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authorNiklas Hallqvist <niklas@cvs.openbsd.org>1997-09-16 21:20:36 +0000
committerNiklas Hallqvist <niklas@cvs.openbsd.org>1997-09-16 21:20:36 +0000
commite6687407df724f864722874c9184063ea5ad307c (patch)
treeab2b138327c331015553677255216f21536da256 /bin
parent53f105f9e1a6342e7af41c7ce263a3abf006fdc1 (diff)
Do not error out on archives without the
customary block of zeroes at the end.
Diffstat (limited to 'bin')
-rw-r--r--bin/pax/ar_subs.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/bin/pax/ar_subs.c b/bin/pax/ar_subs.c
index 8727fdb751f..c3887ea6d73 100644
--- a/bin/pax/ar_subs.c
+++ b/bin/pax/ar_subs.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ar_subs.c,v 1.12 1997/09/01 18:29:44 deraadt Exp $ */
+/* $OpenBSD: ar_subs.c,v 1.13 1997/09/16 21:20:35 niklas Exp $ */
/* $NetBSD: ar_subs.c,v 1.5 1995/03/21 09:07:06 cgd Exp $ */
/*-
@@ -42,7 +42,7 @@
#if 0
static char sccsid[] = "@(#)ar_subs.c 8.2 (Berkeley) 4/18/94";
#else
-static char rcsid[] = "$OpenBSD: ar_subs.c,v 1.12 1997/09/01 18:29:44 deraadt Exp $";
+static char rcsid[] = "$OpenBSD: ar_subs.c,v 1.13 1997/09/16 21:20:35 niklas Exp $";
#endif
#endif /* not lint */
@@ -1022,6 +1022,7 @@ next_head(arcn)
register int hsz;
register int in_resync = 0; /* set when we are in resync mode */
int cnt = 0; /* counter for trailer function */
+ int first = 1; /* on 1st read, EOF isn't premature. */
/*
* set up initial conditions, we want a whole frmt->hsz block as we
@@ -1040,6 +1041,17 @@ next_head(arcn)
break;
/*
+ * If we read 0 bytes (EOF) from an archive when we
+ * expect to find a header, we have stepped upon
+ * an archive without the customary block of zeroes
+ * end marker. It's just stupid to error out on
+ * them, so exit gracefully.
+ */
+ if (first && ret == 0)
+ return(-1);
+ first = 0;
+
+ /*
* some kind of archive read problem, try to resync the
* storage device, better give the user the bad news.
*/