X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=src%2Fnt.c;h=63f682e7f2446dba2aba3393cb1f41fd7e633777;hb=7b4b1b26bb371112bf3e18732864bc08584127b6;hp=bd14ddcfe829ea3096b77e1049b4a89cd75f7fad;hpb=2fd9701a4f902054649dde9143a3f77809afee8f;p=chise%2Fxemacs-chise.git- diff --git a/src/nt.c b/src/nt.c index bd14ddc..63f682e 100644 --- a/src/nt.c +++ b/src/nt.c @@ -25,8 +25,6 @@ Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA /* Sync'ed with Emacs 19.34.6 by Marc Paquette */ #include - -#undef signal #define getwd _getwd #include "lisp.h" #undef getwd @@ -35,23 +33,12 @@ Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA #include "syssignal.h" #include "sysproc.h" #include "sysfile.h" +#include "syspwd.h" +#include "sysdir.h" -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include +#include "syswindows.h" #include "nt.h" -#include #include "ntheap.h" @@ -82,20 +69,6 @@ getwd (char *dir) #endif } -/* Emulate getloadavg. */ -int -getloadavg (double loadavg[], int nelem) -{ - int i; - - /* A faithful emulation is going to have to be saved for a rainy day. */ - for (i = 0; i < nelem; i++) - { - loadavg[i] = 0.0; - } - return i; -} - /* Emulate getpwuid, getpwnam and others. */ #define PASSWD_FIELD_SIZE 256 @@ -1076,16 +1049,22 @@ opendir (const char *filename) return dirp; } -void +int closedir (DIR *dirp) { + BOOL retval; + /* If we have a find-handle open, close it. */ if (dir_find_handle != INVALID_HANDLE_VALUE) { - FindClose (dir_find_handle); + retval = FindClose (dir_find_handle); dir_find_handle = INVALID_HANDLE_VALUE; } xfree (dirp); + if (retval) + return 0; + else + return -1; } struct direct * @@ -1115,7 +1094,7 @@ readdir (DIR *dirp) } /* Emacs never uses this value, so don't bother making it match - value returned by stat(). */ + value returned by xemacs_stat(). */ dir_static.d_ino = 1; dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + @@ -1237,7 +1216,7 @@ convert_time (FILETIME ft) } #else -#if defined(__MINGW32__) && CYGWIN_VERSION_DLL_MAJOR <= 21 +#if defined(MINGW) && CYGWIN_VERSION_DLL_MAJOR <= 21 #define LowPart u.LowPart #define HighPart u.HighPart #endif @@ -1311,7 +1290,7 @@ convert_time (FILETIME uft) return ret; } #endif -#if defined(__MINGW32__) && CYGWIN_VERSION_DLL_MAJOR <= 21 +#if defined(MINGW) && CYGWIN_VERSION_DLL_MAJOR <= 21 #undef LowPart #undef HighPart #endif @@ -1392,22 +1371,16 @@ generate_inode_val (const char * name) #endif -/* stat has been fixed since MSVC 5.0. - Oh, and do not encapsulater stat for non-MS compilers, too */ -/* #### popineau@ese-metz.fr says they still might be broken. - Oh well... Let's add that `1 ||' condition.... --kkm */ /* #### aichner@ecf.teradyne.com reported that with the library provided stat/fstat, (file-exist "d:\\tmp\\") =>> nil, (file-exist "d:\\tmp") =>> t, when d:\tmp exists. Whenever we opt to use non-encapsulated stat(), this should serve as a compatibility test. --kkm */ -#if 1 || defined(_MSC_VER) && _MSC_VER < 1100 - /* Since stat is encapsulated on Windows NT, we need to encapsulate the equally broken fstat as well. */ -int _cdecl -fstat (int handle, struct stat *buffer) +int +mswindows_fstat (int handle, struct stat *buffer) { int ret; BY_HANDLE_FILE_INFORMATION lpFileInfo; @@ -1442,7 +1415,7 @@ fstat (int handle, struct stat *buffer) 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) +mswindows_stat (const char * path, struct stat * buf) { char * name; WIN32_FIND_DATA wfd; @@ -1628,7 +1601,6 @@ stat (const char * path, struct stat * buf) return 0; } -#endif /* defined(_MSC_VER) && _MSC_VER < 1100 */ /* From callproc.c */ extern Lisp_Object Vbinary_process_input; @@ -1802,7 +1774,7 @@ unsigned signal_block_mask = 0; /* Signal pending mask: bit set to 