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- #!/bin/bash
- [ -f testing.sh ] && . testing.sh
- #testing "name" "command" "result" "infile" "stdin"
- if [ "$(id -u)" -ne 0 ]; then
- echo "$SHOWSKIP: chattr (not root)"
- return 2>/dev/null
- exit
- fi
- function clean()
- {
- # We don't know whether the fs will have extents (e, typically true on the
- # desktop) or be encrypted (E, typically true on Android), or have data
- # inlined in the inode (N), or use indexed directories, so strip those out.
- # We also don't want to rely on chattr(1) to set a known version number or
- # project number, so blank out any numbers.
- sed -E -e 's/, (Encrypted|Extents|Indexed_directory|Inline_Data)//g;' \
- -e 's/[EeIN]-/--/g; s/[0-9]+/_/g'
- }
- mkdir testattr
- IN="cd testattr"
- OUT="cd .."
- _t="abcdefghijklmnopqrstuvwxyz"
- _empty="--------------------"
- # Check +i (immutable) works by trying to write to and remove the file.
- _i="----i---------------"
- testing "immutable" "$IN && echo "$_t" > testFile &&
- chattr +i testFile && lsattr testFile | clean &&
- date > testFile 2>/dev/null; rm testFile; chattr -i testFile;
- cat testFile; rm -rf testFile; $OUT " "$_i testFile\n$_t\n" "" ""
- # Check +a (append-only) works by failing to write and succeeding in appending.
- _a="-----a--------------"
- testing "append-only" "$IN && echo "$_t" > testFile &&
- chattr +a testFile &&
- echo $_t >> testFile &&
- date > testFile || lsattr testFile | clean &&
- chattr -a testFile; cat testFile; rm -rf testFile; $OUT" \
- "$_a testFile\n$_t\n$_t\n" "" ""
- # For the rest, just toggle the bits back and forth (where supported).
- # Note that some file system/kernel combinations do return success but
- # silently ignore your request: +T on 4.19 f2fs, or +F on 5.2 ext4,
- # for example, so we're deliberately a bit selective here.
- # f2fs in 5.6+ kernels supports compression, but you can only enable
- # compression on a file while it's still empty, so we skip +c too.
- for attr in "A" "d" "e" "j" "P" "S" "s" "t" "u"; do
- echo "$_t" > testFile && chattr +$attr testFile 2>/dev/null || ((++SKIP))
- # Check that $attr is in the lsattr output, then that - turns it back off.
- testing "toggle $attr" "lsattr testFile | awk '{print \$1}' > attrs;
- grep -q $attr attrs || cat attrs; cat testFile && chattr -$attr testFile &&
- lsattr testFile | clean; rm -rf testFile" "$_t\n$_empty testFile\n" "" ""
- done
- _aA="-----a-A------------"
- testing "multiple bits" "$IN && touch testFile &&
- chattr +Aa testFile && lsattr testFile | clean &&
- chattr -Aa testFile && lsattr testFile | clean;
- rm -rf testFile; $OUT" "$_aA testFile\n$_empty testFile\n" "" ""
- testing "multiple files" "$IN && touch fileA && touch fileB &&
- chattr +Aa fileA fileB && lsattr fileA fileB | clean &&
- chattr -Aa fileA fileB && lsattr fileA fileB | clean;
- rm -rf testFile*; $OUT" \
- "$_aA fileA\n$_aA fileB\n$_empty fileA\n$_empty fileB\n" "" ""
- touch testFile && chattr -v 1234 testFile 2>/dev/null || ((++SKIP))
- testing "-v version" "lsattr -v testFile | awk '{print \$1}' &&
- chattr -v 4567 testFile && lsattr -v testFile | awk '{print \$1}';
- rm -rf testFile" "1234\n4567\n" "" ""
- mkdir -p a/b/c && touch a/b/c/fA a/b/c/fB
- testing "-R" "chattr -R +a a && lsattr a/b/c/fA a/b/c/fB | clean &&
- chattr -R -a a && rm -rf a" \
- "$_a a/b/c/fA\n$_a a/b/c/fB\n" "" ""
- rm -rf a
- # Clean up
- rm -rf testattr
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