term.c - platform/external/strace - Gitiles

 /*
  * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
  * Copyright (c) 1996-2017 The strace developers.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. The name of the author may not be used to endorse or promote products
  *    derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 #include "defs.h"
 /*
  * The C library's definition of struct termios might differ from
  * the kernel one, and we need to use the kernel layout.
  */
 #include <linux/termios.h>

 #include "xlat/tcxonc_options.h"
 #include "xlat/tcflsh_options.h"
 #include "xlat/baud_options.h"
 #include "xlat/modem_flags.h"

 static void
 decode_termios(struct tcb *const tcp, const kernel_ulong_t addr)
 {
 	struct termios tios;
 	int i;

 	tprints(", ");
 	if (umove_or_printaddr(tcp, addr, &tios))
 		return;
 	if (abbrev(tcp)) {
 		tprints("{");
 		printxval(baud_options, tios.c_cflag & CBAUD, "B???");
 		tprintf(" %sopost %sisig %sicanon %secho ...}",
 			(tios.c_oflag & OPOST) ? "" : "-",
 			(tios.c_lflag & ISIG) ? "" : "-",
 			(tios.c_lflag & ICANON) ? "" : "-",
 			(tios.c_lflag & ECHO) ? "" : "-");
 		return;
 	}
 	tprintf("{c_iflags=%#lx, c_oflags=%#lx, ",
 		(long) tios.c_iflag, (long) tios.c_oflag);
 	tprintf("c_cflags=%#lx, c_lflags=%#lx, ",
 		(long) tios.c_cflag, (long) tios.c_lflag);
 	tprintf("c_line=%u, ", tios.c_line);
 	if (!(tios.c_lflag & ICANON))
 		tprintf("c_cc[VMIN]=%d, c_cc[VTIME]=%d, ",
 			tios.c_cc[VMIN], tios.c_cc[VTIME]);
 	tprints("c_cc=\"");
 	for (i = 0; i < NCCS; i++)
 		tprintf("\\x%02x", tios.c_cc[i]);
 	tprints("\"}");
 }

 static void
 decode_termio(struct tcb *const tcp, const kernel_ulong_t addr)
 {
 	struct termio tio;
 	int i;

 	tprints(", ");
 	if (umove_or_printaddr(tcp, addr, &tio))
 		return;
 	if (abbrev(tcp)) {
 		tprints("{");
 		printxval(baud_options, tio.c_cflag & CBAUD, "B???");
 		tprintf(" %sopost %sisig %sicanon %secho ...}",
 			(tio.c_oflag & OPOST) ? "" : "-",
 			(tio.c_lflag & ISIG) ? "" : "-",
 			(tio.c_lflag & ICANON) ? "" : "-",
 			(tio.c_lflag & ECHO) ? "" : "-");
 		return;
 	}
 	tprintf("{c_iflags=%#lx, c_oflags=%#lx, ",
 		(long) tio.c_iflag, (long) tio.c_oflag);
 	tprintf("c_cflags=%#lx, c_lflags=%#lx, ",
 		(long) tio.c_cflag, (long) tio.c_lflag);
 	tprintf("c_line=%u, ", tio.c_line);
 #ifdef _VMIN
 	if (!(tio.c_lflag & ICANON))
 		tprintf("c_cc[_VMIN]=%d, c_cc[_VTIME]=%d, ",
 			tio.c_cc[_VMIN], tio.c_cc[_VTIME]);
 #else /* !_VMIN */
 	if (!(tio.c_lflag & ICANON))
 		tprintf("c_cc[VMIN]=%d, c_cc[VTIME]=%d, ",
 			tio.c_cc[VMIN], tio.c_cc[VTIME]);
 #endif /* !_VMIN */
 	tprints("c_cc=\"");
 	for (i = 0; i < NCC; i++)
 		tprintf("\\x%02x", tio.c_cc[i]);
 	tprints("\"}");
 }

 static void
 decode_winsize(struct tcb *const tcp, const kernel_ulong_t addr)
 {
 	struct winsize ws;

 	tprints(", ");
 	if (umove_or_printaddr(tcp, addr, &ws))
 		return;
 	tprintf("{ws_row=%d, ws_col=%d, ws_xpixel=%d, ws_ypixel=%d}",
 		ws.ws_row, ws.ws_col, ws.ws_xpixel, ws.ws_ypixel);
 }

