/* Synchronous subprocess invocation for GNU Emacs.
- Copyright (C) 1985, 1986, 1987, 1988 Free Software Foundation, Inc.
+ Copyright (C) 1985,86,87,88,93,94,95,99, 2000, 2001
+ 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 1, or (at your option)
+the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Emacs is distributed in the hope that it will be useful,
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, 675 Mass Ave, Cambridge, MA 02139, USA. */
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+#include <config.h>
#include <signal.h>
+#include <errno.h>
+#include <stdio.h>
-#include "config.h"
+#ifndef USE_CRT_DLL
+extern int errno;
+#endif
/* Define SIGCHLD as an alias for SIGCLD. */
#endif /* SIGCLD */
#include <sys/types.h>
-#define PRIO_PROCESS 0
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
#include <sys/file.h>
#ifdef USG5
+#define INCLUDED_FCNTL
#include <fcntl.h>
#endif
+#ifdef WINDOWSNT
+#define NOMINMAX
+#include <windows.h>
+#include <stdlib.h> /* for proper declaration of environ */
+#include <fcntl.h>
+#include "w32.h"
+#define _P_NOWAIT 1 /* from process.h */
+#endif
+
+#ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
+#define INCLUDED_FCNTL
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <errno.h>
+#endif /* MSDOS */
+
#ifndef O_RDONLY
#define O_RDONLY 0
#endif
#include "lisp.h"
#include "commands.h"
#include "buffer.h"
-#include "paths.h"
+#include "charset.h"
+#include "ccl.h"
+#include "coding.h"
+#include "composite.h"
+#include <epaths.h>
#include "process.h"
+#include "syssignal.h"
+#include "systty.h"
+
+#ifdef MSDOS
+#include "msdos.h"
+#endif
#ifdef VMS
extern noshare char **environ;
#else
+#ifndef USE_CRT_DLL
extern char **environ;
#endif
+#endif
-#define max(a, b) ((a) > (b) ? (a) : (b))
+#ifdef HAVE_SETPGID
+#if !defined (USG) || defined (BSD_PGRPS)
+#undef setpgrp
+#define setpgrp setpgid
+#endif
+#endif
-Lisp_Object Vexec_path, Vexec_directory;
+Lisp_Object Vexec_path, Vexec_directory, Vexec_suffixes;
+Lisp_Object Vdata_directory, Vdoc_directory;
+Lisp_Object Vconfigure_info_directory, Vshared_game_score_directory;
+Lisp_Object Vtemp_file_name_pattern;
Lisp_Object Vshell_file_name;
-#ifndef MAINTAIN_ENVIRONMENT
-/* List of strings to append to front of environment of
- all subprocesses when they are started. */
-
Lisp_Object Vprocess_environment;
-#endif
+
+#ifdef DOS_NT
+Lisp_Object Qbuffer_file_type;
+#endif /* DOS_NT */
/* True iff we are about to fork off a synchronous process or if we
are waiting for it. */
/* If synch_process_death is zero,
this is exit code of synchronous subprocess. */
int synch_process_retcode;
+
+extern Lisp_Object Vdoc_file_name;
+
+extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system;
\f
+/* Clean up when exiting Fcall_process.
+ On MSDOS, delete the temporary file on any kind of termination.
+ On Unix, kill the process and any children on termination by signal. */
+
+/* Nonzero if this is termination due to exit. */
+static int call_process_exited;
+
#ifndef VMS /* VMS version is in vmsproc.c. */
+static Lisp_Object
+call_process_kill (fdpid)
+ Lisp_Object fdpid;
+{
+ emacs_close (XFASTINT (Fcar (fdpid)));
+ EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL);
+ synch_process_alive = 0;
+ return Qnil;
+}
+
Lisp_Object
call_process_cleanup (fdpid)
Lisp_Object fdpid;
{
- register Lisp_Object fd, pid;
- fd = Fcar (fdpid);
- pid = Fcdr (fdpid);
- close (XFASTINT (fd));
- kill (XFASTINT (pid), SIGKILL);
+#if defined (MSDOS) || defined (MAC_OS8)
+ /* for MSDOS fdpid is really (fd . tempfile) */
+ register Lisp_Object file;
+ file = Fcdr (fdpid);
+ emacs_close (XFASTINT (Fcar (fdpid)));
+ if (strcmp (SDATA (file), NULL_DEVICE) != 0)
+ unlink (SDATA (file));
+#else /* not MSDOS and not MAC_OS8 */
+ register int pid = XFASTINT (Fcdr (fdpid));
+
+ if (call_process_exited)
+ {
+ emacs_close (XFASTINT (Fcar (fdpid)));
+ return Qnil;
+ }
+
+ if (EMACS_KILLPG (pid, SIGINT) == 0)
+ {
+ int count = SPECPDL_INDEX ();
+ record_unwind_protect (call_process_kill, fdpid);
+ message1 ("Waiting for process to die...(type C-g again to kill it instantly)");
+ immediate_quit = 1;
+ QUIT;
+ wait_for_termination (pid);
+ immediate_quit = 0;
+ specpdl_ptr = specpdl + count; /* Discard the unwind protect. */
+ message1 ("Waiting for process to die...done");
+ }
synch_process_alive = 0;
+ emacs_close (XFASTINT (Fcar (fdpid)));
+#endif /* not MSDOS */
return Qnil;
}
DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0,
- "Call PROGRAM synchronously in separate process.\n\
-The program's input comes from file INFILE (nil means `/dev/null').\n\
-Insert output in BUFFER before point; t means current buffer;\n\
- nil for BUFFER means discard it; 0 means discard and don't wait.\n\
-Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\
-Remaining arguments are strings passed as command arguments to PROGRAM.\n\
-If BUFFER is nil or 0, returns immediately with value nil.\n\
-Otherwise waits for PROGRAM to terminate\n\
-and returns a numeric exit status or a signal name as a string.\n\
-If you quit, the process is killed with SIGKILL.")
- (nargs, args)
+ doc: /* Call PROGRAM synchronously in separate process.
+The remaining arguments are optional.
+The program's input comes from file INFILE (nil means `/dev/null').
+Insert output in BUFFER before point; t means current buffer;
+ nil for BUFFER means discard it; 0 means discard and don't wait.
+BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,
+REAL-BUFFER says what to do with standard output, as above,
+while STDERR-FILE says what to do with standard error in the child.
+STDERR-FILE may be nil (discard standard error output),
+t (mix it with ordinary output), or a file name string.
+
+Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted.
+Remaining arguments are strings passed as command arguments to PROGRAM.
+
+If BUFFER is 0, `call-process' returns immediately with value nil.
+Otherwise it waits for PROGRAM to terminate
+and returns a numeric exit status or a signal description string.
+If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.
+
+usage: (call-process PROGRAM &optional INFILE BUFFER DISPLAY &rest ARGS) */)
+ (nargs, args)
int nargs;
register Lisp_Object *args;
{
- Lisp_Object display, buffer, path;
+ Lisp_Object infile, buffer, current_dir, display, path;
int fd[2];
int filefd;
register int pid;
- char buf[1024];
- int count = specpdl_ptr - specpdl;
- register unsigned char **new_argv
- = (unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *));
+ char buf[16384];
+ char *bufptr = buf;
+ int bufsize = 16384;
+ int count = SPECPDL_INDEX ();
+
+ register const unsigned char **new_argv
+ = (const unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *));
struct buffer *old = current_buffer;
+ /* File to use for stderr in the child.