1 means sig is pending */ unsigned signal_pending_mask = 0; -msw_sighandler msw_sigset (int nsig, msw_sighandler handler) +mswindows_sighandler mswindows_sigset (int nsig, mswindows_sighandler handler) { /* We delegate some signals to the system function */ if (nsig == SIGFPE || nsig == SIGABRT || nsig == SIGINT) @@ -1816,13 +1788,13 @@ msw_sighandler msw_sigset (int nsig, msw_sighandler handler) /* Store handler ptr */ { - msw_sighandler old_handler = signal_handlers[nsig]; + mswindows_sighandler old_handler = signal_handlers[nsig]; signal_handlers[nsig] = handler; return old_handler; } } -int msw_sighold (int nsig) +int mswindows_sighold (int nsig) { if (nsig < 0 || nsig > SIG_MAX) return errno = EINVAL; @@ -1831,7 +1803,7 @@ int msw_sighold (int nsig) return 0; } -int msw_sigrelse (int nsig) +int mswindows_sigrelse (int nsig) { if (nsig < 0 || nsig > SIG_MAX) return errno = EINVAL; @@ -1839,12 +1811,12 @@ int msw_sigrelse (int nsig) signal_block_mask &= ~sigmask(nsig); if (signal_pending_mask & sigmask(nsig)) - msw_raise (nsig); + mswindows_raise (nsig); return 0; } -int msw_sigpause (int nsig) +int mswindows_sigpause (int nsig) { /* This is currently not called, because the only call to sigpause inside XEmacs is with SIGCHLD @@ -1855,7 +1827,7 @@ int msw_sigpause (int nsig) return 0; } -int msw_raise (int nsig) +int mswindows_raise (int nsig) { /* We delegate some raises to the system routine */ if (nsig == SIGFPE || nsig == SIGABRT || nsig == SIGINT) @@ -1921,7 +1893,7 @@ static void CALLBACK timer_proc (UINT uID, UINT uMsg, DWORD dwUser, DWORD dw1, DWORD dw2) { /* Just raise a signal indicated by dwUser parameter */ - msw_raise (dwUser); + mswindows_raise (dwUser); } /* Divide time in ms specified by IT by DENOM. Return 1 ms @@ -2004,9 +1976,15 @@ int setitimer (int kind, const struct itimerval* itnew, return errno = EINVAL; } + +/*--------------------------------------------------------------------*/ +/* Memory-mapped files */ +/*--------------------------------------------------------------------*/ + int open_input_file (file_data *p_file, const char *filename) { + /* Synched with FSF 20.6. We fixed some warnings. */ HANDLE file; HANDLE file_mapping; void *file_base; @@ -2036,6 +2014,179 @@ open_input_file (file_data *p_file, const char *filename) return TRUE; } +int +open_output_file (file_data *p_file, const char *filename, unsigned long size) +{ + /* Synched with FSF 20.6. We fixed some warnings. */ + HANDLE file; + HANDLE file_mapping; + void *file_base; + + file = CreateFile (filename, GENERIC_READ | GENERIC_WRITE, 0, NULL, + CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0); + if (file == INVALID_HANDLE_VALUE) + return FALSE; + + file_mapping = CreateFileMapping (file, NULL, PAGE_READWRITE, + 0, size, NULL); + if (!file_mapping) + return FALSE; + + file_base = MapViewOfFile (file_mapping, FILE_MAP_WRITE, 0, 0, size); + if (file_base == NULL) + return FALSE; + + p_file->name = filename; + p_file->size = size; + p_file->file = file; + p_file->file_mapping = file_mapping; + p_file->file_base = (char*) file_base; + + return TRUE; +} + +#if 1 /* !defined(MINGW) */ +/* Return pointer to section header for section containing the given + relative virtual address. */ +static IMAGE_SECTION_HEADER * +rva_to_section (DWORD rva, IMAGE_NT_HEADERS * nt_header) +{ + /* Synched with FSF 20.6. We added MINGW stuff. */ + PIMAGE_SECTION_HEADER section; + int i; + + section = IMAGE_FIRST_SECTION (nt_header); + + for (i = 0; i < nt_header->FileHeader.NumberOfSections; i++) + { + /* Some linkers (eg. the NT SDK linker I believe) swapped the + meaning of these two values - or rather, they ignored + VirtualSize entirely and always set it to zero. This