mirror of
git://projects.qi-hardware.com/wernermisc.git
synced 2024-11-15 08:50:38 +02:00
neocon.c: copyright update and whitespace cleanup
Now conforms to Linux kernel style.
This commit is contained in:
Werner Almesberger
parent
7d0683b335
commit
f3e1f925c4
495
neocon/neocon.c
495
neocon/neocon.c
@ -2,7 +2,8 @@
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* neocon.c - An interface for changing tty devices
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*
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* Copyright (C) 2007, 2008 by OpenMoko, Inc.
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* Written by Werner Almesberger <werner@openmoko.org>
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* Copyright 2011 by Werner Almesberger
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* Written by Werner Almesberger <werner@almesberger.net>
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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@ -46,86 +47,86 @@ static char escape = '~';
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static struct bps {
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speed_t speed;
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int bps;
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speed_t speed;
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int bps;
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} bps_tab[] = {
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{ B300, 300 },
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{ B1200, 1200 },
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{ B2400, 2400 },
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{ B9600, 9600 },
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{ B19200, 19200 },
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{ B38400, 38400 },
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{ B115200, 115200 },
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{ 0, 0 }
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{ B300, 300 },
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{ B1200, 1200 },
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{ B2400, 2400 },
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{ B9600, 9600 },
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{ B19200, 19200 },
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{ B38400, 38400 },
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{ B115200, 115200 },
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{ 0, 0 }
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};
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static speed_t bps_to_speed(int bps)
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{
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const struct bps *p;
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const struct bps *p;
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for (p = bps_tab; p->bps; p++)
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if (p->bps == bps)
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return p->speed;
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fprintf(stderr, "no such speed: %d bps\n", bps);
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exit(1);
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for (p = bps_tab; p->bps; p++)
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if (p->bps == bps)
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return p->speed;
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fprintf(stderr, "no such speed: %d bps\n", bps);
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exit(1);
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}
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static void make_raw(int fd, struct termios *old)
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{
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struct termios t;
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long flags;
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struct termios t;
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long flags;
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if (tcgetattr(fd, &t) < 0) {
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perror("tcgetattr");
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exit(1);
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}
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if (old)
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*old = t;
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cfmakeraw(&t);
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if (fd) {
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t.c_iflag &= ~(IXON | IXOFF);
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t.c_cflag |= CLOCAL;
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t.c_cflag &= ~CRTSCTS;
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if (cfsetispeed(&t, speed) < 0) {
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perror("cfsetispeed");
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exit(1);
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if (tcgetattr(fd, &t) < 0) {
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perror("tcgetattr");
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exit(1);
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}
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if (cfsetospeed(&t, speed) < 0) {
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perror("cfsetospeed");
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exit(1);
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if (old)
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*old = t;
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cfmakeraw(&t);
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if (fd) {
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t.c_iflag &= ~(IXON | IXOFF);
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t.c_cflag |= CLOCAL;
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t.c_cflag &= ~CRTSCTS;
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if (cfsetispeed(&t, speed) < 0) {
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perror("cfsetispeed");
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exit(1);
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}
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if (cfsetospeed(&t, speed) < 0) {
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perror("cfsetospeed");
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exit(1);
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}
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}
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if (tcsetattr(fd, TCSANOW, &t) < 0) {
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perror("tcsetattr");
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exit(1);
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}
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flags = fcntl(fd, F_GETFL);
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if (flags < 0) {
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perror("fcntl F_GETFL");
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exit(1);
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}
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if (fcntl(fd, F_SETFL, flags & ~O_NONBLOCK) < 0) {
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perror("fcntl F_GETFL");
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exit(1);
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}
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}
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if (tcsetattr(fd, TCSANOW, &t) < 0) {
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perror("tcsetattr");
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exit(1);
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}
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flags = fcntl(fd,F_GETFL);
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if (flags < 0) {
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perror("fcntl F_GETFL");
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exit(1);
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}
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if (fcntl(fd,F_SETFL,flags & ~O_NONBLOCK) < 0) {
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perror("fcntl F_GETFL");
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exit(1);
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}
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}
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static int open_next_tty(void)
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{
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int i, fd = -1;
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int i, fd = -1;
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for (i = 0; i != num_ttys; i++) {
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curr_tty = (curr_tty+1) % num_ttys;
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fd = open(ttys[curr_tty], O_RDWR | O_NDELAY);
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for (i = 0; i != num_ttys; i++) {
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curr_tty = (curr_tty+1) % num_ttys;
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fd = open(ttys[curr_tty], O_RDWR | O_NDELAY);
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if (fd >= 0)
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break;
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}
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if (fd >= 0)
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break;
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}
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if (fd >= 0)
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make_raw(fd, &tty);
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return fd;
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make_raw(fd, &tty);
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return fd;
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}
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@ -136,148 +137,147 @@ static int open_next_tty(void)
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static int scan(const char *s, size_t len)
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{
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static int state = 0;
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const char *p;
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int res = 0;
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static int state = 0;
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const char *p;
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int res = 0;
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for (p = s; p != s+len; p++)
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switch (state) {
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case 0:
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if (*p == escape)
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state++;
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else
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state = 0;
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break;
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case 1:
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if (*p == '.')
