen_drive] = 1;
okcnt++;
free(super);
st->ss->free_super(super);
/* If there are any other drives of the same vintage,
* add them in as well. We can't lose and we might gain

4
Create.c
View File

@ -553,7 +553,7 @@ int Create(struct supertype *st, char *mddev, int mdfd,
if (ioctl(mdfd, ADD_NEW_DISK, &disk)) {
fprintf(stderr, Name ": ADD_NEW_DISK for %s failed: %s\n",
dv->devname, strerror(errno));
free(super);
st->ss->free_super(super);
return 1;
}
@ -562,7 +562,7 @@ int Create(struct supertype *st, char *mddev, int mdfd,
if (dv == moved_disk && dnum != insert_point) break;
}
}
free(super);
st->ss->free_super(super);
/* param is not actually used */
if (runstop == 1 || subdevs >= raiddisks) {

4
Detail.c
View File

@ -119,7 +119,7 @@ int Detail(char *dev, int brief, int export, int test, char *homehost)
st->ss->getinfo_super(&info, super);
if (info.array.ctime != array.ctime ||
info.array.level != array.level) {
free(super);
st->ss->free_super(super);
super = NULL;
}
}
@ -378,6 +378,8 @@ This is pretty boring
if (spares && brief) printf(" spares=%d", spares);
if (super && brief && st)
st->ss->brief_detail_super(super);
if (super)
st->ss->free_super(super);
if (brief > 1 && devices) printf("\n devices=%s", devices);
if (brief) printf("\n");

6
Examine.c
View File

@ -119,7 +119,7 @@ int Examine(mddev_dev_t devlist, int brief, int scan,
st->ss->getinfo_super(&ap->info, super);
} else {
st->ss->getinfo_super(&ap->info, super);
free(super);
st->ss->free_super(super);
}
if (!(ap->info.disk.state & MD_DISK_SYNC))
ap->spares++;
@ -128,7 +128,7 @@ int Examine(mddev_dev_t devlist, int brief, int scan,
} else {
printf("%s:\n",devlist->devname);
st->ss->examine_super(super, homehost);
free(super);
st->ss->free_super(super);
}
}
if (brief) {
@ -145,7 +145,7 @@ int Examine(mddev_dev_t devlist, int brief, int scan,
sep=',';
}
}
free(ap->super);
ap->st->ss->free_super(ap->super);
/* FIXME free ap */
if (ap->spares || brief > 1)
printf("\n");

11
Grow.c
View File

@ -103,7 +103,8 @@ int Grow_Add_device(char *devname, int fd, char *newdev)
fprintf(stderr, Name ": cannot open device file %s\n", dv);
return 1;
}
if (super) free(super);
if (super)
st->ss->free_super(super);
super= NULL;
if (st->ss->load_super(st, fd2, &super, NULL)) {
fprintf(stderr, Name ": cannot find super block on %s\n", dv);
@ -906,7 +907,8 @@ int Grow_restart(struct supertype *st, struct mdinfo *info, int *fdlist, int cnt
continue;
st->ss->getinfo_super(&dinfo, super);
free(super); super = NULL;
st->ss->free_super(super);
super = NULL;
if (lseek64(fd,
(dinfo.data_offset + dinfo.component_size - 8) <<9,
0) < 0)
@ -948,7 +950,8 @@ int Grow_restart(struct supertype *st, struct mdinfo *info, int *fdlist, int cnt
/* FIXME should be this be an error */
continue;
st->ss->getinfo_super(&dinfo, super);
free(super); super = NULL;
st->ss->free_super(super);
super = NULL;
offsets[j] = dinfo.data_offset;
}
printf(Name ": restoring critical section\n");
@ -974,7 +977,7 @@ int Grow_restart(struct supertype *st, struct mdinfo *info, int *fdlist, int cnt
dinfo.reshape_progress = __le64_to_cpu(bsb.length);
st->ss->update_super(&dinfo, super, "_reshape_progress",NULL,0, 0, NULL);
st->ss->store_super(st, fdlist[j], super);
free(super);
st->ss->free_super(super);
}
/* And we are done! */

