bigbiff bigbiff | e60683a | 2013-02-22 20:55:50 -0500 | [diff] [blame] | 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 | */ |
| 7 | #ifndef UTIL_LINUX_TTYUTILS_H |
| 8 | #define UTIL_LINUX_TTYUTILS_H |
| 9 | |
| 10 | #include <stdlib.h> |
| 11 | #include <termios.h> |
| 12 | #include <limits.h> |
| 13 | #ifdef HAVE_SYS_IOCTL_H |
| 14 | #include <sys/ioctl.h> |
| 15 | #endif |
bigbiff | 7b4c7a6 | 2015-01-01 19:44:14 -0500 | [diff] [blame^] | 16 | #ifdef HAVE_SYS_TTYDEFAULTS_H |
| 17 | #include <sys/ttydefaults.h> |
| 18 | #endif |
bigbiff bigbiff | e60683a | 2013-02-22 20:55:50 -0500 | [diff] [blame] | 19 | |
| 20 | /* Some shorthands for control characters. */ |
| 21 | #define CTL(x) ((x) ^ 0100) /* Assumes ASCII dialect */ |
| 22 | #define CR CTL('M') /* carriage return */ |
| 23 | #define NL CTL('J') /* line feed */ |
| 24 | #define BS CTL('H') /* back space */ |
| 25 | #define DEL CTL('?') /* delete */ |
| 26 | |
| 27 | /* Defaults for line-editing etc. characters; you may want to change these. */ |
| 28 | #define DEF_ERASE DEL /* default erase character */ |
| 29 | #define DEF_INTR CTL('C') /* default interrupt character */ |
| 30 | #define DEF_QUIT CTL('\\') /* default quit char */ |
| 31 | #define DEF_KILL CTL('U') /* default kill char */ |
| 32 | #define DEF_EOF CTL('D') /* default EOF char */ |
| 33 | #define DEF_EOL 0 |
| 34 | #define DEF_SWITCH 0 /* default switch char */ |
| 35 | |
| 36 | /* Storage for things detected while the login name was read. */ |
| 37 | struct chardata { |
| 38 | int erase; /* erase character */ |
| 39 | int kill; /* kill character */ |
| 40 | int eol; /* end-of-line character */ |
| 41 | int parity; /* what parity did we see */ |
| 42 | int capslock; /* upper case without lower case */ |
| 43 | }; |
| 44 | |
| 45 | #define INIT_CHARDATA(ptr) do { \ |
| 46 | (ptr)->erase = DEF_ERASE; \ |
| 47 | (ptr)->kill = DEF_KILL; \ |
| 48 | (ptr)->eol = CTRL('r'); \ |
| 49 | (ptr)->parity = 0; \ |
| 50 | (ptr)->capslock = 0; \ |
| 51 | } while (0) |
| 52 | |
| 53 | extern int get_terminal_width(void); |
bigbiff | 7b4c7a6 | 2015-01-01 19:44:14 -0500 | [diff] [blame^] | 54 | extern int get_terminal_name(int fd, const char **path, const char **name, |
| 55 | const char **number); |
bigbiff bigbiff | e60683a | 2013-02-22 20:55:50 -0500 | [diff] [blame] | 56 | |
| 57 | #define UL_TTY_KEEPCFLAGS (1 << 1) |
| 58 | #define UL_TTY_UTF8 (1 << 2) |
| 59 | |
| 60 | static inline void reset_virtual_console(struct termios *tp, int flags) |
| 61 | { |
| 62 | /* Use defaults of <sys/ttydefaults.h> for base settings */ |
| 63 | tp->c_iflag |= TTYDEF_IFLAG; |
| 64 | tp->c_oflag |= TTYDEF_OFLAG; |
| 65 | tp->c_lflag |= TTYDEF_LFLAG; |
| 66 | |
| 67 | if ((flags & UL_TTY_KEEPCFLAGS) == 0) { |
| 68 | #ifdef CBAUD |
| 69 | tp->c_lflag &= ~CBAUD; |
| 70 | #endif |
| 71 | tp->c_cflag |= (B38400 | TTYDEF_CFLAG); |
| 72 | } |
| 73 | |
| 74 | /* Sane setting, allow eight bit characters, no carriage return delay |
| 75 | * the same result as `stty sane cr0 pass8' |
| 76 | */ |
bigbiff | 7b4c7a6 | 2015-01-01 19:44:14 -0500 | [diff] [blame^] | 77 | #ifndef IUCLC |
