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Diffstat (limited to 'fs/ceph/dir.c')
-rw-r--r--fs/ceph/dir.c602
1 files changed, 399 insertions, 203 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 6c7026cc8988..86d7aa594ea9 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -9,6 +9,7 @@
#include "super.h"
#include "mds_client.h"
+#include "crypto.h"
/*
* Directory operations: readdir, lookup, create, link, unlink,
@@ -108,7 +109,9 @@ static int fpos_cmp(loff_t l, loff_t r)
* regardless of what dir changes take place on the
* server.
*/
-static int note_last_dentry(struct ceph_dir_file_info *dfi, const char *name,
+static int note_last_dentry(struct ceph_fs_client *fsc,
+ struct ceph_dir_file_info *dfi,
+ const char *name,
int len, unsigned next_offset)
{
char *buf = kmalloc(len+1, GFP_KERNEL);
@@ -119,7 +122,7 @@ static int note_last_dentry(struct ceph_dir_file_info *dfi, const char *name,
memcpy(dfi->last_name, name, len);
dfi->last_name[len] = 0;
dfi->next_offset = next_offset;
- dout("note_last_dentry '%s'\n", dfi->last_name);
+ doutc(fsc->client, "'%s'\n", dfi->last_name);
return 0;
}
@@ -129,6 +132,7 @@ __dcache_find_get_entry(struct dentry *parent, u64 idx,
struct ceph_readdir_cache_control *cache_ctl)
{
struct inode *dir = d_inode(parent);
+ struct ceph_client *cl = ceph_inode_to_client(dir);
struct dentry *dentry;
unsigned idx_mask = (PAGE_SIZE / sizeof(struct dentry *)) - 1;
loff_t ptr_pos = idx * sizeof(struct dentry *);
@@ -137,17 +141,18 @@ __dcache_find_get_entry(struct dentry *parent, u64 idx,
if (ptr_pos >= i_size_read(dir))
return NULL;
- if (!cache_ctl->page || ptr_pgoff != page_index(cache_ctl->page)) {
+ if (!cache_ctl->folio || ptr_pgoff != cache_ctl->folio->index) {
ceph_readdir_cache_release(cache_ctl);
- cache_ctl->page = find_lock_page(&dir->i_data, ptr_pgoff);
- if (!cache_ctl->page) {
- dout(" page %lu not found\n", ptr_pgoff);
+ cache_ctl->folio = filemap_lock_folio(&dir->i_data, ptr_pgoff);
+ if (IS_ERR(cache_ctl->folio)) {
+ cache_ctl->folio = NULL;
+ doutc(cl, " folio %lu not found\n", ptr_pgoff);
return ERR_PTR(-EAGAIN);
}
/* reading/filling the cache are serialized by
- i_rwsem, no need to use page lock */
- unlock_page(cache_ctl->page);
- cache_ctl->dentries = kmap(cache_ctl->page);
+ i_rwsem, no need to use folio lock */
+ folio_unlock(cache_ctl->folio);
+ cache_ctl->dentries = kmap_local_folio(cache_ctl->folio, 0);
}
cache_ctl->index = idx & idx_mask;
@@ -170,7 +175,7 @@ __dcache_find_get_entry(struct dentry *parent, u64 idx,
/*
* When possible, we try to satisfy a readdir by peeking at the
* dcache. We make this work by carefully ordering dentries on
- * d_child when we initially get results back from the MDS, and
+ * d_children when we initially get results back from the MDS, and
* falling back to a "normal" sync readdir if any dentries in the dir
* are dropped.
