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authorIsaac Dunham <ibid.ag@gmail.com>2014-06-01 13:50:39 -0500
committerIsaac Dunham <ibid.ag@gmail.com>2014-06-01 13:50:39 -0500
commit670626ab009f1d369be94def71f48be2e88f0106 (patch)
treecdf9e2e09148f68005e7ccc532e3f0191686fb86 /scripts/test
parentc20fb908bb733a3d7c1dda77a3c1d22d5c3fafec (diff)
downloadtoybox-670626ab009f1d369be94def71f48be2e88f0106.tar.gz
cpio: archive more files
While writing tests for cpio, I found that cpio tries to open empty files if they're regular files, and fails to archive them if unreadable. This can be easily avoided, and is not the usual behavior.
Diffstat (limited to 'scripts/test')
-rwxr-xr-xscripts/test/cpio.test39
1 files changed, 39 insertions, 0 deletions
diff --git a/scripts/test/cpio.test b/scripts/test/cpio.test
new file mode 100755
index 00000000..d0528e52
--- /dev/null
+++ b/scripts/test/cpio.test
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+[ -f testing.sh ] && . testing.sh
+
+# We need to test name and file padding.
+# This means all possible values of strlen(name)+1 % 4,
+# plus file sizes of at least 0-4.
+
+touch a bb ccc dddd
+testing "cpio name padding" "cpio -o -H newc|cpio -it" "a\nbb\nccc\ndddd\n" "" "a\nbb\nccc\ndddd\n"
+rm a bb ccc dddd
+
+touch a
+printf '1' >b
+printf '22' >c
+printf '333' >d
+testing "cpio file padding" "cpio -o -H newc|cpio -it" "a\nb\nc\nd\n" "" "a\nb\nc\nd\n"
+rm a b c d
+
+touch a
+printf '1' >bb
+printf '22' >ccc
+printf '333' >dddd
+# With the proper padding, header length, and file length,
+# the relevant bit should be here:
+# 110*5 + 4*3 + 2 + 6*3 = 550 + 12 + 20 = 582
+# files are padded to n*4, names are padded to 2 + n*4 due to the header length
+testing "cpio archive length" "cpio -o -H newc|dd ibs=2 skip=291 count=5" "TRAILER!!!" "" "a\nbb\nccc\ndddd\n"
+testing "cpio archive magic" "cpio -o -H newc|dd ibs=2 count=3" "070701" "" "a\n"
+# check name length (8 bytes before the empty "crc")
+testing "cpio name length" "cpio -o -H newc|dd ibs=2 skip=47 count=4" "00000002" "" "a\n"
+rm a bb ccc dddd
+
+# archive dangling symlinks and empty files even if we cannot open them
+touch a; chmod a-rwx a; ln -s a/cant b
+testing "cpio archives unreadable empty files" "cpio -o -H newc|cpio -it" "a\nb\n" "" "a\nb\n"
+chmod u+rw a; rm -f a b
+
+