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[Qemu-devel] [4338] Put Pseudo-TTY in rawmode for char devices
From: |
Aurelien Jarno |
Subject: |
[Qemu-devel] [4338] Put Pseudo-TTY in rawmode for char devices |
Date: |
Mon, 05 May 2008 10:05:32 +0000 |
Revision: 4338
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=4338
Author: aurel32
Date: 2008-05-05 10:05:31 +0000 (Mon, 05 May 2008)
Log Message:
-----------
Put Pseudo-TTY in rawmode for char devices
(Daniel P. Berrange)
Modified Paths:
--------------
trunk/vl.c
Modified: trunk/vl.c
===================================================================
--- trunk/vl.c 2008-05-05 06:00:27 UTC (rev 4337)
+++ trunk/vl.c 2008-05-05 10:05:31 UTC (rev 4338)
@@ -2269,28 +2269,78 @@
return chr;
}
+#ifdef __sun__
+/* Once Solaris has openpty(), this is going to be removed. */
+int openpty(int *amaster, int *aslave, char *name,
+ struct termios *termp, struct winsize *winp)
+{
+ const char *slave;
+ int mfd = -1, sfd = -1;
+
+ *amaster = *aslave = -1;
+
+ mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
+ if (mfd < 0)
+ goto err;
+
+ if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
+ goto err;
+
+ if ((slave = ptsname(mfd)) == NULL)
+ goto err;
+
+ if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
+ goto err;
+
+ if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
+ (termp != NULL && tcgetattr(sfd, termp) < 0))
+ goto err;
+
+ if (amaster)
+ *amaster = mfd;
+ if (aslave)
+ *aslave = sfd;
+ if (winp)
+ ioctl(sfd, TIOCSWINSZ, winp);
+
+ return 0;
+
+err:
+ if (sfd != -1)
+ close(sfd);
+ close(mfd);
+ return -1;
+}
+
+void cfmakeraw (struct termios *termios_p)
+{
+ termios_p->c_iflag &=
+ ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
+ termios_p->c_oflag &= ~OPOST;
+ termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
+ termios_p->c_cflag &= ~(CSIZE|PARENB);
+ termios_p->c_cflag |= CS8;
+
+ termios_p->c_cc[VMIN] = 0;
+ termios_p->c_cc[VTIME] = 0;
+}
+#endif
+
#if defined(__linux__) || defined(__sun__)
static CharDriverState *qemu_chr_open_pty(void)
{
struct termios tty;
- char slave_name[1024];
int master_fd, slave_fd;
-#if defined(__linux__)
- /* Not satisfying */
- if (openpty(&master_fd, &slave_fd, slave_name, NULL, NULL) < 0) {
+ if (openpty(&master_fd, &slave_fd, NULL, NULL, NULL) < 0) {
return NULL;
}
-#endif
- /* Disabling local echo and line-buffered output */
- tcgetattr (master_fd, &tty);
- tty.c_lflag &= ~(ECHO|ICANON|ISIG);
- tty.c_cc[VMIN] = 1;
- tty.c_cc[VTIME] = 0;
- tcsetattr (master_fd, TCSAFLUSH, &tty);
+ /* Set raw attributes on the pty. */
+ cfmakeraw(&tty);
+ tcsetattr(slave_fd, TCSAFLUSH, &tty);
- fprintf(stderr, "char device redirected to %s\n", slave_name);
+ fprintf(stderr, "char device redirected to %s\n", ptsname(master_fd));
return qemu_chr_open_fd(master_fd, master_fd);
}
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