devel/msnfs41client.bash: Add WinDBG cdb support
Posted by Anonymous on Wed 11th Oct 2023 17:54
raw | new post

From b4f4ffa83a41687bd60752926969474f5e78d23e Mon Sep 17 00:00:00 2001
From: Roland Mainz <roland.mainz@nrubsig.org>
Date: Wed, 11 Oct 2023 15:13:28 +0200
Subject: [PATCH 1/2] devel/msnfs41client.bash: Add WinDBG cdb support

Add support for WinDBG's cdb to cygwin/devel/msnfs41client.bash, as
we currently only support compiling the code for Visual Studio (19),
and gdb does not support the Windows PDB debugging format (gdb dwarf
to PDB would be possible via https://github.com/rainers/cv2pdb).

Currently this means that the msnfs41client.bash subcommands
"run_daemon" and "sys_run_daemon" require the installation of
WinDBG, so that nfsd_debug.exe always runs under cdb control
(instead of gdb).

Signed-off-by: Cedric Blancher <cedric.blancher@gmail.com>
---
 cygwin/devel/msnfs41client.bash | 27 +++++++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

diff --git a/cygwin/devel/msnfs41client.bash b/cygwin/devel/msnfs41client.bash
index 7e3f26a..ad77034 100644
--- a/cygwin/devel/msnfs41client.bash
+++ b/cygwin/devel/msnfs41client.bash
@@ -99,7 +99,20 @@ function nfsclient_rundeamon
        set -o xtrace
        set -o nounset

-       gdb -ex=run --args nfsd_debug -d 0 --noldap --gid 1616 --uid 1616
+       #
+       # cdb cheat sheet:
+       #
+       # gdb: run  cdb: g
+       # gdb: bt   cdb: kp
+       # gdb: quit cdb: q
+       #
+
+       if false ; then
+               gdb -ex=run --args nfsd_debug -d 0 --noldap --gid 1616 --uid 1616
+       else
+               export _NT_ALT_SYMBOL_PATH="$(cygpath -w "$PWD")"
+               cdb -c "g" "$(cygpath -w "$PWD/nfsd_debug.exe")" -d 2 --noldap --gid 1616 --uid 1616
+       fi
        return $?
 }

@@ -108,7 +121,12 @@ function nfsclient_system_rundeamon
        set -o xtrace
        set -o nounset

-       su_system gdb -ex=run --args nfsd_debug -d 0 --noldap --gid 1616 --uid 1616
+       if false ; then
+               su_system gdb -ex=run --args nfsd_debug -d 0 --noldap --gid 1616 --uid 1616
+       else
+               export _NT_ALT_SYMBOL_PATH="$(cygpath -w "$PWD")"
+               su_system cdb -c "g" "$(cygpath -w "$PWD/nfsd_debug.exe")" -d 2 --noldap --gid 1616 --uid 1616
+       fi
        return $?
 }

@@ -213,6 +231,9 @@ function main
        # "$PATH:/usr/bin:/bin" is used for PsExec where $PATH might be empty
        export PATH="$PWD:$PATH:/usr/bin:/bin"

+       # path to WinDBG cdb (fixme: 64bit x86-specific)
+       PATH+=':/cygdrive/c/Program Files (x86)/Windows Kits/10/Debuggers/x64/'
+
        # my own path to pstools
        PATH+=':/home/roland_mainz/work/win_pstools/'

@@ -222,6 +243,7 @@ function main
                        return $?
                        ;;
                'run_deamon' | 'run_daemon')
+                       require_cmd 'cdb.exe' || return 1
                        require_cmd 'nfsd.exe' || return 1
                        require_cmd 'nfsd_debug.exe' || return 1
                        require_cmd 'nfs_mount.exe' || return 1
@@ -229,6 +251,7 @@ function main
                        return $?
                        ;;
                'sys_run_deamon' | 'sys_run_daemon')
+                       require_cmd 'cdb.exe' || return 1
                        require_cmd 'PsExec.exe' || return 1
                        require_cmd 'nfsd.exe' || return 1
                        require_cmd 'nfsd_debug.exe' || return 1
--
2.39.0