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authorDenys Vlasenko <vda.linux@googlemail.com>2018-04-15 19:51:42 +0200
committerDenys Vlasenko <vda.linux@googlemail.com>2018-04-15 19:51:42 +0200
commit71e4b3f4824f94e6e9aae25222c41f8789d80fd6 (patch)
treeb187633934d2d087940513b1f5322a4e20548fa9
parentb74e490629a75cb8c2cb798f0feadc2eb4dc5471 (diff)
downloadbusybox-71e4b3f4824f94e6e9aae25222c41f8789d80fd6.tar.gz
nslookup: get rid of query::rlen field
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--networking/nslookup.c25
1 files changed, 15 insertions, 10 deletions
diff --git a/networking/nslookup.c b/networking/nslookup.c
index d1697f2fd..99f781e1b 100644
--- a/networking/nslookup.c
+++ b/networking/nslookup.c
@@ -263,7 +263,7 @@ struct ns {
struct query {
const char *name;
- unsigned qlen, rlen;
+ unsigned qlen;
// unsigned latency;
// uint8_t rcode;
unsigned char query[512];
@@ -560,8 +560,9 @@ static int send_queries(struct ns *ns)
if (tcur - tsent >= retry_interval) {
send:
for (qn = 0; qn < G.query_count; qn++) {
- if (G.query[qn].rlen)
- continue;
+ if (G.query[qn].qlen == 0)
+ continue; /* this one was replied already */
+
if (write(pfd.fd, G.query[qn].query, G.query[qn].qlen) < 0) {
bb_perror_msg("write to '%s'", ns->name);
n_replies = -1; /* "no go, try next server" */
@@ -614,7 +615,7 @@ static int send_queries(struct ns *ns)
}
}
- if (G.query[qn].rlen) {
+ if (G.query[qn].qlen == 0) {
dbg("dropped duplicate response to query %u\n", qn);
goto next;
}
@@ -634,7 +635,7 @@ static int send_queries(struct ns *ns)
}
/* Process reply */
- G.query[qn].rlen = recvlen;
+ G.query[qn].qlen = 0; /* flag: "reply received" */
tcur = monotonic_ms();
#if 1
if (option_mask32 & OPT_debug) {
@@ -733,8 +734,12 @@ static void add_query(int type, const char *dname)
dbg("new query#%u type %u for '%s'\n", count, type, dname);
new_q->name = dname;
- qlen = res_mkquery(QUERY, dname, C_IN, type, NULL, 0, NULL,
- new_q->query, sizeof(new_q->query));
+
+ qlen = res_mkquery(QUERY, dname, C_IN, type,
+ /*data:*/ NULL, /*datalen:*/ 0,
+ /*newrr:*/ NULL,
+ new_q->query, sizeof(new_q->query)
+ );
new_q->qlen = qlen;
}
@@ -913,13 +918,13 @@ int nslookup_main(int argc UNUSED_PARAM, char **argv)
err = 0;
for (rc = 0; rc < G.query_count; rc++) {
- if (G.query[rc].rlen == 0) {
+ if (G.query[rc].qlen) {
printf("*** Can't find %s: No answer\n", G.query[rc].name);
err = 1;
}
}
- if (err)
- bb_putchar('\n'); /* should this affect exicode too? */
+ if (err) /* should this affect exicode too? */
+ bb_putchar('\n');
if (ENABLE_FEATURE_CLEAN_UP) {
free(G.server);