+ t means use same as standard output. */
+ Lisp_Object error_file;
+#ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
+ char *outf, *tempfile;
+ int outfilefd;
+#endif
+#ifdef MAC_OS8
+ char *tempfile;
+ int outfilefd;
+#endif
#if 0
int mask;
#endif
- struct gcpro gcpro1;
+ struct coding_system process_coding; /* coding-system of process output */
+ struct coding_system argument_coding; /* coding-system of arguments */
+ /* Set to the return value of Ffind_operation_coding_system. */
+ Lisp_Object coding_systems;
- GCPRO1 (*args);
- gcpro1.nvars = nargs;
+ /* Qt denotes that Ffind_operation_coding_system is not yet called. */
+ coding_systems = Qt;
- CHECK_STRING (args[0], 0);
+ CHECK_STRING (args[0]);
- if (nargs <= 1 || NULL (args[1]))
- args[1] = build_string ("/dev/null");
- else
- args[1] = Fexpand_file_name (args[1], current_buffer->directory);
+ error_file = Qt;
- CHECK_STRING (args[1], 1);
+#ifndef subprocesses
+ /* Without asynchronous processes we cannot have BUFFER == 0. */
+ if (nargs >= 3
+ && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2])))
+ error ("Operating system cannot handle asynchronous subprocesses");
+#endif /* subprocesses */
+ /* Decide the coding-system for giving arguments. */
{
- register Lisp_Object tem;
- buffer = tem = args[2];
- if (nargs <= 2)
- buffer = Qnil;
- else if (!(EQ (tem, Qnil) || EQ (tem, Qt)
- || XFASTINT (tem) == 0))
+ Lisp_Object val, *args2;
+ int i;
+
+ /* If arguments are supplied, we may have to encode them. */
+ if (nargs >= 5)
{
- buffer = Fget_buffer (tem);
- CHECK_BUFFER (buffer, 2);
+ int must_encode = 0;
+
+ for (i = 4; i < nargs; i++)
+ CHECK_STRING (args[i]);
+
+ for (i = 4; i < nargs; i++)
+ if (STRING_MULTIBYTE (args[i]))
+ must_encode = 1;
+
+ if (!NILP (Vcoding_system_for_write))
+ val = Vcoding_system_for_write;
+ else if (! must_encode)
+ val = Qnil;
+ else
+ {
+ args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2);
+ args2[0] = Qcall_process;
+ for (i = 0; i < nargs; i++) args2[i + 1] = args[i];
+ coding_systems = Ffind_operation_coding_system (nargs + 1, args2);
+ if (CONSP (coding_systems))
+ val = XCDR (coding_systems);
+ else if (CONSP (Vdefault_process_coding_system))
+ val = XCDR (Vdefault_process_coding_system);
+ else
+ val = Qnil;
+ }
+ setup_coding_system (Fcheck_coding_system (val), &argument_coding);
}
}
- display = nargs >= 3 ? args[3] : Qnil;
+ if (nargs >= 2 && ! NILP (args[1]))
+ {
+ infile = Fexpand_file_name (args[1], current_buffer->directory);
+ CHECK_STRING (infile);
+ }
+ else
+ infile = build_string (NULL_DEVICE);
+ if (nargs >= 3)
+ {
+ buffer = args[2];
+
+ /* If BUFFER is a list, its meaning is
+ (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */
+ if (CONSP (buffer))
+ {
+ if (CONSP (XCDR (buffer)))
+ {
+ Lisp_Object stderr_file;
+ stderr_file = XCAR (XCDR (buffer));
+
+ if (NILP (stderr_file) || EQ (Qt, stderr_file))
+ error_file = stderr_file;
+ else
+ error_file = Fexpand_file_name (stderr_file, Qnil);
+ }
+
+ buffer = XCAR (buffer);
+ }
+
+ if (!(EQ (buffer, Qnil)
+ || EQ (buffer, Qt)
+ || INTEGERP (buffer)))
+ {
+ Lisp_Object spec_buffer;
+ spec_buffer = buffer;
+ buffer = Fget_buffer_create (buffer);
+ /* Mention the buffer name for a better error message. */
+ if (NILP (buffer))
+ CHECK_BUFFER (spec_buffer);
+ CHECK_BUFFER (buffer);
+ }
+ }
+ else
+ buffer = Qnil;
+
+ /* Make sure that the child will be able to chdir to the current
+ buffer's current directory, or its unhandled equivalent. We
+ can't just have the child check for an error when it does the
+ chdir, since it's in a vfork.
+
+ We have to GCPRO around this because Fexpand_file_name,
+ Funhandled_file_name_directory, and Ffile_accessible_directory_p
+ might call a file name handling function. The argument list is
+ protected by the caller, so all we really have to worry about is
+ buffer. */
{
- register int i;
- for (i = 4; i < nargs; i++)
- {
- CHECK_STRING (args[i], i);
- new_argv[i - 3] = XSTRING (args[i])->data;
- }
- /* Program name is first command arg */
- new_argv[0] = XSTRING (args[0])->data;
- new_argv[i - 3] = 0;
+ struct gcpro gcpro1, gcpro2, gcpro3;
+
+ current_dir = current_buffer->directory;
+
+ GCPRO3 (infile, buffer, current_dir);
+
+ current_dir
+ = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir),
+ Qnil);
+ if (NILP (Ffile_accessible_directory_p (current_dir)))
+ report_file_error ("Setting current directory",
+ Fcons (current_buffer->directory, Qnil));
+
+ UNGCPRO;
}
- filefd = open (XSTRING (args[1])->data, O_RDONLY, 0);
+ display = nargs >= 4 ? args[3] : Qnil;
+
+ filefd = emacs_open (SDATA (infile), O_RDONLY, 0);
if (filefd < 0)
{
- report_file_error ("Opening process input file", Fcons (args[1], Qnil));
+ report_file_error ("Opening process input file", Fcons (infile, Qnil));
}
/* Search for program; barf if not found. */
- openp (Vexec_path, args[0], "", &path, 1);
- if (NULL (path))
+ {
+ struct gcpro gcpro1;
+
+ GCPRO1 (current_dir);
+ openp (Vexec_path, args[0], Vexec_suffixes, &path, make_number (X_OK));
+ UNGCPRO;
+ }
+ if (NILP (path))
{
- close (filefd);
+ emacs_close (filefd);
report_file_error ("Searching for program", Fcons (args[0], Qnil));
}
- new_argv[0] = XSTRING (path)->data;
+ new_argv[0] = SDATA (path);
+ if (nargs > 4)
+ {
+ register int i;
+ struct gcpro gcpro1, gcpro2, gcpro3;
+
+ GCPRO3 (infile, buffer, current_dir);
+ argument_coding.dst_multibyte = 0;
+ for (i = 4; i < nargs; i++)
+ {
+ argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]);
+ if (CODING_REQUIRE_ENCODING (&argument_coding))
+ {
+ /* We must encode this argument. */
+ args[i] = encode_coding_string (args[i], &argument_coding, 1);
+ if (argument_coding.type == coding_type_ccl)
+ setup_ccl_program (&(argument_coding.spec.ccl.encoder), Qnil);
+ }
+ new_argv[i - 3] = SDATA (args[i]);
+ }
+ UNGCPRO;
+ new_argv[nargs - 3] = 0;
+ }
+ else
+ new_argv[1] = 0;
+
+#ifdef MSDOS /* MW, July 1993 */
+ if ((outf = egetenv ("TMPDIR")))
+ strcpy (tempfile = alloca (strlen (outf) + 20), outf);
+ else
+ {
+ tempfile = alloca (20);
+ *tempfile = '\0';
+ }
+ dostounix_filename (tempfile);
+ if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/')
+ strcat (tempfile, "/");
+ strcat (tempfile, "detmp.XXX");
+ mktemp (tempfile);
+
+ outfilefd = creat (tempfile, S_IREAD | S_IWRITE);
+ if (outfilefd < 0)
+ {
+ emacs_close (filefd);
+ report_file_error ("Opening process output file",
+ Fcons (build_string (tempfile), Qnil));
