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authorcvs2svn <>2014-02-18 19:58:41 +0000
committercvs2svn <>2014-02-18 19:58:41 +0000
commitb5279ecc51ff751ccd052fbb7c20efd529575f7e (patch)
tree64141e96a5d64ae59fb7f410270e4daa41878a03 /winsup/testsuite/winsup.api/cygload.cc
parenta2a48cb593a9b3cc3f5c63c39f52c32db31cec50 (diff)
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This commit was manufactured by cvs2svn to create tag 'cygwin-pre-user-db'.cygwin-pre-user-db
Sprout from cygwin-1_7_29-release-branchpoint 2014-02-18 19:58:40 UTC cvs2svn 'This commit was manufactured by cvs2svn to create branch 'cygwin-1_7_29' Cherrypick from master 2014-02-08 22:25:11 UTC Corinna Vinschen <corinna@vinschen.de> 'Fix ChangeLog': winsup/cygwin/ChangeLog winsup/cygwin/miscfuncs.cc winsup/cygwin/miscfuncs.h winsup/cygwin/mount.cc Delete: winsup/COPYING winsup/CYGWIN_LICENSE winsup/ChangeLog winsup/Makefile.common winsup/Makefile.in winsup/README winsup/acinclude.m4 winsup/aclocal.m4 winsup/autogen.sh winsup/c++wrap winsup/ccwrap winsup/config.guess winsup/config.sub winsup/configure winsup/configure.ac winsup/configure.cygwin winsup/cygserver/ChangeLog winsup/cygserver/ChangeLog.64bit winsup/cygserver/Makefile.in winsup/cygserver/README winsup/cygserver/aclocal.m4 winsup/cygserver/autogen.sh winsup/cygserver/bsd_helper.cc winsup/cygserver/bsd_helper.h winsup/cygserver/bsd_log.cc winsup/cygserver/bsd_log.h winsup/cygserver/bsd_mutex.cc winsup/cygserver/bsd_mutex.h 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winsup/utils/cygwin-console-helper.cc winsup/utils/dump_setup.cc winsup/utils/dumper.cc winsup/utils/dumper.h winsup/utils/getconf.c winsup/utils/getfacl.c winsup/utils/kill.cc winsup/utils/ldd.cc winsup/utils/ldh.cc winsup/utils/loadlib.h winsup/utils/locale.cc winsup/utils/minidumper.cc winsup/utils/mkgroup.c winsup/utils/mkpasswd.c winsup/utils/module_info.cc winsup/utils/mount.cc winsup/utils/parse_pe.cc winsup/utils/passwd.c winsup/utils/path.cc winsup/utils/path.h winsup/utils/pldd.c winsup/utils/ps.cc winsup/utils/regtool.cc winsup/utils/setfacl.c winsup/utils/setmetamode.c winsup/utils/ssp.c winsup/utils/ssp.txt winsup/utils/strace.cc winsup/utils/testsuite.cc winsup/utils/testsuite.h winsup/utils/tzset.c winsup/utils/umount.cc winsup/utils/utils.xml winsup/utils/wide_path.h
Diffstat (limited to 'winsup/testsuite/winsup.api/cygload.cc')
-rw-r--r--winsup/testsuite/winsup.api/cygload.cc628
1 files changed, 0 insertions, 628 deletions
diff --git a/winsup/testsuite/winsup.api/cygload.cc b/winsup/testsuite/winsup.api/cygload.cc
deleted file mode 100644
index bdbbcd1a3..000000000
--- a/winsup/testsuite/winsup.api/cygload.cc
+++ /dev/null
@@ -1,628 +0,0 @@
-/* cygload.cc
-
- Copyright 2005, 2006 Red Hat, Inc.
-
- Written by Max Kaehn <slothman@electric-cloud.com>
-
- This software is a copyrighted work licensed under the terms of the
- Cygwin license. Please consult the file "CYGWIN_LICENSE" for details.
-
- Note that dynamically linking to cygwin1.dll automatically places your code
- under the GPL unless you purchase a Cygwin Contract with Red Hat, Inc.
- See http://www.redhat.com/software/cygwin/ for more information.
-
- cygload demonstrates how to dynamically load cygwin1.dll. The default
- build uses MinGW to compile it; the Makefile also shows how to build
- it using the Microsoft compiler.
