/* Interfaces to system-dependent kernel and library entries. Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 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 2, or (at your option) any later version. GNU Emacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Emacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H #include #endif #include #include #include #ifdef HAVE_UNISTD_H #include #endif #include "lisp.h" /* Including stdlib.h isn't necessarily enough to get srandom declared, e.g. without __USE_XOPEN_EXTENDED with glibc 2. */ #ifdef HAVE_RANDOM #if 0 /* It turns out that defining _OSF_SOURCE in osf5-0.h gets random prototyped as returning `int'. It looks to me as though the best way to DTRT is to prefer the rand48 functions (per libc.info). -- fx */ extern long int random P_ ((void)); #endif #if 0 /* Don't prototype srandom; it takes an unsigned argument on some systems, and an unsigned long on others, like FreeBSD 4.1. */ extern void srandom P_ ((unsigned int)); #endif #endif #include "blockinput.h" #ifdef MAC_OS8 #include #ifndef subprocesses /* Nonzero means delete a process right away if it exits (process.c). */ static int delete_exited_processes; #endif #endif /* MAC_OS8 */ #ifdef WINDOWSNT #define read sys_read #define write sys_write #include #ifndef NULL #define NULL 0 #endif #endif /* not WINDOWSNT */ /* Does anyone other than VMS need this? */ #ifndef fwrite #define sys_fwrite fwrite #else #undef fwrite #endif #include #include #include #ifdef HAVE_SETPGID #if !defined (USG) || defined (BSD_PGRPS) #undef setpgrp #define setpgrp setpgid #endif #endif /* Get SI_SRPC_DOMAIN, if it is available. */ #ifdef HAVE_SYS_SYSTEMINFO_H #include #endif #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ #include #include "dosfns.h" #include "msdos.h" #include #if __DJGPP__ > 1 extern int etext; extern unsigned start __asm__ ("start"); #endif #endif #ifndef USE_CRT_DLL #ifndef errno extern int errno; #endif #endif #ifdef VMS #include #include #include #include #include #include #include #include #include #include #ifdef __GNUC__ #include #else #include #endif #undef F_SETFL #ifndef RAB$C_BID #include #endif #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */ #endif /* VMS */ #ifndef VMS #include #endif /* not VMS */ #ifdef HAVE_FCNTL_H #include #endif #ifndef MSDOS #include #endif #include "systty.h" #include "syswait.h" #ifdef BROKEN_TIOCGWINSZ #undef TIOCGWINSZ #undef TIOCSWINSZ #endif #if defined (USG) || defined (DGUX) #include #ifndef MEMORY_IN_STRING_H #include #endif #if defined (TIOCGWINSZ) || defined (ISC4_0) #ifdef NEED_SIOCTL #include #endif #ifdef NEED_PTEM_H #include #include #endif #endif /* TIOCGWINSZ or ISC4_0 */ #endif /* USG or DGUX */ extern int quit_char; #include "keyboard.h" #include "frame.h" #include "window.h" #include "termhooks.h" #include "termchar.h" #include "termopts.h" #include "dispextern.h" #include "process.h" #ifdef WINDOWSNT #include /* In process.h which conflicts with the local copy. */ #define _P_WAIT 0 int _CRTAPI1 _spawnlp (int, const char *, const char *, ...); int _CRTAPI1 _getpid (void); extern char *getwd (char *); #endif #ifdef NONSYSTEM_DIR_LIBRARY #include "ndir.h" #endif /* NONSYSTEM_DIR_LIBRARY */ #include "syssignal.h" #include "systime.h" #ifdef HAVE_UTIME_H #include #endif #ifndef HAVE_UTIMES #ifndef HAVE_STRUCT_UTIMBUF /* We want to use utime rather than utimes, but we couldn't find the structure declaration. We'll use the traditional one. */ struct utimbuf { long actime; long modtime; }; #endif #endif /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ #ifndef LPASS8 #define LPASS8 0 #endif #ifdef BSD4_1 #define LNOFLSH 0100000 #endif static int baud_convert[] = #ifdef BAUD_CONVERT BAUD_CONVERT; #else { 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400 }; #endif #ifdef HAVE_SPEED_T #include #else #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T) #else #if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX) #include #endif #endif #endif int emacs_ospeed; /* The file descriptor for Emacs's input terminal. Under Unix, this is normally zero except when using X; under VMS, we place the input channel number here. */ int input_fd; void croak P_ ((char *)) NO_RETURN; #ifdef AIXHFT void hft_init (); void hft_reset (); #endif /* Temporary used by `sigblock' when defined in terms of signprocmask. */ SIGMASKTYPE sigprocmask_set; #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME) /* Return the current working directory. Returns NULL on errors. Any other returned value must be freed with free. This is used only when get_current_dir_name is not defined on the system. */ char* get_current_dir_name () { char *buf; char *pwd; struct stat dotstat, pwdstat; /* If PWD is accurate, use it instead of calling getwd. PWD is sometimes a nicer name, and using it may avoid a fatal error if a parent directory is searchable but not readable. */ if ((pwd = getenv ("PWD")) != 0 && (IS_DIRECTORY_SEP (*pwd) || (*pwd && IS_DEVICE_SEP (pwd[1]))) && stat (pwd, &pwdstat) == 0 && stat (".", &dotstat) == 0 && dotstat.st_ino == pwdstat.st_ino && dotstat.st_dev == pwdstat.st_dev #ifdef MAXPATHLEN && strlen (pwd) < MAXPATHLEN #endif ) { buf = (char *) malloc (strlen (pwd) + 1); if (!buf) return NULL; strcpy (buf, pwd); } #ifdef HAVE_GETCWD else { size_t buf_size = 1024; buf = (char *) malloc (buf_size); if (!buf) return NULL; for (;;) { if (getcwd (buf, buf_size) == buf) break; if (errno != ERANGE) { int tmp_errno = errno; free (buf); errno = tmp_errno; return NULL; } buf_size *= 2; buf = (char *) realloc (buf, buf_size); if (!buf) return NULL; } } #else else { /* We need MAXPATHLEN here. */ buf = (char *) malloc (MAXPATHLEN + 1); if (!buf) return NULL; if (getwd (buf) == NULL) { int tmp_errno = errno; free (buf); errno = tmp_errno; return NULL; } } #endif return buf; } #endif /* Specify a different file descriptor for further input operations. */ void change_input_fd (fd) int fd; { input_fd = fd; } /* Discard pending input on descriptor input_fd. */ void discard_tty_input () { #ifndef WINDOWSNT struct emacs_tty buf; if (noninteractive) return; /* Discarding input is not safe when the input could contain replies from the X server. So don't do it. */ if (read_socket_hook) return; #ifdef VMS end_kbd_input (); SYS$QIOW (0, input_fd, IO$_READVBLK|IO$M_PURGE, input_iosb, 0, 0, &buf.main, 0, 0, terminator_mask, 0, 0); queue_kbd_input (); #else /* not VMS */ #ifdef APOLLO { int zero = 0; ioctl (input_fd, TIOCFLUSH, &zero); } #else /* not Apollo */ #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ while (dos_keyread () != -1) ; #else /* not MSDOS */ EMACS_GET_TTY (input_fd, &buf); EMACS_SET_TTY (input_fd, &buf, 0); #endif /* not MSDOS */ #endif /* not Apollo */ #endif /* not VMS */ #endif /* not WINDOWSNT */ } #ifdef SIGTSTP /* Arrange for character C to be read as the next input from the terminal. */ void #ifdef PROTOTYPES stuff_char (char c) #else stuff_char (c) char c; #endif { if (read_socket_hook) return; /* Should perhaps error if in batch mode */ #ifdef TIOCSTI ioctl (input_fd, TIOCSTI, &c); #else /* no TIOCSTI */ error ("Cannot stuff terminal input characters in this version of Unix"); #endif /* no TIOCSTI */ } #endif /* SIGTSTP */ void init_baud_rate () { if (noninteractive) emacs_ospeed = 0; else { #ifdef INIT_BAUD_RATE INIT_BAUD_RATE (); #else #ifdef DOS_NT emacs_ospeed = 15; #else /* not DOS_NT */ #ifdef VMS struct sensemode sg; SYS$QIOW (0, input_fd, IO$_SENSEMODE, &sg, 0, 0, &sg.class, 12, 0, 0, 0, 0 ); emacs_ospeed = sg.xmit_baud; #else /* not VMS */ #ifdef HAVE_TERMIOS struct termios sg; sg.c_cflag = B9600; tcgetattr (input_fd, &sg); emacs_ospeed = cfgetospeed (&sg); #if defined (USE_GETOBAUD) && defined (getobaud) /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */ if (emacs_ospeed == 0) emacs_ospeed = getobaud (sg.c_cflag); #endif #else /* neither VMS nor TERMIOS */ #ifdef HAVE_TERMIO struct termio sg; sg.c_cflag = B9600; #ifdef HAVE_TCATTR tcgetattr (input_fd, &sg); #else ioctl (input_fd, TCGETA, &sg); #endif emacs_ospeed = sg.c_cflag & CBAUD; #else /* neither VMS nor TERMIOS nor TERMIO */ struct sgttyb sg; sg.sg_ospeed = B9600; if (ioctl (input_fd, TIOCGETP, &sg) < 0) abort (); emacs_ospeed = sg.sg_ospeed; #endif /* not HAVE_TERMIO */ #endif /* not HAVE_TERMIOS */ #endif /* not VMS */ #endif /* not DOS_NT */ #endif /* not INIT_BAUD_RATE */ } baud_rate = (emacs_ospeed < sizeof baud_convert / sizeof baud_convert[0] ? baud_convert[emacs_ospeed] : 9600); if (baud_rate == 0) baud_rate = 1200; } /*ARGSUSED*/ void set_exclusive_use (fd) int fd; { #ifdef FIOCLEX ioctl (fd, FIOCLEX, 0); #endif /* Ok to do nothing if this feature does not exist */ } #ifndef subprocesses wait_without_blocking () { #ifdef BSD_SYSTEM wait3 (0, WNOHANG | WUNTRACED, 0); #else croak ("wait_without_blocking"); #endif synch_process_alive = 0; } #endif /* not subprocesses */ int wait_debugging; /* Set nonzero to make following function work under dbx (at least for bsd). */ SIGTYPE wait_for_termination_signal () {} /* Wait for subprocess with process id `pid' to terminate and make sure it will get eliminated (not remain forever as a zombie) */ void wait_for_termination (pid) int pid; { while (1) { #ifdef subprocesses #ifdef VMS int status; status = SYS$FORCEX (&pid, 0, 0); break; #else /* not VMS */ #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5)) /* Note that kill returns -1 even if the process is just a zombie now. But inevitably a SIGCHLD interrupt should be generated and child_sig will do wait3 and make the process go away. */ /* There is some indication that there is a bug involved with termination of subprocesses, perhaps involving a kernel bug too, but no idea what it is. Just as a hunch we signal SIGCHLD to see if that causes the problem to go away or get worse. */ sigsetmask (sigmask (SIGCHLD)); if (0 > kill (pid, 0)) { sigsetmask (SIGEMPTYMASK); kill (getpid (), SIGCHLD); break; } if (wait_debugging) sleep (1); else sigpause (SIGEMPTYMASK); #else /* not BSD_SYSTEM, and not HPUX version >= 6 */ #if defined (UNIPLUS) if (0 > kill (pid, 0)) break; wait (0); #else /* neither BSD_SYSTEM nor UNIPLUS: random sysV */ #ifdef POSIX_SIGNALS /* would this work for GNU/Linux as well? */ sigblock (sigmask (SIGCHLD)); errno = 0; if (kill (pid, 0) == -1 && errno == ESRCH) { sigunblock (sigmask (SIGCHLD)); break; } sigsuspend (&empty_mask); #else /* not POSIX_SIGNALS */ #ifdef HAVE_SYSV_SIGPAUSE sighold (SIGCHLD); if (0 > kill (pid, 0)) { sigrelse (SIGCHLD); break; } sigpause (SIGCHLD); #else /* not HAVE_SYSV_SIGPAUSE */ #ifdef WINDOWSNT wait (0); break; #else /* not WINDOWSNT */ if (0 > kill (pid, 0)) break; /* Using sleep instead of pause avoids timing error. If the inferior dies just before the sleep, we lose just one second. */ sleep (1); #endif /* not WINDOWSNT */ #endif /* not HAVE_SYSV_SIGPAUSE */ #endif /* not POSIX_SIGNALS */ #endif /* not UNIPLUS */ #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */ #endif /* not VMS */ #else /* not subprocesses */ #if __DJGPP__ > 1 break; #else /* not __DJGPP__ > 1 */ #ifndef BSD4_1 if (kill (pid, 0) < 0) break; wait (0); #else /* BSD4_1 */ int status; status = wait (0); if (status == pid || status == -1) break; #endif /* BSD4_1 */ #endif /* not __DJGPP__ > 1*/ #endif /* not subprocesses */ } } #ifdef subprocesses /* * flush any pending output * (may flush input as well; it does not matter the way we use it) */ void flush_pending_output (channel) int channel; { #ifdef HAVE_TERMIOS /* If we try this, we get hit with SIGTTIN, because the child's tty belongs to the child's pgrp. */ #else #ifdef TCFLSH ioctl (channel, TCFLSH, 1); #else #ifdef TIOCFLUSH int zero = 0; /* 3rd arg should be ignored but some 4.2 kernels actually want the address of an int and nonzero means something different. */ ioctl (channel, TIOCFLUSH, &zero); #endif #endif #endif } #ifndef VMS /* Set up the terminal at the other end of a pseudo-terminal that we will be controlling an inferior through. It should not echo or do line-editing, since that is done in Emacs. No padding needed for insertion into an Emacs buffer. */ void child_setup_tty (out) int out; { #ifndef DOS_NT struct emacs_tty s; EMACS_GET_TTY (out, &s); #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) s.main.c_oflag |= OPOST; /* Enable output postprocessing */ s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ #ifdef NLDLY s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); /* No output delays */ #endif s.main.c_lflag &= ~ECHO; /* Disable echo */ s.main.c_lflag |= ISIG; /* Enable signals */ #if 0 /* This causes bugs in (for instance) telnet to certain sites. */ s.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ #ifdef INLCR /* Just being cautious, since I can't check how widespread INLCR is--rms. */ s.