+ }
+ fd[0] = filefd;
+ fd[1] = outfilefd;
+#endif /* MSDOS */
+
+#ifdef MAC_OS8
+ /* Since we don't have pipes on the Mac, create a temporary file to
+ hold the output of the subprocess. */
+ tempfile = (char *) alloca (SBYTES (Vtemp_file_name_pattern) + 1);
+ bcopy (SDATA (Vtemp_file_name_pattern), tempfile,
+ SBYTES (Vtemp_file_name_pattern) + 1);
+
+ mktemp (tempfile);
+
+ outfilefd = creat (tempfile, S_IREAD | S_IWRITE);
+ if (outfilefd < 0)
+ {
+ close (filefd);
+ report_file_error ("Opening process output file",
+ Fcons (build_string (tempfile), Qnil));
+ }
+ fd[0] = filefd;
+ fd[1] = outfilefd;
+#endif /* MAC_OS8 */
- if (XTYPE (buffer) == Lisp_Int)
- fd[1] = open ("/dev/null", O_WRONLY), fd[0] = -1;
+ if (INTEGERP (buffer))
+ fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1;
else
{
- pipe (fd);
+#ifndef MSDOS
+#ifndef MAC_OS8
+ errno = 0;
+ if (pipe (fd) == -1)
+ {
+ emacs_close (filefd);
+ report_file_error ("Creating process pipe", Qnil);
+ }
+#endif
+#endif
#if 0
/* Replaced by close_process_descs */
set_exclusive_use (fd[0]);
Protect it from permanent change. */
register char **save_environ = environ;
register int fd1 = fd[1];
- char **env;
-
-#ifdef MAINTAIN_ENVIRONMENT
- env = (char **) alloca (size_of_current_environ ());
- get_current_environ (env);
-#else
- env = environ;
-#endif /* MAINTAIN_ENVIRONMENT */
+ int fd_error = fd1;
#if 0 /* Some systems don't have sigblock. */
mask = sigblock (sigmask (SIGCHLD));
/* Record that we're about to create a synchronous process. */
synch_process_alive = 1;
+ /* These vars record information from process termination.
+ Clear them now before process can possibly terminate,
+ to avoid timing error if process terminates soon. */
+ synch_process_death = 0;
+ synch_process_retcode = 0;
+
+ if (NILP (error_file))
+ fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0);
+ else if (STRINGP (error_file))
+ {
+#ifdef DOS_NT
+ fd_error = emacs_open (SDATA (error_file),
+ O_WRONLY | O_TRUNC | O_CREAT | O_TEXT,
+ S_IREAD | S_IWRITE);
+#else /* not DOS_NT */
+ fd_error = creat (SDATA (error_file), 0666);
+#endif /* not DOS_NT */
+ }
+
+ if (fd_error < 0)
+ {
+ emacs_close (filefd);
+ if (fd[0] != filefd)
+ emacs_close (fd[0]);
+ if (fd1 >= 0)
+ emacs_close (fd1);
+#ifdef MSDOS
+ unlink (tempfile);
+#endif
+ report_file_error ("Cannot redirect stderr",
+ Fcons ((NILP (error_file)
+ ? build_string (NULL_DEVICE) : error_file),
+ Qnil));
+ }
+
+ current_dir = ENCODE_FILE (current_dir);
+
+#ifdef MAC_OS8
+ {
+ /* Call run_mac_command in sysdep.c here directly instead of doing
+ a child_setup as for MSDOS and other platforms. Note that this
+ code does not handle passing the environment to the synchronous
+ Mac subprocess. */
+ char *infn, *outfn, *errfn, *currdn;
+
+ /* close these files so subprocess can write to them */
+ close (outfilefd);
+ if (fd_error != outfilefd)
+ close (fd_error);
+ fd1 = -1; /* No harm in closing that one! */
+
+ infn = SDATA (infile);
+ outfn = tempfile;
+ if (NILP (error_file))
+ errfn = NULL_DEVICE;
+ else if (EQ (Qt, error_file))
+ errfn = outfn;
+ else
+ errfn = SDATA (error_file);
+ currdn = SDATA (current_dir);
+ pid = run_mac_command (new_argv, currdn, infn, outfn, errfn);
+
+ /* Record that the synchronous process exited and note its
+ termination status. */
+ synch_process_alive = 0;
+ synch_process_retcode = pid;
+ if (synch_process_retcode < 0) /* means it couldn't be exec'ed */
+ {
+ synchronize_system_messages_locale ();
+ synch_process_death = strerror (errno);
+ }
+
+ /* Since CRLF is converted to LF within `decode_coding', we can
+ always open a file with binary mode. */
+ fd[0] = open (tempfile, O_BINARY);
+ if (fd[0] < 0)
+ {
+ unlink (tempfile);
+ close (filefd);
+ report_file_error ("Cannot re-open temporary file", Qnil);
+ }
+ }
+#else /* not MAC_OS8 */
+#ifdef MSDOS /* MW, July 1993 */
+ /* Note that on MSDOS `child_setup' actually returns the child process
+ exit status, not its PID, so we assign it to `synch_process_retcode'
+ below. */
+ pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv,
+ 0, current_dir);
+
+ /* Record that the synchronous process exited and note its
+ termination status. */
+ synch_process_alive = 0;
+ synch_process_retcode = pid;
+ if (synch_process_retcode < 0) /* means it couldn't be exec'ed */
+ {
+ synchronize_system_messages_locale ();
+ synch_process_death = strerror (errno);
+ }
+
+ emacs_close (outfilefd);
+ if (fd_error != outfilefd)
+ emacs_close (fd_error);
+ fd1 = -1; /* No harm in closing that one! */
+ /* Since CRLF is converted to LF within `decode_coding', we can
+ always open a file with binary mode. */
+ fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0);
+ if (fd[0] < 0)
+ {
+ unlink (tempfile);
+ emacs_close (filefd);
+ report_file_error ("Cannot re-open temporary file", Qnil);
+ }
+#else /* not MSDOS */
+#ifdef WINDOWSNT
+ pid = child_setup (filefd, fd1, fd_error, (char **) new_argv,
+ 0, current_dir);
+#else /* not WINDOWSNT */
pid = vfork ();
if (pid == 0)
{
if (fd[0] >= 0)
- close (fd[0]);
-#ifdef USG
+ emacs_close (fd[0]);
+#ifdef HAVE_SETSID
+ setsid ();
+#endif
+#if defined (USG) && !defined (BSD_PGRPS)
setpgrp ();
#else
setpgrp (pid, pid);
#endif /* USG */
- child_setup (filefd, fd1, fd1, new_argv, env, 0);
+ child_setup (filefd, fd1, fd_error, (char **) new_argv,
+ 0, current_dir);
}
+#endif /* not WINDOWSNT */
-#if 0
- /* Tell SIGCHLD handler to look for this pid. */
- synch_process_pid = pid;
- /* Now let SIGCHLD come through. */
- sigsetmask (mask);
-#endif
+ /* The MSDOS case did this already. */
+ if (fd_error >= 0)
+ emacs_close (fd_error);
+#endif /* not MSDOS */
+#endif /* not MAC_OS8 */
environ = save_environ;
- close (filefd);
- close (fd1);
+ /* Close most of our fd's, but not fd[0]
+ since we will use that to read input from. */
+ emacs_close (filefd);
+ if (fd1 >= 0 && fd1 != fd_error)
+ emacs_close (fd1);
}
if (pid < 0)
{
- close (fd[0]);
+ if (fd[0] >= 0)
+ emacs_close (fd[0]);
report_file_error ("Doing vfork", Qnil);
}
- if (XTYPE (buffer) == Lisp_Int)
+ if (INTEGERP (buffer))
{
+ if (fd[0] >= 0)
+ emacs_close (fd[0]);
#ifndef subprocesses
+ /* If Emacs has been built with asynchronous subprocess support,
+ we don't need to do this, I think because it will then have
+ the facilities for handling SIGCHLD. */
wait_without_blocking ();
#endif /* subprocesses */
-
- UNGCPRO;
return Qnil;
}
