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path: root/i/pc104/initrd/conf/busybox/archival/libunarchive/seek_by_jump.c
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Diffstat (limited to 'i/pc104/initrd/conf/busybox/archival/libunarchive/seek_by_jump.c')
-rw-r--r--i/pc104/initrd/conf/busybox/archival/libunarchive/seek_by_jump.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/archival/libunarchive/seek_by_jump.c b/i/pc104/initrd/conf/busybox/archival/libunarchive/seek_by_jump.c
new file mode 100644
index 0000000..d605f61
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/archival/libunarchive/seek_by_jump.c
@@ -0,0 +1,24 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include <sys/types.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include "libbb.h"
+#include "unarchive.h"
+
+void seek_by_jump(const archive_handle_t *archive_handle, const unsigned int amount)
+{
+ if (lseek(archive_handle->src_fd, (off_t) amount, SEEK_CUR) == (off_t) -1) {
+#ifdef CONFIG_FEATURE_UNARCHIVE_TAPE
+ if (errno == ESPIPE) {
+ seek_by_read(archive_handle, amount);
+ } else
+#endif
+ bb_perror_msg_and_die("seek failure");
+ }
+}