xfs: test attr_list_by_handle cursor iteration

Apparently the XFS attr_list_by_handle ioctl has never actually
copied the cursor contents back to user space, which means that
iteration has never worked.  Add a test case for this and see

"xfs: in _attrlist_by_handle, copy the cursor back to userspace".

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
This commit is contained in:
Darrick J. Wong
2016-08-04 19:03:51 -07:00
committed by Eryu Guan
parent 27516d43f4
commit 73f8e854f6
6 changed files with 191 additions and 1 deletions
+1
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@@ -38,6 +38,7 @@
/src/alloc
/src/append_reader
/src/append_writer
/src/attr-list-by-handle-cursor-test
/src/bstat
/src/bulkstat_unlink_test
/src/bulkstat_unlink_test_modified
+2 -1
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@@ -20,7 +20,8 @@ LINUX_TARGETS = xfsctl bstat t_mtab getdevicesize preallo_rw_pattern_reader \
bulkstat_unlink_test_modified t_dir_offset t_futimens t_immutable \
stale_handle pwrite_mmap_blocked t_dir_offset2 seek_sanity_test \
seek_copy_test t_readdir_1 t_readdir_2 fsync-tester nsexec cloner \
renameat2 t_getcwd e4compact test-nextquota punch-alternating
renameat2 t_getcwd e4compact test-nextquota punch-alternating \
attr-list-by-handle-cursor-test
SUBDIRS =
+118
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@@ -0,0 +1,118 @@
/*
* Copyright (C) 2016 Oracle. All Rights Reserved.
*
* Author: Darrick J. Wong <darrick.wong@oracle.com>
*
* This program 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 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it would 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <attr/attributes.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <stdio.h>
#include <asm/types.h>
#include <xfs/xfs.h>
#include <xfs/handle.h>
#define ATTRBUFSZ 1024
#define BSTATBUF_NR 32
/* Read all the extended attributes of a file handle. */
void
read_handle_xattrs(
struct xfs_handle *handle)
{
struct attrlist_cursor cur;
char attrbuf[ATTRBUFSZ];
char *firstname = NULL;
struct attrlist *attrlist = (struct attrlist *)attrbuf;
struct attrlist_ent *ent;
int i;
int flags = 0;
int error;
memset(&cur, 0, sizeof(cur));
while ((error = attr_list_by_handle(handle, sizeof(*handle),
attrbuf, ATTRBUFSZ, flags,
&cur)) == 0) {
for (i = 0; i < attrlist->al_count; i++) {
ent = ATTR_ENTRY(attrlist, i);
if (i != 0)
continue;
if (firstname == NULL) {
firstname = malloc(ent->a_valuelen);
memcpy(firstname, ent->a_name, ent->a_valuelen);
} else {
if (memcmp(firstname, ent->a_name,
ent->a_valuelen) == 0)
fprintf(stderr,
"Saw duplicate xattr \"%s\", buggy XFS?\n",
ent->a_name);
else
fprintf(stderr,
"Test passes.\n");
goto out;
}
}
if (!attrlist->al_more)
break;
}
out:
if (firstname)
free(firstname);
if (error)
perror("attr_list_by_handle");
return;
}
int main(
int argc,
char *argv[])
{
struct xfs_handle *fshandle;
size_t fshandle_len;
struct xfs_handle *handle;
size_t handle_len;
int error;
if (argc != 2) {
fprintf(stderr, "Usage: %s filename\n", argv[0]);
return 1;
}
error = path_to_fshandle(argv[1], (void **)&fshandle, &fshandle_len);
if (error) {
perror("getting fshandle");
return 2;
}
error = path_to_handle(argv[1], (void **)&handle, &handle_len);
if (error) {
perror("getting handle");
return 3;
}
read_handle_xattrs(handle);
free_handle(handle, handle_len);
free_handle(fshandle, fshandle_len);
return 0;
}
Executable
+64
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@@ -0,0 +1,64 @@
#! /bin/bash
# FS QA Test No. 269
#
# Check that attr_list_by_handle copies the cursor back to userspace.
#
#-----------------------------------------------------------------------
# Copyright (c) 2016, Oracle and/or its affiliates. All Rights Reserved.
#
# This program 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.
#
# This program is distributed in the hope that it would 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.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#-----------------------------------------------------------------------
seq=`basename "$0"`
seqres="$RESULT_DIR/$seq"
echo "QA output created by $seq"
here=`pwd`
tmp=/tmp/$$
status=1 # failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15
_cleanup()
{
cd /
rm -rf "$tmp".* $TEST_DIR/fsmap $TEST_DIR/testout
}
# get standard environment, filters and checks
. ./common/rc
. ./common/filter
. ./common/attr
. ./common/populate
# real QA test starts here
_supported_os Linux
_require_scratch
_require_test_program "attr-list-by-handle-cursor-test"
rm -f "$seqres.full"
echo "Format and mount"
_scratch_mkfs > "$seqres.full" 2>&1
_scratch_mount
echo "Stuff file with xattrs"
mkdir $SCRATCH_MNT/foo
__populate_create_attr $SCRATCH_MNT/foo 100
echo "Run test program"
./src/attr-list-by-handle-cursor-test $SCRATCH_MNT/foo
# success, all done
status=0
exit
+5
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@@ -0,0 +1,5 @@
QA output created by 269
Format and mount
Stuff file with xattrs
Run test program
Test passes.
+1
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@@ -264,6 +264,7 @@
266 dump ioctl auto quick
267 dump ioctl tape
268 dump ioctl tape
269 auto quick ioctl
278 repair auto
279 auto mkfs
281 dump ioctl auto quick