1 files changed, 12 insertions, 0 deletions

diff --git a/lib/libarchive/archive_read.3 b/lib/libarchive/archive_read.3
index 28131cd4cb07..421b3f671673 100644
--- a/lib/libarchive/archive_read.3
+++ b/lib/libarchive/archive_read.3
@@ -47,6 +47,7 @@
 .Nm archive_read_data_into_buffer ,
 .Nm archive_read_data_into_file ,
 .Nm archive_read_extract ,
+.Nm archive_read_extract_set_progress_callback ,
 .Nm archive_read_finish
 .Nd functions for reading tar archives
 .Sh SYNOPSIS
@@ -90,6 +91,8 @@
 .Ft int
 .Fn archive_read_extract "struct archive *" "int flags"
 .Ft void
+.Fn archive_read_extract_set_progress_callback "struct archive *" "void (*func)(void *)" "void *user_data"
+.Ft void
 .Fn archive_read_finish "struct archive *"
 .Sh DESCRIPTION
 These functions provide a complete API for reading streaming archives.
@@ -202,6 +205,15 @@ By default, existing files are truncated and rewritten, but
 the file is not recreated.
 In particular, the default behavior does not break existing hard links.
 .El
+.It Fn archive_read_extract_set_progress_callback
+Sets a pointer to a user-defined callback that can be used
+for updating progress displays during extraction.
+The progress function will be invoked during the extraction of large
+regular files.
+The progress function will be invoked with the pointer provided to this call.
+Generally, the data pointed to should include a reference to the archive
+object and the archive_entry object so that various statistics
+can be retrieved for the progress display.
 .It Fn archive_read_finish
 Complete the archive, invoke the close callback, and release
 all resources.