agetty: move vc initialization to ttyutils.h

... to make the code usable for sulogin.

Signed-off-by: Karel Zak <kzak@redhat.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/include/ttyutils.h b/include/ttyutils.h
new file mode 100644
index 000000000..949b72a7b
--- /dev/null
+++ b/include/ttyutils.h
@@ -0,0 +1,73 @@
+
+#include <termios.h>
+
+#define UL_TTY_KEEPCFLAGS	(1 << 1)
+#define UL_TTY_UTF8		(1 << 2)
+
+static inline void reset_virtual_console(struct termios *tp, int flags)
+{
+	/* Use defaults of <sys/ttydefaults.h> for base settings */
+	tp->c_iflag |= TTYDEF_IFLAG;
+	tp->c_oflag |= TTYDEF_OFLAG;
+	tp->c_lflag |= TTYDEF_LFLAG;
+
+	if ((flags & UL_TTY_KEEPCFLAGS) == 0) {
+#ifdef CBAUD
+		tp->c_lflag &= ~CBAUD;
+#endif
+		tp->c_cflag |= (B38400 | TTYDEF_CFLAG);
+	}
+
+	/* Sane setting, allow eight bit characters, no carriage return delay
+	 * the same result as `stty sane cr0 pass8'
+	 */
+	tp->c_iflag |=  (BRKINT | ICRNL | IMAXBEL);
+	tp->c_iflag &= ~(IGNBRK | INLCR | IGNCR | IXOFF | IUCLC | IXANY | ISTRIP);
+	tp->c_oflag |=  (OPOST | ONLCR | NL0 | CR0 | TAB0 | BS0 | VT0 | FF0);
+	tp->c_oflag &= ~(OLCUC | OCRNL | ONOCR | ONLRET | OFILL | \
+			    NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY);
+	tp->c_lflag |=  (ISIG | ICANON | IEXTEN | ECHO|ECHOE|ECHOK|ECHOKE);
+	tp->c_lflag &= ~(ECHONL|ECHOCTL|ECHOPRT | NOFLSH | TOSTOP);
+
+	if ((flags & UL_TTY_KEEPCFLAGS) == 0) {
+		tp->c_cflag |=  (CREAD | CS8 | HUPCL);
+		tp->c_cflag &= ~(PARODD | PARENB);
+	}
+#ifdef OFDEL
+	tp->c_oflag &= ~OFDEL;
+#endif
+#ifdef XCASE
+	tp->c_lflag &= ~XCASE;
+#endif
+#ifdef IUTF8
+	if (flags & UL_TTY_UTF8)
+		tp->c_iflag |= IUTF8;	    /* Set UTF-8 input flag */
+	else
+		tp->c_iflag &= ~IUTF8;
+#endif
+	/* VTIME and VMIN can overlap with VEOF and VEOL since they are
+	 * only used for non-canonical mode. We just set the at the
+	 * beginning, so nothing bad should happen.
+	 */
+	tp->c_cc[VTIME]    = 0;
+	tp->c_cc[VMIN]     = 1;
+	tp->c_cc[VINTR]    = CINTR;
+	tp->c_cc[VQUIT]    = CQUIT;
+	tp->c_cc[VERASE]   = CERASE; /* ASCII DEL (0177) */
+	tp->c_cc[VKILL]    = CKILL;
+	tp->c_cc[VEOF]     = CEOF;
+#ifdef VSWTC
+	tp->c_cc[VSWTC]    = _POSIX_VDISABLE;
+#elif defined(VSWTCH)
+	tp->c_cc[VSWTCH]   = _POSIX_VDISABLE;
+#endif
+	tp->c_cc[VSTART]   = CSTART;
+	tp->c_cc[VSTOP]    = CSTOP;
+	tp->c_cc[VSUSP]    = CSUSP;
+	tp->c_cc[VEOL]     = _POSIX_VDISABLE;
+	tp->c_cc[VREPRINT] = CREPRINT;
+	tp->c_cc[VDISCARD] = CDISCARD;
+	tp->c_cc[VWERASE]  = CWERASE;
+	tp->c_cc[VLNEXT]   = CLNEXT;
+	tp->c_cc[VEOL2]    = _POSIX_VDISABLE;
+}