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[PATCH] fs/partitions/check: add sysfs error handling

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Handle errors thrown in disk_sysfs_symlinks(), and propagate back to
caller.

The callers and associated functions don't do a real good job of handling
kobject errors anyway (add_partition, register_disk, rescan_partitions), so
this should do until something better comes along.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jeff Garzik 2006-10-17 00:10:23 -07:00 committed by Linus Torvalds
parent 6b5f29675c
commit eee44cca66
1 changed files with 42 additions and 8 deletions
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50
fs/partitions/check.c
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@ -376,18 +376,48 @@ static char *make_block_name(struct gendisk *disk)
return name;
}
static void disk_sysfs_symlinks(struct gendisk *disk)
static int disk_sysfs_symlinks(struct gendisk *disk)
{
struct device *target = get_device(disk->driverfs_dev);
int err;
char *disk_name = NULL;
if (target) {
char *disk_name = make_block_name(disk);
sysfs_create_link(&disk->kobj,&target->kobj,"device");
if (disk_name) {
sysfs_create_link(&target->kobj,&disk->kobj,disk_name);
kfree(disk_name);
disk_name = make_block_name(disk);
if (!disk_name) {
err = -ENOMEM;
goto err_out;
}
err = sysfs_create_link(&disk->kobj, &target->kobj, "device");
if (err)
goto err_out_disk_name;
err = sysfs_create_link(&target->kobj, &disk->kobj, disk_name);
if (err)
goto err_out_dev_link;
}
sysfs_create_link(&disk->kobj, &block_subsys.kset.kobj, "subsystem");
err = sysfs_create_link(&disk->kobj, &block_subsys.kset.kobj,
"subsystem");
if (err)
goto err_out_disk_name_lnk;
kfree(disk_name);
return 0;
err_out_disk_name_lnk:
if (target) {
sysfs_remove_link(&target->kobj, disk_name);
err_out_dev_link:
sysfs_remove_link(&disk->kobj, "device");
err_out_disk_name:
kfree(disk_name);
err_out:
put_device(target);
}
return err;
}
/* Not exported, helper to add_disk(). */
@ -406,7 +436,11 @@ void register_disk(struct gendisk *disk)
*s = '!';
if ((err = kobject_add(&disk->kobj)))
return;
disk_sysfs_symlinks(disk);
err = disk_sysfs_symlinks(disk);
if (err) {
kobject_del(&disk->kobj);
return;
}
disk_sysfs_add_subdirs(disk);
/* No minors to use for partitions */