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Diffstat (limited to 'networking')
-rw-r--r--networking/inetd.c288
1 files changed, 146 insertions, 142 deletions
diff --git a/networking/inetd.c b/networking/inetd.c
index 84d15438f..6980a9003 100644
--- a/networking/inetd.c
+++ b/networking/inetd.c
@@ -830,160 +830,164 @@ extern int inetd_main(int argc, char *argv[])
}
for (;;) {
- int n, ctrl;
- fd_set readable;
-
- if (nsock == 0) {
- sigprocmask(SIG_BLOCK, &blockmask, NULL);
- while (nsock == 0)
- sigsuspend(&emptymask);
- sigprocmask(SIG_SETMASK, &emptymask, NULL);
- }
- readable = allsock;
- if ((n = select(maxsock + 1, &readable, (fd_set *)0,
- (fd_set *)0, (struct timeval *)0)) <= 0) {
- if (n < 0 && errno != EINTR)
- syslog(LOG_WARNING, "select: %m");
- sleep(1);
- continue;
- }
- for (sep = servtab; n && sep; sep = sep->se_next)
- if (sep->se_fd != -1 && FD_ISSET(sep->se_fd, &readable)) {
- n--;
- if (!sep->se_wait && sep->se_socktype == SOCK_STREAM) {
- /* Fixed AGC */
- fcntl(sep->se_fd, F_SETFL, O_NDELAY);
- /* --------- */
- ctrl = accept(sep->se_fd, NULL, NULL);
- fcntl(sep->se_fd, F_SETFL, 0);
- if (ctrl < 0) {
- if (errno == EINTR || errno == EWOULDBLOCK)
- continue;
- syslog(LOG_WARNING, "accept (for %s): %m",
- sep->se_service);
- continue;
+ fd_set readable;
+ int ctrl;
+ int n;
+
+ if (nsock == 0) {
+ sigprocmask(SIG_BLOCK, &blockmask, NULL);
+ while (nsock == 0) {
+ sigsuspend(&emptymask);
}
- } else
- ctrl = sep->se_fd;
- sigprocmask(SIG_BLOCK, &blockmask, NULL);
- pid = 0;
+ sigprocmask(SIG_SETMASK, &emptymask, NULL);
+ }
+ readable = allsock;
+ n = select(maxsock + 1, &readable, (fd_set *)0, (fd_set *)0, (struct timeval *)0);
+ if (n <= 0) {
+ if (n < 0 && errno != EINTR) {
+ syslog(LOG_WARNING, "select: %m");
+ }
+ sleep(1);
+ continue;
+ }
+ for (sep = servtab; n && sep; sep = sep->se_next) {
+ if (sep->se_fd != -1 && FD_ISSET(sep->se_fd, &readable)) {
+ n--;
+ if (!sep->se_wait && sep->se_socktype == SOCK_STREAM) {
+ /* Fixed AGC */
+ fcntl(sep->se_fd, F_SETFL, O_NDELAY);
+ /* --------- */
+ ctrl = accept(sep->se_fd, NULL, NULL);
+ fcntl(sep->se_fd, F_SETFL, 0);
+ if (ctrl < 0) {
+ if (errno == EINTR || errno == EWOULDBLOCK) {
+ continue;
+ }
+ syslog(LOG_WARNING, "accept (for %s): %m",
+ sep->se_service);
+ continue;
+ }
+ } else {
+ ctrl = sep->se_fd;
+ }
+ sigprocmask(SIG_BLOCK, &blockmask, NULL);
+ pid = 0;
#ifdef INETD_FEATURE_ENABLED
- if (sep->se_bi == 0 || sep->se_bi->bi_fork)
+ if (sep->se_bi == 0 || sep->se_bi->bi_fork)
#endif
- {
- if (sep->se_count++ == 0)
- (void)gettimeofday(&sep->se_time, (struct timezone *)0);
- else if (sep->se_count >= sep->se_max) {
- struct timeval now;
