mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 10:04:12 +08:00
08c1ac508b
ceph_calc_file_object_mapping() has nothing to do with osdmaps. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
294 lines
7.4 KiB
C
294 lines
7.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <linux/ceph/ceph_debug.h>
|
|
#include <linux/in.h>
|
|
|
|
#include "super.h"
|
|
#include "mds_client.h"
|
|
#include "ioctl.h"
|
|
#include <linux/ceph/striper.h>
|
|
|
|
/*
|
|
* ioctls
|
|
*/
|
|
|
|
/*
|
|
* get and set the file layout
|
|
*/
|
|
static long ceph_ioctl_get_layout(struct file *file, void __user *arg)
|
|
{
|
|
struct ceph_inode_info *ci = ceph_inode(file_inode(file));
|
|
struct ceph_ioctl_layout l;
|
|
int err;
|
|
|
|
err = ceph_do_getattr(file_inode(file), CEPH_STAT_CAP_LAYOUT, false);
|
|
if (!err) {
|
|
l.stripe_unit = ci->i_layout.stripe_unit;
|
|
l.stripe_count = ci->i_layout.stripe_count;
|
|
l.object_size = ci->i_layout.object_size;
|
|
l.data_pool = ci->i_layout.pool_id;
|
|
l.preferred_osd = -1;
|
|
if (copy_to_user(arg, &l, sizeof(l)))
|
|
return -EFAULT;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static long __validate_layout(struct ceph_mds_client *mdsc,
|
|
struct ceph_ioctl_layout *l)
|
|
{
|
|
int i, err;
|
|
|
|
/* validate striping parameters */
|
|
if ((l->object_size & ~PAGE_MASK) ||
|
|
(l->stripe_unit & ~PAGE_MASK) ||
|
|
((unsigned)l->stripe_unit != 0 &&
|
|
((unsigned)l->object_size % (unsigned)l->stripe_unit)))
|
|
return -EINVAL;
|
|
|
|
/* make sure it's a valid data pool */
|
|
mutex_lock(&mdsc->mutex);
|
|
err = -EINVAL;
|
|
for (i = 0; i < mdsc->mdsmap->m_num_data_pg_pools; i++)
|
|
if (mdsc->mdsmap->m_data_pg_pools[i] == l->data_pool) {
|
|
err = 0;
|
|
break;
|
|
}
|
|
mutex_unlock(&mdsc->mutex);
|
|
if (err)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static long ceph_ioctl_set_layout(struct file *file, void __user *arg)
|
|
{
|
|
struct inode *inode = file_inode(file);
|
|
struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
|
|
struct ceph_mds_request *req;
|
|
struct ceph_ioctl_layout l;
|
|
struct ceph_inode_info *ci = ceph_inode(file_inode(file));
|
|
struct ceph_ioctl_layout nl;
|
|
int err;
|
|
|
|
if (copy_from_user(&l, arg, sizeof(l)))
|
|
return -EFAULT;
|
|
|
|
/* validate changed params against current layout */
|
|
err = ceph_do_getattr(file_inode(file), CEPH_STAT_CAP_LAYOUT, false);
|
|
if (err)
|
|
return err;
|
|
|
|
memset(&nl, 0, sizeof(nl));
|
|
if (l.stripe_count)
|
|
nl.stripe_count = l.stripe_count;
|
|
else
|
|
nl.stripe_count = ci->i_layout.stripe_count;
|
|
if (l.stripe_unit)
|
|
nl.stripe_unit = l.stripe_unit;
|
|
else
|
|
nl.stripe_unit = ci->i_layout.stripe_unit;
|
|
if (l.object_size)
|
|
nl.object_size = l.object_size;
|
|
else
|
|
nl.object_size = ci->i_layout.object_size;
|
|
if (l.data_pool)
|
|
nl.data_pool = l.data_pool;
|
|
else
|
|
nl.data_pool = ci->i_layout.pool_id;
|
|
|
|
/* this is obsolete, and always -1 */
|
|
nl.preferred_osd = -1;
|
|
|
|
err = __validate_layout(mdsc, &nl);
|
|
if (err)
|
|
return err;
|
|
|
|
req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETLAYOUT,
|
|
USE_AUTH_MDS);
|
|
if (IS_ERR(req))
|
|
return PTR_ERR(req);
|
|
req->r_inode = inode;
|
|
ihold(inode);
|
|
req->r_num_caps = 1;
|
|
|
|
req->r_inode_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL;
|
|
|
|
req->r_args.setlayout.layout.fl_stripe_unit =
|
|
cpu_to_le32(l.stripe_unit);
|
|
req->r_args.setlayout.layout.fl_stripe_count =
|
|
cpu_to_le32(l.stripe_count);
|
|
req->r_args.setlayout.layout.fl_object_size =
|
|
cpu_to_le32(l.object_size);
|
|
req->r_args.setlayout.layout.fl_pg_pool = cpu_to_le32(l.data_pool);
|
|
|
|
err = ceph_mdsc_do_request(mdsc, NULL, req);
|
|
ceph_mdsc_put_request(req);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Set a layout policy on a directory inode. All items in the tree
|
|
* rooted at this inode will inherit this layout on creation,
|
|
* (It doesn't apply retroactively )
|
|
* unless a subdirectory has its own layout policy.
