-/* Process support for Windows NT port of GNU EMACS.
- Copyright (C) 1992, 1995 Free Software Foundation, Inc.
+/* Process support for GNU Emacs on the Microsoft W32 API.
+ Copyright (C) 1992, 1995, 1999, 2000, 2001, 2002, 2003, 2004,
+ 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of GNU Emacs.
You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA.
Drew Bliss Oct 14, 1993
Adapted from alarm.c by Tim Fleehart
#include <io.h>
#include <fcntl.h>
#include <signal.h>
+#include <sys/file.h>
/* must include CRT headers *before* config.h */
-#include "config.h"
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
#undef signal
#undef wait
#undef spawnve
#undef kill
#include <windows.h>
+#ifdef __GNUC__
+/* This definition is missing from mingw32 headers. */
+extern BOOL WINAPI IsValidLocale(LCID, DWORD);
+#endif
+
+#ifdef HAVE_LANGINFO_CODESET
+#include <nl_types.h>
+#include <langinfo.h>
+#endif
#include "lisp.h"
-#include "nt.h"
+#include "w32.h"
+#include "w32heap.h"
#include "systime.h"
#include "syswait.h"
#include "process.h"
+#include "syssignal.h"
+#include "w32term.h"
+
+#define RVA_TO_PTR(var,section,filedata) \
+ ((void *)((section)->PointerToRawData \
+ + ((DWORD)(var) - (section)->VirtualAddress) \
+ + (filedata).file_base))
/* Control whether spawnve quotes arguments as necessary to ensure
correct parsing by child process. Because not all uses of spawnve
hidden. The default is nil. */
Lisp_Object Vw32_start_process_show_window;
+/* Control whether create_child causes the process to inherit Emacs'
+ console window, or be given a new one of its own. The default is
+ nil, to allow multiple DOS programs to run on Win95. Having separate
+ consoles also allows Emacs to cleanly terminate process groups. */
+Lisp_Object Vw32_start_process_share_console;
+
+/* Control whether create_child cause the process to inherit Emacs'
+ error mode setting. The default is t, to minimize the possibility of
+ subprocesses blocking when accessing unmounted drives. */
+Lisp_Object Vw32_start_process_inherit_error_mode;
+
/* Time to sleep before reading from a subprocess output pipe - this
avoids the inefficiency of frequently reading small amounts of data.
This is primarily necessary for handling DOS processes on Windows 95,
- but is useful for W32 processes on both Win95 and NT as well. */
-Lisp_Object Vw32_pipe_read_delay;
+ but is useful for W32 processes on both Windows 95 and NT as well. */
+int w32_pipe_read_delay;
/* Control conversion of upper case file names to lower case.
nil means no, t means yes. */
Lisp_Object Vw32_downcase_file_names;
-/* Keep track of whether we have already started a DOS program. */
-BOOL dos_process_running;
+/* Control whether stat() attempts to generate fake but hopefully
+ "accurate" inode values, by hashing the absolute truenames of files.
+ This should detect aliasing between long and short names, but still
+ allows the possibility of hash collisions. */
+Lisp_Object Vw32_generate_fake_inodes;
-#ifndef SYS_SIGLIST_DECLARED
-extern char *sys_siglist[];
-#endif
+/* Control whether stat() attempts to determine file type and link count
+ exactly, at the expense of slower operation. Since true hard links
+ are supported on NTFS volumes, this is only relevant on NT. */
+Lisp_Object Vw32_get_true_file_attributes;
+
+Lisp_Object Qhigh, Qlow;
#ifdef EMACSDEBUG
void _DebPrint (const char *fmt, ...)
static signal_handler sig_handlers[NSIG];
/* Fake signal implementation to record the SIGCHLD handler. */
-signal_handler
+signal_handler
sys_signal (int sig, signal_handler handler)
{
signal_handler old;
-
+
if (sig != SIGCHLD)
{
errno = EINVAL;
{
child_process *cp;
DWORD id;
-
+
for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--)
if (!CHILD_ACTIVE (cp))
goto Initialise;
return NULL;
}
-void
+void
delete_child (child_process *cp)
{
int i;
is normally blocked until woken by select() to check for input by
reading one char. When the read completes, char_avail is signalled
to wake up the select emulator and the thread blocks itself again. */
-DWORD WINAPI
+DWORD WINAPI
reader_thread (void *arg)
{
child_process *cp;
-
+
/* Our identity */
cp = (child_process *)arg;
-
+
/* We have to wait for the go-ahead before we can start */
- if (cp == NULL ||
- WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0)
+ if (cp == NULL
+ || WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0)
return 1;
for (;;)
{
int rc;
- rc = _sys_read_ahead (cp->fd);
+ if (fd_info[cp->fd].flags & FILE_LISTEN)
+ rc = _sys_wait_accept (cp->fd);
+ else
+ rc = _sys_read_ahead (cp->fd);
/* The name char_avail is a misnomer - it really just means the
read-ahead has completed, whether successfully or not. */
if (rc == STATUS_READ_ERROR)
return 1;
-
+
/* If the read died, the child has died so let the thread die */
if (rc == STATUS_READ_FAILED)
break;
-
+
/* Wait until our input is acknowledged before reading again */
if (WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0)
{
return 0;
}
-static BOOL
-create_child (char *exe, char *cmdline, char *env,
+/* To avoid Emacs changing directory, we just record here the directory
+ the new process should start in. This is set just before calling
+ sys_spawnve, and is not generally valid at any other time. */
+static char * process_dir;
+
+static BOOL
+create_child (char *exe, char *cmdline, char *env, int is_gui_app,
int * pPid, child_process *cp)
{
STARTUPINFO start;
SECURITY_ATTRIBUTES sec_attrs;
+#if 0
SECURITY_DESCRIPTOR sec_desc;
-
+#endif
+ DWORD flags;
+ char dir[ MAXPATHLEN ];
+
if (cp == NULL) abort ();
-
+
memset (&start, 0, sizeof (start));
start.cb = sizeof (start);
-
+
#ifdef HAVE_NTGUI
- if (NILP (Vw32_start_process_show_window))
+ if (NILP (Vw32_start_process_show_window) && !is_gui_app)
start.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
else
start.dwFlags = STARTF_USESTDHANDLES;
start.hStdError = GetStdHandle (STD_ERROR_HANDLE);
#endif /* HAVE_NTGUI */
+#if 0
/* Explicitly specify no security */
if (!InitializeSecurityDescriptor (&sec_desc, SECURITY_DESCRIPTOR_REVISION))
goto EH_Fail;
if (!SetSecurityDescriptorDacl (&sec_desc, TRUE, NULL, FALSE))
goto EH_Fail;
+#endif
sec_attrs.nLength = sizeof (sec_attrs);
- sec_attrs.lpSecurityDescriptor = &sec_desc;
+ sec_attrs.lpSecurityDescriptor = NULL /* &sec_desc */;
sec_attrs.bInheritHandle = FALSE;
-
+
+ strcpy (dir, process_dir);
+ unixtodos_filename (dir);
+
+ flags = (!NILP (Vw32_start_process_share_console)
+ ? CREATE_NEW_PROCESS_GROUP
+ : CREATE_NEW_CONSOLE);
+ if (NILP (Vw32_start_process_inherit_error_mode))
+ flags |= CREATE_DEFAULT_ERROR_MODE;
if (!CreateProcess (exe, cmdline, &sec_attrs, NULL, TRUE,
- CREATE_NEW_PROCESS_GROUP,
- env, NULL,
- &start, &cp->procinfo))
+ flags, env, dir, &start, &cp->procinfo))
goto EH_Fail;
cp->pid = (int) cp->procinfo.dwProcessId;
cp->pid = -cp->pid;
/* pid must fit in a Lisp_Int */
- cp->pid = (cp->pid & VALMASK);
-
+ cp->pid = cp->pid & INTMASK;
*pPid = cp->pid;
-
+
return TRUE;
-
+
EH_Fail:
DebPrint (("create_child.CreateProcess failed: %ld\n", GetLastError()););
return FALSE;
to register the handle with the process
This way the select emulator knows how to match file handles with
entries in child_procs. */
-void
+void
register_child (int pid, int fd)
{
child_process *cp;
-
+
cp = find_child_pid (pid);
if (cp == NULL)
{
DebPrint (("register_child unable to find pid %lu\n", pid));
return;
}
-
+
#ifdef FULL_DEBUG
DebPrint (("register_child registered fd %d with pid %lu\n", fd, pid));
#endif
-
+
cp->fd = fd;
/* thread is initially blocked until select is called; set status so
signal failure to the select emulator.
The select emulator then calls this routine to clean up.