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ #endif #endif #ifdef IUCLC s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ #endif #ifdef ISTRIP s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ #endif #ifdef OLCUC s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ #endif s.main.c_oflag &= ~TAB3; /* Disable tab expansion */ s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ #if 0 /* Said to be unnecessary: */ s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */ s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */ #endif s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */ s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */ s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */ #ifdef HPUX s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ #endif /* HPUX */ #ifdef SIGNALS_VIA_CHARACTERS /* the QUIT and INTR character are used in process_send_signal so set them here to something useful. */ if (s.main.c_cc[VQUIT] == CDISABLE) s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ if (s.main.c_cc[VINTR] == CDISABLE) s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ #endif /* not SIGNALS_VIA_CHARACTERS */ #ifdef AIX /* AIX enhanced edit loses NULs, so disable it */ #ifndef IBMR2AIX s.main.c_line = 0; s.main.c_iflag &= ~ASCEDIT; #endif /* Also, PTY overloads NUL and BREAK. don't ignore break, but don't signal either, so it looks like NUL. */ s.main.c_iflag &= ~IGNBRK; s.main.c_iflag &= ~BRKINT; /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional would force it to 0377. That looks like duplicated code. */ #ifndef SIGNALS_VIA_CHARACTERS /* QUIT and INTR work better as signals, so disable character forms */ s.main.c_cc[VQUIT] = CDISABLE; s.main.c_cc[VINTR] = CDISABLE; s.main.c_lflag &= ~ISIG; #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ s.main.c_cc[VEOL] = CDISABLE; s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ #endif /* AIX */ #else /* not HAVE_TERMIO */ s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | CBREAK | TANDEM); s.main.sg_flags |= LPASS8; s.main.sg_erase = 0377; s.main.sg_kill = 0377; s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ #endif /* not HAVE_TERMIO */ EMACS_SET_TTY (out, &s, 0); #ifdef BSD4_1 if (interrupt_input) reset_sigio (); #endif /* BSD4_1 */ #ifdef RTU { int zero = 0; ioctl (out, FIOASYNC, &zero); } #endif /* RTU */ #endif /* not DOS_NT */ } #endif /* not VMS */ #endif /* subprocesses */ /* Record a signal code and the handler for it. */ struct save_signal { int code; SIGTYPE (*handler) P_ ((int)); }; static void save_signal_handlers P_ ((struct save_signal *)); static void restore_signal_handlers P_ ((struct save_signal *)); /* Suspend the Emacs process; give terminal to its superior. */ void sys_suspend () { #ifdef VMS /* "Foster" parentage allows emacs to return to a subprocess that attached to the current emacs as a cheaper than starting a whole new process. This is set up by KEPTEDITOR.COM. */ unsigned long parent_id, foster_parent_id; char *fpid_string; fpid_string = getenv ("EMACS_PARENT_PID"); if (fpid_string != NULL) { sscanf (fpid_string, "%x", &foster_parent_id); if (foster_parent_id != 0) parent_id = foster_parent_id; else parent_id = getppid (); } else parent_id = getppid (); xfree (fpid_string); /* On VMS, this was malloc'd */ if (parent_id && parent_id != 0xffffffff) { SIGTYPE (*oldsig)() = (int) signal (SIGINT, SIG_IGN); int status = LIB$ATTACH (&parent_id) & 1; signal (SIGINT, oldsig); return status; } else { struct { int l; char *a; } d_prompt; d_prompt.l = sizeof ("Emacs: "); /* Our special prompt */ d_prompt.a = "Emacs: "; /* Just a reminder */ LIB$SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt, 0); return 1; } return -1; #else #if defined (SIGTSTP) && !defined (MSDOS) { int pgrp = EMACS_GETPGRP (0); EMACS_KILLPG (pgrp, SIGTSTP); } #else /* No SIGTSTP */ #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */ ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ kill (getpid (), SIGQUIT); #else /* No SIGTSTP or USG_JOBCTRL */ /* On a system where suspending is not implemented, instead fork a subshell and let it talk directly to the terminal while we wait. */ sys_subshell (); #endif /* no USG_JOBCTRL */ #endif /* no SIGTSTP */ #endif /* not VMS */ } /* Fork a subshell. */ #ifndef MAC_OS8 void sys_subshell () { #ifndef VMS #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */ int st; char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ #endif int pid; struct save_signal saved_handlers[5]; Lisp_Object dir; unsigned char *str = 0; int len; saved_handlers[0].code = SIGINT; saved_handlers[1].code = SIGQUIT; saved_handlers[2].code = SIGTERM; #ifdef SIGIO saved_handlers[3].code = SIGIO; saved_handlers[4].code = 0; #else saved_handlers[3].code = 0; #endif /* Mentioning current_buffer->buffer would mean including buffer.h, which somehow wedges the hp compiler. So instead... */ dir = intern ("default-directory"); if (NILP (Fboundp (dir))) goto xyzzy; dir = Fsymbol_value (dir); if (!STRINGP (dir)) goto xyzzy; dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil); str = (unsigned char *) alloca (SCHARS (dir) + 2); len = SCHARS (dir); bcopy (SDATA (dir), str, len); if (str[len - 1] != '/') str[len++] = '/'; str[len] = 0; xyzzy: #ifdef DOS_NT pid = 0; #if __DJGPP__ > 1 save_signal_handlers (saved_handlers); synch_process_alive = 1; #endif /* __DJGPP__ > 1 */ #else pid = vfork (); if (pid == -1) error ("Can't spawn subshell"); #endif if (pid == 0) { char *sh = 0; #ifdef DOS_NT /* MW, Aug 1993 */ getwd (oldwd); if (sh == 0) sh = (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */ #endif if (sh == 0) sh = (char *) egetenv ("SHELL"); if (sh == 0) sh = "sh"; /* Use our buffer's default directory for the subshell. */ if (str) chdir ((char *) str); #ifdef subprocesses close_process_descs (); /* Close Emacs's pipes/ptys */ #endif #ifdef SET_EMACS_PRIORITY { extern EMACS_INT emacs_priority; if (emacs_priority < 0) nice (-emacs_priority); } #endif #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ { char *epwd = getenv ("PWD"); char old_pwd[MAXPATHLEN+1+4]; /* If PWD is set, pass it with corrected value. */ if (epwd) { strcpy (old_pwd, epwd); if (str[len - 1] == '/') str[len - 1] = '\0'; setenv ("PWD", str, 1); } st = system (sh); chdir (oldwd); if (epwd) putenv (old_pwd); /* restore previous value */ } #if 0 /* This is also reported if last command executed in subshell failed, KFS */ if (st) report_file_error ("Can't execute subshell", Fcons (build_string (sh), Qnil)); #endif #else /* not MSDOS */ #ifdef WINDOWSNT /* Waits for process completion */ pid = _spawnlp (_P_WAIT, sh, sh, NULL); chdir (oldwd); if (pid == -1) write (1, "Can't execute subshell", 22); #else /* not WINDOWSNT */ execlp (sh, sh, (char *) 0); write (1, "Can't execute subshell", 22); _exit (1); #endif /* not WINDOWSNT */ #endif /* not MSDOS */ } /* Do this now if we did not do it before. */ #if !defined (MSDOS) || __DJGPP__ == 1 save_signal_handlers (saved_handlers); synch_process_alive = 1; #endif #ifndef DOS_NT wait_for_termination (pid); #endif restore_signal_handlers (saved_handlers); synch_process_alive = 0; #endif /* !VMS */ } #endif /* !MAC_OS8 */ static void save_signal_handlers (saved_handlers) struct save_signal *saved_handlers; { while (saved_handlers->code) { saved_handlers->handler = (SIGTYPE (*) P_ ((int))) signal (saved_handlers->code, SIG_IGN); saved_handlers++; } } static void restore_signal_handlers (saved_handlers) struct save_signal *saved_handlers; { while (saved_handlers->code) { signal (saved_handlers->code, saved_handlers->handler); saved_handlers++; } } #ifdef F_SETFL int old_fcntl_flags; void init_sigio (fd) int fd; { #ifdef FASYNC old_fcntl_flags = fcntl (fd, F_GETFL, 0) & ~FASYNC; fcntl (fd, F_SETFL, old_fcntl_flags | FASYNC); #endif interrupts_deferred = 0; } void reset_sigio () { unrequest_sigio (); } #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ void request_sigio () { if (noninteractive || read_socket_hook) return; #ifdef SIGWINCH sigunblock (sigmask (SIGWINCH)); #endif fcntl (input_fd, F_SETFL, old_fcntl_flags | FASYNC); interrupts_deferred = 0; } void unrequest_sigio () { if (noninteractive || read_socket_hook) return; #ifdef SIGWINCH sigblock (sigmask (SIGWINCH)); #endif fcntl (input_fd, F_SETFL, old_fcntl_flags); interrupts_deferred = 1; } #else /* no FASYNC */ #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */ void request_sigio () { int on = 1; if (noninteractive || read_socket_hook) return; ioctl (input_fd, FIOASYNC, &on); interrupts_deferred = 0; } void unrequest_sigio () { int off = 0; if (noninteractive || read_socket_hook) return; ioctl (input_fd, FIOASYNC, &off); interrupts_deferred = 1; } #else /* not FASYNC, not STRIDE */ #ifdef _CX_UX #include void request_sigio () { int on = 1; sigset_t st; if (noninteractive || read_socket_hook) return; sigemptyset (&st); sigaddset (&st, SIGIO); ioctl (input_fd, FIOASYNC, &on); interrupts_deferred = 0; sigprocmask (SIG_UNBLOCK, &st, (sigset_t *)0); } void unrequest_sigio () { int off = 0; if (noninteractive || read_socket_hook) return; ioctl (input_fd, FIOASYNC, &off); interrupts_deferred = 1; } #else /* ! _CX_UX */ #ifndef MSDOS void request_sigio () { if (noninteractive || read_socket_hook) return; croak ("request_sigio"); } void unrequest_sigio () { if (noninteractive || read_socket_hook) return; croak ("unrequest_sigio"); } #endif /* MSDOS */ #endif /* _CX_UX */ #endif /* STRIDE */ #endif /* FASYNC */ #endif /* F_SETFL */ /* Saving and restoring the process group of Emacs's terminal. */ #ifdef BSD_PGRPS /* The process group of which Emacs was a member when it initially started. If Emacs was in its own process group (i.e. inherited_pgroup == getpid ()), then we know we're running under a shell with job control (Emacs would never be run as part of a pipeline). Everything is fine. If Emacs was not in its own process group, then we know we're running under a shell (or a caller) that doesn't know how to separate itself from Emacs (like sh). Emacs must be in its own process group in order to receive SIGIO correctly. In this situation, we put ourselves in our own pgroup, forcibly set the tty's pgroup to our pgroup, and make sure to restore and reinstate the tty's pgroup just like any other terminal setting. If inherited_group was not the tty's pgroup, then we'll get a SIGTTmumble when we try to change the tty's pgroup, and a CONT if it goes foreground in the future, which is what should happen. */ int inherited_pgroup; /* Split off the foreground process group to Emacs alone. When we are in the foreground, but not started in our own process group, redirect the TTY to point to our own process group. We need to be in our own process group to receive SIGIO properly. */ void narrow_foreground_group () { int me = getpid (); setpgrp (0, inherited_pgroup); if (inherited_pgroup != me) EMACS_SET_TTY_PGRP (input_fd, &me); setpgrp (0, me); } /* Set the tty to our original foreground group. */ void widen_foreground_group () { if (inherited_pgroup != getpid ()) EMACS_SET_TTY_PGRP (input_fd, &inherited_pgroup); setpgrp (0, inherited_pgroup); } #endif /* BSD_PGRPS */ /* Getting and setting emacs_tty structures. */ /* Set *TC to the parameters associated with the terminal FD. Return zero if all's well, or -1 if we ran into an error we couldn't deal with. */ int emacs_get_tty (fd, settings) int fd; struct emacs_tty *settings; { /* Retrieve the primary parameters - baud rate, character size, etcetera. */ #ifdef HAVE_TCATTR /* We have those nifty POSIX tcmumbleattr functions. */ bzero (&settings->main, sizeof (settings->main)); if (tcgetattr (fd, &settings->main) < 0) return -1; #else #ifdef HAVE_TERMIO /* The SYSV-style interface? */ if (ioctl (fd, TCGETA, &settings->main) < 0) return -1; #else #ifdef VMS /* Vehemently Monstrous System? :-) */ if (! (SYS$QIOW (0, fd, IO$_SENSEMODE, settings, 0, 0, &settings->main.class, 12, 0, 0, 0, 0) & 1)) return -1; #else #ifndef DOS_NT /* I give up - I hope you have the BSD ioctls. */ if (ioctl (fd, TIOCGETP, &settings->main) < 0) return -1; #endif /* not DOS_NT */ #endif #endif #endif /* Suivant - Do we have to get struct ltchars data? */ #ifdef HAVE_LTCHARS if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) return -1; #endif /* How about a struct tchars and a wordful of lmode bits? */ #ifdef HAVE_TCHARS if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 || ioctl (fd, TIOCLGET, &settings->lmode) < 0) return -1; #endif /* We have survived the tempest. */ return 0; } /* Set the parameters of the tty on FD according to the contents of *SETTINGS. If FLUSHP is non-zero, we discard input. Return 0 if all went well, and -1 if anything failed. */ int emacs_set_tty (fd, settings, flushp) int fd; struct emacs_tty *settings; int flushp; { /* Set the primary parameters - baud rate, character size, etcetera. */ #ifdef HAVE_TCATTR int i; /* We have those nifty POSIX tcmumbleattr functions. William J. Smith writes: "POSIX 1003.1 defines tcsetattr to return success if it was able to perform any of the requested actions, even if some of the requested actions could not be performed. We must read settings back to ensure tty setup properly. AIX requires this to keep tty from hanging occasionally." */ /* This make sure that we don't loop indefinitely in here. */ for (i = 0 ; i < 10 ; i++) if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) { if (errno == EINTR) continue; else return -1; } else { struct termios new; bzero (&new, sizeof (new)); /* Get the current settings, and see if they're what we asked for. */ tcgetattr (fd, &new); /* We cannot use memcmp on the whole structure here because under * aix386 the termios structure has some reserved field that may * not be filled in. */ if ( new.c_iflag == settings->main.c_iflag && new.c_oflag == settings->main.c_oflag && new.c_cflag == settings->main.c_cflag && new.c_lflag == settings->main.c_lflag && memcmp (new.c_cc, settings->main.c_cc, NCCS) == 0) break; else continue; } #else #ifdef HAVE_TERMIO /* The SYSV-style interface? */ if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0) return -1; #else #ifdef VMS /* Vehemently Monstrous System? :-) */ if (! (SYS$QIOW (0, fd, IO$_SETMODE, &input_iosb, 0, 0, &settings->main.class, 12, 0, 0, 0, 0) & 1)) return -1; #else #ifndef DOS_NT /* I give up - I hope you have the BSD ioctls. */ if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) return -1; #endif /* not DOS_NT */ #endif #endif #endif /* Suivant - Do we have to get struct ltchars data? */ #ifdef HAVE_LTCHARS if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) return -1; #endif /* How about a struct tchars and a wordful of lmode bits? */ #ifdef HAVE_TCHARS if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 || ioctl (fd, TIOCLSET, &settings->lmode) < 0) return -1; #endif /* We have survived the tempest. */ return 0; } /* The initial tty mode bits */ struct emacs_tty old_tty; /* 1 if we have been through init_sys_modes. */ int term_initted; /* 1 if outer tty status has been recorded. */ int old_tty_valid; #ifdef BSD4_1 /* BSD 4.1 needs to keep track of the lmode bits in order to start sigio. */ int lmode; #endif #ifndef F_SETOWN_BUG #ifdef F_SETOWN int old_fcntl_owner; #endif /* F_SETOWN */ #endif /* F_SETOWN_BUG */ /* This may also be defined in stdio, but if so, this does no harm, and using the same name avoids wasting the other one's space. */ #ifdef nec_ews_svr4 extern char *_sobuf ; #else #if defined (USG) || defined (DGUX) unsigned char _sobuf[BUFSIZ+8]; #else char _sobuf[BUFSIZ]; #endif #endif #ifdef HAVE_LTCHARS static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; #endif #ifdef HAVE_TCHARS static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; #endif void init_sys_modes () { struct emacs_tty tty; #ifdef VMS #if 0 static int oob_chars[2] = {0, 1 << 7}; /* catch C-g's */ extern int (*interrupt_signal) (); #endif #endif Vtty_erase_char = Qnil; if (noninteractive) return; #ifdef VMS if (!input_ef) input_ef = get_kbd_event_flag (); /* LIB$GET_EF (&input_ef); */ SYS$CLREF (input_ef); waiting_for_ast = 0; if (!timer_ef) timer_ef = get_timer_event_flag (); /* LIB$GET_EF (&timer_ef); */ SYS$CLREF (timer_ef); #if 0 if (!process_ef) { LIB$GET_EF (&process_ef); SYS$CLREF (process_ef); } if (input_ef / 32 != process_ef / 32) croak ("Input and process event flags in different clusters."); #endif if (input_ef / 32 != timer_ef / 32) croak ("Input and timer event flags in different clusters."); #if 0 input_eflist = ((unsigned) 1 << (input_ef % 32)) | ((unsigned) 1 << (process_ef % 32)); #endif timer_eflist = ((unsigned) 1 << (input_ef % 32)) | ((unsigned) 1 << (timer_ef % 32)); #ifndef VMS4_4 sys_access_reinit (); #endif #endif /* not VMS */ #ifdef BSD_PGRPS if (! read_socket_hook && EQ (Vwindow_system, Qnil)) narrow_foreground_group (); #endif #ifdef HAVE_WINDOW_SYSTEM /* Emacs' window system on MSDOG uses the `internal terminal' and therefore needs the initialization code below. */ if (!read_socket_hook && EQ (Vwindow_system, Qnil)) #endif { EMACS_GET_TTY (input_fd, &old_tty); old_tty_valid = 1; tty = old_tty; #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) XSETINT (Vtty_erase_char, old_tty.main.c_cc[VERASE]); #ifdef DGUX /* This allows meta to be sent on 8th bit. */ tty.main.c_iflag &= ~INPCK; /* don't check input for parity */ #endif tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ #ifdef INLCR /* I'm just being cautious, since I can't check how widespread INLCR is--rms. */ tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ #endif #ifdef ISTRIP tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ #endif tty.main.c_lflag &= ~ECHO; /* Disable echo */ tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ #ifdef IEXTEN tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ #endif tty.main.c_lflag |= ISIG; /* Enable signals */ if (flow_control) { tty.main.c_iflag |= IXON; /* Enable start/stop output control */ #ifdef IXANY tty.main.c_iflag &= ~IXANY; #endif /* IXANY */ } else tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ #ifdef CS8 if (meta_key) { tty.main.c_cflag |= CS8; /* allow 8th bit on input */ tty.main.c_cflag &= ~PARENB;/* Don't check parity */ } #endif tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ /* Set up C-g for both SIGQUIT and SIGINT. We don't know which we will get, but we handle both alike so which one it really gives us does not matter. */ tty.main.c_cc[VQUIT] = quit_char; tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ #ifdef VSWTCH tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use of C-z */ #endif /* VSWTCH */ #if defined (mips) || defined (HAVE_TCATTR) #ifdef VSUSP tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */ #endif /* VSUSP */ #ifdef V_DSUSP tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */ #endif /* V_DSUSP */ #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ tty.main.c_cc[VDSUSP] = CDISABLE; #endif /* VDSUSP */ #ifdef VLNEXT tty.main.c_cc[VLNEXT] = CDISABLE; #endif /* VLNEXT */ #ifdef VREPRINT tty.main.c_cc[VREPRINT] = CDISABLE; #endif /* VREPRINT */ #ifdef VWERASE tty.main.c_cc[VWERASE] = CDISABLE; #endif /* VWERASE */ #ifdef VDISCARD tty.main.c_cc[VDISCARD] = CDISABLE; #endif /* VDISCARD */ if (flow_control) { #ifdef VSTART tty.main.c_cc[VSTART] = '\021'; #endif /* VSTART */ #ifdef VSTOP tty.main.c_cc[VSTOP] = '\023'; #endif /* VSTOP */ } else { #ifdef VSTART tty.main.c_cc[VSTART] = CDISABLE; #endif /* VSTART */ #ifdef VSTOP tty.main.c_cc[VSTOP] = CDISABLE; #endif /* VSTOP */ } #endif /* mips or HAVE_TCATTR */ #ifdef SET_LINE_DISCIPLINE /* Need to explicitly request TERMIODISC line discipline or Ultrix's termios does not work correctly. */ tty.main.c_line = SET_LINE_DISCIPLINE; #endif #ifdef AIX #ifndef IBMR2AIX /* AIX enhanced edit loses NULs, so disable it. */ tty.main.c_line = 0; tty.main.c_iflag &= ~ASCEDIT; #else tty.main.c_cc[VSTRT] = CDISABLE; tty.main.c_cc[VSTOP] = CDISABLE; tty.main.c_cc[VSUSP] = CDISABLE; tty.main.c_cc[VDSUSP] = CDISABLE; #endif /* IBMR2AIX */ if (flow_control) { #ifdef VSTART tty.main.c_cc[VSTART] = '\021'; #endif /* VSTART */ #ifdef VSTOP tty.main.c_cc[VSTOP] = '\023'; #endif /* VSTOP */ } /* Also, PTY overloads NUL and BREAK. don't ignore break, but don't signal either, so it looks like NUL. This really serves a purpose only if running in an XTERM window or via TELNET or the like, but does no harm elsewhere. */ tty.main.c_iflag &= ~IGNBRK; tty.main.c_iflag &= ~BRKINT; #endif #else /* if not HAVE_TERMIO */ #ifdef VMS tty.main.tt_char |= TT$M_NOECHO; if (meta_key) tty.main.tt_char |= TT$M_EIGHTBIT; if (flow_control) tty.main.tt_char |= TT$M_TTSYNC; else tty.main.tt_char &= ~TT$M_TTSYNC; tty.main.tt2_char |= TT2$M_PASTHRU | TT2$M_XON; #else /* not VMS (BSD, that is) */ #ifndef DOS_NT XSETINT (Vtty_erase_char, tty.main.sg_erase); tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); if (meta_key) tty.main.sg_flags |= ANYP; tty.main.sg_flags |= interrupt_input ? RAW : CBREAK; #endif /* not DOS_NT */ #endif /* not VMS (BSD, that is) */ #endif /* not HAVE_TERMIO */ /* If going to use CBREAK mode, we must request C-g to interrupt and turn off start and stop chars, etc. If not going to use CBREAK mode, do this anyway so as to turn off local flow control for user coming over network on 4.2; in this case, only t_stopc and t_startc really matter. */ #ifndef HAVE_TERMIO #ifdef HAVE_TCHARS /* Note: if not using CBREAK mode, it makes no difference how we set this */ tty.tchars = new_tchars; tty.tchars.t_intrc = quit_char; if (flow_control) { tty.tchars.t_startc = '\021'; tty.tchars.t_stopc = '\023'; } tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | old_tty.lmode; #ifdef ultrix /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt anything, and leaving it in breaks the meta key. Go figure. */ tty.lmode &= ~LLITOUT; #endif #ifdef BSD4_1 lmode = tty.lmode; #endif #endif /* HAVE_TCHARS */ #endif /* not HAVE_TERMIO */ #ifdef HAVE_LTCHARS tty.ltchars = new_ltchars; #endif /* HAVE_LTCHARS */ #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ if (!term_initted) internal_terminal_init (); dos_ttraw (); #endif EMACS_SET_TTY (input_fd, &tty, 0); /* This code added to insure that, if flow-control is not to be used, we have an unlocked terminal at the start. */ #ifdef TCXONC if (!flow_control) ioctl (input_fd, TCXONC, 1); #endif #ifndef APOLLO #ifdef TIOCSTART if (!flow_control) ioctl (input_fd, TIOCSTART, 0); #endif #endif #if defined (HAVE_TERMIOS) || defined (HPUX9) #ifdef TCOON if (!flow_control) tcflow (input_fd, TCOON); #endif #endif #ifdef AIXHFT hft_init (); #ifdef IBMR2AIX { /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it to be only LF. This is the way that is done. */ struct termio tty; if (ioctl (1, HFTGETID, &tty) != -1) write (1, "\033[20l", 5); } #endif #endif /* AIXHFT */ #ifdef VMS /* Appears to do nothing when in PASTHRU mode. SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0, interrupt_signal, oob_chars, 0, 0, 0, 0); */ queue_kbd_input (0); #endif /* VMS */ } #ifdef F_SETFL #ifndef F_SETOWN_BUG #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ if (interrupt_input && ! read_socket_hook && EQ (Vwindow_system, Qnil)) { old_fcntl_owner = fcntl (input_fd, F_GETOWN, 0); fcntl (input_fd, F_SETOWN, getpid ()); init_sigio (input_fd); } #endif /* F_GETOWN */ #endif /* F_SETOWN_BUG */ #endif /* F_SETFL */ #ifdef BSD4_1 if (interrupt_input) init_sigio (input_fd); #endif #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */ #undef _IOFBF #endif #ifdef _IOFBF /* This symbol is defined on recent USG systems. Someone says without this call USG won't really buffer the file even with a call to setbuf. */ setvbuf (stdout, (char *) _sobuf, _IOFBF, sizeof _sobuf); #else setbuf (stdout, (char *) _sobuf); #endif #ifdef HAVE_WINDOW_SYSTEM /* Emacs' window system on MSDOG uses the `internal terminal' and therefore needs the initialization code below. */ if (EQ (Vwindow_system, Qnil) #ifndef WINDOWSNT /* When running in tty mode on NT/Win95, we have a read_socket hook, but still need the rest of the initialization code below. */ && (! read_socket_hook) #endif ) #endif set_terminal_modes (); if (!term_initted && FRAMEP (Vterminal_frame) && FRAME_TERMCAP_P (XFRAME (Vterminal_frame))) init_frame_faces (XFRAME (Vterminal_frame)); if (term_initted && no_redraw_on_reenter) { if (display_completed) direct_output_forward_char (0); } else { frame_garbaged = 1; if (FRAMEP (Vterminal_frame)) FRAME_GARBAGED_P (XFRAME (Vterminal_frame)) = 1; } term_initted = 1; } /* Return nonzero if safe to use tabs in output. At the time this is called, init_sys_modes has not been done yet. */ int tabs_safe_p () { struct emacs_tty tty; EMACS_GET_TTY (input_fd, &tty); return EMACS_TTY_TABS_OK (&tty); } /* Get terminal size from system. Store number of lines into *HEIGHTP and width into *WIDTHP. We store 0 if there's no valid information. */ void get_frame_size (widthp, heightp) int *widthp, *heightp; { #ifdef TIOCGWINSZ /* BSD-style. */ struct winsize size; if (ioctl (input_fd, TIOCGWINSZ, &size) == -1) *widthp = *heightp = 0; else { *widthp = size.ws_col; *heightp = size.ws_row; } #else #ifdef TIOCGSIZE /* SunOS - style. */ struct ttysize size; if (ioctl (input_fd, TIOCGSIZE, &size) == -1) *widthp = *heightp = 0; else { *widthp = size.ts_cols; *heightp = size.ts_lines; } #else #ifdef VMS /* Use a fresh channel since the current one may have stale info (for example, from prior to a suspend); and to avoid a dependency in the init sequence. */ int chan; struct sensemode tty; SYS$ASSIGN (&input_dsc, &chan, 0, 0); SYS$QIOW (0, chan, IO$_SENSEMODE, &tty, 0, 0, &tty.class, 12, 0, 0, 0, 0); SYS$DASSGN (chan); *widthp = tty.scr_wid; *heightp = tty.scr_len; #else #ifdef MSDOS *widthp = ScreenCols (); *heightp = ScreenRows (); #else /* system doesn't know size */ *widthp = 0; *heightp = 0; #endif #endif /* not VMS */ #endif /* not SunOS-style */ #endif /* not BSD-style */ } /* Set the logical window size associated with descriptor FD to HEIGHT and WIDTH. This is used mainly with ptys. */ int set_window_size (fd, height, width) int fd, height, width; { #ifdef TIOCSWINSZ /* BSD-style. */ struct winsize size; size.ws_row = height; size.ws_col = width; if (ioctl (fd, TIOCSWINSZ, &size) == -1) return 0; /* error */ else return 1; #else #ifdef TIOCSSIZE /* SunOS - style. */ struct ttysize size; size.ts_lines = height; size.ts_cols = width; if (ioctl (fd, TIOCGSIZE, &size) == -1) return 0; else return 1; #else return -1; #endif /* not SunOS-style */ #endif /* not BSD-style */ } /* Prepare the terminal for exiting Emacs; move the cursor to the bottom of the frame, turn off interrupt-driven I/O, etc. */ void reset_sys_modes () { struct frame *sf; if (noninteractive) { fflush (stdout); return; } if (!term_initted) return; #ifdef HAVE_WINDOW_SYSTEM /* Emacs' window system on MSDOG uses the `internal terminal' and therefore needs the clean-up code below. */ if (!EQ (Vwindow_system, Qnil) #ifndef WINDOWSNT /* When running in tty mode on NT/Win95, we have a read_socket hook, but still need the rest of the clean-up code below. */ || read_socket_hook #endif ) return; #endif sf = SELECTED_FRAME (); cursor_to (FRAME_LINES (sf) - 1, 0); clear_end_of_line (FRAME_COLS (sf)); /* clear_end_of_line may move the cursor */ cursor_to (FRAME_LINES (sf) - 1, 0); #if defined (IBMR2AIX) && defined (AIXHFT) { /* HFT devices normally use ^J as a LF/CR. We forced it to do the LF only. Now, we need to reset it. */ struct termio tty; if (ioctl (1, HFTGETID, &tty) != -1) write (1, "\033[20h", 5); } #endif reset_terminal_modes (); fflush (stdout); #ifdef BSD_SYSTEM #ifndef BSD4_1 /* Avoid possible loss of output when changing terminal modes. */ fsync (fileno (stdout)); #endif #endif #ifdef F_SETFL #ifndef F_SETOWN_BUG #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ if (interrupt_input) { reset_sigio (); fcntl (input_fd, F_SETOWN, old_fcntl_owner); } #endif /* F_SETOWN */ #endif /* F_SETOWN_BUG */ #ifdef O_NDELAY fcntl (input_fd, F_SETFL, fcntl (input_fd, F_GETFL, 0) & ~O_NDELAY); #endif #endif /* F_SETFL */ #ifdef BSD4_1 if (interrupt_input) reset_sigio (); #endif /* BSD4_1 */ if (old_tty_valid) while (EMACS_SET_TTY (input_fd, &old_tty, 0) < 0 && errno == EINTR) ; #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ dos_ttcooked (); #endif #ifdef SET_LINE_DISCIPLINE /* Ultrix's termios *ignores* any line discipline except TERMIODISC. A different old line discipline is therefore not restored, yet. Restore the old line discipline by hand. */ ioctl (0, TIOCSETD, &old_tty.main.c_line); #endif #ifdef AIXHFT hft_reset (); #endif #ifdef BSD_PGRPS widen_foreground_group (); #endif } #ifdef HAVE_PTYS /* Set up the proper status flags for use of a pty. */ void setup_pty (fd) int fd; { /* I'm told that TOICREMOTE does not mean control chars "can't be sent" but rather that they don't have input-editing or signaling effects. That should be good, because we have other ways to do those things in Emacs. However, telnet mode seems not to work on 4.2. So TIOCREMOTE is turned off now. */ /* Under hp-ux, if TIOCREMOTE is turned on, some calls will hang. In particular, the "timeout" feature (which causes a read to return if there is no data available) does this. Also it is known that telnet mode will hang in such a way that Emacs must be stopped (perhaps this is the same problem). If TIOCREMOTE is turned off, then there is a bug in hp-ux which sometimes loses data. Apparently the code which blocks the master process when the internal buffer fills up does not work. Other than this, though, everything else seems to work fine. Since the latter lossage is more benign, we may as well lose that way. -- cph */ #ifdef FIONBIO #if defined(SYSV_PTYS) || defined(UNIX98_PTYS) { int on = 1; ioctl (fd, FIONBIO, &on); } #endif #endif #ifdef IBMRTAIX /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */ /* ignore SIGHUP once we've started a child on a pty. Note that this may */ /* cause EMACS not to die when it should, i.e., when its own controlling */ /* tty goes away. I've complained to the AIX developers, and they may */ /* change this behavior, but I'm not going to hold my breath. */ signal (SIGHUP, SIG_IGN); #endif } #endif /* HAVE_PTYS */ #ifdef VMS /* Assigning an input channel is done at the start of Emacs execution. This is called each time Emacs is resumed, also, but does nothing because input_chain is no longer zero. */ void init_vms_input () { int status; if (input_fd == 0) { status = SYS$ASSIGN (&input_dsc, &input_fd, 0, 0); if (! (status & 1)) LIB$STOP (status); } } /* Deassigning the input channel is done before exiting. */ void stop_vms_input () { return SYS$DASSGN (input_fd); } short input_buffer; /* Request reading one character into the keyboard buffer. This is done as soon as the buffer becomes empty. */ void queue_kbd_input () { int status; extern kbd_input_ast (); waiting_for_ast = 0; stop_input = 0; status = SYS$QIO (0, input_fd, IO$_READVBLK, &input_iosb, kbd_input_ast, 1, &input_buffer, 1, 0, terminator_mask, 0, 0); } int input_count; /* Ast routine that is called when keyboard input comes in in accord with the SYS$QIO above. */ void kbd_input_ast () { register int c = -1; int old_errno = errno; extern EMACS_TIME *input_available_clear_time; if (waiting_for_ast) SYS$SETEF (input_ef); waiting_for_ast = 0; input_count++; #ifdef ASTDEBUG if (input_count == 25) exit (1); printf ("Ast # %d,", input_count); printf (" iosb = %x, %x, %x, %x", input_iosb.offset, input_iosb.status, input_iosb.termlen, input_iosb.term); #endif if (input_iosb.offset) { c = input_buffer; #ifdef ASTDEBUG printf (", char = 0%o", c); #endif } #ifdef ASTDEBUG printf ("\n"); fflush (stdout); sleep (1); #endif if (! stop_input) queue_kbd_input (); if (c >= 0) { struct input_event e; EVENT_INIT (e); e.kind = ASCII_KEYSTROKE_EVENT; XSETINT (e.code, c); e.frame_or_window = selected_frame; kbd_buffer_store_event (&e); } if (input_available_clear_time) EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); errno = old_errno; } /* Wait until there is something in kbd_buffer. */ void wait_for_kbd_input () { extern int have_process_input, process_exited; /* If already something, avoid doing system calls. */ if (detect_input_pending ()) { return; } /* Clear a flag, and tell ast routine above to set it. */ SYS$CLREF (input_ef); waiting_for_ast = 1; /* Check for timing error: ast happened while we were doing that. */ if (!detect_input_pending ()) { /* No timing error: wait for flag to be set. */ set_waiting_for_input (0); SYS$WFLOR (input_ef, input_eflist); clear_waiting_for_input (); if (!detect_input_pending ()) /* Check for subprocess input availability */ { int dsp = have_process_input || process_exited; SYS$CLREF (process_ef); if (have_process_input) process_command_input (); if (process_exited) process_exit (); if (dsp) { update_mode_lines++; prepare_menu_bars (); redisplay_preserve_echo_area (18); } } } waiting_for_ast = 0; } /* Get rid of any pending QIO, when we are about to suspend or when we want to throw away pending input. We wait for a positive sign that the AST routine has run and therefore there is no I/O request queued when we return. SYS$SETAST is used to avoid a timing error. */ void end_kbd_input () { #ifdef ASTDEBUG printf ("At end_kbd_input.\n"); fflush (stdout); sleep (1); #endif if (LIB$AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */ { SYS$CANCEL (input_fd); return; } SYS$SETAST (0); /* Clear a flag, and tell ast routine above to set it. */ SYS$CLREF (input_ef); waiting_for_ast = 1; stop_input = 1; SYS$CANCEL (input_fd); SYS$SETAST (1); SYS$WAITFR (input_ef); waiting_for_ast = 0; } /* Wait for either input available or time interval expiry. */ void input_wait_timeout (timeval) int timeval; /* Time to wait, in seconds */ { int time [2]; static int zero = 0; static int large = -10000000; LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ /* If already something, avoid doing system calls. */ if (detect_input_pending ()) { return; } /* Clear a flag, and tell ast routine above to set it. */ SYS$CLREF (input_ef); waiting_for_ast = 1; /* Check for timing error: ast happened while we were doing that. */ if (!detect_input_pending ()) { /* No timing error: wait for flag to be set. */ SYS$CANTIM (1, 0); if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ SYS$WFLOR (timer_ef, timer_eflist); /* Wait for timer expiry or input */ } waiting_for_ast = 0; } /* The standard `sleep' routine works some other way and it stops working if you have ever quit out of it. This one continues to work. */ sys_sleep (timeval) int timeval; { int time [2]; static int zero = 0; static int large = -10000000; LIB$EMUL (&timeval, &large, &zero, time); /* Convert to VMS format */ SYS$CANTIM (1, 0); if (SYS$SETIMR (timer_ef, time, 0, 1) & 1) /* Set timer */ SYS$WAITFR (timer_ef); /* Wait for timer expiry only */ } void init_sigio (fd) int fd; { request_sigio (); } reset_sigio () { unrequest_sigio (); } void request_sigio () { if (noninteractive) return; croak ("request sigio"); } void unrequest_sigio () { if (noninteractive) return; croak ("unrequest sigio"); } #endif /* VMS */ /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */ #ifndef CANNOT_DUMP #define NEED_STARTS #endif #ifndef SYSTEM_MALLOC #ifndef NEED_STARTS #define NEED_STARTS #endif #endif #ifdef NEED_STARTS /* Some systems that cannot dump also cannot implement these. */ /* * Return the address of the start of the text segment prior to * doing an unexec. After unexec the return value is undefined. * See crt0.c for further explanation and _start. * */ #if !(defined (__NetBSD__) && defined (__ELF__)) #ifndef HAVE_TEXT_START char * start_of_text () { #ifdef TEXT_START return ((char *) TEXT_START); #else #ifdef GOULD extern csrt (); return ((char *) csrt); #else /* not GOULD */ extern int _start (); return ((char *) _start); #endif /* GOULD */ #endif /* TEXT_START */ } #endif /* not HAVE_TEXT_START */ #endif /* * Return the address of the start of the data segment prior to * doing an unexec. After unexec the return value is undefined. * See crt0.c for further information and definition of data_start. * * Apparently, on BSD systems this is etext at startup. On * USG systems (swapping) this is highly mmu dependent and * is also dependent on whether or not the program is running * with shared text. Generally there is a (possibly large) * gap between end of text and start of data with shared text. * * On Uniplus+ systems with shared text, data starts at a * fixed address. Each port (from a given oem) is generally * different, and the specific value of the start of data can * be obtained via the UniPlus+ specific "uvar" system call, * however the method outlined in crt0.c seems to be more portable. * * Probably what will have to happen when a USG unexec is available, * at least on UniPlus, is temacs will have to be made unshared so * that text and data are contiguous. Then once loadup is complete, * unexec will produce a shared executable where the data can be * at the normal shared text boundary and the startofdata variable * will be patched by unexec to the correct value. * */ #ifndef start_of_data char * start_of_data () { #ifdef DATA_START return ((char *) DATA_START); #else #ifdef ORDINARY_LINK /* * This is a hack. Since we're not linking crt0.c or pre_crt0.c, * data_start isn't defined. We take the address of environ, which * is known to live at or near the start of the system crt0.c, and * we don't sweat the handful of bytes that might lose. */ extern char **environ; return ((char *) &environ); #else extern int data_start; return ((char *) &data_start); #endif /* ORDINARY_LINK */ #endif /* DATA_START */ } #endif /* start_of_data */ #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */ /* init_system_name sets up the string for the Lisp function system-name to return. */ #ifdef BSD4_1 #include #endif extern Lisp_Object Vsystem_name; #ifndef BSD4_1 #ifndef VMS #ifdef HAVE_SOCKETS #include #include #endif /* HAVE_SOCKETS */ #endif /* not VMS */ #endif /* not BSD4_1 */ #ifdef TRY_AGAIN #ifndef HAVE_H_ERRNO extern int h_errno; #endif #endif /* TRY_AGAIN */ void init_system_name () { #ifdef BSD4_1 Vsystem_name = build_string (sysname); #else #ifdef VMS char *sp, *end; if ((sp = egetenv ("SYS$NODE")) == 0) Vsystem_name = build_string ("vax-vms"); else if ((end = index (sp, ':')) == 0) Vsystem_name = build_string (sp); else Vsystem_name = make_string (sp, end - sp); #else #ifndef HAVE_GETHOSTNAME struct utsname uts; uname (&uts); Vsystem_name = build_string (uts.nodename); #else /* HAVE_GETHOSTNAME */ unsigned int hostname_size = 256; char *hostname = (char *) alloca (hostname_size); /* Try to get the host name; if the buffer is too short, try again. Apparently, the only indication gethostname gives of whether the buffer was large enough is the presence or absence of a '\0' in the string. Eech. */ for (;;) { gethostname (hostname, hostname_size - 1); hostname[hostname_size - 1] = '\0'; /* Was the buffer large enough for the '\0'? */ if (strlen (hostname) < hostname_size - 1) break; hostname_size <<= 1; hostname = (char *) alloca (hostname_size); } #ifdef HAVE_SOCKETS /* Turn the hostname into the official, fully-qualified hostname. Don't do this if we're going to dump; this can confuse system libraries on some machines and make the dumped emacs core dump. */ #ifndef CANNOT_DUMP if (initialized) #endif /* not CANNOT_DUMP */ if (! index (hostname, '.')) { struct hostent *hp; int count; for (count = 0;; count++) { #ifdef TRY_AGAIN h_errno = 0; #endif hp = gethostbyname (hostname); #ifdef TRY_AGAIN if (! (hp == 0 && h_errno == TRY_AGAIN)) #endif break; if (count >= 5) break; Fsleep_for (make_number (1), Qnil); } if (hp) { char *fqdn = (char *) hp->h_name; #if 0 char *p; #endif if (!index (fqdn, '.')) { /* We still don't have a fully qualified domain name. Try to find one in the list of alternate names */ char **alias = hp->h_aliases; while (*alias && !index (*alias, '.')) alias++; if (*alias) fqdn = *alias; } hostname = fqdn; #if 0 /* Convert the host name to lower case. */ /* Using ctype.h here would introduce a possible locale dependence that is probably wrong for hostnames. */ p = hostname; while (*p) { if (*p >= 'A' && *p <= 'Z') *p += 'a' - 'A'; p++; } #endif } } #endif /* HAVE_SOCKETS */ /* We used to try using getdomainname here, but NIIBE Yutaka says that getdomainname gets the NIS/YP domain which often is not the same as in Internet domain name. */ #if 0 /* Turned off because sysinfo is not really likely to return the correct Internet domain. */ #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN)) if (! index (hostname, '.')) { /* The hostname is not fully qualified. Append the domain name. */ int hostlen = strlen (hostname); int domain_size = 256; for (;;) { char *domain = (char *) alloca (domain_size + 1); char *fqdn = (char *) alloca (hostlen + 1 + domain_size + 1); int sys_domain_size = sysinfo (SI_SRPC_DOMAIN, domain, domain_size); if (sys_domain_size <= 0) break; if (domain_size < sys_domain_size) { domain_size = sys_domain_size; continue; } strcpy (fqdn, hostname); if (domain[0] == '.') strcpy (fqdn + hostlen, domain); else if (domain[0] != 0) { fqdn[hostlen] = '.'; strcpy (fqdn + hostlen + 1, domain); } hostname = fqdn; break; } } #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */ #endif /* 0 */ Vsystem_name = build_string (hostname); #endif /* HAVE_GETHOSTNAME */ #endif /* VMS */ #endif /* BSD4_1 */ { unsigned char *p; for (p = SDATA (Vsystem_name); *p; p++) if (*p == ' ' || *p == '\t') *p = '-'; } } #ifndef MSDOS #ifndef VMS #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X) #include "sysselect.h" #undef select #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT) /* Cause explanatory error message at compile time, since the select emulation is not good enough for X. */ int *x = &x_windows_lose_if_no_select_system_call; #endif /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs * Only checks read descriptors. */ /* How long to wait between checking fds in select */ #define SELECT_PAUSE 1 int select_alarmed; /* For longjmp'ing back to read_input_waiting. */ jmp_buf read_alarm_throw; /* Nonzero if the alarm signal should throw back to read_input_waiting. The read_socket_hook function sets this to 1 while it is waiting. */ int read_alarm_should_throw; SIGTYPE select_alarm () { select_alarmed = 1; #ifdef BSD4_1 sigrelse (SIGALRM); #else /* not BSD4_1 */ signal (SIGALRM, SIG_IGN); #endif /* not BSD4_1 */ SIGNAL_THREAD_CHECK (SIGALRM); if (read_alarm_should_throw) longjmp (read_alarm_throw, 1); } #ifndef WINDOWSNT /* Only rfds are checked. */ int sys_select (nfds, rfds, wfds, efds, timeout) int nfds; SELECT_TYPE *rfds, *wfds, *efds; EMACS_TIME *timeout; { int ravail = 0; SELECT_TYPE orfds; int timeoutval; int *local_timeout; extern int proc_buffered_char[]; #ifndef subprocesses int process_tick = 0, update_tick = 0; #else extern int process_tick, update_tick; #endif unsigned char buf; #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS) /* If we're using X, then the native select will work; we only need the emulation for non-X usage. */ if (!NILP (Vwindow_system)) return select (nfds, rfds, wfds, efds, timeout); #endif timeoutval = timeout ? EMACS_SECS (*timeout) : 100000; local_timeout = &timeoutval; FD_ZERO (&orfds); if (rfds) { orfds = *rfds; FD_ZERO (rfds); } if (wfds) FD_ZERO (wfds); if (efds) FD_ZERO (efds); /* If we are looking only for the terminal, with no timeout, just read it and wait -- that's more efficient. */ if (*local_timeout == 100000 && process_tick == update_tick && FD_ISSET (0, &orfds)) { int fd; for (fd = 1; fd < nfds; ++fd) if (FD_ISSET (fd, &orfds)) goto hardway; if (! detect_input_pending ()) read_input_waiting (); FD_SET (0, rfds); return 1; } hardway: /* Once a second, till the timer expires, check all the flagged read * descriptors to see if any input is available. If there is some then * set the corresponding bit in the return copy of rfds. */ while (1) { register int to_check, fd; if (rfds) { for (to_check = nfds, fd = 0; --to_check >= 0; fd++) { if (FD_ISSET (fd, &orfds)) { int avail = 0, status = 0; if (fd == 0) avail = detect_input_pending (); /* Special keyboard handler */ else { #ifdef FIONREAD status = ioctl (fd, FIONREAD, &avail); #else /* no FIONREAD */ /* Hoping it will return -1 if nothing available or 0 if all 0 chars requested are read. */ if (proc_buffered_char[fd] >= 0) avail = 1; else { avail = read (fd, &buf, 1); if (avail > 0) proc_buffered_char[fd] = buf; } #endif /* no FIONREAD */ } if (status >= 0 && avail > 0) { FD_SET (fd, rfds); ravail++; } } } } if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) break; turn_on_atimers (0); signal (SIGALRM, select_alarm); select_alarmed = 0; alarm (SELECT_PAUSE); /* Wait for a SIGALRM (or maybe a SIGTINT) */ while (select_alarmed == 0 && *local_timeout != 0 && process_tick == update_tick) { /* If we are interested in terminal input, wait by reading the terminal. That makes instant wakeup for terminal input at least. */ if (FD_ISSET (0, &orfds)) { read_input_waiting (); if (detect_input_pending ()) select_alarmed = 1; } else pause (); } (*local_timeout) -= SELECT_PAUSE; /* Reset the old alarm if there was one. */ turn_on_atimers (1); if (*local_timeout == 0) /* Stop on timer being cleared */ break; } return ravail; } #endif /* not WINDOWSNT */ /* Read keyboard input into the standard buffer, waiting for at least one character. */ void read_input_waiting () { int nread, i; extern int quit_char; if (read_socket_hook) { struct input_event hold_quit; EVENT_INIT (hold_quit); hold_quit.kind = NO_EVENT; read_alarm_should_throw = 0; if (! setjmp (read_alarm_throw)) nread = (*read_socket_hook) (0, 1, &hold_quit); else nread = -1; if (hold_quit.kind != NO_EVENT) kbd_buffer_store_event (&hold_quit); } else { struct input_event e; char buf[3]; nread = read (fileno (stdin), buf, 1); EVENT_INIT (e); /* Scan the chars for C-g and store them in kbd_buffer. */ e.kind = ASCII_KEYSTROKE_EVENT; e.frame_or_window = selected_frame; e.modifiers = 0; for (i = 0; i < nread; i++) { /* Convert chars > 0177 to meta events if desired. We do this under the same conditions that read_avail_input does. */ if (read_socket_hook == 0) { /* If the user says she has a meta key, then believe her. */ if (meta_key == 1 && (buf[i] & 0x80)) e.modifiers = meta_modifier; if (meta_key != 2) buf[i] &= ~0x80; } XSETINT (e.code, buf[i]); kbd_buffer_store_event (&e); /* Don't look at input that follows a C-g too closely. This reduces lossage due to autorepeat on C-g. */ if (buf[i] == quit_char) break; } } } #endif /* not HAVE_SELECT */ #endif /* not VMS */ #endif /* not MSDOS */ #ifdef BSD4_1 void init_sigio (fd) int fd; { if (noninteractive) return; lmode = LINTRUP | lmode; ioctl (fd, TIOCLSET, &lmode); } void reset_sigio () { if (noninteractive) return; lmode = ~LINTRUP & lmode; ioctl (0, TIOCLSET, &lmode); } void request_sigio () { if (noninteractive) return; sigrelse (SIGTINT); interrupts_deferred = 0; } void unrequest_sigio () { if (noninteractive) return; sighold (SIGTINT); interrupts_deferred = 1; } /* still inside #ifdef BSD4_1 */ #ifdef subprocesses int sigheld; /* Mask of held signals */ void sigholdx (signum) int signum; { sigheld |= sigbit (signum); sighold (signum); } void sigisheld (signum) int signum; { sigheld |= sigbit (signum); } void sigunhold (signum) int signum; { sigheld &= ~sigbit (signum); sigrelse (signum); } void sigfree () /* Free all held signals */ { int i; for (i = 0; i < NSIG; i++) if (sigheld & sigbit (i)) sigrelse (i); sigheld = 0; } int sigbit (i) { return 1 << (i - 1); } #endif /* subprocesses */ #endif /* BSD4_1 */ /* POSIX signals support - DJB */ /* Anyone with POSIX signals should have ANSI C declarations */ #ifdef POSIX_SIGNALS sigset_t empty_mask, full_mask; signal_handler_t sys_signal (int signal_number, signal_handler_t action) { struct sigaction new_action, old_action; sigemptyset (&new_action.sa_mask); new_action.sa_handler = action; #if defined (SA_RESTART) && ! defined (BROKEN_SA_RESTART) && !defined(SYNC_INPUT) /* Emacs mostly works better with restartable system services. If this flag exists, we probably want to turn it on here. However, on some systems this resets the timeout of `select' which means that `select' never finishes if it keeps getting signals. BROKEN_SA_RESTART is defined on those systems. */ /* It's not clear why the comment above says "mostly works better". --Stef When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll for pending input so we need long-running syscalls to be interrupted after a signal that sets the interrupt_input_pending flag. */ new_action.sa_flags = SA_RESTART; #else new_action.sa_flags = 0; #endif sigaction (signal_number, &new_action, &old_action); return (old_action.sa_handler); } #ifndef __GNUC__ /* If we're compiling with GCC, we don't need this function, since it can be written as a macro. */ sigset_t sys_sigmask (int sig) { sigset_t mask; sigemptyset (&mask); sigaddset (&mask, sig); return mask; } #endif /* I'd like to have these guys return pointers to the mask storage in here, but there'd be trouble if the code was saving multiple masks. I'll be safe and pass the structure. It normally won't be more than 2 bytes anyhow. - DJB */ sigset_t sys_sigblock (sigset_t new_mask) { sigset_t old_mask; sigprocmask (SIG_BLOCK, &new_mask, &old_mask); return (old_mask); } sigset_t sys_sigunblock (sigset_t new_mask) { sigset_t old_mask; sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); return (old_mask); } sigset_t sys_sigsetmask (sigset_t new_mask) { sigset_t old_mask; sigprocmask (SIG_SETMASK, &new_mask, &old_mask); return (old_mask); } #endif /* POSIX_SIGNALS */ #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST static char *my_sys_siglist[NSIG]; # ifdef sys_siglist # undef sys_siglist # endif # define sys_siglist my_sys_siglist #endif void init_signals () { #ifdef POSIX_SIGNALS sigemptyset (&empty_mask); sigfillset (&full_mask); #endif #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST if (! initialized) { # ifdef SIGABRT sys_siglist[SIGABRT] = "Aborted"; # endif # ifdef SIGAIO sys_siglist[SIGAIO] = "LAN I/O interrupt"; # endif # ifdef SIGALRM sys_siglist[SIGALRM] = "Alarm clock"; # endif # ifdef SIGBUS sys_siglist[SIGBUS] = "Bus error"; # endif # ifdef SIGCLD sys_siglist[SIGCLD] = "Child status changed"; # endif # ifdef SIGCHLD sys_siglist[SIGCHLD] = "Child status changed"; # endif # ifdef SIGCONT sys_siglist[SIGCONT] = "Continued"; # endif # ifdef SIGDANGER sys_siglist[SIGDANGER] = "Swap space dangerously low"; # endif # ifdef SIGDGNOTIFY sys_siglist[SIGDGNOTIFY] = "Notification message in queue"; # endif # ifdef SIGEMT sys_siglist[SIGEMT] = "Emulation trap"; # endif # ifdef SIGFPE sys_siglist[SIGFPE] = "Arithmetic exception"; # endif # ifdef SIGFREEZE sys_siglist[SIGFREEZE] = "SIGFREEZE"; # endif # ifdef SIGGRANT sys_siglist[SIGGRANT] = "Monitor mode granted"; # endif # ifdef SIGHUP sys_siglist[SIGHUP] = "Hangup"; # endif # ifdef SIGILL sys_siglist[SIGILL] = "Illegal instruction"; # endif # ifdef SIGINT sys_siglist[SIGINT] = "Interrupt"; # endif # ifdef SIGIO sys_siglist[SIGIO] = "I/O possible"; # endif # ifdef SIGIOINT sys_siglist[SIGIOINT] = "I/O intervention required"; # endif # ifdef SIGIOT sys_siglist[SIGIOT] = "IOT trap"; # endif # ifdef SIGKILL sys_siglist[SIGKILL] = "Killed"; # endif # ifdef SIGLOST sys_siglist[SIGLOST] = "Resource lost"; # endif # ifdef SIGLWP sys_siglist[SIGLWP] = "SIGLWP"; # endif # ifdef SIGMSG sys_siglist[SIGMSG] = "Monitor mode data available"; # endif # ifdef SIGPHONE sys_siglist[SIGWIND] = "SIGPHONE"; # endif # ifdef SIGPIPE sys_siglist[SIGPIPE] = "Broken pipe"; # endif # ifdef SIGPOLL sys_siglist[SIGPOLL] = "Pollable event occurred"; # endif # ifdef SIGPROF sys_siglist[SIGPROF] = "Profiling timer expired"; # endif # ifdef SIGPTY sys_siglist[SIGPTY] = "PTY I/O interrupt"; # endif # ifdef SIGPWR sys_siglist[SIGPWR] = "Power-fail restart"; # endif # ifdef SIGQUIT sys_siglist[SIGQUIT] = "Quit"; # endif # ifdef SIGRETRACT sys_siglist[SIGRETRACT] = "Need to relinguish monitor mode"; # endif # ifdef SIGSAK sys_siglist[SIGSAK] = "Secure attention"; # endif # ifdef SIGSEGV sys_siglist[SIGSEGV] = "Segmentation violation"; # endif # ifdef SIGSOUND sys_siglist[SIGSOUND] = "Sound completed"; # endif # ifdef SIGSTOP sys_siglist[SIGSTOP] = "Stopped (signal)"; # endif # ifdef SIGSTP sys_siglist[SIGSTP] = "Stopped (user)"; # endif # ifdef SIGSYS sys_siglist[SIGSYS] = "Bad argument to system call"; # endif # ifdef SIGTERM sys_siglist[SIGTERM] = "Terminated"; # endif # ifdef SIGTHAW sys_siglist[SIGTHAW] = "SIGTHAW"; # endif # ifdef SIGTRAP sys_siglist[SIGTRAP] = "Trace/breakpoint trap"; # endif # ifdef SIGTSTP sys_siglist[SIGTSTP] = "Stopped (user)"; # endif # ifdef SIGTTIN sys_siglist[SIGTTIN] = "Stopped (tty input)"; # endif # ifdef SIGTTOU sys_siglist[SIGTTOU] = "Stopped (tty output)"; # endif # ifdef SIGURG sys_siglist[SIGURG] = "Urgent I/O condition"; # endif # ifdef SIGUSR1 sys_siglist[SIGUSR1] = "User defined signal 1"; # endif # ifdef SIGUSR2 sys_siglist[SIGUSR2] = "User defined signal 2"; # endif # ifdef SIGVTALRM sys_siglist[SIGVTALRM] = "Virtual timer expired"; # endif # ifdef SIGWAITING sys_siglist[SIGWAITING] = "Process's LWPs are blocked"; # endif # ifdef SIGWINCH sys_siglist[SIGWINCH] = "Window size changed"; # endif # ifdef SIGWIND sys_siglist[SIGWIND] = "SIGWIND"; # endif # ifdef SIGXCPU sys_siglist[SIGXCPU] = "CPU time limit exceeded"; # endif # ifdef SIGXFSZ sys_siglist[SIGXFSZ] = "File size limit exceeded"; # endif } #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */ } #ifndef HAVE_RANDOM #ifdef random #define HAVE_RANDOM #endif #endif /* Figure out how many bits the system's random number generator uses. `random' and `lrand48' are assumed to return 31 usable bits. BSD `rand' returns a 31 bit value but the low order bits are unusable; so we'll shift it and treat it like the 15-bit USG `rand'. */ #ifndef RAND_BITS # ifdef HAVE_RANDOM # define RAND_BITS 31 # else /* !HAVE_RANDOM */ # ifdef HAVE_LRAND48 # define RAND_BITS 31 # define random lrand48 # else /* !HAVE_LRAND48 */ # define RAND_BITS 15 # if RAND_MAX == 32767 # define random rand # else /* RAND_MAX != 32767 */ # if RAND_MAX == 2147483647 # define random() (rand () >> 16) # else /* RAND_MAX != 2147483647 */ # ifdef USG # define random rand # else # define random() (rand () >> 16) # endif /* !USG */ # endif /* RAND_MAX != 2147483647 */ # endif /* RAND_MAX != 32767 */ # endif /* !HAVE_LRAND48 */ # endif /* !HAVE_RANDOM */ #endif /* !RAND_BITS */ void seed_random (arg) long arg; { #ifdef HAVE_RANDOM srandom ((unsigned int)arg); #else # ifdef HAVE_LRAND48 srand48 (arg); # else srand ((unsigned int)arg); # endif #endif } /* * Build a full Emacs-sized word out of whatever we've got. * This suffices even for a 64-bit architecture with a 15-bit rand. */ long get_random () { long val = random (); #if VALBITS > RAND_BITS val = (val << RAND_BITS) ^ random (); #if VALBITS > 2*RAND_BITS val = (val << RAND_BITS) ^ random (); #if VALBITS > 3*RAND_BITS val = (val << RAND_BITS) ^ random (); #if VALBITS > 4*RAND_BITS val = (val << RAND_BITS) ^ random (); #endif /* need at least 5 */ #endif /* need at least 4 */ #endif /* need at least 3 */ #endif /* need at least 2 */ return val & ((1L << VALBITS) - 1); } #ifdef WRONG_NAME_INSQUE insque (q,p) caddr_t q,p; { _insque (q,p); } #endif #ifdef VMS #ifdef getenv /* If any place else asks for the TERM variable, allow it to be overridden with the EMACS_TERM variable before attempting to translate the logical name TERM. As a last resort, ask for VAX C's special idea of the TERM variable. */ #undef getenv char * sys_getenv (name) char *name; { register char *val; static char buf[256]; static struct dsc$descriptor_s equiv = {sizeof (buf), DSC$K_DTYPE_T, DSC$K_CLASS_S, buf}; static struct dsc$descriptor_s d_name = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; short eqlen; if (!strcmp (name, "TERM")) { val = (char *) getenv ("EMACS_TERM"); if (val) return val; } d_name.dsc$w_length = strlen (name); d_name.dsc$a_pointer = name; if (LIB$SYS_TRNLOG (&d_name, &eqlen, &equiv) == 1) { char *str = (char *) xmalloc (eqlen + 1); bcopy (buf, str, eqlen); str[eqlen] = '\0'; /* This is a storage leak, but a pain to fix. With luck, no one will ever notice. */ return str; } return (char *) getenv (name); } #endif /* getenv */ #ifdef abort /* Since VMS doesn't believe in core dumps, the only way to debug this beast is to force a call on the debugger from within the image. */ #undef abort sys_abort () { reset_sys_modes (); LIB$SIGNAL (SS$_DEBUG); } #endif /* abort */ #endif /* VMS */ #ifdef VMS #ifdef LINK_CRTL_SHARE #ifdef SHARABLE_LIB_BUG /* Variables declared noshare and initialized in sharable libraries cannot be shared. The VMS linker incorrectly forces you to use a private version which is uninitialized... If not for this "feature", we could use the C library definition of sys_nerr and sys_errlist. */ int sys_nerr = 35; char *sys_errlist[] = { "error 0", "not owner", "no such file or directory", "no such process", "interrupted system call", "i/o error", "no such device or address", "argument list too long", "exec format error", "bad file number", "no child process", "no more processes", "not enough memory", "permission denied", "bad address", "block device required", "mount devices busy", "file exists", "cross-device link", "no such device", "not a directory", "is a directory", "invalid argument", "file table overflow", "too many open files", "not a typewriter", "text file busy", "file too big", "no space left on device", "illegal seek", "read-only file system", "too many links", "broken pipe", "math argument", "result too large", "I/O stream empty", "vax/vms specific error code nontranslatable error" }; #endif /* SHARABLE_LIB_BUG */ #endif /* LINK_CRTL_SHARE */ #endif /* VMS */ #ifndef HAVE_STRERROR #ifndef WINDOWSNT char * strerror (errnum) int errnum; { extern char *sys_errlist[]; extern int sys_nerr; if (errnum >= 0 && errnum < sys_nerr) return sys_errlist[errnum]; return (char *) "Unknown error"; } #endif /* not WINDOWSNT */ #endif /* ! HAVE_STRERROR */ int emacs_open (path, oflag, mode) const char *path; int