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| author | Ulrich Drepper <drepper@redhat.com> | 2005-11-03 18:56:56 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2005-11-03 18:56:56 +0000 |
| commit | abab68592e2ef3fedc7328637d749ce0efe04682 (patch) | |
| tree | 22596f2daf656eb1a97bc10a3b76474d548bbd7b /sysdeps/posix | |
| parent | 7006f757e6d6f110b88f6a5a7759d1e118870489 (diff) | |
| download | glibc-abab68592e2ef3fedc7328637d749ce0efe04682.tar.gz glibc-abab68592e2ef3fedc7328637d749ce0efe04682.tar.xz glibc-abab68592e2ef3fedc7328637d749ce0efe04682.zip | |
[BZ #1774]
2005-11-03 Ulrich Drepper <drepper@redhat.com> [BZ #1774] * sysdeps/posix/getaddrinfo.c (gaih_inet): Don't use simple gethostbyname2 lookup if AI_V4MAPPED|AI_ALL is set. * sysdeps/posix/getaddrinfo.c (gaih_inet): Avoid alloca when possible while looking for scope delimiter. Some pretty printing.
Diffstat (limited to 'sysdeps/posix')
| -rw-r--r-- | sysdeps/posix/getaddrinfo.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c index 934aae009c..81a56a0794 100644 --- a/sysdeps/posix/getaddrinfo.c +++ b/sysdeps/posix/getaddrinfo.c @@ -568,12 +568,14 @@ gaih_inet (const char *name, const struct gaih_service *service, if (at->family == AF_UNSPEC) { - char *namebuf = strdupa (name); - char *scope_delim; + char *namebuf = (char *) name; + char *scope_delim = strchr (name, SCOPE_DELIMITER); - scope_delim = strchr (namebuf, SCOPE_DELIMITER); - if (scope_delim != NULL) - *scope_delim = '\0'; + if (__builtin_expect (scope_delim != NULL, 0)) + { + namebuf = alloca (scope_delim - name + 1); + *((char *) __mempcpy (namebuf, name, scope_delim - name)) = '\0'; + } if (inet_pton (AF_INET6, namebuf, at->addr) > 0) { @@ -629,7 +631,10 @@ gaih_inet (const char *name, const struct gaih_service *service, /* If we do not have to look for IPv4 and IPv6 together, use the simple, old functions. */ - if (req->ai_family == AF_INET || req->ai_family == AF_INET6) + if (req->ai_family == AF_INET + || (req->ai_family == AF_INET6 + && ((req->ai_flags & AI_V4MAPPED) == 0 + || (req->ai_flags & AI_ALL) == 0))) { int family = req->ai_family; size_t tmpbuflen = 512; @@ -888,8 +893,8 @@ gaih_inet (const char *name, const struct gaih_service *service, AF_INET6. Try to find a useful one for both. */ if (inet6_status == NSS_STATUS_TRYAGAIN) status = NSS_STATUS_TRYAGAIN; - else if (status == NSS_STATUS_UNAVAIL && - inet6_status != NSS_STATUS_UNAVAIL) + else if (status == NSS_STATUS_UNAVAIL + && inet6_status != NSS_STATUS_UNAVAIL) status = inet6_status; } @@ -1039,9 +1044,9 @@ gaih_inet (const char *name, const struct gaih_service *service, } } - if (at2->family == AF_INET6) + family = at2->family; + if (family == AF_INET6) { - family = AF_INET6; socklen = sizeof (struct sockaddr_in6); /* If we looked up IPv4 mapped address discard them here if @@ -1053,10 +1058,7 @@ gaih_inet (const char *name, const struct gaih_service *service, goto ignore; } else - { - family = AF_INET; - socklen = sizeof (struct sockaddr_in); - } + socklen = sizeof (struct sockaddr_in); for (st2 = st; st2 != NULL; st2 = st2->next) { |