Since the thread signaled failure we can assume it is exiting. */
-static void
+static void
reap_subprocess (child_process *cp)
{
if (cp->procinfo.hProcess)
{
/* Reap the process */
- if (WaitForSingleObject (cp->procinfo.hProcess, INFINITE) != WAIT_OBJECT_0)
- DebPrint (("reap_subprocess.WaitForSingleObject (process) failed "
- "with %lu for fd %ld\n", GetLastError (), cp->fd));
+#ifdef FULL_DEBUG
+ /* Process should have already died before we are called. */
+ if (WaitForSingleObject (cp->procinfo.hProcess, 0) != WAIT_OBJECT_0)
+ DebPrint (("reap_subprocess: child fpr fd %d has not died yet!", cp->fd));
+#endif
CloseHandle (cp->procinfo.hProcess);
cp->procinfo.hProcess = NULL;
CloseHandle (cp->procinfo.hThread);
cp->procinfo.hThread = NULL;
-
- /* If this was a DOS process, indicate that it is now safe to
- start a new one. */
- if (cp->is_dos_process)
- dos_process_running = FALSE;
}
/* For asynchronous children, the child_proc resources will be freed
When it does, close its handle
Return the pid and fill in the status if non-NULL. */
-int
+int
sys_wait (int *status)
{
DWORD active, retval;
int pid;
child_process *cp, *cps[MAX_CHILDREN];
HANDLE wait_hnd[MAX_CHILDREN];
-
+
nh = 0;
if (dead_child != NULL)
{
cps[nh] = dead_child;
if (!wait_hnd[nh]) abort ();
nh++;
+ active = 0;
+ goto get_result;
}
else
{
for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--)
/* some child_procs might be sockets; ignore them */
- if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess)
+ if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess
+ && (cp->fd < 0 || (fd_info[cp->fd].flags & FILE_AT_EOF) != 0))
{
wait_hnd[nh] = cp->procinfo.hProcess;
cps[nh] = cp;
- if (!wait_hnd[nh]) abort ();
nh++;
}
}
-
+
if (nh == 0)
{
/* Nothing to wait on, so fail */
errno = ECHILD;
return -1;
}
-
- active = WaitForMultipleObjects (nh, wait_hnd, FALSE, INFINITE);
+
+ do
+ {
+ /* Check for quit about once a second. */
+ QUIT;
+ active = WaitForMultipleObjects (nh, wait_hnd, FALSE, 1000);
+ } while (active == WAIT_TIMEOUT);
+
if (active == WAIT_FAILED)
{
errno = EBADF;
return -1;
}
- else if (active == WAIT_TIMEOUT)
- {
- /* Should never happen */
- errno = EINVAL;
- return -1;
- }
- else if (active >= WAIT_OBJECT_0 &&
- active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS)
+ else if (active >= WAIT_OBJECT_0
+ && active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS)
{
active -= WAIT_OBJECT_0;
}
- else if (active >= WAIT_ABANDONED_0 &&
- active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS)
+ else if (active >= WAIT_ABANDONED_0
+ && active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS)
{
active -= WAIT_ABANDONED_0;
}
-
+ else
+ abort ();
+
+get_result:
if (!GetExitCodeProcess (wait_hnd[active], &retval))
{
DebPrint (("Wait.GetExitCodeProcess failed with %lu\n",
retval = SIGINT;
else
retval <<= 8;
-
+
cp = cps[active];
pid = cp->pid;
#ifdef FULL_DEBUG
else if (WIFSIGNALED (retval))
{
int code = WTERMSIG (retval);
- char *signame = 0;
-
- if (code < NSIG)
- {
- /* Suppress warning if the table has const char *. */
- signame = (char *) sys_siglist[code];
- }
+ char *signame;
+
+ synchronize_system_messages_locale ();
+ signame = strsignal (code);
+
if (signame == 0)
signame = "unknown";
reap_subprocess (cp);
}
-
+
+ reap_subprocess (cp);
+
return pid;
}
-int
-w32_is_dos_binary (char * filename)
+void
+w32_executable_type (char * filename, int * is_dos_app, int * is_cygnus_app, int * is_gui_app)
{
- IMAGE_DOS_HEADER dos_header;
- DWORD signature;
- int fd;
- int is_dos_binary = FALSE;
+ file_data executable;
+ char * p;
+
+ /* Default values in case we can't tell for sure. */
+ *is_dos_app = FALSE;
+ *is_cygnus_app = FALSE;
+ *is_gui_app = FALSE;
+
+ if (!open_input_file (&executable, filename))
+ return;
+
+ p = strrchr (filename, '.');
- fd = open (filename, O_RDONLY | O_BINARY, 0);
- if (fd >= 0)
+ /* 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)
+ w32_executable_type (p, is_dos_app, is_cygnus_app, is_gui_app);
+ }
+ else
{
- char * p = strrchr (filename, '.');
+ /* 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. */
- /* We can only identify DOS .com programs from the extension. */
- if (p && stricmp (p, ".com") == 0)
- is_dos_binary = TRUE;
- else if (p && stricmp (p, ".bat") == 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. */
- p = getenv ("COMSPEC");
- if (p)
- is_dos_binary = w32_is_dos_binary (p);
- }
- 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)
{
- /* 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 (read (fd, &dos_header, sizeof (dos_header)) == sizeof (dos_header)
- && dos_header.e_magic == IMAGE_DOS_SIGNATURE
- && lseek (fd, dos_header.e_lfanew, SEEK_SET) != -1)
- {
- if (read (fd, &signature, sizeof (signature)) != sizeof (signature)
- || (signature != IMAGE_NT_SIGNATURE &&
- LOWORD (signature) != IMAGE_OS2_SIGNATURE))
- is_dos_binary = TRUE;
- }
+ /* Some dos headers (pkunzip) have bogus e_lfanew fields. */
+ *is_dos_app = TRUE;
}
- close (fd);
+ 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 = RVA_TO_PTR (import_dir.VirtualAddress, section, executable);
+
+ for ( ; imports->Name; imports++)
+ {
+ char * dllname = 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;
+ }
+ }
+
+ /* Check whether app is marked as a console or windowed (aka
+ GUI) app. Accept Posix and OS2 subsytem apps as console
+ apps. */
+ *is_gui_app = (nt_header->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI);
+ }
}
- return is_dos_binary;
+unwind:
+ close_file_data (&executable);
}
-/* We pass our process ID to our children by setting up an environment
- variable in their environment. */
-char ppid_env_var_buffer[64];
+int
+compare_env (const void *strp1, const void *strp2)
+{
+ const char *str1 = *(const char **)strp1, *str2 = *(const char **)strp2;
+
+ while (*str1 && *str2 && *str1 != '=' && *str2 != '=')
+ {
+ /* Sort order in command.com/cmd.exe is based on uppercasing
+ names, so do the same here. */
+ if (toupper (*str1) > toupper (*str2))
+ return 1;
+ else if (toupper (*str1) < toupper (*str2))
+ return -1;
+ str1++, str2++;
+ }
+
+ if (*str1 == '=' && *str2 == '=')
+ return 0;
+ else if (*str1 == '=')
+ return -1;
+ else
+ return 1;
+}
+
+void
+merge_and_sort_env (char **envp1, char **envp2, char **new_envp)
+{
+ char **optr, **nptr;
+ int num;
+
+ nptr = new_envp;
+ optr = envp1;
+ while (*optr)
+ *nptr++ = *optr++;
+ num = optr - envp1;
+
+ optr = envp2;
+ while (*optr)
+ *nptr++ = *optr++;
+ num += optr - envp2;
+
+ qsort (new_envp, num, sizeof (char *), compare_env);
+
+ *nptr = NULL;
+}
/* When a new child process is created we need to register it in our list,
so intercept spawn requests. */
-int
+int
sys_spawnve (int mode, char *cmdname, char **argv, char **envp)
{
Lisp_Object program, full;
char *cmdline, *env, *parg, **targ;
- int arglen;
+ int arglen, numenv;
int pid;
child_process *cp;
- int is_dos_binary;
-
+ int is_dos_app, is_cygnus_app, is_gui_app;
+ int do_quoting = 0;
+ char escape_char;
+ /* We pass our process ID to our children by setting up an environment
+ variable in their environment. */
+ char ppid_env_var_buffer[64];
+ char *extra_env[] = {ppid_env_var_buffer, NULL};
+ char *sepchars = " \t";
+
/* We don't care about the other modes */
if (mode != _P_NOWAIT)
{
if (NILP (Ffile_executable_p (program)))
{
struct gcpro gcpro1;
-
+
full = Qnil;
GCPRO1 (program);
- openp (Vexec_path, program, EXEC_SUFFIXES, &full, 1);
+ openp (Vexec_path, program, Vexec_suffixes, &full, make_number (X_OK));
UNGCPRO;
if (NILP (full))
{
errno = EINVAL;
return -1;
}
- cmdname = XSTRING (full)->data;
- argv[0] = cmdname;
+ program = full;
}
- /* make sure cmdname is in DOS format */
- strcpy (cmdname = alloca (strlen (cmdname) + 1), argv[0]);
+ /* make sure argv[0] and cmdname are both in DOS format */
+ cmdname = SDATA (program);
unixtodos_filename (cmdname);
argv[0] = cmdname;
- /* Check if program is a DOS executable, and if so whether we are
- allowed to start it. */
- is_dos_binary = w32_is_dos_binary (cmdname);
- if (is_dos_binary && dos_process_running)
+ /* Determine whether program is a 16-bit DOS executable, or a w32
+ executable that is implicitly linked to the Cygnus dll (implying it
+ was compiled with the Cygnus GNU toolchain and hence relies on
+ cygwin.dll to parse the command line - we use this to decide how to
+ escape quote chars in command line args that must be quoted).
