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| author | Timo Teräs <timo.teras@iki.fi> | 2011-12-23 14:15:16 +0100 |
|---|---|---|
| committer | Natanael Copa <ncopa@alpinelinux.org> | 2011-12-23 14:16:47 +0100 |
| commit | 811e804c7a403783b0c4cc5eb75f24da809081d8 (patch) | |
| tree | ebdbbe87f471ba4cd42d85398dd934400d9ffe49 | |
| parent | 3fb4bfcafbcaff3522e7bab48ff03460fec99023 (diff) | |
| download | uClibc-alpine-811e804c7a403783b0c4cc5eb75f24da809081d8.tar.bz2 uClibc-alpine-811e804c7a403783b0c4cc5eb75f24da809081d8.tar.xz | |
resolv: res_query for CNAMEs
From: http://lists.busybox.net/pipermail/uclibc/2009-June/042583.html
I had postfix failing for domains with MX->CNAME->A chain. In glibc it works.
I tracked it to be a problem in uclibc res_query. It returns bogus data
for CNAME entries, apparently intentionally, which is wrong.
glibc return CNAME entries even for CNAME queries and most applications rely
on this. So we should do the same in uclibc.
Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
| -rw-r--r-- | libc/inet/resolv.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/libc/inet/resolv.c b/libc/inet/resolv.c index 021d5bf5d..2371fb952 100644 --- a/libc/inet/resolv.c +++ b/libc/inet/resolv.c @@ -3099,11 +3099,9 @@ int res_query(const char *dname, int class, int type, free(a.dotted); - if (a.atype == type) { /* CNAME */ - if (i > anslen) - i = anslen; - memcpy(answer, packet, i); - } + i = MIN(anslen, i); + memcpy(answer, packet, i); + free(packet); return i; } |