net: dns_resolver: convert time_t to time64_t

Changes the definition of the pointer _expiry from time_t to
time64_t. This is to handle the Y2038 problem where time_t
will overflow in the year 2038. The change is safe because
the kernel subsystems that call dns_query pass NULL.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Aya Mahfouz <mahfouz.saif.elyazal@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/linux/dns_resolver.h b/include/linux/dns_resolver.h
index cc92268..6ac3cad 100644 (file)
--- a/include/linux/dns_resolver.h
+++ b/include/linux/dns_resolver.h
@@ -27,7 +27,7 @@
 #ifdef __KERNEL__
 
 extern int dns_query(const char *type, const char *name, size_t namelen,
-                    const char *options, char **_result, time_t *_expiry);
+                    const char *options, char **_result, time64_t *_expiry);
 
 #endif /* KERNEL */
 

diff --git a/net/dns_resolver/dns_query.c b/net/dns_resolver/dns_query.c
index 4677b6f..ecc28cf 100644 (file)
--- a/net/dns_resolver/dns_query.c
+++ b/net/dns_resolver/dns_query.c
@@ -67,7 +67,7 @@
  * Returns the size of the result on success, -ve error code otherwise.
  */
 int dns_query(const char *type, const char *name, size_t namelen,
-             const char *options, char **_result, time_t *_expiry)
+             const char *options, char **_result, time64_t *_expiry)
 {
        struct key *rkey;
        const struct user_key_payload *upayload;