From: Anand Jain <Anand.Jain@oracle.com>
To: Eric Sandeen <sandeen@redhat.com>
Cc: linux-btrfs@vger.kernel.org, dsterba@suse.cz, gene@czarc.net
Subject: Re: [PATCH 05/10] Btrfs-progs: add function btrfs_get_subvol to get root_info of a subvol
Date: Fri, 25 Jan 2013 17:20:59 +0800 [thread overview]
Message-ID: <51024E7B.2070401@oracle.com> (raw)
In-Reply-To: <5100BD56.7080907@redhat.com>
On 01/24/2013 12:49 PM, Eric Sandeen wrote:
> On 1/23/13 2:12 AM, Anand Jain wrote:
>> We need a function which can get the root_info of a given
>> subvol. This is in preparation to add support for the show
>> sub-cli.
>>
>> Signed-off-by: Anand Jain <anand.jain@oracle.com>
>> ---
>> btrfs-list.c | 38 ++++++++++++++++++++++++++++++++++++++
>> btrfs-list.h | 1 +
>> 2 files changed, 39 insertions(+)
>>
>> diff --git a/btrfs-list.c b/btrfs-list.c
>> index 1851f3e..ec64a36 100644
>> --- a/btrfs-list.c
>> +++ b/btrfs-list.c
>> @@ -1455,6 +1455,44 @@ int btrfs_list_subvols_print(int fd, struct btrfs_list_filter_set *filter_set,
>> return 0;
>> }
>>
>> +int btrfs_get_subvol(int fd, struct root_info *the_ri)
>> +{
>> + int ret = -1;
>> + struct root_lookup rl;
>> + struct rb_node *rbn;
>> + struct root_info *ri;
>> + u64 root_id = btrfs_list_get_path_rootid(fd);
>> +
>> + if (btrfs_list_subvols(fd, &rl))
>> + return 13;
>
> Unless there is an ongoing plan to actually do something with these
> magical returns, can we maybe just be normal about error return values
> in new code?
>
> The caller you add only cares about 0 or not, right? Or is there some other
> purpose for "13" I'm not aware of?
>
> Thanks,
> -Eric
It was as in the original return value. But I think
its time we fix this. now. accepted.
Thanks, Anand
next prev parent reply other threads:[~2013-01-25 9:14 UTC|newest]
Thread overview: 131+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-25 9:19 [PATCH 00/10 V2] add show sub-command for btrfs subvol cli Anand Jain
2013-01-23 8:12 ` [PATCH 00/10] " Anand Jain
2013-01-23 8:12 ` [PATCH 01/10] Btrfs-progs: move open_file_or_dir() to utils.c Anand Jain
2013-01-24 4:39 ` Eric Sandeen
2013-01-24 9:23 ` Stefan Behrens
2013-01-24 17:57 ` Goffredo Baroncelli
2013-01-24 19:42 ` Eric Sandeen
2013-01-24 22:09 ` Goffredo Baroncelli
2013-01-24 22:36 ` Chris Mason
2013-01-24 22:49 ` David Sterba
2013-01-24 22:52 ` Avi Miller
2013-01-25 16:14 ` Eric Sandeen
2013-01-25 16:48 ` Hugo Mills
2013-01-25 18:47 ` Gene Czarcinski
2013-01-28 3:12 ` Anand Jain
2013-01-25 15:19 ` Eric Sandeen
2013-01-25 9:21 ` Anand Jain
2013-01-23 8:12 ` [PATCH 02/10] Btrfs-progs: move printing subvol list outside of btrfs_list_subvols Anand Jain
2013-01-23 8:12 ` [PATCH 03/10] Btrfs-progs: add parent uuid for snapshots Anand Jain
2013-01-23 8:12 ` [PATCH 04/10] Btrfs-progs: move struct root_info to btrfs-list.h Anand Jain
2013-01-23 8:12 ` [PATCH 05/10] Btrfs-progs: add function btrfs_get_subvol to get root_info of a subvol Anand Jain
2013-01-24 4:49 ` Eric Sandeen
2013-01-25 9:20 ` Anand Jain [this message]
2013-01-23 8:12 ` [PATCH 06/10] Btrfs-progs: add method to filter snapshots by parent uuid Anand Jain
