297 lines
7.0 KiB
C
297 lines
7.0 KiB
C
/*
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* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
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* Copyright (c) 1996-2018 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "defs.h"
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/*
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* The C library's definition of struct termios might differ from
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* the kernel one, and we need to use the kernel layout.
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*/
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#include <linux/termios.h>
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#include "xlat/tcxonc_options.h"
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#include "xlat/tcflsh_options.h"
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#include "xlat/baud_options.h"
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#include "xlat/modem_flags.h"
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static void
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decode_termios(struct tcb *const tcp, const kernel_ulong_t addr)
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{
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struct termios tios;
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tprints(", ");
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if (umove_or_printaddr(tcp, addr, &tios))
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return;
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if (abbrev(tcp)) {
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tprints("{");
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printxval(baud_options, tios.c_cflag & CBAUD, "B???");
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tprintf(" %sopost %sisig %sicanon %secho ...}",
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(tios.c_oflag & OPOST) ? "" : "-",
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(tios.c_lflag & ISIG) ? "" : "-",
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(tios.c_lflag & ICANON) ? "" : "-",
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(tios.c_lflag & ECHO) ? "" : "-");
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return;
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}
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tprintf("{c_iflags=%#lx, c_oflags=%#lx, ",
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(long) tios.c_iflag, (long) tios.c_oflag);
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tprintf("c_cflags=%#lx, c_lflags=%#lx, ",
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(long) tios.c_cflag, (long) tios.c_lflag);
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tprintf("c_line=%u, ", tios.c_line);
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if (!(tios.c_lflag & ICANON))
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tprintf("c_cc[VMIN]=%d, c_cc[VTIME]=%d, ",
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tios.c_cc[VMIN], tios.c_cc[VTIME]);
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tprints("c_cc=");
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print_quoted_string((char *) tios.c_cc, NCCS, QUOTE_FORCE_HEX);
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tprints("}");
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}
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static void
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decode_termio(struct tcb *const tcp, const kernel_ulong_t addr)
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{
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struct termio tio;
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int i;
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tprints(", ");
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if (umove_or_printaddr(tcp, addr, &tio))
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return;
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if (abbrev(tcp)) {
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tprints("{");
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printxval(baud_options, tio.c_cflag & CBAUD, "B???");
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tprintf(" %sopost %sisig %sicanon %secho ...}",
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(tio.c_oflag & OPOST) ? "" : "-",
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(tio.c_lflag & ISIG) ? "" : "-",
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(tio.c_lflag & ICANON) ? "" : "-",
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(tio.c_lflag & ECHO) ? "" : "-");
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return;
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}
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tprintf("{c_iflags=%#lx, c_oflags=%#lx, ",
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(long) tio.c_iflag, (long) tio.c_oflag);
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tprintf("c_cflags=%#lx, c_lflags=%#lx, ",
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(long) tio.c_cflag, (long) tio.c_lflag);
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tprintf("c_line=%u, ", tio.c_line);
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#ifdef _VMIN
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if (!(tio.c_lflag & ICANON))
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tprintf("c_cc[_VMIN]=%d, c_cc[_VTIME]=%d, ",
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tio.c_cc[_VMIN], tio.c_cc[_VTIME]);
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#else /* !_VMIN */
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if (!(tio.c_lflag & ICANON))
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tprintf("c_cc[VMIN]=%d, c_cc[VTIME]=%d, ",
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tio.c_cc[VMIN], tio.c_cc[VTIME]);
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#endif /* !_VMIN */
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tprints("c_cc=\"");
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for (i = 0; i < NCC; i++)
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tprintf("\\x%02x", tio.c_cc[i]);
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tprints("\"}");
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}
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static void
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decode_winsize(struct tcb *const tcp, const kernel_ulong_t addr)
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{
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struct winsize ws;
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tprints(", ");
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if (umove_or_printaddr(tcp, addr, &ws))
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return;
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tprintf("{ws_row=%d, ws_col=%d, ws_xpixel=%d, ws_ypixel=%d}",
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ws.ws_row, ws.ws_col, ws.ws_xpixel, ws.ws_ypixel);
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}
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#ifdef TIOCGSIZE
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static void
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decode_ttysize(struct tcb *const tcp, const kernel_ulong_t addr)
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{
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struct ttysize ts;
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tprints(", ");
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if (umove_or_printaddr(tcp, addr, &ts))
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return;
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tprintf("{ts_lines=%d, ts_cols=%d}",
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ts.ts_lines, ts.ts_cols);
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}
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#endif
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static void
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decode_modem_flags(struct tcb *const tcp, const kernel_ulong_t addr)
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{
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int i;
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tprints(", ");
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if (umove_or_printaddr(tcp, addr, &i))
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return;
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tprints("[");
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printflags(modem_flags, i, "TIOCM_???");
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tprints("]");
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}
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int
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term_ioctl(struct tcb *const tcp, const unsigned int code,
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const kernel_ulong_t arg)
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{
