[thirdparty/util-linux.git] / sys-utils / ldattach.c

/* line discipline loading daemon
 * open a serial device and attach a line discipline on it
 *
 * Usage:
 *	ldattach GIGASET_M101 /dev/ttyS0
 *
 * =====================================================================
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 * =====================================================================
 */

#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <termios.h>
#include <unistd.h>

#include "c.h"
#include "all-io.h"
#include "nls.h"
#include "strutils.h"
#include "closestream.h"

#include <signal.h>
#include <sys/socket.h>
#include <linux/if.h>

#include <linux/tty.h>		/* for N_GSM0710 */

#ifdef LINUX_GSMMUX_H
# include <linux/gsmmux.h>	/* Add by guowenxue */
#else
struct gsm_config
{
	unsigned int adaption;
	unsigned int encapsulation;
	unsigned int initiator;
	unsigned int t1;
	unsigned int t2;
	unsigned int t3;
	unsigned int n2;
	unsigned int mru;
	unsigned int mtu;
	unsigned int k;
	unsigned int i;
	unsigned int unused[8];		/* Padding for expansion without
					   breaking stuff */
};
# define GSMIOC_GETCONF		_IOR('G', 0, struct gsm_config)
# define GSMIOC_SETCONF		_IOW('G', 1, struct gsm_config)
#endif

#ifndef N_GIGASET_M101
# define N_GIGASET_M101 16
#endif

#ifndef N_PPS
# define N_PPS 18
#endif

#ifndef N_GSM0710
# define N_GSM0710 21
#endif

#define MAXINTROPARMLEN 32

/* attach a line discipline ioctl */
#ifndef TIOCSETD
# define TIOCSETD   0x5423
#endif

static int debug = 0;

struct ld_table {
	const char *name;
	int value;
};

/* currently supported line disciplines, plus some aliases */
static const struct ld_table ld_discs[] = {
	{ "TTY",		N_TTY },
	{ "SLIP",		N_SLIP },
	{ "MOUSE",		N_MOUSE },
	{ "PPP",		N_PPP },
	{ "STRIP",		N_STRIP },
	{ "AX25",		N_AX25 },
	{ "X25",		N_X25 },
	{ "6PACK",		N_6PACK },
	{ "R3964",		N_R3964 },
	{ "IRDA",		N_IRDA },
	{ "HDLC",		N_HDLC },
	{ "SYNC_PPP",		N_SYNC_PPP },
	{ "SYNCPPP",		N_SYNC_PPP },
	{ "HCI",		N_HCI },
	{ "GIGASET_M101",	N_GIGASET_M101 },
	{ "M101",		N_GIGASET_M101 },
	{ "GIGASET",		N_GIGASET_M101 },
	{ "PPS",		N_PPS },
	{ "GSM0710",		N_GSM0710},
	{ NULL,	0 }
};

/* known c_iflag names */
static const struct ld_table ld_iflags[] =
{
	{ "IGNBRK",	IGNBRK },
	{ "BRKINT",	BRKINT },
	{ "IGNPAR",	IGNPAR },
	{ "PARMRK",	PARMRK },
	{ "INPCK",	INPCK },
	{ "ISTRIP",	ISTRIP },
	{ "INLCR",	INLCR },
	{ "IGNCR",	IGNCR },
	{ "ICRNL",	ICRNL },
	{ "IUCLC",	IUCLC },
	{ "IXON",	IXON },
	{ "IXANY",	IXANY },
	{ "IXOFF",	IXOFF },
	{ "IMAXBEL",	IMAXBEL },
	{ "IUTF8",	IUTF8 },
	{ NULL,		0 }
};

static void dbg(char *fmt, ...)
{
	va_list args;

	if (debug == 0)
		return;
	fflush(NULL);
	va_start(args, fmt);
#ifdef HAVE_VWARNX
	vwarnx(fmt, args);
#else
	fprintf(stderr, "%s: ", program_invocation_short_name);
	vfprintf(stderr, fmt, args);
	fprintf(stderr, "\n");
#endif
	va_end(args);
	fflush(NULL);
}

static int lookup_table(const struct ld_table *tab, const char *str)
{
	const struct ld_table *t;

	for (t = tab; t && t->name; t++)
		if (!strcasecmp(t->name, str))
			return t->value;
	return -1;
}

static void print_table(FILE * out, const struct ld_table *tab)
{
	const struct ld_table *t;
	int i;

	for (t = tab, i = 1; t && t->name; t++, i++) {
		fprintf(out, "  %-12s", t->name);
		if (!(i % 5))
			fputc('\n', out);
	}
}

