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-rw-r--r--include/resolv.h33
1 files changed, 26 insertions, 7 deletions
diff --git a/include/resolv.h b/include/resolv.h
index 6651dded9..d5168770d 100644
--- a/include/resolv.h
+++ b/include/resolv.h
@@ -118,10 +118,9 @@ struct __res_state {
int retry; /* number of times to retransmit */
#endif
u_int32_t options; /* (was: ulong) option flags - see below. */
- struct sockaddr_in
- nsaddr_list[MAXNS]; /* address of name server */
+ struct sockaddr_in nsaddr_list[MAXNS]; /* address of name server */
#define nsaddr nsaddr_list[0] /* for backward compatibility */
- char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
+ char *dnsrch[MAXDNSRCH + 1]; /* components of domain to search */
#ifdef __UCLIBC_HAS_COMPAT_RES_STATE__
/* googling for "_res.defdname" says it's still sometimes used.
* Pity. It's huge, I want to move it to EXTRA_COMPAT... */
@@ -138,18 +137,38 @@ struct __res_state {
struct in_addr addr;
u_int32_t mask;
} sort_list[MAXRESOLVSORT];
+#endif
+
+#ifdef __UCLIBC_HAS_IPV6__
+ /* I assume that the intention is to store all
+ * DNS servers' addresses here, and duplicate in nsaddr_list[]
+ * those which have IPv4 address. In the case of IPv4 address
+ * _u._ext.nsaddrs[x] will point to some nsaddr_list[y],
+ * otherwise it will point into malloc'ed sockaddr_in6.
+ * nscount is the number of IPv4 addresses and _u._ext.nscount
+ * is the number of addresses of all kinds.
+ *
+ * If this differs from established usage and you need
+ * to change this, please describe how is it supposed to work.
+ */
union {
struct {
- u_int16_t nscount;
- u_int16_t nstimes[MAXNS]; /* ms. */
+ struct sockaddr_in6 *nsaddrs[MAXNS];
+ u_int8_t nscount; /* (was: u_int16_t) */
+#ifdef __UCLIBC_HAS_COMPAT_RES_STATE__
+ /* rather obscure, and differs in BSD and glibc */
+ u_int16_t nstimes[MAXNS];
int nssocks[MAXNS];
- /* below: not in xBSD. glibc only? */
u_int16_t nscount6;
u_int16_t nsinit;
- struct sockaddr_in6 *nsaddrs[MAXNS];
+ /* glibc also has: */
+ /*u_int16_t nsmap[MAXNS];*/
+ /*unsigned long long initstamp;*/
+#endif
} _ext;
} _u;
#endif
+
#ifdef __UCLIBC_HAS_EXTRA_COMPAT_RES_STATE__
/* Truly obscure stuff.
* Googling for "_res.XXX" for these members