Any C++ app that calls 'throw' on 64-bit Cygwin results in an
exception of type STATUS_GCC_THROW (0x20474343) generated by the C++
runtime. Don't pollute the strace output by printing information
about this and other GCC exceptions.
strace only printed the Windows PID in event output so far.
Especially now that Windows and Cygwin PID are decoupled, the
strace user might like to see the Cygwin pid in event output as
well. However, at process startup, the process might not have
a Cygwin PID yet.
To mitigate this, always print the Windows PID and only add the
Cygwin pid if it exists.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Updates to misc files to integrate AIO into the Cygwin source tree.
Much of it has to be done when adding any new syscalls. There are
some updates to limits.h for AIO-specific limits. And some doc mods.
Recent versions of gcc are optimizing away the TLS buffer allocated in
main, so we need to tell gcc that it's really used. RtlSecureZeroMemory
accomplishes this while also inlining the memset.
Signed-off-by: Daniel Santos <daniel.santos@pobox.com>
The new functionality to set the thread name for debugging purposes
creates exception debugging events. These are printed out when running
strace. Since these exceptions have nothing to do with real exceptions
but are, like breakpoint execptions, expected and non-fatal, don't print
exception info for them.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Bump GPLv2+ to GPLv3+ for some files, clarify BSD 2-clause.
Everything else stays under GPLv3+.
New Linking Exception exempts resulting executables from LGPLv3 section 4.
Add CONTRIBUTORS file to keep track of licensing.
Remove 'Copyright Red Hat Inc' comments.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* cygtls.h: Include cygtls_padsize.h and define CYGTLS_PADSIZE there.
* cygtls_padsize.h: New file. Define CYGTLS_PADSIZE.
* environ.cc (parse_options): Fix NULL pointer access.
* init.cc (threadfunc_fe): Do not force stack align on x86_64.
* strace.cc (main2): Rename from main.
(main): Make room for _cygtls area on stack and just call main2. Add
comment to explain why.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Not sure if this is wanted, but on a couple of occasions recently I have been
presented with strace output which contains an exception at an address in an
unknown module (i.e. not in the cygwin DLL or the main executable), so here is a
patch which adds some more information, including DLL load addresses, to help
interpret such straces.
v2:
Use NtQueryObject() for HANDLE -> filename conversion
Add new '-e' option to toggle this additional logging
2015-06-07 Jon Turney <jon.turney@dronecode.org.uk>
* strace.cc (proc_child): Log process and thread create and exit,
and DLL load and unload.
(GetFileNameFromHandle): New function.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
2012-11-12 Christopher Faylor <me.cygwin2012@cgf.cx>
* Makefile.common: Revamp for new configury. Add default compilation
targets, include .E processing. Add magic for allowing "CFLAGS" to
control optimization options in "CXXFLAGS".
* configure.cygwin: New include for Cygwin configure.in's.
* acinclude.m4: Delete old definitions. Implement AC_WINDOWS_HEADERS,
AC_WINDOWS_LIBS, AC_CYGWIN_INCLUDES, target_builddir, winsup_srcdir.
* aclocal.m4: Regenerate.
* autogen.sh: New file.
* ccwrap: New script.
* c++wrap: New script.
* config.guess: New script.
* config.sub: New script.
* configure: Regenerate.
* configure.in: Eliminate LIB_AC_PROG_* calls in favor of standard.
Delete ancient target test.
* install-sh: New script.
cygserver/ChangeLog:
2012-11-12 Christopher Faylor <me.cygwin2012@cgf.cx>
* Makefile.in: Revamp for new configury.
* configure.in: Revamp for new configury.
* aclocal.m4: Regenerate.
* configure: Ditto.
* autogen.sh: New script.
cygwin/ChangeLog:
2012-11-22 Christopher Faylor <me.cygwin2012@cgf.cx>
* select.cc (select): Don't return -1 when we've timed out after
looping.
2012-11-22 Christopher Faylor <me.cygwin2012@cgf.cx>
* Makefile.in: Revamp for new configury.
(datarootdir): Add variable setting.
(winver_stamp): Accommodate changes to mkvers.sh setting.
(libc.a): Fix race when libm.a might not have been built yet.
* configure.in: Revamp for new configury.
* aclocal.m4: Regenerate.
* configure: Ditto.
* autogen.sh: New script.
* mkvers.sh: Find include directives via CFLAGS and friends rather than
assuming that w32api lives nearby.
utils/ChangeLog:
2012-11-12 Christopher Faylor <me.cygwin2012@cgf.cx>
* aclocal.m4: Regenerate.
* configure: Ditto.
* autogen.sh: New script.
* configure.in: Revamp for new configury.
* Makefile.in: Revamp for new configury. Rename ALL_* to just *.
