- do away with the fwd-decls of functions. Should not contain any code changes
AFAICT.
This commit is contained in:
Bernhard Reutner-Fischer
parent
d9a761d9c3
commit
6d82f94681
@ -212,20 +212,6 @@ static struct Speedtab speedtab[] = {
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};
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#endif
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static void parse_args(int argc, char **argv, struct options *op);
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static void parse_speeds(struct options *op, char *arg);
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static void open_tty(char *tty, struct termio *tp, int local);
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static void termio_init(struct termio *tp, int speed, struct options *op);
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static void auto_baud(struct termio *tp);
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static void do_prompt(struct options *op, struct termio *tp);
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static void next_speed(struct termio *tp, struct options *op);
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static char *get_logname(struct options *op, struct chardata *cp,
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struct termio *tp);
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static void termio_final(struct options *op, struct termio *tp,
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struct chardata *cp);
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static int caps_lock(const char *s);
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static int bcode(const char *s);
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static void error(const char *fmt, ...) ATTRIBUTE_NORETURN;
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#ifdef SYSV_STYLE
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#ifdef CONFIG_FEATURE_UTMP
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@ -247,136 +233,84 @@ FILE *dbf;
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#define debug(s) /* nothing */
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#endif
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int getty_main(int argc, char **argv)
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/*
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* output error messages
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*/
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static void error(const char *fmt, ...) ATTRIBUTE_NORETURN;
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static void error(const char *fmt, ...)
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{
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char *logname = NULL; /* login name, given to /bin/login */
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struct chardata chardata; /* set by get_logname() */
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struct termio termio; /* terminal mode bits */
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static struct options options = {
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0, /* show /etc/issue (SYSV_STYLE) */
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0, /* no timeout */
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_PATH_LOGIN, /* default login program */
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"tty1", /* default tty line */
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"", /* modem init string */
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#ifdef ISSUE
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ISSUE, /* default issue file */
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va_list va_alist;
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char buf[256];
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#ifdef CONFIG_SYSLOGD
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va_start(va_alist, fmt);
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vsnprintf(buf, sizeof(buf), fmt, va_alist);
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openlog(bb_applet_name, 0, LOG_AUTH);
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syslog(LOG_ERR, "%s", buf);
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closelog();
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#else
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NULL,
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#endif
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0, /* no baud rates known yet */
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};
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int fd;
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size_t l;
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#ifdef DEBUGGING
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dbf = bb_xfopen(DEBUGTERM, "w");
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{
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int i;
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for (i = 1; i < argc; i++) {
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debug(argv[i]);
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debug("\n");
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}
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snprintf(buf, sizeof(buf), "%s: ", bb_applet_name);
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l = strlen(buf);
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va_start(va_alist, fmt);
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vsnprintf(buf + l, sizeof(buf) - l, fmt, va_alist);
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l = strlen(buf);
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/* truncate if need */
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if((l + 3) > sizeof(buf))
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l = sizeof(buf) - 3;
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/* add \r\n always */
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buf[l++] = '\r';
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buf[l++] = '\n';
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buf[l] = 0;
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if ((fd = open("/dev/console", 1)) >= 0) {
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write(fd, buf, l);
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close(fd);
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}
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#endif
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/* Parse command-line arguments. */
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va_end(va_alist);
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parse_args(argc, argv, &options);
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#ifdef __linux__
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setsid();
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#endif
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/* Update the utmp file. */
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#ifdef SYSV_STYLE
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#ifdef CONFIG_FEATURE_UTMP
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update_utmp(options.tty);
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#endif
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#endif
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debug("calling open_tty\n");
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/* Open the tty as standard { input, output, error }. */
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open_tty(options.tty, &termio, options.flags & F_LOCAL);
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#ifdef __linux__
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{
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int iv;
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iv = getpid();
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ioctl(0, TIOCSPGRP, &iv);
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}
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#endif
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/* Initialize the termio settings (raw mode, eight-bit, blocking i/o). */
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debug("calling termio_init\n");
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termio_init(&termio, options.speeds[FIRST_SPEED], &options);
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/* write the modem init string and DON'T flush the buffers */
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if (options.flags & F_INITSTRING) {
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debug("writing init string\n");
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write(1, options.initstring, strlen(options.initstring));
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}
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if (!(options.flags & F_LOCAL)) {
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/* go to blocking write mode unless -L is specified */
