busybox/archival/libunarchive/seek_by_jump.c

25 lines
570 B
C
Raw Normal View History

/* vi: set sw=4 ts=4: */
2001-10-25 19:48:08 +05:30
/*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
2001-10-25 19:48:08 +05:30
*/
2002-09-25 08:17:48 +05:30
#include <sys/types.h>
2001-10-25 19:48:08 +05:30
#include <errno.h>
#include <unistd.h>
2002-09-25 08:17:48 +05:30
#include <stdlib.h>
2002-09-25 08:17:48 +05:30
#include "libbb.h"
#include "unarchive.h"
2001-10-25 19:48:08 +05:30
void seek_by_jump(const archive_handle_t *archive_handle, const unsigned int amount)
2001-10-25 19:48:08 +05:30
{
if (lseek(archive_handle->src_fd, (off_t) amount, SEEK_CUR) == (off_t) -1) {
2002-11-08 13:37:38 +05:30
#ifdef CONFIG_FEATURE_UNARCHIVE_TAPE
if (errno == ESPIPE) {
seek_by_char(archive_handle, amount);
} else
#endif
2003-03-19 14:43:01 +05:30
bb_perror_msg_and_die("Seek failure");
2001-10-25 19:48:08 +05:30
}
}