mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-09-04 23:47:46 -04:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
295
fs/ceph/ioctl.c
Normal file
295
fs/ceph/ioctl.c
Normal file
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#include <linux/ceph/ceph_debug.h>
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#include <linux/in.h>
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#include "super.h"
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#include "mds_client.h"
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#include "ioctl.h"
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/*
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* ioctls
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*/
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/*
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* get and set the file layout
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*/
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static long ceph_ioctl_get_layout(struct file *file, void __user *arg)
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{
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struct ceph_inode_info *ci = ceph_inode(file_inode(file));
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struct ceph_ioctl_layout l;
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int err;
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err = ceph_do_getattr(file_inode(file), CEPH_STAT_CAP_LAYOUT, false);
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if (!err) {
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l.stripe_unit = ceph_file_layout_su(ci->i_layout);
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l.stripe_count = ceph_file_layout_stripe_count(ci->i_layout);
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l.object_size = ceph_file_layout_object_size(ci->i_layout);
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l.data_pool = le32_to_cpu(ci->i_layout.fl_pg_pool);
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l.preferred_osd = (s32)-1;
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if (copy_to_user(arg, &l, sizeof(l)))
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return -EFAULT;
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}
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return err;
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}
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static long __validate_layout(struct ceph_mds_client *mdsc,
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struct ceph_ioctl_layout *l)
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{
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int i, err;
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/* validate striping parameters */
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if ((l->object_size & ~PAGE_MASK) ||
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(l->stripe_unit & ~PAGE_MASK) ||
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((unsigned)l->stripe_unit != 0 &&
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((unsigned)l->object_size % (unsigned)l->stripe_unit)))
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return -EINVAL;
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/* make sure it's a valid data pool */
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mutex_lock(&mdsc->mutex);
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err = -EINVAL;
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for (i = 0; i < mdsc->mdsmap->m_num_data_pg_pools; i++)
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if (mdsc->mdsmap->m_data_pg_pools[i] == l->data_pool) {
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err = 0;
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break;
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}
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mutex_unlock(&mdsc->mutex);
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if (err)
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return err;
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return 0;
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}
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static long ceph_ioctl_set_layout(struct file *file, void __user *arg)
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{
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struct inode *inode = file_inode(file);
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struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
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struct ceph_mds_request *req;
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struct ceph_ioctl_layout l;
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struct ceph_inode_info *ci = ceph_inode(file_inode(file));
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struct ceph_ioctl_layout nl;
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int err;
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if (copy_from_user(&l, arg, sizeof(l)))
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return -EFAULT;
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/* validate changed params against current layout */
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err = ceph_do_getattr(file_inode(file), CEPH_STAT_CAP_LAYOUT, false);
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if (err)
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return err;
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memset(&nl, 0, sizeof(nl));
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if (l.stripe_count)
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nl.stripe_count = l.stripe_count;
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else
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nl.stripe_count = ceph_file_layout_stripe_count(ci->i_layout);
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if (l.stripe_unit)
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nl.stripe_unit = l.stripe_unit;
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else
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nl.stripe_unit = ceph_file_layout_su(ci->i_layout);
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if (l.object_size)
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nl.object_size = l.object_size;
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else
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nl.object_size = ceph_file_layout_object_size(ci->i_layout);
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if (l.data_pool)
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nl.data_pool = l.data_pool;
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else
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nl.data_pool = ceph_file_layout_pg_pool(ci->i_layout);
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/* this is obsolete, and always -1 */
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nl.preferred_osd = le64_to_cpu(-1);
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err = __validate_layout(mdsc, &nl);
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if (err)
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return err;
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req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETLAYOUT,
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USE_AUTH_MDS);
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if (IS_ERR(req))
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return PTR_ERR(req);
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req->r_inode = inode;
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ihold(inode);
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req->r_num_caps = 1;
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req->r_inode_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL;
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req->r_args.setlayout.layout.fl_stripe_unit =
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cpu_to_le32(l.stripe_unit);
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req->r_args.setlayout.layout.fl_stripe_count =
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cpu_to_le32(l.stripe_count);
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req->r_args.setlayout.layout.fl_object_size =
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cpu_to_le32(l.object_size);
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req->r_args.setlayout.layout.fl_pg_pool = cpu_to_le32(l.data_pool);
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err = ceph_mdsc_do_request(mdsc, NULL, req);
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ceph_mdsc_put_request(req);
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return err;
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}
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/*
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* Set a layout policy on a directory inode. All items in the tree
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* rooted at this inode will inherit this layout on creation,
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* (It doesn't apply retroactively )
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* unless a subdirectory has its own layout policy.