-
- By default, the program will silently test basic functionality:
- * Making space on the stack for cygtls
- * Loading and initializing cygwin1.dll
- * Path translation
- * Error handling
- * Signal handling
-
- Options for this program:
- -v Verbose output. Normal operation is entirely silent,
- save for errors.
- -testinterrupts Pauses the program for 30 seconds so you can demonstrate
- that it handles ^C properly.
- -cygwin Name of DLL to load. Defaults to "cygwin1.dll". */
-
-#include "cygload.h"
-#include <iostream>
-#include <sstream>
-#include <vector>
-#include <errno.h> // for ENOENT
-#include <sys/types.h>
-#include <sys/stat.h>
-
-using std::cout;
-using std::cerr;
-using std::endl;
-using std::string;
-
-cygwin::padding *cygwin::padding::_main = NULL;
-DWORD cygwin::padding::_mainTID = 0;
-
-// A few cygwin constants.
-static const int SIGHUP = 1;
-static const int SIGINT = 2;
-static const int SIGTERM = 15; // Cygwin won't deliver this one to us;
- // expect unadorned "kill" to just kill
- // your process.
-static const int SIGSTOP = 17; // Cygwin insists on delivering SIGSTOP to
- // the main thread. If your main thread
- // is not interruptible, you'll miss the
- // signal and ignore the request to suspend.
-static const int SIGTSTP = 18; // ^Z on a tty.
-static const int SIGCONT = 19; // Resume a stopped process.
-static const int SIGUSR1 = 30;
-static const int SIGUSR2 = 31;
-
-// Using *out instead of cout. In verbose mode, out == &cout.
-static std::ostream *out = NULL;
-
-cygwin::padding::padding ()
-{
- _main = this;
- _mainTID = GetCurrentThreadId ();
-
- _end = _padding + sizeof (_padding);
- char *stackbase;
-#ifdef __GNUC__
- __asm__ (
- "movl %%fs:4, %0"
- :"=r"(stackbase)
- );
-#else
- __asm
- {
- mov eax, fs:[4];
- mov stackbase, eax;
- }
-#endif
- _stackbase = stackbase;
-
- // We've gotten as close as we can to the top of the stack. Even
- // subverting the entry point, though, still doesn't get us there-- I'm
- // getting 64 bytes in use before the entry point. So we back up the data
- // there and restore it when the destructor is called:
- if ((_stackbase - _end) != 0)
- {
- size_t delta = (_stackbase - _end);
-
- _backup.resize (delta);
-
- memcpy (&(_backup[0]), _end, delta);
- }
-}
-
-cygwin::padding::~padding ()
-{
- _main = NULL;
-
- if (_backup.size ())
- {
- memcpy (_end, &(_backup[0]), _backup.size ());
- }
-}
-
-void
-cygwin::padding::check ()
-{
- if (_main == NULL)
- throw std::runtime_error ("No padding declared!");
- if (_mainTID != GetCurrentThreadId ())
- throw std::runtime_error ("You need to initialize cygwin::connector "
- "in the same thread in which you declared the "
- "padding.");
-
- if (_main->_backup.size ())
- *out << "Warning! Stack base is "
- << static_cast<void *>(_main->_stackbase)
- << ". padding ends at " << static_cast<void *>(_main->_end)
- << ". Delta is " << (_main->_stackbase - _main->_end)
- << ". Stack variables could be overwritten!" << endl;
-}
-
-cygwin::connector::connector (const char *dll)
-{
- // This will throw if padding is not in place.
- padding::check ();
-
- *out << "Loading " << dll << "..." << endl;
-
- // This should call init.cc:dll_entry() with DLL_PROCESS_ATTACH,
- // which calls dll_crt0_0().
- if ((_library = LoadLibrary (dll)) == NULL)
- throw windows_error ("LoadLibrary", dll);
-
- *out << "Initializing cygwin..." << endl;
-
- // This calls dcrt0.cc:cygwin_dll_init(), which calls dll_crt0_1(),
- // which will, among other things:
- // * spawn the cygwin signal handling thread from sigproc_init()
- // * initialize the thread-local storage for this thread and overwrite
- // the first 4K of the stack
- void (*cyginit) ();
- get_symbol ("cygwin_dll_init", cyginit);
- (*cyginit) ();
-
- *out << "Loading symbols..." << endl;
-
- // Pick up the function pointers for the basic infrastructure.
