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authorBaolin Wang <baolin.wang@linaro.org>2017-08-29 12:15:40 +0300
committerDavid Howells <dhowells@redhat.com>2017-08-29 12:16:00 +0300
commit10674a03c633379fadb5b314abde975fba270058 (patch)
tree3f690f5c6e27d682bb590d52bc09ce41920b9100 /include/keys
parentc8488a8ad7c284b1159973baf536ca58fba0ad36 (diff)
downloadlinux-10674a03c633379fadb5b314abde975fba270058.tar.xz
net: rxrpc: Replace time_t type with time64_t type
Since the 'expiry' variable of 'struct key_preparsed_payload' has been changed to 'time64_t' type, which is year 2038 safe on 32bits system. In net/rxrpc subsystem, we need convert 'u32' type to 'time64_t' type when copying ticket expires time to 'prep->expiry', then this patch introduces two helper functions to help convert 'u32' to 'time64_t' type. This patch also uses ktime_get_real_seconds() to get current time instead of get_seconds() which is not year 2038 safe on 32bits system. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'include/keys')
-rw-r--r--include/keys/rxrpc-type.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/include/keys/rxrpc-type.h b/include/keys/rxrpc-type.h
index 5de0673f333b..8cf829dbf20e 100644
--- a/include/keys/rxrpc-type.h
+++ b/include/keys/rxrpc-type.h
@@ -127,4 +127,27 @@ struct rxrpc_key_data_v1 {
#define AFSTOKEN_K5_ADDRESSES_MAX 16 /* max K5 addresses */
#define AFSTOKEN_K5_AUTHDATA_MAX 16 /* max K5 pieces of auth data */
+/*
+ * Truncate a time64_t to the range from 1970 to 2106 as in the network
+ * protocol.
+ */
+static inline u32 rxrpc_time64_to_u32(time64_t time)
+{
+ if (time < 0)
+ return 0;
+
+ if (time > UINT_MAX)
+ return UINT_MAX;
+
+ return (u32)time;
+}
+
+/*
+ * Extend u32 back to time64_t using the same 1970-2106 range.
+ */
+static inline time64_t rxrpc_u32_to_time64(u32 time)
+{
+ return (time64_t)time;
+}
+
#endif /* _KEYS_RXRPC_TYPE_H */