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Diffstat (limited to 'nss/nss_db/db-XXX.c')
-rw-r--r--nss/nss_db/db-XXX.c71
1 files changed, 62 insertions, 9 deletions
diff --git a/nss/nss_db/db-XXX.c b/nss/nss_db/db-XXX.c
index 4d20cae797..1340b77de0 100644
--- a/nss/nss_db/db-XXX.c
+++ b/nss/nss_db/db-XXX.c
@@ -149,6 +149,7 @@ static enum nss_status
lookup (const DBT *key, struct STRUCTURE *result,
void *buffer, size_t buflen, int *errnop H_ERRNO_PROTO)
{
+ char *p;
enum nss_status status;
int err;
DBT value;
@@ -156,15 +157,59 @@ lookup (const DBT *key, struct STRUCTURE *result,
/* Open the database. */
status = internal_setent (keep_db);
if (status != NSS_STATUS_SUCCESS)
- return status;
+ {
+ *errnop = errno;
+ H_ERRNO_SET (NETDB_INTERNAL);
+ return status;
+ }
/* Succeed iff it matches a value that parses correctly. */
- err = ((*db->get) (db, key, &value, 0) == 0 &&
- parse_line (value.data, result, buffer, buflen, errnop));
- if (err == 0)
- status = NSS_STATUS_SUCCESS;
+ err = (*db->get) (db, key, &value, 0);
+ if (err < 0)
+ {
+ *errnop = errno;
+ H_ERRNO_SET (NETDB_INTERNAL);
+ status = NSS_STATUS_UNAVAIL;
+ }
+ else if (err != 0)
+ {
+ H_ERRNO_SET (HOST_NOT_FOUND);
+ status = NSS_STATUS_NOTFOUND;
+ }
else
- status = err < 0 ? NSS_STATUS_TRYAGAIN : NSS_STATUS_NOTFOUND;
+ {
+ /* Skip leading blanks. */
+ p = (char *) value.data;
+ while (isspace (*p))
+ ++p;
+
+ err = parse_line (p, result, buffer, buflen, errnop);
+
+ if (err == 0)
+ {
+ /* If the key begins with '0' we are trying to get the next
+ entry. We want to ignore unparsable lines in this case. */
+ if (((char *) key->data)[0] == '0')
+ {
+ /* Super magical return value. We need to tell our caller
+ that it should continue looping. This value cannot
+ happen in other cases. */
+ status = NSS_STATUS_RETURN;
+ }
+ else
+ {
+ H_ERRNO_SET (HOST_NOT_FOUND);
+ status = NSS_STATUS_NOTFOUND;
+ }
+ }
+ else if (err < 0)
+ {
+ H_ERRNO_SET (NETDB_INTERNAL);
+ status = NSS_STATUS_TRYAGAIN;
+ }
+ else
+ status = NSS_STATUS_SUCCESS;
+ }
if (! keep_db)
internal_endent ();
@@ -196,7 +241,7 @@ _nss_db_get##name##_r (proto, \
{ \
DBT key; \
enum nss_status status; \
- const size_t size = (keysize); \
+ const size_t size = (keysize) + 1; \
key.data = __alloca (size); \
key.size = KEYPRINTF keypattern; \
__libc_lock_lock (lock); \
@@ -221,8 +266,16 @@ CONCAT(_nss_db_get,ENTNAME_r) (struct STRUCTURE *result, char *buffer,
DBT key;
__libc_lock_lock (lock);
- key.size = 1 + snprintf (key.data = buf, sizeof buf, "0%u", entidx++);
- status = lookup (&key, result, buffer, buflen, errnop H_ERRNO_ARG);
+
+ /* Loop until we find a valid entry or hit EOF. See above for the
+ special meaning of the status value. */
+ do
+ {
+ key.size = snprintf (key.data = buf, sizeof buf, "0%u", entidx++);
+ status = lookup (&key, result, buffer, buflen, errnop H_ERRNO_ARG);
+ }
+ while (status == NSS_STATUS_RETURN);
+
__libc_lock_unlock (lock);
return status;