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exit(0);
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if (*p == 'n')
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res = 1;
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state = 0;
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break;
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}
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return res;
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for (p = s; p != s+len; p++)
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switch (state) {
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case 0:
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if (*p == escape)
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state++;
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else
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state = 0;
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break;
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case 1:
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if (*p == '.')
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exit(0);
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if (*p == 'n')
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res = 1;
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state = 0;
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break;
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}
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return res;
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}
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static int write_log(const char *buf, ssize_t len)
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{
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size_t wrote;
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size_t wrote;
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wrote = fwrite(buf, 1, len, log);
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if (wrote == len)
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return 1;
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fprintf(stderr, "write failed. closing log file.\n");
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fclose(log);
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log = NULL;
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return 0;
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wrote = fwrite(buf, 1, len, log);
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if (wrote == len)
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return 1;
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fprintf(stderr, "write failed. closing log file.\n");
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fclose(log);
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log = NULL;
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return 0;
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}
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static int add_timestamp(void)
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{
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struct timeval tv;
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char buf[40]; /* be generous */
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int len;
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struct timeval tv;
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char buf[40]; /* be generous */
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int len;
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if (gettimeofday(&tv, NULL) < 0) {
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perror("gettimeofday");
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exit(1);
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}
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len = sprintf(buf, "%lu.%06lu ",
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(unsigned long) tv.tv_sec, (unsigned long) tv.tv_usec);
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return write_log(buf, len);
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if (gettimeofday(&tv, NULL) < 0) {
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perror("gettimeofday");
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exit(1);
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}
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len = sprintf(buf, "%lu.%06lu ",
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(unsigned long) tv.tv_sec, (unsigned long) tv.tv_usec);
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return write_log(buf, len);
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}
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static void do_log(const char *buf, ssize_t len)
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{
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static int nl = 1; /* we're at the beginning of a new line */
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char tmp[MAX_BUF];
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const char *from;
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char *to;
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static int nl = 1; /* we're at the beginning of a new line */
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char tmp[MAX_BUF];
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const char *from;
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char *to;
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assert(len <= MAX_BUF);
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from = buf;
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to = tmp;
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while (from != buf+len) {
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if (*from == '\r') {
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from++;
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continue;
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assert(len <= MAX_BUF);
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from = buf;
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to = tmp;
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while (from != buf+len) {
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if (*from == '\r') {
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from++;
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continue;
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}
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if (nl && timestamp)
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if (!add_timestamp())
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return;
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nl = 0;
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if (*from == '\n') {
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*to++ = *from++;
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if (!write_log(tmp, to-tmp))
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return;
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to = tmp;
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nl = 1;
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continue;
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}
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*to++ = *from < ' ' || *from > '~' ? '#' : *from;
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from++;
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}
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if (nl && timestamp)
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if (!add_timestamp())
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return;
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nl = 0;
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if (*from == '\n') {
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*to++ = *from++;
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if (!write_log(tmp, to-tmp))
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return;
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to = tmp;
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nl = 1;
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continue;
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}
