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Put Pseudo-TTY in rawmode for char devices

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(Daniel P. Berrange)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4338 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-05-05 10:05:31 +00:00
parent f2bf094ee7
commit 64b7b7334b
1 changed files with 62 additions and 12 deletions
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74
vl.c
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@ -2269,28 +2269,78 @@ static CharDriverState *qemu_chr_open_stdio(void)
return chr; 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__) #if defined(__linux__) || defined(__sun__)
static CharDriverState *qemu_chr_open_pty(void) static CharDriverState *qemu_chr_open_pty(void)
{ {
struct termios tty; struct termios tty;
char slave_name[1024];
int master_fd, slave_fd; int master_fd, slave_fd;
#if defined(__linux__) if (openpty(&master_fd, &slave_fd, NULL, NULL, NULL) < 0) {
/* Not satisfying */
if (openpty(&master_fd, &slave_fd, slave_name, NULL, NULL) < 0) {
return NULL; return NULL;
} }
#endif
/* Disabling local echo and line-buffered output */ /* Set raw attributes on the pty. */
tcgetattr (master_fd, &tty); cfmakeraw(&tty);
tty.c_lflag &= ~(ECHO|ICANON|ISIG); tcsetattr(slave_fd, TCSAFLUSH, &tty);
tty.c_cc[VMIN] = 1;
tty.c_cc[VTIME] = 0;
tcsetattr (master_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); return qemu_chr_open_fd(master_fd, master_fd);
} }