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Diffstat (limited to 'winsup/utils/strace.cc')
| -rw-r--r-- | winsup/utils/strace.cc | 1059 |
1 files changed, 0 insertions, 1059 deletions
diff --git a/winsup/utils/strace.cc b/winsup/utils/strace.cc deleted file mode 100644 index d8a2ed82b..000000000 --- a/winsup/utils/strace.cc +++ /dev/null @@ -1,1059 +0,0 @@ -/* strace.cc - - Copyright 2000, 2001, 2002, 2003, 2004, 2005 Red Hat Inc. - - Written by Chris Faylor <cgf@redhat.com> - -This file is part of Cygwin. - -This software is a copyrighted work licensed under the terms of the -Cygwin license. Please consult the file "CYGWIN_LICENSE" for -details. */ - -#define cygwin_internal cygwin_internal_dontuse -#include <stdio.h> -#include <fcntl.h> -#include <getopt.h> -#include <stdarg.h> -#include <string.h> -#include <stdlib.h> -#include <time.h> -#include <windows.h> -#include <signal.h> -#include <errno.h> -#include "cygwin/include/sys/strace.h" -#include "cygwin/include/sys/cygwin.h" -#include "path.h" -#undef cygwin_internal - -/* we *know* we're being built with GCC */ -#define alloca __builtin_alloca - -// Version string. -static const char version[] = "$Revision$"; - -static const char *pgm; -static int forkdebug = 1; -static int numerror = 1; -static int show_usecs = 1; -static int delta = 1; -static int hhmmss; -static int bufsize; -static int new_window; -static long flush_period; -static int include_hex; -static int quiet = -1; - -static unsigned char strace_active = 1; -static int processes; - -static BOOL close_handle (HANDLE h, DWORD ok); - -#define CloseHandle(h) close_handle(h, 0) - -struct child_list -{ - DWORD id; - HANDLE hproc; - int saw_stars; - char nfields; - long long start_time; - DWORD last_usecs; - struct child_list *next; - child_list ():id (0), hproc (NULL), saw_stars (0), nfields (0), - start_time (0), last_usecs (0), next (NULL) - { - } -}; - -child_list children; - -static void -warn (int geterrno, const char *fmt, ...) -{ - va_list args; - char buf[4096]; - - va_start (args, fmt); - sprintf (buf, "%s: ", pgm); - vsprintf (strchr (buf, '\0'), fmt, args); - if (geterrno) - perror (buf); - else - { - fputs (buf, stderr); - fputs ("\n", stderr); - } -} - -static void __attribute__ ((noreturn)) -error (int geterrno, const char *fmt, ...) -{ - va_list args; - char buf[4096]; - - va_start (args, fmt); - sprintf (buf, "%s: ", pgm); - vsprintf (strchr (buf, '\0'), fmt, args); - if (geterrno) - perror (buf); - else - { - fputs (buf, stderr); - fputs ("\n", stderr); - } - exit (1); -} - -DWORD lastid = 0; -HANDLE lasth; - -static child_list * -get_child (DWORD id) -{ - child_list *c; - for (c = &children; (c = c->next) != NULL;) - if (c->id == id) - return c; - - return NULL; -} - -static void -add_child (DWORD id, HANDLE hproc) -{ - if (!get_child (id)) - { - child_list *c = children.next; - children.next = (child_list *) calloc (1, sizeof (child_list)); - children.next->next = c; - lastid = children.next->id = id; - lasth = children.next->hproc = hproc; - processes++; - if (!quiet) - fprintf (stderr, "Windows process %d attached\n", id); - } -} - -static void -remove_child (DWORD id) -{ - child_list *c; - if (id == lastid) - lastid = 0; - for (c = &children; c->next != NULL; c = c->next) - if (c->next->id == id) - { - child_list *c1 = c->next; - c->next = c1->next; - free (c1); - if (!quiet) - fprintf (stderr, "Windows process %d