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-rw-r--r--loginutils/getty.c91
1 files changed, 47 insertions, 44 deletions
diff --git a/loginutils/getty.c b/loginutils/getty.c
index d279dc3..f2bff06 100644
--- a/loginutils/getty.c
+++ b/loginutils/getty.c
@@ -50,7 +50,7 @@ extern void updwtmp(const char *filename, const struct utmp *ut);
* and for line editing at the same time.
*/
-#ifdef SYSV_STYLE
+#ifdef SYSV_STYLE
#include <sys/utsname.h>
#include <time.h>
#endif
@@ -147,7 +147,7 @@ struct chardata {
/* Initial values for the above. */
-static struct chardata init_chardata = {
+static const struct chardata init_chardata = {
DEF_ERASE, /* default erase character */
DEF_KILL, /* default kill character */
13, /* default eol char */
@@ -161,7 +161,7 @@ struct Speedtab {
int code;
};
-static struct Speedtab speedtab[] = {
+static const struct Speedtab speedtab[] = {
{50, B50},
{75, B75},
{110, B110},
@@ -201,7 +201,7 @@ static struct Speedtab speedtab[] = {
#endif
-#ifdef SYSV_STYLE
+#ifdef SYSV_STYLE
#ifdef CONFIG_FEATURE_UTMP
static void update_utmp(char *line);
#endif
@@ -262,7 +262,7 @@ static void parse_args(int argc, char **argv, struct options *op)
op->flags = getopt32(argc, argv, opt_string,
&(op->initstring), &fakehost, &(op->issue),
&(op->login), &ts);
- if(op->flags & F_INITSTRING) {
+ if (op->flags & F_INITSTRING) {
const char *p = op->initstring;
char *q;
@@ -280,33 +280,34 @@ static void parse_args(int argc, char **argv, struct options *op)
*q = '\0';
}
op->flags ^= F_ISSUE; /* revert flag show /etc/issue */
- if(op->flags & F_TIMEOUT) {
+ if (op->flags & F_TIMEOUT) {
op->timeout = xatoul_range(ts, 1, INT_MAX);
}
+ argv += optind;
+ argc -= optind;
debug("after getopt loop\n");
- if (argc < optind + 2) /* check parameter count */
+ if (argc < 2) /* check parameter count */
bb_show_usage();
/* we loosen up a bit and accept both "baudrate tty" and "tty baudrate" */
- if ('0' <= argv[optind][0] && argv[optind][0] <= '9') {
+ if ('0' <= argv[0][0] && argv[0][0] <= '9') {
/* a number first, assume it's a speed (BSD style) */
- parse_speeds(op, argv[optind++]); /* baud rate(s) */
- op->tty = argv[optind]; /* tty name */
+ parse_speeds(op, argv[0]); /* baud rate(s) */
+ op->tty = argv[1]; /* tty name */
} else {
- op->tty = argv[optind++]; /* tty name */
- parse_speeds(op, argv[optind]); /* baud rate(s) */
+ op->tty = argv[0]; /* tty name */
+ parse_speeds(op, argv[1]); /* baud rate(s) */
}
- optind++;
- if (argc > optind && argv[optind])
- setenv("TERM", argv[optind], 1);
+ if (argc > 2 && argv[2])
+ setenv("TERM", argv[2], 1);
debug("exiting parseargs\n");
}
static void xdup2(int srcfd, int dstfd, const char *tty)
{
- if(dup2(srcfd, dstfd) == -1)
+ if (dup2(srcfd, dstfd) == -1)
bb_perror_msg_and_die("%s: dup", tty);
}
@@ -333,7 +334,7 @@ static void open_tty(char *tty, struct termio *tp, int local)
debug("open(2)\n");
fd = xopen(tty, O_RDWR | O_NONBLOCK);
- if(fd) {
+ if (fd) {
xdup2(fd, 0, tty);
close(fd);
}
@@ -372,12 +373,14 @@ static void open_tty(char *tty, struct termio *tp, int local)
*/
#ifdef DEBIAN
+#warning Debian /dev/vcs[a]NN hack is deprecated and will be removed
{
/* tty to root.dialout 660 */
struct group *gr;
int id;
- id = (gr = getgrnam("dialout")) ? gr->gr_gid : 0;
+ gr = getgrnam("dialout");
+ id = gr ? gr->gr_gid : 0;
chown(tty, 0, id);
chmod(tty, 0660);
@@ -491,7 +494,8 @@ static void auto_baud(struct termio *tp)
*/
(void) sleep(1);
- if ((nread = read(0, buf, sizeof(buf) - 1)) > 0) {
+ nread = read(0, buf, sizeof(buf) - 1);
+ if (nread > 0) {
buf[nread] = '\0';
for (bp = buf; bp < buf + nread; bp++) {
if (isascii(*bp) && isdigit(*bp)) {
@@ -536,15 +540,10 @@ static void do_prompt(struct options *op, struct termio *tp)
/* returns 1 if true, 0 if false */
