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authorIsaac Dunham <ibid.ag@gmail.com>2014-04-12 23:26:50 -0500
committerIsaac Dunham <ibid.ag@gmail.com>2014-04-12 23:26:50 -0500
commit8b6d56c4f75efed9d4769d2d959ee7706e314152 (patch)
treea8da977506d527afbf726494f1dcac3baadebed9 /toys/pending/getty.c
parentcbd775281d54e35e28a547bb49020fec75dc0f10 (diff)
downloadtoybox-8b6d56c4f75efed9d4769d2d959ee7706e314152.tar.gz
getty: build fix, clean up messages, simplify code
build fix: xmsprintf has been renamed shorten and lowercase the error messages use xexec() instead of execlp(); perror_exit(); remove redundant variable setting
Diffstat (limited to 'toys/pending/getty.c')
-rw-r--r--toys/pending/getty.c42
1 files changed, 19 insertions, 23 deletions
diff --git a/toys/pending/getty.c b/toys/pending/getty.c
index 8182923a..abe9bca5 100644
--- a/toys/pending/getty.c
+++ b/toys/pending/getty.c
@@ -98,8 +98,8 @@ static void get_speed(char *sp)
TT.sc = 0;
while ((ptr = strsep(&sp, ","))) {
TT.speeds[TT.sc] = encode(ptr);
- if (TT.speeds[TT.sc] < 0) perror_exit("Bad Speed");
- if (++TT.sc > 10) perror_exit("Too many alternate speeds, Max is 10");
+ if (TT.speeds[TT.sc] < 0) perror_exit("bad speed");
+ if (++TT.sc > 10) perror_exit("too many speeds, max is 10");
}
}
@@ -108,9 +108,9 @@ static void parse_arguments(void)
{
if (isdigit(**toys.optargs)) {
get_speed(*toys.optargs);
- if (*++toys.optargs) TT.tty_name = xmsprintf("%s", *toys.optargs);
+ if (*++toys.optargs) TT.tty_name = xmprintf("%s", *toys.optargs);
} else {
- TT.tty_name = xmsprintf("%s", *toys.optargs);
+ TT.tty_name = xmprintf("%s", *toys.optargs);
if (*++toys.optargs) get_speed(*toys.optargs);
}
if (*++toys.optargs) setenv("TERM", *toys.optargs, 1);
@@ -120,29 +120,26 @@ static void parse_arguments(void)
static void open_tty(void)
{
if (strcmp(TT.tty_name, "-")) {
- if (*(TT.tty_name) != '/') TT.tty_name = xmsprintf("/dev/%s", TT.tty_name);
+ if (*(TT.tty_name) != '/') TT.tty_name = xmprintf("/dev/%s", TT.tty_name);
// Sends SIGHUP to all foreground process if Session leader don't die,Ignore
sighandler_t sig = signal(SIGHUP, SIG_IGN);
ioctl(0, TIOCNOTTY, 0); // Giveup if there is any controlling terminal
signal(SIGHUP, sig);
- if (setsid() < 0) { // Seems we are session leader
- pid_t sid = getpid();
-
- if(sid != getsid(0)) perror_exit("setsid");
- }
+ if ((setsid() < 0) && (getpid() != getsid(0)))
+ perror_exit("setsid");
xclose(0);
xopen(TT.tty_name, O_RDWR|O_NDELAY);
fcntl(0, F_SETFL, fcntl(0, F_GETFL) & ~O_NONBLOCK); // Block read
dup2(0, 1);
dup2(0, 2);
if (ioctl(0, TIOCSCTTY, 1) < 0) perror_msg("ioctl(TIOCSCTTY)");
- if (!isatty(0)) perror_exit("/dev/%s:Not a character device", TT.tty_name);
+ if (!isatty(0)) perror_exit("/dev/%s: not a tty", TT.tty_name);
chown(TT.tty_name, 0, 0); // change ownership, Hope login will change this
chmod(TT.tty_name, 0620);
} else { // We already have opened TTY
- if (setsid() < 0) perror_msg("setsid:failed");
+ if (setsid() < 0) perror_msg("setsid failed");
if ((fcntl(0, F_GETFL) & (O_RDWR|O_RDONLY|O_WRONLY)) != O_RDWR)
- perror_exit("opened tty don't have read/write permission");
+ perror_exit("no read/write permission");
}
}
@@ -161,7 +158,6 @@ static void termios_init(void)
TT.termios.c_cc[VMIN] = 1;
TT.termios.c_oflag = OPOST|ONLCR;
TT.termios.c_cflag |= CS8|CREAD|HUPCL|CBAUDEX;
- TT.termios.c_iflag = 0;
// login will disable echo for passwd.