+
+ Also determine whether it is a GUI app, so that we don't hide its
+ initial window unless specifically requested. */
+ w32_executable_type (cmdname, &is_dos_app, &is_cygnus_app, &is_gui_app);
+
+ /* On Windows 95, if cmdname is a DOS app, we invoke a helper
+ application to start it by specifying the helper app as cmdname,
+ while leaving the real app name as argv[0]. */
+ if (is_dos_app)
{
- errno = EAGAIN;
- return -1;
+ cmdname = alloca (MAXPATHLEN);
+ if (egetenv ("CMDPROXY"))
+ strcpy (cmdname, egetenv ("CMDPROXY"));
+ else
+ {
+ strcpy (cmdname, SDATA (Vinvocation_directory));
+ strcat (cmdname, "cmdproxy.exe");
+ }
+ unixtodos_filename (cmdname);
}
-
+
/* we have to do some conjuring here to put argv and envp into the
form CreateProcess wants... argv needs to be a space separated/null
terminated list of parameters, and envp is a null
separated/double-null terminated list of parameters.
- Additionally, zero-length args and args containing whitespace need
- to be wrapped in double quotes. Args containing embedded double
- quotes (as opposed to enclosing quotes, which we leave alone) are
- usually illegal (most W32 programs do not implement escaping of
- double quotes - sad but true, at least for programs compiled with
- MSVC), but we will escape quotes anyway for those programs that can
- handle it. The W32 gcc library from Cygnus doubles quotes to
- escape them, so we will use that convention.
-
- Since I have no idea how large argv and envp are likely to be
- we figure out list lengths on the fly and allocate them. */
-
+ Additionally, zero-length args and args containing whitespace or
+ quote chars need to be wrapped in double quotes - for this to work,
+ embedded quotes need to be escaped as well. The aim is to ensure
+ the child process reconstructs the argv array we start with
+ exactly, so we treat quotes at the beginning and end of arguments
+ as embedded quotes.
+
+ The w32 GNU-based library from Cygnus doubles quotes to escape
+ them, while MSVC uses backslash for escaping. (Actually the MSVC
+ startup code does attempt to recognise doubled quotes and accept
+ them, but gets it wrong and ends up requiring three quotes to get a
+ single embedded quote!) So by default we decide whether to use
+ quote or backslash as the escape character based on whether the
+ binary is apparently a Cygnus compiled app.
+
+ Note that using backslash to escape embedded quotes requires
+ additional special handling if an embedded quote is already
+ preceeded by backslash, or if an arg requiring quoting ends with
+ backslash. In such cases, the run of escape characters needs to be
+ doubled. For consistency, we apply this special handling as long
+ as the escape character is not quote.
+
+ Since we have no idea how large argv and envp are likely to be we
+ figure out list lengths on the fly and allocate them. */
+
+ if (!NILP (Vw32_quote_process_args))
+ {
+ do_quoting = 1;
+ /* Override escape char by binding w32-quote-process-args to
+ desired character, or use t for auto-selection. */
+ if (INTEGERP (Vw32_quote_process_args))
+ escape_char = XINT (Vw32_quote_process_args);
+ else
+ escape_char = is_cygnus_app ? '"' : '\\';
+ }
+
+ /* Cygwin apps needs quoting a bit more often */
+ if (escape_char == '"')
+ sepchars = "\r\n\t\f '";
+
/* do argv... */
arglen = 0;
targ = argv;
while (*targ)
{
char * p = *targ;
- int add_quotes = 0;
+ int need_quotes = 0;
+ int escape_char_run = 0;
if (*p == 0)
- add_quotes = 1;
- while (*p)
- if (*p++ == '"')
- {
- /* allow for embedded quotes to be doubled - we won't
- actually double quotes that aren't embedded though */
+ need_quotes = 1;
+ for ( ; *p; p++)
+ {
+ if (escape_char == '"' && *p == '\\')
+ /* If it's a Cygwin app, \ needs to be escaped. */
arglen++;
- add_quotes = 1;
- }
- else if (*p == ' ' || *p == '\t')
- add_quotes = 1;
- if (add_quotes)
- arglen += 2;
+ else if (*p == '"')
+ {
+ /* allow for embedded quotes to be escaped */
+ arglen++;
+ need_quotes = 1;
+ /* handle the case where the embedded quote is already escaped */
+ if (escape_char_run > 0)
+ {
+ /* To preserve the arg exactly, we need to double the
+ preceding escape characters (plus adding one to
+ escape the quote character itself). */
+ arglen += escape_char_run;
+ }
+ }
+ else if (strchr (sepchars, *p) != NULL)
+ {
+ need_quotes = 1;
+ }
+
+ if (*p == escape_char && escape_char != '"')
+ escape_char_run++;
+ else
+ escape_char_run = 0;
+ }
+ if (need_quotes)
+ {
+ arglen += 2;
+ /* handle the case where the arg ends with an escape char - we
+ must not let the enclosing quote be escaped. */
+ if (escape_char_run > 0)
+ arglen += escape_char_run;
+ }
arglen += strlen (*targ++) + 1;
}
cmdline = alloca (arglen);
while (*targ)
{
char * p = *targ;
- int add_quotes = 0;
+ int need_quotes = 0;
if (*p == 0)
- add_quotes = 1;
+ need_quotes = 1;
- if (!NILP (Vw32_quote_process_args))
+ if (do_quoting)
{
- /* This is conditional because it sometimes causes more
- problems than it solves, since argv arrays are not always
- carefully constructed. M-x grep, for instance, passes the
- whole command line as one argument, so it becomes
- impossible to pass a regexp which contains spaces. */
for ( ; *p; p++)
- if (*p == ' ' || *p == '\t' || *p == '"')
- add_quotes = 1;
+ if ((strchr (sepchars, *p) != NULL) || *p == '"')
+ need_quotes = 1;
}
- if (add_quotes)
+ if (need_quotes)
{
+ int escape_char_run = 0;
char * first;
char * last;
first = p;
last = p + strlen (p) - 1;
*parg++ = '"';
+#if 0
+ /* This version does not escape quotes if they occur at the
+ beginning or end of the arg - this could lead to incorrect
+ behaviour when the arg itself represents a command line
+ containing quoted args. I believe this was originally done
+ as a hack to make some things work, before
+ `w32-quote-process-args' was added. */
while (*p)
{
if (*p == '"' && p > first && p < last)
- *parg++ = '"'; /* double up embedded quotes only */
+ *parg++ = escape_char; /* escape embedded quotes */
*parg++ = *p++;
}
+#else
+ for ( ; *p; p++)
+ {
+ if (*p == '"')
+ {
+ /* double preceding escape chars if any */
+ while (escape_char_run > 0)
+ {
+ *parg++ = escape_char;
+ escape_char_run--;
+ }
+ /* escape all quote chars, even at beginning or end */
+ *parg++ = escape_char;
+ }
+ else if (escape_char == '"' && *p == '\\')
+ *parg++ = '\\';
+ *parg++ = *p;
+
+ if (*p == escape_char && escape_char != '"')
+ escape_char_run++;
+ else
+ escape_char_run = 0;
+ }
+ /* double escape chars before enclosing quote */
+ while (escape_char_run > 0)
+ {
+ *parg++ = escape_char;
+ escape_char_run--;
+ }
+#endif
*parg++ = '"';
}
else
targ++;
}
*--parg = '\0';
-
+
/* and envp... */
arglen = 1;
targ = envp;
+ numenv = 1; /* for end null */
while (*targ)
{
arglen += strlen (*targ++) + 1;
+ numenv++;
}
- sprintf (ppid_env_var_buffer, "__PARENT_PROCESS_ID=%d",
+ /* extra env vars... */
+ sprintf (ppid_env_var_buffer, "EM_PARENT_PROCESS_ID=%d",
GetCurrentProcessId ());
arglen += strlen (ppid_env_var_buffer) + 1;
+ numenv++;
+
+ /* merge env passed in and extra env into one, and sort it. */
+ targ = (char **) alloca (numenv * sizeof (char *));
+ merge_and_sort_env (envp, extra_env, targ);
+ /* concatenate env entries. */
env = alloca (arglen);
- targ = envp;
parg = env;
while (*targ)
{
parg += strlen (*targ++);
*parg++ = '\0';
}
- strcpy (parg, ppid_env_var_buffer);
- parg += strlen (ppid_env_var_buffer);
*parg++ = '\0';
*parg = '\0';
errno = EAGAIN;
return -1;
}
-
+
/* Now create the process. */
- if (!create_child (cmdname, cmdline, env, &pid, cp))
+ if (!create_child (cmdname, cmdline, env, is_gui_app, &pid, cp))
{
delete_child (cp);
errno = ENOEXEC;
return -1;
}
- if (is_dos_binary)
- {
- cp->is_dos_process = TRUE;
- dos_process_running = TRUE;
- }
-
return pid;
}
/* Emulate the select call
Wait for available input on any of the given rfds, or timeout if
a timeout is given and no input is detected
- wfds and efds are not supported and must be NULL. */
+ wfds and efds are not supported and must be NULL.