2013-01-23 8:12 ` [PATCH 07/10] Btrfs-progs: put find_mount_root() in commands.h Anand Jain
2013-01-23 8:12 ` [PATCH 08/10] Btrfs-progs: make printing subvol extensible to newer layouts Anand Jain
2013-01-23 8:12 ` [PATCH 09/10] Btrfs-progs: make get_subvol_name non cmds-send specific Anand Jain
2013-01-23 8:12 ` [PATCH 10/10] Btrfs-progs: add show subcommand to subvol cli Anand Jain
2013-01-24 5:06 ` Eric Sandeen
2013-01-24 19:42 ` Zach Brown
2013-01-24 23:14 ` Chris Mason
2013-01-24 23:24 ` Zach Brown
2013-01-25 9:24 ` Anand Jain
2013-01-23 21:57 ` [PATCH 00/10] add show sub-command for btrfs " Gene Czarcinski
2013-01-24 4:11 ` Anand Jain
2013-01-24 20:52 ` Gene Czarcinski
2013-01-25 9:23 ` Anand Jain
2013-01-25 9:19 ` [PATCH 01/10] Btrfs-progs: move open_file_or_dir() to utils.c Anand Jain
2013-01-25 9:19 ` [PATCH 02/10] Btrfs-progs: move printing subvol list outside of btrfs_list_subvols Anand Jain
2013-01-25 9:19 ` [PATCH 03/10] Btrfs-progs: add parent uuid for snapshots Anand Jain
2013-01-25 9:19 ` [PATCH 04/10] Btrfs-progs: move struct root_info to btrfs-list.h Anand Jain
2013-01-25 9:19 ` [PATCH 05/10] Btrfs-progs: add function btrfs_get_subvol to get root_info of a subvol Anand Jain
2013-01-25 9:19 ` [PATCH 06/10] Btrfs-progs: add method to filter snapshots by parent uuid Anand Jain
2013-01-25 9:19 ` [PATCH 07/10] Btrfs-progs: put find_mount_root() in commands.h Anand Jain
2013-01-25 9:19 ` [PATCH 08/10] Btrfs-progs: make printing subvol extensible to newer layouts Anand Jain
2013-01-25 9:19 ` [PATCH 09/10] Btrfs-progs: make get_subvol_name non cmds-send specific Anand Jain
2013-01-25 9:19 ` [PATCH 10/10] Btrfs-progs: add show subcommand to subvol cli Anand Jain
2013-01-25 9:30 ` [RESEND] [PATCH 00/10 V2] add show sub-command for btrfs " Anand Jain
2013-01-25 9:30 ` [PATCH 01/10] Btrfs-progs: move open_file_or_dir() to utils.c Anand Jain
2013-01-25 9:30 ` [PATCH 02/10] Btrfs-progs: move printing subvol list outside of btrfs_list_subvols Anand Jain
2013-01-25 9:30 ` [PATCH 03/10] Btrfs-progs: add parent uuid for snapshots Anand Jain
2013-01-25 9:30 ` [PATCH 04/10] Btrfs-progs: move struct root_info to btrfs-list.h Anand Jain
2013-01-25 9:30 ` [PATCH 05/10] Btrfs-progs: add function btrfs_get_subvol to get root_info of a subvol Anand Jain
2013-01-25 9:30 ` [PATCH 06/10] Btrfs-progs: add method to filter snapshots by parent uuid Anand Jain
2013-01-25 9:30 ` [PATCH 07/10] Btrfs-progs: put find_mount_root() in commands.h Anand Jain
2013-01-25 9:30 ` [PATCH 08/10] Btrfs-progs: make printing subvol extensible to newer layouts Anand Jain
2013-01-25 9:30 ` [PATCH 09/10] Btrfs-progs: make get_subvol_name non cmds-send specific Anand Jain
2013-01-25 9:30 ` [PATCH 10/10] Btrfs-progs: add show subcommand to subvol cli Anand Jain
2013-01-25 10:07 ` Stefan Behrens
2013-01-28 5:26 ` Anand Jain
2013-01-28 4:10 ` [PATCH 00/10 v3] add show sub-command for btrfs " Anand Jain
2013-01-28 4:10 ` [PATCH 01/10] Btrfs-progs: move open_file_or_dir() to utils.c Anand Jain
2013-01-28 4:10 ` [PATCH 02/10] Btrfs-progs: move printing subvol list outside of btrfs_list_subvols Anand Jain
