file.c (47237687d73cbeae1dd7a133c3fc3d7239094568) file.c (d95852777bc8ba6b3ad3397d495c5f9dd8ca8383)
1#include <linux/ceph/ceph_debug.h>
2
3#include <linux/module.h>
4#include <linux/sched.h>
5#include <linux/slab.h>
6#include <linux/file.h>
7#include <linux/namei.h>
8#include <linux/writeback.h>

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208
209/*
210 * Do a lookup + open with a single request.
211 *
212 * If this succeeds, but some subsequent check in the vfs
213 * may_open() fails, the struct *file gets cleaned up (i.e.
214 * ceph_release gets called). So fear not!
215 */
1#include <linux/ceph/ceph_debug.h>
2
3#include <linux/module.h>
4#include <linux/sched.h>
5#include <linux/slab.h>
6#include <linux/file.h>
7#include <linux/namei.h>
8#include <linux/writeback.h>

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208
209/*
210 * Do a lookup + open with a single request.
211 *
212 * If this succeeds, but some subsequent check in the vfs
213 * may_open() fails, the struct *file gets cleaned up (i.e.
214 * ceph_release gets called). So fear not!
215 */
216struct file *ceph_lookup_open(struct inode *dir, struct dentry *dentry,
217 struct opendata *od, unsigned flags, umode_t mode,
218 int *opened)
216int ceph_lookup_open(struct inode *dir, struct dentry *dentry,
217 struct opendata *od, unsigned flags, umode_t mode,
218 int *opened)
219{
220 struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
221 struct ceph_mds_client *mdsc = fsc->mdsc;
222 struct file *file = NULL;
223 struct ceph_mds_request *req;
224 struct dentry *ret;
225 int err;
226
227 dout("ceph_lookup_open dentry %p '%.*s' flags %d mode 0%o\n",
228 dentry, dentry->d_name.len, dentry->d_name.name, flags, mode);
229
230 /* do the open */
231 req = prepare_open_request(dir->i_sb, flags, mode);
232 if (IS_ERR(req))
219{
220 struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
221 struct ceph_mds_client *mdsc = fsc->mdsc;
222 struct file *file = NULL;
223 struct ceph_mds_request *req;
224 struct dentry *ret;
225 int err;
226
227 dout("ceph_lookup_open dentry %p '%.*s' flags %d mode 0%o\n",
228 dentry, dentry->d_name.len, dentry->d_name.name, flags, mode);
229
230 /* do the open */
231 req = prepare_open_request(dir->i_sb, flags, mode);
232 if (IS_ERR(req))
233 return ERR_CAST(req);
233 return PTR_ERR(req);
234 req->r_dentry = dget(dentry);
235 req->r_num_caps = 2;
236 if (flags & O_CREAT) {
237 req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
238 req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
239 }
240 req->r_locked_dir = dir; /* caller holds dir->i_mutex */
241 err = ceph_mdsc_do_request(mdsc,

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252 if (IS_ERR(file))
253 err = PTR_ERR(file);
254out:
255 ret = ceph_finish_lookup(req, dentry, err);
256 ceph_mdsc_put_request(req);
257 dout("ceph_lookup_open result=%p\n", ret);
258
259 if (IS_ERR(ret))
234 req->r_dentry = dget(dentry);
235 req->r_num_caps = 2;
236 if (flags & O_CREAT) {
237 req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
238 req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
239 }
240 req->r_locked_dir = dir; /* caller holds dir->i_mutex */
241 err = ceph_mdsc_do_request(mdsc,

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252 if (IS_ERR(file))
253 err = PTR_ERR(file);
254out:
255 ret = ceph_finish_lookup(req, dentry, err);
256 ceph_mdsc_put_request(req);
257 dout("ceph_lookup_open result=%p\n", ret);
258
259 if (IS_ERR(ret))
260 return ERR_CAST(ret);
260 return PTR_ERR(ret);
261
262 dput(ret);
261
262 dput(ret);
263 return err ? ERR_PTR(err) : file;
263 return err;
264}
265
266int ceph_release(struct inode *inode, struct file *file)
267{
268 struct ceph_inode_info *ci = ceph_inode(inode);
269 struct ceph_file_info *cf = file->private_data;
270
271 dout("release inode %p file %p\n", inode, file);

--- 601 unchanged lines hidden --- 		264}
265
266int ceph_release(struct inode *inode, struct file *file)
267{
268 struct ceph_inode_info *ci = ceph_inode(inode);
269 struct ceph_file_info *cf = file->private_data;
270
271 dout("release inode %p file %p\n", inode, file);

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