*
@@ -184,13 +189,16 @@ static int __dcache_readdir(struct file *file, struct dir_context *ctx,
struct ceph_dir_file_info *dfi = file->private_data;
struct dentry *parent = file->f_path.dentry;
struct inode *dir = d_inode(parent);
+ struct ceph_fs_client *fsc = ceph_inode_to_fs_client(dir);
+ struct ceph_client *cl = ceph_inode_to_client(dir);
struct dentry *dentry, *last = NULL;
struct ceph_dentry_info *di;
struct ceph_readdir_cache_control cache_ctl = {};
u64 idx = 0;
int err = 0;
- dout("__dcache_readdir %p v%u at %llx\n", dir, (unsigned)shared_gen, ctx->pos);
+ doutc(cl, "%p %llx.%llx v%u at %llx\n", dir, ceph_vinop(dir),
+ (unsigned)shared_gen, ctx->pos);
/* search start position */
if (ctx->pos > 2) {
@@ -200,7 +208,7 @@ static int __dcache_readdir(struct file *file, struct dir_context *ctx,
dentry = __dcache_find_get_entry(parent, idx + step,
&cache_ctl);
if (!dentry) {
- /* use linar search */
+ /* use linear search */
idx = 0;
break;
}
@@ -220,7 +228,8 @@ static int __dcache_readdir(struct file *file, struct dir_context *ctx,
dput(dentry);
}
- dout("__dcache_readdir %p cache idx %llu\n", dir, idx);
+ doutc(cl, "%p %llx.%llx cache idx %llu\n", dir,
+ ceph_vinop(dir), idx);
}
@@ -241,7 +250,9 @@ static int __dcache_readdir(struct file *file, struct dir_context *ctx,
di = ceph_dentry(dentry);
if (d_unhashed(dentry) ||
d_really_is_negative(dentry) ||
- di->lease_shared_gen != shared_gen) {
+ di->lease_shared_gen != shared_gen ||
+ ((dentry->d_flags & DCACHE_NOKEY_NAME) &&
+ fscrypt_has_encryption_key(dir))) {
spin_unlock(&dentry->d_lock);
dput(dentry);
err = -EAGAIN;
@@ -254,8 +265,8 @@ static int __dcache_readdir(struct file *file, struct dir_context *ctx,
spin_unlock(&dentry->d_lock);
if (emit_dentry) {
- dout(" %llx dentry %p %pd %p\n", di->offset,
- dentry, dentry, d_inode(dentry));
+ doutc(cl, " %llx dentry %p %pd %p\n", di->offset,
+ dentry, dentry, d_inode(dentry));
ctx->pos = di->offset;
if (!dir_emit(ctx, dentry->d_name.name,
dentry->d_name.len, ceph_present_inode(d_inode(dentry)),
@@ -278,7 +289,8 @@ out:
if (last) {
int ret;
di = ceph_dentry(last);
- ret = note_last_dentry(dfi, last->d_name.name, last->d_name.len,
+ ret = note_last_dentry(fsc, dfi, last->d_name.name,
+ last->d_name.len,
fpos_off(di->offset) + 1);
if (ret < 0)
err = ret;
@@ -307,20 +319,23 @@ static int ceph_readdir(struct file *file, struct dir_context *ctx)
struct ceph_dir_file_info *dfi = file->private_data;
struct inode *inode = file_inode(file);
struct ceph_inode_info *ci = ceph_inode(inode);
- struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
+ struct ceph_fs_client *fsc = ceph_inode_to_fs_client(inode);
struct ceph_mds_client *mdsc = fsc->mdsc;
+ struct ceph_client *cl = fsc->client;
int i;
int err;
unsigned frag = -1;
struct ceph_mds_reply_info_parsed *rinfo;
- dout("readdir %p file %p pos %llx\n", inode, file, ctx->pos);
+ doutc(cl, "%p %llx.%llx file %p pos %llx\n", inode,
+ ceph_vinop(inode), file, ctx->pos);