+
+ For simplicity, we detect the death of child processes here and
+ synchronously call the SIGCHLD handler. Since it is possible for
+ children to be created without a corresponding pipe handle from which
+ to read output, we wait separately on the process handles as well as
+ the char_avail events for each process pipe. We only call
+ wait/reap_process when the process actually terminates.
+
+ To reduce the number of places in which Emacs can be hung such that
+ C-g is not able to interrupt it, we always wait on interrupt_handle
+ (which is signalled by the input thread when C-g is detected). If we
+ detect that we were woken up by C-g, we return -1 with errno set to
+ EINTR as on Unix. */
/* From ntterm.c */
extern HANDLE keyboard_handle;
+
+/* From w32xfns.c */
+extern HANDLE interrupt_handle;
+
/* From process.c */
extern int proc_buffered_char[];
-int
+int
sys_select (int nfds, SELECT_TYPE *rfds, SELECT_TYPE *wfds, SELECT_TYPE *efds,
EMACS_TIME *timeout)
{
SELECT_TYPE orfds;
- DWORD timeout_ms;
- int i, nh, nr;
+ DWORD timeout_ms, start_time;
+ int i, nh, nc, nr;
DWORD active;
- child_process *cp;
- HANDLE wait_hnd[MAXDESC];
+ child_process *cp, *cps[MAX_CHILDREN];
+ HANDLE wait_hnd[MAXDESC + MAX_CHILDREN];
int fdindex[MAXDESC]; /* mapping from wait handles back to descriptors */
-
+
+ timeout_ms = timeout ? (timeout->tv_sec * 1000 + timeout->tv_usec / 1000) : INFINITE;
+
/* If the descriptor sets are NULL but timeout isn't, then just Sleep. */
- if (rfds == NULL && wfds == NULL && efds == NULL && timeout != NULL)
+ if (rfds == NULL && wfds == NULL && efds == NULL && timeout != NULL)
{
- Sleep (timeout->tv_sec * 1000 + timeout->tv_usec / 1000);
+ Sleep (timeout_ms);
return 0;
}
errno = EINVAL;
return -1;
}
-
+
orfds = *rfds;
FD_ZERO (rfds);
nr = 0;
-
- /* Build a list of handles to wait on. */
- nh = 0;
+
+ /* Always wait on interrupt_handle, to detect C-g (quit). */
+ wait_hnd[0] = interrupt_handle;
+ fdindex[0] = -1;
+
+ /* Build a list of pipe handles to wait on. */
+ nh = 1;
for (i = 0; i < nfds; i++)
if (FD_ISSET (i, &orfds))
{
have changed) should indicate read has completed
but has not been acknowledged. */
current_status = cp->status;
- if (current_status != STATUS_READ_SUCCEEDED &&
- current_status != STATUS_READ_FAILED)
+ if (current_status != STATUS_READ_SUCCEEDED
+ && current_status != STATUS_READ_FAILED)
DebPrint (("char_avail set, but read not completed: status %d\n",
current_status));
}
that read has completed but event wasn't yet signalled
when we tested it (because a context switch occurred
or if running on separate CPUs). */
- if (current_status != STATUS_READ_READY &&
- current_status != STATUS_READ_IN_PROGRESS &&
- current_status != STATUS_READ_SUCCEEDED &&
- current_status != STATUS_READ_FAILED)
+ if (current_status != STATUS_READ_READY
+ && current_status != STATUS_READ_IN_PROGRESS
+ && current_status != STATUS_READ_SUCCEEDED
+ && current_status != STATUS_READ_FAILED)
DebPrint (("char_avail reset, but read status is bad: %d\n",
current_status));
}
else
{
/* Unable to find something to wait on for this fd, skip */
+
+ /* Note that this is not a fatal error, and can in fact
+ happen in unusual circumstances. Specifically, if
+ sys_spawnve fails, eg. because the program doesn't
+ exist, and debug-on-error is t so Fsignal invokes a
+ nested input loop, then the process output pipe is
+ still included in input_wait_mask with no child_proc
+ associated with it. (It is removed when the debugger
+ exits the nested input loop and the error is thrown.) */
+
DebPrint (("sys_select: fd %ld is invalid! ignoring\n", i));
- abort ();
}
}
}
-
+
+count_children:
+ /* Add handles of child processes. */
+ nc = 0;
+ for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--)
+ /* Some child_procs might be sockets; ignore them. Also some
+ children may have died already, but we haven't finished reading
+ the process output; ignore them too. */
+ if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess
+ && (cp->fd < 0
+ || (fd_info[cp->fd].flags & FILE_SEND_SIGCHLD) == 0
+ || (fd_info[cp->fd].flags & FILE_AT_EOF) != 0)
+ )
+ {
+ wait_hnd[nh + nc] = cp->procinfo.hProcess;
+ cps[nc] = cp;
+ nc++;
+ }
+
/* Nothing to look for, so we didn't find anything */
- if (nh == 0)
+ if (nh + nc == 0)
{
if (timeout)
- Sleep (timeout->tv_sec * 1000 + timeout->tv_usec / 1000);
+ Sleep (timeout_ms);
return 0;
}
-
- /*
- Wait for input
- If a child process dies while this is waiting, its pipe will break
- so the reader thread will signal an error condition, thus, the wait
- will wake up
- */
- timeout_ms = timeout ? (timeout->tv_sec * 1000 + timeout->tv_usec / 1000) : INFINITE;
- active = WaitForMultipleObjects (nh, wait_hnd, FALSE, timeout_ms);
+ start_time = GetTickCount ();
+
+ /* Wait for input or child death to be signalled. If user input is
+ allowed, then also accept window messages. */
+ if (FD_ISSET (0, &orfds))
+ active = MsgWaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms,
+ QS_ALLINPUT);
+ else
+ active = WaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms);
if (active == WAIT_FAILED)
{
DebPrint (("select.WaitForMultipleObjects (%d, %lu) failed with %lu\n",
- nh, timeout_ms, GetLastError ()));
- /* don't return EBADF - this causes wait_reading_process_input to
+ nh + nc, timeout_ms, GetLastError ()));
+ /* don't return EBADF - this causes wait_reading_process_output to
abort; WAIT_FAILED is returned when single-stepping under
Windows 95 after switching thread focus in debugger, and
possibly at other times. */
{
return 0;
}
- else if (active >= WAIT_OBJECT_0 &&
- active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS)
+ else if (active >= WAIT_OBJECT_0
+ && active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS)
{
active -= WAIT_OBJECT_0;
}
- else if (active >= WAIT_ABANDONED_0 &&
- active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS)
+ else if (active >= WAIT_ABANDONED_0
+ && active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS)
{
active -= WAIT_ABANDONED_0;
}
+ else
+ abort ();
/* Loop over all handles after active (now officially documented as
being the first signalled handle in the array). We do this to
processed - otherwise higher numbered channels could be starved. */
do
{
- if (fdindex[active] == 0)
+ if (active == nh + nc)
{
- /* Keyboard input available */
- FD_SET (0, rfds);
- nr++;
+ /* There are messages in the lisp thread's queue; we must
+ drain the queue now to ensure they are processed promptly,
+ because if we don't do so, we will not be woken again until
+ further messages arrive.
+
+ NB. If ever we allow window message procedures to callback
+ into lisp, we will need to ensure messages are dispatched
+ at a safe time for lisp code to be run (*), and we may also
+ want to provide some hooks in the dispatch loop to cater
+ for modeless dialogs created by lisp (ie. to register
+ window handles to pass to IsDialogMessage).
