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https://github.com/versity/scoutfs.git
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Auke Kok
11c041d2ea
Instead of messing with quotes and using grep for the correct xattr name, directly query the value of the xattr being tested only, and compare that to the input. Side effect is that this is significantly simpler and faster. Signed-off-by: Auke Kok <auke.kok@versity.com>
121 lines
3.1 KiB
Bash
121 lines
3.1 KiB
Bash
#
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# simple xattr unit tests
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#
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t_require_commands hexdump setfattr getfattr cmp touch dumb_setxattr
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FILE="$T_D0/file"
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NR=500
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long_string() {
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local chars=$1
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local bytes=$(((chars + 1) / 2))
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local huge
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huge=$(hexdump -vn "$bytes" -e ' /1 "%02x"' /dev/urandom)
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echo ${huge:0:$chars}
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}
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# delete each xattr afterwards so they don't accumulate
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test_xattr_lengths() {
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local name_len=$1
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local val_len=$2
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local name="user.$(long_string $name_len)"
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local val="$(long_string $val_len)"
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echo "key len $name_len val len $val_len" >> "$T_TMP.log"
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setfattr -n $name -v \"$val\" "$FILE"
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getfattr -d --only-values --absolute-names "$FILE" -n "$name" > "$T_TMP.got"
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echo -n "$val" > "$T_TMP.good"
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cmp "$T_TMP.good" "$T_TMP.got" || \
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t_fail "cmp failed name len $name_len val len $val_len"
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setfattr -x $name "$FILE"
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}
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print_and_run() {
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printf '%s\n' "$*" | t_filter_fs
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"$@" || echo "returned nonzero status: $?"
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}
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# fill a buffer with strings that identify their byte offset
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offs=""
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for o in $(seq 0 7 $((65535 - 7))); do
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offs+="$(printf "[%5u]" $o)"
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done
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change_val_sizes() {
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local name="$1"
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local file="$2"
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local from="$3"
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local to="$4"
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while : ; do
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setfattr -x "$name" "$file" > /dev/null 2>&1
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setfattr -n "$name" -v "${offs:0:$from}" "$file"
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setfattr -n "$name" -v "${offs:0:$to}" "$file"
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if ! diff -u <(echo -n "${offs:0:$to}") <(getfattr --absolute-names --only-values -n "$name" $file) ; then
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echo "setting $name from $from to $to failed"
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fi
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if [ $from == $3 ]; then
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from=$4
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to=$3
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else
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break
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fi
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done
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}
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echo "=== XATTR_ flag combinations"
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touch "$FILE"
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print_and_run dumb_setxattr -p "$FILE" -n user.test -v val -c -r
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print_and_run dumb_setxattr -p "$FILE" -n user.test -v val -r
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print_and_run dumb_setxattr -p "$FILE" -n user.test -v val -c
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print_and_run dumb_setxattr -p "$FILE" -n user.test -v val -c
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print_and_run dumb_setxattr -p "$FILE" -n user.test -v val -r
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rm "$FILE"
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echo "=== bad lengths"
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touch "$FILE"
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setfattr -n \"\" -v val "$FILE" 2>&1 | t_filter_fs
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setfattr -n user.$(long_string 256) -v val "$FILE" 2>&1 | t_filter_fs
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setfattr -n user.$(long_string 1000) -v val "$FILE" 2>&1 | t_filter_fs
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setfattr -n user.name -v $(long_string 65536) "$FILE" 2>&1 | t_filter_fs
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# sync to make sure all reserved items are dirtied each time
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echo "=== good length boundaries"
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# 255 key len - strlen("user.")
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for name_len in 1 249 250; do
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for val_len in 0 1 254 255 256 65534 65535; do
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sync
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test_xattr_lengths $name_len $val_len
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done
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done
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echo "=== $NR random lengths"
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touch "$FILE"
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for i in $(seq 1 $NR); do
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name_len=$((1 + (RANDOM % 250)))
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val_len=$((RANDOM % 65536))
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test_xattr_lengths $name_len $val_len
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done
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echo "=== alternate val size between interesting sizes"
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name="user.test"
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ITEM=896
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HDR=$((8 + 9))
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# one full item apart
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change_val_sizes $name "$FILE" $(((ITEM * 2) - HDR)) $(((ITEM * 3) - HDR))
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# multiple full items apart
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change_val_sizes $name "$FILE" $(((ITEM * 6) - HDR)) $(((ITEM * 9) - HDR))
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# item boundary fence posts
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change_val_sizes $name "$FILE" $(((ITEM * 5) - HDR - 1)) $(((ITEM * 13) - HDR + 1))
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# min and max
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change_val_sizes $name "$FILE" 1 65535
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t_pass
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