path: root/include
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authorRich Felker <>2013-08-14 17:58:20 -0400
committerRich Felker <>2013-08-14 17:58:20 -0400
commitfcc522c92335783293ac19df318415cd97fbf66b (patch)
tree35de93be8123cb7cd075994087d132e3c8bbb906 /include
parentcccc1844be95549e5b6c91ffc1f2c2ba3d3aab16 (diff)
de-duplicate dn_expand, fix return value and signature, clean up
the duplicate code in dn_expand and its incorrect return values are both results of the history of the code: the version in __dns.c was originally written with no awareness of the legacy resolver API, and was later copy-and-paste duplicated to provide the legacy API. this commit is the first of a series that will restructure the internal dns code to share as much code as possible with the legacy resolver API functions. I have also removed the loop detection logic, since the output buffer length limit naturally prevents loops. in order to avoid long runtime when encountering a loop if the caller provided a ridiculously long buffer, the caller-provided length is clamped at the maximum dns name length.
Diffstat (limited to 'include')
1 files changed, 1 insertions, 1 deletions
diff --git a/include/resolv.h b/include/resolv.h
index cdedd274..259e4bc1 100644
--- a/include/resolv.h
+++ b/include/resolv.h
@@ -134,7 +134,7 @@ int res_search(const char *, int, int, unsigned char *, int);
int res_mkquery(int, const char *, int, int, char *, int, struct rrec *, char *, int);
int res_send(const char *, int, char *, int);
int dn_comp(unsigned char *, unsigned char *, int, unsigned char **, unsigned char *, unsigned char **);
-int dn_expand(unsigned char *, unsigned char *, unsigned char *, unsigned char *, int);
+int dn_expand(const unsigned char *, const unsigned char *, const unsigned char *, char *, int);
int dn_skipname(const unsigned char *, const unsigned char *);
#ifdef __cplusplus