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Diffstat (limited to 'src/lib/openpty.c.pamphlet')
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diff --git a/src/lib/openpty.c.pamphlet b/src/lib/openpty.c.pamphlet new file mode 100644 index 00000000..20976367 --- /dev/null +++ b/src/lib/openpty.c.pamphlet @@ -0,0 +1,226 @@ +\documentclass{article} +\usepackage{axiom} +\begin{document} +\title{\$SPAD/src/lib openpty.c} +\author{The Axiom Team} +\maketitle +\begin{abstract} +\end{abstract} +\eject +\tableofcontents +\eject +\section{MAC OSX and BSD platform changes} +Since we have no other information we are adding the [[MACOSXplatform]] variable +to the list everywhere we find [[LINUXplatform]]. This may not be correct but +we have no way to know yet. We have also added the [[BSDplatform]] variable. +MAC OSX is some variant of BSD. These should probably be merged but we +cannot yet prove that. +<<mac osx platform change 1>>= +#if defined(SUN4OS5platform) ||defined(ALPHAplatform) || defined(HP10platform) || defined(LINUXplatform) || defined(MACOSXplatform) || defined(BSDplatform) +@ +<<mac osx platform change 2>>= +#if defined(SUNplatform) || defined(HP9platform) || defined(LINUXplatform) || defined(MACOSXplatform) || defined(BSDplatform) +@ +\section{License} +<<license>>= +/* +Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd. +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + - Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + - Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + + - Neither the name of The Numerical ALgorithms Group Ltd. nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS +IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER +OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, +EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ +@ +<<*>>= +<<license>> + +#include "axiom-c-macros.h" +#include <stdlib.h> +#include <unistd.h> +#include <stdio.h> +#include <fcntl.h> +#include <string.h> + +#if defined(SUN4OS5platform) || defined(HP10platform) +#include <stropts.h> +#endif + + +#include "openpty.H1" + + +/* + * The main function is ptyopen. It simply opens up both sides of a + * pseudo-terminal. It uses and saves the pathnames for + * the devices which were actually opened. + * + * If it fails it simply exits the program. + * + * + * ptyopen(controller, server, controllerPath, serverPath) + * int *controller; The file descriptor for controller side of the pty + * int *server; The file descriptor for the server side + * char *controllerPath; actually , this is not used anywhere on return + and can be taken out of the call sequence + * char *serverPath; + * + * The path name vars should be declared of size 11 or more + */ + + +int +ptyopen(int *controller,int * server, char *controllerPath,char * serverPath) +{ +#if defined(SUNplatform) || defined (HP9platform) || defined(RTplatform) ||defined(AIX370platform) || defined(BSDplatform) + int looking = 1, i; + int oflag = O_RDWR; /* flag for opening the pty */ + + for (i = 0; looking && i < 1000; i++) { + makeNextPtyNames(controllerPath, serverPath); + if (access(controllerPath, 6) != 0) continue; + *controller = open(controllerPath, oflag, 0); + if (*controller >= 0) { + *server = open(serverPath, oflag, 0); + if (*server > 0) + looking = 0; + else + close(*controller); + } + } + if (looking) { + fprintf(stderr, "Couldn't find a free pty.\n"); + exit(-1); + } + return (*controller); +#endif +#if defined RIOSplatform + int fdm,fds; + char *slavename; + + /* open master */ + if ((fdm=open("/dev/ptc",O_RDWR))<0) + perror("ptyopen failed to open /dev/ptc"); + else { + /* get slave name */ + if((slavename = ttyname(fdm))==0) + perror("ptyopen failed to get the slave device name"); + /* open slave */ + if ((fds = open(slavename, O_RDWR)) < 0 ) + perror("ptyopen: Failed to open slave"); + strcpy(serverPath,slavename); + *controller=fdm; + *server=fds; + } + return(fdm); +#endif + +<<mac osx platform change 1>> +extern int grantpt(int); +extern int unlockpt(int); +extern char* ptsname(int); + int fdm,fds; + char *slavename; + + /* open master */ + if ((fdm = open("/dev/ptmx", O_RDWR)) < 0 ) + perror("ptyopen: Failed to open /dev/ptmx"); + else { + /* change permission ofslave */ + if (grantpt(fdm) < 0) + perror("ptyopen: Failed to grant access to slave device"); + /* unlock slave */ + if (unlockpt(fdm) < 0) + perror("ptyopen: Failed to unlock master/slave pair"); + /* get name of slave */ + if ((slavename = ptsname(fdm)) == NULL) + perror("ptyopen: Failed to get name of slave device"); + /* open slave */ + if ((fds = open(slavename, O_RDWR)) < 0 ) + perror("ptyopen: Failed to open slave"); + else { +#if defined(SUN4OS5platform) || defined(HP10platform) + /* push ptem */ + if (ioctl(fds, I_PUSH, "ptem") < 0) + perror("ptyopen: Failed to push ptem"); + /* push ldterm */ + if (ioctl(fds, I_PUSH, "ldterm") < 0) + perror("ptyopen: Failed to push idterm"); +#endif + strcpy(serverPath,slavename); + *controller=fdm; + *server=fds; + } + } + return(fdm); +#endif +#if defined SGIplatform + char *fds; + fds = _getpty(controller, O_RDWR|O_NDELAY, 0600, 0); + strcpy(serverPath,fds); + if (0 == serverPath) + return(-1); + if (0 > (*server = open(serverPath,O_RDWR))) { + (void) close(*controller); + return(-1); + } + return (*controller); + +#endif +} + + +void +makeNextPtyNames(char *cont,char * serv) +{ +#ifdef AIX370platform + static int channelNo = 0; + sprintf(cont, "/dev/ptyp%02x", channelNo); + sprintf(serv, "/dev/ttyp%02x", channelNo); + channelNo++; +#endif +<<mac osx platform change 2>> + static int channelNo = 0; + static char group[] = "pqrstuvwxyzPQRST"; + static int groupNo = 0; + + sprintf(cont, "/dev/pty%c%x", group[groupNo], channelNo); + sprintf(serv, "/dev/tty%c%x", group[groupNo], channelNo); + channelNo++; /* try next */ + if (channelNo == 16) { /* move to new group */ + channelNo = 0; + groupNo++; + if (groupNo == 16) groupNo = 0; /* recycle */ + } +#endif +} +@ +\eject +\begin{thebibliography}{99} +\bibitem{1} nothing +\end{thebibliography} +\end{document} |