sc_send_buffer(): Return an error on short writes.

This allows all callers to just check for negative return values.

diff --git a/crypt_common.c b/crypt_common.c
index e02dc6af5b88ac5d5deb83f10d333324448c112a..4e9622e4ee773d65c708bbf3f0b624592ed0e27b 100644 (file)
--- a/crypt_common.c
+++ b/crypt_common.c
@@ -337,7 +337,12 @@ int sc_recv_buffer(struct stream_cipher_context *scc, char *buf, size_t size)
 
 int sc_send_buffer(struct stream_cipher_context *scc, char *buf)
 {
-       return sc_send_bin_buffer(scc, buf, strlen(buf));
+       size_t len = strlen(buf);
+       int ret = sc_send_bin_buffer(scc, buf, len);
+
+       if (ret < 0 || ret == len)
+               return ret;
+       return -E_SHORT_WRITE;
 }
 
 __printf_2_3 int sc_send_va_buffer(struct stream_cipher_context *scc,