[prev in list] [next in list] [prev in thread] [next in thread]
List: linux-api
Subject: Re: [PATCH v2 0/3] xfs: add O_TMPFILE support
From: Zhi Yong Wu <zwu.kernel () gmail ! com>
Date: 2013-12-28 10:04:53
Message-ID: CAEH94LhHC9t-9KGkUr5ppF1dcebRmtkXaHLn7BFR5dZGgwSAuQ () mail ! gmail ! com
[Download RAW message or body]
On Thu, Dec 26, 2013 at 4:51 PM, Christoph Hellwig <hch@infradead.org> wrote:
> Both patches looks good to me,
>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
Indeed thanks for your review. ok, i will place them to my TODO list.
>
> But now we need to make sure we can exercise it, which will need
> support for tmpfile and flink commands in xfs_io.
>
> And tests that use those commands in xfstests. At a minimum I'd
> suggest:
>
> - test creating read-only/read-write/executable files
> - check how permission bits actually work for O_TMPFILE and
> enforce that (unfortunately I can't find any documentation for that)
> - check that creating non-regular files is properly rejected
> - check that flink works on O_TMPFILE files, but doesn't work on
> on other files
>
> For an additional XFS-specific test I'd recommend:
>
> - creating a tmpfile, use src/godown to force the filesystem down and
> check that repair recoveres the unlinked inode list
> - creating a tmpfile, flinking it, use src/godown to force the
> filesystem down and check that repair does not have to recover
> the unlink inode list.
>
> On Wed, Dec 18, 2013 at 08:22:38AM +0800, Zhi Yong Wu wrote:
>> From: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
>>
>> HI, folks
>>
>> It's time to post the latest revision out, welcome to any constructive comment, thanks.
>>
>> If anyone is interested in playing with it, you can get this patchset from my dev git on github:
>> git://github.com/wuzhy/kernel.git xfs_tmpfile
>>
>> The patchset was tested against the code snippet from Andy Lutomirski and other test cases:
>> http://lwn.net/Articles/562296/
>> If you have any other better test cases, please let me know, thanks.
>>
>> #include <stdio.h>
>> #include <err.h>
>> #include <fcntl.h>
>> #include <unistd.h>
>> #include <string.h>
>>
>> #define __O_TMPFILE 020000000
>> #define O_DIRECTORY 0200000
>> #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
>> #define AT_EMPTY_PATH 0x1000
>>
>> int main(int argc, char **argv)
>> {
>> char buf[128];
>>
>> if (argc != 3)
>> errx(1, "Usage: flinktest PATH linkat|proc");
>>
>> int fd = open(".", O_TMPFILE | O_RDWR, 0600);
>> if (fd == -1)
>> err(1, "O_TMPFILE");
>> else
>> printf("fd #: %d\n", fd);
>>
>> write(fd, "test", 4);
>>
>> if (!strcmp(argv[2], "linkat")) {
>> if (linkat(fd, "", AT_FDCWD, argv[1], AT_EMPTY_PATH) != 0)
>> err(1, "linkat");
>> } else if (!strcmp(argv[2], "proc")) {
>> sprintf(buf, "/proc/self/fd/%d", fd);
>> if (linkat(AT_FDCWD, buf, AT_FDCWD, argv[1], AT_SYMLINK_FOLLOW) != 0)
>> err(1, "linkat");
>> } else {
>> errx(1, "invalid mode");
>> }
>>
>> return 0;
>> }
>>
>> Changelog from v1:
>> - Fixed one chunk of the comments from Christoph Hellwig and Jeff Liu.
>>
>> v1:
>> - Addressed the comments from Dave Chinner and Christoph Hellwig.
>>
>> Zhi Yong Wu (3):
>> xfs: factor prid related codes into xfs_get_initial_prid()
>> xfs: add O_TMPFILE support
>> xfs: allow linkat() on O_TMPFILE files
>>
>> fs/xfs/xfs_inode.c | 123 ++++++++++++++++++++++++++++++++++++++++++++--
>> fs/xfs/xfs_inode.h | 12 +++++
>> fs/xfs/xfs_iops.c | 16 ++++++
>> fs/xfs/xfs_shared.h | 4 +-
>> fs/xfs/xfs_symlink.c | 5 +--
>> fs/xfs/xfs_trans_resv.c | 55 +++++++++++++++++++--
>> fs/xfs/xfs_trans_resv.h | 2 +
>> 7 files changed, 202 insertions(+), 15 deletions(-)
>>
>> --
>> 1.7.6.5
>>
>> _______________________________________________
>> xfs mailing list
>> xfs@oss.sgi.com
>> http://oss.sgi.com/mailman/listinfo/xfs
> ---end quoted text---
--
Regards,
Zhi Yong Wu
--
To unsubscribe from this list: send the line "unsubscribe linux-api" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
[prev in list] [next in list] [prev in thread] [next in thread]
Configure |
About |
News |
Add a list |
Sponsored by KoreLogic