Always use "VERBOSE" setting.
(MINGW_CXX): Don't include CFLAGS in definition.
(all): Define target first, before everything else so that it is the
default.
(ps.exe): Don't add useless -lcygwin.
(ldh.exe): For consistency, add to existing MINGW_LDFLAGS rather than
redefining them.
(cygcheck.exe): Always include -lz for MINGW_LDFLAGS. Don't try to
figure out where to find it.
(dumper.exe): Simplify check. Assume libraries are installed rather
than trying to retrieve from source tree.
(install): Just use /bin/mkdir to create directories.
(Makefile): Regenerate when standard dependencies change.
* dump_setup.cc: Always include zlib.h. Remove accommodations for it
possibly not existing.
* parse_pe.cc: Add define which allows building with installed
binutils package.
* dumper.cc: Ditto.
* configure: Regenerate.
* Makefile.in: Remove references to mingw and w32api directories.
Use MINGW_CXX instead of mingw script to build MINGW_BINS.
Check for libiconv with $CC --print-file-name.
* cygcheck.cc: Use relative include paths for Cygwin headers.
* path.cc: Ditto.
* strace.cc: Ditto
* mingw: Remove.
* bloda.cc: Change include section to work with Mingw64 headers.
Include psapi.h. Use SystemProcessInformation instead of
SystemProcessesAndThreadsInformation throughout and add define for
w32api headers. Ditto for PSYSTEM_PROCESS_INFORMATION vs.
PSYSTEM_PROCESSES.
(system_module_list): New type to replace SYSTEM_MODULE_INFORMATION.
Change usage throughout accordingly.
(get_module_list): Fetch module list using PSAPI functions
EnumDeviceDrivers and GetDeviceDriverBaseNameA.
* cygcheck.cc (max): Define as __max if not defined already.
(alloca): Only define if not defined already.
(handle_unique_object_name): Use explicit sharing flags rather than
FILE_SHARE_VALID_FLAGS which officially is only available in DDK
headers.
(PRODUCT_ULTIMATE_E): Only define if not defined already.
* dump_setup.cc: Change include section to work with Mingw64 headers.
(NtQueryAttributesFile): Drop NTOSAPI aka DECLSPEC_IMPORT.
* strace.cc: Change include section to work with Mingw64 headers.
(alloca): Only define if not defined already.
NtSetInformationProcess succeeded.
(handle_output_debug_string): Put back DebugActiveProcess since it seems to
still be needed (on my system at least). Detect new format
_STRACE_INTERFACE_ACTIVATE_ADDR which informs whether this is a forked process
or not. Use that to decide if forkdebug should be handled.
option handling to use the same style throughout all Cygwin utils.
Throughout use program_invocation_short_name to refer to current
process name in Cygwin executables.
* utils.sgml: Align documentation to above change. Add missing
sections for getconf, ldd, and setmetamode.
* strace.cc (proc_child): Avoid compiler warning.
if Attaching to a process with the trace-children flag set.
(handle_output_debug_string): Apparently we don't need to explicitly
attach for debugging when a child process starts
* Makefile.in (strace.exe): Link with ntdll
Include throughout files using LoadLibrary function.
* cygcheck.cc (dump_sysinfo): Retrieve kernel32.dll handle via
GetModuleHandle, rather than using LoadLibrary.
* cygpath.cc (get_long_name): Ditto.
(do_sysfolders): Append .dll suffix in LoadLibrary call.
* ldh.cc (WinMain): Use LoadLibraryExW with DONT_RESOLVE_DLL_REFERENCES
to avoid loading malicious library code.
* locale.cc (print_locale_with_codeset): Change way to retrieve
kernel32.dll path.
(load_cygwin): Fetch cygwin DLL path and store in cygwin_dll_path.
* strace.cc: Full ditto.
* path.cc (read_mounts): First use the path stored in cygwin_dll_path,
if available. Then fall back to fetching own path. Add comment.
Drop printing warnings since they look funny in strace output.
(display_internet_error): Use proper format specifier for DWORD.
(environ): Remove unneeded declaration.
(main): Use brace around nested if to avoid an overly-helpful compiler warning.
* dump_setup.cc (parse_filename): Reorganize nested if to avoid an
overly-helpful compiler warning.
* path.cc (GUID_shortcut): Use braces around part of initializer which needs
them.
(conv_fstab_spaces): Parenthesize assignment in while loop to avoid a compiler
warning.
(struct opt): Make static.
* ps.cc (main): Reorganize nested if to avoid an overly-helpful compiler
warning.
* regtool.cc: Make some anonymous structs static to avoid a compiler warning.
* ssp.c (lookup_thread_id): Initialize *tix to zero to avoid potential
uninitialized use.
* strace.cc (add_child): Use proper format specifier for DWORD.
