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
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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
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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 "qemu/osdep.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
56 #if !defined(HAVE_OPENPTY)
57 /* Once illumos has openpty(), this is going to be removed. */
58 static int openpty(int *amaster, int *aslave, char *name,
59 struct termios *termp, struct winsize *winp)
62 int mfd = -1, sfd = -1;
64 *amaster = *aslave = -1;
66 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
70 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
73 if ((slave = ptsname(mfd)) == NULL)
76 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
79 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
80 (termp != NULL && tcgetattr(sfd, termp) < 0))
88 ioctl(sfd, TIOCSWINSZ, winp);
100 static void cfmakeraw (struct termios *termios_p)
102 termios_p->c_iflag &=
103 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
104 termios_p->c_oflag &= ~OPOST;
105 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
106 termios_p->c_cflag &= ~(CSIZE|PARENB);
107 termios_p->c_cflag |= CS8;
109 termios_p->c_cc[VMIN] = 0;
110 termios_p->c_cc[VTIME] = 0;
114 int qemu_openpty_raw(int *aslave, char *pty_name)
118 #if defined(__OpenBSD__) || defined(__DragonFly__)
119 char pty_buf[PATH_MAX];
120 #define q_ptsname(x) pty_buf
122 char *pty_buf = NULL;
123 #define q_ptsname(x) ptsname(x)
126 if (openpty(&amaster, aslave, pty_buf, NULL, NULL) < 0) {
130 /* Set raw attributes on the pty. */
131 tcgetattr(*aslave, &tty);
133 tcsetattr(*aslave, TCSAFLUSH, &tty);
136 strcpy(pty_name, q_ptsname(amaster));