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fsnotify: Remove fsnotify_duplicate_mark()

Forráskód böngészése 
There are only two calls sites of fsnotify_duplicate_mark(). Those are
in kernel/audit_tree.c and both are bogus. Vfsmount pointer is unused
for audit tree, inode pointer and group gets set in
fsnotify_add_mark_locked() later anyway, mask and free_mark are already
set in alloc_chunk(). In fact, calling fsnotify_duplicate_mark() is
actively harmful because following fsnotify_add_mark_locked() will leak
group reference by overwriting the group pointer. So just remove the two
calls to fsnotify_duplicate_mark() and the function.

Signed-off-by: Jan Kara <jack@suse.cz>
[PM: line wrapping to fit in 80 chars]
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Jan Kara
2016-12-22 10:15:20 +01:00
committed by Paul Moore
szülő 533c7b69c7
commit e3ba730702
3 fájl változott, egészen pontosan 4 új sor hozzáadva és 18 régi sor törölve
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12
fs/notify/mark.c
Fájl megtekintése

@@ -510,18 +510,6 @@ void fsnotify_detach_group_marks(struct fsnotify_group *group)
}
}
void fsnotify_duplicate_mark(struct fsnotify_mark *new, struct fsnotify_mark *old)
{
assert_spin_locked(&old->lock);
new->inode = old->inode;
new->mnt = old->mnt;
if (old->group)
fsnotify_get_group(old->group);
new->group = old->group;
new->mask = old->mask;
new->free_mark = old->free_mark;
}
/*
* Nothing fancy, just initialize lists and locks and counters.
*/