- get_symbol ("__errno", _errno);
- get_symbol ("strerror", _strerror);
- get_symbol ("cygwin_conv_to_full_posix_path", _conv_to_full_posix_path);
- get_symbol ("cygwin_conv_to_full_win32_path", _conv_to_full_win32_path);
-
- // Note that you need to be running an interruptible cygwin function if
- // you want to receive signals. You can use the standard signal()
- // mechanism if you're willing to have your main thread spend all its time
- // in interruptible cygwin functions like sleep(). Christopher Faylor
- // cautions that this solution "could be slightly racy": if a second
- // signal comes in before the first one is done processing, the thread
- // won't be back in sigwait() to catch it.
- *out << "Spawning signal handling thread..." << endl;
-
- _waiting_for_signals = true;
- _signal_thread_done = false;
- InitializeCriticalSection (&_thread_mutex);
-
- DWORD tid;
-
- _signal_thread = CreateThread (NULL, // Default security.
- 32768, // Adjust the stack size as
- // appropriate for what your signal
- // handler needs in order to run, and
- // then add 4K for cygtls.
- &signal_thread, // Function to call
- this, // Context
- 0, // Flags
- &tid); // Thread ID
-
- if (_signal_thread == NULL)
- throw windows_error ("CreateThread", "signal_thread");
-}
-
-cygwin::connector::~connector ()
-{
- try
- {
- // First, shut down signal handling.
- int (*raze) (int);
- int (*pthread_join) (void *, void **);
-
- get_symbol ("raise", raze);
- get_symbol ("pthread_join", pthread_join);
-
- // Tell the listener to shut down...
- _waiting_for_signals = false;
- int err = 0;
- EnterCriticalSection (&_thread_mutex);
- if (!_signal_thread_done)
- err = raze (SIGUSR2);
- LeaveCriticalSection (&_thread_mutex);
- if (err)
- cerr << error (this, "raise", "SIGUSR2").what () << endl;
- // ...and get the thread to join.
- if (!CloseHandle (_signal_thread))
- throw windows_error ("CloseHandle", "signal_thread");
-
- // This should call init.cc:dll_entry() with DLL_PROCESS_DETACH.
- if (!FreeLibrary (_library))
- throw windows_error ("FreeLibrary", "cygwin1.dll");
- }
- catch (std::exception &x)
- {
- cerr << x.what () << endl;
- }
-}
-
-DWORD WINAPI
-cygwin::connector::signal_thread (void *param)
-{
- connector *that = reinterpret_cast < connector * > (param);
-
- try
- {
- that->await_signal ();
- }
- catch (std::exception &x)
- {
- cerr << "signal_thread caught " << x.what () << endl;
- return 0;
- }
- return 0;
-}
-
-void
-cygwin::connector::await_signal ()
-{
- // Wait for signals.
- unsigned long sigset[32];
- int sig;
- int (*empty) (void *);
- int (*add) (void *, int);
- int (*wait) (void *, int *);
-
- get_symbol ("sigemptyset", empty);
- get_symbol ("sigaddset", add);
- get_symbol ("sigwait", wait);
-
- empty (sigset);
- add (sigset, SIGHUP);
- add (sigset, SIGINT);
-// add (sigset, SIGSTOP);
-// add (sigset, SIGTSTP); // I can't get this to suspend properly, so
- // I'll leave it up to chance that the main
- // thread is interruptible.
