[thirdparty/util-linux.git] / include / ttyutils.h

/*
 * No copyright is claimed.  This code is in the public domain; do with
 * it what you wish.
 *
 * Written by Karel Zak <kzak@redhat.com>
 */
#ifndef UTIL_LINUX_TTYUTILS_H
#define UTIL_LINUX_TTYUTILS_H

#include <stdlib.h>
#include <termios.h>
#include <limits.h>
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_TTYDEFAULTS_H
#include <sys/ttydefaults.h>
#endif

#ifdef USE_TTY_GROUP
# define TTY_MODE 0620
#else
# define TTY_MODE 0600
#endif
#define TTYGRPNAME      "tty"   /* name of group to own ttys */

/* Some shorthands for control characters. */
#define CTL(x)		((x) ^ 0100)	/* Assumes ASCII dialect */
#define CR		CTL('M')	/* carriage return */
#define NL		CTL('J')	/* line feed */
#define BS		CTL('H')	/* back space */
#define DEL		CTL('?')	/* delete */

/* Defaults for line-editing etc. characters; you may want to change these. */
#define DEF_ERASE	DEL		/* default erase character */
#define DEF_INTR	CTL('C')	/* default interrupt character */
#define DEF_QUIT	CTL('\\')	/* default quit char */
#define DEF_KILL	CTL('U')	/* default kill char */
#define DEF_EOF		CTL('D')	/* default EOF char */
#define DEF_EOL		0
#define DEF_SWITCH	0		/* default switch char */

/* Fallback for termios->c_cc[] */
#ifndef CREPRINT
# define CREPRINT	('r' & 037)
#endif
#ifndef CDISCARD
# define CDISCARD	('o' & 037)
#endif

/* Default termios->iflag */
#ifndef TTYDEF_IFLAG
# define TTYDEF_IFLAG	(BRKINT | ICRNL | IMAXBEL | IXON | IXANY)
#endif

/* Default termios->oflag */
#ifndef TTYDEF_OFLAG
# define TTYDEF_OFLAG	(OPOST | ONLCR /*| OXTABS*/)
#endif

/* Default termios->lflag */
#ifndef TTYDEF_LFLAG
# define TTYDEF_LFLAG	(ECHO | ICANON | ISIG | IEXTEN | ECHOE|ECHOKE|ECHOCTL)
#endif

/* Default termios->cflag */
#ifndef TTYDEF_CFLAG
# define TTYDEF_CFLAG	(CREAD | CS8 | HUPCL)
#endif

/* Storage for things detected while the login name was read. */
struct chardata {
	int erase;		/* erase character */
	int kill;		/* kill character */
	int eol;		/* end-of-line character */
	int parity;		/* what parity did we see */
	int capslock;		/* upper case without lower case */
};

#define INIT_CHARDATA(ptr) do {              \
		(ptr)->erase    = DEF_ERASE; \
		(ptr)->kill     = DEF_KILL;  \
		(ptr)->eol      = CR;        \
	        (ptr)->parity   = 0;         \
	        (ptr)->capslock = 0;         \
	} while (0)

extern int get_terminal_dimension(int *cols, int *lines);
extern int get_terminal_width(int default_width);
extern int get_terminal_type(const char **type);
extern char *get_terminal_default_type(const char *ttyname, int is_serial);
extern int get_terminal_stdfd(void);
extern int get_terminal_name(const char **path, const char **name,
			     const char **number);

#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'
	 */
#ifndef IUCLC
# define IUCLC 0
#endif
#ifndef NL0
# define NL0 0
#endif
#ifndef CR0
# define CR0 0
#endif
#ifndef BS0
# define BS0 0
#endif
#ifndef VT0
# define VT0 0
#endif
#ifndef FF0
# define FF0 0
#endif
#ifndef OLCUC
# define OLCUC 0
#endif
#ifndef OFILL
# define OFILL 0
#endif
#ifndef NLDLY
# define NLDLY 0
#endif
#ifndef CRDLY
# define CRDLY 0
#endif
#ifndef BSDLY
# define BSDLY 0
#endif
#ifndef VTDLY
# define VTDLY 0
#endif
#ifndef FFDLY
# define FFDLY 0
#endif
#ifndef TAB0
# define TAB0 0
#endif
#ifndef TABDLY
# define TABDLY 0
#endif

	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|ECHOCTL);
	tp->c_lflag &= ~(ECHONL|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;
}