static int parse_iflag(char *str, int *set_iflag, int *clr_iflag)
{
	int iflag;
	char *s;

	for (s = strtok(str, ","); s != NULL; s = strtok(NULL, ",")) {
		if (*s == '-')
			s++;
		if ((iflag = lookup_table(ld_iflags, s)) < 0)
			iflag = strtos32_or_err(s, _("invalid iflag"));
		if (s > str && *(s - 1) == '-')
			*clr_iflag |= iflag;
		else
			*set_iflag |= iflag;
	}
	dbg("iflag (set/clear): %d/%d", *set_iflag, *clr_iflag);
	return 0;
}


static void __attribute__((__noreturn__)) usage(void)
{
	FILE *out = stdout;

	fputs(USAGE_HEADER, out);
	fprintf(out, _(" %s [options] <ldisc> <device>\n"), program_invocation_short_name);

	fputs(USAGE_SEPARATOR, out);
	fputs(_("Attach a line discipline to a serial line.\n"), out);

	fputs(USAGE_OPTIONS, out);
	fputs(_(" -d, --debug             print verbose messages to stderr\n"), out);
	fputs(_(" -s, --speed <value>     set serial line speed\n"), out);
	fputs(_(" -c, --intro-command <string> intro sent before ldattach\n"), out);
	fputs(_(" -p, --pause <seconds>   pause between intro and ldattach\n"), out);
	fputs(_(" -7, --sevenbits         set character size to 7 bits\n"), out);
	fputs(_(" -8, --eightbits         set character size to 8 bits\n"), out);
	fputs(_(" -n, --noparity          set parity to none\n"), out);
	fputs(_(" -e, --evenparity        set parity to even\n"), out);
	fputs(_(" -o, --oddparity         set parity to odd\n"), out);
	fputs(_(" -1, --onestopbit        set stop bits to one\n"), out);
	fputs(_(" -2, --twostopbits       set stop bits to two\n"), out);
	fputs(_(" -i, --iflag [-]<iflag>  set input mode flag\n"), out);

	fputs(USAGE_SEPARATOR, out);
	printf(USAGE_HELP_OPTIONS(25));

	fputs(_("\nKnown <ldisc> names:\n"), out);
	print_table(out, ld_discs);
	fputs(USAGE_SEPARATOR, out);

	fputs(_("\nKnown <iflag> names:\n"), out);
	print_table(out, ld_iflags);

	printf(USAGE_MAN_TAIL("ldattach(8)"));
	exit(EXIT_SUCCESS);
}

static int my_cfsetspeed(struct termios *ts, int speed)
{
	/* Standard speeds
	 * -- cfsetspeed() is able to translate number to Bxxx constants
	 */
	if (cfsetspeed(ts, speed) == 0)
		return 0;

	/* Nonstandard speeds
	 * -- we have to bypass glibc and set the speed manually (because glibc
	 *    checks for speed and supports Bxxx bit rates only)...
	 */
#if _HAVE_STRUCT_TERMIOS_C_ISPEED
# define BOTHER 0010000		/* non standard rate */
	dbg("using non-standard speeds");
	ts->c_ospeed = ts->c_ispeed = speed;
	ts->c_cflag &= ~CBAUD;
	ts->c_cflag |= BOTHER;
	return 0;
#else
	return -1;
#endif
}

static void handler(int s)
{
	dbg("got SIG %i -> exiting", s);
	exit(EXIT_SUCCESS);
}

static void gsm0710_set_conf(int tty_fd)
{
	struct gsm_config c;

	/* Add by guowenxue */
	/*  get n_gsm configuration */
	ioctl(tty_fd, GSMIOC_GETCONF, &c);
	/*  we are initiator and need encoding 0 (basic) */
	c.initiator = 1;
	c.encapsulation = 0;
	/*  our modem defaults to a maximum size of 127 bytes */
	c.mru = 127;
	c.mtu = 127;
	/*  set the new configuration */
	ioctl(tty_fd, GSMIOC_SETCONF, &c);
	/* Add by guowenxue end*/
}

int main(int argc, char **argv)
{
	int tty_fd;
	struct termios ts;
	int speed = 0, bits = '-', parity = '-', stop = '-';
	int set_iflag = 0, clr_iflag = 0;
	int ldisc;
	int optc;
	char *dev;
	int intropause = 1;
	char *introparm = NULL;

