X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/70949dac51f3e975477e6b1a38cc78625efc4a40..ecfb39ee8e14337d40328c8248c6d27793798025:/src/callproc.c diff --git a/src/callproc.c b/src/callproc.c index fec6c53733..103ece304b 100644 --- a/src/callproc.c +++ b/src/callproc.c @@ -1,5 +1,5 @@ /* Synchronous subprocess invocation for GNU Emacs. - Copyright (C) 1985, 86, 87, 88, 93, 94, 95 Free Software Foundation, Inc. + Copyright (C) 1985, 86,87,88,93,94,95, 1999 Free Software Foundation, Inc. This file is part of GNU Emacs. @@ -19,14 +19,12 @@ the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include #include #include - -#include #include extern int errno; -extern char *strerror (); /* Define SIGCHLD as an alias for SIGCLD. */ @@ -36,6 +34,10 @@ extern char *strerror (); #include +#ifdef HAVE_UNISTD_H +#include +#endif + #include #ifdef USG5 #define INCLUDED_FCNTL @@ -73,6 +75,7 @@ extern char *strerror (); #include "charset.h" #include "ccl.h" #include "coding.h" +#include "composite.h" #include #include "process.h" #include "syssignal.h" @@ -88,6 +91,13 @@ extern noshare char **environ; extern char **environ; #endif +#ifdef HAVE_SETPGID +#if !defined (USG) || defined (BSD_PGRPS) +#undef setpgrp +#define setpgrp setpgid +#endif +#endif + #define max(a, b) ((a) > (b) ? (a) : (b)) Lisp_Object Vexec_path, Vexec_directory, Vdata_directory, Vdoc_directory; @@ -130,7 +140,7 @@ static Lisp_Object call_process_kill (fdpid) Lisp_Object fdpid; { - close (XFASTINT (Fcar (fdpid))); + emacs_close (XFASTINT (Fcar (fdpid))); EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); synch_process_alive = 0; return Qnil; @@ -144,7 +154,7 @@ call_process_cleanup (fdpid) /* for MSDOS fdpid is really (fd . tempfile) */ register Lisp_Object file; file = Fcdr (fdpid); - close (XFASTINT (Fcar (fdpid))); + emacs_close (XFASTINT (Fcar (fdpid))); if (strcmp (XSTRING (file)-> data, NULL_DEVICE) != 0) unlink (XSTRING (file)->data); #else /* not MSDOS and not macintosh */ @@ -152,7 +162,7 @@ call_process_cleanup (fdpid) if (call_process_exited) { - close (XFASTINT (Fcar (fdpid))); + emacs_close (XFASTINT (Fcar (fdpid))); return Qnil; } @@ -169,7 +179,7 @@ call_process_cleanup (fdpid) message1 ("Waiting for process to die...done"); } synch_process_alive = 0; - close (XFASTINT (Fcar (fdpid))); + emacs_close (XFASTINT (Fcar (fdpid))); #endif /* not MSDOS */ return Qnil; } @@ -355,7 +365,7 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") display = nargs >= 4 ? args[3] : Qnil; - filefd = open (XSTRING (infile)->data, O_RDONLY, 0); + filefd = emacs_open (XSTRING (infile)->data, O_RDONLY, 0); if (filefd < 0) { report_file_error ("Opening process input file", Fcons (infile, Qnil)); @@ -370,47 +380,30 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") } if (NILP (path)) { - close (filefd); + emacs_close (filefd); report_file_error ("Searching for program", Fcons (args[0], Qnil)); } new_argv[0] = XSTRING (path)->data; if (nargs > 4) { register int i; + struct gcpro gcpro1, gcpro2, gcpro3; - if (! CODING_REQUIRE_ENCODING (&argument_coding)) - { - for (i = 4; i < nargs; i++) - new_argv[i - 3] = XSTRING (args[i])->data; - } - else + GCPRO3 (infile, buffer, current_dir); + argument_coding.dst_multibyte = 0; + for (i = 4; i < nargs; i++) { - /* We must encode the arguments. */ - struct gcpro gcpro1, gcpro2, gcpro3; - - GCPRO3 (infile, buffer, current_dir); - for (i = 4; i < nargs; i++) + argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]); + if (CODING_REQUIRE_ENCODING (&argument_coding)) { - int size = encoding_buffer_size (&argument_coding, - STRING_BYTES (XSTRING (args[i]))); - unsigned char *dummy1 = (unsigned char *) alloca (size); - int dummy; - - /* The Irix 4.0 compiler barfs if we eliminate dummy. */ - new_argv[i - 3] = dummy1; - argument_coding.mode |= CODING_MODE_LAST_BLOCK; - encode_coding (&argument_coding, - XSTRING (args[i])->data, - new_argv[i - 3], - STRING_BYTES (XSTRING (args[i])), - size); - new_argv[i - 3][argument_coding.produced] = 0; - /* We have to initialize CCL program status again. */ + /* 