attempt to regularize atoi mess.
[oweals/busybox.git] / archival / libunarchive / seek_by_jump.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 <sys/types.h>
7 #include <errno.h>
8 #include <unistd.h>
9 #include <stdlib.h>
10
11 #include "libbb.h"
12 #include "unarchive.h"
13
14 void seek_by_jump(const archive_handle_t *archive_handle, const unsigned int amount)
15 {
16         if (lseek(archive_handle->src_fd, (off_t) amount, SEEK_CUR) == (off_t) -1) {
17 #ifdef CONFIG_FEATURE_UNARCHIVE_TAPE
18                 if (errno == ESPIPE) {
19                         seek_by_read(archive_handle, amount);
20                 } else
21 #endif
22                         bb_perror_msg_and_die("Seek failure");
23         }
24 }