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msnfs41client: Patches for rejecting install if service is running, DFS "\IPC$" pipe+misc, 2025-08-14
Posted by Anonymous on Thu 14th Aug 2025 16:08
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From d69478f43ad6119a654aa0ef3c1850adb1d35179 Mon Sep 17 00:00:00 2001 From: Roland Mainz <roland.mainz@nrubsig.org> Date: Thu, 14 Aug 2025 11:00:43 +0200 Subject: [PATCH 1/3] cygwin: /sbin/msnfs41client install should not work while the ms-nfs41-client servcices are running /sbin/msnfs41client install should not work while the ms-nfs41-client servcices are running, and provide instructions what to do in this case. Reported-by: Lionel Cons <Lionelcons1972@gmail.com> Signed-off-by: Cedric Blancher <cedric.blancher@gmail.com> --- cygwin/devel/msnfs41client.bash | 44 +++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/cygwin/devel/msnfs41client.bash b/cygwin/devel/msnfs41client.bash index d00e59e..492921f 100755 --- a/cygwin/devel/msnfs41client.bash +++ b/cygwin/devel/msnfs41client.bash @@ -117,6 +117,40 @@ function check_machine_arch # not reached } +function is_service_stopped +{ + typeset service_name="$1" + typeset -i res + typeset stdout + + stdout="$( sc query "$service_name" )" ; (( res=$? )) + + if (( res != 0 )) ; then + printf "%s: sc failed, msg=%q\n" "$0" "$stdout" 1>&2 + return 1 + fi + + if [[ "$stdout" == *STOPPED* ]] ; then + return 0 + fi + + return 1 +} + +function is_service_installed +{ + typeset service_name="$1" + typeset -i res + + sc getdisplayname "$service_name" >'/dev/null' 2>&1 ; (( res=$? )) + + if (( res == 0 )) ; then + return 0 + fi + + return 1 +} + function nfsclient_install { set -o nounset @@ -127,6 +161,16 @@ function nfsclient_install typeset use_secureboot=false + if is_service_installed 'ms-nfs41-client-service' ; then + if ! is_service_stopped 'ms-nfs41-client-service' ; then + set -o xtrace # make message below more readable + printf 'ms-nfs41-client-service is still running.\n' + printf 'Please disable the service via $ /sbin/msnfs41client disableautostartservices #,\n' + printf 'reboot and then install the new version of ms-nfs41-client via $ /sbin/msnfs41client install #\n' + return 1 + fi + fi + # switch to the location where this script is installed, # because on Cygwin the script will be installed # in /cygdrive/c/cygwin/lib/msnfs41client/ (32bit) or -- 2.45.1 From 469bc289f0881bc003d8c36c870deb5eb1d916d3 Mon Sep 17 00:00:00 2001 From: Roland Mainz <roland.mainz@nrubsig.org> Date: Thu, 14 Aug 2025 11:03:13 +0200 Subject: [PATCH 2/3] cygwin: Replace ksh93-specific print(1) usage with printf(1) Replace ksh93-specific print(1) ($ print -u2 ... #) usage with printf(1) ($ printf ... 1>&2 #). Signed-off-by: Cedric Blancher <cedric.blancher@gmail.com> --- cygwin/devel/msnfs41client.bash | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/cygwin/devel/msnfs41client.bash b/cygwin/devel/msnfs41client.bash index 492921f..cc104a6 100755 --- a/cygwin/devel/msnfs41client.bash +++ b/cygwin/devel/msnfs41client.bash @@ -840,7 +840,7 @@ function nfsclient_system_mount_globaldirs set -o errexit if ! nfsclient_waitfor_clientdaemon ; then - print -u2 -f $"%s: nfsd*.exe not running.\n" "$0" + printf $"%s: nfsd*.exe not running.\n" "$0" 1>&2 return 1 fi @@ -862,7 +862,7 @@ function nfsclient_mount_homedir set -o errexit if ! nfsclient_waitfor_clientdaemon ; then - print -u2 -f $"%s: nfsd*.exe not running.