	static const struct option opttbl[] = {
		{"speed", required_argument, NULL, 's'},
		{"sevenbits", no_argument, NULL, '7'},
		{"eightbits", no_argument, NULL, '8'},
		{"noparity", no_argument, NULL, 'n'},
		{"evenparity", no_argument, NULL, 'e'},
		{"oddparity", no_argument, NULL, 'o'},
		{"onestopbit", no_argument, NULL, '1'},
		{"twostopbits", no_argument, NULL, '2'},
		{"iflag", required_argument, NULL, 'i'},
		{"help", no_argument, NULL, 'h'},
		{"version", no_argument, NULL, 'V'},
		{"debug", no_argument, NULL, 'd'},
	        {"intro-command", no_argument, NULL, 'c'},
	        {"pause", no_argument, NULL, 'p'},
		{NULL, 0, NULL, 0}
	};

	signal(SIGKILL, handler);
	signal(SIGINT, handler);

	setlocale(LC_ALL, "");
	bindtextdomain(PACKAGE, LOCALEDIR);
	textdomain(PACKAGE);
	close_stdout_atexit();

	/* parse options */
	if (argc == 0)
		errx(EXIT_FAILURE, _("bad usage"));

	while ((optc =
		getopt_long(argc, argv, "dhV78neo12s:i:c:p:", opttbl,
			    NULL)) >= 0) {
		switch (optc) {
		case 'd':
			debug = 1;
			break;
		case '1':
		case '2':
			stop = optc;
			break;
		case '7':
		case '8':
			bits = optc;
			break;
		case 'n':
		case 'e':
		case 'o':
			parity = optc;
			break;
		case 's':
			speed = strtos32_or_err(optarg, _("invalid speed argument"));
			break;
		case 'p':
			intropause = strtou32_or_err(optarg, _("invalid pause argument"));
			if (intropause > 10)
				errx(EXIT_FAILURE, "invalid pause: %s", optarg);
			break;
		case 'c':
			introparm = optarg;
			break;
		case 'i':
			parse_iflag(optarg, &set_iflag, &clr_iflag);
			break;

		case 'V':
			print_version(EXIT_SUCCESS);
		case 'h':
			usage();
		default:
			errtryhelp(EXIT_FAILURE);
		}
	}

	if (argc - optind != 2) {
		warnx(_("not enough arguments"));
		errtryhelp(EXIT_FAILURE);
	}
	/* parse line discipline specification */
	ldisc = lookup_table(ld_discs, argv[optind]);
	if (ldisc < 0)
		ldisc = strtos32_or_err(argv[optind], _("invalid line discipline argument"));

	/* ldisc specific option settings */
	if (ldisc == N_GIGASET_M101) {
		/* device specific defaults for line speed and data format */
		if (speed == 0)
			speed = 115200;
		if (bits == '-')
			bits = '8';
		if (parity == '-')
			parity = 'n';
		if (stop == '-')
			stop = '1';
	}

	/* open device */
	dev = argv[optind + 1];
	if ((tty_fd = open(dev, O_RDWR | O_NOCTTY)) < 0)
		err(EXIT_FAILURE, _("cannot open %s"), dev);
	if (!isatty(tty_fd))
		errx(EXIT_FAILURE, _("%s is not a serial line"), dev);

	dbg("opened %s", dev);

	/* set line speed and format */
	if (tcgetattr(tty_fd, &ts) < 0)
		err(EXIT_FAILURE,
		    _("cannot get terminal attributes for %s"), dev);
	cfmakeraw(&ts);
	if (speed && my_cfsetspeed(&ts, speed) < 0)
		errx(EXIT_FAILURE, _("speed %d unsupported"), speed);

	switch (stop) {
	case '1':
		ts.c_cflag &= ~CSTOPB;
		break;
	case '2':
		ts.c_cflag |= CSTOPB;
		break;
	case '-':
		break;
	default:
		abort();
	}
	switch (bits) {
	case '7':
		ts.c_cflag = (ts.c_cflag & ~CSIZE) | CS7;
		break;
	case '8':
		ts.c_cflag = (ts.c_cflag & ~CSIZE) | CS8;
		break;
	case '-':
		break;
	default:
		abort();
	}
	switch (parity) {
	case 'n':
		ts.c_cflag &= ~(PARENB | PARODD);
		break;
	case 'e':
		ts.c_cflag |= PARENB;
		ts.c_cflag &= ~PARODD;
		break;
	case 'o':
		ts.c_cflag |= (PARENB | PARODD);
		break;
	case '-':
		break;
	default:
		abort();
	}

	ts.c_cflag |= CREAD;	/* just to be on the safe side */
	ts.c_iflag |= set_iflag;
	ts.c_iflag &= ~clr_iflag;

	if (tcsetattr(tty_fd, TCSAFLUSH, &ts) < 0)
		err(EXIT_FAILURE,
		    _("cannot set terminal attributes for %s"), dev);

	dbg("set to raw %d %c%c%c: cflag=0x%x",
	    speed, bits, parity, stop, ts.c_cflag);

	if (introparm && *introparm)
	{
		dbg("intro command is '%s'", introparm);
		if (write_all(tty_fd, introparm, strlen(introparm)) != 0)
			err(EXIT_FAILURE,
			    _("cannot write intro command to %s"), dev);

		if (intropause) {
			dbg("waiting for %d seconds", intropause);
			sleep(intropause);
		}
	}

