4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2010 Red Hat, Inc.
7 * Wrapper function qemu_openpty() implementation.
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to deal
11 * in the Software without restriction, including without limitation the rights
12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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14 * furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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29 * This is not part of oslib-posix.c because this function
30 * uses openpty() which often in -lutil, and if we add this
31 * dependency to oslib-posix.o, every app will have to be
35 #include "config-host.h"
36 #include "qemu-common.h"
38 #if defined(__GLIBC__)
40 #elif defined CONFIG_BSD
42 # if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
47 #elif defined CONFIG_SOLARIS
55 /* Once Solaris has openpty(), this is going to be removed. */
56 static int openpty(int *amaster, int *aslave, char *name,
57 struct termios *termp, struct winsize *winp)
60 int mfd = -1, sfd = -1;
62 *amaster = *aslave = -1;
64 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
68 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
71 if ((slave = ptsname(mfd)) == NULL)
74 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
77 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
78 (termp != NULL && tcgetattr(sfd, termp) < 0))
86 ioctl(sfd, TIOCSWINSZ, winp);
97 static void cfmakeraw (struct termios *termios_p)
100 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
101 termios_p->c_oflag &= ~OPOST;
102 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
103 termios_p->c_cflag &= ~(CSIZE|PARENB);
104 termios_p->c_cflag |= CS8;
106 termios_p->c_cc[VMIN] = 0;
107 termios_p->c_cc[VTIME] = 0;
111 int qemu_openpty_raw(int *aslave, char *pty_name)
115 #if defined(__OpenBSD__) || defined(__DragonFly__)
116 char pty_buf[PATH_MAX];
117 #define q_ptsname(x) pty_buf
119 char *pty_buf = NULL;
120 #define q_ptsname(x) ptsname(x)
123 if (openpty(&amaster, aslave, pty_buf, NULL, NULL) < 0) {
127 /* Set raw attributes on the pty. */
128 tcgetattr(*aslave, &tty);
130 tcsetattr(*aslave, TCSAFLUSH, &tty);
133 strcpy(pty_name, q_ptsname(amaster));