/* vi:set ts=8 sts=4 sw=4: * * VIM - Vi IMproved by Bram Moolenaar * * Do ":help uganda" in Vim to read copying and usage conditions. * Do ":help credits" in Vim to see a list of people who contributed. * See README.txt for an overview of the Vim source code. */ /* * The stuff in this file mostly comes from the "screen" program. * Included with permission from Juergen Weigert. * Copied from "pty.c". "putenv.c" was used for putenv() in misc2.c. * * It has been modified to work better with Vim. * The parts that are not used in Vim have been deleted. * See the "screen" sources for the complete stuff. */ /* Copyright (c) 1993 * Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de) * Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de) * Copyright (c) 1987 Oliver Laumann * * This program 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. * * This program 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 this program (see the file COPYING); if not, write to the * Free Software Foundation, Inc., * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA */ /* RCS_ID("$Id: pty.c,v 1.6 2007/05/12 15:29:30 vimboss Exp $ FAU") */ #include "vim.h" #ifdef HAVE_FCNTL_H # include #endif #include #ifdef __CYGWIN32__ # include #endif #ifdef HAVE_SYS_IOCTL_H # include #endif #if HAVE_STROPTS_H #include #ifdef sinix #define buf_T __system_buf_t__ #endif #include #ifdef sinix #undef buf_T #endif # ifdef sun # include # endif #endif #ifdef HAVE_UNISTD_H # include #endif #if HAVE_TERMIO_H # include #else # ifdef HAVE_TERMIOS_H # include # endif #endif #if HAVE_SYS_STREAM_H # include #endif #if HAVE_SYS_PTEM_H # include #endif #if !defined(sun) && !defined(VMS) && !defined(MACOS) # include #endif #if defined(sun) && defined(LOCKPTY) && !defined(TIOCEXCL) # include #endif #ifdef ISC # include # include # include #endif #ifdef sgi # include #endif #if defined(_INCLUDE_HPUX_SOURCE) && !defined(hpux) # define hpux #endif /* * if no PTYRANGE[01] is in the config file, we pick a default */ #ifndef PTYRANGE0 # define PTYRANGE0 "qprs" #endif #ifndef PTYRANGE1 # define PTYRANGE1 "0123456789abcdef" #endif /* SVR4 pseudo ttys don't seem to work with SCO-5 */ #ifdef M_UNIX # undef HAVE_SVR4_PTYS #endif static void initmaster __ARGS((int)); /* * Open all ptys with O_NOCTTY, just to be on the safe side * (RISCos mips breaks otherwise) */ #ifndef O_NOCTTY # define O_NOCTTY 0 #endif static void initmaster(f) int f; { #ifndef VMS # ifdef POSIX tcflush(f, TCIOFLUSH); # else # ifdef TIOCFLUSH (void)ioctl(f, TIOCFLUSH, (char *) 0); # endif # endif # ifdef LOCKPTY (void)ioctl(f, TIOCEXCL, (char *) 0); # endif #endif } /* * This causes a hang on some systems, but is required for a properly working * pty on others. Needs to be tuned... */ int SetupSlavePTY(fd) int fd; { if (fd < 0) return 0; #if defined(I_PUSH) && defined(HAVE_SVR4_PTYS) && !defined(sgi) && !defined(linux) && !defined(__osf__) && !defined(M_UNIX) # if defined(HAVE_SYS_PTEM_H) || defined(hpux) if (ioctl(fd, I_PUSH, "ptem") != 0) return -1; # endif if (ioctl(fd, I_PUSH, "ldterm") != 0) return -1; # ifdef sun if (ioctl(fd, I_PUSH, "ttcompat") != 0) return -1; # endif #endif return 0; } #if defined(OSX) && !defined(PTY_DONE) #define PTY_DONE int OpenPTY(ttyn) char **ttyn; { int f; static char TtyName[32]; if ((f = open_controlling_pty(TtyName)) < 0) return -1; initmaster(f); *ttyn = TtyName; return f; } #endif #if (defined(sequent) || defined(_SEQUENT_)) && defined(HAVE_GETPSEUDOTTY) \ && !defined(PTY_DONE) #define PTY_DONE int OpenPTY(ttyn) char **ttyn; { char *m, *s; int f; /* used for opening a new pty-pair: */ static char PtyName[32]; static char TtyName[32]; if ((f = getpseudotty(&s, &m)) < 0) return -1; #ifdef _SEQUENT_ fvhangup(s); #endif strncpy(PtyName, m, sizeof(PtyName)); strncpy(TtyName, s, sizeof(TtyName)); initmaster(f); *ttyn = TtyName; return