31 lines
1.1 KiB
Diff
31 lines
1.1 KiB
Diff
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From ac6b8d8224de140f5a6f2ca66e6ce279604a37e6 Mon Sep 17 00:00:00 2001
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From: Paul Eggert <eggert@cs.ucla.edu>
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Date: Sat, 6 Apr 2024 15:15:04 -0700
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Subject: [PATCH] =?UTF-8?q?dd:=20don=E2=80=99t=20trust=20st=5Fsize=20on=20?=
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=?UTF-8?q?/proc/files?=
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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* src/dd.c (skip): Don’t trust st_size == 0
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---
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src/dd.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/dd.c b/src/dd.c
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index b50b841..a582111 100644
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--- a/src/dd.c
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+++ b/src/dd.c
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@@ -1813,7 +1813,7 @@ skip (int fdesc, char const *file, intmax_t records, idx_t blocksize,
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struct stat st;
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if (ifstat (STDIN_FILENO, &st) != 0)
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error (EXIT_FAILURE, errno, _("cannot fstat %s"), quoteaf (file));
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- if (usable_st_size (&st) && 0 <= input_offset
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+ if (usable_st_size (&st) && 0 < st.st_size && 0 <= input_offset
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&& st.st_size - input_offset < offset)
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{
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/* When skipping past EOF, return the number of _full_ blocks
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--
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2.27.0
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