oflag, mode; { register int rtnval; #ifdef BSD4_1 if (oflag & O_CREAT) return creat (path, mode); #endif while ((rtnval = open (path, oflag, mode)) == -1 && (errno == EINTR)) QUIT; return (rtnval); } int emacs_close (fd) int fd; { int did_retry = 0; register int rtnval; while ((rtnval = close (fd)) == -1 && (errno == EINTR)) did_retry = 1; /* If close is interrupted SunOS 4.1 may or may not have closed the file descriptor. If it did the second close will fail with errno = EBADF. That means we have succeeded. */ if (rtnval == -1 && did_retry && errno == EBADF) return 0; return rtnval; } int emacs_read (fildes, buf, nbyte) int fildes; char *buf; unsigned int nbyte; { register int rtnval; while ((rtnval = read (fildes, buf, nbyte)) == -1 && (errno == EINTR)) QUIT; return (rtnval); } int emacs_write (fildes, buf, nbyte) int fildes; const char *buf; unsigned int nbyte; { register int rtnval, bytes_written; bytes_written = 0; while (nbyte > 0) { rtnval = write (fildes, buf, nbyte); if (rtnval == -1) { if (errno == EINTR) { #ifdef SYNC_INPUT /* I originally used `QUIT' but that might causes files to be truncated if you hit C-g in the middle of it. --Stef */ if (interrupt_input_pending) handle_async_input (); #endif continue; } else return (bytes_written ? bytes_written : -1); } buf += rtnval; nbyte -= rtnval; bytes_written += rtnval; } return (bytes_written); } #ifdef USG /* * All of the following are for USG. * * On USG systems the system calls are INTERRUPTIBLE by signals * that the user program has elected to catch. Thus the system call * must be retried in these cases. To handle this without massive * changes in the source code, we remap the standard system call names * to names for our own functions in sysdep.c that do the system call * with retries. Actually, for portability reasons, it is good * programming practice, as this example shows, to limit all actual * system calls to a single occurrence in the source. Sure, this * adds an extra level of function call overhead but it is almost * always negligible. Fred Fish, Unisoft Systems Inc. */ /* * Warning, this function may not duplicate 4.2 action properly * under error conditions. */ #ifndef MAXPATHLEN /* In 4.1, param.h fails to define this. */ #define MAXPATHLEN 1024 #endif #ifndef HAVE_GETWD char * getwd (pathname) char *pathname; { char *npath, *spath; extern char *getcwd (); BLOCK_INPUT; /* getcwd uses malloc */ spath = npath = getcwd ((char *) 0, MAXPATHLEN); if (spath == 0) { UNBLOCK_INPUT; return spath; } /* On Altos 3068, getcwd can return @hostname/dir, so discard up to first slash. Should be harmless on other systems. */ while (*npath && *npath != '/') npath++; strcpy (pathname, npath); free (spath); /* getcwd uses malloc */ UNBLOCK_INPUT; return pathname; } #endif /* HAVE_GETWD */ /* * Emulate rename using unlink/link. Note that this is * only partially correct. Also, doesn't enforce restriction * that files be of same type (regular->regular, dir->dir, etc). */ #ifndef HAVE_RENAME rename (from, to) const char *from; const char *to; { if (access (from, 0) == 0) { unlink (to); if (link (from, to) == 0) if (unlink (from) == 0) return (0); } return (-1); } #endif #ifdef HPUX #ifndef HAVE_PERROR /* HPUX curses library references perror, but as far as we know it won't be called. Anyway this definition will do for now. */ perror () { } #endif /* not HAVE_PERROR */ #endif /* HPUX */ #ifndef HAVE_DUP2 /* * Emulate BSD dup2. First close newd if it already exists. * Then, attempt to dup oldd. If not successful, call dup2 recursively * until we are, then close the unsuccessful ones. */ dup2 (oldd, newd) int oldd; int newd; { register int fd, ret; emacs_close (newd); #ifdef F_DUPFD return fcntl (oldd, F_DUPFD, newd); #else fd = dup (old); if (fd == -1) return -1; if (fd == new) return new; ret = dup2 (old,new); emacs_close (fd); return ret; #endif } #endif /* not HAVE_DUP2 */ /* * Gettimeofday. Simulate as much as possible. Only accurate * to nearest second. Emacs doesn't use tzp so ignore it for now. * Only needed when subprocesses are defined. */ #ifdef subprocesses #ifndef VMS #ifndef HAVE_GETTIMEOFDAY #ifdef HAVE_TIMEVAL /* ARGSUSED */ int gettimeofday (tp, tzp) struct timeval *tp; struct timezone *tzp; { extern long time (); tp->tv_sec = time ((long *)0); tp->tv_usec = 0; if (tzp != 0) tzp->tz_minuteswest = -1; return 0; } #endif #endif #endif #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */ /* * This function will go away as soon as all the stubs fixed. (fnf) */ void croak (badfunc) char *badfunc; { printf ("%s not yet implemented\r\n", badfunc); reset_sys_modes (); exit (1); } #endif /* USG */ /* Directory routines for systems that don't have them. */ #ifdef SYSV_SYSTEM_DIR #include #if defined (BROKEN_CLOSEDIR) || !defined (HAVE_CLOSEDIR) int closedir (dirp) register DIR *dirp; /* stream from opendir */ { int rtnval; rtnval = emacs_close (dirp->dd_fd); /* Some systems (like Solaris) allocate the buffer and the DIR all in one block. Why in the world are we freeing this ourselves anyway? */ #if ! (defined (sun) && defined (USG5_4)) xfree ((char *) dirp->dd_buf); /* directory block defined in */ #endif xfree ((char *) dirp); return rtnval; } #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */ #endif /* SYSV_SYSTEM_DIR */ #ifdef NONSYSTEM_DIR_LIBRARY DIR * opendir (filename) char *filename; /* name of directory */ { register DIR *dirp; /* -> malloc'ed storage */ register int fd; /* file descriptor for read */ struct stat sbuf; /* result of fstat */ fd = emacs_open (filename, O_RDONLY, 0); if (fd < 0) return 0; BLOCK_INPUT; if (fstat (fd, &sbuf) < 0 || (sbuf.st_mode & S_IFMT) != S_IFDIR || (dirp = (DIR *) xmalloc (sizeof (DIR))) == 0) { emacs_close (fd); UNBLOCK_INPUT; return 0; /* bad luck today */ } UNBLOCK_INPUT; dirp->dd_fd = fd; dirp->dd_loc = dirp->dd_size = 0; /* refill needed */ return dirp; } void closedir (dirp) register DIR *dirp; /* stream from opendir */ { emacs_close (dirp->dd_fd); xfree ((char *) dirp); } #ifndef VMS #define DIRSIZ 14 struct olddir { ino_t od_ino; /* inode */ char od_name[DIRSIZ]; /* filename */ }; #endif /* not VMS */ struct direct dir_static; /* simulated directory contents */ /* ARGUSED */ struct direct * readdir (dirp) register DIR *dirp; /* stream from opendir */ { #ifndef VMS register struct olddir *dp; /* -> directory data */ #else /* VMS */ register struct dir$_name *dp; /* -> directory data */ register struct dir$_version *dv; /* -> version data */ #endif /* VMS */ for (; ;) { if (dirp->dd_loc >= dirp->dd_size) dirp->dd_loc = dirp->dd_size = 0; if (dirp->dd_size == 0 /* refill buffer */ && (dirp->dd_size = emacs_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) return 0; #ifndef VMS dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc]; dirp->dd_loc += sizeof (struct olddir); if (dp->od_ino != 0) /* not deleted entry */ { dir_static.d_ino = dp->od_ino; strncpy (dir_static.d_name, dp->od_name, DIRSIZ); dir_static.d_name[DIRSIZ] = '\0'; dir_static.d_namlen = strlen (dir_static.d_name); dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + dir_static.d_namlen - dir_static.d_namlen % 4; return &dir_static; /* -> simulated structure */ } #else /* VMS */ dp = (struct dir$_name *) dirp->dd_buf; if (dirp->dd_loc == 0) dirp->dd_loc = (dp->dir$b_namecount&1) ? dp->dir$b_namecount + 1 : dp->dir$b_namecount; dv = (struct dir$_version *)&dp->dir$t_name[dirp->dd_loc]; dir_static.d_ino = dv->dir$w_fid_num; dir_static.d_namlen = dp->dir$b_namecount; dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + dir_static.d_namlen - dir_static.d_namlen % 4; strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); dir_static.d_name[dir_static.d_namlen] = '\0'; dirp->dd_loc = dirp->dd_size; /* only one record at a time */ return &dir_static; #endif /* VMS */ } } #ifdef VMS /* readdirver is just like readdir except it returns all versions of a file as separate entries. */ /* ARGUSED */ struct direct * readdirver (dirp) register DIR *dirp; /* stream from opendir */ { register struct dir$_name *dp; /* -> directory data */ register struct dir$_version *dv; /* -> version data */ if (dirp->dd_loc >= dirp->dd_size - sizeof (struct dir$_name)) dirp->dd_loc = dirp->dd_size = 0; if (dirp->dd_size == 0 /* refill buffer */ && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0) return 0; dp = (struct dir$_name *) dirp->dd_buf; if (dirp->dd_loc == 0) dirp->dd_loc = (dp->dir$b_namecount & 1) ? dp->dir$b_namecount + 1 : dp->dir$b_namecount; dv = (struct dir$_version *) &dp->dir$t_name[dirp->dd_loc]; strncpy (dir_static.d_name, dp->dir$t_name, dp->dir$b_namecount); sprintf (&dir_static.d_name[dp->dir$b_namecount], ";%d", dv->dir$w_version); dir_static.d_namlen = strlen (dir_static.d_name); dir_static.d_ino = dv->dir$w_fid_num; dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + dir_static.d_namlen - dir_static.d_namlen % 4; dirp->dd_loc = ((char *) (++dv) - dp->dir$t_name); return &dir_static; } #endif /* VMS */ #endif /* NONSYSTEM_DIR_LIBRARY */ int set_file_times (filename, atime, mtime) const char *filename; EMACS_TIME atime, mtime; { #ifdef HAVE_UTIMES struct timeval tv[2]; tv[0] = atime; tv[1] = mtime; return utimes (filename, tv); #else /* not HAVE_UTIMES */ struct utimbuf utb; utb.actime = EMACS_SECS (atime); utb.modtime = EMACS_SECS (mtime); return utime (filename, &utb); #endif /* not HAVE_UTIMES */ } /* mkdir and rmdir functions, for systems which don't have them. */ #ifndef HAVE_MKDIR /* * Written by Robert Rother, Mariah Corporation, August 1985. * * If you want it, it's yours. All I ask in return is that if you * figure out how to do this in a Bourne Shell script you send me * a copy. * sdcsvax!rmr or rmr@uscd * * Severely hacked over by John Gilmore to make a 4.2BSD compatible * subroutine. 11Mar86; hoptoad!gnu * * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, * subroutine didn't return EEXIST. It does now. */ /* * Make a directory. */ #ifdef MKDIR_PROTOTYPE MKDIR_PROTOTYPE #else int mkdir (dpath, dmode) char *dpath; int dmode; #endif { int cpid, status, fd; struct stat statbuf; if (stat (dpath, &statbuf) == 0) { errno = EEXIST; /* Stat worked, so it already exists */ return -1; } /* If stat fails for a reason other than non-existence, return error */ if (errno != ENOENT) return -1; synch_process_alive = 1; switch (cpid = fork ()) { case -1: /* Error in fork */ return (-1); /* Errno is set already */ case 0: /* Child process */ /* * Cheap hack to set mode of new directory. Since this * child process is going away anyway, we zap its umask. * FIXME, this won't suffice to set SUID, SGID, etc. on this * directory. Does anybody care? */ status = umask (0); /* Get current umask */ status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ fd = emacs_open ("/dev/null", O_RDWR, 0); if (fd >= 0) { dup2 (fd, 0); dup2 (fd, 1); dup2 (fd, 2); } execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); _exit (-1); /* Can't exec /bin/mkdir */ default: /* Parent process */ wait_for_termination (cpid); } if (synch_process_death != 0 || synch_process_retcode != 0 || synch_process_termsig != 0) { errno = EIO; /* We don't know why, but */ return -1; /* /bin/mkdir failed */ } return 0; } #endif /* not HAVE_MKDIR */ #ifndef HAVE_RMDIR int rmdir (dpath) char *dpath; { int cpid, status, fd; struct stat statbuf; if (stat (dpath, &statbuf) != 0) { /* Stat just set errno. We don't have to */ return -1; } synch_process_alive = 1; switch (cpid = fork ()) { case -1: /* Error in fork */ return (-1); /* Errno is set already */ case 0: /* Child process */ fd = emacs_open ("/dev/null", O_RDWR, 0); if (fd >= 0) { dup2 (fd, 0); dup2 (fd, 1); dup2 (fd, 2); } execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); _exit (-1); /* Can't exec /bin/rmdir */ default: /* Parent process */ wait_for_termination (cpid); } if (synch_process_death != 0 || synch_process_retcode != 0 || synch_process_termsig != 0) { errno = EIO; /* We don't know why, but */ return -1; /* /bin/rmdir failed */ } return 0; } #endif /* !HAVE_RMDIR */ /* Functions for VMS */ #ifdef VMS #include #include #include /* Return as a string the VMS error string pertaining to STATUS. Reuses the same static buffer each time it is called. */ char * vmserrstr (status) int status; /* VMS status code */ { int bufadr[2]; short len; static char buf[257]; bufadr[0] = sizeof buf - 1; bufadr[1] = (int) buf; if (! (SYS$GETMSG (status, &len, bufadr, 0x1, 0) & 1)) return "untranslatable VMS error status"; buf[len] = '\0'; return buf; } #ifdef access #undef access /* The following is necessary because 'access' emulation by VMS C (2.0) does * not work correctly. (It also doesn't work well in version 2.3.) */ #ifdef VMS4_4 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \ { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string } typedef union { struct { unsigned short s_buflen; unsigned short s_code; char *s_bufadr; unsigned short *s_retlenadr; } s; int end; } item; #define buflen s.s_buflen #define code s.s_code #define bufadr s.s_bufadr #define retlenadr s.s_retlenadr #define R_OK 4 /* test for read permission */ #define W_OK 2 /* test for write permission */ #define X_OK 1 /* test for execute (search) permission */ #define F_OK 0 /* test for presence of file */ int sys_access (path, mode) char *path; int mode; { static char *user = NULL; char dir_fn[512]; /* translate possible directory spec into .DIR file name, so brain-dead * access can treat the directory like a file. */ if (directory_file_name (path, dir_fn)) path = dir_fn; if (mode == F_OK) return access (path, mode); if (user == NULL && (user = (char *) getenv ("USER")) == NULL) return -1; { int stat; int flags; int acces; unsigned short int dummy; item itemlst[3]; static int constant = ACL$C_FILE; DESCRIPTOR (path_desc, path); DESCRIPTOR (user_desc, user); flags = 0; acces = 0; if ((mode & X_OK) && ((stat = access (path, mode)) < 0 || mode == X_OK)) return stat; if (mode & R_OK) acces |= CHP$M_READ; if (mode & W_OK) acces |= CHP$M_WRITE; itemlst[0].buflen = sizeof (int); itemlst[0].code = CHP$_FLAGS; itemlst[0].bufadr = (char *) &flags; itemlst[0].retlenadr = &dummy; itemlst[1].buflen = sizeof (int); itemlst[1].code = CHP$_ACCESS; itemlst[1].bufadr = (char *) &acces; itemlst[1].retlenadr = &dummy; itemlst[2].end = CHP$_END; stat = SYS$CHECK_ACCESS (&constant, &path_desc, &user_desc, itemlst); return stat == SS$_NORMAL ? 