(remove_child): Ditto.
(proc_child): Ditto.
* child_info.h (CURR_CHILD_INFO_MAGIC): Reset.
(child_info::dwProcessId): Delete.
(child_info::straced): New variable.
(child_info::handle_fork): New member function.
* dcrt0.cc (in_forkee): New global variable.
(__cygwin_user_data::forkee): Mark as obsolete.
(do_global_ctors): Use in_forkee rather than user_data->forkee.
(get_cygwin_startup_info): Ditto. Deal with new straced field to allow strace
to deal with children of attached processes.
(initial_env): Accommodate changes to strace::hello.
(child_info_fork::handle_fork): Rename from plain old 'handle_fork'. Move
alloc_stack() call elsewhere.
(dll_crt0_0): Fill out more of user_data. Reference handle_fork via fork_info.
Add some debugging output.
(_dll_crt0): Don't wait for sync thread if sync_startup is invalid. Zero
sync_startup here. Call alloc_stack() here, if appropriate.
(dll_crt0_1): Use in_forkee rather than user_data->forkee.
(dll_crt0): Ditto.
* malloc_wrapper.cc (malloc_init): Ditto.
* dll_init.cc (in_forkee): Remove local static version of this variable.
(dll_list::load_after_fork): Don't set in_forkee here.
* external.cc (cygwin_internal): Use strace method rather than accessing field
directly.
* fhandler.cc (fhandler_base::read): Ditto.
* fhandler_tty.cc (fhandler_tty_common::__acquire_output_mutex): Ditto.
* fork.cc (frok::parent): Invoke strace write_childpid to communicate with
potential strace.
(child_copy): Add more detail to debugging output.
* init.cc (calibration_id): New static variable.
(prime_threads): Set sync_startup to invalid handle if we already know about
thread_func_ix. Use static calibration_id to hold calibration thread id.
* munge_threadfunc (munge_threadfunc): Don't try to debug if we don't find
threadfunc_ix.
(dll_entry): Avoid calling munge_threadfunc and _cygtls::remove on non-cygwin
threads invoked during process startup.
* pinfo.cc (set_myself): Always call strace.hello here regardless of DEBUGGING.
* sigproc.cc (child_info::child_info): Remove spurious handling of dwProcessId.
Set straced as appropriate.
* spawn.cc (spawn_guts): Rename ciresrv to ch. Invoke strace write_childpid to
communicate with potential strace.
* strace.cc: Include child_info.h.
(strace::hello): Remove inited test. Use active() method to test if strace has
been activated. Handle case where we are started before
(mypid): New function.
(strace::vsprntf): Try to deal more intelligently with case where progname may
not be filled out. Put pid in parentheses if it is a windows pid rather than a
cygwin pid. myself has been filled out.
(strace::write_childpid): New function for notifying strace about the creation
of children.
(strace::vprntf): Use strace method rather than accessing field directly.
(strace_printf): Ditto.
(strace::wm): Ditto.
* winsup.h (in_forkee): Declare.
* include/sys/strace.h (strace::write_childpid): Declare new function.
(strace::attached): Define new function.
(strace::active): Ditto.
(strace::active_val): Ditto.
(_STRACE_ON): Delete.
(_STRACE_OFF): Ditto.
(define_strace0): Use strace method rather than accessing field directly.
(strace_printf_wrap): Ditto.
(strace_printf_wrap1): Ditto.
*** cygwin utils changes:
* strace.cc (nprocesses): Make static global.
(quiet): New variable.
(strace_active): Ditto.
(add_child): Increment nprocesses here. Don't add a child if it is already
added (windows bug?). Report on child if not quiet.
(get_child): Just return NULL if child not found.
(remove_child): Report on child if not quiet.
(attach_process): Don't complain if given a windows process. Use windows pid
in error.
(handle_output_debug_string): Issue error if trying to manipulate a process
that we don't know about. Handle _STRACE_CHILD_PID - attach to reported child
when we get this.
(proc_child): Move nprocesses to file scope. Report on exceptions.
(longopts): Implement "--quiet".
(opts): Implement "-q".
(main): Manipulate quiet flag.
* utils.sgml (strace): Add words describing '-q'.
(main): Use show_usecs rather than usecs. Toggle delta if '-u' is specified.
(handle_output_debug_string): Avoid printing microsecond timestamp if
show_usecs == 0.
* utils.sgml (strace): Add words to describe '-u'.
* strace.cc (main): Recognize new option for displaying hex value of strace
type.
(handle_output_debug_string): Prepend output with hex value of strace message
if -H is specified.
Ken Brown
Corinna Vinschen
Mark Geisert
Daniel Santos
Jon TURNEY
Christopher Faylor
Yaakov Selkowitz