detached\n", id); - processes--; - return; - } - - error (0, "no process id %d found", id); -} - -#define LINE_BUF_CHUNK 128 - -class linebuf -{ - size_t alloc; -public: - size_t ix; - char *buf; - linebuf () - { - ix = 0; - alloc = 0; - buf = NULL; - } - ~linebuf () - { - if (buf) - free (buf); - } - void add (const char *what, int len); - void add (const char *what) - { - add (what, strlen (what)); - } - void prepend (const char *what, int len); -}; - -void -linebuf::add (const char *what, int len) -{ - size_t newix; - if ((newix = ix + len) >= alloc) - { - alloc += LINE_BUF_CHUNK + len; - buf = (char *) realloc (buf, alloc + 1); - } - memcpy (buf + ix, what, len); - ix = newix; - buf[ix] = '\0'; -} - -void -linebuf::prepend (const char *what, int len) -{ - int buflen; - size_t newix; - if ((newix = ix + len) >= alloc) - { - alloc += LINE_BUF_CHUNK + len; - buf = (char *) realloc (buf, alloc + 1); - buf[ix] = '\0'; - } - if ((buflen = strlen (buf))) - memmove (buf + len, buf, buflen + 1); - else - buf[newix] = '\0'; - memcpy (buf, what, len); - ix = newix; -} - -static void -make_command_line (linebuf & one_line, char **argv) -{ - for (; *argv; argv++) - { - char *p = NULL; - const char *a = *argv; - - int len = strlen (a); - if (len != 0 && !(p = strpbrk (a, " \t\n\r\""))) - one_line.add (a, len); - else - { - one_line.add ("\"", 1); - for (; p; a = p, p = strchr (p, '"')) - { - one_line.add (a, ++p - a); - if (p[-1] == '"') - one_line.add ("\"", 1); - } - if (*a) - one_line.add (a); - one_line.add ("\"", 1); - } - one_line.add (" ", 1); - } - - if (one_line.ix) - one_line.buf[one_line.ix - 1] = '\0'; - else - one_line.add ("", 1); -} - -static DWORD child_pid; - -static BOOL WINAPI -ctrl_c (DWORD) -{ - static int tic = 1; - if ((tic ^= 1) && !GenerateConsoleCtrlEvent (CTRL_C_EVENT, 0)) - error (0, "couldn't send CTRL-C to child, win32 error %d\n", - GetLastError ()); - return TRUE; -} - -extern "C" { -unsigned long (*cygwin_internal) (int, ...); -}; - -static int -load_cygwin () -{ - static HMODULE h; - - if (cygwin_internal) - return 1; - - if (h) - return 0; - - if (!(h = LoadLibrary ("cygwin1.dll"))) - { - errno = ENOENT; - return 0; - } - if (!(cygwin_internal = (DWORD (*) (int, ...)) GetProcAddress (h, "cygwin_internal"))) - { - errno = ENOSYS; - return 0; - } - return 1; -} - -static void -attach_process (pid_t pid) -{ - child_pid = (DWORD) cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); - if (!child_pid) - child_pid = pid; - - if (!DebugActiveProcess (child_pid)) - error (0, "couldn't attach to pid %d for debugging", child_pid); - - return; -} - - -static void -create_child (char **argv) -{ - linebuf one_line; - - STARTUPINFO si; - PROCESS_INFORMATION pi; - BOOL ret; - DWORD flags; - - *argv = cygpath (*argv, NULL); - memset (&si, 0, sizeof (si)); - si.cb = sizeof (si); - - flags = CREATE_DEFAULT_ERROR_MODE - | (forkdebug ? DEBUG_PROCESS : DEBUG_ONLY_THIS_PROCESS); - if (new_window) - flags |= CREATE_NEW_CONSOLE | CREATE_NEW_PROCESS_GROUP; - - make_command_line (one_line, argv); - - SetConsoleCtrlHandler (NULL, 0); - ret = CreateProcess (0, one_line.buf, /* command line */ - NULL, /* Security */ - NULL, /* thread */ - TRUE, /* inherit handles */ - flags, /* start flags */ - NULL, NULL, /* current directory */ - &si, &pi); - if (!ret) - error (0, "error creating process %s, (error %d)", *argv, - GetLastError ()); - - CloseHandle (pi.hThread); - CloseHandle (pi.hProcess); - child_pid = pi.dwProcessId; - SetConsoleCtrlHandler (ctrl_c, 1); -} - -static int -output_winerror (FILE *ofile, char *s) -{ - char *winerr = strstr (s, "Win32 error "); - if (!winerr) - return 0; - - DWORD errnum = atoi (winerr + sizeof ("Win32 error ") - 1); - if (!errnum) - return 0; - - /* - * NOTE: Currently there is no policy for how long the - * the buffers are, and looks like 256 is a smallest one - * (dlfcn.cc). Other than error 1395 (length 213) and - * error 1015 (length 249), the rest are all under 188 - * characters, and so I'll use 189 as the buffer length. - * For those longer error messages, FormatMessage will - * return FALSE, and we'll get the old behaviour such as - * ``Win32 error 1395'' etc. - */ - char buf[4096]; - if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM - | FORMAT_MESSAGE_IGNORE_INSERTS, - NULL, - errnum, - MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT), - (LPTSTR) buf, sizeof (buf), NULL)) - return 0; - - /* Get rid the trailing CR/NL pair. */ - char *p = strchr (buf, '\0'); - p[-2] = '\n'; - p[-1] = '\0'; - - *winerr = '\0'; - fputs (s, ofile); - fputs (buf, ofile); - return 1; -} - -static SYSTEMTIME * -syst (long long t) -{ - FILETIME n; - static SYSTEMTIME st; - long long now = t /*+ ((long long) usecs * 10)*/; - n.dwHighDateTime = now >> 32; - n.dwLowDateTime = now & 0xffffffff; - FileTimeToSystemTime (&n, &st); - return &st; -} - -static void __stdcall -handle_output_debug_string (DWORD id, LPVOID p, unsigned mask, FILE *ofile) -{ - int len; - int special; - char alen[3 + 8 + 1]; - DWORD nbytes; - child_list *child = get_child (id); - if (!child) - error (0, "no process id %d found", id); - HANDLE hchild = child->hproc; -#define INTROLEN (sizeof (alen) - 1) - - if (id == lastid && hchild != lasth) - warn (0, "%p != %p", hchild, lasth); - - alen[INTROLEN] = '\0'; - if (!ReadProcessMemory (hchild, p, alen, INTROLEN, &nbytes)) -#ifndef DEBUGGING - return; -#else - error (0, - "couldn't get message length from subprocess %d<%p>, windows error %d", - id, hchild, GetLastError ()); -#endif - - if (strncmp (alen, "cYg", 3)) - return; - len = (int) strtoul (alen + 3, NULL, 16); - if (!len) - return; - - if (len > 0) - special = 0; - else - { - special = len; - if (special == _STRACE_INTERFACE_ACTIVATE_ADDR || special == _STRACE_CHILD_PID) - len = 17; - } - - char *buf; - buf = (char *) alloca (len + 85) + 20; - - if (!ReadProcessMemory (hchild, ((char *) p) + INTROLEN, buf, len, &nbytes)) - error (0, "couldn't get message from subprocess, windows error %d", - GetLastError ()); - - buf[len] = '\0'; - char *s = strtok (buf, " "); - - unsigned long n = strtoul (s, NULL, 16); - - s = strchr (s, '\0') + 1; - - if (special == _STRACE_CHILD_PID) - { - if (!DebugActiveProcess (n)) - error (0, "couldn't attach to subprocess %d for debugging, " - "windows error %d", n, GetLastError ()); - return; - } - - if (special == _STRACE_INTERFACE_ACTIVATE_ADDR) - { - if (!WriteProcessMemory (hchild, (LPVOID) n, &strace_active, - sizeof (strace_active), &nbytes)) - error (0, "couldn't write strace flag to subprocess at %p, " - "windows error %d", n, GetLastError ()); - return; - } - - char *origs = s; - - if (mask & n) - /* got it */ ; - else if (!