Reduce block size to 512 to prevent short read's when reading from a pipe

1 files changed, 5 insertions, 10 deletions

diff --git a/archival/libunarchive/archive_copy_file.c b/archival/libunarchive/archive_copy_file.c
index 22355ccd5..47d1a5216 100644
--- a/archival/libunarchive/archive_copy_file.c
+++ b/archival/libunarchive/archive_copy_file.c
@@ -19,17 +19,15 @@
 #include "libbb.h"
 #include "unarchive.h"
 
-/* Copy CHUNKSIZE bytes (or untill EOF if chunksize == -1)
- * from SRC_FILE to DST_FILE. */
 extern void archive_copy_file(const archive_handle_t *archive_handle, const int dst_fd)
 {
-        size_t size;
-        char buffer[BUFSIZ];
+        char buffer[512];
         off_t chunksize = archive_handle->file_header->size;
 
         while (chunksize != 0) {
-                if (chunksize > BUFSIZ) {
-                        size = BUFSIZ;
+                size_t size;
+                if (chunksize > 512) {
+                        size = 512;
                 } else {
                         size = chunksize;
                 }
@@ -38,10 +36,7 @@ extern void archive_copy_file(const archive_handle_t *archive_handle, const int
                 if (write(dst_fd, buffer, size) != size) {
                         error_msg_and_die ("Short write");
                 }
-
-                if (chunksize != -1) {
-                        chunksize -= size;
-                }
+                chunksize -= size;
         }
 
         return;