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[patch] msnfs41client_catdbgprintsubcmd_misc_20251209_001.tar.bz2
Posted by Anonymous on Wed 17th Dec 2025 10:25
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From 9bdb92f21e989243c67a4bf92cc023ae69c1da1b Mon Sep 17 00:00:00 2001 From: Roland Mainz <roland.mainz@nrubsig.org> Date: Tue, 9 Dec 2025 20:45:42 +0100 Subject: [PATCH 1/2] cygwin,tests: Add subcmds to catdbgprint.exe to start, print and stop tracing Add subcmds to catdbgprint.exe to start, print and stop tracing. Signed-off-by: Cedric Blancher <cedric.blancher@gmail.com> --- cygwin/devel/msnfs41client.bash | 7 +- tests/catdbgprint/catdbgprint.c | 193 +++++++++++++++++++++++--------- 2 files changed, 145 insertions(+), 55 deletions(-) diff --git a/cygwin/devel/msnfs41client.bash b/cygwin/devel/msnfs41client.bash index 4b769c7..c963e45 100755 --- a/cygwin/devel/msnfs41client.bash +++ b/cygwin/devel/msnfs41client.bash @@ -942,9 +942,12 @@ function watch_kernel_debuglog { printf "# logging start...\n" 1>&2 - catdbgprint + trap 'catdbgprint stoptrace ; trap "" INT TERM EXIT ; printf "# logging done\n" 1>&2' INT TERM EXIT + + catdbgprint starttrace + catdbgprint processtrace + # catdbgprint stoptrace - printf '# logging done\n' 1>&2 return 0 } diff --git a/tests/catdbgprint/catdbgprint.c b/tests/catdbgprint/catdbgprint.c index 7f053e1..62c975d 100644 --- a/tests/catdbgprint/catdbgprint.c +++ b/tests/catdbgprint/catdbgprint.c @@ -39,9 +39,14 @@ #include <evntcons.h> #include <stdio.h> #include <stdlib.h> +#include <string.h> #include <stddef.h> #include <ctype.h> +#define KERNEL_LOGGER_NAME_A "NT Kernel Logger" + +#define EXIT_USAGE (2) /* Traditional UNIX exit code for usage */ + typedef struct _DBGPRINT_EVENT { ULONG ComponentId; /* DPFLTR_xxx_ID */ ULONG Level; /* DPFLTR_LEVEL_xxx */ @@ -62,13 +67,13 @@ void int_to_octal3(int value, unsigned char *restrict out) } static -VOID WINAPI EventCallback(PEVENT_RECORD ev) +VOID WINAPI trace_eventcallback(PEVENT_RECORD ev) { unsigned char buffer[2048]; unsigned char *b = buffer; if (ev->UserDataLength >= offsetof(DBGPRINT_EVENT, Message)) { - size_t i; + ssize_t i; unsigned char c; const DBGPRINT_EVENT *dpe = (const DBGPRINT_EVENT *)ev->UserData; const unsigned char *msg = (const unsigned char *)dpe->Message; @@ -136,70 +141,152 @@ VOID WINAPI EventCallback(PEVENT_RECORD ev) } } -int main(int ac, char *av[]) -{ - TRACEHANDLE hSession = 0; - TRACEHANDLE hTrace = 0; - ULONG status; - int retval = EXIT_SUCCESS; - (void)ac; +static +int do_starttrace(const char *progname) +{ + ULONG status = 0; size_t propsSize = sizeof(EVENT_TRACE_PROPERTIES) + 1024; EVENT_TRACE_PROPERTIES *props = (EVENT_TRACE_PROPERTIES*)calloc(1, propsSize); - if (props == NULL) { - (void)fprintf(stderr, "%s: Malloc failed\n", av[0]); - retval = EXIT_FAILURE; - goto done; + if (!props) { + (void)fprintf(stderr, "%s:[!] malloc() EVENT_TRACE_PROPERTIES failed\n", + progname); + return EXIT_FAILURE; } - props->Wnode.BufferSize = (ULONG)propsSize; - props->Wnode.Flags = WNODE_FLAG_TRACED_GUID; - props->LogFileMode = EVENT_TRACE_REAL_TIME_MODE; - props->EnableFlags = EVENT_TRACE_FLAG_DBGPRINT; - props->LoggerNameOffset = sizeof(EVENT_TRACE_PROPERTIES); -#if 1 - /* Increase buffer size to 32MB */ - props->BufferSize = 64; /* Buffer size in KB (64KB per buffer) */ - props->MinimumBuffers = 512; /* Minimum buffers */ - props->MaximumBuffers = 512; /* Maximum buffers */ -#endif - - status = StartTraceW(&hSession, KERNEL_LOGGER_NAME, props); + *props = (EVENT_TRACE_PROPERTIES){ + .Wnode = (WNODE_HEADER){ + .BufferSize = (ULONG)propsSize, + .Flags = WNODE_FLAG_TRACED_GUID + }, + .LogFileMode = EVENT_TRACE_REAL_TIME_MODE, + .EnableFlags = EVENT_TRACE_FLAG_DBGPRINT, + .BufferSize = 64, /* KB per buffer */ + .MinimumBuffers = 512, /* 64KB * 512 = 32MB */ + .MaximumBuffers = 512 + }; + + TRACEHANDLE hSession = 0; + status = StartTraceA(&hSession, KERNEL_LOGGER_NAME_A, props); if (status == ERROR_ALREADY_EXISTS) { - (void)fprintf(stderr, - "#### Kernel Logger already running, attaching...\n"); - hSession = 0; - } else if (status != ERROR_SUCCESS) { - (void)fprintf(stderr, "%s: StartTraceA() failed with error=%d\n", - av[0], (int)status); - retval = EXIT_FAILURE; - goto done; - } else { - (void)fprintf(stderr, - "#### Started Kernel Logger session.\n"); + (void)fprintf(stderr, "#### Kernel Logger already running\n"); + free(props); + return EXIT_SUCCESS; + } + else if (status != ERROR_SUCCESS) { + (void)fprintf(stderr, "%s: StartTraceA() failed, lasterr=%d\n", + progname, + (int)status); + free(props); + return EXIT_FAILURE; + } + + (void)fprintf(stderr, "#### Started Kernel Logger\n"); + free(props); + + return EXIT_SUCCESS; +} + +static TRACEHANDLE g_hTrace = 0; + +static +BOOL WINAPI processtrace_ctrlhandler(DWORD type) +{ + if ((type == CTRL_C_EVENT) || + (type == CTRL_BREAK_EVENT) || + (type == CTRL_CLOSE_EVENT)) { + + (void)fprintf(stderr, "#### <CTRL-C>\n"); + if (g_hTrace) { + (void)CloseTrace(g_hTrace); + g_hTrace = 0; + } + + exit(EXIT_SUCCESS); + } + + return FALSE; +} + +static +int do_processtrace(const char *progname) +{ + ULONG status; + EVENT_TRACE_LOGFILEA log = { + .LoggerName = (LPSTR)KERNEL_LOGGER_NAME_A, + .ProcessTraceMode = PROCESS_TRACE_MODE_REAL_TIME | PROCESS_TRACE_MODE_EVENT_RECORD, + .EventRecordCallback = trace_eventcallback + }; + + g_hTrace = OpenTraceA(&log); + if (g_hTrace == INVALID_PROCESSTRACE_HANDLE) { + (void)fprintf(stderr, "%s: OpenTraceA() failed, lasterr=%d\n", + progname, (int)GetLastError()); + return EXIT_FAILURE; } - EVENT_TRACE_LOGFILE log = { - .LoggerName = KERNEL_LOGGER_NAME, - .ProcessTraceMode = - PROCESS_TRACE_MODE_REAL_TIME | - PROCESS_TRACE_MODE_EVENT_RECORD, - .EventRecordCallback = EventCallback + (void)SetConsoleCtrlHandler(processtrace_ctrlhandler, TRUE); + + status = ProcessTrace(&g_hTrace, 1, NULL, NULL); + (void)fprintf(stderr, "#### ProcessTrace() returned, lasterr=%d\n", + (int)status); + + (void)CloseTrace(g_hTrace); + g_hTrace = 0; + + /* Treat non-zero status as failure */ + return (status == ERROR_SUCCESS) ? EXIT_SUCCESS : EXIT_FAILURE; +} + +static +int do_stoptrace(const char *progname) +{ + EVENT_TRACE_PROPERTIES props = { + .Wnode = (WNODE_HEADER){ .BufferSize = sizeof(EVENT_TRACE_PROPERTIES) } }; + ULONG status = StopTraceA(0, KERNEL_LOGGER_NAME_A, &props); - hTrace = OpenTrace(&log); - if (hTrace == INVALID_PROCESSTRACE_HANDLE) { - (void)fprintf(stderr, "%s: OpenTrace() failed with error=%d\n", - av[0], (int)GetLastError()); - retval = EXIT_FAILURE; - goto done; + if ((status != ERROR_SUCCESS) && (status != ERROR_MORE_DATA)) { + (void)fprintf(stderr, "%s: StopTraceA() failed, lasterr=%d\n", + progname, (int)status); + return EXIT_FAILURE; } + (void)fprintf(stderr, "#### Stopped Kernel Logger.\n"); + + return EXIT_SUCCESS; +} + +static +void usage(const char *progname) +{ (void)fprintf(stderr, - "#### Listening for |DbgPrint*()| messages...\n"); - status = ProcessTrace(&hTrace, 1, NULL, NULL); + "Usage:\n" + "\t%s starttrace - start NT Kernel Logger with DbgPrint capture\n" + "\t%s processtrace - open and process DbgPrint events\n" + "\t%s stoptrace - stop NT Kernel Logger session\n", + progname, progname, progname); +} + +int main(int argc, char *av[]) +{ + if (argc < 2) { + usage(av[0]); + return EXIT_USAGE; + } -done: - return retval; + /* + * Subcmd dispatcher + */ + if (strcmp(av[1], "starttrace") == 0) { + return do_starttrace(av[0]); + } else if (strcmp(av[1], "processtrace") == 0) { + return do_processtrace(av[0]); + } else if (strcmp(av[1], "stoptrace") == 0) { + return do_stoptrace(av[0]); + } else { + (void)fprintf(stderr, "%s: Unknown option '%s\n", av[0], av[1]); + return EXIT_FAILURE; + } } -- 2.51.0 From 86eeea6942359b44dc237fe9625a5b0e97e2e315 Mon Sep 17 00:00:00 2001 From: Roland Mainz <roland.mainz@nrubsig.org> Date: Tue, 9 Dec 2025 20:56:45 +0100 Subject: [PATCH 2/2] sys: |nfs41_Create()|/|nfs41_CollapseOpen()|: Clarify that "RequestedClasses" debug output belongs to |QUERY_ON_CREATE_ECP_CONTEXT| |nfs41_Create()|/|nfs41_CollapseOpen()|: Clarify that "RequestedClasses" debug output belongs to |QUERY_ON_CREATE_ECP_CONTEXT|. Signed-off-by: Cedric Blancher <cedric.blancher@gmail.com> --- sys/nfs41sys_openclose.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/sys/nfs41sys_openclose.c b/sys/nfs41sys_openclose.c index 885ec5e..27ea22f 100644 --- a/sys/nfs41sys_openclose.c +++ b/sys/nfs41sys_openclose.c @@ -755,7 +755,8 @@ NTSTATUS nfs41_Create( PQUERY_ON_CREATE_ECP_CONTEXT qocec = get_queryoncreateecpcontext(RxContext->CurrentIrp); if (qocec) { - DbgP("nfs41_Create: RequestedClasses=0x%lx\n", qocec->RequestedClasses); + DbgP("nfs41_Create: QUERY_ON_CREATE_ECP_CONTEXT.RequestedClasses=0x%lx\n", + qocec->RequestedClasses); } #ifdef NFS41_DRIVER_ALLOW_CREATEFILE_ACLS @@ -1445,7 +1446,7 @@ NTSTATUS nfs41_CollapseOpen( PQUERY_ON_CREATE_ECP_CONTEXT qocec = get_queryoncreateecpcontext(RxContext->CurrentIrp); if (qocec) { - DbgP("nfs41_CollapseOpen: RequestedClasses=0x%lx\n", + DbgP("nfs41_CollapseOpen: QUERY_ON_CREATE_ECP_CONTEXT.RequestedClasses=0x%lx\n", qocec->RequestedClasses); } -- 2.51.0

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