- add (sigset, SIGUSR1);
- add (sigset, SIGUSR2);
-
- while (_waiting_for_signals)
- {
- int err = wait (sigset, &sig);
- if (err)
- cerr << error (this, "sigwait").what () << endl;
- else
- *out << "Received signal " << sig << "." << endl;
- switch (sig)
- {
- case SIGUSR2:
- if (!_waiting_for_signals)
- {
- // SIGUSR2 is how ~connector wakes this thread
- goto done;
- }
- break;
- default:
- break;
- }
- handle_signals (sig);
- }
-done:
- EnterCriticalSection (&_thread_mutex);
- _signal_thread_done = true;
- LeaveCriticalSection (&_thread_mutex);
-
- *out << "await_signal done." << endl;
-}
-
-cygwin::connector::signal_handler *
-cygwin::connector::set_handler (int signal, signal_handler *handler)
-{
- signal_handler *retval = _signal_handlers[signal];
-
- if (handler == NULL)
- _signal_handlers.erase (signal);
- else
- _signal_handlers[signal] = handler;
-
- return retval;
-}
-
-void
-cygwin::connector::handle_signals (int sig)
-{
- callback_list::iterator h = _signal_handlers.find (sig);
-
- if (h != _signal_handlers.end ())
- {
- try
- {
- signal_handler *handler = h->second;
- (*handler) (sig);
- return;
- }
- catch (std::exception &x)
- {
- cerr << "cygwin::connector::handle_signals caught "
- << x.what () << "!" << endl;
- return;
- }
- }
-
- cerr << "No handler for signal " << sig << "!" << endl;
-}
-
-int
-cygwin::connector::err_no () const
-{
- int *e = (*_errno) ();
- if (e == NULL)
- {
- return -1;
- }
- return *e;
-}
-
-string
-cygwin::connector::str_error (int err_no) const
-{
- string retval;
-
- const char *s = (*_strerror) (err_no);
- if (s != NULL)
- {
- retval = s;
- }
- else
- {
- std::ostringstream o;
- o << "Unexpected errno " << err_no;
- retval = o.str ();
- }
-
- return retval;
-}
-
-string
-cygwin::connector::unix_path (const string &windows) const
-{
- char buf[MAX_PATH];
-
- _conv_to_full_posix_path (windows.c_str (), buf);
-
- return string (buf);
-}
-
-string
-cygwin::connector::win_path (const string &unix) const
-{
- char buf[MAX_PATH];
-
- _conv_to_full_win32_path (unix.c_str (), buf);
-
- return string (buf);
-}
-
-///////////////////////////////////////////////////////////////////////////////
-///////////////////////////////////////////////////////////////////////////////
-
-string
-cygwin::error::format (cygwin::connector *c,
- int err_no, const char *message, const char *detail)
-{
- std::ostringstream ret;
-
- ret << message;
- if (detail)
- {
- ret << "(" << detail << ")";
- }
- ret << ": " << c->str_error (err_no);
-
- return ret.str ();
-}
-
-string
-windows_error::format (DWORD error, const char *message, const char *detail)
-{
- std::ostringstream ret;
- char buf[512];
- DWORD bytes;
-
- ret << message;
- if (detail)
- ret << "(" << detail << ")";
- ret << ": ";
-
- bytes = FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, 0, error,
- MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
- buf, sizeof (buf), 0);
-
- if (bytes == 0)
- ret << "Unexpected Windows error " << error;
- else
- {
- // Remove trailing whitespace
- char *p = buf + bytes - 1;
- while (isspace (*p))
- *p-- = '\0';
- ret << buf << " (" << error << ")";
- }
-
- return ret.str ();
-}
-
-///////////////////////////////////////////////////////////////////////////////
-///////////////////////////////////////////////////////////////////////////////
-
-extern "C" int mainCRTStartup ();
-
-// This just pushes 4K onto the stack, backs up the original stack, and
-// jumps into the regular startup code. This avoids having to worry about
-// backing up argc and argv.
-extern "C" int __stdcall
-cygloadCRTStartup ()
-{
- cygwin::padding padding;
- return mainCRTStartup ();
-}
-
-///////////////////////////////////////////////////////////////////////////////
-///////////////////////////////////////////////////////////////////////////////
-
-static void
-hangup (int sig)
-{
- cout << "Hangup (" << sig << ")." << endl;
-}
-
-static void
-interrupt (int sig)
-{
- cerr << "Interrupt (" << sig << ")!" << endl;
- exit (0);
-}
-
-static int caught = false;
-
-static void
-catch_signal (int)
-{
- *out << "Signals are working." << endl;
- caught = true;
-}
-
-int
-main (int argc, char *argv[])
-{
- // If you do not want to use cygloadCRTStartup() as an entry point,
- // uncomment this line, but be sure to have *everything* you want
- // from the stack below it backed up before you call the
- // constructor for cygwin::connector.