+ /* Enable sending signal if user quits below. */
+ call_process_exited = 0;
+
+#if defined(MSDOS) || defined(MAC_OS8)
+ /* MSDOS needs different cleanup information. */
+ record_unwind_protect (call_process_cleanup,
+ Fcons (make_number (fd[0]), build_string (tempfile)));
+#else
record_unwind_protect (call_process_cleanup,
Fcons (make_number (fd[0]), make_number (pid)));
+#endif /* not MSDOS and not MAC_OS8 */
- if (XTYPE (buffer) == Lisp_Buffer)
+ if (BUFFERP (buffer))
Fset_buffer (buffer);
+ if (NILP (buffer))
+ {
+ /* If BUFFER is nil, we must read process output once and then
+ discard it, so setup coding system but with nil. */
+ setup_coding_system (Qnil, &process_coding);
+ }
+ else
+ {
+ Lisp_Object val, *args2;
+
+ val = Qnil;
+ if (!NILP (Vcoding_system_for_read))
+ val = Vcoding_system_for_read;
+ else
+ {
+ if (EQ (coding_systems, Qt))
+ {
+ int i;
+
+ args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2);
+ args2[0] = Qcall_process;
+ for (i = 0; i < nargs; i++) args2[i + 1] = args[i];
+ coding_systems
+ = Ffind_operation_coding_system (nargs + 1, args2);
+ }
+ if (CONSP (coding_systems))
+ val = XCAR (coding_systems);
+ else if (CONSP (Vdefault_process_coding_system))
+ val = XCAR (Vdefault_process_coding_system);
+ else
+ val = Qnil;
+ }
+ setup_coding_system (Fcheck_coding_system (val), &process_coding);
+ /* In unibyte mode, character code conversion should not take
+ place but EOL conversion should. So, setup raw-text or one
+ of the subsidiary according to the information just setup. */
+ if (NILP (current_buffer->enable_multibyte_characters)
+ && !NILP (val))
+ setup_raw_text_coding_system (&process_coding);
+ }
+ process_coding.src_multibyte = 0;
+ process_coding.dst_multibyte
+ = (BUFFERP (buffer)
+ ? ! NILP (XBUFFER (buffer)->enable_multibyte_characters)
+ : ! NILP (current_buffer->enable_multibyte_characters));
+
immediate_quit = 1;
QUIT;
{
register int nread;
-
- while ((nread = read (fd[0], buf, sizeof buf)) > 0)
+ int first = 1;
+ int total_read = 0;
+ int carryover = 0;
+ int display_on_the_fly = !NILP (display) && INTERACTIVE;
+ struct coding_system saved_coding;
+ int pt_orig = PT, pt_byte_orig = PT_BYTE;
+ int inserted;
+
+ saved_coding = process_coding;
+ if (process_coding.composing != COMPOSITION_DISABLED)
+ coding_allocate_composition_data (&process_coding, PT);
+ while (1)
{
+ /* Repeatedly read until we've filled as much as possible
+ of the buffer size we have. But don't read
+ less than 1024--save that for the next bufferful. */
+ nread = carryover;
+ while (nread < bufsize - 1024)
+ {
+ int this_read = emacs_read (fd[0], bufptr + nread,
+ bufsize - nread);
+
+ if (this_read < 0)
+ goto give_up;
+
+ if (this_read == 0)
+ {
+ process_coding.mode |= CODING_MODE_LAST_BLOCK;
+ break;
+ }
+
+ nread += this_read;
+ total_read += this_read;
+
+ if (display_on_the_fly)
+ break;
+ }
+
+ /* Now NREAD is the total amount of data in the buffer. */
immediate_quit = 0;
- if (!NULL (buffer))
- insert (buf, nread);
- if (!NULL (display) && INTERACTIVE)
- redisplay_preserve_echo_area ();
+
+ if (!NILP (buffer))
+ {
+ if (! CODING_MAY_REQUIRE_DECODING (&process_coding))
+ insert_1_both (bufptr, nread, nread, 0, 1, 0);
+ else
+ { /* We have to decode the input. */
+ int size;
+ char *decoding_buf;
+
+ repeat_decoding:
+ size = decoding_buffer_size (&process_coding, nread);
+ decoding_buf = (char *) xmalloc (size);
+
+ /* We can't use the macro CODING_REQUIRE_DETECTION
+ because it always returns nonzero if the coding
+ system requires EOL detection. Here, we have to
+ check only whether or not the coding system
+ requires text-encoding detection. */
+ if (process_coding.type == coding_type_undecided)
+ {
+ detect_coding (&process_coding, bufptr, nread);
+ if (process_coding.composing != COMPOSITION_DISABLED)
+ coding_allocate_composition_data (&process_coding, PT);
+ }
+ if (process_coding.cmp_data)
+ process_coding.cmp_data->char_offset = PT;
+
+ decode_coding (&process_coding, bufptr, decoding_buf,
+ nread, size);
+
+ if (display_on_the_fly
+ && saved_coding.type == coding_type_undecided
+ && process_coding.type != coding_type_undecided)
+ {
+ /* We have detected some coding system. But,
+ there's a possibility that the detection was
+ done by insufficient data. So, we give up
+ displaying on the fly. */
+ xfree (decoding_buf);
+ display_on_the_fly = 0;
+ process_coding = saved_coding;
+ carryover = nread;
+ continue;
+ }
+
+ if (process_coding.produced > 0)
+ insert_1_both (decoding_buf, process_coding.produced_char,
+ process_coding.produced, 0, 1, 0);
+ xfree (decoding_buf);
+
+ if (process_coding.result == CODING_FINISH_INCONSISTENT_EOL)
+ {
+ Lisp_Object eol_type, coding;
+
+ if (process_coding.eol_type == CODING_EOL_CR)
+ {
+ /* CRs have been replaced with LFs. Undo
+ that in the text inserted above. */
+ unsigned char *p;
+
+ move_gap_both (PT, PT_BYTE);
+
+ p = BYTE_POS_ADDR (pt_byte_orig);
+ for (; p < GPT_ADDR; ++p)
+ if (*p == '\n')
+ *p = '\r';
+ }
+ else if (process_coding.eol_type == CODING_EOL_CRLF)
+ {
+ /* CR LFs have been replaced with LFs. Undo
+ that by inserting CRs in front of LFs in
+ the text inserted above. */
+ EMACS_INT bytepos, old_pt, old_pt_byte, nCR;
+
+ old_pt = PT;
+ old_pt_byte = PT_BYTE;
+ nCR = 0;
+
+ for (bytepos = PT_BYTE - 1;
+ bytepos >= pt_byte_orig;
+ --bytepos)
+ if (FETCH_BYTE (bytepos) == '\n')
+ {
+ EMACS_INT charpos = BYTE_TO_CHAR (bytepos);
+ TEMP_SET_PT_BOTH (charpos, bytepos);
+ insert_1_both ("\r", 1, 1, 0, 1, 0);
+ ++nCR;
+ }
+
+ TEMP_SET_PT_BOTH (old_pt + nCR, old_pt_byte + nCR);
+ }
+
+ /* Set the coding system symbol to that for
+ Unix-like EOL. */
+ eol_type = Fget (saved_coding.symbol, Qeol_type);
+ if (VECTORP (eol_type)
+ && ASIZE (eol_type) == 3
+ && SYMBOLP (AREF (eol_type, CODING_EOL_LF)))
+ coding = AREF (eol_type, CODING_EOL_LF);
+ else
+ coding = saved_coding.symbol;
+
+ process_coding.symbol = coding;
+ process_coding.eol_type = CODING_EOL_LF;
+ process_coding.mode
+ &= ~CODING_MODE_INHIBIT_INCONSISTENT_EOL;
+ }
+
+ nread -= process_coding.consumed;
+ carryover = nread;
+ if (carryover > 0)
+ /* As CARRYOVER should not be that large, we had
+ better avoid overhead of bcopy. */
+ BCOPY_SHORT (bufptr + process_coding.consumed, bufptr,
+ carryover);
+ if (process_coding.result == CODING_FINISH_INSUFFICIENT_CMP)
+ {
+ /* The decoding ended because of insufficient data
+ area to record information about composition.
