From: Jim Meyering <jim@meyering.net>
Date: Tue, 22 Jan 2002 10:44:13 +0000 (+0000)
Subject: (skip): Use fseeko rather than lseek.
X-Git-Tag: TEXTUTILS-2_0_20~21
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=437d89a15183a1b2ef66724360bd09a7ef7d9d71;p=platform%2Fupstream%2Fcoreutils.git

(skip): Use fseeko rather than lseek.
(Also, check for overflow when converting uintmax_t to off_t.)
---

diff --git a/src/od.c b/src/od.c
index ad73bb2..a08a7a5 100644
--- a/src/od.c
+++ b/src/od.c
@@ -1081,7 +1081,10 @@ skip (uintmax_t n_skip)
 		n_skip -= file_stats.st_size;
 	      else
 		{
-		  if (lseek (fileno (in_stream), n_skip, SEEK_CUR) < 0)
+		  off_t offset = n_skip;
+		  if (offset == n_skip && 0 <= offset
+		      ? fseeko (in_stream, offset, SEEK_CUR) != 0
+		      : (errno = EOVERFLOW, 1))
 		    {
 		      error (0, errno, "%s", input_filename);
 		      err = 1;