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diff --git a/libexec/tftpd/tests/functional.c b/libexec/tftpd/tests/functional.c
--- a/libexec/tftpd/tests/functional.c
+++ b/libexec/tftpd/tests/functional.c
@@ -323,6 +323,7 @@
{
int client_s, server_s, pid, argv_idx;
char execname[] = "/usr/libexec/tftpd";
+ char b_flag_str[] = "-b";
char s_flag_str[] = "-s";
char w_flag_str[] = "-w";
char pwd[MAXPATHLEN];
@@ -382,6 +383,7 @@
bzero(argv, sizeof(argv));
argv[0] = execname;
argv_idx = 1;
+ argv[argv_idx++] = b_flag_str;
if (w_flag)
argv[argv_idx++] = w_flag_str;
if (s_flag)
diff --git a/libexec/tftpd/tftpd.c b/libexec/tftpd/tftpd.c
--- a/libexec/tftpd/tftpd.c
+++ b/libexec/tftpd/tftpd.c
@@ -121,15 +121,18 @@
struct passwd *nobody;
const char *chuser = "nobody";
char recvbuffer[MAXPKTSIZE];
- int allow_ro = 1, allow_wo = 1, on = 1;
+ int allow_ro = 1, allow_wo = 1, block = 0, on = 1;
pid_t pid;
tzset(); /* syslog in localtime */
acting_as_client = 0;
tftp_openlog("tftpd", LOG_PID | LOG_NDELAY, LOG_FTP);
- while ((ch = getopt(argc, argv, "cCd::F:lnoOp:s:Su:U:wW")) != -1) {
+ while ((ch = getopt(argc, argv, "bcCd::F:lnoOp:s:Su:U:wW")) != -1) {
switch (ch) {
+ case 'b':
+ block = 1;
+ break;
case 'c':
ipchroot = 1;
break;
@@ -213,14 +216,9 @@
umask(mask);
- if (ioctl(0, FIONBIO, &on) < 0) {
- tftp_log(LOG_ERR, "ioctl(FIONBIO): %s", strerror(errno));
- exit(1);
- }
-
/* Find out who we are talking to and what we are going to do */
peerlen = sizeof(peer_sock);
- n = recvfrom(0, recvbuffer, MAXPKTSIZE, 0,
+ n = recvfrom(0, recvbuffer, MAXPKTSIZE, block ? 0 : MSG_DONTWAIT,
(struct sockaddr *)&peer_sock, &peerlen);
if (n < 0) {
tftp_log(LOG_ERR, "recvfrom: %s", strerror(errno));
@@ -234,6 +232,11 @@
exit(1);
}
+ if (ioctl(0, FIONBIO, &on) < 0) {
+ tftp_log(LOG_ERR, "ioctl(FIONBIO): %s", strerror(errno));
+ exit(1);
+ }
+
/*
* Now that we have read the message out of the UDP
* socket, we fork and exit. Thus, inetd will go back

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