+
+ (*) Note that MsgWaitForMultipleObjects above is an
+ internal dispatch point for messages that are sent to
+ windows created by this thread. */
+ drain_message_queue ();
}
- else
+ else if (active >= nh)
{
- /* must be a socket or pipe */
- int current_status;
+ cp = cps[active - nh];
- cp = fd_info[ fdindex[active] ].cp;
+ /* We cannot always signal SIGCHLD immediately; if we have not
+ finished reading the process output, we must delay sending
+ SIGCHLD until we do. */
- /* Read ahead should have completed, either succeeding or failing. */
- FD_SET (fdindex[active], rfds);
- nr++;
- current_status = cp->status;
- if (current_status != STATUS_READ_SUCCEEDED)
+ if (cp->fd >= 0 && (fd_info[cp->fd].flags & FILE_AT_EOF) == 0)
+ fd_info[cp->fd].flags |= FILE_SEND_SIGCHLD;
+ /* SIG_DFL for SIGCHLD is ignore */
+ else if (sig_handlers[SIGCHLD] != SIG_DFL &&
+ sig_handlers[SIGCHLD] != SIG_IGN)
{
- if (current_status != STATUS_READ_FAILED)
- DebPrint (("internal error: subprocess pipe signalled "
- "at the wrong time (status %d)\n!", current_status));
-
- /* The child_process entry for a socket or pipe will be
- freed when the last descriptor using it is closed; for
- pipes, we call the SIGCHLD handler. */
- if (fd_info[ fdindex[active] ].flags & FILE_PIPE)
- {
- /* The SIGCHLD handler will do a Wait so we know it won't
- return until the process is dead
- We force Wait to only wait for this process to avoid it
- picking up other children that happen to be dead but that
- we haven't noticed yet
- SIG_DFL for SIGCHLD is ignore? */
- if (sig_handlers[SIGCHLD] != SIG_DFL &&
- sig_handlers[SIGCHLD] != SIG_IGN)
- {
#ifdef FULL_DEBUG
- DebPrint (("select calling SIGCHLD handler for pid %d\n",
- cp->pid));
+ DebPrint (("select calling SIGCHLD handler for pid %d\n",
+ cp->pid));
#endif
- dead_child = cp;
- sig_handlers[SIGCHLD] (SIGCHLD);
- dead_child = NULL;
- }
-
- /* Clean up the child process entry in the table */
- reap_subprocess (cp);
- }
+ dead_child = cp;
+ sig_handlers[SIGCHLD] (SIGCHLD);
+ dead_child = NULL;
}
}
+ else if (fdindex[active] == -1)
+ {
+ /* Quit (C-g) was detected. */
+ errno = EINTR;
+ return -1;
+ }
+ else if (fdindex[active] == 0)
+ {
+ /* Keyboard input available */
+ FD_SET (0, rfds);
+ nr++;
+ }
+ else
+ {
+ /* must be a socket or pipe - read ahead should have
+ completed, either succeeding or failing. */
+ FD_SET (fdindex[active], rfds);
+ nr++;
+ }
- /* Test for input on remaining channels. */
- while (++active < nh)
+ /* Even though wait_reading_process_output only reads from at most
+ one channel, we must process all channels here so that we reap
+ all children that have died. */
+ while (++active < nh + nc)
if (WaitForSingleObject (wait_hnd[active], 0) == WAIT_OBJECT_0)
break;
- } while (active < nh);
+ } while (active < nh + nc);
+
+ /* If no input has arrived and timeout hasn't expired, wait again. */
+ if (nr == 0)
+ {
+ DWORD elapsed = GetTickCount () - start_time;
+
+ if (timeout_ms > elapsed) /* INFINITE is MAX_UINT */
+ {
+ if (timeout_ms != INFINITE)
+ timeout_ms -= elapsed;
+ goto count_children;
+ }
+ }
return nr;
}
/* Substitute for certain kill () operations */
-int
+
+static BOOL CALLBACK
+find_child_console (HWND hwnd, LPARAM arg)
+{
+ child_process * cp = (child_process *) arg;
+ DWORD thread_id;
+ DWORD process_id;
+
+ thread_id = GetWindowThreadProcessId (hwnd, &process_id);
+ if (process_id == cp->procinfo.dwProcessId)
+ {
+ char window_class[32];
+
+ GetClassName (hwnd, window_class, sizeof (window_class));
+ if (strcmp (window_class,
+ (os_subtype == OS_WIN95)
+ ? "tty"
+ : "ConsoleWindowClass") == 0)
+ {
+ cp->hwnd = hwnd;
+ return FALSE;
+ }
+ }
+ /* keep looking */
+ return TRUE;
+}
+
+int
sys_kill (int pid, int sig)
{
child_process *cp;
HANDLE proc_hand;
int need_to_free = 0;
int rc = 0;
-
+
/* Only handle signals that will result in the process dying */
if (sig != SIGINT && sig != SIGKILL && sig != SIGQUIT && sig != SIGHUP)
{
{
proc_hand = cp->procinfo.hProcess;
pid = cp->procinfo.dwProcessId;
+
+ /* Try to locate console window for process. */
+ EnumWindows (find_child_console, (LPARAM) cp);
}
-
- if (sig == SIGINT)
+
+ if (sig == SIGINT || sig == SIGQUIT)
{
+ if (NILP (Vw32_start_process_share_console) && cp && cp->hwnd)
+ {
+ BYTE control_scan_code = (BYTE) MapVirtualKey (VK_CONTROL, 0);
+ /* Fake Ctrl-C for SIGINT, and Ctrl-Break for SIGQUIT. */
+ BYTE vk_break_code = (sig == SIGINT) ? 'C' : VK_CANCEL;
+ BYTE break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0);
+ HWND foreground_window;
+
+ if (break_scan_code == 0)
+ {
+ /* Fake Ctrl-C for SIGQUIT if we can't manage Ctrl-Break. */
+ vk_break_code = 'C';
+ break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0);
+ }
+
+ foreground_window = GetForegroundWindow ();
+ if (foreground_window)
+ {
+ /* NT 5.0, and apparently also Windows 98, will not allow
+ a Window to be set to foreground directly without the
+ user's involvement. The workaround is to attach
+ ourselves to the thread that owns the foreground
+ window, since that is the only thread that can set the
+ foreground window. */
+ DWORD foreground_thread, child_thread;
+ foreground_thread =
+ GetWindowThreadProcessId (foreground_window, NULL);
+ if (foreground_thread == GetCurrentThreadId ()
+ || !AttachThreadInput (GetCurrentThreadId (),
+ foreground_thread, TRUE))
+ foreground_thread = 0;
+
+ child_thread = GetWindowThreadProcessId (cp->hwnd, NULL);
+ if (child_thread == GetCurrentThreadId ()
+ || !AttachThreadInput (GetCurrentThreadId (),
+ child_thread, TRUE))
+ child_thread = 0;
+
+ /* Set the foreground window to the child. */
+ if (SetForegroundWindow (cp->hwnd))
+ {
+ /* Generate keystrokes as if user had typed Ctrl-Break or
+ Ctrl-C. */
+ keybd_event (VK_CONTROL, control_scan_code, 0, 0);
+ keybd_event (vk_break_code, break_scan_code,
+ (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY), 0);
+ keybd_event (vk_break_code, break_scan_code,
+ (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY)
+ | KEYEVENTF_KEYUP, 0);
+ keybd_event (VK_CONTROL, control_scan_code,
+ KEYEVENTF_KEYUP, 0);
+
+ /* Sleep for a bit to give time for Emacs frame to respond
+ to focus change events (if Emacs was active app). */
+ Sleep (100);
+
+ SetForegroundWindow (foreground_window);
+ }
+ /* Detach from the foreground and child threads now that
+ the foreground switching is over. */
+ if (foreground_thread)
+ AttachThreadInput (GetCurrentThreadId (),
+ foreground_thread, FALSE);
+ if (child_thread)
+ AttachThreadInput (GetCurrentThreadId (),
+ child_thread, FALSE);
+ }
+ }
/* Ctrl-Break is NT equivalent of SIGINT. */
- if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid))
+ else if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid))
{
DebPrint (("sys_kill.GenerateConsoleCtrlEvent return %d "
"for pid %lu\n", GetLastError (), pid));
errno = EINVAL;
rc = -1;
- }
+ }
}
else
{
+ if (NILP (Vw32_start_process_share_console) && cp && cp->hwnd)
+ {
+#if 1
+ if (os_subtype == OS_WIN95)
+ {
+/*
+ Another possibility is to try terminating the VDM out-right by
+ calling the Shell VxD (id 0x17) V86 interface, function #4
+ "SHELL_Destroy_VM", ie.
+
+ mov edx,4
+ mov ebx,vm_handle
+ call shellapi
+
+ First need to determine the current VM handle, and then arrange for
+ the shellapi call to be made from the system vm (by using
+ Switch_VM_and_callback).
+
+ Could try to invoke DestroyVM through CallVxD.
+
+*/
+#if 0
+ /* On Win95, posting WM_QUIT causes the 16-bit subsystem
+ to hang when cmdproxy is used in conjunction with
+ command.com for an interactive shell. Posting
+ WM_CLOSE pops up a dialog that, when Yes is selected,
+ does the same thing. TerminateProcess is also less
+ than ideal in that subprocesses tend to stick around
+ until the machine is shutdown, but at least it
+ doesn't freeze the 16-bit subsystem. */
+ PostMessage (cp->hwnd, WM_QUIT, 0xff, 0);
+#endif
+ if (!TerminateProcess (proc_hand, 0xff))
+ {
+ DebPrint (("sys_kill.TerminateProcess returned %d "
+ "for pid %lu\n", GetLastError (), pid));
+ errno = EINVAL;
+ rc = -1;
+ }
+ }
+ else
+#endif
+ PostMessage (cp->hwnd, WM_CLOSE, 0, 0);
+ }
/* Kill the process. On W32 this doesn't kill child processes
so it doesn't work very well for shells which is why it's not
- used in every case. Also, don't try to terminate DOS processes
- (on Win95), because this will hang Emacs. */
- if (!(cp && cp->is_dos_process)
- && !TerminateProcess (proc_hand, 0xff))
+ used in every case. */
+ else if (!TerminateProcess (proc_hand, 0xff))
{
DebPrint (("sys_kill.TerminateProcess returned %d "
"for pid %lu\n", GetLastError (), pid));
return rc;
}
-extern int report_file_error (char *, Lisp_Object);
+/* extern int report_file_error (char *, Lisp_Object); */
/* The following two routines are used to manipulate stdin, stdout, and
stderr of our child processes.