| 78 | # define IUCLC 0 |
| 79 | #endif |
| 80 | #ifndef NL0 |
| 81 | # define NL0 0 |
| 82 | #endif |
| 83 | #ifndef CR0 |
| 84 | # define CR0 0 |
| 85 | #endif |
| 86 | #ifndef BS0 |
| 87 | # define BS0 0 |
| 88 | #endif |
| 89 | #ifndef VT0 |
| 90 | # define VT0 0 |
| 91 | #endif |
| 92 | #ifndef FF0 |
| 93 | # define FF0 0 |
| 94 | #endif |
| 95 | #ifndef OLCUC |
| 96 | # define OLCUC 0 |
| 97 | #endif |
| 98 | #ifndef OFILL |
| 99 | # define OFILL 0 |
| 100 | #endif |
| 101 | #ifndef NLDLY |
| 102 | # define NLDLY 0 |
| 103 | #endif |
| 104 | #ifndef CRDLY |
| 105 | # define CRDLY 0 |
| 106 | #endif |
| 107 | #ifndef BSDLY |
| 108 | # define BSDLY 0 |
| 109 | #endif |
| 110 | #ifndef VTDLY |
| 111 | # define VTDLY 0 |
| 112 | #endif |
| 113 | #ifndef FFDLY |
| 114 | # define FFDLY 0 |
| 115 | #endif |
| 116 | |
bigbiff bigbiff | e60683a | 2013-02-22 20:55:50 -0500 | [diff] [blame] | 117 | tp->c_iflag |= (BRKINT | ICRNL | IMAXBEL); |
| 118 | tp->c_iflag &= ~(IGNBRK | INLCR | IGNCR | IXOFF | IUCLC | IXANY | ISTRIP); |
| 119 | tp->c_oflag |= (OPOST | ONLCR | NL0 | CR0 | TAB0 | BS0 | VT0 | FF0); |
| 120 | tp->c_oflag &= ~(OLCUC | OCRNL | ONOCR | ONLRET | OFILL | \ |
| 121 | NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
bigbiff | 7b4c7a6 | 2015-01-01 19:44:14 -0500 | [diff] [blame^] | 122 | tp->c_lflag |= (ISIG | ICANON | IEXTEN | ECHO|ECHOE|ECHOK|ECHOKE|ECHOCTL); |
| 123 | tp->c_lflag &= ~(ECHONL|ECHOPRT | NOFLSH | TOSTOP); |
bigbiff bigbiff | e60683a | 2013-02-22 20:55:50 -0500 | [diff] [blame] | 124 | |
| 125 | if ((flags & UL_TTY_KEEPCFLAGS) == 0) { |
| 126 | tp->c_cflag |= (CREAD | CS8 | HUPCL); |
| 127 | tp->c_cflag &= ~(PARODD | PARENB); |
| 128 | } |
| 129 | #ifdef OFDEL |
| 130 | tp->c_oflag &= ~OFDEL; |
| 131 | #endif |
| 132 | #ifdef XCASE |
| 133 | tp->c_lflag &= ~XCASE; |
| 134 | #endif |
| 135 | #ifdef IUTF8 |
| 136 | if (flags & UL_TTY_UTF8) |
| 137 | tp->c_iflag |= IUTF8; /* Set UTF-8 input flag */ |
| 138 | else |
| 139 | tp->c_iflag &= ~IUTF8; |
| 140 | #endif |
| 141 | /* VTIME and VMIN can overlap with VEOF and VEOL since they are |
| 142 | * only used for non-canonical mode. We just set the at the |
| 143 | * beginning, so nothing bad should happen. |
| 144 | */ |
| 145 | tp->c_cc[VTIME] = 0; |
| 146 | tp->c_cc[VMIN] = 1; |
| 147 | tp->c_cc[VINTR] = CINTR; |
| 148 | tp->c_cc[VQUIT] = CQUIT; |
| 149 | tp->c_cc[VERASE] = CERASE; /* ASCII DEL (0177) */ |
| 150 | tp->c_cc[VKILL] = CKILL; |
| 151 | tp->c_cc[VEOF] = CEOF; |
| 152 | #ifdef VSWTC |
| 153 | tp->c_cc[VSWTC] = _POSIX_VDISABLE; |
| 154 | #elif defined(VSWTCH) |
| 155 | tp->c_cc[VSWTCH] = _POSIX_VDISABLE; |
| 156 | #endif |
| 157 | tp->c_cc[VSTART] = CSTART; |
| 158 | tp->c_cc[VSTOP] = CSTOP; |
| 159 | tp->c_cc[VSUSP] = CSUSP; |
| 160 | tp->c_cc[VEOL] = _POSIX_VDISABLE; |
| 161 | tp->c_cc[VREPRINT] = CREPRINT; |
| 162 | tp->c_cc[VDISCARD] = CDISCARD; |
| 163 | tp->c_cc[VWERASE] = CWERASE; |
| 164 | tp->c_cc[VLNEXT] = CLNEXT; |
| 165 | tp->c_cc[VEOL2] = _POSIX_VDISABLE; |
| 166 | } |
| 167 | |
bigbiff bigbiff | e60683a | 2013-02-22 20:55:50 -0500 | [diff] [blame] | 168 | #endif /* UTIL_LINUX_TTYUTILS_H */ |