+ We must try decoding with additional data area
+ before reading more output for the process. */
+ coding_allocate_composition_data (&process_coding, PT);
+ goto repeat_decoding;
+ }
+ }
+ }
+
+ if (process_coding.mode & CODING_MODE_LAST_BLOCK)
+ break;
+
+ /* Make the buffer bigger as we continue to read more data,
+ but not past 64k. */
+ if (bufsize < 64 * 1024 && total_read > 32 * bufsize)
+ {
+ char *tempptr;
+ bufsize *= 2;
+
+ tempptr = (char *) alloca (bufsize);
+ bcopy (bufptr, tempptr, bufsize / 2);
+ bufptr = tempptr;
+ }
+
+ if (!NILP (display) && INTERACTIVE)
+ {
+ if (first)
+ prepare_menu_bars ();
+ first = 0;
+ redisplay_preserve_echo_area (1);
+ }
immediate_quit = 1;
QUIT;
}
+ give_up: ;
+
+ if (!NILP (buffer)
+ && process_coding.cmp_data)
+ {
+ coding_restore_composition (&process_coding, Fcurrent_buffer ());
+ coding_free_composition_data (&process_coding);
+ }
+
+ {
+ int post_read_count = SPECPDL_INDEX ();
+
+ record_unwind_protect (save_excursion_restore, save_excursion_save ());
+ inserted = PT - pt_orig;
+ TEMP_SET_PT_BOTH (pt_orig, pt_byte_orig);
+ if (SYMBOLP (process_coding.post_read_conversion)
+ && !NILP (Ffboundp (process_coding.post_read_conversion)))
+ call1 (process_coding.post_read_conversion, make_number (inserted));
+
+ Vlast_coding_system_used = process_coding.symbol;
+
+ /* If the caller required, let the buffer inherit the
+ coding-system used to decode the process output. */
+ if (inherit_process_coding_system)
+ call1 (intern ("after-insert-file-set-buffer-file-coding-system"),
+ make_number (total_read));
+
+ unbind_to (post_read_count, Qnil);
+ }
}
/* Wait for it to terminate, unless it already has. */
set_buffer_internal (old);
- unbind_to (count, Qnil);
+ /* Don't kill any children that the subprocess may have left behind
+ when exiting. */
+ call_process_exited = 1;
- UNGCPRO;
+ unbind_to (count, Qnil);
if (synch_process_death)
- return build_string (synch_process_death);
+ return code_convert_string_norecord (build_string (synch_process_death),
+ Vlocale_coding_system, 0);
return make_number (synch_process_retcode);
}
#endif
\f
-static void
+static Lisp_Object
delete_temp_file (name)
Lisp_Object name;
{
- unlink (XSTRING (name)->data);
+ /* Use Fdelete_file (indirectly) because that runs a file name handler.
+ We did that when writing the file, so we should do so when deleting. */
+ internal_delete_file (name);
+ return Qnil;
}
DEFUN ("call-process-region", Fcall_process_region, Scall_process_region,
- 3, MANY, 0,
- "Send text from START to END to a synchronous process running PROGRAM.\n\
-Delete the text if fourth arg DELETE is non-nil.\n\
-Insert output in BUFFER before point; t means current buffer;\n\
- nil for BUFFER means discard it; 0 means discard and don't wait.\n\
-Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\
-Remaining args are passed to PROGRAM at startup as command args.\n\
-If BUFFER is nil, returns immediately with value nil.\n\
-Otherwise waits for PROGRAM to terminate\n\
-and returns a numeric exit status or a signal name as a string.\n\
-If you quit, the process is killed with SIGKILL.")
- (nargs, args)
+ 3, MANY, 0,
+ doc: /* Send text from START to END to a synchronous process running PROGRAM.
+The remaining arguments are optional.
+Delete the text if fourth arg DELETE is non-nil.
+
+Insert output in BUFFER before point; t means current buffer;
+ nil for BUFFER means discard it; 0 means discard and don't wait.
+BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,
+REAL-BUFFER says what to do with standard output, as above,
+while STDERR-FILE says what to do with standard error in the child.
+STDERR-FILE may be nil (discard standard error output),
+t (mix it with ordinary output), or a file name string.
+
+Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted.
+Remaining args are passed to PROGRAM at startup as command args.
+
+If BUFFER is nil, `call-process-region' returns immediately with value nil.
+Otherwise it waits for PROGRAM to terminate
+and returns a numeric exit status or a signal description string.
+If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.
