1 # 1 #
2 # gdb helper commands and functions for Linux 2 # gdb helper commands and functions for Linux kernel debugging
3 # 3 #
4 # VFS tools 4 # VFS tools
5 # 5 #
6 # Copyright (c) 2023 Glenn Washburn 6 # Copyright (c) 2023 Glenn Washburn
7 # Copyright (c) 2016 Linaro Ltd 7 # Copyright (c) 2016 Linaro Ltd
8 # 8 #
9 # Authors: 9 # Authors:
10 # Glenn Washburn <development@efficientek.com> 10 # Glenn Washburn <development@efficientek.com>
11 # Kieran Bingham <kieran.bingham@linaro.org> 11 # Kieran Bingham <kieran.bingham@linaro.org>
12 # 12 #
13 # This work is licensed under the terms of the 13 # This work is licensed under the terms of the GNU GPL version 2.
14 # 14 #
15 15
16 import gdb 16 import gdb
17 from linux import utils 17 from linux import utils
18 18
19 19
20 def dentry_name(d): 20 def dentry_name(d):
21 parent = d['d_parent'] 21 parent = d['d_parent']
22 if parent == d or parent == 0: 22 if parent == d or parent == 0:
23 return "" 23 return ""
24 p = dentry_name(d['d_parent']) + "/" 24 p = dentry_name(d['d_parent']) + "/"
25 return p + d['d_iname'].string() 25 return p + d['d_iname'].string()
26 26
27 class DentryName(gdb.Function): 27 class DentryName(gdb.Function):
28 """Return string of the full path of a den 28 """Return string of the full path of a dentry.
29 29
30 $lx_dentry_name(PTR): Given PTR to a dentry st 30 $lx_dentry_name(PTR): Given PTR to a dentry struct, return a string
31 of the full path of the dentry.""" 31 of the full path of the dentry."""
32 32
33 def __init__(self): 33 def __init__(self):
34 super(DentryName, self).__init__("lx_d 34 super(DentryName, self).__init__("lx_dentry_name")
35 35
36 def invoke(self, dentry_ptr): 36 def invoke(self, dentry_ptr):
37 return dentry_name(dentry_ptr) 37 return dentry_name(dentry_ptr)
38 38
39 DentryName() 39 DentryName()
40 40
41 41
42 dentry_type = utils.CachedType("struct dentry" 42 dentry_type = utils.CachedType("struct dentry")
43 43
44 class InodeDentry(gdb.Function): 44 class InodeDentry(gdb.Function):
45 """Return dentry pointer for inode. 45 """Return dentry pointer for inode.
46 46
47 $lx_i_dentry(PTR): Given PTR to an inode struc 47 $lx_i_dentry(PTR): Given PTR to an inode struct, return a pointer to
48 the associated dentry struct, if there is one. 48 the associated dentry struct, if there is one."""
49 49
50 def __init__(self): 50 def __init__(self):
51 super(InodeDentry, self).__init__("lx_ 51 super(InodeDentry, self).__init__("lx_i_dentry")
52 52
53 def invoke(self, inode_ptr): 53 def invoke(self, inode_ptr):
54 d_u = inode_ptr["i_dentry"]["first"] 54 d_u = inode_ptr["i_dentry"]["first"]
55 if d_u == 0: 55 if d_u == 0:
56 return "" 56 return ""
57 return utils.container_of(d_u, dentry_ 57 return utils.container_of(d_u, dentry_type.get_type().pointer(), "d_u")
58 58
59 InodeDentry() 59 InodeDentry()
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