#endif /* UTIL_LINUX_TTYUTILS_H */
Commit	Line	Data
0f23ee0c KZ	1	/*
	2	* No copyright is claimed. This code is in the public domain; do with
	3	* it what you wish.
	4	*
	5	* Written by Karel Zak <kzak@redhat.com>
	6	*/
0b6198ec DR	7	#ifndef UTIL_LINUX_TTYUTILS_H
0b6198ec DR	8	#define UTIL_LINUX_TTYUTILS_H
879a7ab4	9
e872e320	10	#include <stdlib.h>
879a7ab4	11	#include <termios.h>
7e9a9af1	12	#include <limits.h>
e872e320 PU	13	#ifdef HAVE_SYS_IOCTL_H
	14	#include <sys/ioctl.h>
	15	#endif
00c505d9 MF	16	#ifdef HAVE_SYS_TTYDEFAULTS_H
	17	#include <sys/ttydefaults.h>
	18	#endif
879a7ab4	19
726ffb4a KZ	20	#ifdef USE_TTY_GROUP
	21	# define TTY_MODE 0620
	22	#else
	23	# define TTY_MODE 0600
	24	#endif
	25	#define TTYGRPNAME "tty" /* name of group to own ttys */
	26
f5664477 WF	27	/* Some shorthands for control characters. */
	28	#define CTL(x) ((x) ^ 0100) /* Assumes ASCII dialect */
	29	#define CR CTL('M') /* carriage return */
	30	#define NL CTL('J') /* line feed */
	31	#define BS CTL('H') /* back space */
	32	#define DEL CTL('?') /* delete */
	33
	34	/* Defaults for line-editing etc. characters; you may want to change these. */
	35	#define DEF_ERASE DEL /* default erase character */
	36	#define DEF_INTR CTL('C') /* default interrupt character */
	37	#define DEF_QUIT CTL('\\') /* default quit char */
	38	#define DEF_KILL CTL('U') /* default kill char */
	39	#define DEF_EOF CTL('D') /* default EOF char */
	40	#define DEF_EOL 0
	41	#define DEF_SWITCH 0 /* default switch char */
	42
67129513 SJ	43	/* Fallback for termios->c_cc[] */
	44	#ifndef CREPRINT
	45	# define CREPRINT ('r' & 037)
	46	#endif
	47	#ifndef CDISCARD
	48	# define CDISCARD ('o' & 037)
	49	#endif
	50
	51	/* Default termios->iflag */
	52	#ifndef TTYDEF_IFLAG
	53	# define TTYDEF_IFLAG (BRKINT \| ICRNL \| IMAXBEL \| IXON \| IXANY)
	54	#endif
	55
	56	/* Default termios->oflag */
	57	#ifndef TTYDEF_OFLAG
	58	# define TTYDEF_OFLAG (OPOST \| ONLCR /\| OXTABS/)
	59	#endif
	60
	61	/* Default termios->lflag */
	62	#ifndef TTYDEF_LFLAG
	63	# define TTYDEF_LFLAG (ECHO \| ICANON \| ISIG \| IEXTEN \| ECHOE\|ECHOKE\|ECHOCTL)
	64	#endif
	65
	66	/* Default termios->cflag */
	67	#ifndef TTYDEF_CFLAG
	68	# define TTYDEF_CFLAG (CREAD \| CS8 \| HUPCL)
	69	#endif
	70
a73f59fa KZ	71	/* Storage for things detected while the login name was read. */
	72	struct chardata {
	73	int erase; /* erase character */
	74	int kill; /* kill character */
	75	int eol; /* end-of-line character */
	76	int parity; /* what parity did we see */
	77	int capslock; /* upper case without lower case */
	78	};
	79
f5664477 WF	80	#define INIT_CHARDATA(ptr) do { \
	81	(ptr)->erase = DEF_ERASE; \
	82	(ptr)->kill = DEF_KILL; \
ee978576	83	(ptr)->eol = CR; \
f5664477 WF	84	(ptr)->parity = 0; \
	85	(ptr)->capslock = 0; \
	86	} while (0)
	87
f46a8d7e	88	extern int get_terminal_dimension(int cols, int lines);
43b4f7ea	89	extern int get_terminal_width(int default_width);
4d9b788d	90	extern int get_terminal_type(const char **type);
cba97be9	91	extern char get_terminal_default_type(const char ttyname, int is_serial);
a6d9d23b	92	extern int get_terminal_stdfd(void);
285c1f3a	93	extern int get_terminal_name(const char path, const char name,
507341f8	94	const char **number);
4e76adb0	95
879a7ab4 KZ	96	#define UL_TTY_KEEPCFLAGS (1 << 1)