TT.termios.c_lflag |= ISIG|ICANON|ECHO|ECHOE|ECHOK|ECHOKE;
TT.termios.c_cc[VINTR] = CTL('C');
@@ -170,7 +166,7 @@ static void termios_init(void)
TT.termios.c_cc[VEOL] = '\n';
TT.termios.c_cc[VKILL] = CTL('U');
TT.termios.c_cc[VERASE] = CERASE;
- TT.termios.c_iflag |= ICRNL|IXON|IXOFF;
+ TT.termios.c_iflag = ICRNL|IXON|IXOFF;
// set non-zero baud rate. Zero baud rate left it unchanged.
if (TT.speeds[0] != B0) cfsetspeed(&TT.termios, TT.speeds[0]);
if (tcsetattr(STDIN_FILENO, TCSANOW, &TT.termios) < 0)
@@ -213,7 +209,7 @@ void print_prompt(void)
uname(&uts);
hostname = xstrdup(uts.nodename);
fputs(hostname, stdout);
- fputs(" Login: ", stdout);
+ fputs(" login: ", stdout);
fflush(NULL);
free(hostname);
hostname = NULL;
@@ -269,6 +265,7 @@ static void utmp_entry(void)
struct utmp entry;
struct utmp *utp_ptr;
pid_t pid = getpid();
+ char *utmperr = "can't make utmp entry, host length greater than UT_HOSTSIZE(256)";
utmpname(_PATH_UTMP);
setutent(); // Starts from start
@@ -282,7 +279,7 @@ static void utmp_entry(void)
time((time_t *)&entry.ut_time);
xstrncpy(entry.ut_user, "LOGIN", UT_NAMESIZE);
if (strlen(TT.host_str) > UT_HOSTSIZE)
- perror_msg("Can't make utmp entry, Host length is greater than UT_HOSTSIZE(256)");
+ perror_msg(utmperr);
else xstrncpy(entry.ut_host, TT.host_str, UT_HOSTSIZE);
setutent();
pututline(&entry);
@@ -291,7 +288,7 @@ static void utmp_entry(void)
xstrncpy(entry.ut_line, ttyname(STDIN_FILENO) + strlen("/dev/"), UT_LINESIZE);
xstrncpy(entry.ut_user, "LOGIN", UT_NAMESIZE);
if (strlen(TT.host_str) > UT_HOSTSIZE)
- perror_msg("Can't make utmp entry,Host length is greater than UT_HOSTSIZE(256)");
+ perror_msg(utmperr);
else xstrncpy(entry.ut_host, TT.host_str, UT_HOSTSIZE);
time((time_t *)&entry.ut_time);
setutent();
@@ -301,7 +298,7 @@ static void utmp_entry(void)
void getty_main(void)
{
pid_t pid = getpid();
- char *ptr[2] = {"/bin/login", NULL};
+ char *ptr[3] = {"/bin/login", NULL, NULL}; //2 NULLs so we can add username
if (!(toys.optflags & FLAG_f)) TT.issue_str = "/etc/issue";
if (toys.optflags & FLAG_l) ptr[0] = TT.login_str;
@@ -333,8 +330,7 @@ void getty_main(void)
if (tcsetattr(STDIN_FILENO, TCSANOW, &TT.termios) < 0)
perror_exit("tcsetattr");
}
+ ptr[1]=TT.buff; //put the username in the login command line
}
- if (toys.optflags & FLAG_n) execlp(*ptr, *ptr ,NULL);
- else execlp(*ptr, *ptr, TT.buff, NULL);
- perror_exit("error:%d",errno); // exec will return only if error
-} \ No newline at end of file
+ xexec(ptr);
+}