 #ifdef TIOCGSIZE
 static void
 decode_ttysize(struct tcb *const tcp, const kernel_ulong_t addr)
 {
 	struct ttysize ts;

 	tprints(", ");
 	if (umove_or_printaddr(tcp, addr, &ts))
 		return;
 	tprintf("{ts_lines=%d, ts_cols=%d}",
 		ts.ts_lines, ts.ts_cols);
 }
 #endif

 static void
 decode_modem_flags(struct tcb *const tcp, const kernel_ulong_t addr)
 {
 	int i;

 	tprints(", ");
 	if (umove_or_printaddr(tcp, addr, &i))
 		return;
 	tprints("[");
 	printflags(modem_flags, i, "TIOCM_???");
 	tprints("]");
 }

 int
 term_ioctl(struct tcb *const tcp, const unsigned int code,
 	   const kernel_ulong_t arg)
 {
 	switch (code) {
 	/* struct termios */
 	case TCGETS:
 #ifdef TCGETS2
 	case TCGETS2:
 #endif
 	case TIOCGLCKTRMIOS:
 		if (entering(tcp))
 			return 0;
 	case TCSETS:
 #ifdef TCSETS2
 	case TCSETS2:
 #endif
 	case TCSETSW:
 #ifdef TCSETSW2
 	case TCSETSW2:
 #endif
 	case TCSETSF:
 #ifdef TCSETSF2
 	case TCSETSF2:
 #endif
 	case TIOCSLCKTRMIOS:
 		decode_termios(tcp, arg);
 		break;

 	/* struct termio */
 	case TCGETA:
 		if (entering(tcp))
 			return 0;
 	case TCSETA:
 	case TCSETAW:
 	case TCSETAF:
 		decode_termio(tcp, arg);
 		break;

 	/* struct winsize */
 	case TIOCGWINSZ:
 		if (entering(tcp))
 			return 0;
 	case TIOCSWINSZ:
 		decode_winsize(tcp, arg);
 		break;

 	/* struct ttysize */
 #ifdef TIOCGSIZE
 	case TIOCGSIZE:
 		if (entering(tcp))
 			return 0;
 	case TIOCSSIZE:
 		decode_ttysize(tcp, arg);
 		break;
 #endif

 	/* ioctls with a direct decodable arg */
 	case TCXONC:
 		tprints(", ");
 		printxval64(tcxonc_options, arg, "TC???");
 		break;
 	case TCFLSH:
 		tprints(", ");
 		printxval64(tcflsh_options, arg, "TC???");
 		break;
 	case TCSBRK:
 	case TCSBRKP:
 	case TIOCSCTTY:
 		tprintf(", %d", (int) arg);
 		break;

 	/* ioctls with an indirect parameter displayed as modem flags */
 	case TIOCMGET:
 		if (entering(tcp))
 			return 0;
 	case TIOCMBIS:
 	case TIOCMBIC:
 	case TIOCMSET:
 		decode_modem_flags(tcp, arg);
 		break;

 	/* ioctls with an indirect parameter displayed in decimal */
 	case TIOCGPGRP:
 	case TIOCGSID:
 	case TIOCGETD:
 	case TIOCGSOFTCAR:
 	case TIOCGPTN:
 	case FIONREAD:
 	case TIOCOUTQ:
 #ifdef TIOCGEXCL
 	case TIOCGEXCL:
 #endif
 #ifdef TIOCGDEV
 	case TIOCGDEV:
 #endif
 		if (entering(tcp))
 			return 0;
 	case TIOCSPGRP:
 	case TIOCSETD:
 	case FIONBIO:
 	case FIOASYNC:
 	case TIOCPKT:
 	case TIOCSSOFTCAR:
 	case TIOCSPTLCK:
 		tprints(", ");
 		printnum_int(tcp, arg, "%d");
 		break;

 	/* ioctls with an indirect parameter displayed as a char */
 	case TIOCSTI:
 		tprints(", ");
 		printstrn(tcp, arg, 1);
 		break;

 	/* ioctls with no parameters */

 	case TIOCSBRK:
 	case TIOCCBRK:
 	case TIOCCONS:
 	case TIOCNOTTY:
 	case TIOCEXCL:
 	case TIOCNXCL:
 	case FIOCLEX:
 	case FIONCLEX:
 #ifdef TIOCVHANGUP
 	case TIOCVHANGUP:
 #endif
 #ifdef TIOCSSERIAL
 	case TIOCSSERIAL:
 #endif
 		break;