(mask & _STRACE_ALL) || (n & _STRACE_NOTALL)) - return; /* This should not be included in "all" output */ - - DWORD dusecs, usecs; - char *ptusec, *ptrest; - - dusecs = strtoul (s, &ptusec, 10); - char *q = ptusec; - while (*q == ' ') - q++; - if (*q != '[') - { - usecs = strtoul (q, &ptrest, 10); - while (*ptrest == ' ') - ptrest++; - } - else - { - ptrest = q; - ptusec = show_usecs ? s : ptrest; - usecs = dusecs; - } - - if (child->saw_stars == 0) - { - FILETIME st; - char *news; - - GetSystemTimeAsFileTime (&st); - FileTimeToLocalFileTime (&st, &st); - child->start_time = st.dwHighDateTime; - child->start_time <<= 32; - child->start_time |= st.dwLowDateTime; - if (*(news = ptrest) != '[') - child->saw_stars = 2; - else - { - child->saw_stars++; - while ((news = strchr (news, ' ')) != NULL && *++news != '*') - child->nfields++; - if (news == NULL) - child->saw_stars++; - else - { - s = news; - child->nfields++; - } - } - } - else if (child->saw_stars < 2) - { - int i; - char *news; - if (*(news = ptrest) != '[') - child->saw_stars = 2; - else - { - for (i = 0; i < child->nfields; i++) - if ((news = strchr (news, ' ')) == NULL) - break; // Should never happen - else - news++; - - if (news == NULL) - child->saw_stars = 2; - else - { - s = news; - if (*s == '*') - { - SYSTEMTIME *st = syst (child->start_time); - fprintf (ofile, - "Date/Time: %d-%02d-%02d %02d:%02d:%02d\n", - st->wYear, st->wMonth, st->wDay, st->wHour, - st->wMinute, st->wSecond); - child->saw_stars++; - } - } - } - } - - long long d = usecs - child->last_usecs; - char intbuf[40]; - - if (child->saw_stars < 2 || s != origs) - /* Nothing */ ; - else if (hhmmss) - { - s = ptrest - 9; - SYSTEMTIME *st = syst (child->start_time + (long long) usecs * 10); - sprintf (s, "%02d:%02d:%02d", st->wHour, st->wMinute, st->wSecond); - *strchr (s, '\0') = ' '; - } - else if (!delta) - s = ptusec; - else - { - s = ptusec; - sprintf (intbuf, "%5d ", (int) d); - int len = strlen (intbuf); - - memcpy ((s -= len), intbuf, len); - } - - if (include_hex) - { - s -= 8; - sprintf (s, "%p", (void *) n); - strchr (s, '\0')[0] = ' '; - } - child->last_usecs = usecs; - if (numerror || !output_winerror (ofile, s)) - fputs (s, ofile); - if (!bufsize) - fflush (ofile); -} - -static DWORD -proc_child (unsigned mask, FILE *ofile, pid_t pid) -{ - DWORD res = 0; - DEBUG_EVENT ev; - time_t cur_time, last_time; - - SetThreadPriority (GetCurrentThread (), THREAD_PRIORITY_HIGHEST); - last_time = time (NULL); - while (1) - { - BOOL debug_event = WaitForDebugEvent (&ev, 1000); - DWORD status = DBG_CONTINUE; - - if (bufsize && flush_period > 0 && - (cur_time = time (NULL)) >= last_time + flush_period) - { - last_time = cur_time; - fflush (ofile); - } - - if (!debug_event) - continue; - - if (pid) - { - (void) cygwin_internal (CW_STRACE_TOGGLE, pid); - pid = 0; - } - - switch (ev.dwDebugEventCode) - { - case CREATE_PROCESS_DEBUG_EVENT: - if (ev.u.CreateProcessInfo.hFile) - CloseHandle (ev.u.CreateProcessInfo.hFile); - add_child (ev.dwProcessId, ev.u.CreateProcessInfo.hProcess); - break; - - case CREATE_THREAD_DEBUG_EVENT: - break; - - case LOAD_DLL_DEBUG_EVENT: - if (ev.u.LoadDll.hFile) - CloseHandle (ev.u.LoadDll.hFile); - break; - - case OUTPUT_DEBUG_STRING_EVENT: - handle_output_debug_string (ev.dwProcessId, - ev.u.DebugString.lpDebugStringData, - mask, ofile); - break; - - case EXIT_PROCESS_DEBUG_EVENT: - res = ev.u.ExitProcess.dwExitCode >> 8; - remove_child (ev.dwProcessId); - break; - case EXCEPTION_DEBUG_EVENT: - if (ev.u.Exception.ExceptionRecord.ExceptionCode != STATUS_BREAKPOINT) - { - status = DBG_EXCEPTION_NOT_HANDLED; - if (ev.u.Exception.dwFirstChance) - fprintf (ofile, "--- Process %u, exception %p at %p\n", ev.dwProcessId, - ev.u.Exception.ExceptionRecord.ExceptionCode, - ev.u.Exception.ExceptionRecord.ExceptionAddress); - } - break; - } - if (!ContinueDebugEvent (ev.dwProcessId, ev.dwThreadId, status)) - error (0, "couldn't continue debug event, windows error %d", - GetLastError ()); - if (!processes) - break; - } - - return res; -} - -static void -dotoggle (pid_t pid) -{ - child_pid = (DWORD) cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid); - if (!child_pid) - { - warn (0, "no such cygwin pid - %d", pid); - child_pid = pid; - } - if (cygwin_internal (CW_STRACE_TOGGLE, child_pid)) - error (0, "failed to toggle tracing for process %d<%d>", pid, child_pid); - - return; -} - -static DWORD -dostrace (unsigned mask, FILE *ofile, pid_t pid, char **argv) -{ - if (!pid) - create_child (argv); - else - attach_process (pid); - - return proc_child (mask, ofile, pid); -} - -typedef struct tag_mask_mnemonic -{ - unsigned long val; - const char *text; -} -mask_mnemonic; - -static const mask_mnemonic mnemonic_table[] = { - {_STRACE_ALL, "all"}, - {_STRACE_FLUSH, "flush"}, - {_STRACE_INHERIT, "inherit"}, - {_STRACE_UHOH, "uhoh"}, - {_STRACE_SYSCALL, "syscall"}, - {_STRACE_STARTUP, "startup"}, - {_STRACE_DEBUG, "debug"}, - {_STRACE_PARANOID, "paranoid"}, - {_STRACE_TERMIOS, "termios"}, - {_STRACE_SELECT, "select"}, - {_STRACE_WM, "wm"}, - {_STRACE_SIGP, "sigp"}, - {_STRACE_MINIMAL, "minimal"}, - {_STRACE_EXITDUMP, "exitdump"}, - {_STRACE_SYSTEM, "system"}, - {_STRACE_NOMUTEX, "nomutex"}, - {_STRACE_MALLOC, "malloc"}, - {_STRACE_THREAD, "thread"}, - {0, NULL} -}; - -static unsigned long -mnemonic2ul (const char *nptr, char **endptr) -{ - // Look up mnemonic in table, return value. - // *endptr = ptr to char that breaks match. - const mask_mnemonic *mnp = mnemonic_table; - - while (mnp->text != NULL) - { - if (strcmp (mnp->text, nptr) == 0) - { - // Found a match. - if (endptr != NULL) - { - *endptr = ((char *) nptr) + strlen (mnp->text); - } - return mnp->val; - } - mnp++; - } - - // Didn't find it. - if (endptr != NULL) - { - *endptr = (char *) nptr; - } - return 0; -} - -static unsigned long -parse_mask (const char *ms, char **endptr) -{ - const char *p = ms; - char *newp; - unsigned long retval = 0, thisval; - const size_t bufsize = 16; - char buffer[bufsize]; - size_t len; - - while (*p != '\0') - { - // First extract the term, terminate it, and lowercase it. - strncpy (buffer, p, bufsize); - buffer[bufsize - 1] = '\0'; - len = strcspn (buffer, "+,\0"); - buffer[len] = '\0'; - strlwr (buffer); - - // Check if this is a mnemonic. We have to do this first or strtoul() - // will false-trigger on anything starting with "a" through "f". - thisval = mnemonic2ul (buffer, &newp); - if (buffer == newp) - { - // This term isn't mnemonic, check if it's hex. - thisval = strtoul (buffer, &newp, 16); - if (newp != buffer + len) - { - // Not hex either, syntax error. - *endptr = (char *) p; - return 0; - } - } - - p += len; - retval += thisval; - - // Handle operators - if (*p == '\0') - break; - if ((*p == '+') || (*p == ',')) - { - // For now these both equate to addition/ORing. Until we get - // fancy and add things like "all-<something>", all we need do is - // continue the looping. - p++; - continue; - } - else - { - // Syntax error - *endptr = (char *) p; - return 0; - } - } - - *endptr = (char *) p; - return retval; -} - -static void -usage (FILE *where = stderr) -{ - fprintf (where, "\ -Usage: %s [OPTIONS] <command-line>\n\ -Usage: %s [OPTIONS] -p <pid>\n\ -Trace system calls and signals\n\ -\n\ - -b, --buffer-size=SIZE set size of output file buffer\n\ - -d, --no-delta don't display the delta-t microsecond timestamp\n\ - -f, --trace-children trace child processes (toggle - default true)\n\ - -h, --help output usage information and exit\n\ - -m, --mask=MASK set message filter mask\n\ - -n, --crack-error-numbers output descriptive text instead of error\n\ - numbers for Windows errors\n\ - -o, --output=FILENAME set output file to FILENAME\n\ - -p, --pid=n attach to executing program with cygwin pid n\n\ - -S, --flush-period=PERIOD flush buffered strace output every PERIOD secs\n\ - -t, --timestamp use an absolute hh:mm:ss timestamp insted of \n\ - the default microsecond timestamp. Implies -d\n\ - -T, --toggle toggle tracing in a process already being\n\ - traced. Requires -p <pid>\n\ - -u, --usecs toggle printing of microseconds timestamp\n\ - -v, --version output version information and exit\n\ - -w, --new-window spawn program under test in a new window\n\ -\n", pgm, pgm); - if ( where == stdout) - fprintf (stdout, "\ - MASK can be any combination of the following mnemonics and/or hex values\n\ - (0x is optional). Combine masks with '+' or ',' like so:\n\ -\n\ - --mask=wm+system,malloc+0x00800\n\ -\n\ - Mnemonic Hex Corresponding Def Description\n\ - =========================================================================\n\ - all 0x00001 (_STRACE_ALL) All strace messages.\n\ - flush 0x00002 (_STRACE_FLUSH) Flush output buffer after each message.\n\ - inherit 0x00004 (_STRACE_INHERIT) Children inherit mask from parent.\n\ - uhoh 0x00008 (_STRACE_UHOH) Unusual or weird phenomenon.\n\ - syscall 0x00010 (_STRACE_SYSCALL) System calls.\n\ - startup 0x00020 (_STRACE_STARTUP) argc/envp printout at startup.\n\ - debug 0x00040 (_STRACE_DEBUG) Info to help debugging. \n\ - paranoid 0x00080 (_STRACE_PARANOID) Paranoid info.\n\ - termios 0x00100 (_STRACE_TERMIOS) Info for debugging termios stuff.\n\ - select 0x00200 (_STRACE_SELECT) Info on ugly select internals.\n\ - wm 0x00400 (_STRACE_WM) Trace Windows msgs (enable _strace_wm).\n\ - sigp 0x00800 (_STRACE_SIGP) Trace signal and process handling.\n\ - minimal 0x01000 (_STRACE_MINIMAL) Very minimal strace output.\n\ - exitdump 0x04000 (_STRACE_EXITDUMP) Dump strace cache on exit.\n\ - system 0x08000 (_STRACE_SYSTEM) Serious error; goes to console and log.\n\ - nomutex 0x10000 (_STRACE_NOMUTEX) Don't use mutex for synchronization.\n\ - malloc 0x20000 (_STRACE_MALLOC) Trace malloc calls.\n\ - thread 0x40000 (_STRACE_THREAD) Thread-locking calls.\n\ -"); - if (where == stderr) - fprintf (stderr, "Try '%s --help' for more information.\n", pgm); - exit (where == stderr ? 