|
|
*/
|
|
static long ceph_ioctl_set_layout_policy (struct file *file, void __user *arg)
|
|
{
|
|
struct inode *inode = file_inode(file);
|
|
struct ceph_mds_request *req;
|
|
struct ceph_ioctl_layout l;
|
|
int err;
|
|
struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
|
|
|
|
/* copy and validate */
|
|
if (copy_from_user(&l, arg, sizeof(l)))
|
|
return -EFAULT;
|
|
|
|
err = __validate_layout(mdsc, &l);
|
|
if (err)
|
|
return err;
|
|
|
|
req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETDIRLAYOUT,
|
|
USE_AUTH_MDS);
|
|
|
|
if (IS_ERR(req))
|
|
return PTR_ERR(req);
|
|
req->r_inode = inode;
|
|
ihold(inode);
|
|
req->r_num_caps = 1;
|
|
|
|
req->r_args.setlayout.layout.fl_stripe_unit =
|
|
cpu_to_le32(l.stripe_unit);
|
|
req->r_args.setlayout.layout.fl_stripe_count =
|
|
cpu_to_le32(l.stripe_count);
|
|
req->r_args.setlayout.layout.fl_object_size =
|
|
cpu_to_le32(l.object_size);
|
|
req->r_args.setlayout.layout.fl_pg_pool =
|
|
cpu_to_le32(l.data_pool);
|
|
|
|
err = ceph_mdsc_do_request(mdsc, inode, req);
|
|
ceph_mdsc_put_request(req);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Return object name, size/offset information, and location (OSD
|
|
* number, network address) for a given file offset.
|
|
*/
|
|
static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg)
|
|
{
|
|
struct ceph_ioctl_dataloc dl;
|
|
struct inode *inode = file_inode(file);
|
|
struct ceph_inode_info *ci = ceph_inode(inode);
|
|
struct ceph_osd_client *osdc =
|
|
&ceph_sb_to_client(inode->i_sb)->client->osdc;
|
|
struct ceph_object_locator oloc;
|
|
CEPH_DEFINE_OID_ONSTACK(oid);
|
|
u32 xlen;
|
|
u64 tmp;
|
|
struct ceph_pg pgid;
|
|
int r;
|
|
|
|
/* copy and validate */
|
|
if (copy_from_user(&dl, arg, sizeof(dl)))
|
|
return -EFAULT;
|
|
|
|
down_read(&osdc->lock);
|
|
ceph_calc_file_object_mapping(&ci->i_layout, dl.file_offset, 1,
|
|
&dl.object_no, &dl.object_offset, &xlen);
|
|
dl.file_offset -= dl.object_offset;
|
|
dl.object_size = ci->i_layout.object_size;
|
|
dl.block_size = ci->i_layout.stripe_unit;
|
|
|
|
/* block_offset = object_offset % block_size */
|
|
tmp = dl.object_offset;
|
|
dl.block_offset = do_div(tmp, dl.block_size);
|
|
|
|
snprintf(dl.object_name, sizeof(dl.object_name), "%llx.%08llx",
|
|
ceph_ino(inode), dl.object_no);
|
|
|
|
oloc.pool = ci->i_layout.pool_id;
|
|
oloc.pool_ns = ceph_try_get_string(ci->i_layout.pool_ns);
|
|
ceph_oid_printf(&oid, "%s", dl.object_name);
|
|
|
|
r = ceph_object_locator_to_pg(osdc->osdmap, &oid, &oloc, &pgid);
|
|
|
|
ceph_oloc_destroy(&oloc);
|
|
if (r < 0) {
|
|
up_read(&osdc->lock);
|
|
return r;
|
|
}
|
|
|
|
dl.osd = ceph_pg_to_acting_primary(osdc->osdmap, &pgid);
|
|
if (dl.osd >= 0) {
|
|
struct ceph_entity_addr *a =
|
|
ceph_osd_addr(osdc->osdmap, dl.osd);
|
|
if (a)
|
|
memcpy(&dl.osd_addr, &a->in_addr, sizeof(dl.osd_addr));
|
|
} else {
|
|
memset(&dl.osd_addr, 0, sizeof(dl.osd_addr));
|
|
}
|
|
up_read(&osdc->lock);
|
|
|
|
/* send result back to user */
|
|
if (copy_to_user(arg, &dl, sizeof(dl)))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static long ceph_ioctl_lazyio(struct file *file)
|
|
{
|
|
struct ceph_file_info *fi = file->private_data;
|
|
struct inode *inode = file_inode(file);
|
|
struct ceph_inode_info *ci = ceph_inode(inode);
|
|
|
|
if ((fi->fmode & CEPH_FILE_MODE_LAZY) == 0) {
|
|
spin_lock(&ci->i_ceph_lock);
|
|
fi->fmode |= CEPH_FILE_MODE_LAZY;
|
|
ci->i_nr_by_mode[ffs(CEPH_FILE_MODE_LAZY)]++;
|
|
spin_unlock(&ci->i_ceph_lock);
|
|
dout("ioctl_layzio: file %p marked lazy\n", file);
|
|
|
|
ceph_check_caps(ci, 0, NULL);
|
|
} else {
|
|
dout("ioctl_layzio: file %p already lazy\n", file);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static long ceph_ioctl_syncio(struct file *file)
|
|
{
|
|
struct ceph_file_info *fi = file->private_data;
|
|
|
|
fi->flags |= CEPH_F_SYNC;
|
|
return 0;
|
|
}
|
|
|
|
long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
|
{
|
|
dout("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);
|
|
|
|
case CEPH_IOC_SET_LAYOUT_POLICY:
|
|
return ceph_ioctl_set_layout_policy(file, (void __user *)arg);
|
|
|
|
case CEPH_IOC_GET_DATALOC:
|
|
return ceph_ioctl_get_dataloc(file, (void __user *)arg);
|
|
|
|
case CEPH_IOC_LAZYIO:
|
|
return ceph_ioctl_lazyio(file);
|
|
|
|
case CEPH_IOC_SYNCIO:
|
|
return ceph_ioctl_syncio(file);
|
|
}
|
|
|
|
return -ENOTTY;
|
|
}
|