X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=tests%2Fextrac11.at;h=5a3f419b4cee4d86ecd2938ac92db9dcb2da1876;hb=e7c99a4dd16685012e42519f1b4fb2b37b19dec5;hp=9456695a49387dc3a60713e4748078d59b8b9424;hpb=8da503cad6e883b30c05749149084d24319063b4;p=chaz%2Ftar

diff --git a/tests/extrac11.at b/tests/extrac11.at
index 9456695..5a3f419 100644
--- a/tests/extrac11.at
+++ b/tests/extrac11.at
@@ -1,14 +1,16 @@
 # Process this file with autom4te to create testsuite. -*- Autotest -*-
 
 # Test suite for GNU tar.
-# Copyright (C) 2010 Free Software Foundation, Inc.
+# Copyright 2010, 2013-2014 Free Software Foundation, Inc.
 
-# This program is free software; you can redistribute it and/or modify
+# This file is part of GNU tar.
+
+# GNU tar is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3, or (at your option)
-# any later version.
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
 
-# This program is distributed in the hope that it will be useful,
+# GNU tar is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
@@ -24,6 +26,7 @@ AT_SETUP([scarce file descriptors])
 AT_KEYWORDS([extract extrac11])
 
 AT_TAR_CHECK([
+exec </dev/null
 dirs='a
       a/b
       a/b/c
@@ -45,31 +48,37 @@ for dir in $dirs; do
   done
 done
 
-# Check that "ulimit" itself works.
-((ulimit -n 100 &&
-  tar -cf archive1.tar a 3<&- 4<&- 5<&- 6<&- 7<&- 8<&- 9<&- &&
-  tar -xf archive1.tar -C dest1 a 3<&- 4<&- 5<&- 6<&- 7<&- 8<&- 9<&-
- ) &&
- diff -r a dest1/a
+# Check that "ulimit" itself works.  Close file descriptors before
+# invoking ulimit, to work around a bug (or a "feature") in some shells,
+# where they squirrel away dups of file descriptors into FD 10 and up
+# before closing the originals.
+( (exec 3<&- 4<&- 5<&- 6<&- 7<&- 8<&- 9<&- &&
+   ulimit -n 100 &&
+   tar -cf archive1.tar a &&
+   tar -xf archive1.tar -C dest1 a
+  ) &&
+  diff -r a dest1/a
 ) >/dev/null 2>&1 ||
    AT_SKIP_TEST
 
 # Another test that "ulimit" itself works:
 # tar should fail when completely starved of file descriptors.
-((ulimit -n 4 &&
-  tar -cf archive2.tar a 3<&- 4<&- 5<&- 6<&- 7<&- 8<&- 9<&- &&
-  tar -xf archive2.tar -C dest2 a 3<&- 4<&- 5<&- 6<&- 7<&- 8<&- 9<&-
- ) &&
- diff -r a dest2/a
+( (exec 3<&- 4<&- 5<&- 6<&- 7<&- 8<&- 9<&- &&
+   ulimit -n 4 &&
+   tar -cf archive2.tar a &&
+   tar -xf archive2.tar -C dest2 a
+  ) &&
+  diff -r a dest2/a
 ) >/dev/null 2>&1 &&
    AT_SKIP_TEST
 
 # Tar should work when there are few, but enough, file descriptors.
-((ulimit -n 10 &&
-  tar -cf archive3.tar a 3<&- 4<&- 5<&- 6<&- 7<&- 8<&- 9<&- &&
-  tar -xf archive3.tar -C dest3 a 3<&- 4<&- 5<&- 6<&- 7<&- 8<&- 9<&-
- ) &&
- diff -r a dest3/a >/dev/null 2>&1
+( (exec 3<&- 4<&- 5<&- 6<&- 7<&- 8<&- 9<&- &&
+   ulimit -n 10 &&
+   tar -cf archive3.tar a &&
+   tar -xf archive3.tar -C dest3 a
+  ) &&
+  diff -r a dest3/a >/dev/null 2>&1
 ) || { diff -r a dest3/a; exit 1; }
 ],
 [0],[],[],[],[],[gnu])