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-rw-r--r--term-utils/agetty.c106
1 files changed, 99 insertions, 7 deletions
diff --git a/term-utils/agetty.c b/term-utils/agetty.c
index 64b2fd1ff..c8a439f05 100644
--- a/term-utils/agetty.c
+++ b/term-utils/agetty.c
@@ -93,7 +93,7 @@
#endif
/* Login prompt. */
-#define LOGIN " login: "
+#define LOGIN "login: "
#define ARRAY_SIZE_MAX 16 /* Numbers of args for login beside "-- \\u" */
/* Some shorthands for control characters. */
@@ -133,6 +133,8 @@ struct options {
int flags; /* toggle switches, see below */
int timeout; /* time-out period */
char *autolog; /* login the user automatically */
+ char *chdir; /* Chdir before the login */
+ char *chroot; /* Chroot before the login */
char *login; /* login program */
char *logopt; /* options for login program */
char *tty; /* name of tty */
@@ -140,6 +142,8 @@ struct options {
char *term; /* terminal type */
char *initstring; /* modem init string */
char *issue; /* alternative issue file */
+ int delay; /* Sleep seconds before prompt */
+ int nice; /* Run login with this priority */
int numspeed; /* number of baud rates to try */
speed_t speeds[MAX_SPEED]; /* baud rates to be tried */
};
@@ -160,6 +164,10 @@ struct options {
#define F_HANGUP (1<<13) /* Do call vhangup(2) */
#define F_UTF8 (1<<14) /* We can do UTF8 */
#define F_LOGINPAUSE (1<<15) /* Wait for any key before dropping login prompt */
+#define F_NOCLEAR (1<<16) /* Do not clear the screen before prompting */
+#define F_NONL (1<<17) /* No newline before issue */
+#define F_NOHOSTNAME (1<<18) /* Do not show the hostname */
+#define F_LONGHNAME (1<<19) /* Show Full qualified hostname */
#define serial_tty_option(opt, flag) \
(((opt)->flags & (F_VCONSOLE|(flag))) == (flag))
@@ -303,6 +311,9 @@ int main(int argc, char **argv)
update_utmp(&options);
#endif
+ if (options.delay)
+ sleep(options.delay);
+
debug("calling open_tty\n");
/* Open the tty as standard { input, output, error }. */
@@ -399,6 +410,22 @@ int main(int argc, char **argv)
mkarray(logarr, logcmd);
replacename(logarr, logname);
+ if (options.chroot) {
+ if (chroot(options.chroot) < 0)
+ log_err(_("%s: can't change root directory %s: %m"),
+ options.tty, options.chroot);
+ }
+ if (options.chdir) {
+ if (chdir(options.chdir) < 0)
+ log_err(_("%s: can't change working directory %s: %m"),
+ options.tty, options.chdir);
+ }
+ if (options.nice) {
+ if (nice(options.nice) < 0)
+ log_warn(_("%s: can't change process priority: %m"),
+ options.tty);
+ }
+
/* Let the login program take care of password validation. */
execv(options.login, logarr);
log_err(_("%s: can't exec %s: %m"), options.tty, options.login);
@@ -413,36 +440,49 @@ static void parse_args(int argc, char **argv, struct options *op)
enum {
VERSION_OPTION = CHAR_MAX + 1,
+ NOHOSTNAME_OPTION,
+ LONGHOSTNAME_OPTION,
HELP_OPTION
};
const struct option longopts[] = {
{ "8bits", no_argument, 0, '8' },
{ "autologin", required_argument, 0, 'a' },
{ "noreset", no_argument, 0, 'c' },
+ { "chdir", required_argument, 0, 'C' },
+ { "delay", required_argument, 0, 'd' },
{ "issue-file", required_argument, 0, 'f' },
{ "flow-control", no_argument, 0, 'h' },
{ "host", required_argument, 0, 'H' },
{ "noissue", no_argument, 0, 'i' },
{ "init-string", required_argument, 0, 'I' },
+ { "noclear", no_argument, 0, 'J' },
{ "login-program", required_argument, 0, 'l' },
+ { "login", required_argument, 0, 'l' }, /* compat option */
+ { "loginprog", required_argument, 0, 'l' }, /* compat option */
{ "local-line", no_argument, 0, 'L' },
{ "extract-baud", no_argument, 0, 'm' },
{ "skip-login", no_argument, 0, 'n' },
+ { "nonewline", no_argument, 0, 'N' },
{ "login-options", required_argument, 0, 'o' },
{ "loginopts", required_argument, 0, 'o' }, /* compat option */
{ "logopts", required_argument, 0, 'o' }, /* compat option */
{ "loginpause", no_argument, 0, 'p' },
+ { "nice", required_argument, 0, 'P' },
+ { "chroot", required_argument, 0, 'r' },
{ "hangup", no_argument, 0, 'R' },
{ "keep-baud", no_argument, 0, 's' },
{ "timeout", required_argument, 0, 't' },
{ "detect-case", no_argument, 0, 'U' },
