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(cache_addhst): Sync also negative results to disk.

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This commit is contained in:
Ulrich Drepper 2004-09-12 10:04:03 +00:00
parent 9d78d12272
commit 8c89236fd3
1 changed files with 15 additions and 6 deletions
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21
nscd/hstcache.c
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@ -136,6 +136,16 @@ cache_addhst (struct database_dyn *db, int fd, request_header *req,
/* Copy the key data. */ /* Copy the key data. */
memcpy (dataset->strdata, key, req->key_len); memcpy (dataset->strdata, key, req->key_len);
/* If necessary, we also propagate the data to disk. */
if (db->persistent)
{
// XXX async OK?
uintptr_t pval = (uintptr_t) dataset & ~pagesize_m1;
msync ((void *) pval,
((uintptr_t) dataset & pagesize_m1)
+ sizeof (struct dataset) + req->key_len, MS_ASYNC);
}
/* Now get the lock to safely insert the records. */ /* Now get the lock to safely insert the records. */
pthread_rwlock_rdlock (&db->lock); pthread_rwlock_rdlock (&db->lock);
@ -282,7 +292,7 @@ cache_addhst (struct database_dyn *db, int fd, request_header *req,
&& memcmp (&dataset->resp, dh->data, && memcmp (&dataset->resp, dh->data,
dh->allocsize - offsetof (struct dataset, resp)) == 0) dh->allocsize - offsetof (struct dataset, resp)) == 0)
{ {
/* The sata has not changed. We will just bump the /* The data has not changed. We will just bump the
timeout value. Note that the new record has been timeout value. Note that the new record has been
allocated on the stack and need not be freed. */ allocated on the stack and need not be freed. */
dh->timeout = dataset->head.timeout; dh->timeout = dataset->head.timeout;
@ -386,15 +396,14 @@ lookup (int type, void *key, struct hostent *resultbufp, char *buffer,
if (type == GETHOSTBYNAME) if (type == GETHOSTBYNAME)
return __gethostbyname2_r (key, AF_INET, resultbufp, buffer, buflen, hst, return __gethostbyname2_r (key, AF_INET, resultbufp, buffer, buflen, hst,
&h_errno); &h_errno);
else if (type == GETHOSTBYNAMEv6) if (type == GETHOSTBYNAMEv6)
return __gethostbyname2_r (key, AF_INET6, resultbufp, buffer, buflen, hst, return __gethostbyname2_r (key, AF_INET6, resultbufp, buffer, buflen, hst,
&h_errno); &h_errno);
else if (type == GETHOSTBYADDR) if (type == GETHOSTBYADDR)
return __gethostbyaddr_r (key, NS_INADDRSZ, AF_INET, resultbufp, buffer, return __gethostbyaddr_r (key, NS_INADDRSZ, AF_INET, resultbufp, buffer,
buflen, hst, &h_errno); buflen, hst, &h_errno);
else return __gethostbyaddr_r (key, NS_IN6ADDRSZ, AF_INET6, resultbufp, buffer,
return __gethostbyaddr_r (key, NS_IN6ADDRSZ, AF_INET6, resultbufp, buffer, buflen, hst, &h_errno);
buflen, hst, &h_errno);
} }