From bcdb9b8762d14634afb570fe48db9fa62d8c0109 Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Sun, 9 Jan 2011 21:44:51 +0100 Subject: getty: fix -i (was ignored) Signed-off-by: Denys Vlasenko --- loginutils/getty.c | 135 ++++++++++++++++++++++++++--------------------------- 1 file changed, 67 insertions(+), 68 deletions(-) (limited to 'loginutils') diff --git a/loginutils/getty.c b/loginutils/getty.c index 76b0de449..0f5e333a7 100644 --- a/loginutils/getty.c +++ b/loginutils/getty.c @@ -31,14 +31,25 @@ * System V, assume it is SunOS 4. */ #ifdef LOGIN_PROCESS /* defined in System V utmp.h */ -#include +# include #else /* if !sysV style, wtmp/utmp code is off */ -#undef ENABLE_FEATURE_UTMP -#undef ENABLE_FEATURE_WTMP -#define ENABLE_FEATURE_UTMP 0 -#define ENABLE_FEATURE_WTMP 0 +# undef ENABLE_FEATURE_UTMP +# undef ENABLE_FEATURE_WTMP +# define ENABLE_FEATURE_UTMP 0 +# define ENABLE_FEATURE_WTMP 0 #endif /* LOGIN_PROCESS */ + +/* The following is used for understandable diagnostics. */ +#ifdef DEBUGGING +static FILE *dbf; +# define DEBUGTERM "/dev/ttyp0" +# define debug(...) do { fprintf(dbf, __VA_ARGS__); fflush(dbf); } while (0) +#else +# define debug(...) ((void)0) +#endif + + /* * Things you may want to modify. * @@ -51,13 +62,15 @@ #undef HANDLE_ALLCAPS #undef ANCIENT_BS_KILL_CHARS +#undef _PATH_LOGIN #define _PATH_LOGIN "/bin/login" -/* If ISSUE is not defined, getty will never display the contents of the +/* Displayed before the login prompt. + * If ISSUE is not defined, getty will never display the contents of the * /etc/issue file. You will not want to spit out large "issue" files at the * wrong baud rate. */ -#define ISSUE "/etc/issue" /* displayed before the login prompt */ +#define ISSUE "/etc/issue" /* Some shorthands for control characters. */ #define CTL(x) ((x) ^ 0100) /* Assumes ASCII dialect */ @@ -83,7 +96,6 @@ /* Storage for command-line options. */ struct options { - int flags; /* toggle switches, see below */ unsigned timeout; /* time-out period */ const char *login; /* login program */ const char *tty; /* name of tty */ @@ -111,7 +123,6 @@ struct chardata { #endif }; - /* Initial values for the above. */ static const struct chardata init_chardata = { DEF_ERASE, /* default erase character */ @@ -123,30 +134,37 @@ static const struct chardata init_chardata = { #endif }; -static const char opt_string[] ALIGN1 = "I:LH:f:hil:mt:wn"; -#define F_INITSTRING (1 << 0) /* -I initstring is set */ -#define F_LOCAL (1 << 1) /* -L force local */ -#define F_FAKEHOST (1 << 2) /* -H fake hostname */ -#define F_CUSTISSUE (1 << 3) /* -f give alternative issue file */ -#define F_RTSCTS (1 << 4) /* -h enable RTS/CTS flow control */ -#define F_ISSUE (1 << 5) /* -i display /etc/issue */ -#define F_LOGIN (1 << 6) /* -l non-default login program */ -#define F_PARSE (1 << 7) /* -m process modem status messages */ -#define F_TIMEOUT (1 << 8) /* -t time out */ -#define F_WAITCRLF (1 << 9) /* -w wait for CR or LF */ -#define F_NOPROMPT (1 << 10) /* -n don't ask for login name */ - - #define line_buf bb_common_bufsiz1 -/* The following is used for understandable diagnostics. */ -#ifdef DEBUGGING -static FILE *dbf; -#define DEBUGTERM "/dev/ttyp0" -#define debug(...) do { fprintf(dbf, __VA_ARGS__); fflush(dbf); } while (0) -#else -#define debug(...) ((void)0) -#endif +//usage:#define getty_trivial_usage +//usage: "[OPTIONS] BAUD_RATE TTY [TERMTYPE]" +//usage:#define getty_full_usage "\n\n" +//usage: "Open a tty, prompt for a login name, then invoke /bin/login\n" +//usage: "\nOptions:" +//usage: "\n -h Enable hardware (RTS/CTS) flow control" +//usage: "\n -i Don't display /etc/issue" +//usage: "\n -L Local line, don't do carrier detect" +//usage: "\n -m Get baud rate from modem's CONNECT status message" +//usage: "\n -w Wait for a CR or LF before sending /etc/issue" +//usage: "\n -n Don't prompt the user for a login name" +//usage: "\n -f ISSUE_FILE Display ISSUE_FILE instead of /etc/issue" +//usage: "\n -l LOGIN Invoke LOGIN instead of /bin/login" +//usage: "\n -t SEC Terminate after SEC if no username is read" +//usage: "\n -I INITSTR Send INITSTR before anything else" +//usage: "\n -H HOST Log HOST into the utmp file as the hostname" + +static const char opt_string[] ALIGN1 = "I:LH:f:hil:mt:wn"; +#define F_INITSTRING (1 << 0) /* -I */ +#define F_LOCAL (1 << 1) /* -L */ +#define F_FAKEHOST (1 << 2) /* -H */ +#define F_CUSTISSUE (1 << 3) /* -f */ +#define F_RTSCTS (1 << 4) /* -h */ +#define F_NOISSUE (1 << 5) /* -i */ +#define F_LOGIN (1 << 6) /* -l */ +#define F_PARSE (1 << 7) /* -m */ +#define F_TIMEOUT (1 << 8) /* -t */ +#define F_WAITCRLF (1 << 9) /* -w */ +#define F_NOPROMPT (1 << 10) /* -n */ /* bcode - convert speed string to speed code; return <= 0 on failure */ @@ -181,18 +199,18 @@ static void parse_speeds(struct options *op, char *arg) static void parse_args(char **argv, struct options *op, char **fakehost_p) { char *ts; + int flags; opt_complementary = "-2:t+"; /* at least 2 args; -t N */ - op->flags = getopt32(argv, opt_string, + flags = getopt32(argv, opt_string, &(op->initstring), fakehost_p, &(op->issue), &(op->login), &op->timeout); - argv += optind; - if (op->flags & F_INITSTRING) { + if (flags & F_INITSTRING) { op->initstring = xstrdup(op->initstring); /* decode \ddd octal codes into chars */ strcpy_and_process_escape_sequences((char*)op->initstring, op->initstring); } - op->flags ^= F_ISSUE; /* invert flag "show /etc/issue" */ + argv += optind; debug("after getopt\n"); /* we loosen up a bit and accept both "baudrate tty" and "tty baudrate" */ @@ -217,17 +235,6 @@ static void open_tty(const char *tty) { /* Set up new standard input, unless we are given an already opened port. */ if (NOT_LONE_DASH(tty)) { -// struct stat st; -// int cur_dir_fd; -// int fd; - - /* Sanity checks... */ -// cur_dir_fd = xopen(".", O_DIRECTORY | O_NONBLOCK); -// xchdir("/dev"); -// xstat(tty, &st); -// if (!S_ISCHR(st.st_mode)) -// bb_error_msg_and_die("not a character device"); - if (tty[0] != '/') tty = xasprintf("/dev/%s", tty); /* will leak it */ @@ -236,15 +243,6 @@ static void open_tty(const char *tty) close(0); /*fd =*/ xopen(tty, O_RDWR | O_NONBLOCK); /* uses fd 0 */ -// /* Restore current directory */ -// fchdir(cur_dir_fd); - - /* Open the tty as standard input, continued */ -// xmove_fd(fd, 0); -// /* fd is >= cur_dir_fd, and cur_dir_fd gets closed too here: */ -// while (fd > 2) -// close(fd--); - /* Set proper protections and ownership. */ fchown(0, 0, 0); /* 0:0 */ fchmod(0, 0620); /* crw--w---- */ @@ -259,7 +257,7 @@ static void open_tty(const char *tty) } /* termios_init - initialize termios settings */ -static void termios_init(struct termios *tp, int speed, struct options *op) +static void termios_init(struct