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fcntl(1, F_SETFL, fcntl(1, F_GETFL, 0) & ~O_NONBLOCK);
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}
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/* Optionally detect the baud rate from the modem status message. */
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debug("before autobaud\n");
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if (options.flags & F_PARSE)
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auto_baud(&termio);
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/* Set the optional timer. */
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if (options.timeout)
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(void) alarm((unsigned) options.timeout);
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/* optionally wait for CR or LF before writing /etc/issue */
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if (options.flags & F_WAITCRLF) {
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char ch;
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debug("waiting for cr-lf\n");
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while (read(0, &ch, 1) == 1) {
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ch &= 0x7f; /* strip "parity bit" */
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#ifdef DEBUGGING
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fprintf(dbf, "read %c\n", ch);
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#endif
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if (ch == '\n' || ch == '\r')
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break;
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}
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}
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chardata = init_chardata;
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if (!(options.flags & F_NOPROMPT)) {
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/* Read the login name. */
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debug("reading login name\n");
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/* while ((logname = get_logname(&options, &chardata, &termio)) == 0) */
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while ((logname = get_logname(&options, &chardata, &termio)) ==
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NULL) next_speed(&termio, &options);
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}
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/* Disable timer. */
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if (options.timeout)
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(void) alarm(0);
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/* Finalize the termio settings. */
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termio_final(&options, &termio, &chardata);
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/* Now the newline character should be properly written. */
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(void) write(1, "\n", 1);
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/* Let the login program take care of password validation. */
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(void) execl(options.login, options.login, "--", logname, (char *) 0);
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error("%s: can't exec %s: %m", options.tty, options.login);
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(void) sleep((unsigned) 10); /* be kind to init(8) */
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exit(1);
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}
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/* parse-args - parse command-line arguments */
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/* bcode - convert speed string to speed code; return 0 on failure */
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static int bcode(const char *s)
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{
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int r;
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unsigned long value;
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if (safe_strtoul((char *)s, &value)) {
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return -1;
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}
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if ((r = bb_value_to_baud(value)) > 0) {
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return r;
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}
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return 0;
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}
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/* parse_speeds - parse alternate baud rates */
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static void parse_speeds(struct options *op, char *arg)
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{
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char *cp;
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debug("entered parse_speeds\n");
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for (cp = strtok(arg, ","); cp != 0; cp = strtok((char *) 0, ",")) {
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if ((op->speeds[op->numspeed++] = bcode(cp)) <= 0)
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error("bad speed: %s", cp);
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if (op->numspeed > MAX_SPEED)
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error("too many alternate speeds");
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}
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debug("exiting parsespeeds\n");
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}
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/* parse-args - parse command-line arguments */
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static void parse_args(int argc, char **argv, struct options *op)
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{
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char *ts;
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@ -427,84 +361,6 @@ static void parse_args(int argc, char **argv, struct options *op)
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debug("exiting parseargs\n");
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}
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/* parse_speeds - parse alternate baud rates */
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static void parse_speeds(struct options *op, char *arg)
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{
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char *cp;
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debug("entered parse_speeds\n");
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for (cp = strtok(arg, ","); cp != 0; cp = strtok((char *) 0, ",")) {
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if ((op->speeds[op->numspeed++] = bcode(cp)) <= 0)
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error("bad speed: %s", cp);
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if (op->numspeed > MAX_SPEED)
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error("too many alternate speeds");
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}
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debug("exiting parsespeeds\n");
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}
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#ifdef SYSV_STYLE
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#ifdef CONFIG_FEATURE_UTMP
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/* update_utmp - update our utmp entry */
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static void update_utmp(char *line)
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{
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struct utmp ut;
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struct utmp *utp;
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time_t t;
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int mypid = getpid();
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#if ! (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1))
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struct flock lock;
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#endif
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/*
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* The utmp file holds miscellaneous information about things started by
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* /sbin/init and other system-related events. Our purpose is to update
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* the utmp entry for the current process, in particular the process type
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* and the tty line we are listening to. Return successfully only if the
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* utmp file can be opened for update, and if we are able to find our
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* entry in the utmp file.
