Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753375AbZGOVV4 (ORCPT ); Wed, 15 Jul 2009 17:21:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752123AbZGOVVx (ORCPT ); Wed, 15 Jul 2009 17:21:53 -0400 Received: from cobra.newdream.net ([66.33.216.30]:42897 "EHLO cobra.newdream.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752049AbZGOVVM (ORCPT ); Wed, 15 Jul 2009 17:21:12 -0400 From: Sage Weil To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Sage Weil Subject: [PATCH 17/20] ceph: ioctls Date: Wed, 15 Jul 2009 14:24:47 -0700 Message-Id: <1247693090-27796-18-git-send-email-sage@newdream.net> X-Mailer: git-send-email 1.5.6.5 In-Reply-To: <1247693090-27796-17-git-send-email-sage@newdream.net> References: <1247693090-27796-1-git-send-email-sage@newdream.net> <1247693090-27796-2-git-send-email-sage@newdream.net> <1247693090-27796-3-git-send-email-sage@newdream.net> <1247693090-27796-4-git-send-email-sage@newdream.net> <1247693090-27796-5-git-send-email-sage@newdream.net> <1247693090-27796-6-git-send-email-sage@newdream.net> <1247693090-27796-7-git-send-email-sage@newdream.net> <1247693090-27796-8-git-send-email-sage@newdream.net> <1247693090-27796-9-git-send-email-sage@newdream.net> <1247693090-27796-10-git-send-email-sage@newdream.net> <1247693090-27796-11-git-send-email-sage@newdream.net> <1247693090-27796-12-git-send-email-sage@newdream.net> <1247693090-27796-13-git-send-email-sage@newdream.net> <1247693090-27796-14-git-send-email-sage@newdream.net> <1247693090-27796-15-git-send-email-sage@newdream.net> <1247693090-27796-16-git-send-email-sage@newdream.net> <1247693090-27796-17-git-send-email-sage@newdream.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2941 Lines: 108 A few Ceph ioctls for getting and setting file layout (striping) parameters. Signed-off-by: Sage Weil --- fs/ceph/ioctl.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ fs/ceph/ioctl.h | 12 ++++++++++ 2 files changed, 77 insertions(+), 0 deletions(-) create mode 100644 fs/ceph/ioctl.c create mode 100644 fs/ceph/ioctl.h diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c new file mode 100644 index 0000000..69c65c1 --- /dev/null +++ b/fs/ceph/ioctl.c @@ -0,0 +1,65 @@ +#include "ioctl.h" +#include "super.h" +#include "ceph_debug.h" + +int ceph_debug_ioctl __read_mostly = -1; +#define DOUT_MASK DOUT_MASK_IOCTL +#define DOUT_VAR ceph_debug_ioctl + + +/* + * ioctls + */ + +static long ceph_ioctl_get_layout(struct file *file, void __user *arg) +{ + struct ceph_inode_info *ci = ceph_inode(file->f_dentry->d_inode); + int err; + + err = ceph_do_getattr(file->f_dentry->d_inode, CEPH_STAT_CAP_LAYOUT); + if (!err) { + if (copy_to_user(arg, &ci->i_layout, sizeof(ci->i_layout))) + return -EFAULT; + } + + return err; +} + +static long ceph_ioctl_set_layout(struct file *file, void __user *arg) +{ + struct inode *inode = file->f_dentry->d_inode; + struct inode *parent_inode = file->f_dentry->d_parent->d_inode; + struct ceph_mds_client *mdsc = &ceph_sb_to_client(inode->i_sb)->mdsc; + struct ceph_mds_request *req; + struct ceph_file_layout layout; + int err; + + /* copy and validate */ + if (copy_from_user(&layout, arg, sizeof(layout))) + return -EFAULT; + + req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETLAYOUT, + USE_AUTH_MDS); + if (IS_ERR(req)) + return PTR_ERR(req); + req->r_inode = igrab(inode); + req->r_inode_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL; + req->r_args.setlayout.layout = layout; + + err = ceph_mdsc_do_request(mdsc, parent_inode, req); + ceph_mdsc_put_request(req); + return err; +} + +long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + dout(10, "ioctl file %p cmd %u arg %lu\n", file, cmd, arg); + switch (cmd) { + case CEPH_IOC_GET_LAYOUT: + return ceph_ioctl_get_layout(file, (void __user *)arg); + + case CEPH_IOC_SET_LAYOUT: + return ceph_ioctl_set_layout(file, (void __user *)arg); + } + return -ENOTTY; +} diff --git a/fs/ceph/ioctl.h b/fs/ceph/ioctl.h new file mode 100644 index 0000000..537c27b --- /dev/null +++ b/fs/ceph/ioctl.h @@ -0,0 +1,12 @@ +#ifndef FS_CEPH_IOCTL_H +#define FS_CEPH_IOCTL_H + +#include +#include "types.h" + +#define CEPH_IOCTL_MAGIC 0x97 + +#define CEPH_IOC_GET_LAYOUT _IOR(CEPH_IOCTL_MAGIC, 1, struct ceph_file_layout) +#define CEPH_IOC_SET_LAYOUT _IOW(CEPH_IOCTL_MAGIC, 2, struct ceph_file_layout) + +#endif -- 1.5.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/