fa325e9b42
Remote whitespace at the ends of lines. Remove blank lines from the ends of files. Change modes on source files so that they are not executable. Signed-off-by: Dan Cross <cross@gajendra.net>
86 lines
1.5 KiB
C
86 lines
1.5 KiB
C
#include <u.h>
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#include <termios.h>
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#include <stropts.h>
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#include <signal.h>
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#include <libc.h>
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#include "term.h"
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#define debug 0
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int
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getpts(int fd[], char *slave)
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{
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void (*f)(int);
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int r;
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fd[1] = open("/dev/ptmx", ORDWR);
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f = signal(SIGCLD, SIG_DFL);
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r = grantpt(fd[1]);
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signal(SIGCLD, f);
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if(r < 0 || unlockpt(fd[1]) < 0)
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return -1;
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fchmod(fd[1], 0622);
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strcpy(slave, ptsname(fd[1]));
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fd[0] = open(slave, ORDWR);
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if(fd[0] < 0)
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sysfatal("open %s: %r\n", slave);
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/* set up the right streams modules for a tty */
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ioctl(fd[0], I_PUSH, "ptem"); /* push ptem */
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ioctl(fd[0], I_PUSH, "ldterm"); /* push ldterm */
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return 0;
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}
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int
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childpty(int fd[], char *slave)
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{
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int sfd;
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close(fd[1]);
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setsid();
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sfd = open(slave, ORDWR);
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if(sfd < 0)
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sysfatal("open %s: %r\n", slave);
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return sfd;
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}
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struct winsize ows;
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void
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updatewinsize(int row, int col, int dx, int dy)
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{
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struct winsize ws;
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ws.ws_row = row;
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ws.ws_col = col;
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ws.ws_xpixel = dx;
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ws.ws_ypixel = dy;
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if(ws.ws_row != ows.ws_row || ws.ws_col != ows.ws_col)
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if(ioctl(rcfd, TIOCSWINSZ, &ws) < 0)
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fprint(2, "ioctl TIOCSWINSZ: %r\n");
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ows = ws;
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}
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static struct termios ttmode;
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int
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isecho(int fd)
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{
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if(tcgetattr(fd, &ttmode) < 0)
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fprint(2, "tcgetattr: %r\n");
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if(debug) fprint(2, "israw %c%c\n",
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ttmode.c_lflag&ICANON ? 'c' : '-',
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ttmode.c_lflag&ECHO ? 'e' : '-');
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return (ttmode.c_lflag&ICANON && ttmode.c_lflag&ECHO);
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}
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int
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getintr(int fd)
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{
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if(tcgetattr(fd, &ttmode) < 0)
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return 0x7F;
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return ttmode.c_cc[VINTR];
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}
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