- //cygwin::padding padding;
-
- std::ostringstream output;
- bool verbose = false, testinterrupts = false;
- const char *dll = "cygwin1.dll";
-
- out = &output;
-
- for (int i = 1; i < argc; ++i)
- {
- string arg = string (argv[i]);
-
- if (arg == "-v")
- {
- verbose = true;
- out = &cout;
- }
- else if (arg == "-testinterrupts")
- testinterrupts = true;
- else if (arg == "-cygwin")
- {
- if (i+1 >= argc)
- {
- cerr << "Need to supply an argument with -cygwin." << endl;
- return 255;
- }
- dll = argv[++i];
- }
- }
-
-
- try
- {
- *out << "Connecting to cygwin..." << endl;
- cygwin::connector cygwin (dll);
- *out << "Successfully connected." << endl;
-
- string result = cygwin.str_error (ENOENT);
-
- if (result != "No such file or directory")
- {
- cerr << "strerror(ENOENT) returned \""
- << result
- << "\" instead of \"No such file or directory\"!"
- << endl;
- return 1;
- }
- else if (verbose)
- {
- *out << "strerror(ENOENT) = " << result << endl;
- }
-
- // Path conversion: from cygwin to Windows...
- result = cygwin.win_path ("/usr");
- struct _stat statbuf;
- if (::_stat (result.c_str (), &statbuf) < 0)
- {
- cerr << "stat(\"" << result << "\") failed!" << endl;
- return 2;
- }
- else if (verbose)
- {
- *out << "/usr == " << result << endl;
- }
-
- // ...and back:
- char buf[MAX_PATH], scratch[256];
- GetSystemDirectory (buf, sizeof(buf));
- int (*cygstat) (const char *, void *);
- cygwin.get_symbol ("stat", cygstat);
-
- if (cygstat (buf, scratch) < 0)
- {
- cerr << "cygwin stat(\"" << buf << "\") failed!" << endl;
- return 3;
- }
- else if (verbose)
- {
- *out << buf << " == " << cygwin.unix_path(buf) << endl;
- }
-
- // Test error handling. This should output
- // "open(/potrzebie/furshlugginer): No such file or directory"
- {
- int (*cygopen) (const char *, int);
- cygwin.get_symbol ("open", cygopen);
-
- if (cygopen ("/potrzebie/furshlugginer", 0 /* O_RDONLY */ ) < 0)
- {
- int err = cygwin.err_no ();
- if (err != ENOENT)
- {
- cerr << "cygwin open(\"/potrzebie/furshlugginer\", "
- "O_RDONLY): expected to fail with ENOENT, got "
- << err << "!" << endl;
- return 4;
- }
- if (verbose)
- *out << cygwin::error (&cygwin, "open",
- "/potrzebie/furshlugginer").what ()
- << endl;
- }
- else
- {
- cerr << "/potrzebie/furshlugginer should not exist!"
- << endl;
- return 5;
- }
- }
-
- // And signal handling:
- std::pointer_to_unary_function < int , void > h1 (&hangup);
- std::pointer_to_unary_function < int , void > h2 (&interrupt);
- std::pointer_to_unary_function < int , void > h3 (&catch_signal);
- cygwin.set_handler (SIGHUP, &h1);
- cygwin.set_handler (SIGINT, &h2);
- cygwin.set_handler (SIGUSR1, &h3);
-
- // Make sure the signal handler thread has had time to start...
- Sleep (100);
- // Send a test signal to set "caught" to true...
- int (*raze) (int);
- cygwin.get_symbol ("raise", raze);
- raze (SIGUSR1);
- // And give the thread time to wait for the shutdown signal.
- Sleep (100);
-
- if (testinterrupts)
- {
- // This is a worst case scenario for testing interrupts: the
- // main thread is in a long-duration Windows API call. This
- // makes the main thread uninterruptible; cygwin will retry
- // 20 times, with a low_priority_sleep(0) between each try.
- cout << "Sleeping for 30 seconds, waiting for a signal..." << endl;
- Sleep (30000);
- cout << "Done waiting." << endl;
- }
- }
- catch (std::exception &x)
- {
- cerr << x.what () << endl;
- return 2;
- }
-
- if (caught)
- return 0;
- else
- {
- cerr << "Never received SIGUSR1." << endl;
- return 1;
- }
-}