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*/
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if (access(_PATH_UTMP, R_OK|W_OK) == -1) {
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close(creat(_PATH_UTMP, 0664));
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}
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utmpname(_PATH_UTMP);
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setutent();
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while ((utp = getutent())
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&& !(utp->ut_type == INIT_PROCESS && utp->ut_pid == mypid)) /* nothing */
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;
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if (utp) {
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memcpy(&ut, utp, sizeof(ut));
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} else {
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/* some inits don't initialize utmp... */
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memset(&ut, 0, sizeof(ut));
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strncpy(ut.ut_id, line + 3, sizeof(ut.ut_id));
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}
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/*endutent(); */
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strncpy(ut.ut_user, "LOGIN", sizeof(ut.ut_user));
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strncpy(ut.ut_line, line, sizeof(ut.ut_line));
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if (fakehost)
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strncpy(ut.ut_host, fakehost, sizeof(ut.ut_host));
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time(&t);
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ut.ut_time = t;
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ut.ut_type = LOGIN_PROCESS;
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ut.ut_pid = mypid;
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pututline(&ut);
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endutent();
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#ifdef CONFIG_FEATURE_WTMP
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if (access(bb_path_wtmp_file, R_OK|W_OK) == -1)
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close(creat(bb_path_wtmp_file, 0664));
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updwtmp(bb_path_wtmp_file, &ut);
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#endif
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}
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#endif /* CONFIG_FEATURE_UTMP */
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#endif /* SYSV_STYLE */
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/* open_tty - set up tty as standard { input, output, error } */
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static void open_tty(char *tty, struct termio *tp, int local)
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{
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@ -611,7 +467,6 @@ static void open_tty(char *tty, struct termio *tp, int local)
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}
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/* termio_init - initialize termio settings */
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static void termio_init(struct termio *tp, int speed, struct options *op)
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{
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/*
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@ -710,15 +565,6 @@ static void auto_baud(struct termio *tp)
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(void) ioctl(0, TCSETA, tp);
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}
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/* do_prompt - show login prompt, optionally preceded by /etc/issue contents */
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static void do_prompt(struct options *op, struct termio *tp)
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{
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#ifdef ISSUE /* optional: show /etc/issue */
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print_login_issue(op->issue, op->tty);
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#endif
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print_login_prompt();
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}
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/* next_speed - select next baud rate */
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static void next_speed(struct termio *tp, struct options *op)
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{
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@ -730,11 +576,36 @@ static void next_speed(struct termio *tp, struct options *op)
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(void) ioctl(0, TCSETA, tp);
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}
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/* do_prompt - show login prompt, optionally preceded by /etc/issue contents */
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static void do_prompt(struct options *op, struct termio *tp)
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{
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#ifdef ISSUE /* optional: show /etc/issue */
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print_login_issue(op->issue, op->tty);
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#endif
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print_login_prompt();
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}
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/* caps_lock - string contains upper case without lower case */
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/* returns 1 if true, 0 if false */
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static int caps_lock(const char *s)
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{
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int capslock;
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for (capslock = 0; *s; s++) {
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if (islower(*s))
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return (0);
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if (capslock == 0)
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capslock = isupper(*s);
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}
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return (capslock);
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}
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#define logname bb_common_bufsiz1
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/* get_logname - get user name, establish parity, speed, erase, kill, eol */
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/* return NULL on failure, logname on success */
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static char *get_logname(struct options *op, struct chardata *cp, struct termio *tp)
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{
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#define logname bb_common_bufsiz1
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char *bp;
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char c; /* input character, full eight bits */
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char ascval; /* low 7 bits of input character */
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@ -901,73 +772,195 @@ static void termio_final(struct options *op, struct termio *tp, struct chardata
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error("%s: ioctl: TCSETA: %m", op->tty);
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}
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/* caps_lock - string contains upper case without lower case */
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/* returns 1 if true, 0 if false */
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static int caps_lock(const char *s)
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{
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int capslock;
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for (capslock = 0; *s; s++) {
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if (islower(*s))
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return (0);
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if (capslock == 0)
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capslock = isupper(*s);
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#ifdef SYSV_STYLE
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#ifdef CONFIG_FEATURE_UTMP
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/* update_utmp - update our utmp entry */
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static void update_utmp(char *line)
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{
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struct utmp ut;
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struct utmp *utp;
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time_t t;
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int mypid = getpid();
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#if ! (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1))
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struct flock lock;
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#endif
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/*
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* The utmp file holds miscellaneous information about things started by
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* /sbin/init and other system-related events. Our purpose is to update
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* the utmp entry for the current process, in particular the process type
|
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* and the tty line we are listening to. Return successfully only if the
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* utmp file can be opened for update, and if we are able to find our
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* entry in the utmp file.