handles[2] = GetStdHandle (STD_ERROR_HANDLE);
/* make inheritable copies of the new handles */
- if (!DuplicateHandle (parent,
+ if (!DuplicateHandle (parent,
(HANDLE) _get_osfhandle (in),
parent,
- &newstdin,
- 0,
- TRUE,
+ &newstdin,
+ 0,
+ TRUE,
DUPLICATE_SAME_ACCESS))
report_file_error ("Duplicating input handle for child", Qnil);
-
+
if (!DuplicateHandle (parent,
(HANDLE) _get_osfhandle (out),
parent,
TRUE,
DUPLICATE_SAME_ACCESS))
report_file_error ("Duplicating output handle for child", Qnil);
-
+
if (!DuplicateHandle (parent,
(HANDLE) _get_osfhandle (err),
parent,
/* and store them as our std handles */
if (!SetStdHandle (STD_INPUT_HANDLE, newstdin))
report_file_error ("Changing stdin handle", Qnil);
-
+
if (!SetStdHandle (STD_OUTPUT_HANDLE, newstdout))
report_file_error ("Changing stdout handle", Qnil);
SetStdHandle (STD_ERROR_HANDLE, handles[2]);
}
+void
+set_process_dir (char * dir)
+{
+ process_dir = dir;
+}
+
#ifdef HAVE_SOCKETS
/* To avoid problems with winsock implementations that work over dial-up
extern Lisp_Object Vsystem_name;
DEFUN ("w32-has-winsock", Fw32_has_winsock, Sw32_has_winsock, 0, 1, 0,
- "Test for presence of the Windows socket library `winsock'.\n\
-Returns non-nil if winsock support is present, nil otherwise.\n\
-\n\
-If the optional argument LOAD-NOW is non-nil, the winsock library is\n\
-also loaded immediately if not already loaded. If winsock is loaded,\n\
-the winsock local hostname is returned (since this may be different from\n\
-the value of `system-name' and should supplant it), otherwise t is\n\
-returned to indicate winsock support is present.")
+ doc: /* Test for presence of the Windows socket library `winsock'.
+Returns non-nil if winsock support is present, nil otherwise.
+
+If the optional argument LOAD-NOW is non-nil, the winsock library is
+also loaded immediately if not already loaded. If winsock is loaded,
+the winsock local hostname is returned (since this may be different from
+the value of `system-name' and should supplant it), otherwise t is
+returned to indicate winsock support is present. */)
(load_now)
Lisp_Object load_now;
{
DEFUN ("w32-unload-winsock", Fw32_unload_winsock, Sw32_unload_winsock,
0, 0, 0,
- "Unload the Windows socket library `winsock' if loaded.\n\
-This is provided to allow dial-up socket connections to be disconnected\n\
-when no longer needed. Returns nil without unloading winsock if any\n\
-socket connections still exist.")
+ doc: /* Unload the Windows socket library `winsock' if loaded.
+This is provided to allow dial-up socket connections to be disconnected
+when no longer needed. Returns nil without unloading winsock if any
+socket connections still exist. */)
()
{
return term_winsock () ? Qt : Qnil;
#endif /* HAVE_SOCKETS */
+\f
+/* Some miscellaneous functions that are Windows specific, but not GUI
+ specific (ie. are applicable in terminal or batch mode as well). */
+
+/* lifted from fileio.c */
+#define CORRECT_DIR_SEPS(s) \
+ do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \
+ else unixtodos_filename (s); \
+ } while (0)
+
+DEFUN ("w32-short-file-name", Fw32_short_file_name, Sw32_short_file_name, 1, 1, 0,
+ doc: /* Return the short file name version (8.3) of the full path of FILENAME.
+If FILENAME does not exist, return nil.
+All path elements in FILENAME are converted to their short names. */)
+ (filename)
+ Lisp_Object filename;
+{
+ char shortname[MAX_PATH];
+
+ CHECK_STRING (filename);
+
+ /* first expand it. */
+ filename = Fexpand_file_name (filename, Qnil);
+
+ /* luckily, this returns the short version of each element in the path. */
+ if (GetShortPathName (SDATA (filename), shortname, MAX_PATH) == 0)
+ return Qnil;
+
+ CORRECT_DIR_SEPS (shortname);
+
+ return build_string (shortname);
+}
+
+
+DEFUN ("w32-long-file-name", Fw32_long_file_name, Sw32_long_file_name,
+ 1, 1, 0,
+ doc: /* Return the long file name version of the full path of FILENAME.
+If FILENAME does not exist, return nil.
+All path elements in FILENAME are converted to their long names. */)
+ (filename)
+ Lisp_Object filename;
+{
+ char longname[ MAX_PATH ];
+
+ CHECK_STRING (filename);
+
+ /* first expand it. */
+ filename = Fexpand_file_name (filename, Qnil);
+
+ if (!w32_get_long_filename (SDATA (filename), longname, MAX_PATH))
+ return Qnil;
+
+ CORRECT_DIR_SEPS (longname);
+
+ return build_string (longname);
+}
+
+DEFUN ("w32-set-process-priority", Fw32_set_process_priority,
+ Sw32_set_process_priority, 2, 2, 0,
+ doc: /* Set the priority of PROCESS to PRIORITY.
+If PROCESS is nil, the priority of Emacs is changed, otherwise the
+priority of the process whose pid is PROCESS is changed.
+PRIORITY should be one of the symbols high, normal, or low;
+any other symbol will be interpreted as normal.
+
+If successful, the return value is t, otherwise nil. */)
+ (process, priority)
+ Lisp_Object process, priority;
+{
+ HANDLE proc_handle = GetCurrentProcess ();
+ DWORD priority_class = NORMAL_PRIORITY_CLASS;
+ Lisp_Object result = Qnil;
+
+ CHECK_SYMBOL (priority);
+
+ if (!NILP (process))
+ {
+ DWORD pid;
+ child_process *cp;
+
+ CHECK_NUMBER (process);
+
+ /* Allow pid to be an internally generated one, or one obtained
+ externally. This is necessary because real pids on Win95 are
+ negative. */
+
+ pid = XINT (process);
+ cp = find_child_pid (pid);
+ if (cp != NULL)
+ pid = cp->procinfo.dwProcessId;
+
+ proc_handle = OpenProcess (PROCESS_SET_INFORMATION, FALSE, pid);
+ }
+
+ if (EQ (priority, Qhigh))
+ priority_class = HIGH_PRIORITY_CLASS;
+ else if (EQ (priority, Qlow))
+ priority_class = IDLE_PRIORITY_CLASS;
+
+ if (proc_handle != NULL)
+ {
+ if (SetPriorityClass (proc_handle, priority_class))
+ result = Qt;
+ if (!NILP (process))
+ CloseHandle (proc_handle);
+ }
+
+ return result;
+}
+
+#ifdef HAVE_LANGINFO_CODESET
+/* Emulation of nl_langinfo. Used in fns.c:Flocale_info. */
+char *nl_langinfo (nl_item item)
+{
+ /* Conversion of Posix item numbers to their Windows equivalents. */
+ static const LCTYPE w32item[] = {
+ LOCALE_IDEFAULTANSICODEPAGE,
+ LOCALE_SDAYNAME1, LOCALE_SDAYNAME2, LOCALE_SDAYNAME3,
+ LOCALE_SDAYNAME4, LOCALE_SDAYNAME5, LOCALE_SDAYNAME6, LOCALE_SDAYNAME7,
+ LOCALE_SMONTHNAME1, LOCALE_SMONTHNAME2, LOCALE_SMONTHNAME3,
+ LOCALE_SMONTHNAME4, LOCALE_SMONTHNAME5, LOCALE_SMONTHNAME6,
+ LOCALE_SMONTHNAME7, LOCALE_SMONTHNAME8, LOCALE_SMONTHNAME9,
+ LOCALE_SMONTHNAME10, LOCALE_SMONTHNAME11, LOCALE_SMONTHNAME12
+ };
+
+ static char *nl_langinfo_buf = NULL;
+ static int nl_langinfo_len = 0;
+
+ if (nl_langinfo_len <= 0)
+ nl_langinfo_buf = xmalloc (nl_langinfo_len = 1);
+
+ if (item < 0 || item >= _NL_NUM)
+ nl_langinfo_buf[0] = 0;
+ else
+ {
+ LCID cloc = GetThreadLocale ();
+ int need_len = GetLocaleInfo (cloc, w32item[item] | LOCALE_USE_CP_ACP,
+ NULL, 0);
+
+ if (need_len <= 0)
+ nl_langinfo_buf[0] = 0;
+ else
+ {
+ if (item == CODESET)
+ {
+ need_len += 2; /* for the "cp" prefix */
+ if (need_len < 8) /* for the case we call GetACP */
+ need_len = 8;
+ }
+ if (nl_langinfo_len <= need_len)
+ nl_langinfo_buf = xrealloc (nl_langinfo_buf,
+ nl_langinfo_len = need_len);
+ if (!GetLocaleInfo (cloc, w32item[item] | LOCALE_USE_CP_ACP,
+ nl_langinfo_buf, nl_langinfo_len))
+ nl_langinfo_buf[0] = 0;
+ else if (item == CODESET)
+ {
+ if (strcmp (nl_langinfo_buf, "0") == 0 /* CP_ACP */
+ || strcmp (nl_langinfo_buf, "1") == 0) /* CP_OEMCP */
+ sprintf (nl_langinfo_buf, "cp%u", GetACP ());
+ else
+ {
+ memmove (nl_langinfo_buf + 2, nl_langinfo_buf,
+ strlen (nl_langinfo_buf) + 1);
+ nl_langinfo_buf[0] = 'c';
+ nl_langinfo_buf[1] = 'p';
+ }
+ }
+ }
+ }
+ return nl_langinfo_buf;
+}
+#endif /* HAVE_LANGINFO_CODESET */
+
+DEFUN ("w32-get-locale-info", Fw32_get_locale_info,
+ Sw32_get_locale_info, 1, 2, 0,
+ doc: /* Return information about the Windows locale LCID.
