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authorGlenn Washburn <development@efficientek.com>2023-03-01 01:53:35 +0100
committerAndrew Morton <akpm@linux-foundation.org>2023-04-19 01:39:35 +0200
commit5a10562bdeb58006de4b1cd5f671b7da26b20bb3 (patch)
tree45e4ad85130c71d59d56bc1af447bdf364252f74 /scripts/gdb
parentscripts/gdb: create linux/vfs.py for VFS related GDB helpers (diff)
downloadlinux-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 $lx_i_dentry() returns the dentry pointer associated with the given inode pointer, if there is one. Link: https://lkml.kernel.org/r/c9a5ad8efbfbd2cc6559e082734eed7628f43a16.1677631565.git.development@efficientek.com Signed-off-by: Glenn Washburn <development@efficientek.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Antonio Borneo <antonio.borneo@foss.st.com> Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: John Ogness <john.ogness@linutronix.de> Cc: Kieran Bingham <kbingham@kernel.org> Cc: Petr Mladek <pmladek@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'scripts/gdb')
-rw-r--r--scripts/gdb/linux/vfs.py37
1 files changed, 37 insertions, 0 deletions
diff --git a/scripts/gdb/linux/vfs.py b/scripts/gdb/linux/vfs.py
index 62d4f9ad7d79..c77b9ce75f6d 100644
--- a/scripts/gdb/linux/vfs.py
+++ b/scripts/gdb/linux/vfs.py
@@ -13,6 +13,9 @@
# This work is licensed under the terms of the GNU GPL version 2.
#
+import gdb
+from linux import utils
+
def dentry_name(d):
parent = d['d_parent']
@@ -20,3 +23,37 @@ def dentry_name(d):
return ""
p = dentry_name(d['d_parent']) + "/"
return p + d['d_iname'].string()
+
+class DentryName(gdb.Function):
+ """Return string of the full path of a dentry.
+
+$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()