 	/* ioctls which are unknown */

 	default:
 		return RVAL_DECODED;
 	}

 	return RVAL_DECODED | 1;
 }
	/*
	* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
	* Copyright (c) 1996-2017 The strace developers.
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. The name of the author may not be used to endorse or promote products
	* derived from this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#include "defs.h"
	/*
	* The C library's definition of struct termios might differ from
	* the kernel one, and we need to use the kernel layout.
	*/
	#include <linux/termios.h>

	#include "xlat/tcxonc_options.h"
	#include "xlat/tcflsh_options.h"
	#include "xlat/baud_options.h"
	#include "xlat/modem_flags.h"

	static void
	decode_termios(struct tcb *const tcp, const kernel_ulong_t addr)
	{
	struct termios tios;
	int i;

	tprints(", ");
	if (umove_or_printaddr(tcp, addr, &tios))
	return;
	if (abbrev(tcp)) {
	tprints("{");
	printxval(baud_options, tios.c_cflag & CBAUD, "B???");
	tprintf(" %sopost %sisig %sicanon %secho ...}",
	(tios.c_oflag & OPOST) ? "" : "-",
	(tios.c_lflag & ISIG) ? "" : "-",
	(tios.c_lflag & ICANON) ? "" : "-",
	(tios.c_lflag & ECHO) ? "" : "-");
	return;
	}
	tprintf("{c_iflags=%#lx, c_oflags=%#lx, ",
	(long) tios.c_iflag, (long) tios.c_oflag);
	tprintf("c_cflags=%#lx, c_lflags=%#lx, ",
	(long) tios.c_cflag, (long) tios.c_lflag);
	tprintf("c_line=%u, ", tios.c_line);
	if (!(tios.c_lflag & ICANON))
	tprintf("c_cc[VMIN]=%d, c_cc[VTIME]=%d, ",
	tios.c_cc[VMIN], tios.c_cc[VTIME]);
	tprints("c_cc=\"");
	for (i = 0; i < NCCS; i++)
	tprintf("\\x%02x", tios.c_cc[i]);
	tprints("\"}");
	}

	static void
	decode_termio(struct tcb *const tcp, const kernel_ulong_t addr)
	{
	struct termio tio;
	int i;

	tprints(", ");
	if (umove_or_printaddr(tcp, addr, &tio))
	return;
	if (abbrev(tcp)) {
	tprints("{");
	printxval(baud_options, tio.c_cflag & CBAUD, "B???");
	tprintf(" %sopost %sisig %sicanon %secho ...}",
	(tio.c_oflag & OPOST) ? "" : "-",
	(tio.c_lflag & ISIG) ? "" : "-",
	(tio.c_lflag & ICANON) ? "" : "-",
	(tio.c_lflag & ECHO) ? "" : "-");
	return;
	}
	tprintf("{c_iflags=%#lx, c_oflags=%#lx, ",
	(long) tio.c_iflag, (long) tio.c_oflag);
	tprintf("c_cflags=%#lx, c_lflags=%#lx, ",
	(long) tio.c_cflag, (long) tio.c_lflag);
	tprintf("c_line=%u, ", tio.c_line);
	#ifdef _VMIN
	if (!(tio.c_lflag & ICANON))
	tprintf("c_cc[_VMIN]=%d, c_cc[_VTIME]=%d, ",
	tio.c_cc[_VMIN], tio.c_cc[_VTIME]);
	#else /* !_VMIN */
	if (!(tio.c_lflag & ICANON))
	tprintf("c_cc[VMIN]=%d, c_cc[VTIME]=%d, ",
	tio.c_cc[VMIN], tio.c_cc[VTIME]);
	#endif /* !_VMIN */
	tprints("c_cc=\"");
	for (i = 0; i < NCC; i++)
	tprintf("\\x%02x", tio.c_cc[i]);
	tprints("\"}");
	}

	static void
	decode_winsize(struct tcb *const tcp, const kernel_ulong_t addr)
	{
	struct winsize ws;

	tprints(", ");
	if (umove_or_printaddr(tcp, addr, &ws))
	return;
	tprintf("{ws_row=%d, ws_col=%d, ws_xpixel=%d, ws_ypixel=%d}",
	ws.ws_row, ws.ws_col, ws.ws_xpixel, ws.ws_ypixel);
	}

