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nilfs2: replace BUG_ON and BUG calls triggerable from ioctl

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Pekka Enberg advised me:
> It would be nice if BUG(), BUG_ON(), and panic() calls would be
> converted to proper error handling using WARN_ON() calls. The BUG()
> call in nilfs_cpfile_delete_checkpoints(), for example, looks to be
> triggerable from user-space via the ioctl() system call.

This will follow the comment and keep them to a minimum.

Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ryusuke Konishi
2009-04-06 19:01:55 -07:00
committed by Linus Torvalds
parent 2c2e52fc4f
commit 1f5abe7e7d
13 changed files with 144 additions and 160 deletions
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13
fs/nilfs2/direct.c
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@@ -210,7 +210,6 @@ static int nilfs_direct_last_key(const struct nilfs_bmap *bmap, __u64 *keyp)
if (lastkey == NILFS_DIRECT_KEY_MAX + 1)
return -ENOENT;
BUG_ON(keyp == NULL);
*keyp = lastkey;
return 0;
@@ -366,9 +365,17 @@ static int nilfs_direct_assign(struct nilfs_bmap *bmap,
direct = (struct nilfs_direct *)bmap;
key = nilfs_bmap_data_get_key(bmap, *bh);
BUG_ON(key > NILFS_DIRECT_KEY_MAX);
if (unlikely(key > NILFS_DIRECT_KEY_MAX)) {
printk(KERN_CRIT "%s: invalid key: %llu\n", __func__,
(unsigned long long)key);
return -EINVAL;
}
ptr = nilfs_direct_get_ptr(direct, key);
BUG_ON(ptr == NILFS_BMAP_INVALID_PTR);
if (unlikely(ptr == NILFS_BMAP_INVALID_PTR)) {
printk(KERN_CRIT "%s: invalid pointer: %llu\n", __func__,
(unsigned long long)ptr);
return -EINVAL;
}
return direct->d_ops->dop_assign(direct, key, ptr, bh,
blocknr, binfo);