-
- (void)gettimeofday(&now, (struct timezone *)0);
- if (now.tv_sec - sep->se_time.tv_sec >
- CNT_INTVL) {
- sep->se_time = now;
- sep->se_count = 1;
- } else {
- syslog(LOG_ERR,
- "%s/%s server failing (looping), service terminated",
- sep->se_service, sep->se_proto);
- FD_CLR(sep->se_fd, &allsock);
- (void) close(sep->se_fd);
- sep->se_fd = -1;
- sep->se_count = 0;
- nsock--;
- sigprocmask(SIG_SETMASK, &emptymask,
- NULL);
- if (!timingout) {
- timingout = 1;
- alarm(RETRYTIME);
+ {
+ if (sep->se_count++ == 0) {
+ gettimeofday(&sep->se_time, (struct timezone *)0);
+ }
+ else if (sep->se_count >= sep->se_max) {
+ struct timeval now;
+
+ gettimeofday(&now, (struct timezone *)0);
+ if (now.tv_sec - sep->se_time.tv_sec > CNT_INTVL) {
+ sep->se_time = now;
+ sep->se_count = 1;
+ } else {
+ syslog(LOG_ERR,
+ "%s/%s server failing (looping), service terminated",
+ sep->se_service, sep->se_proto);
+ FD_CLR(sep->se_fd, &allsock);
+ close(sep->se_fd);
+ sep->se_fd = -1;
+ sep->se_count = 0;
+ nsock--;
+ sigprocmask(SIG_SETMASK, &emptymask, NULL);
+ if (!timingout) {
+ timingout = 1;
+ alarm(RETRYTIME);
+ }
+ continue;
+ }
+ }
+ pid = fork();
+ if (pid < 0) {
+ syslog(LOG_ERR, "fork: %m");
+ if (sep->se_socktype == SOCK_STREAM) {
+ close(ctrl);
+ }
+ sigprocmask(SIG_SETMASK, &emptymask, NULL);
+ sleep(1);
+ continue;
+ }
+ if (pid && sep->se_wait) {
+ sep->se_wait = pid;
+ FD_CLR(sep->se_fd, &allsock);
+ nsock--;
}
- continue;
}
- }
- pid = fork();
- if (pid < 0) {
- syslog(LOG_ERR, "fork: %m");
- if (sep->se_socktype == SOCK_STREAM)
- close(ctrl);
sigprocmask(SIG_SETMASK, &emptymask, NULL);
- sleep(1);
- continue;
- }
- if (pid && sep->se_wait) {
- sep->se_wait = pid;
- FD_CLR(sep->se_fd, &allsock);
- nsock--;
- }
- }
- sigprocmask(SIG_SETMASK, &emptymask, NULL);
- if (pid == 0) {
+ if (pid == 0) {
#ifdef INETD_FEATURE_ENABLED
- if (sep->se_bi)
- (*sep->se_bi->bi_fn)(ctrl, sep);
- else
+ if (sep->se_bi) {
+ (*sep->se_bi->bi_fn)(ctrl, sep);
+ } else
#endif
- {
- struct passwd *pwd = getpwnam(sep->se_user);
- if (pwd == NULL) {
- syslog_err_and_discard_dg(
- sep->se_socktype,
- "getpwnam: %s: No such user",
- sep->se_user);
- }
- if (sep->se_group &&
- (grp = getgrnam(sep->se_group)) == NULL) {
- syslog_err_and_discard_dg(
- sep->se_socktype,
- "getgrnam: %s: No such group",
- sep->se_group);
- }
- /*
- * Ok. There are four cases here:
- * 1. nonroot user, no group specified
- * 2. nonroot user, some group specified
- * 3. root user, no group specified
- * 4. root user, some group specified
- * In cases 2 and 4 we setgid to the specified
- * group. In cases 1 and 2 we run initgroups
- * to run with the groups of the given user.