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*/
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static long ceph_ioctl_set_layout_policy (struct file *file, void __user *arg)
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{
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struct inode *inode = file_inode(file);
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struct ceph_mds_request *req;
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struct ceph_ioctl_layout l;
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int err;
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struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
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/* copy and validate */
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if (copy_from_user(&l, arg, sizeof(l)))
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return -EFAULT;
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err = __validate_layout(mdsc, &l);
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if (err)
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return err;
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req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETDIRLAYOUT,
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USE_AUTH_MDS);
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if (IS_ERR(req))
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return PTR_ERR(req);
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req->r_inode = inode;
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ihold(inode);
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req->r_num_caps = 1;
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req->r_args.setlayout.layout.fl_stripe_unit =
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cpu_to_le32(l.stripe_unit);
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req->r_args.setlayout.layout.fl_stripe_count =
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cpu_to_le32(l.stripe_count);
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req->r_args.setlayout.layout.fl_object_size =
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cpu_to_le32(l.object_size);
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req->r_args.setlayout.layout.fl_pg_pool =
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cpu_to_le32(l.data_pool);
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err = ceph_mdsc_do_request(mdsc, inode, req);
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ceph_mdsc_put_request(req);
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return err;
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}
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/*
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* Return object name, size/offset information, and location (OSD
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* number, network address) for a given file offset.
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*/
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static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg)
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{
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struct ceph_ioctl_dataloc dl;
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struct inode *inode = file_inode(file);
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struct ceph_inode_info *ci = ceph_inode(inode);
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struct ceph_osd_client *osdc =
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&ceph_sb_to_client(inode->i_sb)->client->osdc;
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struct ceph_object_locator oloc;
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struct ceph_object_id oid;
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u64 len = 1, olen;
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u64 tmp;
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struct ceph_pg pgid;
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int r;
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/* copy and validate */
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if (copy_from_user(&dl, arg, sizeof(dl)))
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return -EFAULT;
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down_read(&osdc->map_sem);
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r = ceph_calc_file_object_mapping(&ci->i_layout, dl.file_offset, len,
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&dl.object_no, &dl.object_offset,
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&olen);
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if (r < 0) {
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up_read(&osdc->map_sem);
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return -EIO;
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}
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dl.file_offset -= dl.object_offset;
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dl.object_size = ceph_file_layout_object_size(ci->i_layout);
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dl.block_size = ceph_file_layout_su(ci->i_layout);
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/* block_offset = object_offset % block_size */
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tmp = dl.object_offset;
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dl.block_offset = do_div(tmp, dl.block_size);
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snprintf(dl.object_name, sizeof(dl.object_name), "%llx.%08llx",
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ceph_ino(inode), dl.object_no);
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oloc.pool = ceph_file_layout_pg_pool(ci->i_layout);
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ceph_oid_set_name(&oid, dl.object_name);
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r = ceph_oloc_oid_to_pg(osdc->osdmap, &oloc, &oid, &pgid);
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if (r < 0) {
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up_read(&osdc->map_sem);
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return r;
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}
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dl.osd = ceph_calc_pg_primary(osdc->osdmap, pgid);
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if (dl.osd >= 0) {
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struct ceph_entity_addr *a =
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ceph_osd_addr(osdc->osdmap, dl.osd);
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if (a)
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memcpy(&dl.osd_addr, &a->in_addr, sizeof(dl.osd_addr));
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} else {
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memset(&dl.osd_addr, 0, sizeof(dl.osd_addr));
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}
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up_read(&osdc->map_sem);
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/* send result back to user */
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if (copy_to_user(arg, &dl, sizeof(dl)))
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return -EFAULT;
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return 0;
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}
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static long ceph_ioctl_lazyio(struct file *file)
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{
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struct ceph_file_info *fi = file->private_data;
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struct inode *inode = file_inode(file);
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struct ceph_inode_info *ci = ceph_inode(inode);
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if ((fi->fmode & CEPH_FILE_MODE_LAZY) == 0) {
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spin_lock(&ci->i_ceph_lock);
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ci->i_nr_by_mode[fi->fmode]--;
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fi->fmode |= CEPH_FILE_MODE_LAZY;
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ci->i_nr_by_mode[fi->fmode]++;
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spin_unlock(&ci->i_ceph_lock);
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dout("ioctl_layzio: file %p marked lazy\n", file);
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ceph_check_caps(ci, 0, NULL);
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} else {
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dout("ioctl_layzio: file %p already lazy\n", file);
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}
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return 0;
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}
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static long ceph_ioctl_syncio(struct file *file)
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{
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struct ceph_file_info *fi = file->private_data;
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fi->flags |= CEPH_F_SYNC;
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return 0;
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}
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long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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{
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dout("ioctl file %p cmd %u arg %lu\n", file, cmd, arg);
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switch (cmd) {
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case CEPH_IOC_GET_LAYOUT:
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return ceph_ioctl_get_layout(file, (void __user *)arg);
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case CEPH_IOC_SET_LAYOUT:
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return ceph_ioctl_set_layout(file, (void __user *)arg);
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case CEPH_IOC_SET_LAYOUT_POLICY:
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return ceph_ioctl_set_layout_policy(file, (void __user *)arg);
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case CEPH_IOC_GET_DATALOC:
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return ceph_ioctl_get_dataloc(file, (void __user *)arg);
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case CEPH_IOC_LAZYIO:
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return ceph_ioctl_lazyio(file);
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case CEPH_IOC_SYNCIO:
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return ceph_ioctl_syncio(file);
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}
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return -ENOTTY;
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}
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