ref: 1d891d163e814a93ee5346cf05b4fac297bf3a5c
dir: /sys/src/ape/lib/ap/plan9/tcgetattr.c/
#include <stdlib.h> #include <string.h> #include <stdio.h> #include <sys/types.h> #include <termios.h> #include <unistd.h> #include <fcntl.h> #include <errno.h> #include "sys9.h" #include "lib.h" #include "dir.h" #define CESC '\\' #define CINTR 0177 /* DEL */ #define CQUIT 034 /* FS, cntl | */ #define CERASE 010 /* BS */ #define CKILL 025 /* cntl u */ #define CEOF 04 /* cntl d */ #define CSTART 021 /* cntl q */ #define CSTOP 023 /* cntl s */ #define CSWTCH 032 /* cntl z */ #define CEOL 000 #define CNSWTCH 0 static int isptty(int fd) { Dir *d; int rv; if((d = _dirfstat(fd)) == nil) return 0; rv = (strncmp(d->name, "ptty", 4) == 0); free(d); return rv; } int tcgetattr(int fd, struct termios *t) { int n; char buf[60]; if(!isptty(fd)) { if(isatty(fd)) { /* If there is no emulation return sensible defaults */ t->c_iflag = ISTRIP|ICRNL|IXON|IXOFF; t->c_oflag = OPOST|TAB3|ONLCR; t->c_cflag = B9600; t->c_lflag = ISIG|ICANON|ECHO|ECHOE|ECHOK; t->c_cc[VINTR] = CINTR; t->c_cc[VQUIT] = CQUIT; t->c_cc[VERASE] = CERASE; t->c_cc[VKILL] = CKILL; t->c_cc[VEOF] = CEOF; t->c_cc[VEOL] = CEOL; t->c_cc[VSTART] = CSTART; t->c_cc[VSTOP] = CSTOP; return 0; } else { errno = ENOTTY; return -1; } } if(_SEEK(fd, -2, 0) != -2) { _syserrno(); return -1; } n = _READ(fd, buf, 57); if(n < 0) { _syserrno(); return -1; } t->c_iflag = strtoul(buf+4, 0, 16); t->c_oflag = strtoul(buf+9, 0, 16); t->c_cflag = strtoul(buf+14, 0, 16); t->c_lflag = strtoul(buf+19, 0, 16); for(n = 0; n < NCCS; n++) t->c_cc[n] = strtoul(buf+24+(n*3), 0, 16); return 0; } /* BUG: ignores optional actions */ int tcsetattr(int fd, int optactions, const struct termios *t) { int n, i; char buf[100]; if(!isptty(fd)) { if(!isatty(fd)) { errno = ENOTTY; return -1; } else return 0; } n = sprintf(buf, "IOW %4.4x %4.4x %4.4x %4.4x ", t->c_iflag, t->c_oflag, t->c_cflag, t->c_lflag); for(i = 0; i < NCCS; i++) n += sprintf(buf+n, "%2.2x ", t->c_cc[i]); if(_SEEK(fd, -2, 0) != -2) { _syserrno(); return -1; } n = _WRITE(fd, buf, n); if(n < 0) { _syserrno(); return -1; } return 0; } int tcsetpgrp(int fd, pid_t pgrpid) { int n; char buf[30]; if(!isptty(fd)) { if(!isatty(fd)) { errno = ENOTTY; return -1; } else return 0; } n = sprintf(buf, "IOW note %d", pgrpid); if(_SEEK(fd, -2, 0) != -2) { _syserrno(); return -1; } n = _WRITE(fd, buf, n); if(n < 0) { _syserrno(); return -1; } return 0; } pid_t tcgetpgrp(int fd) { int n; pid_t pgrp; char buf[100]; if(!isptty(fd)) { errno = ENOTTY; return -1; } if(_SEEK(fd, -2, 0) != -2) { _syserrno(); return -1; } n = _READ(fd, buf, sizeof(buf)); if(n < 0) { _syserrno(); return -1; } pgrp = atoi(buf+24+(NCCS*3)); return pgrp; } /* should do a better job here */ int tcdrain(int) { errno = ENOTTY; return -1; } int tcflush(int, int) { errno = ENOTTY; return -1; } int tcflow(int, int) { errno = ENOTTY; return -1; } int tcsendbreak(int) { errno = ENOTTY; return -1; }