\n" "$0" + printf $"%s: nfsd*.exe not running.\n" "$0" 1>&2 return 1 fi -- 2.45.1 From dc3805eb27c8f1859436cb51d074c0ee5c715a29 Mon Sep 17 00:00:00 2001 From: Roland Mainz <roland.mainz@nrubsig.org> Date: Thu, 14 Aug 2025 14:14:59 +0200 Subject: [PATCH 3/3] sys: Handle |MRxCreateVNetRoot()| \\IPC$ requests by DFS Handle |MRxCreateVNetRoot()| \\IPC$ requests which DFS uses to check whether this is a DFS path. We do not support DFS, so we return |STATUS_MORE_PROCESSING_REQUIRED|. Signed-off-by: Cedric Blancher <cedric.blancher@gmail.com> --- sys/nfs41sys_driver.c | 1 + sys/nfs41sys_driver.h | 1 + sys/nfs41sys_mount.c | 32 +++++++++++++++++++++++++++++++- 3 files changed, 33 insertions(+), 1 deletion(-) diff --git a/sys/nfs41sys_driver.c b/sys/nfs41sys_driver.c index c312ce2..4de1ab9 100644 --- a/sys/nfs41sys_driver.c +++ b/sys/nfs41sys_driver.c @@ -84,6 +84,7 @@ DECLARE_CONST_UNICODE_STRING(AUTHGSS_KRB5I_NAME, L"krb5i"); DECLARE_CONST_UNICODE_STRING(AUTHGSS_KRB5P_NAME, L"krb5p"); DECLARE_CONST_UNICODE_STRING(SLASH, L"\\"); DECLARE_CONST_UNICODE_STRING(EMPTY_STRING, L""); +DECLARE_CONST_UNICODE_STRING(NetRootIpc, L"\\IPC$"); DECLARE_CONST_ANSI_STRING(NfsV3Attributes, EA_NFSV3ATTRIBUTES); DECLARE_CONST_ANSI_STRING(NfsSymlinkTargetName, EA_NFSSYMLINKTARGETNAME); diff --git a/sys/nfs41sys_driver.h b/sys/nfs41sys_driver.h index 6c6db57..597d207 100644 --- a/sys/nfs41sys_driver.h +++ b/sys/nfs41sys_driver.h @@ -117,6 +117,7 @@ DECLARE_EXTERN_DECLARE_CONST_UNICODE_STRING(AUTHGSS_KRB5I_NAME); DECLARE_EXTERN_DECLARE_CONST_UNICODE_STRING(AUTHGSS_KRB5P_NAME); DECLARE_EXTERN_DECLARE_CONST_UNICODE_STRING(SLASH); DECLARE_EXTERN_DECLARE_CONST_UNICODE_STRING(EMPTY_STRING); +DECLARE_EXTERN_DECLARE_CONST_UNICODE_STRING(NetRootIpc); DECLARE_EXTERN_CONST_ANSI_STRING(NfsV3Attributes); DECLARE_EXTERN_CONST_ANSI_STRING(NfsSymlinkTargetName); diff --git a/sys/nfs41sys_mount.c b/sys/nfs41sys_mount.c index a1e7f61..069c682 100644 --- a/sys/nfs41sys_mount.c +++ b/sys/nfs41sys_mount.c @@ -845,13 +845,43 @@ NTSTATUS nfs41_CreateVNetRoot( #endif FsRtlEnterFileSystem(); - if (pNetRoot->Type != NET_ROOT_DISK && pNetRoot->Type != NET_ROOT_WILD) { + if ((pNetRoot->Type != NET_ROOT_DISK) && + (pNetRoot->Type != NET_ROOT_WILD) && + (pNetRoot->Type != NET_ROOT_PIPE)) { print_error("nfs41_CreateVNetRoot: Unsupported NetRoot Type %u\n", pNetRoot->Type); status = STATUS_NOT_SUPPORTED; goto out; } + if (pNetRoot->Type == NET_ROOT_PIPE) { + PUNICODE_STRING nrn = pNetRoot->pNetRootName; + + /* + * Check whether this is a CreateVNetRoot for a '\IPC$' pipe, and in + * that case return |STATUS_MORE_PROCESSING_REQUIRED| so DFS knows + * that this is not a DFS path + */ + if (nrn->Length >= + (pSrvCall->pSrvCallName->Length + NetRootIpc.Length)) { + if (memcmp(&nrn->Buffer[(nrn->Length/sizeof(wchar_t)) - + (NetRootIpc.Length/sizeof(wchar_t))], + NetRootIpc.Buffer, NetRootIpc.Length) == 0) { + DbgP("nfs41_CreateVNetRoot: " + "CreateVNetRoot for the \\IPC$ pipe!\n"); + status = STATUS_MORE_PROCESSING_REQUIRED; + goto out; + } + else { + DbgP("nfs41_CreateVNetRoot: " + "CreateVNetRoot not for the \\IPC$ pipe\n"); + } + } + + status = STATUS_NOT_SUPPORTED; + goto out; + } + pVNetRootContext->session = INVALID_HANDLE_VALUE; /* -- 2.45.1

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