{ "wait-cr", no_argument, 0, 'w' },
+ { "no-hostname", no_argument, 0, NOHOSTNAME_OPTION },
+ { "nohostname", no_argument, 0, NOHOSTNAME_OPTION }, /* compat option */
+ { "long-hostname", no_argument, 0, LONGHOSTNAME_OPTION },
{ "version", no_argument, 0, VERSION_OPTION },
{ "help", no_argument, 0, HELP_OPTION },
{ NULL, 0, 0, 0 }
};
- while ((c = getopt_long(argc, argv, "8a:cf:hH:iI:l:Lmno:pRst:Uw", longopts,
+ while ((c = getopt_long(argc, argv, "8a:cC:d:f:hH:iI:Jl:LmnNo:pP:r:Rst:Uw", longopts,
NULL)) != -1) {
switch (c) {
case '8':
@@ -454,6 +494,12 @@ static void parse_args(int argc, char **argv, struct options *op)
case 'c':
op->flags |= F_KEEPCFLAGS;
break;
+ case 'C':
+ op->chdir = optarg;
+ break;
+ case 'd':
+ op->delay = atoi(optarg);
+ break;
case 'f':
op->flags |= F_CUSTISSUE;
op->issue = optarg;
@@ -471,6 +517,9 @@ static void parse_args(int argc, char **argv, struct options *op)
init_special_char(optarg, op);
op->flags |= F_INITSTRING;
break;
+ case 'J':
+ op->flags |= F_NOCLEAR;
+ break;
case 'l':
op->login = optarg;
break;
@@ -489,6 +538,12 @@ static void parse_args(int argc, char **argv, struct options *op)
case 'p':
op->flags |= F_LOGINPAUSE;
break;
+ case 'P':
+ op->nice = atoi(optarg);
+ break;
+ case 'r':
+ op->chroot = optarg;
+ break;
case 'R':
op->flags |= F_HANGUP;
break;
@@ -505,6 +560,12 @@ static void parse_args(int argc, char **argv, struct options *op)
case 'w':
op->flags |= F_WAITCRLF;
break;
+ case NOHOSTNAME_OPTION:
+ op->flags |= F_NOHOSTNAME;
+ break;
+ case LONGHOSTNAME_OPTION:
+ op->flags |= F_LONGHNAME;
+ break;
case VERSION_OPTION:
printf(_("%s from %s\n"), program_invocation_short_name,
PACKAGE_STRING);
@@ -868,6 +929,18 @@ static void termio_init(struct options *op, struct termios *tp)
if ((tp->c_cflag & (CS8|PARODD|PARENB)) == CS8)
op->flags |= F_EIGHTBITS;
+ if ((op->flags & F_NOCLEAR) == 0) {
+ /*
+ * Do not write a full reset (ESC c) because this destroys
+ * the unicode mode again if the terminal was in unicode
+ * mode. Also it clears the CONSOLE_MAGIC features which
+ * are required for some languages/console-fonts.
+ * Just put the cursor to the home position (ESC [ H),
+ * erase everything below the cursor (ESC [ J), and set the
+ * scrolling region to the full window (ESC [ r)
+ */
+ write_all(STDOUT_FILENO, "\033[r\033[H\033[J", 9);
+ }
return;
}
@@ -1074,8 +1147,10 @@ static void do_prompt(struct options *op, struct termios *tp)
FILE *fd;
#endif /* ISSUE */
- /* Issue not in use, start with a new line. */
- write_all(STDOUT_FILENO, "\r\n", 2);
+ if ((op->flags & F_NONL) == 0) {
+ /* Issue not in use, start with a new line. */
+ write_all(STDOUT_FILENO, "\r\n", 2);
+ }
#ifdef ISSUE
if ((op->flags & F_ISSUE) && (fd = fopen(op->issue, "r"))) {
@@ -1161,10 +1236,23 @@ static void do_prompt(struct options *op, struct termios *tp)
}
}
#endif /* KDGKBLED */
- {
+ if ((op->flags & F_NOHOSTNAME) == 0) {
char hn[MAXHOSTNAMELEN + 1];
- if (gethostname(hn, sizeof(hn)) == 0)
- write_all(STDOUT_FILENO, hn, strlen(hn));
+ if (gethostname(hn, sizeof(hn)) == 0) {
+ struct hostent *ht;
+ char *dot = strchr(hn, '.');
+
+ hn[MAXHOSTNAMELEN] = '\0';
+ if ((op->flags & F_LONGHNAME) == 0) {
+ if (dot)
+ *dot = '\0';
+ write_all(STDOUT_FILENO, hn, strlen(hn));
+ } else if (dot == NULL && (ht = gethostbyname(hn)))
+ write_all(STDOUT_FILENO, ht->h_name, strlen(ht->h_name));
+ else
+ write_all(STDOUT_FILENO, hn, strlen(hn));
+ write_all(STDOUT_FILENO, " ", 1);
+ }
}
if (op->autolog == (char*)0) {
/* Always show login prompt. */
@@ -1474,6 +1562,10 @@ static void __attribute__ ((__noreturn__)) usage(FILE * out)
" -t, --timeout NUMBER login process timeout\n"
" -U, --detect-case detect uppercase terminal\n"
" -w, --wait-cr wait carriage-return\n"
+ " --noclear do not clear the screen before prompt\n"
+ " --nonewline do not print a newline before issue\n"
+ " --no-hostname no hostname at all will be shown\n"
+ " --long-hostname show full qualified hostname\n"
" --version output version information and exit\n"
" --help display this help and exit\n\n"));
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-05-23 13:21:40 +0200