/* Utility and Unix shadow routines for GNU Emacs on the Microsoft W32 API. Copyright (C) 1994-1995, 2000-2011 Free Software Foundation, Inc. This file is part of GNU Emacs. GNU Emacs 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 3 of the License, or (at your option) any later version. GNU Emacs 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 for more details. You should have received a copy of the GNU General Public License along with GNU Emacs. If not, see . */ /* Geoff Voelker (voelker@cs.washington.edu) 7-29-94 */ #include /* for offsetof */ #include #include #include /* for DBL_EPSILON */ #include #include #include #include #include #include #include #include #include /* for _mbspbrk */ #include #include #include /* must include CRT headers *before* config.h */ #include #undef access #undef chdir #undef chmod #undef creat #undef ctime #undef fopen #undef link #undef mkdir #undef mktemp #undef open #undef rename #undef rmdir #undef unlink #undef close #undef dup #undef dup2 #undef pipe #undef read #undef write #undef strerror #undef localtime #include "lisp.h" #include #include #ifdef __GNUC__ #define _ANONYMOUS_UNION #define _ANONYMOUS_STRUCT #endif #include /* Some versions of compiler define MEMORYSTATUSEX, some don't, so we use a different name to avoid compilation problems. */ typedef struct _MEMORY_STATUS_EX { DWORD dwLength; DWORD dwMemoryLoad; DWORDLONG ullTotalPhys; DWORDLONG ullAvailPhys; DWORDLONG ullTotalPageFile; DWORDLONG ullAvailPageFile; DWORDLONG ullTotalVirtual; DWORDLONG ullAvailVirtual; DWORDLONG ullAvailExtendedVirtual; } MEMORY_STATUS_EX,*LPMEMORY_STATUS_EX; #include #include #include #include #include #if !defined(__MINGW32__) || __W32API_MAJOR_VERSION < 3 || (__W32API_MAJOR_VERSION == 3 && __W32API_MINOR_VERSION < 15) /* This either is not in psapi.h or guarded by higher value of _WIN32_WINNT than what we use. w32api supplied with MinGW 3.15 defines it in psapi.h */ typedef struct _PROCESS_MEMORY_COUNTERS_EX { DWORD cb; DWORD PageFaultCount; DWORD PeakWorkingSetSize; DWORD WorkingSetSize; DWORD QuotaPeakPagedPoolUsage; DWORD QuotaPagedPoolUsage; DWORD QuotaPeakNonPagedPoolUsage; DWORD QuotaNonPagedPoolUsage; DWORD PagefileUsage; DWORD PeakPagefileUsage; DWORD PrivateUsage; } PROCESS_MEMORY_COUNTERS_EX,*PPROCESS_MEMORY_COUNTERS_EX; #endif /* TCP connection support. */ #include #undef socket #undef bind #undef connect #undef htons #undef ntohs #undef inet_addr #undef gethostname #undef gethostbyname #undef getservbyname #undef getpeername #undef shutdown #undef setsockopt #undef listen #undef getsockname #undef accept #undef recvfrom #undef sendto #include "w32.h" #include "ndir.h" #include "w32heap.h" #include "systime.h" #include "dispextern.h" /* for xstrcasecmp */ #include "coding.h" /* for Vlocale_coding_system */ #include "careadlinkat.h" #include "allocator.h" /* For serial_configure and serial_open. */ #include "process.h" typedef HRESULT (WINAPI * ShGetFolderPath_fn) (IN HWND, IN int, IN HANDLE, IN DWORD, OUT char *); Lisp_Object QCloaded_from; void globals_of_w32 (void); static DWORD get_rid (PSID); /* Initialization states. WARNING: If you add any more such variables for additional APIs, you MUST add initialization for them to globals_of_w32 below. This is because these variables might get set to non-NULL values during dumping, but the dumped Emacs cannot reuse those values, because it could be run on a different version of the OS, where API addresses are different. */ static BOOL g_b_init_is_windows_9x; static BOOL g_b_init_open_process_token; static BOOL g_b_init_get_token_information; static BOOL g_b_init_lookup_account_sid; static BOOL g_b_init_get_sid_sub_authority; static BOOL g_b_init_get_sid_sub_authority_count; static BOOL g_b_init_get_file_security; static BOOL g_b_init_get_security_descriptor_owner; static BOOL g_b_init_get_security_descriptor_group; static BOOL g_b_init_is_valid_sid; static BOOL g_b_init_create_toolhelp32_snapshot; static BOOL g_b_init_process32_first; static BOOL g_b_init_process32_next; static BOOL g_b_init_open_thread_token; static BOOL g_b_init_impersonate_self; static BOOL g_b_init_revert_to_self; static BOOL g_b_init_get_process_memory_info; static BOOL g_b_init_get_process_working_set_size; static BOOL g_b_init_global_memory_status; static BOOL g_b_init_global_memory_status_ex; static BOOL g_b_init_get_length_sid; static BOOL g_b_init_equal_sid; static BOOL g_b_init_copy_sid; static BOOL g_b_init_get_native_system_info; static BOOL g_b_init_get_system_times; /* BEGIN: Wrapper functions around OpenProcessToken and other functions in advapi32.dll that are only supported in Windows NT / 2k / XP */ /* ** Function pointer typedefs ** */ typedef BOOL (WINAPI * OpenProcessToken_Proc) ( HANDLE ProcessHandle, DWORD DesiredAccess, PHANDLE TokenHandle); typedef BOOL (WINAPI * GetTokenInformation_Proc) ( HANDLE TokenHandle, TOKEN_INFORMATION_CLASS TokenInformationClass, LPVOID TokenInformation, DWORD TokenInformationLength, PDWORD ReturnLength); typedef BOOL (WINAPI * GetProcessTimes_Proc) ( HANDLE process_handle, LPFILETIME creation_time, LPFILETIME exit_time, LPFILETIME kernel_time, LPFILETIME user_time); GetProcessTimes_Proc get_process_times_fn = NULL; #ifdef _UNICODE const char * const LookupAccountSid_Name = "LookupAccountSidW"; const char * const GetFileSecurity_Name = "GetFileSecurityW"; #else const char * const LookupAccountSid_Name = "LookupAccountSidA"; const char * const GetFileSecurity_Name = "GetFileSecurityA"; #endif typedef BOOL (WINAPI * LookupAccountSid_Proc) ( LPCTSTR lpSystemName, PSID Sid, LPTSTR Name, LPDWORD cbName, LPTSTR DomainName, LPDWORD cbDomainName, PSID_NAME_USE peUse); typedef PDWORD (WINAPI * GetSidSubAuthority_Proc) ( PSID pSid, DWORD n); typedef PUCHAR (WINAPI * GetSidSubAuthorityCount_Proc) ( PSID pSid); typedef BOOL (WINAPI * GetFileSecurity_Proc) ( LPCTSTR lpFileName, SECURITY_INFORMATION RequestedInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor, DWORD nLength, LPDWORD lpnLengthNeeded); typedef BOOL (WINAPI * GetSecurityDescriptorOwner_Proc) ( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID *pOwner, LPBOOL lpbOwnerDefaulted); typedef BOOL (WINAPI * GetSecurityDescriptorGroup_Proc) ( PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID *pGroup, LPBOOL lpbGroupDefaulted); typedef BOOL (WINAPI * IsValidSid_Proc) ( PSID sid); typedef HANDLE (WINAPI * CreateToolhelp32Snapshot_Proc) ( DWORD dwFlags, DWORD th32ProcessID); typedef BOOL (WINAPI * Process32First_Proc) ( HANDLE hSnapshot, LPPROCESSENTRY32 lppe); typedef BOOL (WINAPI * Process32Next_Proc) ( HANDLE hSnapshot, LPPROCESSENTRY32 lppe); typedef BOOL (WINAPI * OpenThreadToken_Proc) ( HANDLE ThreadHandle, DWORD DesiredAccess, BOOL OpenAsSelf, PHANDLE TokenHandle); typedef BOOL (WINAPI * ImpersonateSelf_Proc) ( SECURITY_IMPERSONATION_LEVEL ImpersonationLevel); typedef BOOL (WINAPI * RevertToSelf_Proc) (void); typedef BOOL (WINAPI * GetProcessMemoryInfo_Proc) ( HANDLE Process, PPROCESS_MEMORY_COUNTERS ppsmemCounters, DWORD cb); typedef BOOL (WINAPI * GetProcessWorkingSetSize_Proc) ( HANDLE hProcess, DWORD * lpMinimumWorkingSetSize, DWORD * lpMaximumWorkingSetSize); typedef BOOL (WINAPI * GlobalMemoryStatus_Proc) ( LPMEMORYSTATUS lpBuffer); typedef BOOL (WINAPI * GlobalMemoryStatusEx_Proc) ( LPMEMORY_STATUS_EX lpBuffer); typedef BOOL (WINAPI * CopySid_Proc) ( DWORD nDestinationSidLength, PSID pDestinationSid, PSID pSourceSid); typedef BOOL (WINAPI * EqualSid_Proc) ( PSID pSid1, PSID pSid2); typedef DWORD (WINAPI * GetLengthSid_Proc) ( PSID pSid); typedef void (WINAPI * GetNativeSystemInfo_Proc) ( LPSYSTEM_INFO lpSystemInfo); typedef BOOL (WINAPI * GetSystemTimes_Proc) ( LPFILETIME lpIdleTime, LPFILETIME lpKernelTime, LPFILETIME lpUserTime); /* ** A utility function ** */ static BOOL is_windows_9x (void) { static BOOL s_b_ret = 0; OSVERSIONINFO os_ver; if (g_b_init_is_windows_9x == 0) { g_b_init_is_windows_9x = 1; ZeroMemory (&os_ver, sizeof (OSVERSIONINFO)); os_ver.dwOSVersionInfoSize = sizeof (OSVERSIONINFO); if (GetVersionEx (&os_ver)) { s_b_ret = (os_ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS); } } return s_b_ret; } /* Get total user and system times for get-internal-run-time. Returns a list of three integers if the times are provided by the OS (NT derivatives), otherwise it returns the result of current-time. */ Lisp_Object w32_get_internal_run_time (void) { if (get_process_times_fn) { FILETIME create, exit, kernel, user; HANDLE proc = GetCurrentProcess (); if ((*get_process_times_fn) (proc, &create, &exit, &kernel, &user)) { LARGE_INTEGER user_int, kernel_int, total; int microseconds; user_int.LowPart = user.dwLowDateTime; user_int.HighPart = user.dwHighDateTime; kernel_int.LowPart = kernel.dwLowDateTime; kernel_int.HighPart = kernel.dwHighDateTime; total.QuadPart = user_int.QuadPart + kernel_int.QuadPart; /* FILETIME is 100 nanosecond increments, Emacs only wants microsecond resolution. */ total.QuadPart /= 10; microseconds = total.QuadPart % 1000000; total.QuadPart /= 1000000; /* Sanity check to make sure we can represent the result. */ if (total.HighPart == 0) { int secs = total.LowPart; return list3 (make_number ((secs >> 16) & 0xffff), make_number (secs & 0xffff), make_number (microseconds)); } } } return Fcurrent_time (); } /* ** The wrapper functions ** */ static BOOL WINAPI open_process_token (HANDLE ProcessHandle, DWORD DesiredAccess, PHANDLE TokenHandle) { static OpenProcessToken_Proc s_pfn_Open_Process_Token = NULL; HMODULE hm_advapi32 = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_open_process_token == 0) { g_b_init_open_process_token = 1; hm_advapi32 = LoadLibrary ("Advapi32.dll"); s_pfn_Open_Process_Token = (OpenProcessToken_Proc) GetProcAddress (hm_advapi32, "OpenProcessToken"); } if (s_pfn_Open_Process_Token == NULL) { return FALSE; } return ( s_pfn_Open_Process_Token ( ProcessHandle, DesiredAccess, TokenHandle) ); } static BOOL WINAPI get_token_information (HANDLE TokenHandle, TOKEN_INFORMATION_CLASS TokenInformationClass, LPVOID TokenInformation, DWORD TokenInformationLength, PDWORD ReturnLength) { static GetTokenInformation_Proc s_pfn_Get_Token_Information = NULL; HMODULE hm_advapi32 = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_get_token_information == 0) { g_b_init_get_token_information = 1; hm_advapi32 = LoadLibrary ("Advapi32.dll"); s_pfn_Get_Token_Information = (GetTokenInformation_Proc) GetProcAddress (hm_advapi32, "GetTokenInformation"); } if (s_pfn_Get_Token_Information == NULL) { return FALSE; } return ( s_pfn_Get_Token_Information ( TokenHandle, TokenInformationClass, TokenInformation, TokenInformationLength, ReturnLength) ); } static BOOL WINAPI lookup_account_sid (LPCTSTR lpSystemName, PSID Sid, LPTSTR Name, LPDWORD cbName, LPTSTR DomainName, LPDWORD cbDomainName, PSID_NAME_USE peUse) { static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid = NULL; HMODULE hm_advapi32 = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_lookup_account_sid == 0) { g_b_init_lookup_account_sid = 1; hm_advapi32 = LoadLibrary ("Advapi32.dll"); s_pfn_Lookup_Account_Sid = (LookupAccountSid_Proc) GetProcAddress (hm_advapi32, LookupAccountSid_Name); } if (s_pfn_Lookup_Account_Sid == NULL) { return FALSE; } return ( s_pfn_Lookup_Account_Sid ( lpSystemName, Sid, Name, cbName, DomainName, cbDomainName, peUse) ); } static PDWORD WINAPI get_sid_sub_authority (PSID pSid, DWORD n) { static GetSidSubAuthority_Proc s_pfn_Get_Sid_Sub_Authority = NULL; static DWORD zero = 0U; HMODULE hm_advapi32 = NULL; if (is_windows_9x () == TRUE) { return &zero; } if (g_b_init_get_sid_sub_authority == 0) { g_b_init_get_sid_sub_authority = 1; hm_advapi32 = LoadLibrary ("Advapi32.dll"); s_pfn_Get_Sid_Sub_Authority = (GetSidSubAuthority_Proc) GetProcAddress ( hm_advapi32, "GetSidSubAuthority"); } if (s_pfn_Get_Sid_Sub_Authority == NULL) { return &zero; } return (s_pfn_Get_Sid_Sub_Authority (pSid, n)); } static PUCHAR WINAPI get_sid_sub_authority_count (PSID pSid) { static GetSidSubAuthorityCount_Proc s_pfn_Get_Sid_Sub_Authority_Count = NULL; static UCHAR zero = 0U; HMODULE hm_advapi32 = NULL; if (is_windows_9x () == TRUE) { return &zero; } if (g_b_init_get_sid_sub_authority_count == 0) { g_b_init_get_sid_sub_authority_count = 1; hm_advapi32 = LoadLibrary ("Advapi32.dll"); s_pfn_Get_Sid_Sub_Authority_Count = (GetSidSubAuthorityCount_Proc) GetProcAddress ( hm_advapi32, "GetSidSubAuthorityCount"); } if (s_pfn_Get_Sid_Sub_Authority_Count == NULL) { return &zero; } return (s_pfn_Get_Sid_Sub_Authority_Count (pSid)); } static BOOL WINAPI get_file_security (LPCTSTR lpFileName, SECURITY_INFORMATION RequestedInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor, DWORD nLength, LPDWORD lpnLengthNeeded) { static GetFileSecurity_Proc s_pfn_Get_File_Security = NULL; HMODULE hm_advapi32 = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_get_file_security == 0) { g_b_init_get_file_security = 1; hm_advapi32 = LoadLibrary ("Advapi32.dll"); s_pfn_Get_File_Security = (GetFileSecurity_Proc) GetProcAddress ( hm_advapi32, GetFileSecurity_Name); } if (s_pfn_Get_File_Security == NULL) { return FALSE; } return (s_pfn_Get_File_Security (lpFileName, RequestedInformation, pSecurityDescriptor, nLength, lpnLengthNeeded)); } static BOOL WINAPI get_security_descriptor_owner (PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID *pOwner, LPBOOL lpbOwnerDefaulted) { static GetSecurityDescriptorOwner_Proc s_pfn_Get_Security_Descriptor_Owner = NULL; HMODULE hm_advapi32 = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_get_security_descriptor_owner == 0) { g_b_init_get_security_descriptor_owner = 1; hm_advapi32 = LoadLibrary ("Advapi32.dll"); s_pfn_Get_Security_Descriptor_Owner = (GetSecurityDescriptorOwner_Proc) GetProcAddress ( hm_advapi32, "GetSecurityDescriptorOwner"); } if (s_pfn_Get_Security_Descriptor_Owner == NULL) { return FALSE; } return (s_pfn_Get_Security_Descriptor_Owner (pSecurityDescriptor, pOwner, lpbOwnerDefaulted)); } static BOOL WINAPI get_security_descriptor_group (PSECURITY_DESCRIPTOR pSecurityDescriptor, PSID *pGroup, LPBOOL lpbGroupDefaulted) { static GetSecurityDescriptorGroup_Proc s_pfn_Get_Security_Descriptor_Group = NULL; HMODULE hm_advapi32 = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_get_security_descriptor_group == 0) { g_b_init_get_security_descriptor_group = 1; hm_advapi32 = LoadLibrary ("Advapi32.dll"); s_pfn_Get_Security_Descriptor_Group = (GetSecurityDescriptorGroup_Proc) GetProcAddress ( hm_advapi32, "GetSecurityDescriptorGroup"); } if (s_pfn_Get_Security_Descriptor_Group == NULL) { return FALSE; } return (s_pfn_Get_Security_Descriptor_Group (pSecurityDescriptor, pGroup, lpbGroupDefaulted)); } static BOOL WINAPI is_valid_sid (PSID sid) { static IsValidSid_Proc s_pfn_Is_Valid_Sid = NULL; HMODULE hm_advapi32 = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_is_valid_sid == 0) { g_b_init_is_valid_sid = 1; hm_advapi32 = LoadLibrary ("Advapi32.dll"); s_pfn_Is_Valid_Sid = (IsValidSid_Proc) GetProcAddress ( hm_advapi32, "IsValidSid"); } if (s_pfn_Is_Valid_Sid == NULL) { return FALSE; } return (s_pfn_Is_Valid_Sid (sid)); } static BOOL WINAPI equal_sid (PSID sid1, PSID sid2) { static EqualSid_Proc s_pfn_Equal_Sid = NULL; HMODULE hm_advapi32 = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_equal_sid == 0) { g_b_init_equal_sid = 1; hm_advapi32 = LoadLibrary ("Advapi32.dll"); s_pfn_Equal_Sid = (EqualSid_Proc) GetProcAddress ( hm_advapi32, "EqualSid"); } if (s_pfn_Equal_Sid == NULL) { return FALSE; } return (s_pfn_Equal_Sid (sid1, sid2)); } static DWORD WINAPI get_length_sid (PSID sid) { static GetLengthSid_Proc s_pfn_Get_Length_Sid = NULL; HMODULE hm_advapi32 = NULL; if (is_windows_9x () == TRUE) { return 0; } if (g_b_init_get_length_sid == 0) { g_b_init_get_length_sid = 1; hm_advapi32 = LoadLibrary ("Advapi32.dll"); s_pfn_Get_Length_Sid = (GetLengthSid_Proc) GetProcAddress ( hm_advapi32, "GetLengthSid"); } if (s_pfn_Get_Length_Sid == NULL) { return 0; } return (s_pfn_Get_Length_Sid (sid)); } static BOOL WINAPI copy_sid (DWORD destlen, PSID dest, PSID src) { static CopySid_Proc s_pfn_Copy_Sid = NULL; HMODULE hm_advapi32 = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_copy_sid == 0) { g_b_init_copy_sid = 1; hm_advapi32 = LoadLibrary ("Advapi32.dll"); s_pfn_Copy_Sid = (CopySid_Proc) GetProcAddress ( hm_advapi32, "CopySid"); } if (s_pfn_Copy_Sid == NULL) { return FALSE; } return (s_pfn_Copy_Sid (destlen, dest, src)); } /* END: Wrapper functions around OpenProcessToken and other functions in advapi32.dll that are only supported in Windows NT / 2k / XP */ static void WINAPI get_native_system_info (LPSYSTEM_INFO lpSystemInfo) { static GetNativeSystemInfo_Proc s_pfn_Get_Native_System_Info = NULL; if (is_windows_9x () != TRUE) { if (g_b_init_get_native_system_info == 0) { g_b_init_get_native_system_info = 1; s_pfn_Get_Native_System_Info = (GetNativeSystemInfo_Proc)GetProcAddress (GetModuleHandle ("kernel32.dll"), "GetNativeSystemInfo"); } if (s_pfn_Get_Native_System_Info != NULL) s_pfn_Get_Native_System_Info (lpSystemInfo); } else lpSystemInfo->dwNumberOfProcessors = -1; } static BOOL WINAPI get_system_times (LPFILETIME lpIdleTime, LPFILETIME lpKernelTime, LPFILETIME lpUserTime) { static GetSystemTimes_Proc s_pfn_Get_System_times = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_get_system_times == 0) { g_b_init_get_system_times = 1; s_pfn_Get_System_times = (GetSystemTimes_Proc)GetProcAddress (GetModuleHandle ("kernel32.dll"), "GetSystemTimes"); } if (s_pfn_Get_System_times == NULL) return FALSE; return (s_pfn_Get_System_times (lpIdleTime, lpKernelTime, lpUserTime)); } /* Equivalent of strerror for W32 error codes. */ char * w32_strerror (int error_no) { static char buf[500]; if (error_no == 0) error_no = GetLastError (); buf[0] = '\0'; if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, error_no, 0, /* choose most suitable language */ buf, sizeof (buf), NULL)) sprintf (buf, "w32 error %u", error_no); return buf; } /* Return 1 if P is a valid pointer to an object of size SIZE. Return 0 if P is NOT a valid pointer. Return -1 if we cannot validate P. This is called from alloc.c:valid_pointer_p. */ int w32_valid_pointer_p (void *p, int size) { SIZE_T done; HANDLE h = OpenProcess (PROCESS_VM_READ, FALSE, GetCurrentProcessId ()); if (h) { unsigned char *buf = alloca (size); int retval = ReadProcessMemory (h, p, buf, size, &done); CloseHandle (h); return retval; } else return -1; } static char startup_dir[MAXPATHLEN]; /* Get the current working directory. */ char * getwd (char *dir) { #if 0 if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) return dir; return NULL; #else /* Emacs doesn't actually change directory itself, and we want to force our real wd to be where emacs.exe is to avoid unnecessary conflicts when trying to rename or delete directories. */ strcpy (dir, startup_dir); return dir; #endif } /* Emulate getloadavg. */ struct load_sample { time_t sample_time; ULONGLONG idle; ULONGLONG kernel; ULONGLONG user; }; /* Number of processors on this machine. */ static unsigned num_of_processors; /* We maintain 1-sec samples for the last 16 minutes in a circular buffer. */ static struct load_sample samples[16*60]; static int first_idx = -1, last_idx = -1; static int max_idx = sizeof (samples) / sizeof (samples[0]); static int buf_next (int from) { int next_idx = from + 1; if (next_idx >= max_idx) next_idx = 0; return next_idx; } static int buf_prev (int from) { int prev_idx = from - 1; if (prev_idx < 0) prev_idx = max_idx - 1; return prev_idx; } static void sample_system_load (ULONGLONG *idle, ULONGLONG *kernel, ULONGLONG *user) { SYSTEM_INFO sysinfo; FILETIME ft_idle, ft_user, ft_kernel; /* Initialize the number of processors on this machine. */ if (num_of_processors <= 0) { get_native_system_info (&sysinfo); num_of_processors = sysinfo.dwNumberOfProcessors; if (num_of_processors <= 0) { GetSystemInfo (&sysinfo); num_of_processors = sysinfo.dwNumberOfProcessors; } if (num_of_processors <= 0) num_of_processors = 1; } /* TODO: Take into account threads that are ready to run, by sampling the "\System\Processor Queue Length" performance counter. The code below accounts only for threads that are actually running. */ if (get_system_times (&ft_idle, &ft_kernel, &ft_user)) { ULARGE_INTEGER uidle, ukernel, uuser; memcpy (&uidle, &ft_idle, sizeof (ft_idle)); memcpy (&ukernel, &ft_kernel, sizeof (ft_kernel)); memcpy (&uuser, &ft_user, sizeof (ft_user)); *idle = uidle.QuadPart; *kernel = ukernel.QuadPart; *user = uuser.QuadPart; } else { *idle = 0; *kernel = 0; *user = 0; } } /* Produce the load average for a given time interval, using the samples in the samples[] array. WHICH can be 0, 1, or 2, meaning 1-minute, 5-minute, or 15-minute average, respectively. */ static double getavg (int which) { double retval = -1.0; double tdiff; int idx; double span = (which == 0 ? 1.0 : (which == 1 ? 5.0 : 15.0)) * 60; time_t now = samples[last_idx].sample_time; if (first_idx != last_idx) { for (idx = buf_prev (last_idx); ; idx = buf_prev (idx)) { tdiff = difftime (now, samples[idx].sample_time); if (tdiff >= span - 2*DBL_EPSILON*now) { long double sys = samples[last_idx].kernel + samples[last_idx].user - (samples[idx].kernel + samples[idx].user); long double idl = samples[last_idx].idle - samples[idx].idle; retval = (1.0 - idl / sys) * num_of_processors; break; } if (idx == first_idx) break; } } return retval; } int getloadavg (double loadavg[], int nelem) { int elem; ULONGLONG idle, kernel, user; time_t now = time (NULL); /* Store another sample. We ignore samples that are less than 1 sec apart. */ if (difftime (now, samples[last_idx].sample_time) >= 1.0 - 2*DBL_EPSILON*now) { sample_system_load (&idle, &kernel, &user); last_idx = buf_next (last_idx); samples[last_idx].sample_time = now; samples[last_idx].idle = idle; samples[last_idx].kernel = kernel; samples[last_idx].user = user; /* If the buffer has more that 15 min worth of samples, discard the old ones. */ if (first_idx == -1) first_idx = last_idx; while (first_idx != last_idx && (difftime (now, samples[first_idx].sample_time) >= 15.0*60 + 2*DBL_EPSILON*now)) first_idx = buf_next (first_idx); } for (elem = 0; elem < nelem; elem++) { double avg = getavg (elem); if (avg < 0) break; loadavg[elem] = avg; } return elem; } /* Emulate getpwuid, getpwnam and others. */ #define PASSWD_FIELD_SIZE 256 static char dflt_passwd_name[PASSWD_FIELD_SIZE]; static char dflt_passwd_passwd[PASSWD_FIELD_SIZE]; static char dflt_passwd_gecos[PASSWD_FIELD_SIZE]; static char dflt_passwd_dir[PASSWD_FIELD_SIZE]; static char dflt_passwd_shell[PASSWD_FIELD_SIZE]; static struct passwd dflt_passwd = { dflt_passwd_name, dflt_passwd_passwd, 0, 0, 0, dflt_passwd_gecos, dflt_passwd_dir, dflt_passwd_shell, }; static char dflt_group_name[GNLEN+1]; static struct group dflt_group = { /* When group information is not available, we return this as the group for all files. */ dflt_group_name, 0, }; unsigned getuid (void) { return dflt_passwd.pw_uid; } unsigned geteuid (void) { /* I could imagine arguing for checking to see whether the user is in the Administrators group and returning a UID of 0 for that case, but I don't know how wise that would be in the long run. */ return getuid (); } unsigned getgid (void) { return dflt_passwd.pw_gid; } unsigned getegid (void) { return getgid (); } struct passwd * getpwuid (unsigned uid) { if (uid == dflt_passwd.pw_uid) return &dflt_passwd; return NULL; } struct group * getgrgid (gid_t gid) { return &dflt_group; } struct passwd * getpwnam (char *name) { struct passwd *pw; pw = getpwuid (getuid ()); if (!pw) return pw; if (xstrcasecmp (name, pw->pw_name)) return NULL; return pw; } static void init_user_info (void) { /* Find the user's real name by opening the process token and looking up the name associated with the user-sid in that token. Use the relative portion of the identifier authority value from the user-sid as the user id value (same for group id using the primary group sid from the process token). */ char uname[UNLEN+1], gname[GNLEN+1], domain[1025]; DWORD ulength = sizeof (uname), dlength = sizeof (domain), needed; DWORD glength = sizeof (gname); HANDLE token = NULL; SID_NAME_USE user_type; unsigned char *buf = NULL; DWORD blen = 0; TOKEN_USER user_token; TOKEN_PRIMARY_GROUP group_token; BOOL result; result = open_process_token (GetCurrentProcess (), TOKEN_QUERY, &token); if (result) { result = get_token_information (token, TokenUser, NULL, 0, &blen); if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) { buf = xmalloc (blen); result = get_token_information (token, TokenUser, (LPVOID)buf, blen, &needed); if (result) { memcpy (&user_token, buf, sizeof (user_token)); result = lookup_account_sid (NULL, user_token.User.Sid, uname, &ulength, domain, &dlength, &user_type); } } else result = FALSE; } if (result) { strcpy (dflt_passwd.pw_name, uname); /* Determine a reasonable uid value. */ if (xstrcasecmp ("administrator", uname) == 0) { dflt_passwd.pw_uid = 500; /* well-known Administrator uid */ dflt_passwd.pw_gid = 513; /* well-known None gid */ } else { /* Use the last sub-authority value of the RID, the relative portion of the SID, as user/group ID. */ dflt_passwd.pw_uid = get_rid (user_token.User.Sid); /* Get group id and name. */ result = get_token_information (token, TokenPrimaryGroup, (LPVOID)buf, blen, &needed); if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) { buf = xrealloc (buf, blen = needed); result = get_token_information (token, TokenPrimaryGroup, (LPVOID)buf, blen, &needed); } if (result) { memcpy (&group_token, buf, sizeof (group_token)); dflt_passwd.pw_gid = get_rid (group_token.PrimaryGroup); dlength = sizeof (domain); /* If we can get at the real Primary Group name, use that. Otherwise, the default group name was already set to "None" in globals_of_w32. */ if (lookup_account_sid (NULL, group_token.PrimaryGroup, gname, &glength, NULL, &dlength, &user_type)) strcpy (dflt_group_name, gname); } else dflt_passwd.pw_gid = dflt_passwd.pw_uid; } } /* If security calls are not supported (presumably because we are running under Windows 9X), fallback to this: */ else if (GetUserName (uname, &ulength)) { strcpy (dflt_passwd.pw_name, uname); if (xstrcasecmp ("administrator", uname) == 0) dflt_passwd.pw_uid = 0; else dflt_passwd.pw_uid = 123; dflt_passwd.pw_gid = dflt_passwd.pw_uid; } else { strcpy (dflt_passwd.pw_name, "unknown"); dflt_passwd.pw_uid = 123; dflt_passwd.pw_gid = 123; } dflt_group.gr_gid = dflt_passwd.pw_gid; /* Ensure HOME and SHELL are defined. */ if (getenv ("HOME") == NULL) abort (); if (getenv ("SHELL") == NULL) abort (); /* Set dir and shell from environment variables. */ strcpy (dflt_passwd.pw_dir, getenv ("HOME")); strcpy (dflt_passwd.pw_shell, getenv ("SHELL")); xfree (buf); if (token) CloseHandle (token); } int random (void) { /* rand () on NT gives us 15 random bits...hack together 30 bits. */ return ((rand () << 15) | rand ()); } void srandom (int seed) { srand (seed); } /* Normalize filename by converting all path separators to the specified separator. Also conditionally convert upper case path name components to lower case. */ static void normalize_filename (register char *fp, char path_sep) { char sep; char *elem; /* Always lower-case drive letters a-z, even if the filesystem preserves case in filenames. This is so filenames can be compared by string comparison functions that are case-sensitive. Even case-preserving filesystems do not distinguish case in drive letters. */ if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') { *fp += 'a' - 'A'; fp += 2; } if (NILP (Vw32_downcase_file_names)) { while (*fp) { if (*fp == '/' || *fp == '\\') *fp = path_sep; fp++; } return; } sep = path_sep; /* convert to this path separator */ elem = fp; /* start of current path element */ do { if (*fp >= 'a' && *fp <= 'z') elem = 0; /* don't convert this element */ if (*fp == 0 || *fp == ':') { sep = *fp; /* restore current separator (or 0) */ *fp = '/'; /* after conversion of this element */ } if (*fp == '/' || *fp == '\\') { if (elem && elem != fp) { *fp = 0; /* temporary end of string */ _strlwr (elem); /* while we convert to lower case */ } *fp = sep; /* convert (or restore) path separator */ elem = fp + 1; /* next element starts after separator */ sep = path_sep; } } while (*fp++); } /* Destructively turn backslashes into slashes. */ void dostounix_filename (register char *p) { normalize_filename (p, '/'); } /* Destructively turn slashes into backslashes. */ void unixtodos_filename (register char *p) { normalize_filename (p, '\\'); } /* Remove all CR's that are followed by a LF. (From msdos.c...probably should figure out a way to share it, although this code isn't going to ever change.) */ static int crlf_to_lf (register int n, register unsigned char *buf) { unsigned char *np = buf; unsigned char *startp = buf; unsigned char *endp = buf + n; if (n == 0) return n; while (buf < endp - 1) { if (*buf == 0x0d) { if (*(++buf) != 0x0a) *np++ = 0x0d; } else *np++ = *buf++; } if (buf < endp) *np++ = *buf++; return np - startp; } /* Parse the root part of file name, if present. Return length and optionally store pointer to char after root. */ static int parse_root (char * name, char ** pPath) { char * start = name; if (name == NULL) return 0; /* find the root name of the volume if given */ if (isalpha (name[0]) && name[1] == ':') { /* skip past drive specifier */ name += 2; if (IS_DIRECTORY_SEP (name[0])) name++; } else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) { int slashes = 2; name += 2; do { if (IS_DIRECTORY_SEP (*name) && --slashes == 0) break; name++; } while ( *name ); if (IS_DIRECTORY_SEP (name[0])) name++; } if (pPath) *pPath = name; return name - start; } /* Get long base name for name; name is assumed to be absolute. */ static int get_long_basename (char * name, char * buf, int size) { WIN32_FIND_DATA find_data; HANDLE dir_handle; int len = 0; /* must be valid filename, no wild cards or other invalid characters */ if (_mbspbrk (name, "*?|<>\"")) return 0; dir_handle = FindFirstFile (name, &find_data); if (dir_handle != INVALID_HANDLE_VALUE) { if ((len = strlen (find_data.cFileName)) < size) memcpy (buf, find_data.cFileName, len + 1); else len = 0; FindClose (dir_handle); } return len; } /* Get long name for file, if possible (assumed to be absolute). */ BOOL w32_get_long_filename (char * name, char * buf, int size) { char * o = buf; char * p; char * q; char full[ MAX_PATH ]; int len; len = strlen (name); if (len >= MAX_PATH) return FALSE; /* Use local copy for destructive modification. */ memcpy (full, name, len+1); unixtodos_filename (full); /* Copy root part verbatim. */ len = parse_root (full, &p); memcpy (o, full, len); o += len; *o = '\0'; size -= len; while (p != NULL && *p) { q = p; p = strchr (q, '\\'); if (p) *p = '\0'; len = get_long_basename (full, o, size); if (len > 0) { o += len; size -= len; if (p != NULL) { *p++ = '\\'; if (size < 2) return FALSE; *o++ = '\\'; size--; *o = '\0'; } } else return FALSE; } return TRUE; } static int is_unc_volume (const char *filename) { const char *ptr = filename; if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) return 0; if (_mbspbrk (ptr + 2, "*?|<>\"\\/")) return 0; return 1; } /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ int sigsetmask (int signal_mask) { return 0; } int sigmask (int sig) { return 0; } int sigblock (int sig) { return 0; } int sigunblock (int sig) { return 0; } int sigemptyset (sigset_t *set) { return 0; } int sigaddset (sigset_t *set, int signo) { return 0; } int sigfillset (sigset_t *set) { return 0; } int sigprocmask (int how, const sigset_t *set, sigset_t *oset) { return 0; } int pthread_sigmask (int how, const sigset_t *set, sigset_t *oset) { if (sigprocmask (how, set, oset) == -1) return EINVAL; return 0; } int setpgrp (int pid, int gid) { return 0; } int alarm (int seconds) { return 0; } #define REG_ROOT "SOFTWARE\\GNU\\Emacs" LPBYTE w32_get_resource (char *key, LPDWORD lpdwtype) { LPBYTE lpvalue; HKEY hrootkey = NULL; DWORD cbData; /* Check both the current user and the local machine to see if we have any resources. */ if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) { lpvalue = NULL; if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) { RegCloseKey (hrootkey); return (lpvalue); } xfree (lpvalue); RegCloseKey (hrootkey); } if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) { lpvalue = NULL; if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) { RegCloseKey (hrootkey); return (lpvalue); } xfree (lpvalue); RegCloseKey (hrootkey); } return (NULL); } char *get_emacs_configuration (void); void init_environment (char ** argv) { static const char * const tempdirs[] = { "$TMPDIR", "$TEMP", "$TMP", "c:/" }; int i; const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); /* Make sure they have a usable $TMPDIR. Many Emacs functions use temporary files and assume "/tmp" if $TMPDIR is unset, which will break on DOS/Windows. Refuse to work if we cannot find a directory, not even "c:/", usable for that purpose. */ for (i = 0; i < imax ; i++) { const char *tmp = tempdirs[i]; if (*tmp == '$') tmp = getenv (tmp + 1); /* Note that `access' can lie to us if the directory resides on a read-only filesystem, like CD-ROM or a write-protected floppy. The only way to be really sure is to actually create a file and see if it succeeds. But I think that's too much to ask. */ if (tmp && _access (tmp, D_OK) == 0) { char * var = alloca (strlen (tmp) + 8); sprintf (var, "TMPDIR=%s", tmp); _putenv (strdup (var)); break; } } if (i >= imax) cmd_error_internal (Fcons (Qerror, Fcons (build_string ("no usable temporary directories found!!"), Qnil)), "While setting TMPDIR: "); /* Check for environment variables and use registry settings if they don't exist. Fallback on default values where applicable. */ { int i; LPBYTE lpval; DWORD dwType; char locale_name[32]; struct stat ignored; char default_home[MAX_PATH]; int appdata = 0; static const struct env_entry { char * name; char * def_value; } dflt_envvars[] = { {"HOME", "C:/"}, {"PRELOAD_WINSOCK", NULL}, {"emacs_dir", "C:/emacs"}, {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"}, {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, {"EMACSDATA", "%emacs_dir%/etc"}, {"EMACSPATH", "%emacs_dir%/bin"}, /* We no longer set INFOPATH because Info-default-directory-list is then ignored. */ /* {"INFOPATH", "%emacs_dir%/info"}, */ {"EMACSDOC", "%emacs_dir%/etc"}, {"TERM", "cmd"}, {"LANG", NULL}, }; #define N_ENV_VARS sizeof (dflt_envvars)/sizeof (dflt_envvars[0]) /* We need to copy dflt_envvars[] and work on the copy because we don't want the dumped Emacs to inherit the values of environment variables we saw during dumping (which could be on a different system). The defaults above must be left intact. */ struct env_entry env_vars[N_ENV_VARS]; for (i = 0; i < N_ENV_VARS; i++) env_vars[i] = dflt_envvars[i]; /* For backwards compatibility, check if a .emacs file exists in C:/ If not, then we can try to default to the appdata directory under the user's profile, which is more likely to be writable. */ if (stat ("C:/.emacs", &ignored) < 0) { HRESULT profile_result; /* Dynamically load ShGetFolderPath, as it won't exist on versions of Windows 95 and NT4 that have not been updated to include MSIE 5. */ ShGetFolderPath_fn get_folder_path; get_folder_path = (ShGetFolderPath_fn) GetProcAddress (GetModuleHandle ("shell32.dll"), "SHGetFolderPathA"); if (get_folder_path != NULL) { profile_result = get_folder_path (NULL, CSIDL_APPDATA, NULL, 0, default_home); /* If we can't get the appdata dir, revert to old behavior. */ if (profile_result == S_OK) { env_vars[0].def_value = default_home; appdata = 1; } } } /* Get default locale info and use it for LANG. */ if (GetLocaleInfo (LOCALE_USER_DEFAULT, LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, locale_name, sizeof (locale_name))) { for (i = 0; i < N_ENV_VARS; i++) { if (strcmp (env_vars[i].name, "LANG") == 0) { env_vars[i].def_value = locale_name; break; } } } #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ /* Treat emacs_dir specially: set it unconditionally based on our location, if it appears that we are running from the bin subdir of a standard installation. */ { char *p; char modname[MAX_PATH]; if (!GetModuleFileName (NULL, modname, MAX_PATH)) abort (); if ((p = strrchr (modname, '\\')) == NULL) abort (); *p = 0; if ((p = strrchr (modname, '\\')) && xstrcasecmp (p, "\\bin") == 0) { char buf[SET_ENV_BUF_SIZE]; *p = 0; for (p = modname; *p; p++) if (*p == '\\') *p = '/'; _snprintf (buf, sizeof (buf)-1, "emacs_dir=%s", modname); _putenv (strdup (buf)); } /* Handle running emacs from the build directory: src/oo-spd/i386/ */ /* FIXME: should use substring of get_emacs_configuration (). But I don't think the Windows build supports alpha, mips etc anymore, so have taken the easy option for now. */ else if (p && xstrcasecmp (p, "\\i386") == 0) { *p = 0; p = strrchr (modname, '\\'); if (p != NULL) { *p = 0; p = strrchr (modname, '\\'); if (p && xstrcasecmp (p, "\\src") == 0) { char buf[SET_ENV_BUF_SIZE]; *p = 0; for (p = modname; *p; p++) if (*p == '\\') *p = '/'; _snprintf (buf, sizeof (buf)-1, "emacs_dir=%s", modname); _putenv (strdup (buf)); } } } } for (i = 0; i < N_ENV_VARS; i++) { if (!getenv (env_vars[i].name)) { int dont_free = 0; if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL /* Also ignore empty environment variables. */ || *lpval == 0) { xfree (lpval); lpval = env_vars[i].def_value; dwType = REG_EXPAND_SZ; dont_free = 1; if (!strcmp (env_vars[i].name, "HOME") && !appdata) { Lisp_Object warning[2]; warning[0] = intern ("initialization"); warning[1] = build_string ("Setting HOME to C:\\ by default is deprecated"); Vdelayed_warnings_list = Fcons (Flist (2, warning), Vdelayed_warnings_list); } } if (lpval) { char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; if (dwType == REG_EXPAND_SZ) ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof (buf1)); else if (dwType == REG_SZ) strcpy (buf1, lpval); if (dwType == REG_EXPAND_SZ || dwType == REG_SZ) { _snprintf (buf2, sizeof (buf2)-1, "%s=%s", env_vars[i].name, buf1); _putenv (strdup (buf2)); } if (!dont_free) xfree (lpval); } } } } /* Rebuild system configuration to reflect invoking system. */ Vsystem_configuration = build_string (EMACS_CONFIGURATION); /* Another special case: on NT, the PATH variable is actually named "Path" although cmd.exe (perhaps NT itself) arranges for environment variable lookup and setting to be case insensitive. However, Emacs assumes a fully case sensitive environment, so we need to change "Path" to "PATH" to match the expectations of various elisp packages. We do this by the sneaky method of modifying the string in the C runtime environ entry. The same applies to COMSPEC. */ { char ** envp; for (envp = environ; *envp; envp++) if (_strnicmp (*envp, "PATH=", 5) == 0) memcpy (*envp, "PATH=", 5); else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) memcpy (*envp, "COMSPEC=", 8); } /* Remember the initial working directory for getwd, then make the real wd be the location of emacs.exe to avoid conflicts when renaming or deleting directories. (We also don't call chdir when running subprocesses for the same reason.) */ if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) abort (); { char *p; static char modname[MAX_PATH]; if (!GetModuleFileName (NULL, modname, MAX_PATH)) abort (); if ((p = strrchr (modname, '\\')) == NULL) abort (); *p = 0; SetCurrentDirectory (modname); /* Ensure argv[0] has the full path to Emacs. */ *p = '\\'; argv[0] = modname; } /* Determine if there is a middle mouse button, to allow parse_button to decide whether right mouse events should be mouse-2 or mouse-3. */ w32_num_mouse_buttons = GetSystemMetrics (SM_CMOUSEBUTTONS); init_user_info (); } char * emacs_root_dir (void) { static char root_dir[FILENAME_MAX]; const char *p; p = getenv ("emacs_dir"); if (p == NULL) abort (); strcpy (root_dir, p); root_dir[parse_root (root_dir, NULL)] = '\0'; dostounix_filename (root_dir); return root_dir; } /* We don't have scripts to automatically determine the system configuration for Emacs before it's compiled, and we don't want to have to make the user enter it, so we define EMACS_CONFIGURATION to invoke this runtime routine. */ char * get_emacs_configuration (void) { char *arch, *oem, *os; int build_num; static char configuration_buffer[32]; /* Determine the processor type. */ switch (get_processor_type ()) { #ifdef PROCESSOR_INTEL_386 case PROCESSOR_INTEL_386: case PROCESSOR_INTEL_486: case PROCESSOR_INTEL_PENTIUM: arch = "i386"; break; #endif #ifdef PROCESSOR_MIPS_R2000 case PROCESSOR_MIPS_R2000: case PROCESSOR_MIPS_R3000: case PROCESSOR_MIPS_R4000: arch = "mips"; break; #endif #ifdef PROCESSOR_ALPHA_21064 case PROCESSOR_ALPHA_21064: arch = "alpha"; break; #endif default: arch = "unknown"; break; } /* Use the OEM field to reflect the compiler/library combination. */ #ifdef _MSC_VER #define COMPILER_NAME "msvc" #else #ifdef __GNUC__ #define COMPILER_NAME "mingw" #else #define COMPILER_NAME "unknown" #endif #endif oem = COMPILER_NAME; switch (osinfo_cache.dwPlatformId) { case VER_PLATFORM_WIN32_NT: os = "nt"; build_num = osinfo_cache.dwBuildNumber; break; case VER_PLATFORM_WIN32_WINDOWS: if (osinfo_cache.dwMinorVersion == 0) { os = "windows95"; } else { os = "windows98"; } build_num = LOWORD (osinfo_cache.dwBuildNumber); break; case VER_PLATFORM_WIN32s: /* Not supported, should not happen. */ os = "windows32s"; build_num = LOWORD (osinfo_cache.dwBuildNumber); break; default: os = "unknown"; build_num = 0; break; } if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, get_w32_major_version (), get_w32_minor_version (), build_num); } else { sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); } return configuration_buffer; } char * get_emacs_configuration_options (void) { static char *options_buffer; char cv[32]; /* Enough for COMPILER_VERSION. */ char *options[] = { cv, /* To be filled later. */ #ifdef EMACSDEBUG " --no-opt", #endif /* configure.bat already sets USER_CFLAGS and USER_LDFLAGS with a starting space to save work here. */ #ifdef USER_CFLAGS " --cflags", USER_CFLAGS, #endif #ifdef USER_LDFLAGS " --ldflags", USER_LDFLAGS, #endif NULL }; size_t size = 0; int i; /* Work out the effective configure options for this build. */ #ifdef _MSC_VER #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 #else #ifdef __GNUC__ #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ #else #define COMPILER_VERSION "" #endif #endif if (_snprintf (cv, sizeof (cv) - 1, COMPILER_VERSION) < 0) return "Error: not enough space for compiler version"; cv[sizeof (cv) - 1] = '\0'; for (i = 0; options[i]; i++) size += strlen (options[i]); options_buffer = xmalloc (size + 1); options_buffer[0] = '\0'; for (i = 0; options[i]; i++) strcat (options_buffer, options[i]); return options_buffer; } #include /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ void gettimeofday (struct timeval *tv, struct timezone *tz) { struct _timeb tb; _ftime (&tb); tv->tv_sec = tb.time; tv->tv_usec = tb.millitm * 1000L; /* Implementation note: _ftime sometimes doesn't update the dstflag according to the new timezone when the system timezone is changed. We could fix that by using GetSystemTime and GetTimeZoneInformation, but that doesn't seem necessary, since Emacs always calls gettimeofday with the 2nd argument NULL (see EMACS_GET_TIME). */ if (tz) { tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ tz->tz_dsttime = tb.dstflag; /* type of dst correction */ } } /* ------------------------------------------------------------------------- */ /* IO support and wrapper functions for W32 API. */ /* ------------------------------------------------------------------------- */ /* Place a wrapper around the MSVC version of ctime. It returns NULL on network directories, so we handle that case here. (Ulrich Leodolter, 1/11/95). */ char * sys_ctime (const time_t *t) { char *str = (char *) ctime (t); return (str ? str : "Sun Jan 01 00:00:00 1970"); } /* Emulate sleep...we could have done this with a define, but that would necessitate including windows.h in the files that used it. This is much easier. */ void sys_sleep (int seconds) { Sleep (seconds * 1000); } /* Internal MSVC functions for low-level descriptor munging */ extern int __cdecl _set_osfhnd (int fd, long h); extern int __cdecl _free_osfhnd (int fd); /* parallel array of private info on file handles */ filedesc fd_info [ MAXDESC ]; typedef struct volume_info_data { struct volume_info_data * next; /* time when info was obtained */ DWORD timestamp; /* actual volume info */ char * root_dir; DWORD serialnum; DWORD maxcomp; DWORD flags; char * name; char * type; } volume_info_data; /* Global referenced by various functions. */ static volume_info_data volume_info; /* Vector to indicate which drives are local and fixed (for which cached data never expires). */ static BOOL fixed_drives[26]; /* Consider cached volume information to be stale if older than 10s, at least for non-local drives. Info for fixed drives is never stale. */ #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) #define VOLINFO_STILL_VALID( root_dir, info ) \ ( ( isalpha (root_dir[0]) && \ fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ || GetTickCount () - info->timestamp < 10000 ) /* Cache support functions. */ /* Simple linked list with linear search is sufficient. */ static volume_info_data *volume_cache = NULL; static volume_info_data * lookup_volume_info (char * root_dir) { volume_info_data * info; for (info = volume_cache; info; info = info->next) if (xstrcasecmp (info->root_dir, root_dir) == 0) break; return info; } static void add_volume_info (char * root_dir, volume_info_data * info) { info->root_dir = xstrdup (root_dir); info->next = volume_cache; volume_cache = info; } /* Wrapper for GetVolumeInformation, which uses caching to avoid performance penalty (~2ms on 486 for local drives, 7.5ms for local cdrom drive, ~5-10ms or more for remote drives on LAN). */ static volume_info_data * GetCachedVolumeInformation (char * root_dir) { volume_info_data * info; char default_root[ MAX_PATH ]; /* NULL for root_dir means use root from current directory. */ if (root_dir == NULL) { if (GetCurrentDirectory (MAX_PATH, default_root) == 0) return NULL; parse_root (default_root, &root_dir); *root_dir = 0; root_dir = default_root; } /* Local fixed drives can be cached permanently. Removable drives cannot be cached permanently, since the volume name and serial number (if nothing else) can change. Remote drives should be treated as if they are removable, since there is no sure way to tell whether they are or not. Also, the UNC association of drive letters mapped to remote volumes can be changed at any time (even by other processes) without notice. As a compromise, so we can benefit from caching info for remote volumes, we use a simple expiry mechanism to invalidate cache entries that are more than ten seconds old. */ #if 0 /* No point doing this, because WNetGetConnection is even slower than GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, GetDriveType is about the only call of this type which does not involve network access, and so is extremely quick). */ /* Map drive letter to UNC if remote. */ if (isalpha (root_dir[0]) && !fixed[DRIVE_INDEX (root_dir[0])]) { char remote_name[ 256 ]; char drive[3] = { root_dir[0], ':' }; if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) == NO_ERROR) /* do something */ ; } #endif info = lookup_volume_info (root_dir); if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) { char name[ 256 ]; DWORD serialnum; DWORD maxcomp; DWORD flags; char type[ 256 ]; /* Info is not cached, or is stale. */ if (!GetVolumeInformation (root_dir, name, sizeof (name), &serialnum, &maxcomp, &flags, type, sizeof (type))) return NULL; /* Cache the volume information for future use, overwriting existing entry if present. */ if (info == NULL) { info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); add_volume_info (root_dir, info); } else { xfree (info->name); xfree (info->type); } info->name = xstrdup (name); info->serialnum = serialnum; info->maxcomp = maxcomp; info->flags = flags; info->type = xstrdup (type); info->timestamp = GetTickCount (); } return info; } /* Get information on the volume where name is held; set path pointer to start of pathname in name (past UNC header\volume header if present). */ static int get_volume_info (const char * name, const char ** pPath) { char temp[MAX_PATH]; char *rootname = NULL; /* default to current volume */ volume_info_data * info; if (name == NULL) return FALSE; /* find the root name of the volume if given */ if (isalpha (name[0]) && name[1] == ':') { rootname = temp; temp[0] = *name++; temp[1] = *name++; temp[2] = '\\'; temp[3] = 0; } else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) { char *str = temp; int slashes = 4; rootname = temp; do { if (IS_DIRECTORY_SEP (*name) && --slashes == 0) break; *str++ = *name++; } while ( *name ); *str++ = '\\'; *str = 0; } if (pPath) *pPath = name; info = GetCachedVolumeInformation (rootname); if (info != NULL) { /* Set global referenced by other functions. */ volume_info = *info; return TRUE; } return FALSE; } /* Determine if volume is FAT format (ie. only supports short 8.3 names); also set path pointer to start of pathname in name. */ static int is_fat_volume (const char * name, const char ** pPath) { if (get_volume_info (name, pPath)) return (volume_info.maxcomp == 12); return FALSE; } /* Map filename to a valid 8.3 name if necessary. */ const char * map_w32_filename (const char * name, const char ** pPath) { static char shortname[MAX_PATH]; char * str = shortname; char c; char * path; const char * save_name = name; if (strlen (name) >= MAX_PATH) { /* Return a filename which will cause callers to fail. */ strcpy (shortname, "?"); return shortname; } if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ { register int left = 8; /* maximum number of chars in part */ register int extn = 0; /* extension added? */ register int dots = 2; /* maximum number of dots allowed */ while (name < path) *str++ = *name++; /* skip past UNC header */ while ((c = *name++)) { switch ( c ) { case '\\': case '/': *str++ = '\\'; extn = 0; /* reset extension flags */ dots = 2; /* max 2 dots */ left = 8; /* max length 8 for main part */ break; case ':': *str++ = ':'; extn = 0; /* reset extension flags */ dots = 2; /* max 2 dots */ left = 8; /* max length 8 for main part */ break; case '.': if ( dots ) { /* Convert path components of the form .xxx to _xxx, but leave . and .. as they are. This allows .emacs to be read as _emacs, for example. */ if (! *name || *name == '.' || IS_DIRECTORY_SEP (*name)) { *str++ = '.'; dots--; } else { *str++ = '_'; left--; dots = 0; } } else if ( !extn ) { *str++ = '.'; extn = 1; /* we've got an extension */ left = 3; /* 3 chars in extension */ } else { /* any embedded dots after the first are converted to _ */ *str++ = '_'; } break; case '~': case '#': /* don't lose these, they're important */ if ( ! left ) str[-1] = c; /* replace last character of part */ /* FALLTHRU */ default: if ( left ) { *str++ = tolower (c); /* map to lower case (looks nicer) */ left--; dots = 0; /* started a path component */ } break; } } *str = '\0'; } else { strcpy (shortname, name); unixtodos_filename (shortname); } if (pPath) *pPath = shortname + (path - save_name); return shortname; } static int is_exec (const char * name) { char * p = strrchr (name, '.'); return (p != NULL && (xstrcasecmp (p, ".exe") == 0 || xstrcasecmp (p, ".com") == 0 || xstrcasecmp (p, ".bat") == 0 || xstrcasecmp (p, ".cmd") == 0)); } /* Emulate the Unix directory procedures opendir, closedir, and readdir. We can't use the procedures supplied in sysdep.c, so we provide them here. */ struct direct dir_static; /* simulated directory contents */ static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; static int dir_is_fat; static char dir_pathname[MAXPATHLEN+1]; static WIN32_FIND_DATA dir_find_data; /* Support shares on a network resource as subdirectories of a read-only root directory. */ static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; static HANDLE open_unc_volume (const char *); static char *read_unc_volume (HANDLE, char *, int); static void close_unc_volume (HANDLE); DIR * opendir (char *filename) { DIR *dirp; /* Opening is done by FindFirstFile. However, a read is inherent to this operation, so we defer the open until read time. */ if (dir_find_handle != INVALID_HANDLE_VALUE) return NULL; if (wnet_enum_handle != INVALID_HANDLE_VALUE) return NULL; if (is_unc_volume (filename)) { wnet_enum_handle = open_unc_volume (filename); if (wnet_enum_handle == INVALID_HANDLE_VALUE) return NULL; } if (!