u-tools/apps/busybox/archival/libunarchive/seek_by_read.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
   4  */
   5
   6 #include "libbb.h"
   7 #include "unarchive.h"
   8
   9 /*  If we are reading through a pipe, or from stdin then we can't lseek,
  10  *  we must read and discard the data to skip over it.
  11  */
  12 void FAST_FUNC seek_by_read(const archive_handle_t *archive_handle, unsigned jump_size)
  13 {
  14         if (jump_size)
  15                 bb_copyfd_exact_size(archive_handle->src_fd, -1, jump_size);
  16 }