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| author | Alexandre Oliva <aoliva@redhat.com> | 2014-11-09 13:51:09 -0200 |
|---|---|---|
| committer | Alexandre Oliva <aoliva@redhat.com> | 2014-11-21 03:39:37 -0200 |
| commit | f3d945d5f2b9d7d44032c461af588c6d54f5664b (patch) | |
| tree | 6e365e94f4ef21ee5d608a5027d9daaa3d7c8af6 /resolv/res_query.c | |
| parent | 4969890247d7d6a548f17641ed5a18f4b713d211 (diff) | |
| download | glibc-f3d945d5f2b9d7d44032c461af588c6d54f5664b.tar.gz glibc-f3d945d5f2b9d7d44032c461af588c6d54f5664b.tar.xz glibc-f3d945d5f2b9d7d44032c461af588c6d54f5664b.zip | |
BZ#16469: don't drop trailing dot in res_nquerydomain(..., name, NULL, ...)
If we drop it here, we will fail to detect a duplicate trailing dot later on. Retaining, OTOH, has no ill effects whatsoever, and it even saves us the trouble of copying the domain name minus the trailing dot, like we used to do. for ChangeLog [BZ #16469] * NEWS: Update. * resolv/res_query.c (__libc_res_nquerydomain): Retain trailing dot. * posix/tst-getaddrinfo5.c: New. * posix/Makefile (tests): Add it.
Diffstat (limited to 'resolv/res_query.c')
| -rw-r--r-- | resolv/res_query.c | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/resolv/res_query.c b/resolv/res_query.c index e4ee2a6005..33eeeb70da 100644 --- a/resolv/res_query.c +++ b/resolv/res_query.c @@ -535,8 +535,7 @@ res_nsearch(res_state statp, libresolv_hidden_def (res_nsearch) /* - * Perform a call on res_query on the concatenation of name and domain, - * removing a trailing dot from name if domain is NULL. + * Perform a call on res_query on the concatenation of name and domain. */ static int __libc_res_nquerydomain(res_state statp, @@ -561,10 +560,6 @@ __libc_res_nquerydomain(res_state statp, name, domain?domain:"<Nil>", class, type); #endif if (domain == NULL) { - /* - * Check for trailing '.'; - * copy without '.' if present. - */ n = strlen(name); /* Decrement N prior to checking it against MAXDNAME @@ -575,11 +570,7 @@ __libc_res_nquerydomain(res_state statp, RES_SET_H_ERRNO(statp, NO_RECOVERY); return (-1); } - if (name[n] == '.') { - strncpy(nbuf, name, n); - nbuf[n] = '\0'; - } else - longname = name; + longname = name; } else { n = strlen(name); d = strlen(domain); |