if (dfi->file_info.flags & CEPH_F_ATEND)
return 0;
/* always start with . and .. */
if (ctx->pos == 0) {
- dout("readdir off 0 -> '.'\n");
+ doutc(cl, "%p %llx.%llx off 0 -> '.'\n", inode,
+ ceph_vinop(inode));
if (!dir_emit(ctx, ".", 1, ceph_present_inode(inode),
inode->i_mode >> 12))
return 0;
@@ -334,12 +349,17 @@ static int ceph_readdir(struct file *file, struct dir_context *ctx)
ino = ceph_present_inode(dentry->d_parent->d_inode);
spin_unlock(&dentry->d_lock);
- dout("readdir off 1 -> '..'\n");
+ doutc(cl, "%p %llx.%llx off 1 -> '..'\n", inode,
+ ceph_vinop(inode));
if (!dir_emit(ctx, "..", 2, ino, inode->i_mode >> 12))
return 0;
ctx->pos = 2;
}
+ err = ceph_fscrypt_prepare_readdir(inode);
+ if (err < 0)
+ return err;
+
spin_lock(&ci->i_ceph_lock);
/* request Fx cap. if have Fx, we don't need to release Fs cap
* for later create/unlink. */
@@ -384,11 +404,12 @@ more:
frag = fpos_frag(ctx->pos);
}
- dout("readdir fetching %llx.%llx frag %x offset '%s'\n",
- ceph_vinop(inode), frag, dfi->last_name);
+ doutc(cl, "fetching %p %llx.%llx frag %x offset '%s'\n",
+ inode, ceph_vinop(inode), frag, dfi->last_name);
req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS);
if (IS_ERR(req))
return PTR_ERR(req);
+
err = ceph_alloc_readdir_reply_buffer(req, inode);
if (err) {
ceph_mdsc_put_request(req);
@@ -402,11 +423,20 @@ more:
req->r_inode_drop = CEPH_CAP_FILE_EXCL;
}
if (dfi->last_name) {
- req->r_path2 = kstrdup(dfi->last_name, GFP_KERNEL);
+ int len = strlen(dfi->last_name);
+
+ req->r_path2 = kzalloc(NAME_MAX + 1, GFP_KERNEL);
if (!req->r_path2) {
ceph_mdsc_put_request(req);
return -ENOMEM;
}
+ memcpy(req->r_path2, dfi->last_name, len);
+
+ err = ceph_encode_encrypted_dname(inode, req->r_path2, len);
+ if (err < 0) {
+ ceph_mdsc_put_request(req);
+ return err;
+ }
} else if (is_hash_order(ctx->pos)) {
req->r_args.readdir.offset_hash =
cpu_to_le32(fpos_hash(ctx->pos));
@@ -428,12 +458,12 @@ more:
ceph_mdsc_put_request(req);
return err;
}
- dout("readdir got and parsed readdir result=%d on "
- "frag %x, end=%d, complete=%d, hash_order=%d\n",
- err, frag,
- (int)req->r_reply_info.dir_end,
- (int)req->r_reply_info.dir_complete,
- (int)req->r_reply_info.hash_order);
+ doutc(cl, "%p %llx.%llx got and parsed readdir result=%d"
+ "on frag %x, end=%d, complete=%d, hash_order=%d\n",
+ inode, ceph_vinop(inode), err, frag,
+ (int)req->r_reply_info.dir_end,
+ (int)req->r_reply_info.dir_complete,
+ (int)req->r_reply_info.hash_order);
rinfo = &req->r_reply_info;
if (le32_to_cpu(rinfo->dir_dir->frag) != frag) {
@@ -463,7 +493,8 @@ more:
dfi->dir_ordered_count = req->r_dir_ordered_cnt;
}
} else {
- dout("readdir !did_prepopulate\n");
+ doutc(cl, "%p %llx.%llx !did_prepopulate\n", inode,
+ ceph_vinop(inode));
/* disable readdir cache */
dfi->readdir_cache_idx = -1;
/* preclude from marking dir complete */
@@ -476,8 +507,8 @@ more:
rinfo->dir_entries + (rinfo->dir_nr-1);
unsigned next_offset = req->r_reply_info.dir_end ?
