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authorBernhard Reutner-Fischer2007-09-22 21:18:46 +0000
committerBernhard Reutner-Fischer2007-09-22 21:18:46 +0000
commit73f56bb76d36ab95a1f9b73d686c71625e4c86b1 (patch)
tree62bd8d2bea291f514bd6f33a02bb389e5bb3e2b5 /util-linux
parent3a252b8c12a7d5e1c0e6d08fb43979c23ee4030e (diff)
downloadbusybox-73f56bb76d36ab95a1f9b73d686c71625e4c86b1.zip
busybox-73f56bb76d36ab95a1f9b73d686c71625e4c86b1.tar.gz
- actually mv microcom.c to miscutils
Diffstat (limited to 'util-linux')
-rw-r--r--util-linux/microcom.c138
1 files changed, 0 insertions, 138 deletions
diff --git a/util-linux/microcom.c b/util-linux/microcom.c
deleted file mode 100644
index 7a746a3..0000000
--- a/util-linux/microcom.c
+++ /dev/null
@@ -1,138 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * bare bones 'talk to modem' program - similar to 'cu -l $device'
- * inspired by mgetty's microcom
- *
- * Copyright (C) 2007 by Vladimir Dronnikov <dronnikov@gmail.ru>
- *
- * Licensed under GPLv2, see file LICENSE in this tarball for details.
- */
-#include "busybox.h"
-
-int microcom_main(int argc, char **argv);
-int microcom_main(int argc, char **argv)
-{
- struct pollfd pfd[2];
-#define sfd (pfd[1].fd)
- char *device_lock_file = NULL;
- const char *s;
- const char *opt_s = "9600";
- unsigned speed;
- int len;
- int exitcode = 1;
- struct termios tio0, tiosfd, tio;
-
- getopt32(argv, "s:", &opt_s);
- argc -= optind;
- argv += optind;
- if (!argv[0])
- bb_show_usage();
- speed = xatou(opt_s);
-
- // try to create lock file in /var/lock
- s = bb_basename(argv[0]);
- if (!s[0]) {
- errno = ENODEV;
- bb_perror_msg_and_die("can't lock device");
- }
- device_lock_file = xasprintf("/var/lock/LCK..%s", s);
- sfd = open(device_lock_file, O_CREAT | O_WRONLY | O_TRUNC | O_EXCL, 0644);
- if (sfd < 0) {
- if (ENABLE_FEATURE_CLEAN_UP)
- free(device_lock_file);
- device_lock_file = NULL;
- if (errno == EEXIST)
- bb_perror_msg_and_die("can't lock device");
- // We don't abort on other errors: /var/lock can be
- // non-writable or non-existent
- } else {
- // %4d to make mgetty happy. It treats 4-bytes lock files as binary,
- // not text, PID. Making 5+ char file. Brrr...
- s = xasprintf("%4d\n", getpid());
- write(sfd, s, strlen(s));
- if (ENABLE_FEATURE_CLEAN_UP)
- free((char*)s);
- close(sfd);
- }
-
- // open device
- sfd = open(argv[0], O_RDWR | O_NDELAY);
- if (sfd < 0) {
- bb_perror_msg("can't open device");
- goto unlock_and_exit;
- }
- fcntl(sfd, F_SETFL, O_RDWR); // why?
-
- // put stdin to "raw mode", handle one character at a time
- tcgetattr(STDIN_FILENO, &tio0);
- tio = tio0;
- tio.c_lflag &= ~(ICANON|ECHO);
- tio.c_iflag &= ~(IXON|ICRNL);
- tio.c_oflag &= ~(ONLCR);
- tio.c_cc[VMIN] = 1;
- tio.c_cc[VTIME] = 0;
- if (tcsetattr(STDIN_FILENO, TCSANOW, &tio)) {
- bb_perror_msg("can't tcsetattr for %s", "stdin");
- goto unlock_and_exit;
- }
-
- /* same thing for modem (plus: set baud rate) - TODO: make CLI option */
- tcgetattr(sfd, &tiosfd);
- tio = tiosfd;
- tio.c_lflag &= ~(ICANON|ECHO);
- tio.c_iflag &= ~(IXON|ICRNL);
- tio.c_oflag &= ~(ONLCR);
- tio.c_cc[VMIN] = 1;
- tio.c_cc[VTIME] = 0;
- cfsetispeed(&tio, tty_value_to_baud(speed));
- cfsetospeed(&tio, tty_value_to_baud(speed));
- if (tcsetattr(sfd, TCSANOW, &tio)) {
- bb_perror_msg("can't tcsetattr for %s", "device");
- goto unlock_and_exit;
- }
-
- // disable SIGINT
- signal(SIGINT, SIG_IGN);
-
- // drain stdin
- tcflush(STDIN_FILENO, TCIFLUSH);
- printf("connected to '%s' (%d bps), exit with ctrl-X...\r\n", argv[0], speed);
-
- // main loop: check with poll(), then read/write bytes across
- pfd[0].fd = STDIN_FILENO;
- pfd[0].events = POLLIN;
- /*pfd[1].fd = sfd;*/
- pfd[1].events = POLLIN;
- while (1) {
- int i;
- while (-1 == poll(pfd, 2, -1) && EINTR == errno)
- continue;
- for (i = 0; i < 2; ++i) {
- if (pfd[i].revents & POLLIN) {
- len = read(pfd[i].fd, bb_common_bufsiz1, COMMON_BUFSIZE);
- if (len > 0) {
- if (!i && 24 == bb_common_bufsiz1[0])
- goto done; // ^X exits
- write(pfd[1-i].fd, bb_common_bufsiz1, len);
- }
- }
- }
- }
- done:
- tcsetattr(sfd, TCSANOW, &tiosfd);
- tcsetattr(STDIN_FILENO, TCSANOW, &tio0);
- tcflush(STDIN_FILENO, TCIFLUSH);
-
- if (ENABLE_FEATURE_CLEAN_UP)
- close(sfd);
- exitcode = 0;
-
- unlock_and_exit:
- // delete lock file
- if (device_lock_file) {
- unlink(device_lock_file);
- if (ENABLE_FEATURE_CLEAN_UP)
- free(device_lock_file);
- }
- return exitcode;
-}