+
+usage: (call-process-region START END PROGRAM &optional DELETE BUFFER DISPLAY &rest ARGS) */)
+ (nargs, args)
int nargs;
register Lisp_Object *args;
{
- register Lisp_Object filename_string, start, end;
- char tempfile[20];
- int count = specpdl_ptr - specpdl;
struct gcpro gcpro1;
-
- GCPRO1 (*args);
- gcpro1.nvars = 2;
-
-#ifdef VMS
- strcpy (tempfile, "tmp:emacsXXXXXX.");
+ Lisp_Object filename_string;
+ register Lisp_Object start, end;
+ int count = SPECPDL_INDEX ();
+ /* Qt denotes we have not yet called Ffind_operation_coding_system. */
+ Lisp_Object coding_systems;
+ Lisp_Object val, *args2;
+ int i;
+#ifdef DOS_NT
+ char *tempfile;
+ char *outf = '\0';
+
+ if ((outf = egetenv ("TMPDIR"))
+ || (outf = egetenv ("TMP"))
+ || (outf = egetenv ("TEMP")))
+ strcpy (tempfile = alloca (strlen (outf) + 20), outf);
+ else
+ {
+ tempfile = alloca (20);
+ *tempfile = '\0';
+ }
+ if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1]))
+ strcat (tempfile, "/");
+ if ('/' == DIRECTORY_SEP)
+ dostounix_filename (tempfile);
+ else
+ unixtodos_filename (tempfile);
+#ifdef WINDOWSNT
+ strcat (tempfile, "emXXXXXX");
#else
- strcpy (tempfile, "/tmp/emacsXXXXXX");
+ strcat (tempfile, "detmp.XXX");
#endif
+#else /* not DOS_NT */
+ char *tempfile = (char *) alloca (SBYTES (Vtemp_file_name_pattern) + 1);
+ bcopy (SDATA (Vtemp_file_name_pattern), tempfile,
+ SBYTES (Vtemp_file_name_pattern) + 1);
+#endif /* not DOS_NT */
+
+ coding_systems = Qt;
+
+#ifdef HAVE_MKSTEMP
+ {
+ int fd = mkstemp (tempfile);
+ if (fd == -1)
+ report_file_error ("Failed to open temporary file",
+ Fcons (Vtemp_file_name_pattern, Qnil));
+ else
+ close (fd);
+ }
+#else
mktemp (tempfile);
+#endif
filename_string = build_string (tempfile);
+ GCPRO1 (filename_string);
start = args[0];
end = args[1];
- Fwrite_region (start, end, filename_string, Qnil, Qlambda);
+ /* Decide coding-system of the contents of the temporary file. */
+ if (!NILP (Vcoding_system_for_write))
+ val = Vcoding_system_for_write;
+ else if (NILP (current_buffer->enable_multibyte_characters))
+ val = Qnil;
+ else
+ {
+ args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2);
+ args2[0] = Qcall_process_region;
+ for (i = 0; i < nargs; i++) args2[i + 1] = args[i];
+ coding_systems = Ffind_operation_coding_system (nargs + 1, args2);
+ if (CONSP (coding_systems))
+ val = XCDR (coding_systems);
+ else if (CONSP (Vdefault_process_coding_system))
+ val = XCDR (Vdefault_process_coding_system);
+ else
+ val = Qnil;
+ }
+
+ {
+ int count1 = SPECPDL_INDEX ();
+
+ specbind (intern ("coding-system-for-write"), val);
+ Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil);
+
+ unbind_to (count1, Qnil);
+ }
+
+ /* Note that Fcall_process takes care of binding
+ coding-system-for-read. */
+
record_unwind_protect (delete_temp_file, filename_string);
- if (!NULL (args[3]))
+ if (nargs > 3 && !NILP (args[3]))
Fdelete_region (start, end);
- args[3] = filename_string;
- Fcall_process (nargs - 2, args + 2);
+ if (nargs > 3)
+ {
+ args += 2;
+ nargs -= 2;
+ }
+ else
+ {
+ args[0] = args[2];
+ nargs = 2;
+ }
+ args[1] = filename_string;
- UNGCPRO;
- return unbind_to (count, Qnil);
+ RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args)));
}
\f
#ifndef VMS /* VMS version is in vmsproc.c. */
+static int relocate_fd ();
+
/* This is the last thing run in a newly forked inferior
either synchronous or asynchronous.
Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2.
Therefore, the superior process must save and restore the value
of environ around the vfork and the call to this function.
- ENV is the environment for the subprocess.
-
SET_PGRP is nonzero if we should put the subprocess into a separate
- process group. */
+ process group.
-child_setup (in, out, err, new_argv, env, set_pgrp)
+ CURRENT_DIR is an elisp string giving the path of the current
+ directory the subprocess should have. Since we can't really signal
+ a decent error from within the child, this should be verified as an
+ executable directory by the parent. */
+
+int
+child_setup (in, out, err, new_argv, set_pgrp, current_dir)
int in, out, err;
register char **new_argv;
- char **env;
int set_pgrp;
+ Lisp_Object current_dir;
{
- register int pid = getpid();
+ char **env;
+ char *pwd_var;
+#ifdef WINDOWSNT
+ int cpid;
+ HANDLE handles[3];
+#endif /* WINDOWSNT */
+
+ int pid = getpid ();
- setpriority (PRIO_PROCESS, pid, 0);
+#ifdef SET_EMACS_PRIORITY
+ {
+ extern EMACS_INT emacs_priority;
+
+ if (emacs_priority < 0)
+ nice (- emacs_priority);
+ }
+#endif
#ifdef subprocesses
/* Close Emacs's descriptors that this process should not have. */
close_process_descs ();
#endif
+ /* DOS_NT isn't in a vfork, so if we are in the middle of load-file,
+ we will lose if we call close_load_descs here. */
+#ifndef DOS_NT
+ close_load_descs ();
+#endif
/* Note that use of alloca is always safe here. It's obvious for systems
that do not have true vfork or that have true (stack) alloca.
If using vfork and C_ALLOCA it is safe because that changes
the superior's static variables as if the superior had done alloca
and will be cleaned up in the usual way. */
+ {
+ register char *temp;
+ register int i;
- if (XTYPE (current_buffer->directory) == Lisp_String)
- {
- register unsigned char *temp;
- register int i;
+ i = SBYTES (current_dir);
+#ifdef MSDOS
+ /* MSDOS must have all environment variables malloc'ed, because
+ low-level libc functions that launch subsidiary processes rely
+ on that. */
+ pwd_var = (char *) xmalloc (i + 6);
+#else
+ pwd_var = (char *) alloca (i + 6);
+#endif
+ temp = pwd_var + 4;
+ bcopy ("PWD=", pwd_var, 4);
+ bcopy (SDATA (current_dir), temp, i);
+ if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP;
+ temp[i] = 0;
+
+#ifndef DOS_NT
+ /* We can't signal an Elisp error here; we're in a vfork. Since
+ the callers check the current directory before forking, this
+ should only return an error if the directory's permissions
+ are changed between the check and this chdir, but we should
+ at least check. */
+ if (chdir (temp) < 0)
+ _exit (errno);
+#endif
- i = XSTRING (current_buffer->directory)->size;
- temp = (unsigned char *) alloca (i + 2);
- bcopy (XSTRING (current_buffer->directory)->data, temp, i);
- if (temp[i - 1] != '/') temp[i++] = '/';
- temp[i] = 0;
- /* Switch to that directory, and report any error. */
- if (chdir (temp) < 0)
- report_file_error ("In chdir",
- Fcons (current_buffer->directory, Qnil));
- }
+#ifdef DOS_NT
+ /* Get past the drive letter, so that d:/ is left alone. */
+ if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2]))
+ {
+ temp += 2;
+ i -= 2;
+ }
+#endif
+
+ /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */
+ while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1]))
+ temp[--i] = 0;
+ }
-#ifndef MAINTAIN_ENVIRONMENT
/* Set `env' to a vector of the strings in Vprocess_environment. */
{
register Lisp_Object tem;
new_length = 0;
for (tem = Vprocess_environment;
- (XTYPE (tem) == Lisp_Cons
- && XTYPE (XCONS (tem)->car) == Lisp_String);
- tem = XCONS (tem)->cdr)
+ CONSP (tem) && STRINGP (XCAR (tem));
+ tem = XCDR (tem))
new_length++;
- /* new_length + 1 to include terminating 0 */
- env = new_env = (char **) alloca ((new_length + 1) * sizeof (char *));
+ /* new_length + 2 to include PWD and terminating 0. */
+ env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *));
- /* Copy the env strings into new_env. */
+ /* If we have a PWD envvar, pass one down,
+ but with corrected value. */
+ if (getenv ("PWD"))
+ *new_env++ = pwd_var;
+
+ /* Copy the Vprocess_environment strings into new_env. */
for (tem = Vprocess_environment;
- (XTYPE (tem) == Lisp_Cons
- && XTYPE (XCONS (tem)->car) == Lisp_String);
- tem = XCONS (tem)->cdr)
- *new_env++ = (char *) XSTRING (XCONS (tem)->car)->data;
+ CONSP (tem) && STRINGP (XCAR (tem));
+ tem = XCDR (tem))
+ {
+ char **ep = env;
+ char *string = (char *) SDATA (XCAR (tem));
+ /* See if this string duplicates any string already in the env.