12
Incremental.c
View File

@ -502,7 +502,7 @@ static void find_reject(int mdfd, struct supertype *st, struct sysarray *sra,
continue;
}
st->ss->getinfo_super(&info, super);
free(super);
st->ss->free_super(super);
close(dfd);
if (info.disk.number != number ||
@ -574,24 +574,24 @@ static int count_active(struct supertype *st, int mdfd, char **availp,
if (avail[i])
avail[i]--;
avail[info.disk.raid_disk] = 2;
free(best_super);
st->ss->free_super(best_super);
best_super = super;
super = NULL;
} else { /* info.events much bigger */
cnt = 1; cnt1 = 0;
memset(avail, 0, info.disk.raid_disk);
max_events = info.events;
free(best_super);
st->ss->free_super(best_super);
best_super = super;
super = NULL;
}
}
if (super)
free(super);
st->ss->free_super(super);
}
if (best_super) {
st->ss->getinfo_super(bestinfo,best_super);
free(best_super);
st->ss->free_super(best_super);
}
return cnt + cnt1;
}
@ -636,7 +636,7 @@ void RebuildMap(void)
map_add(&map, md->devnum, st->ss->major,
st->minor_version,
info.uuid, path ? : "/unknown");
free(super);
st->ss->free_super(super);
break;
}
}

2
Kill.c
View File

@ -66,7 +66,7 @@ int Kill(char *dev, int force, int quiet)
if (rv== 0 || (force && rv >= 2)) {
mdu_array_info_t info;
info.major_version = -1; /* zero superblock */
free(super);
st->ss->free_super(super);
st->ss->init_super(st, &super, &info, 0, "", NULL, NULL);
if (st->ss->store_super(st, fd, super)) {
if (!quiet)

1
mdadm.h
View File

@ -365,6 +365,7 @@ extern struct superswitch {
unsigned long long size, int may_change, int major);
void (*locate_bitmap)(struct supertype *st, int fd, void *sbv);
int (*write_bitmap)(struct supertype *st, int fd, void *sbv);
void (*free_super)(void *super);
int major;
int swapuuid; /* true if uuid is bigending rather than hostendian */
} super0, super1, *superlist[];

7
super0.c
View File

@ -953,6 +953,12 @@ int write_bitmap0(struct supertype *st, int fd, void *sbv)
return rv;
}
static void free_super0(void *super)
{
if (super)
free(super);
}
struct superswitch super0 = {
#ifndef MDASSEMBLE
.examine_super = examine_super0,
@ -976,6 +982,7 @@ struct superswitch super0 = {
.add_internal_bitmap = add_internal_bitmap0,
.locate_bitmap = locate_bitmap0,
.write_bitmap = write_bitmap0,
.free_super = free_super0,
.major = 0,
.swapuuid = 0,
};

7
super1.c
View File

@ -1366,6 +1366,12 @@ static int write_bitmap1(struct supertype *st, int fd, void *sbv)
return rv;
}
static void free_super1(void *super)
{
if (super)
free(super);
}
struct superswitch super1 = {
#ifndef MDASSEMBLE
.examine_super = examine_super1,
@ -1389,6 +1395,7 @@ struct superswitch super1 = {
.add_internal_bitmap = add_internal_bitmap1,
.locate_bitmap = locate_bitmap1,
.write_bitmap = write_bitmap1,
.free_super = free_super1,
.major = 1,
#if __BYTE_ORDER == BIG_ENDIAN
.swapuuid = 0,

2
util.c
View File

@ -334,7 +334,7 @@ int check_raid(int fd, char *name)
fprintf(stderr, Name ": %s appears to be part of a raid array:\n",
name);
st->ss->getinfo_super(&info, super);
free(super);
st->ss->free_super(super);
crtime = info.array.ctime;
level = map_num(pers, info.array.level);
if (!level) level = "-unknown-";