1 : 0 ); -} - -struct option longopts[] = { - {"buffer-size", required_argument, NULL, 'b'}, - {"help", no_argument, NULL, 'h'}, - {"flush-period", required_argument, NULL, 'S'}, - {"hex", no_argument, NULL, 'H'}, - {"mask", required_argument, NULL, 'm'}, - {"new-window", no_argument, NULL, 'w'}, - {"output", required_argument, NULL, 'o'}, - {"no-delta", no_argument, NULL, 'd'}, - {"pid", required_argument, NULL, 'p'}, - {"quiet", no_argument, NULL, 'q'}, - {"timestamp", no_argument, NULL, 't'}, - {"toggle", no_argument, NULL, 'T'}, - {"trace-children", no_argument, NULL, 'f'}, - {"translate-error-numbers", no_argument, NULL, 'n'}, - {"usecs", no_argument, NULL, 'u'}, - {"version", no_argument, NULL, 'v'}, - {NULL, 0, NULL, 0} -}; - -static const char *const opts = "+b:dhHfm:no:p:qS:tTuvw"; - -static void -print_version () -{ - const char *v = strchr (version, ':'); - int len; - if (!v) - { - v = "?"; - len = 1; - } - else - { - v += 2; - len = strchr (v, ' ') - v; - } - printf ("\ -%s (cygwin) %.*s\n\ -System Trace\n\ -Copyright 2000, 2001, 2002, 2003, 2004, 2005 Red Hat, Inc.\n\ -Compiled on %s\n\ -", pgm, len, v, __DATE__); -} - -int -main (int argc, char **argv) -{ - unsigned mask = 0; - FILE *ofile = NULL; - pid_t pid = 0; - int opt; - int toggle = 0; - int sawquiet = -1; - - if (load_cygwin ()) - { - char **av = (char **) cygwin_internal (CW_ARGV); - if (av && (DWORD) av != (DWORD) -1) - for (argc = 0, argv = av; *av; av++) - argc++; - } - - if (!(pgm = strrchr (*argv, '\\')) && !(pgm = strrchr (*argv, '/'))) - pgm = *argv; - else - pgm++; - - while ((opt = getopt_long (argc, argv, opts, longopts, NULL)) != EOF) - switch (opt) - { - case 'b': - bufsize = atoi (optarg); - break; - case 'd': - delta ^= 1; - break; - case 'f': - forkdebug ^= 1; - break; - case 'h': - // Print help and exit - usage (stdout); - break; - case 'H': - include_hex ^= 1; - break; - case 'm': - { - char *endptr; - mask = parse_mask (optarg, &endptr); - if (*endptr != '\0') - { - // Bad mask expression. - error (0, "syntax error in mask expression \"%s\" near \ -character #%d.\n", optarg, (int) (endptr - optarg), endptr); - } - break; - } - case 'n': - numerror ^= 1; - break; - case 'o': - if ((ofile = fopen (cygpath (optarg, NULL), "w")) == NULL) - error (1, "can't open %s", optarg); -#ifdef F_SETFD - (void) fcntl (fileno (ofile), F_SETFD, 0); -#endif - break; - case 'p': - pid = strtoul (optarg, NULL, 10); - strace_active |= 2; - break; - case 'q': - if (sawquiet < 0) - sawquiet = 1; - else - sawquiet ^= 1; - break; - case 'S': - flush_period = strtoul (optarg, NULL, 10); - break; - case 't': - hhmmss ^= 1; - break; - case 'T': - toggle ^= 1; - break; - case 'u': - // FIXME: currently unimplemented - show_usecs ^= 1; - delta ^= 1; - break; - case 'v': - // Print version info and exit - print_version (); - return 0; - case 'w': - new_window ^= 1; - break; - case '?': - fprintf (stderr, "Try '%s --help' for more information.\n", pgm); - exit (1); - } - - if (pid && argv[optind]) - error (0, "cannot provide both a command line and a process id"); - - if (!pid && !argv[optind]) - error (0, "must provide either a command line or a process id"); - - if (toggle && !pid) - error (0, "must provide a process id to toggle tracing"); - - if (!pid) - quiet = sawquiet < 0 || !sawquiet; - else if (sawquiet < 0) - quiet = 0; - else - quiet = sawquiet; - - if (!mask) - mask = _STRACE_ALL; - - if (bufsize) - setvbuf (ofile, (char *) alloca (bufsize), _IOFBF, bufsize); - - if (!ofile) - ofile = stdout; - - DWORD res = 0; - if (toggle) - dotoggle (pid); - else - res = dostrace (mask, ofile, pid, argv + optind); - return res; -} - -#undef CloseHandle - -static BOOL -close_handle (HANDLE h, DWORD ok) -{ - child_list *c; - for (c = &children; (c = c->next) != NULL;) - if (c->hproc == h && c->id != ok) - error (0, "Closing child handle %p", h); - return CloseHandle (h); -} |