+ If so, don't put it in.
+ When an env var has multiple definitions,
+ we keep the definition that comes first in process-environment. */
+ for (; ep != new_env; ep++)
+ {
+ char *p = *ep, *q = string;
+ while (1)
+ {
+ if (*q == 0)
+ /* The string is malformed; might as well drop it. */
+ goto duplicate;
+ if (*q != *p)
+ break;
+ if (*q == '=')
+ goto duplicate;
+ p++, q++;
+ }
+ }
+ *new_env++ = string;
+ duplicate: ;
+ }
*new_env = 0;
}
-#endif /* Not MAINTAIN_ENVIRONMENT */
+#ifdef WINDOWSNT
+ prepare_standard_handles (in, out, err, handles);
+ set_process_dir (SDATA (current_dir));
+#else /* not WINDOWSNT */
+ /* Make sure that in, out, and err are not actually already in
+ descriptors zero, one, or two; this could happen if Emacs is
+ started with its standard in, out, or error closed, as might
+ happen under X. */
+ {
+ int oin = in, oout = out;
- close (0);
- close (1);
- close (2);
+ /* We have to avoid relocating the same descriptor twice! */
- dup2 (in, 0);
- dup2 (out, 1);
- dup2 (err, 2);
- close (in);
- close (out);
- close (err);
+ in = relocate_fd (in, 3);
- setpgrp_of_tty (pid);
+ if (out == oin)
+ out = in;
+ else
+ out = relocate_fd (out, 3);
-#ifdef vipc
- something missing here;
-#endif /* vipc */
+ if (err == oin)
+ err = in;
+ else if (err == oout)
+ err = out;
+ else
+ err = relocate_fd (err, 3);
+ }
+#ifndef MSDOS
+ emacs_close (0);
+ emacs_close (1);
+ emacs_close (2);
+
+ dup2 (in, 0);
+ dup2 (out, 1);
+ dup2 (err, 2);
+ emacs_close (in);
+ emacs_close (out);
+ emacs_close (err);
+#endif /* not MSDOS */
+#endif /* not WINDOWSNT */
+
+#if defined(USG) && !defined(BSD_PGRPS)
+#ifndef SETPGRP_RELEASES_CTTY
+ setpgrp (); /* No arguments but equivalent in this case */
+#endif
+#else
+ setpgrp (pid, pid);
+#endif /* USG */
+ /* setpgrp_of_tty is incorrect here; it uses input_fd. */
+ EMACS_SET_TTY_PGRP (0, &pid);
+
+#ifdef MSDOS
+ pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env);
+ xfree (pwd_var);
+ if (pid == -1)
+ /* An error occurred while trying to run the subprocess. */
+ report_file_error ("Spawning child process", Qnil);
+ return pid;
+#else /* not MSDOS */
+#ifdef WINDOWSNT
+ /* Spawn the child. (See ntproc.c:Spawnve). */
+ cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env);
+ reset_standard_handles (in, out, err, handles);
+ if (cpid == -1)
+ /* An error occurred while trying to spawn the process. */
+ report_file_error ("Spawning child process", Qnil);
+ return cpid;
+#else /* not WINDOWSNT */
/* execvp does not accept an environment arg so the only way
to pass this environment is to set environ. Our caller
is responsible for restoring the ambient value of environ. */
environ = env;
execvp (new_argv[0], new_argv);
- write (1, "Couldn't exec the program ", 26);
- write (1, new_argv[0], strlen (new_argv[0]));
+ emacs_write (1, "Can't exec program: ", 20);
+ emacs_write (1, new_argv[0], strlen (new_argv[0]));
+ emacs_write (1, "\n", 1);
_exit (1);
+#endif /* not WINDOWSNT */
+#endif /* not MSDOS */
+}
+
+/* Move the file descriptor FD so that its number is not less than MINFD.
+ If the file descriptor is moved at all, the original is freed. */
+static int
+relocate_fd (fd, minfd)
+ int fd, minfd;
+{
+ if (fd >= minfd)
+ return fd;
+ else
+ {
+ int new = dup (fd);
+ if (new == -1)
+ {
+ char *message1 = "Error while setting up child: ";
+ char *errmessage = strerror (errno);
+ char *message2 = "\n";
+ emacs_write (2, message1, strlen (message1));
+ emacs_write (2, errmessage, strlen (errmessage));
+ emacs_write (2, message2, strlen (message2));
+ _exit (1);
+ }
+ /* Note that we hold the original FD open while we recurse,
+ to guarantee we'll get a new FD if we need it. */
+ new = relocate_fd (new, minfd);
+ emacs_close (fd);
+ return new;
+ }
+}
+
+static int
+getenv_internal (var, varlen, value, valuelen)
+ char *var;
+ int varlen;
+ char **value;
+ int *valuelen;
+{
+ Lisp_Object scan;
+
+ for (scan = Vprocess_environment; CONSP (scan); scan = XCDR (scan))
+ {
+ Lisp_Object entry;
+
+ entry = XCAR (scan);
+ if (STRINGP (entry)
+ && SBYTES (entry) > varlen
+ && SREF (entry, varlen) == '='
+#ifdef WINDOWSNT
+ /* NT environment variables are case insensitive. */
+ && ! strnicmp (SDATA (entry), var, varlen)
+#else /* not WINDOWSNT */
+ && ! bcmp (SDATA (entry), var, varlen)
+#endif /* not WINDOWSNT */
+ )
+ {
+ *value = (char *) SDATA (entry) + (varlen + 1);
+ *valuelen = SBYTES (entry) - (varlen + 1);
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 1, 0,
+ doc: /* Return the value of environment variable VAR, as a string.
+VAR should be a string. Value is nil if VAR is undefined in the environment.
+This function consults the variable ``process-environment'' for its value. */)
+ (var)
+ Lisp_Object var;
+{
+ char *value;
+ int valuelen;
+
+ CHECK_STRING (var);
+ if (getenv_internal (SDATA (var), SBYTES (var),
+ &value, &valuelen))
+ return make_string (value, valuelen);
+ else
+ return Qnil;
+}
+
+/* A version of getenv that consults process_environment, easily
+ callable from C. */
+char *
+egetenv (var)
+ char *var;
+{
+ char *value;
+ int valuelen;
+
+ if (getenv_internal (var, strlen (var), &value, &valuelen))
+ return value;
+ else
+ return 0;
}
#endif /* not VMS */
\f
+/* This is run before init_cmdargs. */
+
+void
+init_callproc_1 ()
+{
+ char *data_dir = egetenv ("EMACSDATA");
+ char *doc_dir = egetenv ("EMACSDOC");
+
+ Vdata_directory
+ = Ffile_name_as_directory (build_string (data_dir ? data_dir
+ : PATH_DATA));
+ Vdoc_directory
+ = Ffile_name_as_directory (build_string (doc_dir ? doc_dir
+ : PATH_DOC));
+
+ /* Check the EMACSPATH environment variable, defaulting to the
+ PATH_EXEC path from epaths.h. */
+ Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC);
+ Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path));
+ Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path);
+}
+
+/* This is run after init_cmdargs, when Vinstallation_directory is valid. */
+
+void
init_callproc ()
{
+ char *data_dir = egetenv ("EMACSDATA");
+
register char * sh;
- register char **envp;
- Lisp_Object execdir;
+ Lisp_Object tempdir;
- /* Turn PATH_EXEC into a path. `==' is just a string which we know
- will not be the name of an environment variable. */
- Vexec_path = decode_env_path ("==", PATH_EXEC);
- Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path));
- Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path);
+ if (!NILP (Vinstallation_directory))
+ {
+ /* Add to the path the lib-src subdir of the installation dir. */
+ Lisp_Object tem;
+ tem = Fexpand_file_name (build_string ("lib-src"),
+ Vinstallation_directory);
+#ifndef DOS_NT
+ /* MSDOS uses wrapped binaries, so don't do this. */
+ if (NILP (Fmember (tem, Vexec_path)))
+ {
+ Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC);
+ Vexec_path = Fcons (tem, Vexec_path);
+ Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path);
+ }
+
+ Vexec_directory = Ffile_name_as_directory (tem);
+#endif /* not DOS_NT */
+
+ /* Maybe use ../etc as well as ../lib-src. */
+ if (data_dir == 0)
+ {
+ tem = Fexpand_file_name (build_string ("etc"),
+ Vinstallation_directory);
+ Vdoc_directory = Ffile_name_as_directory (tem);
+ }
+ }
+
+ /* Look for the files that should be in etc. We don't use
+ Vinstallation_directory, because these files are never installed
+ near the executable, and they are never in the build
+ directory when that's different from the source directory.