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*to++ = *from < ' ' || *from > '~' ? '#' : *from;
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from++;
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}
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write_log(tmp, to-tmp);
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write_log(tmp, to-tmp);
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}
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static int copy(int in, int out, int from_user, int single)
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{
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char buffer[MAX_BUF];
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ssize_t got, wrote, pos;
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char buffer[MAX_BUF];
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ssize_t got, wrote, pos;
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got = read(in, buffer, single ? 1 : sizeof(buffer));
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if (got <= 0)
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return 0;
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if (from_user) {
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if (scan(buffer, got))
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return 0;
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}
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else {
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if (log)
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do_log(buffer, got);
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}
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for (pos = 0; pos != got; pos += wrote) {
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wrote = write(out, buffer+pos, got-pos);
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if (wrote < 0)
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return 0;
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}
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return 1;
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got = read(in, buffer, single ? 1 : sizeof(buffer));
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if (got <= 0)
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return 0;
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if (from_user) {
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if (scan(buffer, got))
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return 0;
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} else {
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if (log)
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do_log(buffer, got);
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}
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for (pos = 0; pos != got; pos += wrote) {
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wrote = write(out, buffer+pos, got-pos);
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if (wrote < 0)
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return 0;
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}
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return 1;
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}
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static void write_string(const char *s)
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{
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int len = strlen(s);
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int len = strlen(s);
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while (len) {
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ssize_t wrote;
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while (len) {
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ssize_t wrote;
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wrote = write(1, s, len);
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if (wrote < 0) {
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perror("write");
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exit(1);
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wrote = write(1, s, len);
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if (wrote < 0) {
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perror("write");
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exit(1);
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}
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s += wrote;
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len -= wrote;
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}
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s += wrote;
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len -= wrote;
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}
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}
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static void cleanup(void)
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{
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if (tcsetattr(0, TCSANOW, &console) < 0)
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perror("tcsetattr");
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write(1, "\n", 1);
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if (tcsetattr(0, TCSANOW, &console) < 0)
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perror("tcsetattr");
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write(1, "\n", 1);
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}
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static void usage(const char *name)
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{
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fprintf(stderr,
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fprintf(stderr,
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"usage: %s [-b bps] [-e escape] [-l logfile [-a] [-T]] [-t delay_ms] tty ...\n\n"
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" -a append to the log file if it already exists\n"
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" -b bps set the TTY to the specified bit rate\n"
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@ -285,108 +285,109 @@ static void usage(const char *name)
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" -l logfile log all output to the specified file\n"
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" -t delay_ms wait the specified amount of time between input characters\n"
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" -T add timestamps to the log file\n"
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, name);
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exit(1);
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, name);
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exit(1);
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}
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int main(int argc, char *const *argv)
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{
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char *end;
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int c, bps;
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int fd = -1;
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int append = 0;
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const char *logfile = NULL;
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int throttle_us = 0;
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int throttle = 0;
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char *end;
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int c, bps;
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int fd = -1;
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int append = 0;
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const char *logfile = NULL;
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int throttle_us = 0;
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int throttle = 0;
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while ((c = getopt(argc, argv, "ab:e:l:t:T")) != EOF)
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switch (c) {
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case 'a':
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append = 1;