(dirp = (DIR *) malloc (sizeof (DIR)))) return NULL; dirp->dd_fd = 0; dirp->dd_loc = 0; dirp->dd_size = 0; strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); dir_pathname[MAXPATHLEN] = '\0'; dir_is_fat = is_fat_volume (filename, NULL); return dirp; } void closedir (DIR *dirp) { /* If we have a find-handle open, close it. */ if (dir_find_handle != INVALID_HANDLE_VALUE) { FindClose (dir_find_handle); dir_find_handle = INVALID_HANDLE_VALUE; } else if (wnet_enum_handle != INVALID_HANDLE_VALUE) { close_unc_volume (wnet_enum_handle); wnet_enum_handle = INVALID_HANDLE_VALUE; } xfree ((char *) dirp); } struct direct * readdir (DIR *dirp) { int downcase = !NILP (Vw32_downcase_file_names); if (wnet_enum_handle != INVALID_HANDLE_VALUE) { if (!read_unc_volume (wnet_enum_handle, dir_find_data.cFileName, MAX_PATH)) return NULL; } /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ else if (dir_find_handle == INVALID_HANDLE_VALUE) { char filename[MAXNAMLEN + 3]; int ln; strcpy (filename, dir_pathname); ln = strlen (filename) - 1; if (!IS_DIRECTORY_SEP (filename[ln])) strcat (filename, "\\"); strcat (filename, "*"); dir_find_handle = FindFirstFile (filename, &dir_find_data); if (dir_find_handle == INVALID_HANDLE_VALUE) return NULL; } else { if (!FindNextFile (dir_find_handle, &dir_find_data)) return NULL; } /* Emacs never uses this value, so don't bother making it match value returned by stat(). */ dir_static.d_ino = 1; strcpy (dir_static.d_name, dir_find_data.cFileName); /* If the file name in cFileName[] includes `?' characters, it means the original file name used characters that cannot be represented by the current ANSI codepage. To avoid total lossage, retrieve the short 8+3 alias of the long file name. */ if (_mbspbrk (dir_static.d_name, "?")) { strcpy (dir_static.d_name, dir_find_data.cAlternateFileName); downcase = 1; /* 8+3 aliases are returned in all caps */ } dir_static.d_namlen = strlen (dir_static.d_name); dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + dir_static.d_namlen - dir_static.d_namlen % 4; /* If the file name in cFileName[] includes `?' characters, it means the original file name used characters that cannot be represented by the current ANSI codepage. To avoid total lossage, retrieve the short 8+3 alias of the long file name. */ if (_mbspbrk (dir_find_data.cFileName, "?")) { strcpy (dir_static.d_name, dir_find_data.cAlternateFileName); /* 8+3 aliases are returned in all caps, which could break various alists that look at filenames' extensions. */ downcase = 1; } else strcpy (dir_static.d_name, dir_find_data.cFileName); dir_static.d_namlen = strlen (dir_static.d_name); if (dir_is_fat) _strlwr (dir_static.d_name); else if (downcase) { register char *p; for (p = dir_static.d_name; *p; p++) if (*p >= 'a' && *p <= 'z') break; if (!*p) _strlwr (dir_static.d_name); } return &dir_static; } static HANDLE open_unc_volume (const char *path) { NETRESOURCE nr; HANDLE henum; int result; nr.dwScope = RESOURCE_GLOBALNET; nr.dwType = RESOURCETYPE_DISK; nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; nr.dwUsage = RESOURCEUSAGE_CONTAINER; nr.lpLocalName = NULL; nr.lpRemoteName = (LPSTR)map_w32_filename (path, NULL); nr.lpComment = NULL; nr.lpProvider = NULL; result = WNetOpenEnum (RESOURCE_GLOBALNET, RESOURCETYPE_DISK, RESOURCEUSAGE_CONNECTABLE, &nr, &henum); if (result == NO_ERROR) return henum; else return INVALID_HANDLE_VALUE; } static char * read_unc_volume (HANDLE henum, char *readbuf, int size) { DWORD count; int result; DWORD bufsize = 512; char *buffer; char *ptr; count = 1; buffer = alloca (bufsize); result = WNetEnumResource (henum, &count, buffer, &bufsize); if (result != NO_ERROR) return NULL; /* WNetEnumResource returns \\resource\share...skip forward to "share". */ ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; ptr += 2; while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; ptr++; strncpy (readbuf, ptr, size); return readbuf; } static void close_unc_volume (HANDLE henum) { if (henum != INVALID_HANDLE_VALUE) WNetCloseEnum (henum); } static DWORD unc_volume_file_attributes (const char *path) { HANDLE henum; DWORD attrs; henum = open_unc_volume (path); if (henum == INVALID_HANDLE_VALUE) return -1; attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; close_unc_volume (henum); return attrs; } /* Ensure a network connection is authenticated. */ static void logon_network_drive (const char *path) { NETRESOURCE resource; char share[MAX_PATH]; int i, n_slashes; char drive[4]; UINT drvtype; if (IS_DIRECTORY_SEP (path[0]) && IS_DIRECTORY_SEP (path[1])) drvtype = DRIVE_REMOTE; else if (path[0] == '\0' || path[1] != ':') drvtype = GetDriveType (NULL); else { drive[0] = path[0]; drive[1] = ':'; drive[2] = '\\'; drive[3] = '\0'; drvtype = GetDriveType (drive); } /* Only logon to networked drives. */ if (drvtype != DRIVE_REMOTE) return; n_slashes = 2; strncpy (share, path, MAX_PATH); /* Truncate to just server and share name. */ for (i = 2; i < MAX_PATH; i++) { if (IS_DIRECTORY_SEP (share[i]) && ++n_slashes > 3) { share[i] = '\0'; break; } } resource.dwType = RESOURCETYPE_DISK; resource.lpLocalName = NULL; resource.lpRemoteName = share; resource.lpProvider = NULL; WNetAddConnection2 (&resource, NULL, NULL, CONNECT_INTERACTIVE); } /* Shadow some MSVC runtime functions to map requests for long filenames to reasonable short names if necessary. This was originally added to permit running Emacs on NT 3.1 on a FAT partition, which doesn't support long file names. */ int sys_access (const char * path, int mode) { DWORD attributes; /* MSVC implementation doesn't recognize D_OK. */ path = map_w32_filename (path, NULL); if (is_unc_volume (path)) { attributes = unc_volume_file_attributes (path); if (attributes == -1) { errno = EACCES; return -1; } } else if ((attributes = GetFileAttributes (path)) == -1) { /* Should try mapping GetLastError to errno; for now just indicate that path doesn't exist. */ errno = EACCES; return -1; } if ((mode & X_OK) != 0 && !is_exec (path)) { errno = EACCES; return -1; } if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) { errno = EACCES; return -1; } if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) { errno = EACCES; return -1; } return 0; } int sys_chdir (const char * path) { return _chdir (map_w32_filename (path, NULL)); } int sys_chmod (const char * path, int mode) { return _chmod (map_w32_filename (path, NULL), mode); } int sys_chown (const char *path, uid_t owner, gid_t group) { if (sys_chmod (path, S_IREAD) == -1) /* check if file exists */ return -1; return 0; } int sys_creat (const char * path, int mode) { return _creat (map_w32_filename (path, NULL), mode); } FILE * sys_fopen (const char * path, const char * mode) { int fd; int oflag; const char * mode_save = mode; /* Force all file handles to be non-inheritable. This is necessary to ensure child processes don't unwittingly inherit handles that might prevent future file access. */ if (mode[0] == 'r') oflag = O_RDONLY; else if (mode[0] == 'w' || mode[0] == 'a') oflag = O_WRONLY | O_CREAT | O_TRUNC; else return NULL; /* Only do simplistic option parsing. */ while (*++mode) if (mode[0] == '+') { oflag &= ~(O_RDONLY | O_WRONLY); oflag |= O_RDWR; } else if (mode[0] == 'b') { oflag &= ~O_TEXT; oflag |= O_BINARY; } else if (mode[0] == 't') { oflag &= ~O_BINARY; oflag |= O_TEXT; } else break; fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); if (fd < 0) return NULL; return _fdopen (fd, mode_save); } /* This only works on NTFS volumes, but is useful to have. */ int sys_link (const char * old, const char * new) { HANDLE fileh; int result = -1; char oldname[MAX_PATH], newname[MAX_PATH]; if (old == NULL || new == NULL) { errno = ENOENT; return -1; } strcpy (oldname, map_w32_filename (old, NULL)); strcpy (newname, map_w32_filename (new, NULL)); fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL); if (fileh != INVALID_HANDLE_VALUE) { int wlen; /* Confusingly, the "alternate" stream name field does not apply when restoring a hard link, and instead contains the actual stream data for the link (ie. the name of the link to create). The WIN32_STREAM_ID structure before the cStreamName field is the stream header, which is then immediately followed by the stream data. */ struct { WIN32_STREAM_ID wid; WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ } data; wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, data.wid.cStreamName, MAX_PATH); if (wlen > 0) { LPVOID context = NULL; DWORD wbytes = 0; data.wid.dwStreamId = BACKUP_LINK; data.wid.dwStreamAttributes = 0; data.wid.Size.LowPart = wlen * sizeof (WCHAR); data.wid.Size.HighPart = 0; data.wid.dwStreamNameSize = 0; if (BackupWrite (fileh, (LPBYTE)&data, offsetof (WIN32_STREAM_ID, cStreamName) + data.wid.Size.LowPart, &wbytes, FALSE, FALSE, &context) && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) { /* succeeded */ result = 0; } else { /* Should try mapping GetLastError to errno; for now just indicate a general error (eg. links not supported). */ errno = EINVAL; // perhaps EMLINK? } } CloseHandle (fileh); } else errno = ENOENT; return result; } int sys_mkdir (const char * path) { return _mkdir (map_w32_filename (path, NULL)); } /* Because of long name mapping issues, we need to implement this ourselves. Also, MSVC's _mktemp returns NULL when it can't generate a unique name, instead of setting the input template to an empty string. Standard algorithm seems to be use pid or tid with a letter on the front (in place of the 6 X's) and cycle through the letters to find a unique name. We extend that to allow any reasonable character as the first of the 6 X's. */ char * sys_mktemp (char * template) { char * p; int i; unsigned uid = GetCurrentThreadId (); static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; if (template == NULL) return NULL; p = template + strlen (template); i = 5; /* replace up to the last 5 X's with uid in decimal */ while (--p >= template && p[0] == 'X' && --i >= 0) { p[0] = '0' + uid % 10; uid /= 10; } if (i < 0 && p[0] == 'X') { i = 0; do { int save_errno = errno; p[0] = first_char[i]; if (sys_access (template, 0) < 0) { errno = save_errno; return template; } } while (++i < sizeof (first_char)); } /* Template is badly formed or else we can't generate a unique name, so return empty string */ template[0] = 0; return template; } int sys_open (const char * path, int oflag, int mode) { const char* mpath = map_w32_filename (path, NULL); /* Try to open file without _O_CREAT, to be able to write to hidden and system files. Force all file handles to be non-inheritable. */ int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode); if (res >= 0) return res; return _open (mpath, oflag | _O_NOINHERIT, mode); } int sys_rename (const char * oldname, const char * newname) { BOOL result; char temp[MAX_PATH]; /* MoveFile on Windows 95 doesn't correctly change the short file name alias in a number of circumstances (it is not easy to predict when just by looking at oldname and newname, unfortunately). In these cases, renaming through a temporary name avoids the problem. A second problem on Windows 95 is that renaming through a temp name when newname is uppercase fails (the final long name ends up in lowercase, although the short alias might be uppercase) UNLESS the long temp name is not 8.3. So, on Windows 95 we always rename through a temp name, and we make sure the temp name has a long extension to ensure correct renaming. */ strcpy (temp, map_w32_filename (oldname, NULL)); if (os_subtype == OS_WIN95) { char * o; char * p; int i = 0; oldname = map_w32_filename (oldname, NULL); if (o = strrchr (oldname, '\\')) o++; else o = (char *) oldname; if (p = strrchr (temp, '\\')) p++; else p = temp; do { /* Force temp name to require a manufactured 8.3 alias - this seems to make the second rename work properly. */ sprintf (p, "_.%s.%u", o, i); i++; result = rename (oldname, temp); } /* This loop must surely terminate! */ while (result < 0 && errno == EEXIST); if (result < 0) return -1; } /* Emulate Unix behavior - newname is deleted if it already exists (at least if it is a file; don't do this for directories). Since we mustn't do this if we are just changing the case of the file name (we would end up deleting the file we are trying to rename!), we let rename detect if the destination file already exists - that way we avoid the possible pitfalls of trying to determine ourselves whether two names really refer to the same file, which is not always possible in the general case. (Consider all the permutations of shared or subst'd drives, etc.) */ newname = map_w32_filename (newname, NULL); result = rename (temp, newname); if (result < 0 && errno == EEXIST && _chmod (newname, 0666) == 0 && _unlink (newname) == 0) result = rename (temp, newname); return result; } int sys_rmdir (const char * path) { return _rmdir (map_w32_filename (path, NULL)); } int sys_unlink (const char * path) { path = map_w32_filename (path, NULL); /* On Unix, unlink works without write permission. */ _chmod (path, 0666); return _unlink (path); } static FILETIME utc_base_ft; static ULONGLONG utc_base; /* In 100ns units */ static int init = 0; #define FILETIME_TO_U64(result, ft) \ do { \ ULARGE_INTEGER uiTemp; \ uiTemp.LowPart = (ft).dwLowDateTime; \ uiTemp.HighPart = (ft).dwHighDateTime; \ result = uiTemp.QuadPart; \ } while (0) static void initialize_utc_base (void) { /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ SYSTEMTIME st; st.wYear = 1970; st.wMonth = 1; st.wDay = 1; st.wHour = 0; st.wMinute = 0; st.wSecond = 0; st.wMilliseconds = 0; SystemTimeToFileTime (&st, &utc_base_ft); FILETIME_TO_U64 (utc_base, utc_base_ft); } static time_t convert_time (FILETIME ft) { ULONGLONG tmp; if (!init) { initialize_utc_base (); init = 1; } if (CompareFileTime (&ft, &utc_base_ft) < 0) return 0; FILETIME_TO_U64 (tmp, ft); return (time_t) ((tmp - utc_base) / 10000000L); } static void convert_from_time_t (time_t time, FILETIME * pft) { ULARGE_INTEGER tmp; if (!init) { initialize_utc_base (); init = 1; } /* time in 100ns units since 1-Jan-1601 */ tmp.QuadPart = (ULONGLONG) time * 10000000L + utc_base; pft->dwHighDateTime = tmp.HighPart; pft->dwLowDateTime = tmp.LowPart; } #if 0 /* No reason to keep this; faking inode values either by hashing or even using the file index from GetInformationByHandle, is not perfect and so by default Emacs doesn't use the inode values on Windows. Instead, we now determine file-truename correctly (except for possible drive aliasing etc). */ /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ static unsigned hashval (const unsigned char * str) { unsigned h = 0; while (*str) { h = (h << 4) + *str++; h ^= (h >> 28); } return h; } /* Return the hash value of the canonical pathname, excluding the drive/UNC header, to get a hopefully unique inode number. */ static DWORD generate_inode_val (const char * name) { char fullname[ MAX_PATH ]; char * p; unsigned hash; /* Get the truly canonical filename, if it exists. (Note: this doesn't resolve aliasing due to subst commands, or recognise hard links. */ if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) abort (); parse_root (fullname, &p); /* Normal W32 filesystems are still case insensitive. */ _strlwr (p); return hashval (p); } #endif static PSECURITY_DESCRIPTOR get_file_security_desc (const char *fname) { PSECURITY_DESCRIPTOR psd = NULL; DWORD sd_len, err; SECURITY_INFORMATION si = OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION /* | DACL_SECURITY_INFORMATION */ ; if (!get_file_security (fname, si, psd, 0, &sd_len)) { err = GetLastError (); if (err != ERROR_INSUFFICIENT_BUFFER) return NULL; } psd = xmalloc (sd_len); if (!get_file_security (fname, si, psd, sd_len, &sd_len)) { xfree (psd); return NULL; } return psd; } static DWORD get_rid (PSID sid) { unsigned n_subauthorities; /* Use the last sub-authority value of the RID, the relative portion of the SID, as user/group ID. */ n_subauthorities = *get_sid_sub_authority_count (sid); if (n_subauthorities < 1) return 0; /* the "World" RID */ return *get_sid_sub_authority (sid, n_subauthorities - 1); } /* Caching SID and account values for faster lokup. */ #ifdef __GNUC__ # define FLEXIBLE_ARRAY_MEMBER #else # define FLEXIBLE_ARRAY_MEMBER 1 #endif struct w32_id { unsigned rid; struct w32_id *next; char name[GNLEN+1]; unsigned char sid[FLEXIBLE_ARRAY_MEMBER]; }; static struct w32_id *w32_idlist; static int w32_cached_id (PSID sid, unsigned *id, char *name) { struct w32_id *tail, *found; for (found = NULL, tail = w32_idlist; tail; tail = tail->next) { if (equal_sid ((PSID)tail->sid, sid)) { found = tail; break; } } if (found) { *id = found->rid; strcpy (name, found->name); return 1; } else return 0; } static void w32_add_to_cache (PSID sid, unsigned id, char *name) { DWORD sid_len; struct w32_id *new_entry; /* We don't want to leave behind stale cache from when Emacs was dumped. */ if (initialized) { sid_len = get_length_sid (sid); new_entry = xmalloc (offsetof (struct w32_id, sid) + sid_len); if (new_entry) { new_entry->rid = id; strcpy (new_entry->name, name); copy_sid (sid_len, (PSID)new_entry->sid, sid); new_entry->next = w32_idlist; w32_idlist = new_entry; } } } #define UID 1 #define GID 2 static int get_name_and_id (PSECURITY_DESCRIPTOR psd, const char *fname, unsigned *id, char *nm, int what) { PSID sid = NULL; char machine[MAX_COMPUTERNAME_LENGTH+1]; BOOL dflt; SID_NAME_USE ignore; char name[UNLEN+1]; DWORD name_len = sizeof (name); char domain[1024]; DWORD domain_len = sizeof (domain); char *mp = NULL; int use_dflt = 0; int result; if (what == UID) result = get_security_descriptor_owner (psd, &sid, &dflt); else if (what == GID) result = get_security_descriptor_group (psd, &sid, &dflt); else result = 0; if (!result || !is_valid_sid (sid)) use_dflt = 1; else if (!w32_cached_id (sid, id, nm)) { /* If FNAME is a UNC, we need to lookup account on the specified machine. */ if (IS_DIRECTORY_SEP (fname[0]) && IS_DIRECTORY_SEP (fname[1]) && fname[2] != '\0') { const char *s; char *p; for (s = fname + 2, p = machine; *s && !IS_DIRECTORY_SEP (*s); s++, p++) *p = *s; *p = '\0'; mp = machine; } if (!lookup_account_sid (mp, sid, name, &name_len, domain, &domain_len, &ignore) || name_len > UNLEN+1) use_dflt = 1; else { *id = get_rid (sid); strcpy (nm, name); w32_add_to_cache (sid, *id, name); } } return use_dflt; } static void get_file_owner_and_group (PSECURITY_DESCRIPTOR psd, const char *fname, struct stat *st) { int dflt_usr = 0, dflt_grp = 0; if (!psd) { dflt_usr = 1; dflt_grp = 1; } else { if (get_name_and_id (psd, fname, &st->st_uid, st->st_uname, UID)) dflt_usr = 1; if (get_name_and_id (psd, fname, &st->st_gid, st->st_gname, GID)) dflt_grp = 1; } /* Consider files to belong to current user/group, if we cannot get more accurate information. */ if (dflt_usr) { st->st_uid = dflt_passwd.pw_uid; strcpy (st->st_uname, dflt_passwd.pw_name); } if (dflt_grp) { st->st_gid = dflt_passwd.pw_gid; strcpy (st->st_gname, dflt_group.gr_name); } } /* Return non-zero if NAME is a potentially slow filesystem. */ int is_slow_fs (const char *name) { char drive_root[4]; UINT devtype; if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) devtype = DRIVE_REMOTE; /* assume UNC name is remote */ else if (!