	/* Attach the line discipline. */
	if (ioctl(tty_fd, TIOCSETD, &ldisc) < 0)
		err(EXIT_FAILURE, _("cannot set line discipline"));

	dbg("line discipline set to %d", ldisc);

	/* ldisc specific post-attach actions */
	if (ldisc == N_GSM0710)
		gsm0710_set_conf(tty_fd);

	/* Go into background if not in debug mode. */
	if (!debug && daemon(0, 0) < 0)
		err(EXIT_FAILURE, _("cannot daemonize"));

	/* Sleep to keep the line discipline active. */
	pause();

	exit(EXIT_SUCCESS);
}
Commit	Line	Data
1e8d11c4 TS	1	/* line discipline loading daemon
	2	* open a serial device and attach a line discipline on it
	3	*
	4	* Usage:
	5	* ldattach GIGASET_M101 /dev/ttyS0
	6	*
	7	* =====================================================================
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation; either version 2 of
	11	* the License, or (at your option) any later version.
	12	* =====================================================================
	13	*/
	14
28e91b83 SK	15	#include <errno.h>
	16	#include <fcntl.h>
	17	#include <getopt.h>
1e8d11c4	18	#include <stdio.h>
28e91b83	19	#include <stdlib.h>
1e8d11c4	20	#include <string.h>
1e8d11c4	21	#include <sys/ioctl.h>
28e91b83 SK	22	#include <sys/stat.h>
28e91b83 SK	23	#include <sys/types.h>
f8132752	24	#include <termios.h>
1e8d11c4	25	#include <unistd.h>
1e8d11c4	26
becc79d5	27	#include "c.h"
8596f639	28	#include "all-io.h"
fcba4577	29	#include "nls.h"
7b2d3de4	30	#include "strutils.h"
efb8854f	31	#include "closestream.h"
fcba4577	32
8596f639 KZ	33	#include <signal.h>
	34	#include <sys/socket.h>
	35	#include <linux/if.h>
	36
	37	#include <linux/tty.h> /* for N_GSM0710 */
	38
	39	#ifdef LINUX_GSMMUX_H
	40	# include <linux/gsmmux.h> /* Add by guowenxue */
	41	#else
	42	struct gsm_config
	43	{
	44	unsigned int adaption;
	45	unsigned int encapsulation;
	46	unsigned int initiator;
	47	unsigned int t1;
	48	unsigned int t2;
	49	unsigned int t3;
	50	unsigned int n2;
	51	unsigned int mru;
	52	unsigned int mtu;
	53	unsigned int k;
	54	unsigned int i;
	55	unsigned int unused[8]; /* Padding for expansion without
	56	breaking stuff */
	57	};
	58	# define GSMIOC_GETCONF _IOR('G', 0, struct gsm_config)
	59	# define GSMIOC_SETCONF _IOW('G', 1, struct gsm_config)
	60	#endif
	61
1e8d11c4	62	#ifndef N_GIGASET_M101
f8132752	63	# define N_GIGASET_M101 16
1e8d11c4 TS	64	#endif
1e8d11c4 TS	65
d5f36dec TS	66	#ifndef N_PPS
	67	# define N_PPS 18
	68	#endif
	69
58c17460 TS	70	#ifndef N_GSM0710
	71	# define N_GSM0710 21
	72	#endif
	73
8596f639 KZ	74	#define MAXINTROPARMLEN 32
8596f639 KZ	75
f8132752 KZ	76	/* attach a line discipline ioctl */
	77	#ifndef TIOCSETD
	78	# define TIOCSETD 0x5423
1e8d11c4 TS	79	#endif
1e8d11c4 TS	80
1e8d11c4 TS	81	static int debug = 0;
1e8d11c4 TS	82
7b549aff	83	struct ld_table {
28e91b83 SK	84	const char *name;
28e91b83 SK	85	int value;
7b549aff KZ	86	};
7b549aff KZ	87
1e8d11c4	88	/* currently supported line disciplines, plus some aliases */
28e91b83 SK	89	static const struct ld_table ld_discs[] = {
	90	{ "TTY", N_TTY },
	91	{ "SLIP", N_SLIP },
	92	{ "MOUSE", N_MOUSE },