+By default, return a three letter locale code which encodes the default
+language as the first two characters, and the country or regionial variant
+as the third letter. For example, ENU refers to `English (United States)',
+while ENC means `English (Canadian)'.
+
+If the optional argument LONGFORM is t, the long form of the locale
+name is returned, e.g. `English (United States)' instead; if LONGFORM
+is a number, it is interpreted as an LCTYPE constant and the corresponding
+locale information is returned.
+
+If LCID (a 16-bit number) is not a valid locale, the result is nil. */)
+ (lcid, longform)
+ Lisp_Object lcid, longform;
+{
+ int got_abbrev;
+ int got_full;
+ char abbrev_name[32] = { 0 };
+ char full_name[256] = { 0 };
+
+ CHECK_NUMBER (lcid);
+
+ if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED))
+ return Qnil;
+
+ if (NILP (longform))
+ {
+ got_abbrev = GetLocaleInfo (XINT (lcid),
+ LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP,
+ abbrev_name, sizeof (abbrev_name));
+ if (got_abbrev)
+ return build_string (abbrev_name);
+ }
+ else if (EQ (longform, Qt))
+ {
+ got_full = GetLocaleInfo (XINT (lcid),
+ LOCALE_SLANGUAGE | LOCALE_USE_CP_ACP,
+ full_name, sizeof (full_name));
+ if (got_full)
+ return build_string (full_name);
+ }
+ else if (NUMBERP (longform))
+ {
+ got_full = GetLocaleInfo (XINT (lcid),
+ XINT (longform),
+ full_name, sizeof (full_name));
+ if (got_full)
+ return make_unibyte_string (full_name, got_full);
+ }
+
+ return Qnil;
+}
+
+
+DEFUN ("w32-get-current-locale-id", Fw32_get_current_locale_id,
+ Sw32_get_current_locale_id, 0, 0, 0,
+ doc: /* Return Windows locale id for current locale setting.
+This is a numerical value; use `w32-get-locale-info' to convert to a
+human-readable form. */)
+ ()
+{
+ return make_number (GetThreadLocale ());
+}
+
+DWORD int_from_hex (char * s)
+{
+ DWORD val = 0;
+ static char hex[] = "0123456789abcdefABCDEF";
+ char * p;
+
+ while (*s && (p = strchr(hex, *s)) != NULL)
+ {
+ unsigned digit = p - hex;
+ if (digit > 15)
+ digit -= 6;
+ val = val * 16 + digit;
+ s++;
+ }
+ return val;
+}
+
+/* We need to build a global list, since the EnumSystemLocale callback
+ function isn't given a context pointer. */
+Lisp_Object Vw32_valid_locale_ids;
+
+BOOL CALLBACK enum_locale_fn (LPTSTR localeNum)
+{
+ DWORD id = int_from_hex (localeNum);
+ Vw32_valid_locale_ids = Fcons (make_number (id), Vw32_valid_locale_ids);
+ return TRUE;
+}
+
+DEFUN ("w32-get-valid-locale-ids", Fw32_get_valid_locale_ids,
+ Sw32_get_valid_locale_ids, 0, 0, 0,
+ doc: /* Return list of all valid Windows locale ids.
+Each id is a numerical value; use `w32-get-locale-info' to convert to a
+human-readable form. */)
+ ()
+{
+ Vw32_valid_locale_ids = Qnil;
+
+ EnumSystemLocales (enum_locale_fn, LCID_SUPPORTED);
+
+ Vw32_valid_locale_ids = Fnreverse (Vw32_valid_locale_ids);
+ return Vw32_valid_locale_ids;
+}
+
+
+DEFUN ("w32-get-default-locale-id", Fw32_get_default_locale_id, Sw32_get_default_locale_id, 0, 1, 0,
+ doc: /* Return Windows locale id for default locale setting.
+By default, the system default locale setting is returned; if the optional
+parameter USERP is non-nil, the user default locale setting is returned.
+This is a numerical value; use `w32-get-locale-info' to convert to a
+human-readable form. */)
+ (userp)
+ Lisp_Object userp;
+{
+ if (NILP (userp))
+ return make_number (GetSystemDefaultLCID ());
+ return make_number (GetUserDefaultLCID ());
+}
+
+
+DEFUN ("w32-set-current-locale", Fw32_set_current_locale, Sw32_set_current_locale, 1, 1, 0,
+ doc: /* Make Windows locale LCID be the current locale setting for Emacs.
+If successful, the new locale id is returned, otherwise nil. */)
+ (lcid)
+ Lisp_Object lcid;
+{
+ CHECK_NUMBER (lcid);
+
+ if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED))
+ return Qnil;
+
+ if (!SetThreadLocale (XINT (lcid)))
+ return Qnil;
+
+ /* Need to set input thread locale if present. */
+ if (dwWindowsThreadId)
+ /* Reply is not needed. */
+ PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETLOCALE, XINT (lcid), 0);
+
+ return make_number (GetThreadLocale ());
+}
+
+
+/* We need to build a global list, since the EnumCodePages callback
+ function isn't given a context pointer. */
+Lisp_Object Vw32_valid_codepages;
+
+BOOL CALLBACK enum_codepage_fn (LPTSTR codepageNum)
+{
+ DWORD id = atoi (codepageNum);
+ Vw32_valid_codepages = Fcons (make_number (id), Vw32_valid_codepages);
+ return TRUE;
+}
+
+DEFUN ("w32-get-valid-codepages", Fw32_get_valid_codepages,
+ Sw32_get_valid_codepages, 0, 0, 0,
+ doc: /* Return list of all valid Windows codepages. */)
+ ()
+{
+ Vw32_valid_codepages = Qnil;
+
+ EnumSystemCodePages (enum_codepage_fn, CP_SUPPORTED);
+
+ Vw32_valid_codepages = Fnreverse (Vw32_valid_codepages);
+ return Vw32_valid_codepages;
+}
+
+
+DEFUN ("w32-get-console-codepage", Fw32_get_console_codepage,
+ Sw32_get_console_codepage, 0, 0, 0,
+ doc: /* Return current Windows codepage for console input. */)
+ ()
+{
+ return make_number (GetConsoleCP ());
+}
+
+
+DEFUN ("w32-set-console-codepage", Fw32_set_console_codepage,
+ Sw32_set_console_codepage, 1, 1, 0,
+ doc: /* Make Windows codepage CP be the current codepage setting for Emacs.
+The codepage setting affects keyboard input and display in tty mode.
+If successful, the new CP is returned, otherwise nil. */)
+ (cp)
+ Lisp_Object cp;
+{
+ CHECK_NUMBER (cp);
+
+ if (!IsValidCodePage (XINT (cp)))
+ return Qnil;
+
+ if (!SetConsoleCP (XINT (cp)))
+ return Qnil;
+
+ return make_number (GetConsoleCP ());
+}
+
+
+DEFUN ("w32-get-console-output-codepage", Fw32_get_console_output_codepage,
+ Sw32_get_console_output_codepage, 0, 0, 0,
+ doc: /* Return current Windows codepage for console output. */)
+ ()
+{
+ return make_number (GetConsoleOutputCP ());
+}
+
+
+DEFUN ("w32-set-console-output-codepage", Fw32_set_console_output_codepage,
+ Sw32_set_console_output_codepage, 1, 1, 0,
+ doc: /* Make Windows codepage CP be the current codepage setting for Emacs.
+The codepage setting affects keyboard input and display in tty mode.
+If successful, the new CP is returned, otherwise nil. */)
+ (cp)
+ Lisp_Object cp;
+{
+ CHECK_NUMBER (cp);
+
+ if (!IsValidCodePage (XINT (cp)))
+ return Qnil;
+
+ if (!SetConsoleOutputCP (XINT (cp)))
+ return Qnil;
+
+ return make_number (GetConsoleOutputCP ());
+}
+
+
+DEFUN ("w32-get-codepage-charset", Fw32_get_codepage_charset,
+ Sw32_get_codepage_charset, 1, 1, 0,
+ doc: /* Return charset of codepage CP.
+Returns nil if the codepage is not valid. */)
+ (cp)
+ Lisp_Object cp;
+{
+ CHARSETINFO info;
+
+ CHECK_NUMBER (cp);
+
+ if (!IsValidCodePage (XINT (cp)))
+ return Qnil;
+
+ if (TranslateCharsetInfo ((DWORD *) XINT (cp), &info, TCI_SRCCODEPAGE))
+ return make_number (info.ciCharset);
+
+ return Qnil;
+}
+
+
+DEFUN ("w32-get-valid-keyboard-layouts", Fw32_get_valid_keyboard_layouts,
+ Sw32_get_valid_keyboard_layouts, 0, 0, 0,
+ doc: /* Return list of Windows keyboard languages and layouts.