(strlen (name) >= 2 && IS_DEVICE_SEP (name[1]))) devtype = GetDriveType (NULL); /* use root of current drive */ else { /* GetDriveType needs the root directory of the drive. */ strncpy (drive_root, name, 2); drive_root[2] = '\\'; drive_root[3] = '\0'; devtype = GetDriveType (drive_root); } return !(devtype == DRIVE_FIXED || devtype == DRIVE_RAMDISK); } /* MSVC stat function can't cope with UNC names and has other bugs, so replace it with our own. This also allows us to calculate consistent inode values without hacks in the main Emacs code. */ int stat (const char * path, struct stat * buf) { char *name, *r; WIN32_FIND_DATA wfd; HANDLE fh; unsigned __int64 fake_inode; int permission; int len; int rootdir = FALSE; PSECURITY_DESCRIPTOR psd = NULL; if (path == NULL || buf == NULL) { errno = EFAULT; return -1; } name = (char *) map_w32_filename (path, &path); /* Must be valid filename, no wild cards or other invalid characters. We use _mbspbrk to support multibyte strings that might look to strpbrk as if they included literal *, ?, and other characters mentioned below that are disallowed by Windows filesystems. */ if (_mbspbrk (name, "*?|<>\"")) { errno = ENOENT; return -1; } /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0') { r[1] = r[2] = '\0'; } /* Remove trailing directory separator, unless name is the root directory of a drive or UNC volume in which case ensure there is a trailing separator. */ len = strlen (name); rootdir = (path >= name + len - 1 && (IS_DIRECTORY_SEP (*path) || *path == 0)); name = strcpy (alloca (len + 2), name); if (is_unc_volume (name)) { DWORD attrs = unc_volume_file_attributes (name); if (attrs == -1) return -1; memset (&wfd, 0, sizeof (wfd)); wfd.dwFileAttributes = attrs; wfd.ftCreationTime = utc_base_ft; wfd.ftLastAccessTime = utc_base_ft; wfd.ftLastWriteTime = utc_base_ft; strcpy (wfd.cFileName, name); } else if (rootdir) { if (!IS_DIRECTORY_SEP (name[len-1])) strcat (name, "\\"); if (GetDriveType (name) < 2) { errno = ENOENT; return -1; } memset (&wfd, 0, sizeof (wfd)); wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; wfd.ftCreationTime = utc_base_ft; wfd.ftLastAccessTime = utc_base_ft; wfd.ftLastWriteTime = utc_base_ft; strcpy (wfd.cFileName, name); } else { if (IS_DIRECTORY_SEP (name[len-1])) name[len - 1] = 0; /* (This is hacky, but helps when doing file completions on network drives.) Optimize by using information available from active readdir if possible. */ len = strlen (dir_pathname); if (IS_DIRECTORY_SEP (dir_pathname[len-1])) len--; if (dir_find_handle != INVALID_HANDLE_VALUE && strnicmp (name, dir_pathname, len) == 0 && IS_DIRECTORY_SEP (name[len]) && xstrcasecmp (name + len + 1, dir_static.d_name) == 0) { /* This was the last entry returned by readdir. */ wfd = dir_find_data; } else { logon_network_drive (name); fh = FindFirstFile (name, &wfd); if (fh == INVALID_HANDLE_VALUE) { errno = ENOENT; return -1; } FindClose (fh); } } if (!(NILP (Vw32_get_true_file_attributes) || (EQ (Vw32_get_true_file_attributes, Qlocal) && is_slow_fs (name))) /* No access rights required to get info. */ && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL)) != INVALID_HANDLE_VALUE) { /* This is more accurate in terms of gettting the correct number of links, but is quite slow (it is noticeable when Emacs is making a list of file name completions). */ BY_HANDLE_FILE_INFORMATION info; if (GetFileInformationByHandle (fh, &info)) { buf->st_nlink = info.nNumberOfLinks; /* Might as well use file index to fake inode values, but this is not guaranteed to be unique unless we keep a handle open all the time (even then there are situations where it is not unique). Reputedly, there are at most 48 bits of info (on NTFS, presumably less on FAT). */ fake_inode = info.nFileIndexHigh; fake_inode <<= 32; fake_inode += info.nFileIndexLow; } else { buf->st_nlink = 1; fake_inode = 0; } if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { buf->st_mode = S_IFDIR; } else { switch (GetFileType (fh)) { case FILE_TYPE_DISK: buf->st_mode = S_IFREG; break; case FILE_TYPE_PIPE: buf->st_mode = S_IFIFO; break; case FILE_TYPE_CHAR: case FILE_TYPE_UNKNOWN: default: buf->st_mode = S_IFCHR; } } CloseHandle (fh); psd = get_file_security_desc (name); get_file_owner_and_group (psd, name, buf); } else { /* Don't bother to make this information more accurate. */ buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? S_IFDIR : S_IFREG; buf->st_nlink = 1; fake_inode = 0; get_file_owner_and_group (NULL, name, buf); } xfree (psd); #if 0 /* Not sure if there is any point in this. */ if (!NILP (Vw32_generate_fake_inodes)) fake_inode = generate_inode_val (name); else if (fake_inode == 0) { /* For want of something better, try to make everything unique. */ static DWORD gen_num = 0; fake_inode = ++gen_num; } #endif /* MSVC defines _ino_t to be short; other libc's might not. */ if (sizeof (buf->st_ino) == 2) buf->st_ino = fake_inode ^ (fake_inode >> 16); else buf->st_ino = fake_inode; /* volume_info is set indirectly by map_w32_filename */ buf->st_dev = volume_info.serialnum; buf->st_rdev = volume_info.serialnum; buf->st_size = wfd.nFileSizeHigh; buf->st_size <<= 32; buf->st_size += wfd.nFileSizeLow; /* Convert timestamps to Unix format. */ buf->st_mtime = convert_time (wfd.ftLastWriteTime); buf->st_atime = convert_time (wfd.ftLastAccessTime); if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; buf->st_ctime = convert_time (wfd.ftCreationTime); if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; /* determine rwx permissions */ if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) permission = S_IREAD; else permission = S_IREAD | S_IWRITE; if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) permission |= S_IEXEC; else if (is_exec (name)) permission |= S_IEXEC; buf->st_mode |= permission | (permission >> 3) | (permission >> 6); return 0; } /* Provide fstat and utime as well as stat for consistent handling of file timestamps. */ int fstat (int desc, struct stat * buf) { HANDLE fh = (HANDLE) _get_osfhandle (desc); BY_HANDLE_FILE_INFORMATION info; unsigned __int64 fake_inode; int permission; switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) { case FILE_TYPE_DISK: buf->st_mode = S_IFREG; if (!GetFileInformationByHandle (fh, &info)) { errno = EACCES; return -1; } break; case FILE_TYPE_PIPE: buf->st_mode = S_IFIFO; goto non_disk; case FILE_TYPE_CHAR: case FILE_TYPE_UNKNOWN: default: buf->st_mode = S_IFCHR; non_disk: memset (&info, 0, sizeof (info)); info.dwFileAttributes = 0; info.ftCreationTime = utc_base_ft; info.ftLastAccessTime = utc_base_ft; info.ftLastWriteTime = utc_base_ft; } if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) buf->st_mode = S_IFDIR; buf->st_nlink = info.nNumberOfLinks; /* Might as well use file index to fake inode values, but this is not guaranteed to be unique unless we keep a handle open all the time (even then there are situations where it is not unique). Reputedly, there are at most 48 bits of info (on NTFS, presumably less on FAT). */ fake_inode = info.nFileIndexHigh; fake_inode <<= 32; fake_inode += info.nFileIndexLow; /* MSVC defines _ino_t to be short; other libc's might not. */ if (sizeof (buf->st_ino) == 2) buf->st_ino = fake_inode ^ (fake_inode >> 16); else buf->st_ino = fake_inode; /* Consider files to belong to current user. FIXME: this should use GetSecurityInfo API, but it is only available for _WIN32_WINNT >= 0x501. */ buf->st_uid = dflt_passwd.pw_uid; buf->st_gid = dflt_passwd.pw_gid; strcpy (buf->st_uname, dflt_passwd.pw_name); strcpy (buf->st_gname, dflt_group.gr_name); buf->st_dev = info.dwVolumeSerialNumber; buf->st_rdev = info.dwVolumeSerialNumber; buf->st_size = info.nFileSizeHigh; buf->st_size <<= 32; buf->st_size += info.nFileSizeLow; /* Convert timestamps to Unix format. */ buf->st_mtime = convert_time (info.ftLastWriteTime); buf->st_atime = convert_time (info.ftLastAccessTime); if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; buf->st_ctime = convert_time (info.ftCreationTime); if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; /* determine rwx permissions */ if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) permission = S_IREAD; else permission = S_IREAD | S_IWRITE; if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) permission |= S_IEXEC; else { #if 0 /* no way of knowing the filename */ char * p = strrchr (name, '.'); if (p != NULL && (xstrcasecmp (p, ".exe") == 0 || xstrcasecmp (p, ".com") == 0 || xstrcasecmp (p, ".bat") == 0 || xstrcasecmp (p, ".cmd") == 0)) permission |= S_IEXEC; #endif } buf->st_mode |= permission | (permission >> 3) | (permission >> 6); return 0; } int utime (const char *name, struct utimbuf *times) { struct utimbuf deftime; HANDLE fh; FILETIME mtime; FILETIME atime; if (times == NULL) { deftime.modtime = deftime.actime = time (NULL); times = &deftime; } /* Need write access to set times. */ fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, 0, OPEN_EXISTING, 0, NULL); if (fh) { convert_from_time_t (times->actime, &atime); convert_from_time_t (times->modtime, &mtime); if (!SetFileTime (fh, NULL, &atime, &mtime)) { CloseHandle (fh); errno = EACCES; return -1; } CloseHandle (fh); } else { errno = EINVAL; return -1; } return 0; } /* Symlink-related functions that always fail. Used in fileio.c and in sysdep.c to avoid #ifdef's. */ int symlink (char const *dummy1, char const *dummy2) { errno = ENOSYS; return -1; } ssize_t readlink (const char *name, char *dummy1, size_t dummy2) { /* `access' is much faster than `stat' on MS-Windows. */ if (sys_access (name, 0) == 0) errno = EINVAL; return -1; } char * careadlinkat (int fd, char const *filename, char *buffer, size_t buffer_size, struct allocator const *alloc, ssize_t (*preadlinkat) (int, char const *, char *, size_t)) { errno = ENOSYS; return NULL; } ssize_t careadlinkatcwd (int fd, char const *filename, char *buffer, size_t buffer_size) { (void) fd; return readlink (filename, buffer, buffer_size); } /* Support for browsing other processes and their attributes. See process.c for the Lisp bindings. */ /* Helper wrapper functions. */ static HANDLE WINAPI create_toolhelp32_snapshot (DWORD Flags, DWORD Ignored) { static CreateToolhelp32Snapshot_Proc s_pfn_Create_Toolhelp32_Snapshot = NULL; if (g_b_init_create_toolhelp32_snapshot == 0) { g_b_init_create_toolhelp32_snapshot = 1; s_pfn_Create_Toolhelp32_Snapshot = (CreateToolhelp32Snapshot_Proc) GetProcAddress (GetModuleHandle ("kernel32.dll"), "CreateToolhelp32Snapshot"); } if (s_pfn_Create_Toolhelp32_Snapshot == NULL) { return INVALID_HANDLE_VALUE; } return (s_pfn_Create_Toolhelp32_Snapshot (Flags, Ignored)); } static BOOL WINAPI process32_first (HANDLE hSnapshot, LPPROCESSENTRY32 lppe) { static Process32First_Proc s_pfn_Process32_First = NULL; if (g_b_init_process32_first == 0) { g_b_init_process32_first = 1; s_pfn_Process32_First = (Process32First_Proc) GetProcAddress (GetModuleHandle ("kernel32.dll"), "Process32First"); } if (s_pfn_Process32_First == NULL) { return FALSE; } return (s_pfn_Process32_First (hSnapshot, lppe)); } static BOOL WINAPI process32_next (HANDLE hSnapshot, LPPROCESSENTRY32 lppe) { static Process32Next_Proc s_pfn_Process32_Next = NULL; if (g_b_init_process32_next == 0) { g_b_init_process32_next = 1; s_pfn_Process32_Next = (Process32Next_Proc) GetProcAddress (GetModuleHandle ("kernel32.dll"), "Process32Next"); } if (s_pfn_Process32_Next == NULL) { return FALSE; } return (s_pfn_Process32_Next (hSnapshot, lppe)); } static BOOL WINAPI open_thread_token (HANDLE ThreadHandle, DWORD DesiredAccess, BOOL OpenAsSelf, PHANDLE TokenHandle) { static OpenThreadToken_Proc s_pfn_Open_Thread_Token = NULL; HMODULE hm_advapi32 = NULL; if (is_windows_9x () == TRUE) { SetLastError (ERROR_NOT_SUPPORTED); return FALSE; } if (g_b_init_open_thread_token == 0) { g_b_init_open_thread_token = 1; hm_advapi32 = LoadLibrary ("Advapi32.dll"); s_pfn_Open_Thread_Token = (OpenThreadToken_Proc) GetProcAddress (hm_advapi32, "OpenThreadToken"); } if (s_pfn_Open_Thread_Token == NULL) { SetLastError (ERROR_NOT_SUPPORTED); return FALSE; } return ( s_pfn_Open_Thread_Token ( ThreadHandle, DesiredAccess, OpenAsSelf, TokenHandle) ); } static BOOL WINAPI impersonate_self (SECURITY_IMPERSONATION_LEVEL ImpersonationLevel) { static ImpersonateSelf_Proc s_pfn_Impersonate_Self = NULL; HMODULE hm_advapi32 = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_impersonate_self == 0) { g_b_init_impersonate_self = 1; hm_advapi32 = LoadLibrary ("Advapi32.dll"); s_pfn_Impersonate_Self = (ImpersonateSelf_Proc) GetProcAddress (hm_advapi32, "ImpersonateSelf"); } if (s_pfn_Impersonate_Self == NULL) { return FALSE; } return s_pfn_Impersonate_Self (ImpersonationLevel); } static BOOL WINAPI revert_to_self (void) { static RevertToSelf_Proc s_pfn_Revert_To_Self = NULL; HMODULE hm_advapi32 = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_revert_to_self == 0) { g_b_init_revert_to_self = 1; hm_advapi32 = LoadLibrary ("Advapi32.dll"); s_pfn_Revert_To_Self = (RevertToSelf_Proc) GetProcAddress (hm_advapi32, "RevertToSelf"); } if (s_pfn_Revert_To_Self == NULL) { return FALSE; } return s_pfn_Revert_To_Self (); } static BOOL WINAPI get_process_memory_info (HANDLE h_proc, PPROCESS_MEMORY_COUNTERS mem_counters, DWORD bufsize) { static GetProcessMemoryInfo_Proc s_pfn_Get_Process_Memory_Info = NULL; HMODULE hm_psapi = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_get_process_memory_info == 0) { g_b_init_get_process_memory_info = 1; hm_psapi = LoadLibrary ("Psapi.dll"); if (hm_psapi) s_pfn_Get_Process_Memory_Info = (GetProcessMemoryInfo_Proc) GetProcAddress (hm_psapi, "GetProcessMemoryInfo"); } if (s_pfn_Get_Process_Memory_Info == NULL) { return FALSE; } return s_pfn_Get_Process_Memory_Info (h_proc, mem_counters, bufsize); } static BOOL WINAPI get_process_working_set_size (HANDLE h_proc, DWORD *minrss, DWORD *maxrss) { static GetProcessWorkingSetSize_Proc s_pfn_Get_Process_Working_Set_Size = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_get_process_working_set_size == 0) { g_b_init_get_process_working_set_size = 1; s_pfn_Get_Process_Working_Set_Size = (GetProcessWorkingSetSize_Proc) GetProcAddress (GetModuleHandle ("kernel32.dll"), "GetProcessWorkingSetSize"); } if (s_pfn_Get_Process_Working_Set_Size == NULL) { return FALSE; } return s_pfn_Get_Process_Working_Set_Size (h_proc, minrss, maxrss); } static BOOL WINAPI global_memory_status (MEMORYSTATUS *buf) { static GlobalMemoryStatus_Proc s_pfn_Global_Memory_Status = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_global_memory_status == 0) { g_b_init_global_memory_status = 1; s_pfn_Global_Memory_Status = (GlobalMemoryStatus_Proc) GetProcAddress (GetModuleHandle ("kernel32.dll"), "GlobalMemoryStatus"); } if (s_pfn_Global_Memory_Status == NULL) { return FALSE; } return s_pfn_Global_Memory_Status (buf); } static BOOL WINAPI global_memory_status_ex (MEMORY_STATUS_EX *buf) { static GlobalMemoryStatusEx_Proc s_pfn_Global_Memory_Status_Ex = NULL; if (is_windows_9x () == TRUE) { return FALSE; } if (g_b_init_global_memory_status_ex == 0) { g_b_init_global_memory_status_ex = 1; s_pfn_Global_Memory_Status_Ex = (GlobalMemoryStatusEx_Proc) GetProcAddress (GetModuleHandle ("kernel32.dll"), "GlobalMemoryStatusEx"); } if (s_pfn_Global_Memory_Status_Ex == NULL) { return FALSE; } return s_pfn_Global_Memory_Status_Ex (buf); } Lisp_Object list_system_processes (void) { struct gcpro gcpro1; Lisp_Object proclist = Qnil; HANDLE h_snapshot; h_snapshot = create_toolhelp32_snapshot (TH32CS_SNAPPROCESS, 0); if (h_snapshot != INVALID_HANDLE_VALUE) { PROCESSENTRY32 proc_entry; DWORD proc_id; BOOL res; GCPRO1 (proclist); proc_entry.dwSize = sizeof (PROCESSENTRY32); for (res = process32_first (h_snapshot, &proc_entry); res; res = process32_next (h_snapshot, &proc_entry)) { proc_id = proc_entry.th32ProcessID; proclist = Fcons (make_fixnum_or_float (proc_id), proclist); } CloseHandle (h_snapshot); UNGCPRO; proclist = Fnreverse (proclist); } return proclist; } static int enable_privilege (LPCTSTR priv_name, BOOL enable_p, TOKEN_PRIVILEGES *old_priv) { TOKEN_PRIVILEGES priv; DWORD priv_size = sizeof (priv); DWORD opriv_size = sizeof (*old_priv); HANDLE h_token = NULL; HANDLE h_thread = GetCurrentThread (); int ret_val = 0; BOOL res; res = open_thread_token (h_thread, TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, FALSE, &h_token); if (!res && GetLastError () == ERROR_NO_TOKEN) { if (impersonate_self (SecurityImpersonation)) res = open_thread_token (h_thread, TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, FALSE, &h_token); } if (res) { priv.PrivilegeCount = 1; priv.Privileges[0].Attributes = enable_p ? SE_PRIVILEGE_ENABLED : 0; LookupPrivilegeValue (NULL, priv_name, &priv.Privileges[0].Luid); if (AdjustTokenPrivileges (h_token, FALSE, &priv, priv_size, old_priv, &opriv_size) && GetLastError () != ERROR_NOT_ALL_ASSIGNED) ret_val = 1; } if (h_token) CloseHandle (h_token); return ret_val; } static int restore_privilege (TOKEN_PRIVILEGES *priv) { DWORD priv_size = sizeof (*priv); HANDLE h_token = NULL; int ret_val = 0; if (open_thread_token (GetCurrentThread (), TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, FALSE, &h_token)) { if (AdjustTokenPrivileges (h_token, FALSE, priv, priv_size, NULL, NULL) && GetLastError () != ERROR_NOT_ALL_ASSIGNED) ret_val = 1; } if (h_token) CloseHandle (h_token); return ret_val; } static Lisp_Object ltime (long time_sec, long time_usec) { return list3 (make_number ((time_sec >> 16) & 0xffff), make_number (time_sec & 0xffff), make_number (time_usec)); } #define U64_TO_LISP_TIME(time) ltime ((time) / 1000000L, (time) % 1000000L) static int process_times (HANDLE h_proc, Lisp_Object *ctime, Lisp_Object *etime, Lisp_Object *stime, Lisp_Object *utime, Lisp_Object *ttime, double *pcpu) { FILETIME ft_creation, ft_exit, ft_kernel, ft_user, ft_current; ULONGLONG tem1, tem2, tem3, tem; if (!h_proc || !get_process_times_fn || !