	93	{ "PPP", N_PPP },
	94	{ "STRIP", N_STRIP },
	95	{ "AX25", N_AX25 },
	96	{ "X25", N_X25 },
	97	{ "6PACK", N_6PACK },
	98	{ "R3964", N_R3964 },
	99	{ "IRDA", N_IRDA },
	100	{ "HDLC", N_HDLC },
	101	{ "SYNC_PPP", N_SYNC_PPP },
	102	{ "SYNCPPP", N_SYNC_PPP },
	103	{ "HCI", N_HCI },
58c17460	104	{ "GIGASET_M101", N_GIGASET_M101 },
a8023b9a SK	105	{ "M101", N_GIGASET_M101 },
a8023b9a SK	106	{ "GIGASET", N_GIGASET_M101 },
58c17460 TS	107	{ "PPS", N_PPS },
58c17460 TS	108	{ "GSM0710", N_GSM0710},
8596f639	109	{ NULL, 0 }
1e8d11c4 TS	110	};
1e8d11c4 TS	111
b091b880 TS	112	/* known c_iflag names */
	113	static const struct ld_table ld_iflags[] =
	114	{
	115	{ "IGNBRK", IGNBRK },
	116	{ "BRKINT", BRKINT },
	117	{ "IGNPAR", IGNPAR },
	118	{ "PARMRK", PARMRK },
	119	{ "INPCK", INPCK },
	120	{ "ISTRIP", ISTRIP },
	121	{ "INLCR", INLCR },
	122	{ "IGNCR", IGNCR },
	123	{ "ICRNL", ICRNL },
	124	{ "IUCLC", IUCLC },
	125	{ "IXON", IXON },
	126	{ "IXANY", IXANY },
	127	{ "IXOFF", IXOFF },
	128	{ "IMAXBEL", IMAXBEL },
	129	{ "IUTF8", IUTF8 },
28e91b83	130	{ NULL, 0 }
b091b880 TS	131	};
b091b880 TS	132
d91757a0	133	static void dbg(char *fmt, ...)
3a134012 SK	134	{
	135	va_list args;
	136
	137	if (debug == 0)
	138	return;
	139	fflush(NULL);
3a134012	140	va_start(args, fmt);
31f85fce SK	141	#ifdef HAVE_VWARNX
	142	vwarnx(fmt, args);
	143	#else
	144	fprintf(stderr, "%s: ", program_invocation_short_name);
3a134012	145	vfprintf(stderr, fmt, args);
3a134012	146	fprintf(stderr, "\n");
31f85fce SK	147	#endif
31f85fce SK	148	va_end(args);
3a134012	149	fflush(NULL);
3a134012 SK	150	}
3a134012 SK	151
7b549aff	152	static int lookup_table(const struct ld_table tab, const char str)
1e8d11c4	153	{
28e91b83	154	const struct ld_table *t;
1e8d11c4	155
28e91b83 SK	156	for (t = tab; t && t->name; t++)
	157	if (!strcasecmp(t->name, str))
	158	return t->value;
	159	return -1;
1e8d11c4 TS	160	}
1e8d11c4 TS	161
28e91b83	162	static void print_table(FILE * out, const struct ld_table *tab)
1e8d11c4	163	{
28e91b83 SK	164	const struct ld_table *t;
	165	int i;
	166
	167	for (t = tab, i = 1; t && t->name; t++, i++) {
b5225af3 TS	168	fprintf(out, " %-12s", t->name);
b5225af3 TS	169	if (!(i % 5))
28e91b83 SK	170	fputc('\n', out);
28e91b83 SK	171	}
7b549aff KZ	172	}
7b549aff KZ	173
b091b880 TS	174	static int parse_iflag(char str, int set_iflag, int *clr_iflag)
b091b880 TS	175	{
28e91b83	176	int iflag;
7b2d3de4	177	char *s;
28e91b83 SK	178
	179	for (s = strtok(str, ","); s != NULL; s = strtok(NULL, ",")) {
	180	if (*s == '-')
	181	s++;
7b2d3de4	182	if ((iflag = lookup_table(ld_iflags, s)) < 0)
20a39982	183	iflag = strtos32_or_err(s, _("invalid iflag"));
28e91b83 SK	184	if (s > str && *(s - 1) == '-')
	185	*clr_iflag \|= iflag;
	186	else
	187	*set_iflag \|= iflag;
b091b880	188	}
28e91b83 SK	189	dbg("iflag (set/clear): %d/%d", set_iflag, clr_iflag);
28e91b83 SK	190	return 0;
b091b880 TS	191	}
	192
	193
5118d1be	194	static void __attribute__((__noreturn__)) usage(void)
7b549aff	195	{
5118d1be	196	FILE *out = stdout;
b5b28b43	197
a8023b9a SK	198	fputs(USAGE_HEADER, out);
