* ldd.cc: New file. First stab at implementing ldd-like functionality for
Cygwin. * Makefile.in (CYGWIN_BINS): Add ldd. (ldd.exe): Use -lpsapi.
This commit is contained in:
Christopher Faylor
parent
aa9f366548
commit
086dc27fec
@ -1,3 +1,10 @@
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2009-01-09 Christopher Faylor <me+cygwin@cgf.cx>
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* ldd.cc: New file. First stab at implementing ldd-like functionality
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for Cygwin.
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* Makefile.in (CYGWIN_BINS): Add ldd.
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(ldd.exe): Use -lpsapi.
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2009-01-05 Pierre Humblet <Pierre.Humblet@ieee.org>
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2009-01-05 Pierre Humblet <Pierre.Humblet@ieee.org>
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* cygcheck.cc (dump_sysinfo_services): Quote the path for popen.
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* cygcheck.cc (dump_sysinfo_services): Quote the path for popen.
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@ -52,7 +52,7 @@ MINGW_CXX := ${srcdir}/mingw ${CXX} -I${updir}
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# List all binaries to be linked in Cygwin mode. Each binary on this list
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# List all binaries to be linked in Cygwin mode. Each binary on this list
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# must have a corresponding .o of the same name.
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# must have a corresponding .o of the same name.
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CYGWIN_BINS := ${addsuffix .exe,cygpath getfacl kill mkgroup \
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CYGWIN_BINS := ${addsuffix .exe,cygpath getfacl ldd kill mkgroup \
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mkpasswd mount passwd ps regtool setfacl setmetamode ssp umount}
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mkpasswd mount passwd ps regtool setfacl setmetamode ssp umount}
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# List all binaries to be linked in MinGW mode. Each binary on this list
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# List all binaries to be linked in MinGW mode. Each binary on this list
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@ -73,6 +73,8 @@ cygcheck.exe: bloda.o path.o dump_setup.o
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cygcheck.exe: MINGW_LDFLAGS += -lntdll
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cygcheck.exe: MINGW_LDFLAGS += -lntdll
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cygpath.exe: ALL_LDFLAGS += -lntdll
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cygpath.exe: ALL_LDFLAGS += -lntdll
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ldd.exe: ALL_LDFLAGS += -lpsapi
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# Check for dumper's requirements and enable it if found.
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# Check for dumper's requirements and enable it if found.
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LIBICONV := @libiconv@
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LIBICONV := @libiconv@
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libbfd := ${shell $(CC) -B$(bupdir2)/bfd/ --print-file-name=libbfd.a}
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libbfd := ${shell $(CC) -B$(bupdir2)/bfd/ --print-file-name=libbfd.a}
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265
winsup/utils/ldd.cc
Normal file
265
winsup/utils/ldd.cc
Normal file
@ -0,0 +1,265 @@
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/* Copyright (c) 2009, Chris Faylor
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Neither the name of the owner nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <errno.h>
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#include <getopt.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/cygwin.h>
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#include <unistd.h>
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#define _WIN32_WINNT 0x0501
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#include <windows.h>
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#include <imagehlp.h>
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#include <psapi.h>
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#define VERSION "1.0"
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struct option longopts[] =
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{
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{"help", no_argument, NULL, 0},
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{"version", no_argument, NULL, 0},
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{"data-relocs", no_argument, NULL, 'd'},
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{"function-relocs", no_argument, NULL, 'r'},
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{"unused", no_argument, NULL, 'u'},
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{0, no_argument, NULL, 0}
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};
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static int
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usage (const char *fmt, ...)