termios *tp, int speed) { speed_t ispeed, ospeed; /* @@ -278,7 +276,7 @@ static void termios_init(struct termios *tp, int speed, struct options *op) ospeed = cfgetospeed(tp); } tp->c_cflag = CS8 | HUPCL | CREAD; - if (op->flags & F_LOCAL) + if (option_mask32 & F_LOCAL) tp->c_cflag |= CLOCAL; cfsetispeed(tp, ispeed); cfsetospeed(tp, ospeed); @@ -293,7 +291,7 @@ static void termios_init(struct termios *tp, int speed, struct options *op) /* Optionally enable hardware flow control */ #ifdef CRTSCTS - if (op->flags & F_RTSCTS) + if (option_mask32 & F_RTSCTS) tp->c_cflag |= CRTSCTS; #endif @@ -364,7 +362,8 @@ static void auto_baud(char *buf, unsigned size_buf, struct termios *tp) static void do_prompt(struct options *op) { #ifdef ISSUE - print_login_issue(op->issue, op->tty); + if (!(option_mask32 & F_NOISSUE)) + print_login_issue(op->issue, op->tty); #endif print_login_prompt(); } @@ -429,7 +428,7 @@ static char *get_logname(char *logname, unsigned size_logname, return NULL; /* Do parity bit handling. */ - if (!(op->flags & F_LOCAL) && (c & 0x80)) { /* "parity" bit on? */ + if (!(option_mask32 & F_LOCAL) && (c & 0x80)) { /* "parity" bit on? */ bits = 1; mask = 1; while (mask & 0x7f) { @@ -499,7 +498,7 @@ static char *get_logname(char *logname, unsigned size_logname, } /* termios_final - set the final tty mode bits */ -static void termios_final(struct options *op, struct termios *tp, struct chardata *cp) +static void termios_final(struct termios *tp, struct chardata *cp) { /* General terminal-independent stuff. */ tp->c_iflag |= IXON | IXOFF; /* 2-way flow control */ @@ -554,7 +553,7 @@ static void termios_final(struct options *op, struct termios *tp, struct chardat #endif /* Optionally enable hardware flow control */ #ifdef CRTSCTS - if (op->flags & F_RTSCTS) + if (option_mask32 & F_RTSCTS) tp->c_cflag |= CRTSCTS; #endif @@ -655,24 +654,24 @@ int getty_main(int argc UNUSED_PARAM, char **argv) /* Initialize the termios settings (raw mode, eight-bit, blocking i/o). */ debug("calling termios_init\n"); - termios_init(&termios, options.speeds[0], &options); + termios_init(&termios, options.speeds[0]); /* Write the modem init string and DON'T flush the buffers */ - if (options.flags & F_INITSTRING) { + if (option_mask32 & F_INITSTRING) { debug("writing init string\n"); full_write1_str(options.initstring); } /* Optionally detect the baud rate from the modem status message */ debug("before autobaud\n"); - if (options.flags & F_PARSE) + if (option_mask32 & F_PARSE) auto_baud(line_buf, sizeof(line_buf), &termios); /* Set the optional timer */ alarm(options.timeout); /* if 0, alarm is not set */ /* Optionally wait for CR or LF before writing /etc/issue */ - if (options.flags & F_WAITCRLF) { + if (option_mask32 & F_WAITCRLF) { char ch; debug("waiting for cr-lf\n"); @@ -685,7 +684,7 @@ int getty_main(int argc UNUSED_PARAM, char **argv) } logname = NULL; - if (!(options.flags & F_NOPROMPT)) { + if (!(option_mask32 & F_NOPROMPT)) { /* NB:termios_init already set line speed * to options.speeds[0] */ int baud_index = 0; @@ -709,7 +708,7 @@ int getty_main(int argc UNUSED_PARAM, char **argv) alarm(0); /* Finalize the termios settings. */ - termios_final(&options, &termios, &chardata); + termios_final(&termios, &chardata); /* Now the newline character should be properly written. */ full_write(STDOUT_FILENO, "\n", 1); -- cgit v1.2.3