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); } - UNGCPRO; + new_argv[i - 3] = XSTRING (args[i])->data; } + UNGCPRO; new_argv[nargs - 3] = 0; } else @@ -433,7 +426,7 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") outfilefd = creat (tempfile, S_IREAD | S_IWRITE); if (outfilefd < 0) { - close (filefd); + emacs_close (filefd); report_file_error ("Opening process output file", Fcons (build_string (tempfile), Qnil)); } @@ -462,7 +455,7 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") #endif /* macintosh */ if (INTEGERP (buffer)) - fd[1] = open (NULL_DEVICE, O_WRONLY), fd[0] = -1; + fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; else { #ifndef MSDOS @@ -497,13 +490,13 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") synch_process_retcode = 0; if (NILP (error_file)) - fd_error = open (NULL_DEVICE, O_WRONLY); + fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); else if (STRINGP (error_file)) { #ifdef DOS_NT - fd_error = open (XSTRING (error_file)->data, - O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, - S_IREAD | S_IWRITE); + fd_error = emacs_open (XSTRING (error_file)->data, + O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, + S_IREAD | S_IWRITE); #else /* not DOS_NT */ fd_error = creat (XSTRING (error_file)->data, 0666); #endif /* not DOS_NT */ @@ -511,11 +504,11 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") if (fd_error < 0) { - close (filefd); + emacs_close (filefd); if (fd[0] != filefd) - close (fd[0]); + emacs_close (fd[0]); if (fd1 >= 0) - close (fd1); + emacs_close (fd1); #ifdef MSDOS unlink (tempfile); #endif @@ -557,7 +550,10 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") synch_process_alive = 0; synch_process_retcode = pid; if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ - synch_process_death = strerror (errno); + { + 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. */ @@ -582,19 +578,22 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") synch_process_alive = 0; synch_process_retcode = pid; if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ - synch_process_death = strerror (errno); + { + synchronize_system_messages_locale (); + synch_process_death = strerror (errno); + } - close (outfilefd); + emacs_close (outfilefd); if (fd_error != outfilefd) - close (fd_error); + 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] = open (tempfile, O_BINARY); + fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); if (fd[0] < 0) { unlink (tempfile); - close (filefd); + emacs_close (filefd); report_file_error ("Cannot re-open temporary file", Qnil); } #else /* not MSDOS */ @@ -607,7 +606,7 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") if (pid == 0) { if (fd[0] >= 0) - close (fd[0]); + emacs_close (fd[0]); #ifdef HAVE_SETSID setsid (); #endif @@ -623,7 +622,7 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") /* The MSDOS case did this already. */ if (fd_error >= 0) - close (fd_error); + emacs_close (fd_error); #endif /* not MSDOS */ #endif /* not macintosh */ @@ -631,22 +630,22 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") /* Close most of our fd's, but not fd[0] since we will use that to read input from. */ - close (filefd); + emacs_close (filefd); if (fd1 >= 0 && fd1 != fd_error) - close (fd1); + emacs_close (fd1); } if (pid < 0) { if (fd[0] >= 0) - close (fd[0]); + emacs_close (fd[0]); report_file_error ("Doing vfork", Qnil); } if (INTEGERP (buffer)) { if (fd[0] >= 0) - close (fd[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 @@ -712,6 +711,11 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") && !