2013-01-28 4:10 ` [PATCH 03/10] Btrfs-progs: add parent uuid for snapshots Anand Jain
2013-01-28 4:10 ` [PATCH 04/10] Btrfs-progs: move struct root_info to btrfs-list.h Anand Jain
2013-01-28 4:10 ` [PATCH 05/10] Btrfs-progs: add function btrfs_get_subvol to get root_info of a subvol Anand Jain
2013-01-28 4:10 ` [PATCH 06/10] Btrfs-progs: add method to filter snapshots by parent uuid Anand Jain
2013-01-28 4:10 ` [PATCH 07/10] Btrfs-progs: put find_mount_root() in commands.h Anand Jain
2013-01-28 4:10 ` [PATCH 08/10] Btrfs-progs: make printing subvol extensible to newer layouts Anand Jain
2013-01-28 4:10 ` [PATCH 09/10] Btrfs-progs: make get_subvol_name non cmds-send specific Anand Jain
2013-01-28 4:10 ` [PATCH 10/10] Btrfs-progs: add show subcommand to subvol cli Anand Jain
2013-01-28 5:29 ` [PATCH 00/10 v3] add show sub-command for btrfs " Anand Jain
2013-01-28 5:22 ` [RESEND] " Anand Jain
2013-01-28 5:22 ` [PATCH 01/10] Btrfs-progs: move open_file_or_dir() to utils.c Anand Jain
2013-01-28 18:08 ` David Sterba
2013-01-28 5:22 ` [PATCH 02/10] Btrfs-progs: move printing subvol list outside of btrfs_list_subvols Anand Jain
2013-01-28 5:22 ` [PATCH 03/10] Btrfs-progs: add parent uuid for snapshots Anand Jain
2013-01-28 5:22 ` [PATCH 04/10] Btrfs-progs: move struct root_info to btrfs-list.h Anand Jain
2013-01-28 5:22 ` [PATCH 05/10] Btrfs-progs: add function btrfs_get_subvol to get root_info of a subvol Anand Jain
2013-01-29 4:42 ` Wang Shilong
2013-01-28 18:04 ` David Sterba
2013-01-29 6:59 ` Anand Jain
2013-01-28 5:22 ` [PATCH 06/10] Btrfs-progs: add method to filter snapshots by parent uuid Anand Jain
2013-01-28 5:22 ` [PATCH 07/10] Btrfs-progs: put find_mount_root() in commands.h Anand Jain
2013-01-28 5:22 ` [PATCH 08/10] Btrfs-progs: make printing subvol extensible to newer layouts Anand Jain
2013-01-28 5:22 ` [PATCH 09/10] Btrfs-progs: make get_subvol_name non cmds-send specific Anand Jain
2013-01-28 5:22 ` [PATCH 10/10] Btrfs-progs: add show subcommand to subvol cli Anand Jain
2013-01-29 6:48 ` [PATCH 00/12 v4] add show sub-command for btrfs " Anand Jain
2013-01-29 6:48 ` [PATCH 01/12] Btrfs-progs: move open_file_or_dir() to utils.c Anand Jain
2013-01-29 6:48 ` [PATCH 02/12] Btrfs-progs: move printing subvol list outside of btrfs_list_subvols Anand Jain
2013-01-30 3:27 ` Wang Shilong
2013-01-30 9:57 ` Anand Jain
2013-01-29 6:48 ` [PATCH 03/12] Btrfs-progs: add parent uuid for snapshots Anand Jain
2013-01-29 6:48 ` [PATCH 04/12] Btrfs-progs: move struct root_info to btrfs-list.h Anand Jain
2013-01-29 6:48 ` [PATCH 05/12] Btrfs-progs: add function btrfs_get_subvol to get root_info of a subvol Anand Jain
2013-01-29 6:48 ` [PATCH 06/12] Btrfs-progs: add method to filter snapshots by parent uuid Anand Jain
2013-01-29 6:48 ` [PATCH 07/12] Btrfs-progs: put find_mount_root() in commands.h Anand Jain
2013-01-29 6:48 ` [PATCH 08/12] Btrfs-progs: make printing subvol extensible to newer layouts Anand Jain
2013-01-29 6:48 ` [PATCH 09/12] Btrfs-progs: make get_subvol_name non cmds-send specific Anand Jain
2013-01-29 6:48 ` [PATCH 10/12] Btrfs-progs: add show subcommand to subvol cli Anand Jain