f; } #endif #if defined(__sgi) && !defined(PTY_DONE) #define PTY_DONE int OpenPTY(ttyn) char **ttyn; { int f; char *name; RETSIGTYPE (*sigcld)__ARGS(SIGPROTOARG); /* * SIGCHLD set to SIG_DFL for _getpty() because it may fork() and * exec() /usr/adm/mkpts */ sigcld = signal(SIGCHLD, SIG_DFL); name = _getpty(&f, O_RDWR | O_NONBLOCK | O_EXTRA, 0600, 0); signal(SIGCHLD, sigcld); if (name == 0) return -1; initmaster(f); *ttyn = name; return f; } #endif #if defined(MIPS) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE) #define PTY_DONE int OpenPTY(ttyn) char **ttyn; { int f; struct stat buf; /* used for opening a new pty-pair: */ static char TtyName[32]; if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_NONBLOCK | O_EXTRA, 0)) < 0) return -1; if (mch_fstat(f, &buf) < 0) { close(f); return -1; } sprintf(TtyName, "/dev/ttyq%d", minor(buf.st_rdev)); initmaster(f); *ttyn = TtyName; return f; } #endif #if defined(HAVE_SVR4_PTYS) && !defined(PTY_DONE) && !defined(hpux) /* NOTE: Even though HPUX can have /dev/ptmx, the code below doesn't work! */ #define PTY_DONE int OpenPTY(ttyn) char **ttyn; { int f; char *m, *ptsname(); int unlockpt __ARGS((int)), grantpt __ARGS((int)); RETSIGTYPE (*sigcld)__ARGS(SIGPROTOARG); /* used for opening a new pty-pair: */ static char TtyName[32]; if ((f = open("/dev/ptmx", O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1) return -1; /* * SIGCHLD set to SIG_DFL for grantpt() because it fork()s and * exec()s pt_chmod */ sigcld = signal(SIGCHLD, SIG_DFL); if ((m = ptsname(f)) == NULL || grantpt(f) || unlockpt(f)) { signal(SIGCHLD, sigcld); close(f); return -1; } signal(SIGCHLD, sigcld); strncpy(TtyName, m, sizeof(TtyName)); initmaster(f); *ttyn = TtyName; return f; } #endif #if defined(_AIX) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE) #define PTY_DONE #ifdef _IBMR2 int aixhack = -1; #endif int OpenPTY(ttyn) char **ttyn; { int f; /* used for opening a new pty-pair: */ static char TtyName[32]; /* a dumb looking loop replaced by mycrofts code: */ if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_EXTRA)) < 0) return -1; strncpy(TtyName, ttyname(f), sizeof(TtyName)); if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK)) { close(f); return -1; } initmaster(f); # ifdef _IBMR2 if (aixhack >= 0) close(aixhack); if ((aixhack = open(TtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) < 0) { close(f); return -1; } # endif *ttyn = TtyName; return f; } #endif #ifndef PTY_DONE # ifdef hpux static char PtyProto[] = "/dev/ptym/ptyXY"; static char TtyProto[] = "/dev/pty/ttyXY"; # else # ifdef __BEOS__ static char PtyProto[] = "/dev/pt/XY"; static char TtyProto[] = "/dev/tt/XY"; # else static char PtyProto[] = "/dev/ptyXY"; static char TtyProto[] = "/dev/ttyXY"; # endif # endif int OpenPTY(ttyn) char **ttyn; { char *p, *q, *l, *d; int f; /* used for opening a new pty-pair: */ static char PtyName[32]; static char TtyName[32]; strcpy(PtyName, PtyProto); strcpy(TtyName, TtyProto); for (p = PtyName; *p != 'X'; p++) ; for (q = TtyName; *q != 'X'; q++) ; for (l = PTYRANGE0; (*p = *l) != '\0'; l++) { for (d = PTYRANGE1; (p[1] = *d) != '\0'; d++) { #if !defined(MACOS) || defined(USE_CARBONIZED) if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1) #else if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA)) == -1) #endif continue; q[0] = *l; q[1] = *d; #ifndef MACOS if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK)) { close(f); continue; } #endif #if defined(sun) && defined(TIOCGPGRP) && !defined(SUNOS3) /* Hack to ensure that the slave side of the pty is * unused. May not work in anything other than SunOS4.1 */ { int pgrp; /* tcgetpgrp does not work (uses TIOCGETPGRP)! */ if (ioctl(f, TIOCGPGRP, (char *)&pgrp) != -1 || errno != EIO) { close(f); continue; } } #endif initmaster(f); *ttyn = TtyName; return f; } } return -1; } #endif