a8023b9a SK	199	fprintf(out, _(" %s [options] <ldisc> <device>\n"), program_invocation_short_name);
a8023b9a	200
451dbcfa BS	201	fputs(USAGE_SEPARATOR, out);
	202	fputs(_("Attach a line discipline to a serial line.\n"), out);
	203
	204	fputs(USAGE_OPTIONS, out);
a8023b9a SK	205	fputs(_(" -d, --debug print verbose messages to stderr\n"), out);
a8023b9a SK	206	fputs(_(" -s, --speed <value> set serial line speed\n"), out);
8596f639 KZ	207	fputs(_(" -c, --intro-command <string> intro sent before ldattach\n"), out);
8596f639 KZ	208	fputs(_(" -p, --pause <seconds> pause between intro and ldattach\n"), out);
a8023b9a SK	209	fputs(_(" -7, --sevenbits set character size to 7 bits\n"), out);
	210	fputs(_(" -8, --eightbits set character size to 8 bits\n"), out);
	211	fputs(_(" -n, --noparity set parity to none\n"), out);
	212	fputs(_(" -e, --evenparity set parity to even\n"), out);
	213	fputs(_(" -o, --oddparity set parity to odd\n"), out);
	214	fputs(_(" -1, --onestopbit set stop bits to one\n"), out);
	215	fputs(_(" -2, --twostopbits set stop bits to two\n"), out);
	216	fputs(_(" -i, --iflag [-]<iflag> set input mode flag\n"), out);
5ff20423	217
a8023b9a	218	fputs(USAGE_SEPARATOR, out);
f45f3ec3	219	printf(USAGE_HELP_OPTIONS(25));
158e4182	220
28e91b83 SK	221	fputs(_("\nKnown <ldisc> names:\n"), out);
28e91b83 SK	222	print_table(out, ld_discs);
158e4182 KZ	223	fputs(USAGE_SEPARATOR, out);
158e4182 KZ	224
28e91b83 SK	225	fputs(_("\nKnown <iflag> names:\n"), out);
28e91b83 SK	226	print_table(out, ld_iflags);
158e4182	227
f45f3ec3	228	printf(USAGE_MAN_TAIL("ldattach(8)"));
5118d1be	229	exit(EXIT_SUCCESS);
1e8d11c4 TS	230	}
1e8d11c4 TS	231
f8132752 KZ	232	static int my_cfsetspeed(struct termios *ts, int speed)
	233	{
	234	/* Standard speeds
	235	* -- cfsetspeed() is able to translate number to Bxxx constants
	236	*/
	237	if (cfsetspeed(ts, speed) == 0)
	238	return 0;
	239
	240	/* Nonstandard speeds
28e91b83 SK	241	* -- we have to bypass glibc and set the speed manually (because glibc
28e91b83 SK	242	* checks for speed and supports Bxxx bit rates only)...
f8132752	243	*/
963413a1	244	#if _HAVE_STRUCT_TERMIOS_C_ISPEED
28e91b83	245	# define BOTHER 0010000 /* non standard rate */
f8132752 KZ	246	dbg("using non-standard speeds");
	247	ts->c_ospeed = ts->c_ispeed = speed;
	248	ts->c_cflag &= ~CBAUD;
	249	ts->c_cflag \|= BOTHER;
	250	return 0;
	251	#else
	252	return -1;
	253	#endif
	254	}
	255
8596f639 KZ	256	static void handler(int s)
8596f639 KZ	257	{
31f85fce	258	dbg("got SIG %i -> exiting", s);
8596f639 KZ	259	exit(EXIT_SUCCESS);
	260	}
	261
	262	static void gsm0710_set_conf(int tty_fd)
	263	{
	264	struct gsm_config c;
	265
	266	/* Add by guowenxue */
	267	/* get n_gsm configuration */
	268	ioctl(tty_fd, GSMIOC_GETCONF, &c);
	269	/* we are initiator and need encoding 0 (basic) */
	270	c.initiator = 1;
	271	c.encapsulation = 0;
	272	/* our modem defaults to a maximum size of 127 bytes */
	273	c.mru = 127;
	274	c.mtu = 127;
	275	/* set the new configuration */
	276	ioctl(tty_fd, GSMIOC_SETCONF, &c);
	277	/* Add by guowenxue end*/
	278	}
	279
