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commit 136b7065b70f0a5e0a47d5f31f1d798148f84ae1
Author: zhengyu9 <zheng...@xiaomi.com>
AuthorDate: Wed Aug 14 10:36:34 2024 +0800
gdb tools: print inode info
go through each inode and print its structure info
in the form like below:
├── i_name: bin, i_ino: 51
│ i_parent: , i_peer: data, i_child: , i_crefs: 1, i_flags: 3
│ ......(other info)
│ ├── i_name: audio, i_ino: 5
│ │ i_parent: dev, i_peer: binder, i_child: mixer......
Signed-off-by: zhengyu9 <zheng...@xiaomi.com>
---
tools/gdb/fs.py | 111 +++++++++++++++++++++++++++++++++++++++++++++++++++++
tools/gdb/lists.py | 8 ++--
2 files changed, 115 insertions(+), 4 deletions(-)
diff --git a/tools/gdb/fs.py b/tools/gdb/fs.py
index 9475a9b9e9..2a39a16f23 100644
--- a/tools/gdb/fs.py
+++ b/tools/gdb/fs.py
@@ -18,14 +18,21 @@
#
############################################################################
+import argparse
+
import gdb
import utils
FSNODEFLAG_TYPE_MASK = utils.get_symbol_value("FSNODEFLAG_TYPE_MASK")
FSNODEFLAG_TYPE_MOUNTPT = utils.get_symbol_value("FSNODEFLAG_TYPE_MOUNTPT")
+CONFIG_PSEUDOFS_FILE = utils.get_symbol_value("CONFIG_PSEUDOFS_FILE")
+CONFIG_PSEUDOFS_ATTRIBUTES =
utils.get_symbol_value("CONFIG_PSEUDOFS_ATTRIBUTES")
+
def get_inode_name(inode):
+ if not inode:
+ return ""
ptr = inode["i_name"].cast(gdb.lookup_type("char").pointer())
return ptr.string()
@@ -55,5 +62,109 @@ class Mount(gdb.Command):
foreach_inode(self.mountpt_filter)
+class ForeachInode(gdb.Command):
+ """Dump each inode info"""
+
+ def __init__(self):
+ super(ForeachInode, self).__init__("foreach_inode", gdb.COMMAND_USER)
+ self.level = 4096
+
+ def get_root_inode(self, addr_or_expr):
+ try:
+ return gdb.Value(int(addr_or_expr, 0)).cast(
+ gdb.lookup_type("struct inode").pointer()
+ )
+ except ValueError:
+ return utils.gdb_eval_or_none(addr_or_expr)
+
+ def parse_arguments(self, argv):
+ parser = argparse.ArgumentParser(description="foreach_inode command")
+ parser.add_argument(
+ "-L",
+ "--level",
+ type=int,
+ default=None,
+ help="Only render the tree to a specific depth",
+ )
+ parser.add_argument(
+ "addr_or_expr",
+ type=str,
+ nargs="?",
+ default=None,
+ help="set the start inode to be tranversed",
+ )
+ try:
+ args = parser.parse_args(argv)
+ except SystemExit:
+ return None
+ return {
+ "level": args.level if args.level else 4096,
+ "root_inode": (
+ self.get_root_inode(args.addr_or_expr)
+ if args.addr_or_expr
+ else utils.gdb_eval_or_none("g_root_inode")
+ ),
+ }
+
+ def print_inode_info(self, node, level, prefix):
+ if level > self.level:
+ return
+ while node:
+ if node["i_peer"]:
+ initial_indent = prefix + "├── "
+ subsequent_indent = prefix + "│ "
+ newprefix = prefix + "│ "
+ else:
+ initial_indent = prefix + "└── "
+ subsequent_indent = prefix + " "
+ newprefix = prefix + " "
+ gdb.write(
+ "%s [%s], %s, %s\n"
+ % (initial_indent, get_inode_name(node), node["i_ino"], node)
+ )
+ gdb.write(
+ "%s i_crefs: %s, i_flags: %s, i_private: %s\n"
+ % (
+ subsequent_indent,
+ node["i_crefs"],
+ node["i_flags"],
+ node["i_private"],
+ )
+ )
+ if CONFIG_PSEUDOFS_FILE:
+ gdb.write("%s i_size: %s\n" % (subsequent_indent,
node["i_size"]))
+ if CONFIG_PSEUDOFS_ATTRIBUTES:
+ gdb.write(
+ "%s i_mode: %s, i_owner: %s, i_group: %s\n"
+ % (
+ subsequent_indent,
+ node["i_mode"],
+ node["i_owner"],
+ node["i_group"],
+ )
+ )
+ gdb.write(
+ "%s i_atime: %s, i_mtime: %s, i_ctime: %s\n"
+ % (
+ subsequent_indent,
+ node["i_atime"],
+ node["i_mtime"],
+ node["i_ctime"],
+ )
+ )
+ if node["i_child"]:
+ self.print_inode_info(node["i_child"], level + 1, newprefix)
+ node = node["i_peer"]
+
+ def invoke(self, args, from_tty):
+ arg = self.parse_arguments(args.split(" "))
+ if not arg:
+ return
+ self.level = arg["level"]
+ self.print_inode_info(arg["root_inode"], 1, "")
+
+
if not utils.get_symbol_value("CONFIG_DISABLE_MOUNTPOINT"):
Mount()
+
+ForeachInode()
diff --git a/tools/gdb/lists.py b/tools/gdb/lists.py
index 8e6674681f..e3384ced0d 100644
--- a/tools/gdb/lists.py
+++ b/tools/gdb/lists.py
@@ -240,12 +240,12 @@ class ListCheck(gdb.Command):
raise gdb.GdbError("Invalid argument type: {}".format(obj.type))
-class ListForEveryEntry(gdb.Command):
+class ForeachListEntry(gdb.Command):
"""Dump list members for a given list"""
def __init__(self):
- super(ListForEveryEntry, self).__init__(
- "list_for_every_entry", gdb.COMMAND_DATA, gdb.COMPLETE_EXPRESSION
+ super(ForeachListEntry, self).__init__(
+ "foreach_list_entry", gdb.COMMAND_DATA, gdb.COMPLETE_EXPRESSION
)
def invoke(self, arg, from_tty):
@@ -268,4 +268,4 @@ class ListForEveryEntry(gdb.Command):
ListCheck()
-ListForEveryEntry()
+ForeachListEntry()