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*/
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if (access(_PATH_UTMP, R_OK|W_OK) == -1) {
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close(creat(_PATH_UTMP, 0664));
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}
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return (capslock);
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utmpname(_PATH_UTMP);
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setutent();
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while ((utp = getutent())
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&& !(utp->ut_type == INIT_PROCESS && utp->ut_pid == mypid)) /* nothing */
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;
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if (utp) {
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memcpy(&ut, utp, sizeof(ut));
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} else {
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/* some inits don't initialize utmp... */
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memset(&ut, 0, sizeof(ut));
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strncpy(ut.ut_id, line + 3, sizeof(ut.ut_id));
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}
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/*endutent(); */
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strncpy(ut.ut_user, "LOGIN", sizeof(ut.ut_user));
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strncpy(ut.ut_line, line, sizeof(ut.ut_line));
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if (fakehost)
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strncpy(ut.ut_host, fakehost, sizeof(ut.ut_host));
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time(&t);
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ut.ut_time = t;
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ut.ut_type = LOGIN_PROCESS;
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ut.ut_pid = mypid;
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pututline(&ut);
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endutent();
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#ifdef CONFIG_FEATURE_WTMP
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if (access(bb_path_wtmp_file, R_OK|W_OK) == -1)
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close(creat(bb_path_wtmp_file, 0664));
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updwtmp(bb_path_wtmp_file, &ut);
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#endif
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}
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/* bcode - convert speed string to speed code; return 0 on failure */
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static int bcode(const char *s)
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{
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int r;
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unsigned long value;
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if (safe_strtoul((char *)s, &value)) {
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return -1;
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}
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if ((r = bb_value_to_baud(value)) > 0) {
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return r;
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}
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return 0;
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}
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#endif /* CONFIG_FEATURE_UTMP */
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#endif /* SYSV_STYLE */
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/*
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* output error messages
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*/
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static void error(const char *fmt, ...)
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{
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va_list va_alist;
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char buf[256];
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#ifdef CONFIG_SYSLOGD
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va_start(va_alist, fmt);
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vsnprintf(buf, sizeof(buf), fmt, va_alist);
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openlog(bb_applet_name, 0, LOG_AUTH);
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syslog(LOG_ERR, "%s", buf);