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break;
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case 'b':
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bps = strtoul(optarg, &end, 0);
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if (*end)
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usage(*argv);
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speed = bps_to_speed(bps);
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break;
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case 'e':
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if (strlen(optarg) != 1)
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usage(*argv);
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escape = *optarg;
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break;
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case 'l':
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logfile = optarg;
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break;
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case 't':
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throttle_us = strtoul(optarg, &end, 0)*1000;
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if (*end)
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usage(*argv);
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break;
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case 'T':
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timestamp = 1;
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break;
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default:
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usage(*argv);
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while ((c = getopt(argc, argv, "ab:e:l:t:T")) != EOF)
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switch (c) {
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case 'a':
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append = 1;
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break;
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case 'b':
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bps = strtoul(optarg, &end, 0);
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if (*end)
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usage(*argv);
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speed = bps_to_speed(bps);
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break;
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case 'e':
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if (strlen(optarg) != 1)
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usage(*argv);
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escape = *optarg;
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break;
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case 'l':
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logfile = optarg;
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break;
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case 't':
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throttle_us = strtoul(optarg, &end, 0)*1000;
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if (*end)
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usage(*argv);
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break;
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case 'T':
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timestamp = 1;
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break;
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default:
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usage(*argv);
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}
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num_ttys = argc-optind;
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ttys = argv+optind;
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num_ttys = argc-optind;
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ttys = argv+optind;
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if (logfile) {
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log = fopen(logfile, append ? "a" : "w");
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if (!log) {
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perror(logfile);
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exit(1);
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if (logfile) {
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log = fopen(logfile, append ? "a" : "w");
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if (!log) {
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perror(logfile);
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exit(1);
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}
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setlinebuf(log);
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}
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setlinebuf(log);
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}
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make_raw(0, &console);
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atexit(cleanup);
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while (1) {
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struct timeval tv;
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fd_set set;
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int res;
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make_raw(0, &console);
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atexit(cleanup);
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while (1) {
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struct timeval tv;
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fd_set set;
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int res;
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|
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if (fd < 0) {
|
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fd = open_next_tty();
|
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if (fd > 0) {
|
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char buf[1024]; /* enough :-) */
|
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if (fd < 0) {
|
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fd = open_next_tty();
|
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if (fd > 0) {
|
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char buf[1024]; /* enough :-) */
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sprintf(buf, "\r\r[Open %s]\r\n", ttys[curr_tty]);
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write_string(buf);
|
||||
}
|
||||
}
|
||||
FD_ZERO(&set);
|
||||
if (!throttle)
|
||||
FD_SET(0, &set);
|
||||
if (fd >= 0)
|
||||
FD_SET(fd, &set);
|
||||
tv.tv_sec = 0;
|
||||
tv.tv_usec = throttle ? throttle_us : 100000;
|
||||
res = select(fd < 0 ? 1 : fd+1, &set, NULL, NULL, &tv);
|
||||
if (res < 0) {
|
||||
perror("select");
|
||||
return 1;
|
||||
}
|
||||
if (!res)
|
||||
throttle = 0;
|
||||
if (FD_ISSET(0, &set)) {
|
||||
if (throttle_us)
|
||||
throttle = 1;
|
||||
if (!copy(0, fd, 1, throttle_us != 0))
|
||||
goto failed;
|
||||
}
|
||||
if (fd >= 0 && FD_ISSET(fd, &set))
|
||||
if (!copy(fd, 1, 0, 0))
|
||||
goto failed;
|
||||
continue;
|
||||
sprintf(buf, "\r\r[Open %s]\r\n",
|
||||
ttys[curr_tty]);
|
||||
write_string(buf);
|
||||
}
|
||||
}
|
||||
FD_ZERO(&set);
|
||||
if (!throttle)
|
||||
FD_SET(0, &set);
|
||||
if (fd >= 0)
|
||||
FD_SET(fd, &set);
|
||||
tv.tv_sec = 0;
|
||||
tv.tv_usec = throttle ? throttle_us : 100000;
|
||||
res = select(fd < 0 ? 1 : fd+1, &set, NULL, NULL, &tv);
|
||||
if (res < 0) {
|
||||
perror("select");
|
||||
return 1;
|
||||
}
|
||||
if (!res)
|
||||
throttle = 0;
|
||||
if (FD_ISSET(0, &set)) {
|
||||
if (throttle_us)
|
||||
throttle = 1;
|
||||
if (!copy(0, fd, 1, throttle_us != 0))
|
||||
goto failed;
|
||||
}
|
||||
if (fd >= 0 && FD_ISSET(fd, &set))
|
||||
if (!copy(fd, 1, 0, 0))
|
||||
goto failed;
|
||||
continue;
|
||||
|
||||
failed:
|
||||
write_string("\r\n[Closed]\r\n");
|
||||
(void) close(fd);
|
||||
fd = -1;
|
||||
}
|
||||
return 0;
|
||||
write_string("\r\n[Closed]\r\n");
|
||||
(void) close(fd);
|
||||
fd = -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user