static int caps_lock(const char *s)
{
- int capslock;
-
- for (capslock = 0; *s; s++) {
- if (islower(*s))
- return (0);
- if (capslock == 0)
- capslock = isupper(*s);
- }
- return (capslock);
+ while (*s)
+ if (islower(*s++))
+ return 0;
+ return 1;
}
#define logname bb_common_bufsiz1
@@ -557,7 +556,7 @@ static char *get_logname(struct options *op, struct chardata *cp, struct termio
char ascval; /* low 7 bits of input character */
int bits; /* # of "1" bits per character */
int mask; /* mask with 1 bit up */
- static char *erase[] = { /* backspace-space-backspace */
+ static const char *const erase[] = { /* backspace-space-backspace */
"\010\040\010", /* space parity */
"\010\040\010", /* odd parity */
"\210\240\210", /* even parity */
@@ -575,7 +574,8 @@ static char *get_logname(struct options *op, struct chardata *cp, struct termio
/* Prompt for and read a login name. */
- for (*logname = 0; *logname == 0; /* void */ ) {
+ *logname = 0;
+ while (*logname) {
/* Write issue file and prompt, with "parity" bit == 0. */
@@ -583,7 +583,9 @@ static char *get_logname(struct options *op, struct chardata *cp, struct termio
/* Read name, watch for break, parity, erase, kill, end-of-line. */
- for (bp = logname, cp->eol = 0; cp->eol == 0; /* void */ ) {
+ bp = logname;
+ cp->eol = 0;
+ while (cp->eol == 0) {
/* Do not report trivial EINTR/EIO errors. */
@@ -594,13 +596,13 @@ static char *get_logname(struct options *op, struct chardata *cp, struct termio
}
/* Do BREAK handling elsewhere. */
- if ((c == 0) && op->numspeed > 1)
- /* return (0); */
+ if (c == 0 && op->numspeed > 1)
return NULL;
/* Do parity bit handling. */
- if (c != (ascval = (c & 0177))) { /* "parity" bit on ? */
+ ascval = c & 0177;
+ if (c != ascval) { /* "parity" bit on ? */
for (bits = 1, mask = 1; mask & 0177; mask <<= 1)
if (mask & ascval)
bits++; /* count "1" bits */
@@ -648,12 +650,13 @@ static char *get_logname(struct options *op, struct chardata *cp, struct termio
}
/* Handle names with upper case and no lower case. */
- if ((cp->capslock = caps_lock(logname))) {
+ cp->capslock = caps_lock(logname);
+ if (cp->capslock) {
for (bp = logname; *bp; bp++)
if (isupper(*bp))
*bp = tolower(*bp); /* map name to lower case */
}
- return (logname);
+ return logname;
}
/* termio_final - set the final tty mode bits */
@@ -746,8 +749,8 @@ static void update_utmp(char *line)
utmpname(_PATH_UTMP);
setutent();
while ((utp = getutent())
- && !(utp->ut_type == INIT_PROCESS && utp->ut_pid == mypid)) /* nothing */
- ;
+ && !(utp->ut_type == INIT_PROCESS && utp->ut_pid == mypid))
+ /* nothing */;
if (utp) {
memcpy(&ut, utp, sizeof(ut));
@@ -756,7 +759,7 @@ static void update_utmp(char *line)
memset(&ut, 0, sizeof(ut));
safe_strncpy(ut.ut_id, line + 3, sizeof(ut.ut_id));
}
- /*endutent(); */
+ /* endutent(); */
strcpy(ut.ut_user, "LOGIN");
safe_strncpy(ut.ut_line, line, sizeof(ut.ut_line));
@@ -808,20 +811,21 @@ int getty_main(int argc, char **argv)
close(0);
close(1);
close(2);
+ logmode = LOGMODE_NONE;
#ifdef __linux__
setsid();
#endif
- /* We want special flavor of error_msg_and_die */
- die_sleep = 10;
- msg_eol = "\r\n";
/* Was "/dev/console". Why should we spam *system console*
* if there is a problem with getty on /dev/ttyS15?... */
nullfd = xopen(bb_dev_null, O_RDWR);
dup2(nullfd, 0);
dup2(nullfd, 1);
dup2(nullfd, 2);
- if(nullfd > 2)
+ if (nullfd > 2)
close(nullfd);
+ /* We want special flavor of error_msg_and_die */
+ die_sleep = 10;
+ msg_eol = "\r\n";
openlog(applet_name, LOG_PID, LOG_AUTH);
logmode = LOGMODE_BOTH;
@@ -927,4 +931,3 @@ int getty_main(int argc, char **argv)
(void) execl(options.login, options.login, "--", logname, (char *) 0);
bb_error_msg_and_die("%s: can't exec %s", options.tty, options.login);
}
-
generated by cgit v1.1 at 2024-12-29 06:02:30 +0000