(*get_process_times_fn) (h_proc, &ft_creation, &ft_exit, &ft_kernel, &ft_user)) return 0; GetSystemTimeAsFileTime (&ft_current); FILETIME_TO_U64 (tem1, ft_kernel); tem1 /= 10L; *stime = U64_TO_LISP_TIME (tem1); FILETIME_TO_U64 (tem2, ft_user); tem2 /= 10L; *utime = U64_TO_LISP_TIME (tem2); tem3 = tem1 + tem2; *ttime = U64_TO_LISP_TIME (tem3); FILETIME_TO_U64 (tem, ft_creation); /* Process no 4 (System) returns zero creation time. */ if (tem) tem = (tem - utc_base) / 10L; *ctime = U64_TO_LISP_TIME (tem); if (tem) { FILETIME_TO_U64 (tem3, ft_current); tem = (tem3 - utc_base) / 10L - tem; } *etime = U64_TO_LISP_TIME (tem); if (tem) { *pcpu = 100.0 * (tem1 + tem2) / tem; if (*pcpu > 100) *pcpu = 100.0; } else *pcpu = 0; return 1; } Lisp_Object system_process_attributes (Lisp_Object pid) { struct gcpro gcpro1, gcpro2, gcpro3; Lisp_Object attrs = Qnil; Lisp_Object cmd_str, decoded_cmd, tem; HANDLE h_snapshot, h_proc; DWORD proc_id; int found_proc = 0; char uname[UNLEN+1], gname[GNLEN+1], domain[1025]; DWORD ulength = sizeof (uname), dlength = sizeof (domain), needed; DWORD glength = sizeof (gname); HANDLE token = NULL; SID_NAME_USE user_type; unsigned char *buf = NULL; DWORD blen = 0; TOKEN_USER user_token; TOKEN_PRIMARY_GROUP group_token; unsigned euid; unsigned egid; PROCESS_MEMORY_COUNTERS mem; PROCESS_MEMORY_COUNTERS_EX mem_ex; DWORD minrss, maxrss; MEMORYSTATUS memst; MEMORY_STATUS_EX memstex; double totphys = 0.0; Lisp_Object ctime, stime, utime, etime, ttime; double pcpu; BOOL result = FALSE; CHECK_NUMBER_OR_FLOAT (pid); proc_id = FLOATP (pid) ? XFLOAT_DATA (pid) : XINT (pid); h_snapshot = create_toolhelp32_snapshot (TH32CS_SNAPPROCESS, 0); GCPRO3 (attrs, decoded_cmd, tem); if (h_snapshot != INVALID_HANDLE_VALUE) { PROCESSENTRY32 pe; BOOL res; pe.dwSize = sizeof (PROCESSENTRY32); for (res = process32_first (h_snapshot, &pe); res; res = process32_next (h_snapshot, &pe)) { if (proc_id == pe.th32ProcessID) { if (proc_id == 0) decoded_cmd = build_string ("Idle"); else { /* Decode the command name from locale-specific encoding. */ cmd_str = make_unibyte_string (pe.szExeFile, strlen (pe.szExeFile)); decoded_cmd = code_convert_string_norecord (cmd_str, Vlocale_coding_system, 0); } attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (pe.th32ParentProcessID)), attrs); attrs = Fcons (Fcons (Qpri, make_number (pe.pcPriClassBase)), attrs); attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (pe.cntThreads)), attrs); found_proc = 1; break; } } CloseHandle (h_snapshot); } if (!found_proc) { UNGCPRO; return Qnil; } h_proc = OpenProcess (PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, proc_id); /* If we were denied a handle to the process, try again after enabling the SeDebugPrivilege in our process. */ if (!h_proc) { TOKEN_PRIVILEGES priv_current; if (enable_privilege (SE_DEBUG_NAME, TRUE, &priv_current)) { h_proc = OpenProcess (PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, proc_id); restore_privilege (&priv_current); revert_to_self (); } } if (h_proc) { result = open_process_token (h_proc, TOKEN_QUERY, &token); if (result) { result = get_token_information (token, TokenUser, NULL, 0, &blen); if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) { buf = xmalloc (blen); result = get_token_information (token, TokenUser, (LPVOID)buf, blen, &needed); if (result) { memcpy (&user_token, buf, sizeof (user_token)); if (!w32_cached_id (user_token.User.Sid, &euid, uname)) { euid = get_rid (user_token.User.Sid); result = lookup_account_sid (NULL, user_token.User.Sid, uname, &ulength, domain, &dlength, &user_type); if (result) w32_add_to_cache (user_token.User.Sid, euid, uname); else { strcpy (uname, "unknown"); result = TRUE; } } ulength = strlen (uname); } } } if (result) { /* Determine a reasonable euid and gid values. */ if (xstrcasecmp ("administrator", uname) == 0) { euid = 500; /* well-known Administrator uid */ egid = 513; /* well-known None gid */ } else { /* Get group id and name. */ result = get_token_information (token, TokenPrimaryGroup, (LPVOID)buf, blen, &needed); if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) { buf = xrealloc (buf, blen = needed); result = get_token_information (token, TokenPrimaryGroup, (LPVOID)buf, blen, &needed); } if (result) { memcpy (&group_token, buf, sizeof (group_token)); if (!w32_cached_id (group_token.PrimaryGroup, &egid, gname)) { egid = get_rid (group_token.PrimaryGroup); dlength = sizeof (domain); result = lookup_account_sid (NULL, group_token.PrimaryGroup, gname, &glength, NULL, &dlength, &user_type); if (result) w32_add_to_cache (group_token.PrimaryGroup, egid, gname); else { strcpy (gname, "None"); result = TRUE; } } glength = strlen (gname); } } } xfree (buf); } if (!result) { if (!is_windows_9x ()) { /* We couldn't open the process token, presumably because of insufficient access rights. Assume this process is run by the system. */ strcpy (uname, "SYSTEM"); strcpy (gname, "None"); euid = 18; /* SYSTEM */ egid = 513; /* None */ glength = strlen (gname); ulength = strlen (uname); } /* If we are running under Windows 9X, where security calls are not supported, we assume all processes are run by the current user. */ else if (GetUserName (uname, &ulength)) { if (xstrcasecmp ("administrator", uname) == 0) euid = 0; else euid = 123; egid = euid; strcpy (gname, "None"); glength = strlen (gname); ulength = strlen (uname); } else { euid = 123; egid = 123; strcpy (uname, "administrator"); ulength = strlen (uname); strcpy (gname, "None"); glength = strlen (gname); } if (token) CloseHandle (token); } attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (euid)), attrs); tem = make_unibyte_string (uname, ulength); attrs = Fcons (Fcons (Quser, code_convert_string_norecord (tem, Vlocale_coding_system, 0)), attrs); attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (egid)), attrs); tem = make_unibyte_string (gname, glength); attrs = Fcons (Fcons (Qgroup, code_convert_string_norecord (tem, Vlocale_coding_system, 0)), attrs); if (global_memory_status_ex (&memstex)) #if __GNUC__ || (defined (_MSC_VER) && _MSC_VER >= 1300) totphys = memstex.ullTotalPhys / 1024.0; #else /* Visual Studio 6 cannot convert an unsigned __int64 type to double, so we need to do this for it... */ { DWORD tot_hi = memstex.ullTotalPhys >> 32; DWORD tot_md = (memstex.ullTotalPhys & 0x00000000ffffffff) >> 10; DWORD tot_lo = memstex.ullTotalPhys % 1024; totphys = tot_hi * 4194304.0 + tot_md + tot_lo / 1024.0; } #endif /* __GNUC__ || _MSC_VER >= 1300 */ else if (global_memory_status (&memst)) totphys = memst.dwTotalPhys / 1024.0; if (h_proc && get_process_memory_info (h_proc, (PROCESS_MEMORY_COUNTERS *)&mem_ex, sizeof (mem_ex))) { DWORD rss = mem_ex.WorkingSetSize / 1024; attrs = Fcons (Fcons (Qmajflt, make_fixnum_or_float (mem_ex.PageFaultCount)), attrs); attrs = Fcons (Fcons (Qvsize, make_fixnum_or_float (mem_ex.PrivateUsage / 1024)), attrs); attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (rss)), attrs); if (totphys) attrs = Fcons (Fcons (Qpmem, make_float (100. * rss / totphys)), attrs); } else if (h_proc && get_process_memory_info (h_proc, &mem, sizeof (mem))) { DWORD rss = mem_ex.WorkingSetSize / 1024; attrs = Fcons (Fcons (Qmajflt, make_fixnum_or_float (mem.PageFaultCount)), attrs); attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (rss)), attrs); if (totphys) attrs = Fcons (Fcons (Qpmem, make_float (100. * rss / totphys)), attrs); } else if (h_proc && get_process_working_set_size (h_proc, &minrss, &maxrss)) { DWORD rss = maxrss / 1024; attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (maxrss / 1024)), attrs); if (totphys) attrs = Fcons (Fcons (Qpmem, make_float (100. * rss / totphys)), attrs); } if (process_times (h_proc, &ctime, &etime, &stime, &utime, &ttime, &pcpu)) { attrs = Fcons (Fcons (Qutime, utime), attrs); attrs = Fcons (Fcons (Qstime, stime), attrs); attrs = Fcons (Fcons (Qtime, ttime), attrs); attrs = Fcons (Fcons (Qstart, ctime), attrs); attrs = Fcons (Fcons (Qetime, etime), attrs); attrs = Fcons (Fcons (Qpcpu, make_float (pcpu)), attrs); } /* FIXME: Retrieve command line by walking the PEB of the process. */ if (h_proc) CloseHandle (h_proc); UNGCPRO; return attrs; } /* Wrappers for winsock functions to map between our file descriptors and winsock's handles; also set h_errno for convenience. To allow Emacs to run on systems which don't have winsock support installed, we dynamically link to winsock on startup if present, and otherwise provide the minimum necessary functionality (eg. gethostname). */ /* function pointers for relevant socket functions */ int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); void (PASCAL *pfn_WSASetLastError) (int iError); int (PASCAL *pfn_WSAGetLastError) (void); int (PASCAL *pfn_WSAEventSelect) (SOCKET s, HANDLE hEventObject, long lNetworkEvents); HANDLE (PASCAL *pfn_WSACreateEvent) (void); int (PASCAL *pfn_WSACloseEvent) (HANDLE hEvent); int (PASCAL *pfn_socket) (int af, int type, int protocol); int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); int (PASCAL *pfn_closesocket) (SOCKET s); int (PASCAL *pfn_shutdown) (SOCKET s, int how); int (PASCAL *pfn_WSACleanup) (void); u_short (PASCAL *pfn_htons) (u_short hostshort); u_short (PASCAL *pfn_ntohs) (u_short netshort); unsigned long (PASCAL *pfn_inet_addr) (const char * cp); int (PASCAL *pfn_gethostname) (char * name, int namelen); struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); int (PASCAL *pfn_getpeername) (SOCKET s, struct sockaddr *addr, int * namelen); int (PASCAL *pfn_setsockopt) (SOCKET s, int level, int optname, const char * optval, int optlen); int (PASCAL *pfn_listen) (SOCKET s, int backlog); int (PASCAL *pfn_getsockname) (SOCKET s, struct sockaddr * name, int * namelen); SOCKET (PASCAL *pfn_accept) (SOCKET s, struct sockaddr * addr, int * addrlen); int (PASCAL *pfn_recvfrom) (SOCKET s, char * buf, int len, int flags, struct sockaddr * from, int * fromlen); int (PASCAL *pfn_sendto) (SOCKET s, const char * buf, int len, int flags, const struct sockaddr * to, int tolen); /* SetHandleInformation is only needed to make sockets non-inheritable. */ BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); #ifndef HANDLE_FLAG_INHERIT #define HANDLE_FLAG_INHERIT 1 #endif HANDLE winsock_lib; static int winsock_inuse; BOOL term_winsock (void) { if (winsock_lib != NULL && winsock_inuse == 0) { /* Not sure what would cause WSAENETDOWN, or even if it can happen after WSAStartup returns successfully, but it seems reasonable to allow unloading winsock anyway in that case. */ if (pfn_WSACleanup () == 0 || pfn_WSAGetLastError () == WSAENETDOWN) { if (FreeLibrary (winsock_lib)) winsock_lib = NULL; return TRUE; } } return FALSE; } BOOL init_winsock (int load_now) { WSADATA winsockData; if (winsock_lib != NULL) return TRUE; pfn_SetHandleInformation = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), "SetHandleInformation"); winsock_lib = LoadLibrary ("Ws2_32.dll"); if (winsock_lib != NULL) { /* dynamically link to socket functions */ #define LOAD_PROC(fn) \ if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ goto fail; LOAD_PROC (WSAStartup); LOAD_PROC (WSASetLastError); LOAD_PROC (WSAGetLastError); LOAD_PROC (WSAEventSelect); LOAD_PROC (WSACreateEvent); LOAD_PROC (WSACloseEvent); LOAD_PROC (socket); LOAD_PROC (bind); LOAD_PROC (connect); LOAD_PROC (ioctlsocket); LOAD_PROC (recv); LOAD_PROC (send); LOAD_PROC (closesocket); LOAD_PROC (shutdown); LOAD_PROC (htons); LOAD_PROC (ntohs); LOAD_PROC (inet_addr); LOAD_PROC (gethostname); LOAD_PROC (gethostbyname); LOAD_PROC (getservbyname); LOAD_PROC (getpeername); LOAD_PROC (WSACleanup); LOAD_PROC (setsockopt); LOAD_PROC (listen); LOAD_PROC (getsockname); LOAD_PROC (accept); LOAD_PROC (recvfrom); LOAD_PROC (sendto); #undef LOAD_PROC /* specify version 1.1 of winsock */ if (pfn_WSAStartup (0x101, &winsockData) == 0) { if (winsockData.wVersion != 0x101) goto fail; if (!load_now) { /* Report that winsock exists and is usable, but leave socket functions disabled. I am assuming that calling WSAStartup does not require any network interaction, and in particular does not cause or require a dial-up connection to be established. */ pfn_WSACleanup (); FreeLibrary (winsock_lib); winsock_lib = NULL; } winsock_inuse = 0; return TRUE; } fail: FreeLibrary (winsock_lib); winsock_lib = NULL; } return FALSE; } int h_errno = 0; /* function to set h_errno for compatibility; map winsock error codes to normal system codes where they overlap (non-overlapping definitions are already in */ static void set_errno (void) { if (winsock_lib == NULL) h_errno = EINVAL; else h_errno = pfn_WSAGetLastError (); switch (h_errno) { case WSAEACCES: h_errno = EACCES; break; case WSAEBADF: h_errno = EBADF; break; case WSAEFAULT: h_errno = EFAULT; break; case WSAEINTR: h_errno = EINTR; break; case WSAEINVAL: h_errno = EINVAL; break; case WSAEMFILE: h_errno = EMFILE; break; case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; } errno = h_errno; } static void check_errno (void) { if (h_errno == 0 && winsock_lib != NULL) pfn_WSASetLastError (0); } /* Extend strerror to handle the winsock-specific error codes. */ struct { int errnum; char * msg; } _wsa_errlist[] = { {WSAEINTR , "Interrupted function call"}, {WSAEBADF , "Bad file descriptor"}, {WSAEACCES , "Permission denied"}, {WSAEFAULT , "Bad address"}, {WSAEINVAL , "Invalid argument"}, {WSAEMFILE , "Too many open files"}, {WSAEWOULDBLOCK , "Resource temporarily unavailable"}, {WSAEINPROGRESS , "Operation now in progress"}, {WSAEALREADY , "Operation already in progress"}, {WSAENOTSOCK , "Socket operation on non-socket"}, {WSAEDESTADDRREQ , "Destination address required"}, {WSAEMSGSIZE , "Message too long"}, {WSAEPROTOTYPE , "Protocol wrong type for socket"}, {WSAENOPROTOOPT , "Bad protocol option"}, {WSAEPROTONOSUPPORT , "Protocol not supported"}, {WSAESOCKTNOSUPPORT , "Socket type not supported"}, {WSAEOPNOTSUPP , "Operation not supported"}, {WSAEPFNOSUPPORT , "Protocol family not supported"}, {WSAEAFNOSUPPORT , "Address family not supported by protocol family"}, {WSAEADDRINUSE , "Address already in use"}, {WSAEADDRNOTAVAIL , "Cannot assign requested address"}, {WSAENETDOWN , "Network is down"}, {WSAENETUNREACH , "Network is unreachable"}, {WSAENETRESET , "Network dropped connection on reset"}, {WSAECONNABORTED , "Software caused connection abort"}, {WSAECONNRESET , "Connection reset by peer"}, {WSAENOBUFS , "No buffer space available"}, {WSAEISCONN , "Socket is already connected"}, {WSAENOTCONN , "Socket is not connected"}, {WSAESHUTDOWN , "Cannot send after socket shutdown"}, {WSAETOOMANYREFS , "Too many references"}, /* not sure */ {WSAETIMEDOUT , "Connection timed out"}, {WSAECONNREFUSED , "Connection refused"}, {WSAELOOP , "Network loop"}, /* not sure */ {WSAENAMETOOLONG , "Name is too long"}, {WSAEHOSTDOWN , "Host is down"}, {WSAEHOSTUNREACH , "No route to host"}, {WSAENOTEMPTY , "Buffer not empty"}, /* not sure */ {WSAEPROCLIM , "Too many processes"}, {WSAEUSERS , "Too many users"}, /* not sure */ {WSAEDQUOT , "Double quote in host name"}, /* really not sure */ {WSAESTALE , "Data is stale"}, /* not sure */ {WSAEREMOTE , "Remote error"}, /* not sure */ {WSASYSNOTREADY , "Network subsystem is unavailable"}, {WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range"}, {WSANOTINITIALISED , "Winsock not initialized successfully"}, {WSAEDISCON , "Graceful shutdown in progress"}, #ifdef WSAENOMORE {WSAENOMORE , "No more operations allowed"}, /* not sure */ {WSAECANCELLED , "Operation cancelled"}, /* not sure */ {WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider"}, {WSAEINVALIDPROVIDER , "Invalid service provider version number"}, {WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider"}, {WSASYSCALLFAILURE , "System call failure"}, {WSASERVICE_NOT_FOUND , "Service not found"}, /* not sure */ {WSATYPE_NOT_FOUND , "Class type not found"}, {WSA_E_NO_MORE , "No more resources available"}, /* really not sure */ {WSA_E_CANCELLED , "Operation already cancelled"}, /* really not sure */ {WSAEREFUSED , "Operation refused"}, /* not sure */ #endif {WSAHOST_NOT_FOUND , "Host not found"}, {WSATRY_AGAIN , "Authoritative host not found