0 : -1; } } #else /* not VMS4_4 */ #include #define ACE$M_WRITE 2 #define ACE$C_KEYID 1 static unsigned short memid, grpid; static unsigned int uic; /* Called from init_sys_modes, so it happens not very often but at least each time Emacs is loaded. */ void sys_access_reinit () { uic = 0; } int sys_access (filename, type) char * filename; int type; { struct FAB fab; struct XABPRO xab; int status, size, i, typecode, acl_controlled; unsigned int *aclptr, *aclend, aclbuf[60]; union prvdef prvmask; /* Get UIC and GRP values for protection checking. */ if (uic == 0) { status = LIB$GETJPI (&JPI$_UIC, 0, 0, &uic, 0, 0); if (! (status & 1)) return -1; memid = uic & 0xFFFF; grpid = uic >> 16; } if (type != 2) /* not checking write access */ return access (filename, type); /* Check write protection. */ #define CHECKPRIV(bit) (prvmask.bit) #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE)) /* Find privilege bits */ status = SYS$SETPRV (0, 0, 0, prvmask); if (! (status & 1)) error ("Unable to find privileges: %s", vmserrstr (status)); if (CHECKPRIV (PRV$V_BYPASS)) return 0; /* BYPASS enabled */ fab = cc$rms_fab; fab.fab$b_fac = FAB$M_GET; fab.fab$l_fna = filename; fab.fab$b_fns = strlen (filename); fab.fab$l_xab = &xab; xab = cc$rms_xabpro; xab.xab$l_aclbuf = aclbuf; xab.xab$w_aclsiz = sizeof (aclbuf); status = SYS$OPEN (&fab, 0, 0); if (! (status & 1)) return -1; SYS$CLOSE (&fab, 0, 0); /* Check system access */ if (CHECKPRIV (PRV$V_SYSPRV) && WRITABLE (XAB$V_SYS)) return 0; /* Check ACL entries, if any */ acl_controlled = 0; if (xab.xab$w_acllen > 0) { aclptr = aclbuf; aclend = &aclbuf[xab.xab$w_acllen / 4]; while (*aclptr && aclptr < aclend) { size = (*aclptr & 0xff) / 4; typecode = (*aclptr >> 8) & 0xff; if (typecode == ACE$C_KEYID) for (i = size - 1; i > 1; i--) if (aclptr[i] == uic) { acl_controlled = 1; if (aclptr[1] & ACE$M_WRITE) return 0; /* Write access through ACL */ } aclptr = &aclptr[size]; } if (acl_controlled) /* ACL specified, prohibits write access */ return -1; } /* No ACL entries specified, check normal protection */ if (WRITABLE (XAB$V_WLD)) /* World writable */ return 0; if (WRITABLE (XAB$V_GRP) && (unsigned short) (xab.xab$l_uic >> 16) == grpid) return 0; /* Group writable */ if (WRITABLE (XAB$V_OWN) && (xab.xab$l_uic & 0xFFFF) == memid) return 0; /* Owner writable */ return -1; /* Not writable */ } #endif /* not VMS4_4 */ #endif /* access */ static char vtbuf[NAM$C_MAXRSS+1]; /* translate a vms file spec to a unix path */ char * sys_translate_vms (vfile) char * vfile; { char * p; char * targ; if (!vfile) return 0; targ = vtbuf; /* leading device or logical name is a root directory */ if (p = strchr (vfile, ':')) { *targ++ = '/'; while (vfile < p) *targ++ = *vfile++; vfile++; *targ++ = '/'; } p = vfile; if (*p == '[' || *p == '<') { while (*++vfile != *p + 2) switch (*vfile) { case '.': if (vfile[-1] == *p) *targ++ = '.'; *targ++ = '/'; break; case '-': *targ++ = '.'; *targ++ = '.'; break; default: *targ++ = *vfile; break; } vfile++; *targ++ = '/'; } while (*vfile) *targ++ = *vfile++; return vtbuf; } static char utbuf[NAM$C_MAXRSS+1]; /* translate a unix path to a VMS file spec */ char * sys_translate_unix (ufile) char * ufile; { int slash_seen = 0; char *p; char * targ; if (!ufile) return 0; targ = utbuf; if (*ufile == '/') { ufile++; } while (*ufile) { switch (*ufile) { case '/': if (slash_seen) if (index (&ufile[1], '/')) *targ++ = '.'; else *targ++ = ']'; else { *targ++ = ':'; if (index (&ufile[1], '/')) *targ++ = '['; slash_seen = 1; } break; case '.': if (strncmp (ufile, "./", 2) == 0) { if (!slash_seen) { *targ++ = '['; slash_seen = 1; } ufile++; /* skip the dot */ if (index (&ufile[1], '/')) *targ++ = '.'; else *targ++ = ']'; } else if (strncmp (ufile, "../", 3) == 0) { if (!slash_seen) { *targ++ = '['; slash_seen = 1; } *targ++ = '-'; ufile += 2; /* skip the dots */ if (index (&ufile[1], '/')) *targ++ = '.'; else *targ++ = ']'; } else *targ++ = *ufile; break; default: *targ++ = *ufile; break; } ufile++; } *targ = '\0'; return utbuf; } char * getwd (pathname) char *pathname; { char *ptr, *val; extern char *getcwd (); #define MAXPATHLEN 1024 ptr = xmalloc (MAXPATHLEN); val = getcwd (ptr, MAXPATHLEN); if (val == 0) { xfree (ptr); return val; } strcpy (pathname, ptr); xfree (ptr); return pathname; } int getppid () { long item_code = JPI$_OWNER; unsigned long parent_id; int status; if (((status = LIB$GETJPI (&item_code, 0, 0, &parent_id)) & 1) == 0) { errno = EVMSERR; vaxc$errno = status; return -1; } return parent_id; } #undef getuid unsigned sys_getuid () { return (getgid () << 16) | getuid (); } #undef read int sys_read (fildes, buf, nbyte) int fildes; char *buf; unsigned int nbyte; { return read (fildes, buf, (nbyte < MAXIOSIZE ? nbyte : MAXIOSIZE)); } #if 0 int sys_write (fildes, buf, nbyte) int fildes; char *buf; unsigned int nbyte; { register int nwrote, rtnval = 0; while (nbyte > MAXIOSIZE && (nwrote = write (fildes, buf, MAXIOSIZE)) > 0) { nbyte -= nwrote; buf += nwrote; rtnval += nwrote; } if (nwrote < 0) return rtnval ? rtnval : -1; if ((nwrote = write (fildes, buf, nbyte)) < 0) return rtnval ? rtnval : -1; return (rtnval + nwrote); } #endif /* 0 */ /* * VAX/VMS VAX C RTL really loses. It insists that records * end with a newline (carriage return) character, and if they * don't it adds one (nice of it isn't it!) * * Thus we do this stupidity below. */ #undef write int sys_write (fildes, buf, nbytes) int fildes; char *buf; unsigned int nbytes; { register char *p; register char *e; int sum = 0; struct stat st; fstat (fildes, &st); p = buf; while (nbytes > 0) { int len, retval; /* Handle fixed-length files with carriage control. */ if (st.st_fab_rfm == FAB$C_FIX && ((st.st_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0)) { len = st.st_fab_mrs; retval = write (fildes, p, min (len, nbytes)); if (retval != len) return -1; retval++; /* This skips the implied carriage control */ } else { e = p + min (MAXIOSIZE, nbytes) - 1; while (*e != '\n' && e > p) e--; if (p == e) /* Ok.. so here we add a newline... sigh. */ e = p + min (MAXIOSIZE, nbytes) - 1; len = e + 1 - p; retval = write (fildes, p, len); if (retval != len) return -1; } p += retval; sum += retval; nbytes -= retval; } return sum; } /* Create file NEW copying its attributes from file OLD. If OLD is 0 or does not exist, create based on the value of vms_stmlf_recfm. */ /* Protection value the file should ultimately have. Set by create_copy_attrs, and use by rename_sansversions. */ static unsigned short int fab_final_pro; int creat_copy_attrs (old, new) char *old, *new; { struct FAB fab = cc$rms_fab; struct XABPRO xabpro; char aclbuf[256]; /* Choice of size is arbitrary. See below. */ extern int vms_stmlf_recfm; if (old) { fab.fab$b_fac = FAB$M_GET; fab.fab$l_fna = old; fab.fab$b_fns = strlen (old); fab.fab$l_xab = (char *) &xabpro; xabpro = cc$rms_xabpro; xabpro.xab$l_aclbuf = aclbuf; xabpro.xab$w_aclsiz = sizeof aclbuf; /* Call $OPEN to fill in the fab & xabpro fields. */ if (SYS$OPEN (&fab, 0, 0) & 1) { SYS$CLOSE (&fab, 0, 0); fab.fab$l_alq = 0; /* zero the allocation quantity */ if (xabpro.xab$w_acllen > 0) { if (xabpro.xab$w_acllen > sizeof aclbuf) /* If the acl buffer was too short, redo open with longer one. Wouldn't need to do this if there were some system imposed limit on the size of an ACL, but I can't find any such. */ { xabpro.xab$l_aclbuf = (char *) alloca (xabpro.xab$w_acllen); xabpro.xab$w_aclsiz = xabpro.xab$w_acllen; if (SYS$OPEN (&fab, 0, 0) & 1) SYS$CLOSE (&fab, 0, 0); else old = 0; } } else xabpro.xab$l_aclbuf = 0; } else old = 0; } fab.fab$l_fna = new; fab.fab$b_fns = strlen (new); if (!old) { fab.fab$l_xab = 0; fab.fab$b_rfm = vms_stmlf_recfm ? FAB$C_STMLF : FAB$C_VAR; fab.fab$b_rat = FAB$M_CR; } /* Set the file protections such that we will be able to manipulate this file. Once we are done writing and renaming it, we will set the protections back. */ if (old) fab_final_pro = xabpro.xab$w_pro; else SYS$SETDFPROT (0, &fab_final_pro); xabpro.xab$w_pro &= 0xff0f; /* set O:rewd for now. This is set back later. */ /* Create the new file with either default attrs or attrs copied from old file. */ if (!(SYS$CREATE (&fab, 0, 0) & 1)) return -1; SYS$CLOSE (&fab, 0, 0); /* As this is a "replacement" for creat, return a file descriptor opened for writing. */ return open (new, O_WRONLY); } #ifdef creat #undef creat #include #ifdef __GNUC__ #ifndef va_count #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1)) #endif #endif int sys_creat (va_alist) va_dcl { va_list list_incrementer; char *name; int mode; int rfd; /* related file descriptor */ int fd; /* Our new file descriptor */ int count; struct stat st_buf; char rfm[12]; char rat[15]; char mrs[13]; char fsz[13]; extern int vms_stmlf_recfm; va_count (count); va_start (list_incrementer); name = va_arg (list_incrementer, char *); mode = va_arg (list_incrementer, int); if (count > 2) rfd = va_arg (list_incrementer, int); va_end (list_incrementer); if (count > 2) { /* Use information from the related file descriptor to set record format of the newly created file. */ fstat (rfd, &st_buf); switch (st_buf.st_fab_rfm) { case FAB$C_FIX: strcpy (rfm, "rfm = fix"); sprintf (mrs, "mrs = %d", st_buf.st_fab_mrs); strcpy (rat, "rat = "); if (st_buf.st_fab_rat & FAB$M_CR) strcat (rat, "cr"); else if (st_buf.st_fab_rat & FAB$M_FTN) strcat (rat, "ftn"); else if (st_buf.st_fab_rat & FAB$M_PRN) strcat (rat, "prn"); if (st_buf.st_fab_rat & FAB$M_BLK) if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) strcat (rat, ", blk"); else strcat (rat, "blk"); return creat (name, 0, rfm, rat, mrs); case FAB$C_VFC: strcpy (rfm, "rfm = vfc"); sprintf (fsz, "fsz = %d", st_buf.st_fab_fsz); strcpy (rat, "rat = "); if (st_buf.st_fab_rat & FAB$M_CR) strcat (rat, "cr"); else if (st_buf.st_fab_rat & FAB$M_FTN) strcat (rat, "ftn"); else if (st_buf.st_fab_rat & FAB$M_PRN) strcat (rat, "prn"); if (st_buf.st_fab_rat & FAB$M_BLK) if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) strcat (rat, ", blk"); else strcat (rat, "blk"); return creat (name, 0, rfm, rat, fsz); case FAB$C_STM: strcpy (rfm, "rfm = stm"); break; case FAB$C_STMCR: strcpy (rfm, "rfm = stmcr"); break; case FAB$C_STMLF: strcpy (rfm, "rfm = stmlf"); break; case FAB$C_UDF: strcpy (rfm, "rfm = udf"); break; case FAB$C_VAR: strcpy (rfm, "rfm = var"); break; } strcpy (rat, "rat = "); if (st_buf.st_fab_rat & FAB$M_CR) strcat (rat, "cr"); else if (st_buf.st_fab_rat & FAB$M_FTN) strcat (rat, "ftn"); else if (st_buf.st_fab_rat & FAB$M_PRN) strcat (rat, "prn"); if (st_buf.st_fab_rat & FAB$M_BLK) if (st_buf.st_fab_rat & (FAB$M_CR|FAB$M_FTN|FAB$M_PRN)) strcat (rat, ", blk"); else strcat (rat, "blk"); } else { strcpy (rfm, vms_stmlf_recfm ? "rfm = stmlf" : "rfm=var"); strcpy (rat, "rat=cr"); } /* Until the VAX C RTL fixes the many bugs with modes, always use mode 0 to get the user's default protection. */ fd = creat (name, 0, rfm, rat); if (fd < 0 && errno == EEXIST) { if (unlink (name) < 0) report_file_error ("delete", build_string (name)); fd = creat (name, 0, rfm, rat); } return fd; } #endif /* creat */ /* fwrite to stdout is S L O W. Speed it up by using fputc...*/ int sys_fwrite (ptr, size, num, fp) register char * ptr; FILE * fp; { register int tot = num * size; while (tot--) fputc (*ptr++, fp); return num; } /* * The VMS C library routine creat actually creates a new version of an * existing file rather than truncating the old version. There are times * when this is not the desired behavior, for instance, when writing an * auto save file (you only want one version), or when you don't have * write permission in the directory containing the file (but the file * itself is writable). Hence this routine, which is equivalent to * "close (creat (fn, 0));" on Unix if fn already exists. */ int vms_truncate (fn) char *fn; { struct FAB xfab = cc$rms_fab; struct RAB xrab = cc$rms_rab; int status; xfab.fab$l_fop = FAB$M_TEF; /* free allocated but unused blocks on close */ xfab.fab$b_fac = FAB$M_TRN | FAB$M_GET; /* allow truncate and get access */ xfab.fab$b_shr = FAB$M_NIL; /* allow no sharing - file must be locked */ xfab.fab$l_fna = fn; xfab.fab$b_fns = strlen (fn); xfab.fab$l_dna = ";0"; /* default to latest version of the file */ xfab.fab$b_dns = 2; xrab.rab$l_fab = &xfab; /* This gibberish opens the file, positions to the first record, and deletes all records from there until the end of file. */ if ((SYS$OPEN (&xfab) & 01) == 01) { if ((SYS$CONNECT (&xrab) & 01) == 01 && (SYS$FIND (&xrab) & 01) == 01 && (SYS$TRUNCATE (&xrab) & 01) == 01) status = 0; else status = -1; } else status = -1; SYS$CLOSE (&xfab); return status; } /* Define this symbol to actually read SYSUAF.DAT. This requires either SYSPRV or a readable SYSUAF.DAT. */ #ifdef READ_SYSUAF /* * getuaf.c * * Routine to read the VMS User Authorization File and return * a specific user's record. */ static struct UAF retuaf; struct UAF * get_uaf_name (uname) char * uname; { register status; struct FAB uaf_fab; struct RAB uaf_rab; uaf_fab = cc$rms_fab; uaf_rab = cc$rms_rab; /* initialize fab fields */ uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; uaf_fab.fab$b_fns = 21; uaf_fab.fab$b_fac = FAB$M_GET; uaf_fab.fab$b_org = FAB$C_IDX; uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; /* initialize rab fields */ uaf_rab.rab$l_fab = &uaf_fab; /* open the User Authorization File */ status = SYS$OPEN (&uaf_fab); if (!(status&1)) { errno = EVMSERR; vaxc$errno = status; return 0; } status = SYS$CONNECT (&uaf_rab); if (!(status&1)) { errno = EVMSERR; vaxc$errno = status; return 0; } /* read the requested record - index is in uname */ uaf_rab.rab$l_kbf = uname; uaf_rab.rab$b_ksz = strlen (uname); uaf_rab.rab$b_rac = RAB$C_KEY; uaf_rab.rab$l_ubf = (char *)&retuaf; uaf_rab.rab$w_usz = sizeof retuaf; status = SYS$GET (&uaf_rab); if (!(status&1)) { errno = EVMSERR; vaxc$errno = status; return 0; } /* close the User Authorization File */ status = SYS$DISCONNECT (&uaf_rab); if (!(status&1)) { errno = EVMSERR; vaxc$errno = status; return 0; } status = SYS$CLOSE (&uaf_fab); if (!