diff options
Diffstat (limited to 'winsup/cygwin/pinfo.cc')
| -rw-r--r-- | winsup/cygwin/pinfo.cc | 400 |
1 files changed, 0 insertions, 400 deletions
diff --git a/winsup/cygwin/pinfo.cc b/winsup/cygwin/pinfo.cc deleted file mode 100644 index 0d7e785..0000000 --- a/winsup/cygwin/pinfo.cc +++ /dev/null @@ -1,400 +0,0 @@ -/* pinfo.cc: process table support - - Copyright 1996, 1997, 1998, 2000 Cygnus Solutions. - -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. */ - -#include "winsup.h" -#include <stdlib.h> -#include <time.h> -#include <errno.h> -#include <limits.h> -#include "fhandler.h" -#include "dtable.h" -#include "cygerrno.h" -#include "thread.h" -#include "sync.h" -#include "sigproc.h" -#include "pinfo.h" - -static char NO_COPY pinfo_dummy[sizeof(pinfo)] = {0}; - -pinfo NO_COPY myself ((_pinfo *)&pinfo_dummy); // Avoid myself != NULL checks - -/* Initialize the process table. - This is done once when the dll is first loaded. */ - -void __stdcall -set_myself (pid_t pid, HANDLE h) -{ - DWORD winpid = GetCurrentProcessId (); - if (pid == 1) - pid = cygwin_pid (winpid); - myself.init (pid, 1, h); - myself->dwProcessId = winpid; - myself->process_state |= PID_IN_USE; - myself->start_time = time (NULL); /* Register our starting time. */ - - char buf[30]; - __small_sprintf (buf, "cYg%8x %x", _STRACE_INTERFACE_ACTIVATE_ADDR, - &strace.active); - OutputDebugString (buf); - - (void) GetModuleFileName (NULL, myself->progname, - sizeof(myself->progname)); - if (strace.active) - { - extern char osname[]; - strace.prntf (1, NULL, "**********************************************"); - strace.prntf (1, NULL, "Program name: %s", myself->progname); - strace.prntf (1, NULL, "App version: %d.%d, api: %d.%d", - user_data->dll_major, user_data->dll_minor, - user_data->api_major, user_data->api_minor); - strace.prntf (1, NULL, "DLL version: %d.%d, api: %d.%d", - cygwin_version.dll_major, cygwin_version.dll_minor, - cygwin_version.api_major, cygwin_version.api_minor); - strace.prntf (1, NULL, "DLL build: %s", cygwin_version.dll_build_date); - strace.prntf (1, NULL, "OS version: Windows %s", osname); - strace.prntf (1, NULL, "**********************************************"); - } - - return; -} - -/* Initialize the process table entry for the current task. - This is not called for fork'd tasks, only exec'd ones. */ -void __stdcall -pinfo_init (LPBYTE info) -{ - if (info != NULL) - { - /* The process was execed. Reuse entry from the original - owner of this pid. */ - environ_init (0); /* Needs myself but affects calls below */ - - /* spawn has already set up a pid structure for us so we'll use that */ - - myself->process_state |= PID_CYGPARENT; - - /* Inherit file descriptor information from parent in info. - */ - LPBYTE b = fdtab.de_linearize_fd_array (info); - extern char title_buf[]; - if (b && *b) - old_title = strcpy (title_buf, (char *)b); - } - else - { - /* Invent our own pid. */ - - set_myself (1); - myself->ppid = 1; - myself->pgid = myself->sid = myself->pid; - myself->ctty = -1; - myself->uid = USHRT_MAX; - - environ_init (0); /* call after myself has been set up */ - } - - debug_printf ("pid %d, pgid %d", myself->pid, myself->pgid); -} - -struct sigaction& -_pinfo::getsig(int sig) -{ -#ifdef _MT_SAFE - if ( thread2signal ) - return thread2signal->sigs[sig]; - return sigs[sig]; -#else - return sigs[sig]; -#endif -}; - -sigset_t& -_pinfo::getsigmask () -{ -#ifdef _MT_SAFE - if ( thread2signal ) - return *thread2signal->sigmask; - return sig_mask; -#else - return sig_mask; -#endif -}; - -void -_pinfo::setsigmask (sigset_t _mask) -{ -#ifdef _MT_SAFE - if ( thread2signal ) - *(thread2signal->sigmask) = _mask; - sig_mask=_mask; -#else - sig_mask=_mask; -#endif -} - -LONG * -_pinfo::getsigtodo(int sig) -{ -#ifdef _MT_SAFE - if ( thread2signal ) - return thread2signal->sigtodo + __SIGOFFSET + sig; - return _sigtodo + __SIGOFFSET + sig; -#else - return _sigtodo + __SIGOFFSET + sig; -#endif -} - -extern HANDLE hMainThread; - -HANDLE -_pinfo::getthread2signal() -{ -#ifdef _MT_SAFE - if ( thread2signal ) - return thread2signal->win32_obj_id; - return hMainThread; -#else - return hMainThread; -#endif -} - -void -_pinfo::setthread2signal(void *_thr) -{ -#ifdef _MT_SAFE - // assert has myself lock - thread2signal=(ThreadItem*)_thr; -#else -#endif -} - -void -_pinfo::copysigs(_pinfo *_other) -{ - sigs = _other->sigs; -} - -void -_pinfo::record_death () -{ - /* CGF FIXME - needed? */ - if (dwProcessId == GetCurrentProcessId () && !my_parent_is_alive ()) - { - process_state = PID_NOT_IN_USE; - hProcess = NULL; - } -} - -void -pinfo::init (pid_t n, DWORD create, HANDLE in_h) -{ - if (n == myself->pid) - { - procinfo = myself; - destroy = 0; - h = NULL; - return; - } - - int created; - char mapname[MAX_PATH]; - __small_sprintf (mapname, "cygpid.%x", n); - - int mapsize; - if (create & PID_EXECED) - mapsize = PINFO_REDIR_SIZE; - else - mapsize = sizeof (_pinfo); - - if (in_h) - { - h = in_h; - created = 0; - } - else if (!create) - { - /* CGF FIXME -- deal with inheritance after an exec */ - h = OpenFileMappingA (FILE_MAP_READ | FILE_MAP_WRITE, FALSE, mapname); - created = 0; - } - else - { - h = CreateFileMapping ((HANDLE) 0xffffffff, &sec_all_nih, - PAGE_READWRITE, 0, mapsize, mapname); - created = h && GetLastError () != ERROR_ALREADY_EXISTS; - } - - if (!h) - { - if (create) - __seterrno (); - procinfo = NULL; - return; - } - - ProtectHandle1 (h, pinfo_shared_handle); - procinfo = (_pinfo *) MapViewOfFile (h, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, 0); - - if (procinfo->process_state & PID_EXECED) - { - pid_t realpid = procinfo->pid; - debug_printf ("execed process windows pid %d, cygwin pid %d", n, realpid); - release (); - if (realpid == n) - api_fatal ("retrieval of execed process info for pid %d failed due to recursion.", n); - return init (realpid); - } - - if (created) - { - if (!