diff options
Diffstat (limited to 'libc/inet')
| -rw-r--r-- | libc/inet/resolv.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/libc/inet/resolv.c b/libc/inet/resolv.c index f73329a92..044059d7d 100644 --- a/libc/inet/resolv.c +++ b/libc/inet/resolv.c @@ -754,8 +754,9 @@ static uint16_t static_id = 1; * a.rdata: points into *outpacket to 1st IP addr * NB: don't pass outpacket == NULL if you need to use a.rdata! * a.atype: type of query? - * a.dotted: numeric IP as a string (malloced, may be NULL if strdup failed) - * (which one of potentially many??) + * a.dotted: which name we _actually_ used. May contain search domains + * appended. (why the filed is called "dotted" I have no idea) + * This is a malloced string. May be NULL because strdup failed. */ int attribute_hidden __dns_lookup(const char *name, int type, int nscount, char **nsip, @@ -953,6 +954,18 @@ int attribute_hidden __dns_lookup(const char *name, int type, if (h.rcode == NXDOMAIN) { // bug 660 says we treat negative response as an error and retry // which is, eh, an error. :) We were incurring long delays because of this. + /* if possible, try next search domain */ + if (!ends_with_dot) { + int sdomains; + __UCLIBC_MUTEX_LOCK(__resolv_lock); + sdomains = __searchdomains; + __UCLIBC_MUTEX_UNLOCK(__resolv_lock); + if (variant < sdomains - 1) { + /* next search */ + variant++; + continue; + } + } /* this is not an error - don't goto again! */ h_errno = HOST_NOT_FOUND; goto fail1; @@ -1055,11 +1068,9 @@ int attribute_hidden __dns_lookup(const char *name, int type, /* if there are searchdomains, try them or fallback as passed */ if (!ends_with_dot) { int sdomains; - __UCLIBC_MUTEX_LOCK(__resolv_lock); sdomains = __searchdomains; __UCLIBC_MUTEX_UNLOCK(__resolv_lock); - if (variant < sdomains - 1) { /* next search */ variant++; |