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{
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va_list ap;
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va_start (ap, fmt);
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fprintf (stderr, "ldd: ");
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vfprintf (stderr, fmt, ap);
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fprintf (stderr, "\nTry `ldd --help' for more information.\n");
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exit (1);
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}
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#define print_errno_error_and_return(__fn) \
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do {\
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fprintf (stderr, "ldd: %s: %s\n", (__fn), strerror (errno));\
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return 1;\
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} while (0)
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#define set_errno_and_return(x) \
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do {\
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cygwin_internal (CW_SETERRNO, __FILE__, __LINE__ - 2);\
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return (x);\
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} while (0)
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static HANDLE hProcess;
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static int
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start_process (const char *fn)
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{
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ssize_t len = cygwin_conv_path (CCP_POSIX_TO_WIN_A, fn, NULL, 0);
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if (len <= 0)
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print_errno_error_and_return (fn);
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char fn_win[len + 1];
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if (cygwin_conv_path (CCP_POSIX_TO_WIN_A, fn, fn_win, len))
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print_errno_error_and_return (fn);
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STARTUPINFO si = {};
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PROCESS_INFORMATION pi;
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si.cb = sizeof (si);
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if (CreateProcess (NULL, fn_win, NULL, NULL, FALSE, DEBUG_PROCESS, NULL, NULL, &si, &pi))
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{
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hProcess = pi.hProcess;
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DebugSetProcessKillOnExit (true);
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return 0;
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}
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set_errno_and_return (1);
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}
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static int
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get_entry_point ()
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{
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HMODULE hm;
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DWORD cb;
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if (!EnumProcessModules (hProcess, &hm, sizeof (hm), &cb) || !cb)
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set_errno_and_return (1);
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MODULEINFO mi = {};
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if (!GetModuleInformation (hProcess, hm, &mi, sizeof (mi)) || !mi.EntryPoint)
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set_errno_and_return (1);
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static const unsigned char int3 = 0xcc;
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if (!WriteProcessMemory (hProcess, mi.EntryPoint, &int3, 1, &cb) || cb != 1)
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set_errno_and_return (1);
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return 0;
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}
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struct dlls
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{
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LPVOID lpBaseOfDll;
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struct dlls *next;
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};
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static int
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print_dlls_and_kill_inferior (dlls *dll)
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{
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while ((dll = dll->next))
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{
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char *fn;
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char fnbuf[MAX_PATH + 1];
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DWORD len = GetModuleFileNameEx (hProcess, (HMODULE) dll->lpBaseOfDll, fnbuf, sizeof(fnbuf) - 1);
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if (!len)
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fn = strdup ("???");
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else
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{
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fnbuf[MAX_PATH] = '\0';
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ssize_t cwlen = cygwin_conv_path (CCP_WIN_A_TO_POSIX, fnbuf, NULL, 0);
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if (cwlen <= 0)
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fn = strdup (fnbuf);
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else
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{
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char *fn_cyg = (char *) malloc (cwlen + 1);
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if (cygwin_conv_path (CCP_WIN_A_TO_POSIX, fnbuf, fn_cyg, cwlen) == 0)
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fn = fn_cyg;
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else
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{
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free (fn_cyg);
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fn = strdup (fnbuf);
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}
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}
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}
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printf ("\t%s (%p)\n", fn, dll->lpBaseOfDll);
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free (fn);
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}
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TerminateProcess (hProcess, 0);
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return 0;
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}
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static int
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report (const char *in_fn, bool multiple)
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{
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if (multiple)
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printf ("%s:\n", in_fn);
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char *fn = realpath (in_fn, NULL);
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if (!fn || start_process (fn))
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print_errno_error_and_return (in_fn);
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DEBUG_EVENT ev;
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unsigned dll_count = 0;
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dlls dll_list = {};
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dlls *dll_last = &dll_list;
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while (1)
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{
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if (WaitForDebugEvent (&ev, 1000))
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/* ok */;
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else
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switch (GetLastError ())
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{
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case WAIT_TIMEOUT:
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continue;
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default:
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usleep (100000);
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goto out;
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}
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switch (ev.dwDebugEventCode)
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{
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case LOAD_DLL_DEBUG_EVENT:
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if (++dll_count == 2)
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get_entry_point ();
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dll_last->next = (dlls *) malloc (sizeof (dlls));
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dll_last->next->lpBaseOfDll = ev.u.LoadDll.lpBaseOfDll;
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dll_last->next->next = NULL;
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dll_last = dll_last->next;
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break;
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case EXCEPTION_DEBUG_EVENT:
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print_dlls_and_kill_inferior (&dll_list);
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break;
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default:
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break;
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}
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if (!ContinueDebugEvent (ev.dwProcessId, ev.dwThreadId, DBG_CONTINUE))
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{
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cygwin_internal (CW_SETERRNO, __FILE__, __LINE__ - 2);
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print_errno_error_and_return (in_fn);
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}
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}
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out:
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return 0;
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}
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int
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main (int argc, char **argv)
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{
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int optch;
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int index;
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while ((optch = getopt_long (argc, argv, "dru", longopts, &index)) != -1)
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switch (optch)
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{
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case 'd':
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case 'r':
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case 'u':
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usage ("option not implemented `-%c'", optch);
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exit (1);
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case 0:
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if (index == 1)
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{
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printf ("ldd (Cygwin) %s\nCopyright (C) 2009 Chris Faylor\n"
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"This is free software; see the source for copying conditions. There is NO\n"
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"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n",
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VERSION);
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exit (0);
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}
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else
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{
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puts ("Usage: ldd [OPTION]... FILE...\n\
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--help print this help and exit\n\
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--version print version information and exit\n\
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-r, --function-relocs process data and function relocations\n\
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(currently unimplemented)\n\
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-u, --unused print unused direct dependencies\n\
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(currently unimplemented)\n\
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-v, --verbose print all information\n\
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(currently unimplemented)");
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exit (0);
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}
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}
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argv += optind;
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if (!*argv)
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usage("missing file arguments");
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int ret = 0;
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bool multiple = !!argv[1];
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char *fn;
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while ((fn = *argv++))
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if (report (fn, multiple))
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ret = 1;
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exit (ret);
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}
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