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msnfs41client: SetupExeNotStarting, SysUserAPCLoop, WinSGRefix+misc, 2024-05-27
Posted by Anonymous on Mon 27th May 2024 16:13
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From feff77f103c9cf51ff08be404c3a49cd0ccf2659 Mon Sep 17 00:00:00 2001 From: Roland Mainz <roland.mainz@nrubsig.org> Date: Mon, 27 May 2024 11:31:29 +0200 Subject: [PATCH 1/4] cygwin,tests: Add newgrp(1)/sg(1)-style "winsg" util to switch primary group [refix] Add missing Makefile for "winsg" utility Signed-off-by: Cedric Blancher <cedric.blancher@gmail.com> --- tests/winsg/Makefile | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 tests/winsg/Makefile diff --git a/tests/winsg/Makefile b/tests/winsg/Makefile new file mode 100644 index 0000000..19f96db --- /dev/null +++ b/tests/winsg/Makefile @@ -0,0 +1,23 @@ +# +# Makefile for winsg +# + +# POSIX Makefile + +all: winsg.i686.exe winsg.x86_64.exe winsg.exe + +winsg.i686.exe: winsg.c + clang -target i686-pc-windows-gnu -Wall -DUNICODE=1 -D_UNICODE=1 -g winsg.c -o winsg.i686.exe + +winsg.x86_64.exe: winsg.c + clang -target x86_64-pc-windows-gnu -Wall -DUNICODE=1 -D_UNICODE=1 -g winsg.c -o winsg.x86_64.exe + +winsg.exe: winsg.x86_64.exe + ln -s winsg.x86_64.exe winsg.exe + +clean: + rm -fv \ + winsg.i686.exe \ + winsg.x86_64.exe \ + winsg.exe \ +# EOF. -- 2.43.0 From 4e8f4e6892691682d795f11d6e423dc9c7589cd0 Mon Sep 17 00:00:00 2001 From: Roland Mainz <roland.mainz@nrubsig.org> Date: Mon, 27 May 2024 15:31:46 +0200 Subject: [PATCH 2/4] sys,tests: Cannot run Cygwin setup.exe on NFSv4.1 share Fix the problem that Cygwin setup.exe could not start from a NFSv4.1 share. |SeCreateClientSecurityFromSubjectContext()| had |ServerIsRemote| set to |TRUE|, which caused "Activation Context" creation to fail in our driver code in |SeCreateClientSecurityFromSubjectContext()| with |STATUS_BAD_IMPERSONATION_LEVEL|, as Cygwin setup.exe does some impersonation stunts itself. The fix switches |ServerIsRemote=FALSE| + we add a testcase entry to tests/manual_testing.txt Reported-by: Martin Wege <martin.l.wege@gmail.com> Signed-off-by: Cedric Blancher <cedric.blancher@gmail.com> --- sys/nfs41_driver.c | 30 ++++++++++++++++++++++++++---- tests/manual_testing.txt | 8 ++++++++ 2 files changed, 34 insertions(+), 4 deletions(-) diff --git a/sys/nfs41_driver.c b/sys/nfs41_driver.c index 57dac0a..2f512c2 100644 --- a/sys/nfs41_driver.c +++ b/sys/nfs41_driver.c @@ -1545,8 +1545,15 @@ NTSTATUS nfs41_UpcallCreate( sec_qos.Length = sizeof(SECURITY_QUALITY_OF_SERVICE); sec_qos.EffectiveOnly = 0; entry->psec_ctx = &entry->sec_ctx; + /* + * Arg |ServerIsRemote| must be |FALSE|, otherwise processes + * like Cygwin setup-x86_64.exe can fail during "Activation + * Context" creation in + * |SeCreateClientSecurityFromSubjectContext()| with + * |STATUS_BAD_IMPERSONATION_LEVEL| + */ status = SeCreateClientSecurityFromSubjectContext(&sec_ctx, &sec_qos, - 1, entry->psec_ctx); + FALSE, entry->psec_ctx); if (status != STATUS_SUCCESS) { print_error("nfs41_UpcallCreate: " "SeCreateClientSecurityFromSubjectContext failed with %x\n", @@ -3045,8 +3052,15 @@ NTSTATUS nfs41_GetLUID( sec_qos.ImpersonationLevel = SecurityIdentification; sec_qos.Length = sizeof(SECURITY_QUALITY_OF_SERVICE); sec_qos.EffectiveOnly = 0; - status = SeCreateClientSecurityFromSubjectContext(&sec_ctx, &sec_qos, 1, - &clnt_sec_ctx); + /* + * Arg |ServerIsRemote| must be |FALSE|, otherwise processes + * like Cygwin setup-x86_64.exe can fail during "Activation + * Context" creation in + * |SeCreateClientSecurityFromSubjectContext()| with + * |STATUS_BAD_IMPERSONATION_LEVEL| + */ + status = SeCreateClientSecurityFromSubjectContext(&sec_ctx, &sec_qos, + FALSE, &clnt_sec_ctx); if (status) { print_error("nfs41_GetLUID: SeCreateClientSecurityFromSubjectContext " "failed %x\n", status); @@ -3078,7 +3092,15 @@ NTSTATUS nfs41_get_sec_ctx( sec_qos.ImpersonationLevel = level; sec_qos.Length = sizeof(SECURITY_QUALITY_OF_SERVICE); sec_qos.EffectiveOnly = 0; - status = SeCreateClientSecurityFromSubjectContext(&ctx, &sec_qos, 1, out_ctx); + /* + * Arg |ServerIsRemote| must be |FALSE|, otherwise processes + * like Cygwin setup-x86_64.exe can fail during "Activation + * Context" creation in + * |SeCreateClientSecurityFromSubjectContext()| with + * |STATUS_BAD_IMPERSONATION_LEVEL| + */ + status = SeCreateClientSecurityFromSubjectContext(&ctx, &sec_qos, + FALSE, out_ctx); if (status != STATUS_SUCCESS) { print_error("SeCreateClientSecurityFromSubjectContext " "failed with %x\n", status); diff --git a/tests/manual_testing.txt b/tests/manual_testing.txt index 50029e0..7ce7c2f 100644 --- a/tests/manual_testing.txt +++ b/tests/manual_testing.txt @@ -271,4 +271,12 @@ autoreconf make -j8 all +# +# Run Cygwin installer from NFSv4.1 share +# +wget 'https://www.cygwin.com/setup-x86_64.exe' +chmod a+rx setup-x86_64.exe +# check whether this will open the Cygwin installer window +./setup-x86_64 --no-admin + # EOF. -- 2.43.0 From 5ef218798d5fc376e5d56a764e949127f15c464b Mon Sep 17 00:00:00 2001 From: Roland Mainz <roland.mainz@nrubsig.org> Date: Mon, 27 May 2024 15:44:31 +0200 Subject: [PATCH 3/4] sys: Endless loop in |nfs41_UpcallWaitForReply()| with |STATUS_USER_APC| Fix an endless loop in |nfs41_UpcallWaitForReply()| where |KeWaitForSingleObject()| is always interrupted with |STATUS_USER_APC|. This happens if cygwin1.dll and the binary which uses it is on an NFSv4.1 share. Reported-by: Martin Wege <martin.l.wege@gmail.com> Signed-off-by: Cedric Blancher <cedric.blancher@gmail.com> --- sys/nfs41_driver.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/nfs41_driver.c b/sys/nfs41_driver.c index 2f512c2..d05025c 100644 --- a/sys/nfs41_driver.c +++ b/sys/nfs41_driver.c @@ -1612,7 +1612,7 @@ NTSTATUS nfs41_UpcallWaitForReply( timeout.QuadPart = RELATIVE(SECONDS(secs)); retry_wait: status = KeWaitForSingleObject(&entry->cond, Executive, - UserMode, TRUE, &timeout); + UserMode, FALSE, &timeout); if (status == STATUS_TIMEOUT) status = STATUS_NETWORK_UNREACHABLE; -- 2.43.0 From ff9933cbdd530829d0e894823135faf6a3d54faa Mon Sep 17 00:00:00 2001 From: Roland Mainz <roland.mainz@nrubsig.org> Date: Mon, 27 May 2024 15:52:26 +0200 Subject: [PATCH 4/4] cygwin: Fixup permissions for binaries in /bin too Fixup permissions (chmod a+rx *.exe) for binaries in /bin too Signed-off-by: Cedric Blancher <cedric.blancher@gmail.com> --- cygwin/Makefile.install | 1 + 1 file changed, 1 insertion(+) diff --git a/cygwin/Makefile.install b/cygwin/Makefile.install index aa0e9df..5aa2cc1 100644 --- a/cygwin/Makefile.install +++ b/cygwin/Makefile.install @@ -92,6 +92,7 @@ installdest: cp '/cygdrive/c/Program Files (x86)/Windows Kits/10/bin/x86/ucrt/ucrtbased.dll' $(DESTDIR)/$(CYGWIN_BASEPATH)/sbin/. ; \ fi @ printf "# Set file flags\n" + (cd $(DESTDIR)/$(CYGWIN_BASEPATH)/bin/ && chmod a+rx *.exe) (cd $(DESTDIR)/$(CYGWIN_BASEPATH)/sbin/ && chmod a+rx *.exe *.dll) (cd $(DESTDIR)/$(CYGWIN_BASEPATH)/lib/msnfs41client/ && chmod a+rx *.dll) @printf "\n#\n# TEST sbin dir is %s\n#\n" "$(DESTDIR)/$(CYGWIN_BASEPATH)/sbin/" -- 2.43.0

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