(status&1)) { errno = EVMSERR; vaxc$errno = status; return 0; } return &retuaf; } struct UAF * get_uaf_uic (uic) unsigned long uic; { register status; struct FAB uaf_fab; struct RAB uaf_rab; uaf_fab = cc$rms_fab; uaf_rab = cc$rms_rab; /* initialize fab fields */ uaf_fab.fab$l_fna = "SYS$SYSTEM:SYSUAF.DAT"; uaf_fab.fab$b_fns = 21; uaf_fab.fab$b_fac = FAB$M_GET; uaf_fab.fab$b_org = FAB$C_IDX; uaf_fab.fab$b_shr = FAB$M_GET|FAB$M_PUT|FAB$M_UPD|FAB$M_DEL; /* initialize rab fields */ uaf_rab.rab$l_fab = &uaf_fab; /* open the User Authorization File */ status = SYS$OPEN (&uaf_fab); if (!(status&1)) { errno = EVMSERR; vaxc$errno = status; return 0; } status = SYS$CONNECT (&uaf_rab); if (!(status&1)) { errno = EVMSERR; vaxc$errno = status; return 0; } /* read the requested record - index is in uic */ uaf_rab.rab$b_krf = 1; /* 1st alternate key */ uaf_rab.rab$l_kbf = (char *) &uic; uaf_rab.rab$b_ksz = sizeof uic; uaf_rab.rab$b_rac = RAB$C_KEY; uaf_rab.rab$l_ubf = (char *)&retuaf; uaf_rab.rab$w_usz = sizeof retuaf; status = SYS$GET (&uaf_rab); if (!(status&1)) { errno = EVMSERR; vaxc$errno = status; return 0; } /* close the User Authorization File */ status = SYS$DISCONNECT (&uaf_rab); if (!(status&1)) { errno = EVMSERR; vaxc$errno = status; return 0; } status = SYS$CLOSE (&uaf_fab); if (!(status&1)) { errno = EVMSERR; vaxc$errno = status; return 0; } return &retuaf; } static struct passwd retpw; struct passwd * cnv_uaf_pw (up) struct UAF * up; { char * ptr; /* copy these out first because if the username is 32 chars, the next section will overwrite the first byte of the UIC */ retpw.pw_uid = up->uaf$w_mem; retpw.pw_gid = up->uaf$w_grp; /* I suppose this is not the best style, to possibly overwrite one byte beyond the end of the field, but what the heck... */ ptr = &up->uaf$t_username[UAF$S_USERNAME]; while (ptr[-1] == ' ') ptr--; *ptr = '\0'; strcpy (retpw.pw_name, up->uaf$t_username); /* the rest of these are counted ascii strings */ strncpy (retpw.pw_gecos, &up->uaf$t_owner[1], up->uaf$t_owner[0]); retpw.pw_gecos[up->uaf$t_owner[0]] = '\0'; strncpy (retpw.pw_dir, &up->uaf$t_defdev[1], up->uaf$t_defdev[0]); retpw.pw_dir[up->uaf$t_defdev[0]] = '\0'; strncat (retpw.pw_dir, &up->uaf$t_defdir[1], up->uaf$t_defdir[0]); retpw.pw_dir[up->uaf$t_defdev[0] + up->uaf$t_defdir[0]] = '\0'; strncpy (retpw.pw_shell, &up->uaf$t_defcli[1], up->uaf$t_defcli[0]); retpw.pw_shell[up->uaf$t_defcli[0]] = '\0'; return &retpw; } #else /* not READ_SYSUAF */ static struct passwd retpw; #endif /* not READ_SYSUAF */ struct passwd * getpwnam (name) char * name; { #ifdef READ_SYSUAF struct UAF *up; #else char * user; char * dir; unsigned char * full; #endif /* READ_SYSUAF */ char *ptr = name; while (*ptr) { if ('a' <= *ptr && *ptr <= 'z') *ptr -= 040; ptr++; } #ifdef READ_SYSUAF if (!(up = get_uaf_name (name))) return 0; return cnv_uaf_pw (up); #else if (strcmp (name, getenv ("USER")) == 0) { retpw.pw_uid = getuid (); retpw.pw_gid = getgid (); strcpy (retpw.pw_name, name); if (full = egetenv ("FULLNAME")) strcpy (retpw.pw_gecos, full); else *retpw.pw_gecos = '\0'; strcpy (retpw.pw_dir, egetenv ("HOME")); *retpw.pw_shell = '\0'; return &retpw; } else return 0; #endif /* not READ_SYSUAF */ } struct passwd * getpwuid (uid) unsigned long uid; { #ifdef READ_SYSUAF struct UAF * up; if (!(up = get_uaf_uic (uid))) return 0; return cnv_uaf_pw (up); #else if (uid == sys_getuid ()) return getpwnam (egetenv ("USER")); else return 0; #endif /* not READ_SYSUAF */ } /* return total address space available to the current process. This is the sum of the current p0 size, p1 size and free page table entries available. */ int vlimit () { int item_code; unsigned long free_pages; unsigned long frep0va; unsigned long frep1va; register status; item_code = JPI$_FREPTECNT; if (((status = LIB$GETJPI (&item_code, 0, 0, &free_pages)) & 1) == 0) { errno = EVMSERR; vaxc$errno = status; return -1; } free_pages *= 512; item_code = JPI$_FREP0VA; if (((status = LIB$GETJPI (&item_code, 0, 0, &frep0va)) & 1) == 0) { errno = EVMSERR; vaxc$errno = status; return -1; } item_code = JPI$_FREP1VA; if (((status = LIB$GETJPI (&item_code, 0, 0, &frep1va)) & 1) == 0) { errno = EVMSERR; vaxc$errno = status; return -1; } return free_pages + frep0va + (0x7fffffff - frep1va); } int define_logical_name (varname, string) char *varname; char *string; { struct dsc$descriptor_s strdsc = {strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string}; struct dsc$descriptor_s envdsc = {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; struct dsc$descriptor_s lnmdsc = {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; return LIB$SET_LOGICAL (&envdsc, &strdsc, &lnmdsc, 0, 0); } int delete_logical_name (varname) char *varname; { struct dsc$descriptor_s envdsc = {strlen (varname), DSC$K_DTYPE_T, DSC$K_CLASS_S, varname}; struct dsc$descriptor_s lnmdsc = {7, DSC$K_DTYPE_T, DSC$K_CLASS_S, "LNM$JOB"}; return LIB$DELETE_LOGICAL (&envdsc, &lnmdsc); } int ulimit () { return 0; } int setpgrp () { return 0; } int execvp () { error ("execvp system call not implemented"); return -1; } int rename (from, to) char *from, *to; { int status; struct FAB from_fab = cc$rms_fab, to_fab = cc$rms_fab; struct NAM from_nam = cc$rms_nam, to_nam = cc$rms_nam; char from_esn[NAM$C_MAXRSS]; char to_esn[NAM$C_MAXRSS]; from_fab.fab$l_fna = from; from_fab.fab$b_fns = strlen (from); from_fab.fab$l_nam = &from_nam; from_fab.fab$l_fop = FAB$M_NAM; from_nam.nam$l_esa = from_esn; from_nam.nam$b_ess = sizeof from_esn; to_fab.fab$l_fna = to; to_fab.fab$b_fns = strlen (to); to_fab.fab$l_nam = &to_nam; to_fab.fab$l_fop = FAB$M_NAM; to_nam.nam$l_esa = to_esn; to_nam.nam$b_ess = sizeof to_esn; status = SYS$RENAME (&from_fab, 0, 0, &to_fab); if (status & 1) return 0; else { if (status == RMS$_DEV) errno = EXDEV; else errno = EVMSERR; vaxc$errno = status; return -1; } } /* This function renames a file like `rename', but it strips the version number from the "to" filename, such that the "to" file is will always be a new version. It also sets the file protection once it is finished. The protection that we will use is stored in fab_final_pro, and was set when we did a creat_copy_attrs to create the file that we are renaming. We could use the chmod function, but Eunichs uses 3 bits per user category to describe the protection, and VMS uses 4 (write and delete are separate bits). To maintain portability, the VMS implementation of `chmod' wires the W and D bits together. */ static struct fibdef fib; /* We need this initialized to zero */ char vms_file_written[NAM$C_MAXRSS]; int rename_sans_version (from,to) char *from, *to; { short int chan; int stat; short int iosb[4]; int status; struct FAB to_fab = cc$rms_fab; struct NAM to_nam = cc$rms_nam; struct dsc$descriptor fib_d ={sizeof (fib),0,0,(char*) &fib}; struct dsc$descriptor fib_attr[2] = {{sizeof (fab_final_pro),ATR$C_FPRO,0,(char*) &fab_final_pro},{0,0,0,0}}; char to_esn[NAM$C_MAXRSS]; $DESCRIPTOR (disk,to_esn); to_fab.fab$l_fna = to; to_fab.fab$b_fns = strlen (to); to_fab.fab$l_nam = &to_nam; to_fab.fab$l_fop = FAB$M_NAM; to_nam.nam$l_esa = to_esn; to_nam.nam$b_ess = sizeof to_esn; status = SYS$PARSE (&to_fab, 0, 0); /* figure out the full file name */ if (to_nam.nam$l_fnb && NAM$M_EXP_VER) *(to_nam.nam$l_ver) = '\0'; stat = rename (from, to_esn); if (stat < 0) return stat; strcpy (vms_file_written, to_esn); to_fab.fab$l_fna = vms_file_written; /* this points to the versionless name */ to_fab.fab$b_fns = strlen (vms_file_written); /* Now set the file protection to the correct value */ SYS$OPEN (&to_fab, 0, 0); /* This fills in the nam$w_fid fields */ /* Copy these fields into the fib */ fib.fib$r_fid_overlay.fib$w_fid[0] = to_nam.nam$w_fid[0]; fib.fib$r_fid_overlay.fib$w_fid[1] = to_nam.nam$w_fid[1]; fib.fib$r_fid_overlay.fib$w_fid[2] = to_nam.nam$w_fid[2]; SYS$CLOSE (&to_fab, 0, 0); stat = SYS$ASSIGN (&disk, &chan, 0, 0); /* open a channel to the disk */ if (!stat) LIB$SIGNAL (stat); stat = SYS$QIOW (0, chan, IO$_MODIFY, iosb, 0, 0, &fib_d, 0, 0, 0, &fib_attr, 0); if (!stat) LIB$SIGNAL (stat); stat = SYS$DASSGN (chan); if (!stat) LIB$SIGNAL (stat); strcpy (vms_file_written, to_esn); /* We will write this to the terminal*/ return 0; } int link (file, new) char * file, * new; { register status; struct FAB fab; struct NAM nam; unsigned short fid[3]; char esa[NAM$C_MAXRSS]; fab = cc$rms_fab; fab.fab$l_fop = FAB$M_OFP; fab.fab$l_fna = file; fab.fab$b_fns = strlen (file); fab.fab$l_nam = &nam; nam = cc$rms_nam; nam.nam$l_esa = esa; nam.nam$b_ess = NAM$C_MAXRSS; status = SYS$PARSE (&fab); if ((status & 1) == 0) { errno = EVMSERR; vaxc$errno = status; return -1; } status = SYS$SEARCH (&fab); if ((status & 1) == 0) { errno = EVMSERR; vaxc$errno = status; return -1; } fid[0] = nam.nam$w_fid[0]; fid[1] = nam.nam$w_fid[1]; fid[2] = nam.nam$w_fid[2]; fab.fab$l_fna = new; fab.fab$b_fns = strlen (new); status = SYS$PARSE (&fab); if ((status & 1) == 0) { errno = EVMSERR; vaxc$errno = status; return -1; } nam.nam$w_fid[0] = fid[0]; nam.nam$w_fid[1] = fid[1]; nam.nam$w_fid[2] = fid[2]; nam.nam$l_esa = nam.nam$l_name; nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver; status = SYS$ENTER (&fab); if ((status & 1) == 0) { errno = EVMSERR; vaxc$errno = status; return -1; } return 0; } void croak (badfunc) char *badfunc; { printf ("%s not yet implemented\r\n", badfunc); reset_sys_modes (); exit (1); } long random () { /* Arrange to return a range centered on zero. */ return rand () - (1 << 30); } void srandom (seed) { srand (seed); } #endif /* VMS */ #ifdef AIXHFT /* Called from init_sys_modes. */ void hft_init () { int junk; /* If we're not on an HFT we shouldn't do any of this. We determine if we are on an HFT by trying to get an HFT error code. If this call fails, we're not on an HFT. */ #ifdef IBMR2AIX if (ioctl (0, HFQERROR, &junk) < 0) return; #else /* not IBMR2AIX */ if (ioctl (0, HFQEIO, 0) < 0) return; #endif /* not IBMR2AIX */ /* On AIX the default hft keyboard mapping uses backspace rather than delete as the rubout key's ASCII code. Here this is changed. The bug is that there's no way to determine the old mapping, so in reset_sys_modes we need to assume that the normal map had been present. Of course, this code also doesn't help if on a terminal emulator which doesn't understand HFT VTD's. */ { struct hfbuf buf; struct hfkeymap keymap; buf.hf_bufp = (char *)&keymap; buf.hf_buflen = sizeof (keymap); keymap.hf_nkeys = 2; keymap.hfkey[0].hf_kpos = 15; keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; #ifdef IBMR2AIX keymap.hfkey[0].hf_keyidh = '<'; #else /* not IBMR2AIX */ keymap.hfkey[0].hf_page = '<'; #endif /* not IBMR2AIX */ keymap.hfkey[0].hf_char = 127; keymap.hfkey[1].hf_kpos = 15; keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; #ifdef IBMR2AIX keymap.hfkey[1].hf_keyidh = '<'; #else /* not IBMR2AIX */ keymap.hfkey[1].hf_page = '<'; #endif /* not IBMR2AIX */ keymap.hfkey[1].hf_char = 127; hftctl (0, HFSKBD, &buf); } /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly at times. */ line_ins_del_ok = char_ins_del_ok = 0; } /* Reset the rubout key to backspace. */ void hft_reset () { struct hfbuf buf; struct hfkeymap keymap; int junk; #ifdef IBMR2AIX if (ioctl (0, HFQERROR, &junk) < 0) return; #else /* not IBMR2AIX */ if (ioctl (0, HFQEIO, 0) < 0) return; #endif /* not IBMR2AIX */ buf.hf_bufp = (char *)&keymap; buf.hf_buflen = sizeof (keymap); keymap.hf_nkeys = 2; keymap.hfkey[0].hf_kpos = 15; keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE; #ifdef IBMR2AIX keymap.hfkey[0].hf_keyidh = '<'; #else /* not IBMR2AIX */ keymap.hfkey[0].hf_page = '<'; #endif /* not IBMR2AIX */ keymap.hfkey[0].hf_char = 8; keymap.hfkey[1].hf_kpos = 15; keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT; #ifdef IBMR2AIX keymap.hfkey[1].hf_keyidh = '<'; #else /* not IBMR2AIX */ keymap.hfkey[1].hf_page = '<'; #endif /* not IBMR2AIX */ keymap.hfkey[1].hf_char = 8; hftctl (0, HFSKBD, &buf); } #endif /* AIXHFT */ #ifdef USE_DL_STUBS /* These are included on Sunos 4.1 when we do not use shared libraries. X11 libraries may refer to these functions but (we hope) do not actually call them. */ void * dlopen () { return 0; } void * dlsym () { return 0; } int dlclose () { return -1; } #endif /* USE_DL_STUBS */ #ifndef BSTRING #ifndef bzero void bzero (b, length) register char *b; register int length; { #ifdef VMS short zero = 0; long max_str = 65535; while (length > max_str) { (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); length -= max_str; b += max_str; } max_str = length; (void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b); #else while (length-- > 0) *b++ = 0; #endif /* not VMS */ } #endif /* no bzero */ #endif /* BSTRING */ #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) #undef bcopy /* Saying `void' requires a declaration, above, where bcopy is used and that declaration causes pain for systems where bcopy is a macro. */ bcopy (b1, b2, length) register char *b1; register char *b2; register int length; { #ifdef VMS long max_str = 65535; while (length > max_str) { (void) LIB$MOVC3 (&max_str, b1, b2); length -= max_str; b1 += max_str; b2 += max_str; } max_str = length; (void) LIB$MOVC3 (&length, b1, b2); #else while (length-- > 0) *b2++ = *b1++; #endif /* not VMS */ } #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */ #ifndef BSTRING #ifndef bcmp int bcmp (b1, b2, length) /* This could be a macro! */ register char *b1; register char *b2; register int length; { #ifdef VMS struct dsc$descriptor_s src1 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b1}; struct dsc$descriptor_s src2 = {length, DSC$K_DTYPE_T, DSC$K_CLASS_S, b2}; return STR$COMPARE (&src1, &src2); #else while (length-- > 0) if (*b1++ != *b2++) return 1; return 0; #endif /* not VMS */ } #endif /* no bcmp */ #endif /* not BSTRING */ #ifndef HAVE_STRSIGNAL char * strsignal (code) int code; { char *signame = 0; if (0 <= code && code < NSIG) { #ifdef VMS signame = sys_errlist[code]; #else /* Cast to suppress warning if the table has const char *. */ signame = (char *) sys_siglist[code]; #endif } return signame; } #endif /* HAVE_STRSIGNAL */ /* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf (do not change this comment) */