(create & PID_EXECED)) - procinfo->pid = n; - else - { - procinfo->pid = myself->pid; - procinfo->process_state |= PID_IN_USE | PID_EXECED; - } - } - - destroy = 1; -} -void -pinfo::release () -{ - if (h) - { -#ifdef DEBUGGING - if (((DWORD) procinfo & 0x77000000) == 0x61000000) try_to_debug (); -#endif - UnmapViewOfFile (procinfo); - ForceCloseHandle1 (h, pinfo_shared_handle); - h = NULL; - } -} - -/* DOCTOOL-START - -<sect1 id="func-cygwin-winpid-to-pid"> - <title>cygwin_winpid_to_pid</title> - - <funcsynopsis> - <funcdef>extern "C" pid_t - <function>cygwin_winpid_to_pid</function> - </funcdef> - <paramdef>int <parameter>winpid</parameter></paramdef> - </funcsynopsis> - - <para>Given a windows pid, converts to the corresponding Cygwin -pid, if any. Returns -1 if windows pid does not correspond to -a cygwin pid.</para> - <example> - <title>Example use of cygwin_winpid_to_pid</title> - <programlisting> - extern "C" cygwin_winpid_to_pid (int winpid); - pid_t mypid; - mypid = cygwin_winpid_to_pid (windows_pid); - </programlisting> - </example> -</sect1> - - DOCTOOL-END */ - -extern "C" pid_t -cygwin_winpid_to_pid (int winpid) -{ - pinfo p (winpid); - if (p) - return p->pid; - - set_errno (ESRCH); - return (pid_t) -1; -} - -#include <tlhelp32.h> -#include <psapi.h> - -typedef BOOL (WINAPI * ENUMPROCESSES) (DWORD *, DWORD, DWORD *); -typedef HANDLE (WINAPI * CREATESNAPSHOT) (DWORD, DWORD); -typedef BOOL (WINAPI * PROCESSWALK) (HANDLE, LPPROCESSENTRY32); -typedef BOOL (WINAPI * CLOSESNAPSHOT) (HANDLE); - -static NO_COPY CREATESNAPSHOT myCreateToolhelp32Snapshot = NULL; -static NO_COPY PROCESSWALK myProcess32First = NULL; -static NO_COPY PROCESSWALK myProcess32Next = NULL; -static BOOL WINAPI enum_init (DWORD *lpidProcess, DWORD cb, DWORD *cbneeded); - -static NO_COPY ENUMPROCESSES myEnumProcesses = enum_init; - -static BOOL WINAPI -EnumProcessesW95 (DWORD *lpidProcess, DWORD cb, DWORD *cbneeded) -{ - HANDLE h; - - *cbneeded = 0; - h = myCreateToolhelp32Snapshot (TH32CS_SNAPPROCESS, 0); - if (!h) - return 0; - - PROCESSENTRY32 proc; - int i = 0; - proc.dwSize = sizeof (proc); - if (myProcess32First(h, &proc)) - do - lpidProcess[i++] = cygwin_pid (proc.th32ProcessID); - while (myProcess32Next (h, &proc)); - CloseHandle (h); - if (i == 0) - return 0; - *cbneeded = i * sizeof (DWORD); - return 1; -} - -void -winpids::init () -{ - DWORD n; - if (!myEnumProcesses (pidlist, sizeof (pidlist) / sizeof (pidlist[0]), &n)) - npids = 0; - else - npids = n / sizeof (pidlist[0]); - - pidlist[npids] = 0; -} - -static BOOL WINAPI -enum_init (DWORD *lpidProcess, DWORD cb, DWORD *cbneeded) -{ - HINSTANCE h; - if (os_being_run == winNT) - { - h = LoadLibrary ("psapi.dll"); - if (!h) - return 0; - myEnumProcesses = (ENUMPROCESSES) GetProcAddress (h, "EnumProcesses"); - if (!myEnumProcesses) - return 0; - } - else - { - h = GetModuleHandle("kernel32.dll"); - myCreateToolhelp32Snapshot = (CREATESNAPSHOT) - GetProcAddress(h, "CreateToolhelp32Snapshot"); - myProcess32First = (PROCESSWALK) - GetProcAddress(h, "Process32First"); - myProcess32Next = (PROCESSWALK) - GetProcAddress(h, "Process32Next"); - if (!myCreateToolhelp32Snapshot || !myProcess32First || !myProcess32Next) - return 0; - - myEnumProcesses = EnumProcessesW95; - } - - return myEnumProcesses (lpidProcess, cb, cbneeded); -} |