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Diffstat (limited to 'i/pc104/initrd/conf/busybox/archival/libunarchive/seek_by_read.c')
-rw-r--r--i/pc104/initrd/conf/busybox/archival/libunarchive/seek_by_read.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/archival/libunarchive/seek_by_read.c b/i/pc104/initrd/conf/busybox/archival/libunarchive/seek_by_read.c
new file mode 100644
index 0000000..e46af48
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/archival/libunarchive/seek_by_read.c
@@ -0,0 +1,18 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include <stdlib.h>
+
+#include "unarchive.h"
+#include "libbb.h"
+
+/* If we are reading through a pipe(), or from stdin then we can't lseek,
+ * we must read and discard the data to skip over it.
+ */
+void seek_by_read(const archive_handle_t *archive_handle, const unsigned int jump_size)
+{
+ if (jump_size)
+ bb_copyfd_exact_size(archive_handle->src_fd, -1, jump_size);
+}