2013-01-30 10:32 ` Wang Shilong
2013-01-31 3:13 ` Anand Jain
2013-01-29 6:49 ` [PATCH 11/12] Btrfs-progs: filter the deleted subvolumes when listing snapshots Anand Jain
2013-01-29 6:49 ` [PATCH 12/12] Btrfs-progs: update btrfs_get_subvol to be inline with resolve_root ret changes Anand Jain
2013-01-30 9:56 ` [PATCH 00/12 v5] Btrfs-progs: add show sub-command for btrfs subvol cli Anand Jain
2013-01-30 9:56 ` [PATCH 01/12] Btrfs-progs: move printing subvol list outside of btrfs_list_subvols Anand Jain
2013-01-30 9:56 ` [PATCH 02/12] Btrfs-progs: add parent uuid for snapshots Anand Jain
2013-01-30 9:56 ` [PATCH 03/12] Btrfs-progs: move struct root_info to btrfs-list.h Anand Jain
2013-01-30 9:56 ` [PATCH 04/12] Btrfs-progs: add function btrfs_get_subvol to get root_info of a subvol Anand Jain
2013-01-30 9:56 ` [PATCH 05/12] Btrfs-progs: add method to filter snapshots by parent uuid Anand Jain
2013-01-30 9:56 ` [PATCH 06/12] Btrfs-progs: put find_mount_root() in commands.h Anand Jain
2013-01-30 9:56 ` [PATCH 07/12] Btrfs-progs: make printing subvol extensible to newer layouts Anand Jain
2013-01-30 9:56 ` [PATCH 08/12] Btrfs-progs: make get_subvol_name non cmds-send specific Anand Jain
2013-01-30 9:56 ` [PATCH 09/12] Btrfs-progs: add show subcommand to subvol cli Anand Jain
2013-01-30 9:56 ` [PATCH 10/12] Btrfs-progs: filter the deleted subvolumes when listing snapshots Anand Jain
2013-01-30 9:56 ` [PATCH 11/12] Btrfs-progs: update btrfs_get_subvol to be inline with resolve_root ret changes Anand Jain
2013-01-30 9:56 ` [PATCH 12/12] Btrfs-progs: Fix a small memory leak in managing the btrfs list filter Anand Jain
2013-02-01 7:56 ` [PATCH 00/13 v6] Btrfs-progs: add show sub-command for btrfs subvol cli Anand Jain
2013-02-01 7:56 ` [PATCH 01/13] Btrfs-progs: move printing subvol list outside of btrfs_list_subvols Anand Jain
2013-02-01 7:56 ` [PATCH 02/13] Btrfs-progs: add parent uuid for snapshots Anand Jain
2013-02-01 7:56 ` [PATCH 03/13] Btrfs-progs: move struct root_info to btrfs-list.h Anand Jain
2013-02-01 7:56 ` [PATCH 04/13] Btrfs-progs: add function btrfs_get_subvol to get root_info of a subvol Anand Jain
2013-02-01 7:56 ` [PATCH 05/13] Btrfs-progs: add method to filter snapshots by parent uuid Anand Jain
2013-02-01 7:56 ` [PATCH 06/13] Btrfs-progs: put find_mount_root() in commands.h Anand Jain
2013-02-01 7:56 ` [PATCH 07/13] Btrfs-progs: make printing subvol extensible to newer layouts Anand Jain
2013-02-01 7:56 ` [PATCH 08/13] Btrfs-progs: make get_subvol_name non cmds-send specific Anand Jain
2013-02-01 7:56 ` [PATCH 09/13] Btrfs-progs: add show subcommand to subvol cli Anand Jain
2013-02-01 7:56 ` [PATCH 10/13] Btrfs-progs: filter the deleted subvolumes when listing snapshots Anand Jain
2013-02-01 7:56 ` [PATCH 11/13] Btrfs-progs: update btrfs_get_subvol to be inline with resolve_root ret changes Anand Jain
2013-02-01 7:56 ` [PATCH 12/13] Btrfs-progs: Fix a small memory leak in managing the btrfs list filter Anand Jain
2013-02-01 7:56 ` [PATCH 13/13] Btrfs-progs: add subvol flags to print Anand Jain
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