Imported Upstream version 7.59.0

[platform/upstream/curl.git] / docs / libcurl / opts / CURLOPT_IOCTLFUNCTION.3

diff --git a/docs/libcurl/opts/CURLOPT_IOCTLFUNCTION.3 b/docs/libcurl/opts/CURLOPT_IOCTLFUNCTION.3
index f2dd42e..eba85e1 100644 (file)
--- a/docs/libcurl/opts/CURLOPT_IOCTLFUNCTION.3
+++ b/docs/libcurl/opts/CURLOPT_IOCTLFUNCTION.3
@@ -5,7 +5,7 @@
 .\" *                            | (__| |_| |  _ <| |___
 .\" *                             \___|\___/|_| \_\_____|
 .\" *
-.\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
 .\" *
 .\" * This software is licensed as described in the file COPYING, which
 .\" * you should have received as part of this distribution. The terms
@@ -20,7 +20,8 @@
 .\" *
 .\" **************************************************************************
 .\"
-.TH CURLOPT_IOCTLFUNCTION 3 "16 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
+.TH CURLOPT_IOCTLFUNCTION 3 "May 31, 2017" "libcurl 7.59.0" "curl_easy_setopt options"
+
 .SH NAME
 CURLOPT_IOCTLFUNCTION \- callback for I/O operations
 .SH SYNOPSIS
@@ -67,7 +68,23 @@ By default, this parameter is set to NULL. Not used.
 .SH PROTOCOLS
 Used with HTTP
 .SH EXAMPLE
-TODO
+.nf
+static curlioerr ioctl_callback(CURL *handle, int cmd, void *clientp)
+{
+  struct data *io = (struct data *)clientp;
+  if(cmd == CURLIOCMD_RESTARTREAD) {
+    lseek(fd, 0, SEEK_SET);
+    current_offset = 0;
+    return CURLIOE_OK;
+  }
+  return CURLIOE_UNKNOWNCMD;
+}
+{
+  struct data ioctl_data;
+  curl_easy_setopt(curl, CURLOPT_IOCTLFUNCTION, ioctl_callback);
+  curl_easy_setopt(curl, CURLOPT_IOCTLDATA, &ioctl_data);
+}
+.fi
 .SH AVAILABILITY
 Added in 7.12.3
 .SH RETURN VALUE