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; @@ -723,9 +727,12 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") 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 @@ -734,7 +741,8 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") nread = carryover; while (nread < bufsize - 1024) { - int this_read = read (fd[0], bufptr + nread, bufsize - nread); + int this_read = emacs_read (fd[0], bufptr + nread, + bufsize - nread); if (this_read < 0) goto give_up; @@ -757,13 +765,18 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") if (!NILP (buffer)) { - if (process_coding.type == coding_type_no_conversion) - insert (bufptr, nread); + 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 = decoding_buffer_size (&process_coding, nread); - char *decoding_buf = (char *) xmalloc (size); - + int size; + char *decoding_buf; + + repeat_decoding: + size = decoding_buffer_size (&process_coding, nread); + decoding_buf = (char *) xmalloc (size); + 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 @@ -781,27 +794,30 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") continue; } if (process_coding.produced > 0) - insert (decoding_buf, process_coding.produced); + insert_1_both (decoding_buf, process_coding.produced_char, + process_coding.produced, 0, 1, 0); xfree (decoding_buf); - carryover = nread - process_coding.consumed; + 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) { - /* As CARRYOVER should not be that large, we had - better avoid overhead of bcopy. */ - char *p = bufptr + process_coding.consumed; - char *pend = p + carryover; - char *dst = bufptr; - - while (p < pend) *dst++ = *p++; + /* 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) - { - if (carryover > 0) - insert (bufptr, carryover); - break; - } + break; /* Make the buffer bigger as we continue to read more data, but not past 64k. */ @@ -823,13 +839,27 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") } give_up: ; - Vlast_coding_system_used = process_coding.symbol; + if (!NILP (buffer) + && process_coding.cmp_data) + { + coding_restore_composition (&process_coding, Fcurrent_buffer ()); + coding_free_composition_data (&process_coding); + } + + 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)); + /* 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)); } /* Wait for it to terminate, unless it already has. */ @@ -846,7 +876,8 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") 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 @@ -858,6 +889,7 @@ delete_temp_file (name) /* 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, @@ -1049,7 +1081,14 @@ child_setup (in, out, err, new_argv, set_pgrp, current_dir) register int i; i = STRING_BYTES (XSTRING (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 (XSTRING (current_dir)->data, temp, i); @@ -1160,16 +1199,16 @@ child_setup (in, out, err, new_argv, set_pgrp, current_dir) } #ifndef MSDOS - close (0); - close (1); - close (2); + emacs_close (0); + emacs_close (1); + emacs_close (2); dup2 (in, 0); dup2 (out, 1); dup2 (err, 2); - close (in); - close (out); - close (err); + emacs_close (in); + emacs_close (out); + emacs_close (err); #endif /* not MSDOS */ #endif /* not WINDOWSNT */ @@ -1189,6 +1228,7 @@ child_setup (in, out, err, new_argv, set_pgrp, current_dir) #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); @@ -1209,9 +1249,9 @@ child_setup (in, out, err, new_argv, set_pgrp, current_dir) environ = env; execvp (new_argv[0], new_argv); - write (1, "Can't exec program: ", 20); - write (1, new_argv[0], strlen (new_argv[0])); - write (1, "\n", 1); + 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 */ @@ -1233,15 +1273,15 @@ relocate_fd (fd, minfd) char *message1 = "Error while setting up child: "; char *errmessage = strerror (errno); char *message2 = "\n"; - write (2, message1, strlen (message1)); - write (2, errmessage, strlen (errmessage)); - write (2, message2, strlen (message2)); + 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); - close (fd); + emacs_close (fd); return new; } } @@ -1280,7 +1320,7 @@ getenv_internal (var, varlen, value, valuelen) return 0; } -DEFUN ("getenv", Fgetenv, Sgetenv, 1, 1, 0, +DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 1, 0, "Return the value of environment variable VAR, as a string.\n\ VAR should be a string. Value is nil if VAR is undefined in the environment.\n\ This function consults the variable ``process-environment'' for its value.") @@ -1494,7 +1534,7 @@ when Emacs starts."); #ifndef VMS defsubr (&Scall_process); - defsubr (&Sgetenv); + defsubr (&Sgetenv_internal); #endif defsubr (&Scall_process_region); }