affects + some very old exes (eg. gzip dated Dec 1993). Since + mswindows_executable_type relies on this function to work reliably, + we need to cope with this. */ + DWORD real_size = max (section->SizeOfRawData, + section->Misc.VirtualSize); + if (rva >= section->VirtualAddress + && rva < section->VirtualAddress + real_size) + return section; + section++; + } + return NULL; +} +#endif + +void +mswindows_executable_type (const char * filename, int * is_dos_app, + int * is_cygnus_app) +{ + /* Synched with FSF 20.6. We added MINGW stuff and casts. */ + file_data executable; + char * p; + + /* Default values in case we can't tell for sure. */ + *is_dos_app = FALSE; + *is_cygnus_app = FALSE; + + if (!open_input_file (&executable, filename)) + return; + + p = strrchr (filename, '.'); + + /* We can only identify DOS .com programs from the extension. */ + if (p && stricmp (p, ".com") == 0) + *is_dos_app = TRUE; + else if (p && (stricmp (p, ".bat") == 0 || + stricmp (p, ".cmd") == 0)) + { + /* A DOS shell script - it appears that CreateProcess is happy to + accept this (somewhat surprisingly); presumably it looks at + COMSPEC to determine what executable to actually invoke. + Therefore, we have to do the same here as well. */ + /* Actually, I think it uses the program association for that + extension, which is defined in the registry. */ + p = egetenv ("COMSPEC"); + if (p) + mswindows_executable_type (p, is_dos_app, is_cygnus_app); + } + else + { + /* Look for DOS .exe signature - if found, we must also check that + it isn't really a 16- or 32-bit Windows exe, since both formats + start with a DOS program stub. Note that 16-bit Windows + executables use the OS/2 1.x format. */ + +#if 0 /* defined( MINGW ) */ + /* mingw32 doesn't have enough headers to detect cygwin + apps, just do what we can. */ + FILHDR * exe_header; + + exe_header = (FILHDR*) executable.file_base; + if (exe_header->e_magic != DOSMAGIC) + goto unwind; + + if ((char*) exe_header->e_lfanew > (char*) executable.size) + { + /* Some dos headers (pkunzip) have bogus e_lfanew fields. */ + *is_dos_app = TRUE; + } + else if (exe_header->nt_signature != NT_SIGNATURE) + { + *is_dos_app = TRUE; + } +#else + IMAGE_DOS_HEADER * dos_header; + IMAGE_NT_HEADERS * nt_header; + + dos_header = (PIMAGE_DOS_HEADER) executable.file_base; + if (dos_header->e_magic != IMAGE_DOS_SIGNATURE) + goto unwind; + + nt_header = (PIMAGE_NT_HEADERS) ((char*) dos_header + dos_header->e_lfanew); + + if ((char*) nt_header > (char*) dos_header + executable.size) + { + /* Some dos headers (pkunzip) have bogus e_lfanew fields. */ + *is_dos_app = TRUE; + } + else if (nt_header->Signature != IMAGE_NT_SIGNATURE && + LOWORD (nt_header->Signature) != IMAGE_OS2_SIGNATURE) + { + *is_dos_app = TRUE; + } + else if (nt_header->Signature == IMAGE_NT_SIGNATURE) + { + /* Look for cygwin.dll in DLL import list. */ + IMAGE_DATA_DIRECTORY import_dir = + nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT]; + IMAGE_IMPORT_DESCRIPTOR * imports; + IMAGE_SECTION_HEADER * section; + + section = rva_to_section (import_dir.VirtualAddress, nt_header); + imports = (IMAGE_IMPORT_DESCRIPTOR *) RVA_TO_PTR (import_dir.VirtualAddress, + section, executable); + + for ( ; imports->Name; imports++) + { + char *dllname = (char*) RVA_TO_PTR (imports->Name, section, executable); + + /* The exact name of the cygwin dll has changed with + various releases, but hopefully this will be reasonably + future proof. */ + if (strncmp (dllname, "cygwin", 6) == 0) + { + *is_cygnus_app = TRUE; + break; + } + } + } +#endif + } + + unwind: + close_file_data (&executable); +} + /* Close the system structures associated with the given file. */ void close_file_data (file_data *p_file)