during name lookup"}, {WSANO_RECOVERY , "Non-recoverable error during name lookup"}, {WSANO_DATA , "Valid name, no data record of requested type"}, {-1, NULL} }; char * sys_strerror (int error_no) { int i; static char unknown_msg[40]; if (error_no >= 0 && error_no < sys_nerr) return sys_errlist[error_no]; for (i = 0; _wsa_errlist[i].errnum >= 0; i++) if (_wsa_errlist[i].errnum == error_no) return _wsa_errlist[i].msg; sprintf (unknown_msg, "Unidentified error: %d", error_no); return unknown_msg; } /* [andrewi 3-May-96] I've had conflicting results using both methods, but I believe the method of keeping the socket handle separate (and insuring it is not inheritable) is the correct one. */ #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) static int socket_to_fd (SOCKET s); int sys_socket (int af, int type, int protocol) { SOCKET s; if (winsock_lib == NULL) { h_errno = ENETDOWN; return INVALID_SOCKET; } check_errno (); /* call the real socket function */ s = pfn_socket (af, type, protocol); if (s != INVALID_SOCKET) return socket_to_fd (s); set_errno (); return -1; } /* Convert a SOCKET to a file descriptor. */ static int socket_to_fd (SOCKET s) { int fd; child_process * cp; /* Although under NT 3.5 _open_osfhandle will accept a socket handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, that does not work under NT 3.1. However, we can get the same effect by using a backdoor function to replace an existing descriptor handle with the one we want. */ /* allocate a file descriptor (with appropriate flags) */ fd = _open ("NUL:", _O_RDWR); if (fd >= 0) { /* Make a non-inheritable copy of the socket handle. Note that it is possible that sockets aren't actually kernel handles, which appears to be the case on Windows 9x when the MS Proxy winsock client is installed. */ { /* Apparently there is a bug in NT 3.51 with some service packs, which prevents using DuplicateHandle to make a socket handle non-inheritable (causes WSACleanup to hang). The work-around is to use SetHandleInformation instead if it is available and implemented. */ if (pfn_SetHandleInformation) { pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); } else { HANDLE parent = GetCurrentProcess (); HANDLE new_s = INVALID_HANDLE_VALUE; if (DuplicateHandle (parent, (HANDLE) s, parent, &new_s, 0, FALSE, DUPLICATE_SAME_ACCESS)) { /* It is possible that DuplicateHandle succeeds even though the socket wasn't really a kernel handle, because a real handle has the same value. So test whether the new handle really is a socket. */ long nonblocking = 0; if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) { pfn_closesocket (s); s = (SOCKET) new_s; } else { CloseHandle (new_s); } } } } fd_info[fd].hnd = (HANDLE) s; /* set our own internal flags */ fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; cp = new_child (); if (cp) { cp->fd = fd; cp->status = STATUS_READ_ACKNOWLEDGED; /* attach child_process to fd_info */ if (fd_info[ fd ].cp != NULL) { DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); abort (); } fd_info[ fd ].cp = cp; /* success! */ winsock_inuse++; /* count open sockets */ return fd; } /* clean up */ _close (fd); } pfn_closesocket (s); h_errno = EMFILE; return -1; } int sys_bind (int s, const struct sockaddr * addr, int namelen) { if (winsock_lib == NULL) { h_errno = ENOTSOCK; return SOCKET_ERROR; } check_errno (); if (fd_info[s].flags & FILE_SOCKET) { int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); if (rc == SOCKET_ERROR) set_errno (); return rc; } h_errno = ENOTSOCK; return SOCKET_ERROR; } int sys_connect (int s, const struct sockaddr * name, int namelen) { if (winsock_lib == NULL) { h_errno = ENOTSOCK; return SOCKET_ERROR; } check_errno (); if (fd_info[s].flags & FILE_SOCKET) { int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); if (rc == SOCKET_ERROR) set_errno (); return rc; } h_errno = ENOTSOCK; return SOCKET_ERROR; } u_short sys_htons (u_short hostshort) { return (winsock_lib != NULL) ? pfn_htons (hostshort) : hostshort; } u_short sys_ntohs (u_short netshort) { return (winsock_lib != NULL) ? pfn_ntohs (netshort) : netshort; } unsigned long sys_inet_addr (const char * cp) { return (winsock_lib != NULL) ? pfn_inet_addr (cp) : INADDR_NONE; } int sys_gethostname (char * name, int namelen) { if (winsock_lib != NULL) return pfn_gethostname (name, namelen); if (namelen > MAX_COMPUTERNAME_LENGTH) return !GetComputerName (name, (DWORD *)&namelen); h_errno = EFAULT; return SOCKET_ERROR; } struct hostent * sys_gethostbyname (const char * name) { struct hostent * host; if (winsock_lib == NULL) { h_errno = ENETDOWN; return NULL; } check_errno (); host = pfn_gethostbyname (name); if (!host) set_errno (); return host; } struct servent * sys_getservbyname (const char * name, const char * proto) { struct servent * serv; if (winsock_lib == NULL) { h_errno = ENETDOWN; return NULL; } check_errno (); serv = pfn_getservbyname (name, proto); if (!serv) set_errno (); return serv; } int sys_getpeername (int s, struct sockaddr *addr, int * namelen) { if (winsock_lib == NULL) { h_errno = ENETDOWN; return SOCKET_ERROR; } check_errno (); if (fd_info[s].flags & FILE_SOCKET) { int rc = pfn_getpeername (SOCK_HANDLE (s), addr, namelen); if (rc == SOCKET_ERROR) set_errno (); return rc; } h_errno = ENOTSOCK; return SOCKET_ERROR; } int sys_shutdown (int s, int how) { if (winsock_lib == NULL) { h_errno = ENETDOWN; return SOCKET_ERROR; } check_errno (); if (fd_info[s].flags & FILE_SOCKET) { int rc = pfn_shutdown (SOCK_HANDLE (s), how); if (rc == SOCKET_ERROR) set_errno (); return rc; } h_errno = ENOTSOCK; return SOCKET_ERROR; } int sys_setsockopt (int s, int level, int optname, const void * optval, int optlen) { if (winsock_lib == NULL) { h_errno = ENETDOWN; return SOCKET_ERROR; } check_errno (); if (fd_info[s].flags & FILE_SOCKET) { int rc = pfn_setsockopt (SOCK_HANDLE (s), level, optname, (const char *)optval, optlen); if (rc == SOCKET_ERROR) set_errno (); return rc; } h_errno = ENOTSOCK; return SOCKET_ERROR; } int sys_listen (int s, int backlog) { if (winsock_lib == NULL) { h_errno = ENETDOWN; return SOCKET_ERROR; } check_errno (); if (fd_info[s].flags & FILE_SOCKET) { int rc = pfn_listen (SOCK_HANDLE (s), backlog); if (rc == SOCKET_ERROR) set_errno (); else fd_info[s].flags |= FILE_LISTEN; return rc; } h_errno = ENOTSOCK; return SOCKET_ERROR; } int sys_getsockname (int s, struct sockaddr * name, int * namelen) { if (winsock_lib == NULL) { h_errno = ENETDOWN; return SOCKET_ERROR; } check_errno (); if (fd_info[s].flags & FILE_SOCKET) { int rc = pfn_getsockname (SOCK_HANDLE (s), name, namelen); if (rc == SOCKET_ERROR) set_errno (); return rc; } h_errno = ENOTSOCK; return SOCKET_ERROR; } int sys_accept (int s, struct sockaddr * addr, int * addrlen) { if (winsock_lib == NULL) { h_errno = ENETDOWN; return -1; } check_errno (); if (fd_info[s].flags & FILE_LISTEN) { SOCKET t = pfn_accept (SOCK_HANDLE (s), addr, addrlen); int fd = -1; if (t == INVALID_SOCKET) set_errno (); else fd = socket_to_fd (t); fd_info[s].cp->status = STATUS_READ_ACKNOWLEDGED; ResetEvent (fd_info[s].cp->char_avail); return fd; } h_errno = ENOTSOCK; return -1; } int sys_recvfrom (int s, char * buf, int len, int flags, struct sockaddr * from, int * fromlen) { if (winsock_lib == NULL) { h_errno = ENETDOWN; return SOCKET_ERROR; } check_errno (); if (fd_info[s].flags & FILE_SOCKET) { int rc = pfn_recvfrom (SOCK_HANDLE (s), buf, len, flags, from, fromlen); if (rc == SOCKET_ERROR) set_errno (); return rc; } h_errno = ENOTSOCK; return SOCKET_ERROR; } int sys_sendto (int s, const char * buf, int len, int flags, const struct sockaddr * to, int tolen) { if (winsock_lib == NULL) { h_errno = ENETDOWN; return SOCKET_ERROR; } check_errno (); if (fd_info[s].flags & FILE_SOCKET) { int rc = pfn_sendto (SOCK_HANDLE (s), buf, len, flags, to, tolen); if (rc == SOCKET_ERROR) set_errno (); return rc; } h_errno = ENOTSOCK; return SOCKET_ERROR; } /* Windows does not have an fcntl function. Provide an implementation solely for making sockets non-blocking. */ int fcntl (int s, int cmd, int options) { if (winsock_lib == NULL) { h_errno = ENETDOWN; return -1; } check_errno (); if (fd_info[s].flags & FILE_SOCKET) { if (cmd == F_SETFL && options == O_NDELAY) { unsigned long nblock = 1; int rc = pfn_ioctlsocket (SOCK_HANDLE (s), FIONBIO, &nblock); if (rc == SOCKET_ERROR) set_errno (); /* Keep track of the fact that we set this to non-blocking. */ fd_info[s].flags |= FILE_NDELAY; return rc; } else { h_errno = EINVAL; return SOCKET_ERROR; } } h_errno = ENOTSOCK; return SOCKET_ERROR; } /* Shadow main io functions: we need to handle pipes and sockets more intelligently, and implement non-blocking mode as well. */ int sys_close (int fd) { int rc; if (fd < 0) { errno = EBADF; return -1; } if (fd < MAXDESC && fd_info[fd].cp) { child_process * cp = fd_info[fd].cp; fd_info[fd].cp = NULL; if (CHILD_ACTIVE (cp)) { /* if last descriptor to active child_process then cleanup */ int i; for (i = 0; i < MAXDESC; i++) { if (i == fd) continue; if (fd_info[i].cp == cp) break; } if (i == MAXDESC) { if (fd_info[fd].flags & FILE_SOCKET) { if (winsock_lib == NULL) abort (); pfn_shutdown (SOCK_HANDLE (fd), 2); rc = pfn_closesocket (SOCK_HANDLE (fd)); winsock_inuse--; /* count open sockets */ } delete_child (cp); } } } /* Note that sockets do not need special treatment here (at least on NT and Windows 95 using the standard tcp/ip stacks) - it appears that closesocket is equivalent to CloseHandle, which is to be expected because socket handles are fully fledged kernel handles. */ rc = _close (fd); if (rc == 0 && fd < MAXDESC) fd_info[fd].flags = 0; return rc; } int sys_dup (int fd) { int new_fd; new_fd = _dup (fd); if (new_fd >= 0 && new_fd < MAXDESC) { /* duplicate our internal info as well */ fd_info[new_fd] = fd_info[fd]; } return new_fd; } int sys_dup2 (int src, int dst) { int rc; if (dst < 0 || dst >= MAXDESC) { errno = EBADF; return -1; } /* make sure we close the destination first if it's a pipe or socket */ if (src != dst && fd_info[dst].flags != 0) sys_close (dst); rc = _dup2 (src, dst); if (rc == 0) { /* duplicate our internal info as well */ fd_info[dst] = fd_info[src]; } return rc; } /* Unix pipe() has only one arg */ int sys_pipe (int * phandles) { int rc; unsigned flags; /* make pipe handles non-inheritable; when we spawn a child, we replace the relevant handle with an inheritable one. Also put pipes into binary mode; we will do text mode translation ourselves if required. */ rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); if (rc == 0) { /* Protect against overflow, since Windows can open more handles than our fd_info array has room for. */ if (phandles[0] >= MAXDESC || phandles[1] >= MAXDESC) { _close (phandles[0]); _close (phandles[1]); rc = -1; } else { flags = FILE_PIPE | FILE_READ | FILE_BINARY; fd_info[phandles[0]].flags = flags; flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; fd_info[phandles[1]].flags = flags; } } return rc; } /* Function to do blocking read of one byte, needed to implement select. It is only allowed on sockets and pipes. */ int _sys_read_ahead (int fd) { child_process * cp; int rc; if (fd < 0 || fd >= MAXDESC) return STATUS_READ_ERROR; cp = fd_info[fd].cp; if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) return STATUS_READ_ERROR; if ((fd_info[fd].flags & (FILE_PIPE | FILE_SERIAL | FILE_SOCKET)) == 0 || (fd_info[fd].flags & FILE_READ) == 0) { DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe, serial port, or socket!\n", fd)); abort (); } cp->status = STATUS_READ_IN_PROGRESS; if (fd_info[fd].flags & FILE_PIPE) { rc = _read (fd, &cp->chr, sizeof (char)); /* Give subprocess time to buffer some more output for us before reporting that input is available; we need this because Windows 95 connects DOS programs to pipes by making the pipe appear to be the normal console stdout - as a result most DOS programs will write to stdout without buffering, ie. one character at a time. Even some W32 programs do this - "dir" in a command shell on NT is very slow if we don't do this. */ if (rc > 0) { int wait = w32_pipe_read_delay; if (wait > 0) Sleep (wait); else if (wait < 0) while (++wait <= 0) /* Yield remainder of our time slice, effectively giving a temporary priority boost to the child process. */ Sleep (0); } } else if (fd_info[fd].flags & FILE_SERIAL) { HANDLE hnd = fd_info[fd].hnd; OVERLAPPED *ovl = &fd_info[fd].cp->ovl_read; COMMTIMEOUTS ct; /* Configure timeouts for blocking read. */ if (!GetCommTimeouts (hnd, &ct)) return STATUS_READ_ERROR; ct.ReadIntervalTimeout = 0; ct.ReadTotalTimeoutMultiplier = 0; ct.ReadTotalTimeoutConstant = 0; if (!SetCommTimeouts (hnd, &ct)) return STATUS_READ_ERROR; if (!ReadFile (hnd, &cp->chr, sizeof (char), (DWORD*) &rc, ovl)) { if (GetLastError () != ERROR_IO_PENDING) return STATUS_READ_ERROR; if (!GetOverlappedResult (hnd, ovl, (DWORD*) &rc, TRUE)) return STATUS_READ_ERROR; } } else if (fd_info[fd].flags & FILE_SOCKET) { unsigned long nblock = 0; /* We always want this to block, so temporarily disable NDELAY. */ if (fd_info[fd].flags & FILE_NDELAY) pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); if (fd_info[fd].flags & FILE_NDELAY) { nblock = 1; pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); } } if (rc == sizeof (char)) cp->status = STATUS_READ_SUCCEEDED; else cp->status = STATUS_READ_FAILED; return cp->status; } int _sys_wait_accept (int fd) { HANDLE hEv; child_process * cp; int rc; if (fd < 0 || fd >= MAXDESC) return STATUS_READ_ERROR; cp = fd_info[fd].cp; if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) return STATUS_READ_ERROR; cp->status = STATUS_READ_FAILED; hEv = pfn_WSACreateEvent (); rc = pfn_WSAEventSelect (SOCK_HANDLE (fd), hEv, FD_ACCEPT); if (rc != SOCKET_ERROR) { rc = WaitForSingleObject (hEv, INFINITE); pfn_WSAEventSelect (SOCK_HANDLE (fd), NULL, 0); if (rc == WAIT_OBJECT_0) cp->status = STATUS_READ_SUCCEEDED; } pfn_WSACloseEvent (hEv); return cp->status; } int sys_read (int fd, char * buffer, unsigned int count) { int nchars; int to_read; DWORD waiting; char * orig_buffer = buffer; if (fd < 0) { errno = EBADF; return -1; } if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET | FILE_SERIAL)) { child_process *cp = fd_info[fd].cp; if ((fd_info[fd].flags & FILE_READ) == 0) { errno = EBADF; return -1; } nchars = 0; /* re-read CR carried over from last read */ if (fd_info[fd].flags & FILE_LAST_CR) { if (fd_info[fd].flags & FILE_BINARY) abort (); *buffer++ = 0x0d; count--; nchars++; fd_info[fd].flags &= ~FILE_LAST_CR; } /* presence of a child_process structure means we are operating in non-blocking mode - otherwise we just call _read directly. Note that the child_process structure might be missing because reap_subprocess has been called; in this case the pipe is already broken, so calling _read on it is okay. */ if (cp) { int current_status = cp->status; switch (current_status) { case STATUS_READ_FAILED: case STATUS_READ_ERROR: /* report normal EOF if nothing in buffer */ if (nchars <= 0) fd_info[fd].flags |= FILE_AT_EOF; return nchars; case STATUS_READ_READY: case STATUS_READ_IN_PROGRESS: DebPrint (("sys_read called when read is in progress\n")); errno = EWOULDBLOCK; return -1; case STATUS_READ_SUCCEEDED: /* consume read-ahead char */ *buffer++ = cp->chr; count--; nchars++; cp->status = STATUS_READ_ACKNOWLEDGED; ResetEvent (cp->char_avail); case STATUS_READ_ACKNOWLEDGED: break; default: DebPrint (("sys_read: bad status %d\n", current_status)); errno = EBADF; return -1; } if (fd_info[fd].flags & FILE_PIPE) { PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); to_read = min (waiting, (DWORD) count); if (to_read > 0) nchars += _read (fd, buffer, to_read); } else if (fd_info[fd].flags & FILE_SERIAL) { HANDLE hnd = fd_info[fd].hnd; OVERLAPPED *ovl = &fd_info[fd].cp->ovl_read; int rc = 0; COMMTIMEOUTS ct; if (count > 0) { /* Configure timeouts for non-blocking read. */ if (!GetCommTimeouts (hnd, &ct)) { errno = EIO; return -1; } ct.ReadIntervalTimeout = MAXDWORD; ct.ReadTotalTimeoutMultiplier = 0; ct.ReadTotalTimeoutConstant = 0; if (!SetCommTimeouts (hnd, &ct)) { errno = EIO; return -1; } if (!ResetEvent (ovl->hEvent)) { errno = EIO; return -1; } if (!ReadFile (hnd, buffer, count, (DWORD*) &rc, ovl)) { if (GetLastError () != ERROR_IO_PENDING) { errno = EIO; return -1; } if (!GetOverlappedResult (hnd, ovl, (DWORD*) &rc, TRUE)) { errno = EIO; return -1; } } nchars += rc; } } else /* FILE_SOCKET */ { if (winsock_lib == NULL) abort (); /* do the equivalent of a non-blocking read */ pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); if (waiting == 0 && nchars == 0) { h_errno = errno = EWOULDBLOCK; return -1; } if (waiting) { /* always use binary mode for sockets */ int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); if (res == SOCKET_ERROR) { DebPrint (("sys_read.recv failed with error %d on socket %ld\n", pfn_WSAGetLastError (), SOCK_HANDLE (fd))); set_errno (); return -1; } nchars += res; } } } else { int nread = _read (fd, buffer, count); if (nread >= 0) nchars += nread; else if (nchars == 0) nchars = nread; } if (nchars <= 0) fd_info[fd].flags |= FILE_AT_EOF; /* Perform text mode translation if required. */ else if ((fd_info[fd].flags & FILE_BINARY) == 0) { nchars = crlf_to_lf (nchars, orig_buffer); /* If buffer contains only CR, return that. To be absolutely sure we should attempt to read the next char, but in practice a CR to be followed by LF would not appear by itself in the buffer. */ if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) { fd_info[fd].flags |= FILE_LAST_CR; nchars--; } } } else nchars = _read (fd, buffer, count); return nchars; } /* From w32xfns.c */ extern HANDLE interrupt_handle; /* For