From: jeff.liu-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org Subject: [PATCH 2/3] container quota tool: add quotaio for lxc Date: Wed, 30 May 2012 23:07:57 +0800 Message-ID: <1338390478-13951-2-git-send-email-jeff.liu@oracle.com> References: <1338390478-13951-1-git-send-email-jeff.liu@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: tytso-3s7WtUTddSA@public.gmane.org, jack-AlSwsSmVLrQ@public.gmane.org, david-FqsqvQoI3Ljby3iVrkZq2A@public.gmane.org, hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org, bpm-sJ/iWh9BUns@public.gmane.org, christopher.jones-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, tm-d1IQDZat3X0@public.gmane.org, linux-ext4-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, chris.mason-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, tinguely-sJ/iWh9BUns@public.gmane.org To: containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Return-path: In-Reply-To: <1338390478-13951-1-git-send-email-jeff.liu-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org List-Id: linux-ext4.vger.kernel.org Add quotaio_lxc.c[.h] to isolate container quotactl operations. Signed-off-by: Jie Liu --- quotaio_lxc.c | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ quotaio_lxc.h | 4 +++ 2 files changed, 82 insertions(+), 0 deletions(-) create mode 100644 quotaio_lxc.c create mode 100644 quotaio_lxc.h diff --git a/quotaio_lxc.c b/quotaio_lxc.c new file mode 100644 index 0000000..b3a8144 --- /dev/null +++ b/quotaio_lxc.c @@ -0,0 +1,78 @@ +#include "config.h" + +#include +#include +#include +#include +#include +#include + +#include "pot.h" +#include "common.h" +#include "quotaio.h" +#include "quotaio_generic.h" +#include "quota.h" +#include "quotasys.h" +#include "dqblk_lxc.h" + +int lxc_init_io(struct quota_handle *h); +int lxc_write_info(struct quota_handle *h); +struct dquot *lxc_read_dquot(struct quota_handle *h, qid_t id); +int lxc_commit_dquot(struct dquot *dquot, int flags); +int lxc_scan_dquots(struct quota_handle *h, int (*process_dquot)(struct +dquot *dquot, char *dqname)); + +struct quotafile_ops quotafile_ops_lxc = { +init_io: lxc_init_io, +write_info: lxc_write_info, +read_dquot: lxc_read_dquot, +commit_dquot: lxc_commit_dquot, +scan_dquots: lxc_scan_dquots +}; + +/* + * Initialize container quota information + */ +int lxc_init_io(struct quota_handle *h) +{ + /* + * FIXME: at first, before turning LXC quota on, + * call vfs_get_info() will failed as ENOSCH, so + * just return 0 is ok. + * Should we consider to call vfs_get_info(h) here? + */ + return 0; +} + +/* + * Write information (grace times) + */ +int lxc_write_info(struct quota_handle *h) +{ + return vfs_set_info(h, IIF_BGRACE | IIF_IGRACE); +} + +struct dquot *lxc_read_dquot(struct quota_handle *h, qid_t id) +{ + struct dquot *dquot = get_empty_dquot(); + + dquot->dq_id = id; + dquot->dq_h = h; + memset(&dquot->dq_dqb, 0, sizeof(struct util_dqblk)); + if (vfs_get_dquot(dquot) < 0) { + free(dquot); + return NULL; + } + return dquot; +} + +int lxc_commit_dquot(struct dquot *dquot, int flags) +{ + return vfs_set_dquot(dquot, flags); +} + +int lxc_scan_dquots(struct quota_handle *h, int (*process_dquot)(struct +dquot *dquot, char *dqname)) +{ + return generic_scan_dquots(h, process_dquot, vfs_get_dquot); +} diff --git a/quotaio_lxc.h b/quotaio_lxc.h new file mode 100644 index 0000000..2ae2899 --- /dev/null +++ b/quotaio_lxc.h @@ -0,0 +1,4 @@ +#ifndef GUARD_QUOTAIO_GENERIC_H +#define GUARD_QUOTAIO_GENERIC_H + +#endif -- 1.7.9