1e8d11c4 TS	280	int main(int argc, char **argv)
1e8d11c4 TS	281	{
28e91b83 SK	282	int tty_fd;
	283	struct termios ts;
	284	int speed = 0, bits = '-', parity = '-', stop = '-';
	285	int set_iflag = 0, clr_iflag = 0;
	286	int ldisc;
	287	int optc;
28e91b83	288	char *dev;
8596f639 KZ	289	int intropause = 1;
	290	char *introparm = NULL;
	291
28e91b83 SK	292	static const struct option opttbl[] = {
	293	{"speed", required_argument, NULL, 's'},
	294	{"sevenbits", no_argument, NULL, '7'},
	295	{"eightbits", no_argument, NULL, '8'},
	296	{"noparity", no_argument, NULL, 'n'},
	297	{"evenparity", no_argument, NULL, 'e'},
	298	{"oddparity", no_argument, NULL, 'o'},
	299	{"onestopbit", no_argument, NULL, '1'},
	300	{"twostopbits", no_argument, NULL, '2'},
	301	{"iflag", required_argument, NULL, 'i'},
	302	{"help", no_argument, NULL, 'h'},
	303	{"version", no_argument, NULL, 'V'},
	304	{"debug", no_argument, NULL, 'd'},
8596f639 KZ	305	{"intro-command", no_argument, NULL, 'c'},
8596f639 KZ	306	{"pause", no_argument, NULL, 'p'},
28e91b83 SK	307	{NULL, 0, NULL, 0}
	308	};
	309
8596f639 KZ	310	signal(SIGKILL, handler);
	311	signal(SIGINT, handler);
	312
28e91b83 SK	313	setlocale(LC_ALL, "");
	314	bindtextdomain(PACKAGE, LOCALEDIR);
	315	textdomain(PACKAGE);
25b7045e	316	close_stdout_atexit();
28e91b83 SK	317
28e91b83 SK	318	/* parse options */
28e91b83	319	if (argc == 0)
5118d1be RM	320	errx(EXIT_FAILURE, _("bad usage"));
5118d1be RM	321
28e91b83	322	while ((optc =
8596f639	323	getopt_long(argc, argv, "dhV78neo12s:i:c:p:", opttbl,
28e91b83 SK	324	NULL)) >= 0) {
	325	switch (optc) {
	326	case 'd':
3a134012	327	debug = 1;
28e91b83 SK	328	break;
	329	case '1':
	330	case '2':
	331	stop = optc;
	332	break;
	333	case '7':
	334	case '8':
	335	bits = optc;
	336	break;
	337	case 'n':
	338	case 'e':
	339	case 'o':
	340	parity = optc;
	341	break;
	342	case 's':
20a39982	343	speed = strtos32_or_err(optarg, _("invalid speed argument"));
28e91b83	344	break;
8596f639 KZ	345	case 'p':
	346	intropause = strtou32_or_err(optarg, _("invalid pause argument"));
	347	if (intropause > 10)
	348	errx(EXIT_FAILURE, "invalid pause: %s", optarg);
	349	break;
	350	case 'c':
	351	introparm = optarg;
	352	break;
28e91b83 SK	353	case 'i':
	354	parse_iflag(optarg, &set_iflag, &clr_iflag);
	355	break;
2c308875	356
28e91b83	357	case 'V':
2c308875	358	print_version(EXIT_SUCCESS);
28e91b83	359	case 'h':
5118d1be	360	usage();
28e91b83	361	default:
677ec86c	362	errtryhelp(EXIT_FAILURE);
28e91b83 SK	363	}
	364	}
	365
5118d1be RM	366	if (argc - optind != 2) {
	367	warnx(_("not enough arguments"));
	368	errtryhelp(EXIT_FAILURE);
	369	}
28e91b83 SK	370	/* parse line discipline specification */
28e91b83 SK	371	ldisc = lookup_table(ld_discs, argv[optind]);
7b2d3de4	372	if (ldisc < 0)
20a39982	373	ldisc = strtos32_or_err(argv[optind], _("invalid line discipline argument"));
28e91b83	374
5687494a TS	375	/* ldisc specific option settings */
	376	if (ldisc == N_GIGASET_M101) {
	377	/* device specific defaults for line speed and data format */
158e4182 KZ	378	if (speed == 0)
	379	speed = 115200;