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switch (code) {
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/* struct termios */
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case TCGETS:
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#ifdef TCGETS2
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case TCGETS2:
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#endif
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case TIOCGLCKTRMIOS:
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if (entering(tcp))
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return 0;
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ATTRIBUTE_FALLTHROUGH;
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case TCSETS:
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#ifdef TCSETS2
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case TCSETS2:
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#endif
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case TCSETSW:
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#ifdef TCSETSW2
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case TCSETSW2:
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#endif
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case TCSETSF:
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#ifdef TCSETSF2
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case TCSETSF2:
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#endif
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case TIOCSLCKTRMIOS:
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decode_termios(tcp, arg);
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break;
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/* struct termio */
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case TCGETA:
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if (entering(tcp))
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return 0;
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ATTRIBUTE_FALLTHROUGH;
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case TCSETA:
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case TCSETAW:
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case TCSETAF:
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decode_termio(tcp, arg);
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break;
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/* struct winsize */
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case TIOCGWINSZ:
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if (entering(tcp))
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return 0;
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ATTRIBUTE_FALLTHROUGH;
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case TIOCSWINSZ:
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decode_winsize(tcp, arg);
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break;
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/* struct ttysize */
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#ifdef TIOCGSIZE
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case TIOCGSIZE:
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if (entering(tcp))
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return 0;
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ATTRIBUTE_FALLTHROUGH;
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case TIOCSSIZE:
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decode_ttysize(tcp, arg);
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break;
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#endif
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/* ioctls with a direct decodable arg */
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case TCXONC:
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tprints(", ");
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printxval64(tcxonc_options, arg, "TC???");
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break;
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case TCFLSH:
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tprints(", ");
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printxval64(tcflsh_options, arg, "TC???");
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break;
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case TCSBRK:
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case TCSBRKP:
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case TIOCSCTTY:
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tprintf(", %d", (int) arg);
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break;
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/* ioctls with an indirect parameter displayed as modem flags */
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case TIOCMGET:
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if (entering(tcp))
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return 0;
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ATTRIBUTE_FALLTHROUGH;
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case TIOCMBIS:
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case TIOCMBIC:
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case TIOCMSET:
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decode_modem_flags(tcp, arg);
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break;
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/* ioctls with an indirect parameter displayed in decimal */
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case TIOCGPGRP:
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case TIOCGSID:
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case TIOCGETD:
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case TIOCGSOFTCAR:
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case TIOCGPTN:
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case FIONREAD:
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case TIOCOUTQ:
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#ifdef TIOCGEXCL
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case TIOCGEXCL:
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#endif
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#ifdef TIOCGDEV
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case TIOCGDEV:
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#endif
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if (entering(tcp))
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return 0;
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ATTRIBUTE_FALLTHROUGH;
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case TIOCSPGRP:
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case TIOCSETD:
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case FIONBIO:
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case FIOASYNC:
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case TIOCPKT:
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case TIOCSSOFTCAR:
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case TIOCSPTLCK:
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tprints(", ");
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printnum_int(tcp, arg, "%d");
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break;
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/* ioctls with an indirect parameter displayed as a char */
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case TIOCSTI:
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tprints(", ");
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printstrn(tcp, arg, 1);
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break;
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/* ioctls with no parameters */
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case TIOCSBRK:
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case TIOCCBRK:
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case TIOCCONS:
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case TIOCNOTTY:
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case TIOCEXCL:
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case TIOCNXCL:
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case FIOCLEX:
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case FIONCLEX:
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#ifdef TIOCVHANGUP
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case TIOCVHANGUP:
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#endif
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#ifdef TIOCSSERIAL
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case TIOCSSERIAL:
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#endif
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break;
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/* ioctls which are unknown */
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default:
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return RVAL_DECODED;
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}
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return RVAL_IOCTL_DECODED;
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}
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