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helpers: handle inodes with no aliases in inode_path()

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This commit is contained in:
Omar Sandoval 2019-05-02 08:09:48 -07:00
parent 7282c40a75
commit 8c229b794b
1 changed files with 7 additions and 1 deletions
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8
drgn/helpers/linux/fs.py
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@ -13,7 +13,11 @@ import os
from drgn import Program, container_of
from drgn.helpers import escape_string
from drgn.helpers.linux.list import hlist_for_each_entry, list_for_each_entry
from drgn.helpers.linux.list import (
hlist_empty,
hlist_for_each_entry,
list_for_each_entry,
)
__all__ = [
'd_path',
@ -94,6 +98,8 @@ def inode_path(inode):
Return any path of an inode from the root of its filesystem.
"""
if hlist_empty(inode.i_dentry):
return None
return dentry_path(container_of(inode.i_dentry.first, 'struct dentry',
'd_u.d_alias'))