	#ifdef TIOCGSIZE
	static void
	decode_ttysize(struct tcb *const tcp, const kernel_ulong_t addr)
	{
	struct ttysize ts;

	tprints(", ");
	if (umove_or_printaddr(tcp, addr, &ts))
	return;
	tprintf("{ts_lines=%d, ts_cols=%d}",
	ts.ts_lines, ts.ts_cols);
	}
	#endif

	static void
	decode_modem_flags(struct tcb *const tcp, const kernel_ulong_t addr)
	{
	int i;

	tprints(", ");
	if (umove_or_printaddr(tcp, addr, &i))
	return;
	tprints("[");
	printflags(modem_flags, i, "TIOCM_???");
	tprints("]");
	}

	int
	term_ioctl(struct tcb *const tcp, const unsigned int code,
	const kernel_ulong_t arg)
	{
	switch (code) {
	/* struct termios */
	case TCGETS:
	#ifdef TCGETS2
	case TCGETS2:
	#endif
	case TIOCGLCKTRMIOS:
	if (entering(tcp))
	return 0;
	case TCSETS:
	#ifdef TCSETS2
	case TCSETS2:
	#endif
	case TCSETSW:
	#ifdef TCSETSW2
	case TCSETSW2:
	#endif
	case TCSETSF:
	#ifdef TCSETSF2
	case TCSETSF2:
	#endif
	case TIOCSLCKTRMIOS:
	decode_termios(tcp, arg);
	break;

	/* struct termio */
	case TCGETA:
	if (entering(tcp))
	return 0;
	case TCSETA:
	case TCSETAW:
	case TCSETAF:
	decode_termio(tcp, arg);
	break;

	/* struct winsize */
	case TIOCGWINSZ:
	if (entering(tcp))
	return 0;
	case TIOCSWINSZ:
	decode_winsize(tcp, arg);
	break;

	/* struct ttysize */
	#ifdef TIOCGSIZE
	case TIOCGSIZE:
	if (entering(tcp))
	return 0;
	case TIOCSSIZE:
	decode_ttysize(tcp, arg);
	break;
	#endif

	/* ioctls with a direct decodable arg */
	case TCXONC:
	tprints(", ");
	printxval64(tcxonc_options, arg, "TC???");
	break;
	case TCFLSH:
	tprints(", ");
	printxval64(tcflsh_options, arg, "TC???");
	break;
	case TCSBRK:
	case TCSBRKP:
	case TIOCSCTTY:
	tprintf(", %d", (int) arg);
	break;

	/* ioctls with an indirect parameter displayed as modem flags */
	case TIOCMGET:
	if (entering(tcp))
	return 0;
	case TIOCMBIS:
	case TIOCMBIC:
	case TIOCMSET:
	decode_modem_flags(tcp, arg);
	break;

	/* ioctls with an indirect parameter displayed in decimal */
	case TIOCGPGRP:
	case TIOCGSID:
	case TIOCGETD:
	case TIOCGSOFTCAR:
	case TIOCGPTN:
	case FIONREAD:
	case TIOCOUTQ:
	#ifdef TIOCGEXCL
	case TIOCGEXCL:
	#endif
	#ifdef TIOCGDEV
	case TIOCGDEV:
	#endif
	if (entering(tcp))
	return 0;
	case TIOCSPGRP:
	case TIOCSETD:
	case FIONBIO:
	case FIOASYNC:
	case TIOCPKT:
	case TIOCSSOFTCAR:
	case TIOCSPTLCK:
	tprints(", ");
	printnum_int(tcp, arg, "%d");
	break;

	/* ioctls with an indirect parameter displayed as a char */
	case TIOCSTI:
	tprints(", ");
	printstrn(tcp, arg, 1);
	break;

	/* ioctls with no parameters */

	case TIOCSBRK:
	case TIOCCBRK:
	case TIOCCONS:
	case TIOCNOTTY:
	case TIOCEXCL:
	case TIOCNXCL:
	case FIOCLEX:
	case FIONCLEX:
	#ifdef TIOCVHANGUP
	case TIOCVHANGUP:
	#endif
	#ifdef TIOCSSERIAL
	case TIOCSSERIAL:
	#endif
	break;

	/* ioctls which are unknown */

	default:
	return RVAL_DECODED;
	}

	return RVAL_DECODED \| 1;
	}