now, don't bother with a non-blocking mode */ int sys_write (int fd, const void * buffer, unsigned int count) { int nchars; if (fd < 0) { errno = EBADF; return -1; } if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET | FILE_SERIAL)) { if ((fd_info[fd].flags & FILE_WRITE) == 0) { errno = EBADF; return -1; } /* Perform text mode translation if required. */ if ((fd_info[fd].flags & FILE_BINARY) == 0) { char * tmpbuf = alloca (count * 2); unsigned char * src = (void *)buffer; unsigned char * dst = tmpbuf; int nbytes = count; while (1) { unsigned char *next; /* copy next line or remaining bytes */ next = _memccpy (dst, src, '\n', nbytes); if (next) { /* copied one line ending with '\n' */ int copied = next - dst; nbytes -= copied; src += copied; /* insert '\r' before '\n' */ next[-1] = '\r'; next[0] = '\n'; dst = next + 1; count++; } else /* copied remaining partial line -> now finished */ break; } buffer = tmpbuf; } } if (fd < MAXDESC && fd_info[fd].flags & FILE_SERIAL) { HANDLE hnd = (HANDLE) _get_osfhandle (fd); OVERLAPPED *ovl = &fd_info[fd].cp->ovl_write; HANDLE wait_hnd[2] = { interrupt_handle, ovl->hEvent }; DWORD active = 0; if (!WriteFile (hnd, buffer, count, (DWORD*) &nchars, ovl)) { if (GetLastError () != ERROR_IO_PENDING) { errno = EIO; return -1; } if (detect_input_pending ()) active = MsgWaitForMultipleObjects (2, wait_hnd, FALSE, INFINITE, QS_ALLINPUT); else active = WaitForMultipleObjects (2, wait_hnd, FALSE, INFINITE); if (active == WAIT_OBJECT_0) { /* User pressed C-g, cancel write, then leave. Don't bother cleaning up as we may only get stuck in buggy drivers. */ PurgeComm (hnd, PURGE_TXABORT | PURGE_TXCLEAR); CancelIo (hnd); errno = EIO; return -1; } if (active == WAIT_OBJECT_0 + 1 && !GetOverlappedResult (hnd, ovl, (DWORD*) &nchars, TRUE)) { errno = EIO; return -1; } } } else if (fd < MAXDESC && fd_info[fd].flags & FILE_SOCKET) { unsigned long nblock = 0; if (winsock_lib == NULL) abort (); /* TODO: implement select() properly so non-blocking I/O works. */ /* For now, make sure the write blocks. */ if (fd_info[fd].flags & FILE_NDELAY) pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); /* Set the socket back to non-blocking if it was before, for other operations that support it. */ if (fd_info[fd].flags & FILE_NDELAY) { nblock = 1; pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); } if (nchars == SOCKET_ERROR) { DebPrint (("sys_write.send failed with error %d on socket %ld\n", pfn_WSAGetLastError (), SOCK_HANDLE (fd))); set_errno (); } } else { /* Some networked filesystems don't like too large writes, so break them into smaller chunks. See the Comments section of the MSDN documentation of WriteFile for details behind the choice of the value of CHUNK below. See also the thread http://thread.gmane.org/gmane.comp.version-control.git/145294 in the git mailing list. */ const unsigned char *p = buffer; const unsigned chunk = 30 * 1024 * 1024; nchars = 0; while (count > 0) { unsigned this_chunk = count < chunk ? count : chunk; int n = _write (fd, p, this_chunk); nchars += n; if (n < 0) { nchars = n; break; } else if (n < this_chunk) break; count -= n; p += n; } } return nchars; } /* The Windows CRT functions are "optimized for speed", so they don't check for timezone and DST changes if they were last called less than 1 minute ago (see http://support.microsoft.com/kb/821231). So all Emacs features that repeatedly call time functions (e.g., display-time) are in real danger of missing timezone and DST changes. Calling tzset before each localtime call fixes that. */ struct tm * sys_localtime (const time_t *t) { tzset (); return localtime (t); } /* Delayed loading of libraries. */ Lisp_Object Vlibrary_cache; /* The argument LIBRARIES is an alist that associates a symbol LIBRARY_ID, identifying an external DLL library known to Emacs, to a list of filenames under which the library is usually found. In most cases, the argument passed as LIBRARIES is the variable `dynamic-library-alist', which is initialized to a list of common library names. If the function loads the library successfully, it returns the handle of the DLL, and records the filename in the property :loaded-from of LIBRARY_ID; it returns NULL if the library could not be found, or when it was already loaded (because the handle is not recorded anywhere, and so is lost after use). It would be trivial to save the handle too in :loaded-from, but currently there's no use case for it. */ HMODULE w32_delayed_load (Lisp_Object libraries, Lisp_Object library_id) { HMODULE library_dll = NULL; CHECK_SYMBOL (library_id); if (CONSP (libraries) && NILP (Fassq (library_id, Vlibrary_cache))) { Lisp_Object found = Qnil; Lisp_Object dlls = Fassq (library_id, libraries); if (CONSP (dlls)) for (dlls = XCDR (dlls); CONSP (dlls); dlls = XCDR (dlls)) { CHECK_STRING_CAR (dlls); if (library_dll = LoadLibrary (SDATA (XCAR (dlls)))) { found = XCAR (dlls); break; } } Fput (library_id, QCloaded_from, found); } return library_dll; } static void check_windows_init_file (void) { /* A common indication that Emacs is not installed properly is when it cannot find the Windows installation file. If this file does not exist in the expected place, tell the user. */ if (!noninteractive && !inhibit_window_system) { Lisp_Object objs[2]; Lisp_Object full_load_path; Lisp_Object init_file; int fd; objs[0] = Vload_path; objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH"))); full_load_path = Fappend (2, objs); init_file = build_string ("term/w32-win"); fd = openp (full_load_path, init_file, Fget_load_suffixes (), NULL, Qnil); if (fd < 0) { Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil); char *init_file_name = SDATA (init_file); char *load_path = SDATA (load_path_print); char *buffer = alloca (1024 + strlen (init_file_name) + strlen (load_path)); sprintf (buffer, "The Emacs Windows initialization file \"%s.el\" " "could not be found in your Emacs installation. " "Emacs checked the following directories for this file:\n" "\n%s\n\n" "When Emacs cannot find this file, it usually means that it " "was not installed properly, or its distribution file was " "not unpacked properly.\nSee the README.W32 file in the " "top-level Emacs directory for more information.", init_file_name, load_path); MessageBox (NULL, buffer, "Emacs Abort Dialog", MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); /* Use the low-level Emacs abort. */ #undef abort abort (); } else { _close (fd); } } } void term_ntproc (void) { /* shutdown the socket interface if necessary */ term_winsock (); term_w32select (); } void init_ntproc (void) { /* Initialise the socket interface now if available and requested by the user by defining PRELOAD_WINSOCK; otherwise loading will be delayed until open-network-stream is called (w32-has-winsock can also be used to dynamically load or reload winsock). Conveniently, init_environment is called before us, so PRELOAD_WINSOCK can be set in the registry. */ /* Always initialize this correctly. */ winsock_lib = NULL; if (getenv ("PRELOAD_WINSOCK") != NULL) init_winsock (TRUE); /* Initial preparation for subprocess support: replace our standard handles with non-inheritable versions. */ { HANDLE parent; HANDLE stdin_save = INVALID_HANDLE_VALUE; HANDLE stdout_save = INVALID_HANDLE_VALUE; HANDLE stderr_save = INVALID_HANDLE_VALUE; parent = GetCurrentProcess (); /* ignore errors when duplicating and closing; typically the handles will be invalid when running as a gui program. */ DuplicateHandle (parent, GetStdHandle (STD_INPUT_HANDLE), parent, &stdin_save, 0, FALSE, DUPLICATE_SAME_ACCESS); DuplicateHandle (parent, GetStdHandle (STD_OUTPUT_HANDLE), parent, &stdout_save, 0, FALSE, DUPLICATE_SAME_ACCESS); DuplicateHandle (parent, GetStdHandle (STD_ERROR_HANDLE), parent, &stderr_save, 0, FALSE, DUPLICATE_SAME_ACCESS); fclose (stdin); fclose (stdout); fclose (stderr); if (stdin_save != INVALID_HANDLE_VALUE) _open_osfhandle ((long) stdin_save, O_TEXT); else _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); _fdopen (0, "r"); if (stdout_save != INVALID_HANDLE_VALUE) _open_osfhandle ((long) stdout_save, O_TEXT); else _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); _fdopen (1, "w"); if (stderr_save != INVALID_HANDLE_VALUE) _open_osfhandle ((long) stderr_save, O_TEXT); else _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); _fdopen (2, "w"); } /* unfortunately, atexit depends on implementation of malloc */ /* atexit (term_ntproc); */ signal (SIGABRT, term_ntproc); /* determine which drives are fixed, for GetCachedVolumeInformation */ { /* GetDriveType must have trailing backslash. */ char drive[] = "A:\\"; /* Loop over all possible drive letters */ while (*drive <= 'Z') { /* Record if this drive letter refers to a fixed drive. */ fixed_drives[DRIVE_INDEX (*drive)] = (GetDriveType (drive) == DRIVE_FIXED); (*drive)++; } /* Reset the volume info cache. */ volume_cache = NULL; } /* Check to see if Emacs has been installed correctly. */ check_windows_init_file (); } /* shutdown_handler ensures that buffers' autosave files are up to date when the user logs off, or the system shuts down. */ static BOOL WINAPI shutdown_handler (DWORD type) { /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */ if (type == CTRL_CLOSE_EVENT /* User closes console window. */ || type == CTRL_LOGOFF_EVENT /* User logs off. */ || type == CTRL_SHUTDOWN_EVENT) /* User shutsdown. */ { /* Shut down cleanly, making sure autosave files are up to date. */ shut_down_emacs (0, 0, Qnil); } /* Allow other handlers to handle this signal. */ return FALSE; } /* globals_of_w32 is used to initialize those global variables that must always be initialized on startup even when the global variable initialized is non zero (see the function main in emacs.c). */ void globals_of_w32 (void) { HMODULE kernel32 = GetModuleHandle ("kernel32.dll"); get_process_times_fn = (GetProcessTimes_Proc) GetProcAddress (kernel32, "GetProcessTimes"); DEFSYM (QCloaded_from, ":loaded-from"); Vlibrary_cache = Qnil; staticpro (&Vlibrary_cache); g_b_init_is_windows_9x = 0; g_b_init_open_process_token = 0; g_b_init_get_token_information = 0; g_b_init_lookup_account_sid = 0; g_b_init_get_sid_sub_authority = 0; g_b_init_get_sid_sub_authority_count = 0; g_b_init_get_file_security = 0; g_b_init_get_security_descriptor_owner = 0; g_b_init_get_security_descriptor_group = 0; g_b_init_is_valid_sid = 0; g_b_init_create_toolhelp32_snapshot = 0; g_b_init_process32_first = 0; g_b_init_process32_next = 0; g_b_init_open_thread_token = 0; g_b_init_impersonate_self = 0; g_b_init_revert_to_self = 0; g_b_init_get_process_memory_info = 0; g_b_init_get_process_working_set_size = 0; g_b_init_global_memory_status = 0; g_b_init_global_memory_status_ex = 0; g_b_init_equal_sid = 0; g_b_init_copy_sid = 0; g_b_init_get_length_sid = 0; g_b_init_get_native_system_info = 0; g_b_init_get_system_times = 0; num_of_processors = 0; /* The following sets a handler for shutdown notifications for console apps. This actually applies to Emacs in both console and GUI modes, since we had to fool windows into thinking emacs is a console application to get console mode to work. */ SetConsoleCtrlHandler (shutdown_handler, TRUE); /* "None" is the default group name on standalone workstations. */ strcpy (dflt_group_name, "None"); } /* For make-serial-process */ int serial_open (char *port) { HANDLE hnd; child_process *cp; int fd = -1; hnd = CreateFile (port, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0); if (hnd == INVALID_HANDLE_VALUE) error ("Could not open %s", port); fd = (int) _open_osfhandle ((int) hnd, 0); if (fd == -1) error ("Could not open %s", port); cp = new_child (); if (!cp) error ("Could not create child process"); cp->fd = fd; cp->status = STATUS_READ_ACKNOWLEDGED; fd_info[ fd ].hnd = hnd; fd_info[ fd ].flags |= FILE_READ | FILE_WRITE | FILE_BINARY | FILE_SERIAL; if (fd_info[ fd ].cp != NULL) { error ("fd_info[fd = %d] is already in use", fd); } fd_info[ fd ].cp = cp; cp->ovl_read.hEvent = CreateEvent (NULL, TRUE, FALSE, NULL); if (cp->ovl_read.hEvent == NULL) error ("Could not create read event"); cp->ovl_write.hEvent = CreateEvent (NULL, TRUE, FALSE, NULL); if (cp->ovl_write.hEvent == NULL) error ("Could not create write event"); return fd; } /* For serial-process-configure */ void serial_configure (struct Lisp_Process *p, Lisp_Object contact) { Lisp_Object childp2 = Qnil; Lisp_Object tem = Qnil; HANDLE hnd; DCB dcb; COMMTIMEOUTS ct; char summary[4] = "???"; /* This usually becomes "8N1". */ if ((fd_info[ p->outfd ].flags & FILE_SERIAL) == 0) error ("Not a serial process"); hnd = fd_info[ p->outfd ].hnd; childp2 = Fcopy_sequence (p->childp); /* Initialize timeouts for blocking read and blocking write. */ if (!GetCommTimeouts (hnd, &ct)) error ("GetCommTimeouts() failed"); ct.ReadIntervalTimeout = 0; ct.ReadTotalTimeoutMultiplier = 0; ct.ReadTotalTimeoutConstant = 0; ct.WriteTotalTimeoutMultiplier = 0; ct.WriteTotalTimeoutConstant = 0; if (!SetCommTimeouts (hnd, &ct)) error ("SetCommTimeouts() failed"); /* Read port attributes and prepare default configuration. */ memset (&dcb, 0, sizeof (dcb)); dcb.DCBlength = sizeof (DCB); if (!GetCommState (hnd, &dcb)) error ("GetCommState() failed"); dcb.fBinary = TRUE; dcb.fNull = FALSE; dcb.fAbortOnError = FALSE; /* dcb.XonLim and dcb.XoffLim are set by GetCommState() */ dcb.ErrorChar = 0; dcb.EofChar = 0; dcb.EvtChar = 0; /* Configure speed. */ if (!NILP (Fplist_member (contact, QCspeed))) tem = Fplist_get (contact, QCspeed); else tem = Fplist_get (p->childp, QCspeed); CHECK_NUMBER (tem); dcb.BaudRate = XINT (tem); childp2 = Fplist_put (childp2, QCspeed, tem); /* Configure bytesize. */ if (!NILP (Fplist_member (contact, QCbytesize))) tem = Fplist_get (contact, QCbytesize); else tem = Fplist_get (p->childp, QCbytesize); if (NILP (tem)) tem = make_number (8); CHECK_NUMBER (tem); if (XINT (tem) != 7 && XINT (tem) != 8) error (":bytesize must be nil (8), 7, or 8"); dcb.ByteSize = XINT (tem); summary[0] = XINT (tem) + '0'; childp2 = Fplist_put (childp2, QCbytesize, tem); /* Configure parity. */ if (!NILP (Fplist_member (contact, QCparity))) tem = Fplist_get (contact, QCparity); else tem = Fplist_get (p->childp, QCparity); if (!NILP (tem) && !EQ (tem, Qeven) && !EQ (tem, Qodd)) error (":parity must be nil (no parity), `even', or `odd'"); dcb.fParity = FALSE; dcb.Parity = NOPARITY; dcb.fErrorChar = FALSE; if (NILP (tem)) { summary[1] = 'N'; } else if (EQ (tem, Qeven)) { summary[1] = 'E'; dcb.fParity = TRUE; dcb.Parity = EVENPARITY; dcb.fErrorChar = TRUE; } else if (EQ (tem, Qodd)) { summary[1] = 'O'; dcb.fParity = TRUE; dcb.Parity = ODDPARITY; dcb.fErrorChar = TRUE; } childp2 = Fplist_put (childp2, QCparity, tem); /* Configure stopbits. */ if (!NILP (Fplist_member (contact, QCstopbits))) tem = Fplist_get (contact, QCstopbits); else tem = Fplist_get (p->childp, QCstopbits); if (NILP (tem)) tem = make_number (1); CHECK_NUMBER (tem); if (XINT (tem) != 1 && XINT (tem) != 2) error (":stopbits must be nil (1 stopbit), 1, or 2"); summary[2] = XINT (tem) + '0'; if (XINT (tem) == 1) dcb.StopBits = ONESTOPBIT; else if (XINT (tem) == 2) dcb.StopBits = TWOSTOPBITS; childp2 = Fplist_put (childp2, QCstopbits, tem); /* Configure flowcontrol. */ if (!NILP (Fplist_member (contact, QCflowcontrol))) tem = Fplist_get (contact, QCflowcontrol); else tem = Fplist_get (p->childp, QCflowcontrol); if (!NILP (tem) && !EQ (tem, Qhw) && !EQ (tem, Qsw)) error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'"); dcb.fOutxCtsFlow = FALSE; dcb.fOutxDsrFlow = FALSE; dcb.fDtrControl = DTR_CONTROL_DISABLE; dcb.fDsrSensitivity = FALSE; dcb.fTXContinueOnXoff = FALSE; dcb.fOutX = FALSE; dcb.fInX = FALSE; dcb.fRtsControl = RTS_CONTROL_DISABLE; dcb.XonChar = 17; /* Control-Q */ dcb.XoffChar = 19; /* Control-S */ if (NILP (tem)) { /* Already configured. */ } else if (EQ (tem, Qhw)) { dcb.fRtsControl = RTS_CONTROL_HANDSHAKE; dcb.fOutxCtsFlow = TRUE; } else if (EQ (tem, Qsw)) { dcb.fOutX = TRUE; dcb.fInX = TRUE; } childp2 = Fplist_put (childp2, QCflowcontrol, tem); /* Activate configuration. */ if (!SetCommState (hnd, &dcb)) error ("SetCommState() failed"); childp2 = Fplist_put (childp2, QCsummary, build_string (summary)); p->childp = childp2; } #ifdef HAVE_GNUTLS ssize_t emacs_gnutls_pull (gnutls_transport_ptr_t p, void* buf, size_t sz) { int n, sc, err; SELECT_TYPE fdset; EMACS_TIME timeout; struct Lisp_Process *process = (struct Lisp_Process *)p; int fd = process->infd; for (;;) { n = sys_read(fd, (char*)buf, sz); if (n >= 0) return n; err = errno; if (err == EWOULDBLOCK) { /* Set a small timeout. */ EMACS_SET_SECS_USECS(timeout, 1, 0); FD_ZERO (&fdset); FD_SET ((int)fd, &fdset); /* Use select with the timeout to poll the selector. */ sc = select (fd + 1, &fdset, (SELECT_TYPE *)0, (SELECT_TYPE *)0, &timeout); if (sc > 0) continue; /* Try again. */ /* Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. Also accept select return 0 as an indicator to EAGAIN. */ if (sc == 0 || errno == EWOULDBLOCK) err = EAGAIN; else err = errno; /* Other errors are just passed on. */ } emacs_gnutls_transport_set_errno (process->gnutls_state, err); return -1; } } ssize_t emacs_gnutls_push (gnutls_transport_ptr_t p, const void* buf, size_t sz) { struct Lisp_Process *process = (struct Lisp_Process *)p; int fd = process->outfd; ssize_t n = sys_write(fd, buf, sz); /* 0 or more bytes written means everything went fine. */ if (n >= 0) return n; /* Negative bytes written means we got an error in errno. Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. */ emacs_gnutls_transport_set_errno (process->gnutls_state, errno == EWOULDBLOCK ? EAGAIN : errno); return -1; } #endif /* HAVE_GNUTLS */ /* end of w32.c */