Teach more BIOs how to handle BIO_CTRL_EOF

[oweals/openssl.git] / crypto / bio / bss_fd.c

diff --git a/crypto/bio/bss_fd.c b/crypto/bio/bss_fd.c
index 894b3ff9e7230cae3d0207fb4c270cb3fac00367..76ca0bd887f7cf0d792f2040f5a39be19e77bb7d 100644 (file)
--- a/crypto/bio/bss_fd.c
+++ b/crypto/bio/bss_fd.c
@@ -123,6 +123,8 @@ static int fd_read(BIO *b, char *out, int outl)
         if (ret <= 0) {
             if (BIO_fd_should_retry(ret))
                 BIO_set_retry_read(b);
+            else if (ret == 0)
+                b->flags |= BIO_FLAGS_IN_EOF;
         }
     }
     return ret;
@@ -186,6 +188,9 @@ static long fd_ctrl(BIO *b, int cmd, long num, void *ptr)
     case BIO_CTRL_FLUSH:
         ret = 1;
         break;
+    case BIO_CTRL_EOF:
+        ret = (b->flags & BIO_FLAGS_IN_EOF) != 0 ? 1 : 0;
+        break;
     default:
         ret = 0;
         break;