- execdir = Fdirectory_file_name (Vexec_directory);
- if (access (XSTRING (execdir)->data, 0) < 0)
+ Instead, if these files are not in the nominal place, we try the
+ source directory. */
+ if (data_dir == 0)
+ {
+ Lisp_Object tem, tem1, srcdir;
+
+ srcdir = Fexpand_file_name (build_string ("../src/"),
+ build_string (PATH_DUMPLOADSEARCH));
+ tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory);
+ tem1 = Ffile_exists_p (tem);
+ if (!NILP (Fequal (srcdir, Vinvocation_directory)) || NILP (tem1))
+ {
+ Lisp_Object newdir;
+ newdir = Fexpand_file_name (build_string ("../etc/"),
+ build_string (PATH_DUMPLOADSEARCH));
+ tem = Fexpand_file_name (build_string ("GNU"), newdir);
+ tem1 = Ffile_exists_p (tem);
+ if (!NILP (tem1))
+ Vdata_directory = newdir;
+ }
+ }
+
+#ifndef CANNOT_DUMP
+ if (initialized)
+#endif
{
- printf ("Warning: executable/documentation dir (%s) does not exist.\n",
- XSTRING (Vexec_directory)->data);
- sleep (2);
+ tempdir = Fdirectory_file_name (Vexec_directory);
+ if (access (SDATA (tempdir), 0) < 0)
+ dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n",
+ Vexec_directory);
}
+ tempdir = Fdirectory_file_name (Vdata_directory);
+ if (access (SDATA (tempdir), 0) < 0)
+ dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n",
+ Vdata_directory);
+
#ifdef VMS
Vshell_file_name = build_string ("*dcl*");
#else
- sh = (char *) egetenv ("SHELL");
+ sh = (char *) getenv ("SHELL");
Vshell_file_name = build_string (sh ? sh : "/bin/sh");
#endif
-#ifndef MAINTAIN_ENVIRONMENT
- /* The equivalent of this operation was done
- in init_environ in environ.c if MAINTAIN_ENVIRONMENT */
+#ifdef VMS
+ Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX.");
+#else
+ if (getenv ("TMPDIR"))
+ {
+ char *dir = getenv ("TMPDIR");
+ Vtemp_file_name_pattern
+ = Fexpand_file_name (build_string ("emacsXXXXXX"),
+ build_string (dir));
+ }
+ else
+ Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX");
+#endif
+
+#ifdef DOS_NT
+ Vshared_game_score_directory = Qnil;
+#else
+ Vshared_game_score_directory = build_string (PATH_GAME);
+ if (NILP (Ffile_directory_p (Vshared_game_score_directory)))
+ Vshared_game_score_directory = Qnil;
+#endif
+}
+
+void
+set_process_environment ()
+{
+ register char **envp;
+
Vprocess_environment = Qnil;
#ifndef CANNOT_DUMP
if (initialized)
for (envp = environ; *envp; envp++)
Vprocess_environment = Fcons (build_string (*envp),
Vprocess_environment);
-#endif /* MAINTAIN_ENVIRONMENT */
}
+void
syms_of_callproc ()
{
+#ifdef DOS_NT
+ Qbuffer_file_type = intern ("buffer-file-type");
+ staticpro (&Qbuffer_file_type);
+#endif /* DOS_NT */
+
DEFVAR_LISP ("shell-file-name", &Vshell_file_name,
- "*File name to load inferior shells from.\n\
-Initialized from the SHELL environment variable.");
+ doc: /* *File name to load inferior shells from.
+Initialized from the SHELL environment variable. */);
DEFVAR_LISP ("exec-path", &Vexec_path,
- "*List of directories to search programs to run in subprocesses.\n\
-Each element is a string (directory name) or nil (try default directory).");
+ doc: /* *List of directories to search programs to run in subprocesses.
+Each element is a string (directory name) or nil (try default directory). */);
+
+ DEFVAR_LISP ("exec-suffixes", &Vexec_suffixes,
+ doc: /* *List of suffixes to try to find executable file names.
+Each element is a string. */);
+ Vexec_suffixes = Qnil;
DEFVAR_LISP ("exec-directory", &Vexec_directory,
- "Directory that holds programs that come with GNU Emacs,\n\
-intended for Emacs to invoke.");
+ doc: /* Directory for executables for Emacs to invoke.
+More generally, this includes any architecture-dependent files
+that are built and installed from the Emacs distribution. */);
+
+ DEFVAR_LISP ("data-directory", &Vdata_directory,
+ doc: /* Directory of machine-independent files that come with GNU Emacs.
+These are files intended for Emacs to use while it runs. */);
+
+ DEFVAR_LISP ("doc-directory", &Vdoc_directory,
+ doc: /* Directory containing the DOC file that comes with GNU Emacs.
+This is usually the same as data-directory. */);
+
+ DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory,
+ doc: /* For internal use by the build procedure only.
+This is the name of the directory in which the build procedure installed
+Emacs's info files; the default value for Info-default-directory-list
+includes this. */);
+ Vconfigure_info_directory = build_string (PATH_INFO);
+
+ DEFVAR_LISP ("shared-game-score-directory", &Vshared_game_score_directory,
+ doc: /* Directory of score files for games which come with GNU Emacs.
+If this variable is nil, then Emacs is unable to use a shared directory. */);
+#ifdef DOS_NT
+ Vshared_game_score_directory = Qnil;
+#else
+ Vshared_game_score_directory = build_string (PATH_GAME);
+#endif
+
+ DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern,
+ doc: /* Pattern for making names for temporary files.
+This is used by `call-process-region'. */);
+ /* This variable is initialized in init_callproc. */
-#ifndef MAINTAIN_ENVIRONMENT
DEFVAR_LISP ("process-environment", &Vprocess_environment,
- "List of strings to append to environment of subprocesses that are started.\n\
-Each string should have the format ENVVARNAME=VALUE.");
-#endif
+ doc: /* List of environment variables for subprocesses to inherit.
+Each element should be a string of the form ENVVARNAME=VALUE.
+If multiple entries define the same variable, the first one always
+takes precedence.
+The environment which Emacs inherits is placed in this variable
+when Emacs starts. */);
#ifndef VMS
defsubr (&Scall_process);
+ defsubr (&Sgetenv_internal);
#endif
defsubr (&Scall_process_region);
}