diff options
Diffstat (limited to 'winsup/utils/minidumper.cc')
| -rw-r--r-- | winsup/utils/minidumper.cc | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/winsup/utils/minidumper.cc b/winsup/utils/minidumper.cc new file mode 100644 index 000000000..ffbc7a33e --- /dev/null +++ b/winsup/utils/minidumper.cc @@ -0,0 +1,237 @@ +/* minidumper.cc + + Copyright 2014 Red Hat Inc. + + This file is part of Cygwin. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License (file COPYING.dumper) for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. +*/ + +#include <sys/cygwin.h> +#include <cygwin/version.h> +#include <getopt.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <windows.h> + +BOOL verbose = FALSE; +BOOL nokill = FALSE; + +typedef DWORD MINIDUMP_TYPE; + +typedef BOOL (WINAPI *MiniDumpWriteDump_type)( + HANDLE hProcess, + DWORD dwPid, + HANDLE hFile, + MINIDUMP_TYPE DumpType, + CONST void *ExceptionParam, + CONST void *UserStreamParam, + CONST void *allbackParam); + +static void +minidump(DWORD pid, MINIDUMP_TYPE dump_type, const char *minidump_file) +{ + HANDLE dump_file; + HANDLE process; + MiniDumpWriteDump_type MiniDumpWriteDump_fp; + HMODULE module; + + module = LoadLibrary("dbghelp.dll"); + if (!module) + { + fprintf (stderr, "error loading DbgHelp\n"); + return; + } + + MiniDumpWriteDump_fp = (MiniDumpWriteDump_type)GetProcAddress(module, "MiniDumpWriteDump"); + if (!MiniDumpWriteDump_fp) + { + fprintf (stderr, "error getting the address of MiniDumpWriteDump\n"); + return; + } + + dump_file = CreateFile(minidump_file, + GENERIC_READ | GENERIC_WRITE, + 0, + NULL, + CREATE_ALWAYS, + FILE_FLAG_BACKUP_SEMANTICS, + NULL); + if (dump_file == INVALID_HANDLE_VALUE) + { + fprintf (stderr, "error opening file\n"); + return; + } + + process = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ | PROCESS_TERMINATE, + FALSE, + pid); + if (dump_file == INVALID_HANDLE_VALUE) + { + fprintf (stderr, "error opening process\n"); + return; + } + + BOOL success = (*MiniDumpWriteDump_fp)(process, + pid, + dump_file, + dump_type, + NULL, + NULL, + NULL); + if (success) + { + if (verbose) + printf ("minidump created successfully\n"); + } + else + { + fprintf (stderr, "error creating minidump\n"); + } + + /* Unless nokill is given, behave like dumper and terminate the dumped + process */ + if (!nokill) + { + TerminateProcess(process, 128 + 9); + WaitForSingleObject(process, INFINITE); + } + + CloseHandle(process); + CloseHandle(dump_file); + FreeLibrary(module); +} + +static void +usage (FILE *stream, int status) +{ + fprintf (stream, "\ +Usage: %s [OPTION] FILENAME WIN32PID\n\ +\n\ +Write minidump from WIN32PID to FILENAME.dmp\n\ +\n\ + -t, --type minidump type flags\n\ + -n, --nokill don't terminate the dumped process\n\ + -d, --verbose be verbose while dumping\n\ + -h, --help output help information and exit\n\ + -q, --quiet be quiet while dumping (default)\n\ + -V, --version output version information and exit\n\ +\n", program_invocation_short_name); + exit (status); +} + +struct option longopts[] = { + {"type", required_argument, NULL, 't'}, + {"nokill", no_argument, NULL, 'n'}, + {"verbose", no_argument, NULL, 'd'}, + {"help", no_argument, NULL, 'h'}, + {"quiet", no_argument, NULL, 'q'}, + {"version", no_argument, 0, 'V'}, + {0, no_argument, NULL, 0} +}; +const char *opts = "tndhqV"; + +static void +print_version () +{ + printf ("minidumper (cygwin) %d.%d.%d\n" + "Minidump write for Cygwin\n" + "Copyright (C) 1999 - %s Red Hat, Inc.\n" + "This is free software; see the source for copying conditions. There is NO\n" + "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n", + CYGWIN_VERSION_DLL_MAJOR / 1000, + CYGWIN_VERSION_DLL_MAJOR % 1000, + CYGWIN_VERSION_DLL_MINOR, + strrchr (__DATE__, ' ') + 1); +} + +int +main (int argc, char **argv) +{ + int opt; + const char *p = ""; + DWORD pid; + MINIDUMP_TYPE dump_type = 0; // MINIDUMP_NORMAL + + while ((opt = getopt_long (argc, argv, opts, longopts, NULL) ) != EOF) + switch (opt) + { + case 't': + { + char *endptr; + dump_type = strtoul(optarg, &endptr, 0); + if (*endptr != '\0') + { + fprintf (stderr, "syntax error in minidump type \"%s\" near character #%d.\n", optarg, (int) (endptr - optarg)); + exit(1); + } + } + break; + case 'n': + nokill = TRUE; + break; + case 'd': + verbose = TRUE; + break; + case 'q': + verbose = FALSE; + break; + case 'h': + usage (stdout, 0); + case 'V': + print_version (); + exit (0); + default: + fprintf (stderr, "Try `%s --help' for more information.\n", + program_invocation_short_name); + exit (1); + } + + if (argv && *(argv + optind) && *(argv + optind +1)) + { + ssize_t len = cygwin_conv_path (CCP_POSIX_TO_WIN_A | CCP_RELATIVE, + *(argv + optind), NULL, 0); + char *win32_name = (char *) alloca (len); + cygwin_conv_path (CCP_POSIX_TO_WIN_A | CCP_RELATIVE, *(argv + optind), + win32_name, len); + if ((p = strrchr (win32_name, '\\'))) + p++; + else + p = win32_name; + + pid = strtoul (*(argv + optind + 1), NULL, 10); + } + else + { + usage (stderr, 1); + return -1; + } + + char *minidump_file = (char *) malloc (strlen (p) + sizeof (".dmp")); + if (!minidump_file) + { + fprintf (stderr, "error allocating memory\n"); + return -1; + } + sprintf (minidump_file, "%s.dmp", p); + + if (verbose) + printf ("dumping process %u to %s using dump type flags 0x%x\n", (unsigned int)pid, minidump_file, (unsigned int)dump_type); + + minidump(pid, dump_type, minidump_file); + + free (minidump_file); +}; |