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closelog();
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#undef logname
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int getty_main(int argc, char **argv)
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{
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char *logname = NULL; /* login name, given to /bin/login */
|
||||
struct chardata chardata; /* set by get_logname() */
|
||||
struct termio termio; /* terminal mode bits */
|
||||
static struct options options = {
|
||||
0, /* show /etc/issue (SYSV_STYLE) */
|
||||
0, /* no timeout */
|
||||
_PATH_LOGIN, /* default login program */
|
||||
"tty1", /* default tty line */
|
||||
"", /* modem init string */
|
||||
#ifdef ISSUE
|
||||
ISSUE, /* default issue file */
|
||||
#else
|
||||
int fd;
|
||||
size_t l;
|
||||
NULL,
|
||||
#endif
|
||||
0, /* no baud rates known yet */
|
||||
};
|
||||
|
||||
snprintf(buf, sizeof(buf), "%s: ", bb_applet_name);
|
||||
l = strlen(buf);
|
||||
va_start(va_alist, fmt);
|
||||
vsnprintf(buf + l, sizeof(buf) - l, fmt, va_alist);
|
||||
l = strlen(buf);
|
||||
/* truncate if need */
|
||||
if((l + 3) > sizeof(buf))
|
||||
l = sizeof(buf) - 3;
|
||||
/* add \r\n always */
|
||||
buf[l++] = '\r';
|
||||
buf[l++] = '\n';
|
||||
buf[l] = 0;
|
||||
if ((fd = open("/dev/console", 1)) >= 0) {
|
||||
write(fd, buf, l);
|
||||
close(fd);
|
||||
#ifdef DEBUGGING
|
||||
dbf = bb_xfopen(DEBUGTERM, "w");
|
||||
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 1; i < argc; i++) {
|
||||
debug(argv[i]);
|
||||
debug("\n");
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
va_end(va_alist);
|
||||
/* Parse command-line arguments. */
|
||||
|
||||
(void) sleep((unsigned) 10); /* be kind to init(8) */
|
||||
exit(1);
|
||||
parse_args(argc, argv, &options);
|
||||
|
||||
#ifdef __linux__
|
||||
setsid();
|
||||
#endif
|
||||
|
||||
/* Update the utmp file. */
|
||||
|
||||
|
||||
#ifdef SYSV_STYLE
|
||||
#ifdef CONFIG_FEATURE_UTMP
|
||||
update_utmp(options.tty);
|
||||
#endif
|
||||
#endif
|
||||
|
||||
debug("calling open_tty\n");
|
||||
/* Open the tty as standard { input, output, error }. */
|
||||
open_tty(options.tty, &termio, options.flags & F_LOCAL);
|
||||
|
||||
#ifdef __linux__
|
||||
{
|
||||
int iv;
|
||||
|
||||
iv = getpid();
|
||||
ioctl(0, TIOCSPGRP, &iv);
|
||||
}
|
||||
#endif
|
||||
/* Initialize the termio settings (raw mode, eight-bit, blocking i/o). */
|
||||
debug("calling termio_init\n");
|
||||
termio_init(&termio, options.speeds[FIRST_SPEED], &options);
|
||||
|
||||
/* write the modem init string and DON'T flush the buffers */
|
||||
if (options.flags & F_INITSTRING) {
|
||||
debug("writing init string\n");
|
||||
write(1, options.initstring, strlen(options.initstring));
|
||||
}
|
||||
|
||||
if (!(options.flags & F_LOCAL)) {
|
||||
/* go to blocking write mode unless -L is specified */
|
||||
fcntl(1, F_SETFL, fcntl(1, F_GETFL, 0) & ~O_NONBLOCK);
|
||||
}
|
||||
|
||||
/* Optionally detect the baud rate from the modem status message. */
|
||||
debug("before autobaud\n");
|
||||
if (options.flags & F_PARSE)
|
||||
auto_baud(&termio);
|
||||
|
||||
/* Set the optional timer. */
|
||||
if (options.timeout)
|
||||
(void) alarm((unsigned) options.timeout);
|
||||
|
||||
/* optionally wait for CR or LF before writing /etc/issue */
|
||||
if (options.flags & F_WAITCRLF) {
|
||||
char ch;
|
||||
|
||||
debug("waiting for cr-lf\n");
|
||||
while (read(0, &ch, 1) == 1) {
|
||||
ch &= 0x7f; /* strip "parity bit" */
|
||||
#ifdef DEBUGGING
|
||||
fprintf(dbf, "read %c\n", ch);
|
||||
#endif
|
||||
if (ch == '\n' || ch == '\r')
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
chardata = init_chardata;
|
||||
if (!(options.flags & F_NOPROMPT)) {
|
||||
/* Read the login name. */
|
||||
debug("reading login name\n");
|
||||
/* while ((logname = get_logname(&options, &chardata, &termio)) == 0) */
|
||||
while ((logname = get_logname(&options, &chardata, &termio)) ==
|
||||
NULL) next_speed(&termio, &options);
|
||||
}
|
||||
|
||||
/* Disable timer. */
|
||||
|
||||
if (options.timeout)
|
||||
(void) alarm(0);
|
||||
|
||||
/* Finalize the termio settings. */
|
||||
|
||||
termio_final(&options, &termio, &chardata);
|
||||
|
||||
/* Now the newline character should be properly written. */
|
||||
|
||||
(void) write(1, "\n", 1);
|
||||
|
||||
/* Let the login program take care of password validation. */
|
||||
|
||||
(void) execl(options.login, options.login, "--", logname, (char *) 0);
|
||||
error("%s: can't exec %s: %m", options.tty, options.login);
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user