mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-09-04 20:19:47 +08:00
e6d3e653b0
d_shortname of struct dentry only reserves D_NAME_INLINE_LEN characters
and contains garbage for longer names. Use d_name instead, which always
references the valid name.
Link: https://lore.kernel.org/all/20250525213709.878287-2-illia@yshyn.com/
Link: https://lkml.kernel.org/r/20250629003811.2420418-1-illia@yshyn.com
Fixes: 79300ac805 ("scripts/gdb: fix dentry_name() lookup")
Signed-off-by: Illia Ostapyshyn <illia@yshyn.com>
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jan Kara <jack@suse.cz>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Kieran Bingham <kbingham@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
60 lines
1.4 KiB
Python
60 lines
1.4 KiB
Python
#
|
|
# gdb helper commands and functions for Linux kernel debugging
|
|
#
|
|
# VFS tools
|
|
#
|
|
# Copyright (c) 2023 Glenn Washburn
|
|
# Copyright (c) 2016 Linaro Ltd
|
|
#
|
|
# Authors:
|
|
# Glenn Washburn <development@efficientek.com>
|
|
# Kieran Bingham <kieran.bingham@linaro.org>
|
|
#
|
|
# This work is licensed under the terms of the GNU GPL version 2.
|
|
#
|
|
|
|
import gdb
|
|
from linux import utils
|
|
|
|
|
|
def dentry_name(d):
|
|
parent = d['d_parent']
|
|
if parent == d or parent == 0:
|
|
return ""
|
|
p = dentry_name(d['d_parent']) + "/"
|
|
return p + d['d_name']['name'].string()
|
|
|
|
class DentryName(gdb.Function):
|
|
"""Return string of the full path of a dentry.
|
|
|
|
$lx_dentry_name(PTR): Given PTR to a dentry struct, return a string
|
|
of the full path of the dentry."""
|
|
|
|
def __init__(self):
|
|
super(DentryName, self).__init__("lx_dentry_name")
|
|
|
|
def invoke(self, dentry_ptr):
|
|
return dentry_name(dentry_ptr)
|
|
|
|
DentryName()
|
|
|
|
|
|
dentry_type = utils.CachedType("struct dentry")
|
|
|
|
class InodeDentry(gdb.Function):
|
|
"""Return dentry pointer for inode.
|
|
|
|
$lx_i_dentry(PTR): Given PTR to an inode struct, return a pointer to
|
|
the associated dentry struct, if there is one."""
|
|
|
|
def __init__(self):
|
|
super(InodeDentry, self).__init__("lx_i_dentry")
|
|
|
|
def invoke(self, inode_ptr):
|
|
d_u = inode_ptr["i_dentry"]["first"]
|
|
if d_u == 0:
|
|
return ""
|
|
return utils.container_of(d_u, dentry_type.get_type().pointer(), "d_u")
|
|
|
|
InodeDentry()
|