	97	#define UL_TTY_UTF8 (1 << 2)
	98
	99	static inline void reset_virtual_console(struct termios *tp, int flags)
	100	{
	101	/* Use defaults of <sys/ttydefaults.h> for base settings */
	102	tp->c_iflag \|= TTYDEF_IFLAG;
	103	tp->c_oflag \|= TTYDEF_OFLAG;
	104	tp->c_lflag \|= TTYDEF_LFLAG;
	105
	106	if ((flags & UL_TTY_KEEPCFLAGS) == 0) {
	107	#ifdef CBAUD
	108	tp->c_lflag &= ~CBAUD;
	109	#endif
	110	tp->c_cflag \|= (B38400 \| TTYDEF_CFLAG);
	111	}
	112
	113	/* Sane setting, allow eight bit characters, no carriage return delay
	114	* the same result as `stty sane cr0 pass8'
	115	*/
c32270d4 CE	116	#ifndef IUCLC
	117	# define IUCLC 0
	118	#endif
	119	#ifndef NL0
	120	# define NL0 0
	121	#endif
	122	#ifndef CR0
	123	# define CR0 0
	124	#endif
	125	#ifndef BS0
	126	# define BS0 0
	127	#endif
	128	#ifndef VT0
	129	# define VT0 0
	130	#endif
	131	#ifndef FF0
	132	# define FF0 0
	133	#endif
	134	#ifndef OLCUC
	135	# define OLCUC 0
	136	#endif
	137	#ifndef OFILL
	138	# define OFILL 0
	139	#endif
	140	#ifndef NLDLY
	141	# define NLDLY 0
	142	#endif
	143	#ifndef CRDLY
	144	# define CRDLY 0
	145	#endif
	146	#ifndef BSDLY
	147	# define BSDLY 0
	148	#endif
	149	#ifndef VTDLY
	150	# define VTDLY 0
	151	#endif
	152	#ifndef FFDLY
	153	# define FFDLY 0
67129513 SJ	154	#endif
	155	#ifndef TAB0
	156	# define TAB0 0
	157	#endif
	158	#ifndef TABDLY
	159	# define TABDLY 0
c32270d4 CE	160	#endif
c32270d4 CE	161
879a7ab4 KZ	162	tp->c_iflag \|= (BRKINT \| ICRNL \| IMAXBEL);
	163	tp->c_iflag &= ~(IGNBRK \| INLCR \| IGNCR \| IXOFF \| IUCLC \| IXANY \| ISTRIP);
	164	tp->c_oflag \|= (OPOST \| ONLCR \| NL0 \| CR0 \| TAB0 \| BS0 \| VT0 \| FF0);
	165	tp->c_oflag &= ~(OLCUC \| OCRNL \| ONOCR \| ONLRET \| OFILL \| \
	166	NLDLY\|CRDLY\|TABDLY\|BSDLY\|VTDLY\|FFDLY);
b8b8e768 KZ	167	tp->c_lflag \|= (ISIG \| ICANON \| IEXTEN \| ECHO\|ECHOE\|ECHOK\|ECHOKE\|ECHOCTL);
b8b8e768 KZ	168	tp->c_lflag &= ~(ECHONL\|ECHOPRT \| NOFLSH \| TOSTOP);
879a7ab4 KZ	169
	170	if ((flags & UL_TTY_KEEPCFLAGS) == 0) {
	171	tp->c_cflag \|= (CREAD \| CS8 \| HUPCL);
	172	tp->c_cflag &= ~(PARODD \| PARENB);
	173	}
	174	#ifdef OFDEL
	175	tp->c_oflag &= ~OFDEL;
	176	#endif
	177	#ifdef XCASE
	178	tp->c_lflag &= ~XCASE;
	179	#endif
	180	#ifdef IUTF8
	181	if (flags & UL_TTY_UTF8)
	182	tp->c_iflag \|= IUTF8; /* Set UTF-8 input flag */
	183	else
	184	tp->c_iflag &= ~IUTF8;
	185	#endif
	186	/* VTIME and VMIN can overlap with VEOF and VEOL since they are
	187	* only used for non-canonical mode. We just set the at the
	188	* beginning, so nothing bad should happen.
	189	*/
	190	tp->c_cc[VTIME] = 0;
	191	tp->c_cc[VMIN] = 1;
	192	tp->c_cc[VINTR] = CINTR;
	193	tp->c_cc[VQUIT] = CQUIT;
	194	tp->c_cc[VERASE] = CERASE; /* ASCII DEL (0177) */
	195	tp->c_cc[VKILL] = CKILL;
	196	tp->c_cc[VEOF] = CEOF;
	197	#ifdef VSWTC
	198	tp->c_cc[VSWTC] = _POSIX_VDISABLE;
	199	#elif defined(VSWTCH)
	200	tp->c_cc[VSWTCH] = _POSIX_VDISABLE;
	201	#endif
	202	tp->c_cc[VSTART] = CSTART;
	203	tp->c_cc[VSTOP] = CSTOP;
	204	tp->c_cc[VSUSP] = CSUSP;
	205	tp->c_cc[VEOL] = _POSIX_VDISABLE;
	206	tp->c_cc[VREPRINT] = CREPRINT;
	207	tp->c_cc[VDISCARD] = CDISCARD;
	208	tp->c_cc[VWERASE] = CWERASE;
	209	tp->c_cc[VLNEXT] = CLNEXT;
	210	tp->c_cc[VEOL2] = _POSIX_VDISABLE;
	211	}
0b6198ec DR	212
0b6198ec DR	213	#endif /* UTIL_LINUX_TTYUTILS_H */