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| author | Ulrich Drepper <drepper@redhat.com> | 2004-08-15 22:39:07 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2004-08-15 22:39:07 +0000 |
| commit | 2d26a7173c076ff8f40c9bbdbff80166ff0c781d (patch) | |
| tree | 2e4085109c65479fe0ecbc587b0dbdbbd03bf9fd /sysdeps/posix | |
| parent | 28977c2c1acb789660ad47e0d88e42486059c916 (diff) | |
| download | glibc-2d26a7173c076ff8f40c9bbdbff80166ff0c781d.tar.gz glibc-2d26a7173c076ff8f40c9bbdbff80166ff0c781d.tar.xz glibc-2d26a7173c076ff8f40c9bbdbff80166ff0c781d.zip | |
Update.
* sysdeps/posix/getaddrinfo.c (gaih_inet): Optimize generation of v4-mapped addresses a bit. (gethosts): Move alloca out of macro, so that it is done only once.
Diffstat (limited to 'sysdeps/posix')
| -rw-r--r-- | sysdeps/posix/getaddrinfo.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c index 23b74296c1..9de2860323 100644 --- a/sysdeps/posix/getaddrinfo.c +++ b/sysdeps/posix/getaddrinfo.c @@ -282,18 +282,18 @@ gaih_inet_serv (const char *servicename, const struct gaih_typeproto *tp, #define gethosts(_family, _type) \ { \ - int i, herrno; \ - size_t tmpbuflen; \ + int i; \ + int herrno; \ struct hostent th; \ - char *tmpbuf = NULL; \ - tmpbuflen = 512; \ no_data = 0; \ - do { \ - tmpbuf = extend_alloca (tmpbuf, tmpbuflen, 2 * tmpbuflen); \ + while (1) { \ rc = 0; \ status = DL_CALL_FCT (fct, (name, _family, &th, tmpbuf, \ tmpbuflen, &rc, &herrno)); \ - } while (rc == ERANGE && herrno == NETDB_INTERNAL); \ + if (rc != ERANGE || herrno != NETDB_INTERNAL) \ + break; \ + tmpbuf = extend_alloca (tmpbuf, tmpbuflen, 2 * tmpbuflen); \ + } \ if (status == NSS_STATUS_SUCCESS && rc == 0) \ h = &th; \ else \ @@ -585,6 +585,8 @@ gaih_inet (const char *name, const struct gaih_service *service, int no_more; nss_gethostbyname2_r fct; int old_res_options; + size_t tmpbuflen = 512; + char *tmpbuf = alloca (tmpbuflen); if (__nss_hosts_database != NULL) { @@ -622,7 +624,10 @@ gaih_inet (const char *name, const struct gaih_service *service, if (req->ai_family == AF_INET || req->ai_family == AF_UNSPEC || (req->ai_family == AF_INET6 - && (req->ai_flags & AI_V4MAPPED))) + && (req->ai_flags & AI_V4MAPPED) + /* Avoid generating the mapped addresses if we + know we are not going to need them. */ + && ((req->ai_flags & AI_ALL) || !got_ipv6))) { gethosts (AF_INET, struct in_addr); |