forked from nuttx/nuttx-update
tools/gdb/fs.py: add print fdinfo,modify the print format
Execute fdinfo or fdinfo -p pid.
(gdb) fdinfo
PID: 0
FD OFLAGS POS PATH BACKTRACE
0 3 0 /dev/console 0x4028ff0c <sched_backtrace+48> /home/neo/projects/vela2/nuttx/sched/sched/sched_backtrace.c:105
0x402888f8 <file_allocate_from_tcb+236> /home/neo/projects/vela2/nuttx/fs/inode/fs_files.c:615
0x402979d0 <nx_vopen+104> /home/neo/projects/vela2/nuttx/fs/vfs/fs_open.c:326
0x40297ad4 <nx_open+116> /home/neo/projects/vela2/nuttx/fs/vfs/fs_open.c:449
0x40291eb4 <group_setupidlefiles+28> /home/neo/projects/vela2/nuttx/sched/group/group_setupidlefiles.c:75
0x4028df94 <nx_start+628> /home/neo/projects/vela2/nuttx/sched/init/nx_start.c:651
0x4028119c <arm64_boot_primary_c_routine+16> /home/neo/projects/vela2/nuttx/arch/arm64/src/common/arm64_boot.c:205
1 3 0 /dev/console 0x4028ff0c <sched_backtrace+48> /home/neo/projects/vela2/nuttx/sched/sched/sched_backtrace.c:105
0x40289574 <file_dup3+248> /home/neo/projects/vela2/nuttx/fs/vfs/fs_dup2.c:177
0x40288b88 <nx_dup3_from_tcb+176> /home/neo/projects/vela2/nuttx/fs/inode/fs_files.c:314
0x40288c64 <nx_dup2_from_tcb+16> /home/neo/projects/vela2/nuttx/fs/inode/fs_files.c:901
0x40288c88 <nx_dup2+28> /home/neo/projects/vela2/nuttx/fs/inode/fs_files.c:924
0x40291ec4 <group_setupidlefiles+44> /home/neo/projects/vela2/nuttx/sched/group/group_setupidlefiles.c:84
0x4028df94 <nx_start+628> /home/neo/projects/vela2/nuttx/sched/init/nx_start.c:651
0x4028119c <arm64_boot_primary_c_routine+16> /home/neo/projects/vela2/nuttx/arch/arm64/src/common/arm64_boot.c:205
2 3 0 /dev/console 0x4028ff0c <sched_backtrace+48> /home/neo/projects/vela2/nuttx/sched/sched/sched_backtrace.c:105
0x40289574 <file_dup3+248> /home/neo/projects/vela2/nuttx/fs/vfs/fs_dup2.c:177
0x40288b88 <nx_dup3_from_tcb+176> /home/neo/projects/vela2/nuttx/fs/inode/fs_files.c:314
0x40288c64 <nx_dup2_from_tcb+16> /home/neo/projects/vela2/nuttx/fs/inode/fs_files.c:901
0x40288c88 <nx_dup2+28> /home/neo/projects/vela2/nuttx/fs/inode/fs_files.c:924
0x40291ed0 <group_setupidlefiles+56> /home/neo/projects/vela2/nuttx/sched/group/group_setupidlefiles.c:117
0x4028df94 <nx_start+628> /home/neo/projects/vela2/nuttx/sched/init/nx_start.c:651
0x4028119c <arm64_boot_primary_c_routine+16> /home/neo/projects/vela2/nuttx/arch/arm64/src/common/arm64_boot.c:205
Signed-off-by: yangao1 <yangao1@xiaomi.com>
This commit is contained in:
yangao1
Xiang Xiao
parent
136b7065b7
commit
ab3aa41f39
2 changed files with 150 additions and 0 deletions
133
tools/gdb/fs.py
133
tools/gdb/fs.py
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@ -29,6 +29,11 @@ FSNODEFLAG_TYPE_MOUNTPT = utils.get_symbol_value("FSNODEFLAG_TYPE_MOUNTPT")
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CONFIG_PSEUDOFS_FILE = utils.get_symbol_value("CONFIG_PSEUDOFS_FILE")
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CONFIG_PSEUDOFS_ATTRIBUTES = utils.get_symbol_value("CONFIG_PSEUDOFS_ATTRIBUTES")
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CONFIG_FS_BACKTRACE = utils.get_symbol_value("CONFIG_FS_BACKTRACE")
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CONFIG_NFILE_DESCRIPTORS_PER_BLOCK = int(
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utils.get_symbol_value("CONFIG_NFILE_DESCRIPTORS_PER_BLOCK")
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)
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def get_inode_name(inode):
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if not inode:
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@ -37,6 +42,34 @@ def get_inode_name(inode):
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return ptr.string()
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def inode_getpath(inode):
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"""get path fron inode"""
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if not inode:
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return ""
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name = get_inode_name(inode)
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if inode["i_parent"]:
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return inode_getpath(inode["i_parent"]) + "/" + name
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return name
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def get_file(tcb, fd):
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group = tcb["group"]
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filelist = group["tg_filelist"]
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fl_files = filelist["fl_files"]
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fl_rows = filelist["fl_rows"]
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row = fd // CONFIG_NFILE_DESCRIPTORS_PER_BLOCK
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col = fd % CONFIG_NFILE_DESCRIPTORS_PER_BLOCK
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if row >= fl_rows:
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return None
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return fl_files[row][col]
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def foreach_inode(handler, root=None, path=""):
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node = root if root else gdb.parse_and_eval("g_root_inode")["i_child"]
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while node:
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@ -47,6 +80,104 @@ def foreach_inode(handler, root=None, path=""):
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node = node["i_peer"]
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def foreach_file(tcb):
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"""Iterate over all file descriptors in a tcb"""
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group = tcb["group"]
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filelist = group["tg_filelist"]
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fl_files = filelist["fl_files"]
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fl_rows = filelist["fl_rows"]
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for row in range(fl_rows):
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for col in range(CONFIG_NFILE_DESCRIPTORS_PER_BLOCK):
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file = fl_files[row][col]
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if not file or not file["f_inode"]:
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continue
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fd = row * CONFIG_NFILE_DESCRIPTORS_PER_BLOCK + col
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yield fd, file
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class Fdinfo(gdb.Command):
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"""Dump fd info information of process"""
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def __init__(self):
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super(Fdinfo, self).__init__(
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"fdinfo", gdb.COMMAND_DATA, gdb.COMPLETE_EXPRESSION