	380	if (bits == '-')
	381	bits = '8';
	382	if (parity == '-')
	383	parity = 'n';
	384	if (stop == '-')
	385	stop = '1';
5687494a TS	386	}
5687494a TS	387
28e91b83 SK	388	/* open device */
	389	dev = argv[optind + 1];
	390	if ((tty_fd = open(dev, O_RDWR \| O_NOCTTY)) < 0)
	391	err(EXIT_FAILURE, _("cannot open %s"), dev);
	392	if (!isatty(tty_fd))
	393	errx(EXIT_FAILURE, _("%s is not a serial line"), dev);
	394
	395	dbg("opened %s", dev);
	396
	397	/* set line speed and format */
	398	if (tcgetattr(tty_fd, &ts) < 0)
	399	err(EXIT_FAILURE,
	400	_("cannot get terminal attributes for %s"), dev);
	401	cfmakeraw(&ts);
	402	if (speed && my_cfsetspeed(&ts, speed) < 0)
	403	errx(EXIT_FAILURE, _("speed %d unsupported"), speed);
	404
	405	switch (stop) {
1e8d11c4	406	case '1':
28e91b83 SK	407	ts.c_cflag &= ~CSTOPB;
28e91b83 SK	408	break;
1e8d11c4	409	case '2':
28e91b83 SK	410	ts.c_cflag \|= CSTOPB;
28e91b83 SK	411	break;
ba64bbd2 SK	412	case '-':
	413	break;
	414	default:
	415	abort();
28e91b83 SK	416	}
28e91b83 SK	417	switch (bits) {
1e8d11c4	418	case '7':
28e91b83 SK	419	ts.c_cflag = (ts.c_cflag & ~CSIZE) \| CS7;
28e91b83 SK	420	break;
1e8d11c4	421	case '8':
28e91b83 SK	422	ts.c_cflag = (ts.c_cflag & ~CSIZE) \| CS8;
28e91b83 SK	423	break;
ba64bbd2 SK	424	case '-':
	425	break;
	426	default:
	427	abort();
28e91b83 SK	428	}
28e91b83 SK	429	switch (parity) {
1e8d11c4	430	case 'n':
28e91b83 SK	431	ts.c_cflag &= ~(PARENB \| PARODD);
28e91b83 SK	432	break;
1e8d11c4	433	case 'e':
28e91b83 SK	434	ts.c_cflag \|= PARENB;
	435	ts.c_cflag &= ~PARODD;
	436	break;
1e8d11c4	437	case 'o':
28e91b83 SK	438	ts.c_cflag \|= (PARENB \| PARODD);
28e91b83 SK	439	break;
ba64bbd2 SK	440	case '-':
	441	break;
	442	default:
	443	abort();
1e8d11c4	444	}
28e91b83 SK	445
	446	ts.c_cflag \|= CREAD; /* just to be on the safe side */
	447	ts.c_iflag \|= set_iflag;
	448	ts.c_iflag &= ~clr_iflag;
	449
	450	if (tcsetattr(tty_fd, TCSAFLUSH, &ts) < 0)
	451	err(EXIT_FAILURE,
	452	_("cannot set terminal attributes for %s"), dev);
	453
	454	dbg("set to raw %d %c%c%c: cflag=0x%x",
	455	speed, bits, parity, stop, ts.c_cflag);
	456
8596f639 KZ	457	if (introparm && *introparm)
	458	{
	459	dbg("intro command is '%s'", introparm);
	460	if (write_all(tty_fd, introparm, strlen(introparm)) != 0)
	461	err(EXIT_FAILURE,
	462	_("cannot write intro command to %s"), dev);
	463
	464	if (intropause) {
	465	dbg("waiting for %d seconds", intropause);
	466	sleep(intropause);
	467	}
	468	}
	469
5687494a	470	/* Attach the line discipline. */
28e91b83 SK	471	if (ioctl(tty_fd, TIOCSETD, &ldisc) < 0)
	472	err(EXIT_FAILURE, _("cannot set line discipline"));
	473
	474	dbg("line discipline set to %d", ldisc);
	475
5687494a	476	/* ldisc specific post-attach actions */
8596f639 KZ	477	if (ldisc == N_GSM0710)
	478	gsm0710_set_conf(tty_fd);
	479
28e91b83 SK	480	/* Go into background if not in debug mode. */
	481	if (!debug && daemon(0, 0) < 0)
	482	err(EXIT_FAILURE, _("cannot daemonize"));
	483
	484	/* Sleep to keep the line discipline active. */
	485	pause();
	486
	487	exit(EXIT_SUCCESS);
1e8d11c4	488	}