diff options
author | Glenn Washburn <development@efficientek.com> | 2023-03-01 01:53:35 +0100 |
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committer | Andrew Morton <akpm@linux-foundation.org> | 2023-04-19 01:39:35 +0200 |
commit | 5a10562bdeb58006de4b1cd5f671b7da26b20bb3 (patch) | |
tree | 45e4ad85130c71d59d56bc1af447bdf364252f74 /scripts/gdb | |
parent | scripts/gdb: create linux/vfs.py for VFS related GDB helpers (diff) | |
download | linux-5a10562bdeb58006de4b1cd5f671b7da26b20bb3.tar.xz linux-5a10562bdeb58006de4b1cd5f671b7da26b20bb3.zip |
scripts/gdb: add GDB convenience functions $lx_dentry_name() and $lx_i_dentry()
$lx_dentry_name() generates a full VFS path from a given dentry pointer,
and $lx_i_dentry() returns the dentry pointer associated with the given
inode pointer, if there is one.
Link: https://lkml.kernel.org/r/c9a5ad8efbfbd2cc6559e082734eed7628f43a16.1677631565.git.development@efficientek.com
Signed-off-by: Glenn Washburn <development@efficientek.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Antonio Borneo <antonio.borneo@foss.st.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: John Ogness <john.ogness@linutronix.de>
Cc: Kieran Bingham <kbingham@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'scripts/gdb')
-rw-r--r-- | scripts/gdb/linux/vfs.py | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/scripts/gdb/linux/vfs.py b/scripts/gdb/linux/vfs.py index 62d4f9ad7d79..c77b9ce75f6d 100644 --- a/scripts/gdb/linux/vfs.py +++ b/scripts/gdb/linux/vfs.py @@ -13,6 +13,9 @@ # This work is licensed under the terms of the GNU GPL version 2. # +import gdb +from linux import utils + def dentry_name(d): parent = d['d_parent'] @@ -20,3 +23,37 @@ def dentry_name(d): return "" p = dentry_name(d['d_parent']) + "/" return p + d['d_iname'].string() + +class DentryName(gdb.Function): + """Return string of the full path of a dentry. + +$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() |