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)
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def print_file_info(self, fd, file, formatter):
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backtrace_formatter = "{0:<5} {1:<36} {2}"
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oflags = int(file["f_oflags"])
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pos = int(file["f_pos"])
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path = inode_getpath(file["f_inode"])
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output = []
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if CONFIG_FS_BACKTRACE:
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backtrace = utils.backtrace(
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[file["f_backtrace"][i] for i in range(CONFIG_FS_BACKTRACE)]
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)
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backtrace = [
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backtrace_formatter.format(
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hex(addr),
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func,
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source,
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)
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for addr, func, source in backtrace
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]
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output.append(formatter.format(fd, oflags, pos, path, backtrace[0]))
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output.extend(formatter.format("", "", "", "", bt) for bt in backtrace[1:])
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output.append("") # separate each backtrace
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else:
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output = [formatter.format(fd, oflags, pos, path, "")]
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gdb.write("\n".join(output))
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gdb.write("\n")
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def print_fdinfo_by_tcb(self, tcb):
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"""print fdlist from tcb"""
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gdb.write(f"PID: {tcb['pid']}\n")
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group = tcb["group"]
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if not group:
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return
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if group in self.processed_groups:
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return
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self.processed_groups.add(group)
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headers = ["FD", "OFLAGS", "POS", "PATH", "BACKTRACE"]
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formatter = "{:<4}{:<8}{:<6}{:<22}{:<50}"
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gdb.write(formatter.format(*headers) + "\n")
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for fd, file in foreach_file(tcb):
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self.print_file_info(fd, file, formatter)
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gdb.write("\n")
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def invoke(self, arg, from_tty):
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parser = argparse.ArgumentParser(
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description="Get fdinfo for a process or all processes."
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)
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parser.add_argument("-p", "--pid", type=int, help="Optional process ID")
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try:
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args = parser.parse_args(gdb.string_to_argv(arg))
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except SystemExit:
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gdb.write("Invalid arguments.\n")
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return
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self.processed_groups = set()
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tcbs = [utils.get_tcb(args.pid)] if args.pid else utils.get_tcbs()
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for tcb in tcbs:
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self.print_fdinfo_by_tcb(tcb)
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class Mount(gdb.Command):
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def __init__(self):
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super(Mount, self).__init__("mount", gdb.COMMAND_USER)
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@ -164,6 +295,8 @@ class ForeachInode(gdb.Command):
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self.print_inode_info(arg["root_inode"], 1, "")
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Fdinfo()
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if not utils.get_symbol_value("CONFIG_DISABLE_MOUNTPOINT"):
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Mount()
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@ -21,6 +21,7 @@
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############################################################################
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import re
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from typing import List
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import gdb
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@ -28,6 +29,22 @@ g_symbol_cache = {}
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g_type_cache = {}
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def backtrace(addresses: List[gdb.Value]) -> List[str]:
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"""Convert addresses to backtrace"""
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backtrace = []
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for addr in addresses:
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if not addr:
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break
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func = addr.format_string(symbols=True, address=False)
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sym = gdb.find_pc_line(int(addr))
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source = str(sym.symtab) + ":" + str(sym.line)
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backtrace.append((int(addr), func, source))
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return backtrace
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def lookup_type(name, block=None) -> gdb.Type:
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"""Return the type object of a type name"""
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global g_type_cache
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