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2000-02-17  Ulrich Drepper  <drepper@redhat.com>

	* nscd/hstcache.c (cache_addhst): Don't cache name->record entries
	if more than one IP address is available.
This commit is contained in:
Ulrich Drepper 2000-02-18 07:30:25 +00:00
parent 90ab302088
commit 60c4f8eb1e
2 changed files with 40 additions and 24 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2000-02-17 Ulrich Drepper <drepper@redhat.com>
* nscd/hstcache.c (cache_addhst): Don't cache name->record entries
if more than one IP address is available.
2000-02-17 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/sparc/bits/termios.h: Sync with kernel.

59
nscd/hstcache.c
View File

@ -211,18 +211,24 @@ cache_addhst (struct database *db, int fd, request_header *req, void *key,
/* Now get the lock to safely insert the records. */
pthread_rwlock_rdlock (&db->lock);
/* First add all the aliases. */
for (cnt = 0; cnt < h_aliases_cnt; ++cnt)
{
if (addr_list_type == GETHOSTBYADDR)
cache_add (GETHOSTBYNAME, aliases, h_aliases_len[cnt], data, total,
data, 0, t, db, owner);
/* First add all the aliases. If the record contains more than
one IP address (used for load balancing etc) don't cache the
entry. This is something the current cache handling cannot
handle and it is more than questionable whether it is
worthwhile complicating the cache handling just for handling
such a special case. */
if (hst->h_addr_list[1] == NULL)
for (cnt = 0; cnt < h_aliases_cnt; ++cnt)
{
if (addr_list_type == GETHOSTBYADDR)
cache_add (GETHOSTBYNAME, aliases, h_aliases_len[cnt], data,
total, data, 0, t, db, owner);
cache_add (GETHOSTBYNAMEv6, aliases, h_aliases_len[cnt], data, total,
data, 0, t, db, owner);
cache_add (GETHOSTBYNAMEv6, aliases, h_aliases_len[cnt], data,
total, data, 0, t, db, owner);
aliases += h_aliases_len[cnt];
}
aliases += h_aliases_len[cnt];
}
/* Next the normal addresses. */
for (cnt = 0; cnt < h_addr_list_cnt; ++cnt)
@ -241,22 +247,27 @@ cache_addhst (struct database *db, int fd, request_header *req, void *key,
addresses += IN6ADDRSZ;
}
/* If necessary add the key for this request. */
if (req->type == GETHOSTBYNAME || req->type == GETHOSTBYNAMEv6)
/* Avoid adding names if more than one address is available. See
above for more info. */
if (hst->h_addr_list[1] == NULL)
{
if (addr_list_type == GETHOSTBYADDR)
cache_add (GETHOSTBYNAME, key_copy, req->key_len, data, total,
data, 0, t, db, owner);
cache_add (GETHOSTBYNAMEv6, key_copy, req->key_len, data,
total, data, 0, t, db, owner);
}
/* If necessary add the key for this request. */
if (req->type == GETHOSTBYNAME || req->type == GETHOSTBYNAMEv6)
{
if (addr_list_type == GETHOSTBYADDR)
cache_add (GETHOSTBYNAME, key_copy, req->key_len, data, total,
data, 0, t, db, owner);
cache_add (GETHOSTBYNAMEv6, key_copy, req->key_len, data,
total, data, 0, t, db, owner);
}
/* And finally the name. We mark this as the last entry. */
if (addr_list_type == GETHOSTBYADDR)
cache_add (GETHOSTBYNAME, data->strdata, h_name_len, data, total, data,
0, t, db, owner);
cache_add (GETHOSTBYNAMEv6, data->strdata, h_name_len, data,
total, data, 1, t, db, owner);
/* And finally the name. We mark this as the last entry. */
if (addr_list_type == GETHOSTBYADDR)
cache_add (GETHOSTBYNAME, data->strdata, h_name_len, data, total,
data, 0, t, db, owner);
cache_add (GETHOSTBYNAMEv6, data->strdata, h_name_len, data,
total, data, 1, t, db, owner);
}
pthread_rwlock_unlock (&db->lock);
}