- * In case 4 we do setgroups to run with the
- * given group. In case 3 we do nothing.
- */
- if (pwd->pw_uid) {
- if (sep->se_group)
- pwd->pw_gid = grp->gr_gid;
- setgid((gid_t)pwd->pw_gid);
- initgroups(pwd->pw_name, pwd->pw_gid);
- setuid((uid_t)pwd->pw_uid);
- } else if (sep->se_group) {
- setgid((gid_t)grp->gr_gid);
- setgroups(1, &grp->gr_gid);
- }
- dup2(ctrl, 0);
- close(ctrl);
- dup2(0, 1);
- dup2(0, 2);
+ {
+ struct passwd *pwd = getpwnam(sep->se_user);
+ if (pwd == NULL) {
+ syslog_err_and_discard_dg(
+ sep->se_socktype,
+ "getpwnam: %s: No such user",
+ sep->se_user);
+ }
+ if (sep->se_group && (grp = getgrnam(sep->se_group)) == NULL) {
+ syslog_err_and_discard_dg(sep->se_socktype,
+ "getgrnam: %s: No such group", sep->se_group);
+ }
+ /*
+ * Ok. There are four cases here:
+ * 1. nonroot user, no group specified
+ * 2. nonroot user, some group specified
+ * 3. root user, no group specified
+ * 4. root user, some group specified
+ * In cases 2 and 4 we setgid to the specified
+ * group. In cases 1 and 2 we run initgroups
+ * to run with the groups of the given user.
+ * In case 4 we do setgroups to run with the
+ * given group. In case 3 we do nothing.
+ */
+ if (pwd->pw_uid) {
+ if (sep->se_group) {
+ pwd->pw_gid = grp->gr_gid;
+ }
+ setgid((gid_t)pwd->pw_gid);
+ initgroups(pwd->pw_name, pwd->pw_gid);
+ setuid((uid_t)pwd->pw_uid);
+ } else if (sep->se_group) {
+ setgid((gid_t)grp->gr_gid);
+ setgroups(1, &grp->gr_gid);
+ }
+ dup2(ctrl, 0);
+ close(ctrl);
+ dup2(0, 1);
+ dup2(0, 2);
#ifdef RLIMIT_NOFILE
- if (rlim_ofile.rlim_cur != rlim_ofile_cur) {
- if (setrlimit(RLIMIT_NOFILE,
- &rlim_ofile) < 0)
- syslog(LOG_ERR,"setrlimit: %m");
- }
+ if (rlim_ofile.rlim_cur != rlim_ofile_cur) {
+ if (setrlimit(RLIMIT_NOFILE, &rlim_ofile) < 0) {
+ syslog(LOG_ERR,"setrlimit: %m");
+ }
+ }
#endif
- for (ctrl = rlim_ofile_cur-1; --ctrl > 2; )
- (void)close(ctrl);
-
- memset(&sa, 0, sizeof(sa));
- sa.sa_handler = SIG_DFL;
- sigaction(SIGPIPE, &sa, NULL);
-
- execv(sep->se_server, sep->se_argv);
- syslog_err_and_discard_dg(sep->se_socktype,
- "execv %s: %m", sep->se_server);
+ for (ctrl = rlim_ofile_cur-1; --ctrl > 2; ) {
+ (void)close(ctrl);
+ }
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_handler = SIG_DFL;
+ sigaction(SIGPIPE, &sa, NULL);
+
+ execv(sep->se_server, sep->se_argv);
+ syslog_err_and_discard_dg(sep->se_socktype, "execv %s: %m", sep->se_server);
+ }
+ }
+ if (!sep->se_wait && sep->se_socktype == SOCK_STREAM) {
+ close(ctrl);
+ }
}
}
- if (!sep->se_wait && sep->se_socktype == SOCK_STREAM)
- close(ctrl);
- }
}
}
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