+The return value is a list of pairs of language id and layout id. */)
+ ()
+{
+ int num_layouts = GetKeyboardLayoutList (0, NULL);
+ HKL * layouts = (HKL *) alloca (num_layouts * sizeof (HKL));
+ Lisp_Object obj = Qnil;
+
+ if (GetKeyboardLayoutList (num_layouts, layouts) == num_layouts)
+ {
+ while (--num_layouts >= 0)
+ {
+ DWORD kl = (DWORD) layouts[num_layouts];
+
+ obj = Fcons (Fcons (make_number (kl & 0xffff),
+ make_number ((kl >> 16) & 0xffff)),
+ obj);
+ }
+ }
+
+ return obj;
+}
+
+
+DEFUN ("w32-get-keyboard-layout", Fw32_get_keyboard_layout,
+ Sw32_get_keyboard_layout, 0, 0, 0,
+ doc: /* Return current Windows keyboard language and layout.
+The return value is the cons of the language id and the layout id. */)
+ ()
+{
+ DWORD kl = (DWORD) GetKeyboardLayout (dwWindowsThreadId);
+
+ return Fcons (make_number (kl & 0xffff),
+ make_number ((kl >> 16) & 0xffff));
+}
+
+
+DEFUN ("w32-set-keyboard-layout", Fw32_set_keyboard_layout,
+ Sw32_set_keyboard_layout, 1, 1, 0,
+ doc: /* Make LAYOUT be the current keyboard layout for Emacs.
+The keyboard layout setting affects interpretation of keyboard input.
+If successful, the new layout id is returned, otherwise nil. */)
+ (layout)
+ Lisp_Object layout;
+{
+ DWORD kl;
+
+ CHECK_CONS (layout);
+ CHECK_NUMBER_CAR (layout);
+ CHECK_NUMBER_CDR (layout);
+
+ kl = (XINT (XCAR (layout)) & 0xffff)
+ | (XINT (XCDR (layout)) << 16);
+
+ /* Synchronize layout with input thread. */
+ if (dwWindowsThreadId)
+ {
+ if (PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETKEYBOARDLAYOUT,
+ (WPARAM) kl, 0))
+ {
+ MSG msg;
+ GetMessage (&msg, NULL, WM_EMACS_DONE, WM_EMACS_DONE);
+
+ if (msg.wParam == 0)
+ return Qnil;
+ }
+ }
+ else if (!ActivateKeyboardLayout ((HKL) kl, 0))
+ return Qnil;
+
+ return Fw32_get_keyboard_layout ();
+}
+
\f
syms_of_ntproc ()
{
+ Qhigh = intern ("high");
+ Qlow = intern ("low");
+ staticpro (&Qhigh);
+ staticpro (&Qlow);
+
#ifdef HAVE_SOCKETS
defsubr (&Sw32_has_winsock);
defsubr (&Sw32_unload_winsock);
#endif
+ defsubr (&Sw32_short_file_name);
+ defsubr (&Sw32_long_file_name);
+ defsubr (&Sw32_set_process_priority);
+ defsubr (&Sw32_get_locale_info);
+ defsubr (&Sw32_get_current_locale_id);
+ defsubr (&Sw32_get_default_locale_id);
+ defsubr (&Sw32_get_valid_locale_ids);
+ defsubr (&Sw32_set_current_locale);
+
+ defsubr (&Sw32_get_console_codepage);
+ defsubr (&Sw32_set_console_codepage);
+ defsubr (&Sw32_get_console_output_codepage);
+ defsubr (&Sw32_set_console_output_codepage);
+ defsubr (&Sw32_get_valid_codepages);
+ defsubr (&Sw32_get_codepage_charset);
+
+ defsubr (&Sw32_get_valid_keyboard_layouts);
+ defsubr (&Sw32_get_keyboard_layout);
+ defsubr (&Sw32_set_keyboard_layout);
DEFVAR_LISP ("w32-quote-process-args", &Vw32_quote_process_args,
- "Non-nil enables quoting of process arguments to ensure correct parsing.\n\
-Because Windows does not directly pass argv arrays to child processes,\n\
-programs have to reconstruct the argv array by parsing the command\n\
-line string. For an argument to contain a space, it must be enclosed\n\
-in double quotes or it will be parsed as multiple arguments.\n\
-\n\
-However, the argument list to call-process is not always correctly\n\
-constructed (or arguments have already been quoted), so enabling this\n\
-option may cause unexpected behavior.");
- Vw32_quote_process_args = Qnil;
+ doc: /* Non-nil enables quoting of process arguments to ensure correct parsing.
+Because Windows does not directly pass argv arrays to child processes,
+programs have to reconstruct the argv array by parsing the command
+line string. For an argument to contain a space, it must be enclosed
+in double quotes or it will be parsed as multiple arguments.
+
+If the value is a character, that character will be used to escape any
+quote characters that appear, otherwise a suitable escape character
+will be chosen based on the type of the program. */);
+ Vw32_quote_process_args = Qt;
DEFVAR_LISP ("w32-start-process-show-window",
&Vw32_start_process_show_window,
- "When nil, processes started via start-process hide their windows.\n\
-When non-nil, they show their window in the method of their choice.");
+ doc: /* When nil, new child processes hide their windows.
+When non-nil, they show their window in the method of their choice.
+This variable doesn't affect GUI applications, which will never be hidden. */);
Vw32_start_process_show_window = Qnil;
- DEFVAR_INT ("w32-pipe-read-delay", &Vw32_pipe_read_delay,
- "Forced delay before reading subprocess output.\n\
-This is done to improve the buffering of subprocess output, by\n\
-avoiding the inefficiency of frequently reading small amounts of data.\n\
-\n\
-If positive, the value is the number of milliseconds to sleep before\n\
-reading the subprocess output. If negative, the magnitude is the number\n\
-of time slices to wait (effectively boosting the priority of the child\n\
-process temporarily). A value of zero disables waiting entirely.");
- Vw32_pipe_read_delay = 50;
+ DEFVAR_LISP ("w32-start-process-share-console",
+ &Vw32_start_process_share_console,
+ doc: /* When nil, new child processes are given a new console.
+When non-nil, they share the Emacs console; this has the limitation of
+allowing only one DOS subprocess to run at a time (whether started directly
+or indirectly by Emacs), and preventing Emacs from cleanly terminating the
+subprocess group, but may allow Emacs to interrupt a subprocess that doesn't
+otherwise respond to interrupts from Emacs. */);
+ Vw32_start_process_share_console = Qnil;
+
+ DEFVAR_LISP ("w32-start-process-inherit-error-mode",
+ &Vw32_start_process_inherit_error_mode,
+ doc: /* When nil, new child processes revert to the default error mode.
+When non-nil, they inherit their error mode setting from Emacs, which stops
+them blocking when trying to access unmounted drives etc. */);
+ Vw32_start_process_inherit_error_mode = Qt;
+
+ DEFVAR_INT ("w32-pipe-read-delay", &w32_pipe_read_delay,
+ doc: /* Forced delay before reading subprocess output.
+This is done to improve the buffering of subprocess output, by
+avoiding the inefficiency of frequently reading small amounts of data.
+
+If positive, the value is the number of milliseconds to sleep before
+reading the subprocess output. If negative, the magnitude is the number
+of time slices to wait (effectively boosting the priority of the child
+process temporarily). A value of zero disables waiting entirely. */);
+ w32_pipe_read_delay = 50;
DEFVAR_LISP ("w32-downcase-file-names", &Vw32_downcase_file_names,
- "Non-nil means convert all-upper case file names to lower case.\n\
-This applies when performing completions and file name expansion.");
+ doc: /* Non-nil means convert all-upper case file names to lower case.
+This applies when performing completions and file name expansion.
+Note that the value of this setting also affects remote file names,
+so you probably don't want to set to non-nil if you use case-sensitive
+filesystems via ange-ftp. */);
Vw32_downcase_file_names = Qnil;
+
+#if 0
+ DEFVAR_LISP ("w32-generate-fake-inodes", &Vw32_generate_fake_inodes,
+ doc: /* Non-nil means attempt to fake realistic inode values.
+This works by hashing the truename of files, and should detect
+aliasing between long and short (8.3 DOS) names, but can have
+false positives because of hash collisions. Note that determing
+the truename of a file can be slow. */);
+ Vw32_generate_fake_inodes = Qnil;
+#endif
+
+ DEFVAR_LISP ("w32-get-true-file-attributes", &Vw32_get_true_file_attributes,
+ doc: /* Non-nil means determine accurate link count in `file-attributes'.
+Note that this option is only useful for files on NTFS volumes, where hard links
+are supported. Moreover, it slows down `file-attributes' noticeably. */);
+ Vw32_get_true_file_attributes = Qt;
+
+ staticpro (&Vw32_valid_locale_ids);
+ staticpro (&Vw32_valid_codepages);
}
/* end of ntproc.c */
+
+/* arch-tag: 23d3a34c-06d2-48a1-833b-ac7609aa5250
+ (do not change this comment) */