| 1 | /* Copyright (C) 1991-2022 Free Software Foundation, Inc. |
|---|---|
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, see |
| 16 | <https://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #include <errno.h> |
| 19 | #include <stddef.h> |
| 20 | #include <termios.h> |
| 21 | |
| 22 | static int bad_speed (speed_t speed); |
| 23 | |
| 24 | /* Set the state of FD to *TERMIOS_P. */ |
| 25 | int |
| 26 | tcsetattr (int fd, int optional_actions, const struct termios *termios_p) |
| 27 | { |
| 28 | if (fd < 0) |
| 29 | { |
| 30 | __set_errno (EBADF); |
| 31 | return -1; |
| 32 | } |
| 33 | if (termios_p == NULL) |
| 34 | { |
| 35 | __set_errno (EINVAL); |
| 36 | return -1; |
| 37 | } |
| 38 | switch (optional_actions) |
| 39 | { |
| 40 | case TCSANOW: |
| 41 | case TCSADRAIN: |
| 42 | case TCSAFLUSH: |
| 43 | break; |
| 44 | default: |
| 45 | __set_errno (EINVAL); |
| 46 | return -1; |
| 47 | } |
| 48 | |
| 49 | if (bad_speed(speed: termios_p->__ospeed) |
| 50 | || bad_speed(speed: termios_p->__ispeed == 0 |
| 51 | ? termios_p->__ospeed : termios_p->__ispeed)) |
| 52 | { |
| 53 | __set_errno (EINVAL); |
| 54 | return -1; |
| 55 | } |
| 56 | |
| 57 | __set_errno (ENOSYS); |
| 58 | return -1; |
| 59 | } |
| 60 | libc_hidden_def (tcsetattr) |
| 61 | |
| 62 | /* Strychnine checking. */ |
| 63 | static int |
| 64 | bad_speed (speed_t speed) |
| 65 | { |
| 66 | switch (speed) |
| 67 | { |
| 68 | case B0: |
| 69 | case B50: |
| 70 | case B75: |
| 71 | case B110: |
| 72 | case B134: |
| 73 | case B150: |
| 74 | case B200: |
| 75 | case B300: |
| 76 | case B600: |
| 77 | case B1200: |
| 78 | case B1800: |
| 79 | case B2400: |
| 80 | case B4800: |
| 81 | case B9600: |
| 82 | case B19200: |
| 83 | case B38400: |
| 84 | case B57600: |
| 85 | case B115200: |
| 86 | case B230400: |
| 87 | case B460800: |
| 88 | case B500000: |
| 89 | case B576000: |
| 90 | case B921600: |
| 91 | case B1000000: |
| 92 | case B1152000: |
| 93 | case B1500000: |
| 94 | case B2000000: |
| 95 | case B2500000: |
| 96 | case B3000000: |
| 97 | case B3500000: |
| 98 | case B4000000: |
| 99 | return 0; |
| 100 | default: |
| 101 | return 1; |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | |
| 106 | stub_warning (tcsetattr) |
| 107 |