2 : (fpos_off(rde->offset) + 1);
- err = note_last_dentry(dfi, rde->name, rde->name_len,
- next_offset);
+ err = note_last_dentry(fsc, dfi, rde->name,
+ rde->name_len, next_offset);
if (err) {
ceph_mdsc_put_request(dfi->last_readdir);
dfi->last_readdir = NULL;
@@ -490,9 +521,9 @@ more:
}
rinfo = &dfi->last_readdir->r_reply_info;
- dout("readdir frag %x num %d pos %llx chunk first %llx\n",
- dfi->frag, rinfo->dir_nr, ctx->pos,
- rinfo->dir_nr ? rinfo->dir_entries[0].offset : 0LL);
+ doutc(cl, "%p %llx.%llx frag %x num %d pos %llx chunk first %llx\n",
+ inode, ceph_vinop(inode), dfi->frag, rinfo->dir_nr, ctx->pos,
+ rinfo->dir_nr ? rinfo->dir_entries[0].offset : 0LL);
i = 0;
/* search start position */
@@ -511,14 +542,20 @@ more:
for (; i < rinfo->dir_nr; i++) {
struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i;
- BUG_ON(rde->offset < ctx->pos);
+ if (rde->offset < ctx->pos) {
+ pr_warn_client(cl,
+ "%p %llx.%llx rde->offset 0x%llx ctx->pos 0x%llx\n",
+ inode, ceph_vinop(inode), rde->offset, ctx->pos);
+ return -EIO;
+ }
+
+ if (WARN_ON_ONCE(!rde->inode.in))
+ return -EIO;
ctx->pos = rde->offset;
- dout("readdir (%d/%d) -> %llx '%.*s' %p\n",
- i, rinfo->dir_nr, ctx->pos,
- rde->name_len, rde->name, &rde->inode.in);
-
- BUG_ON(!rde->inode.in);
+ doutc(cl, "%p %llx.%llx (%d/%d) -> %llx '%.*s' %p\n", inode,
+ ceph_vinop(inode), i, rinfo->dir_nr, ctx->pos,
+ rde->name_len, rde->name, &rde->inode.in);
if (!dir_emit(ctx, rde->name, rde->name_len,
ceph_present_ino(inode->i_sb, le64_to_cpu(rde->inode.in->ino)),
@@ -529,9 +566,11 @@ more:
* doesn't have enough memory, etc. So for next readdir
* it will continue.
*/
- dout("filldir stopping us...\n");
+ doutc(cl, "filldir stopping us...\n");
return 0;
}
+
+ /* Reset the lengths to their original allocated vals */
ctx->pos++;
}
@@ -558,7 +597,8 @@ more:
kfree(dfi->last_name);
dfi->last_name = NULL;
}
- dout("readdir next frag is %x\n", frag);
+ doutc(cl, "%p %llx.%llx next frag is %x\n", inode,
+ ceph_vinop(inode), frag);
goto more;
}
dfi->file_info.flags |= CEPH_F_ATEND;
@@ -573,21 +613,23 @@ more:
spin_lock(&ci->i_ceph_lock);
if (dfi->dir_ordered_count ==
atomic64_read(&ci->i_ordered_count)) {
- dout(" marking %p complete and ordered\n", inode);
+ doutc(cl, " marking %p %llx.%llx complete and ordered\n",
+ inode, ceph_vinop(inode));
/* use i_size to track number of entries in
* readdir cache */
BUG_ON(dfi->readdir_cache_idx < 0);
i_size_write(inode, dfi->readdir_cache_idx *
sizeof(struct dentry*));
} else {
- dout(" marking %p complete\n", inode);
+ doutc(cl, " marking %llx.%llx complete\n",
+ ceph_vinop(inode));
}
__ceph_dir_set_complete(ci, dfi->dir_release_count,
dfi->dir_ordered_count);
spin_unlock(&ci->i_ceph_lock);
}
-
- dout("readdir %p file %p done.\n", inode, file);
+ doutc(cl, "%p %llx.%llx file %p done.\n", inode, ceph_vinop(inode),
+ file);
return 0;
}
@@ -617,7 +659,7 @@ static bool need_reset_readdir(struct ceph_dir_file_info *dfi, loff_t new_pos)
return true;
if (is_hash_order(new_pos)) {
/* no need to reset last_name for a forward seek when
- * dentries are sotred in hash order */
+ * dentries are sorted in hash order */
} else if (dfi->frag != fpos_frag(new_pos)) {
return true;
}
@@ -633,6 +675,7 @@ static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int whence)
{
struct ceph_dir_file_info *dfi = file->private_data;
struct inode *inode = file->f_mapping->host;
+ struct ceph_client *cl = ceph_inode_to_client(inode);
loff_t retval;
inode_lock(inode);
@@ -652,7 +695,8 @@ static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int whence)
if (offset >= 0) {
if (need_reset_readdir(dfi, offset)) {
- dout("dir_llseek dropping %p content\n", file);
+ doutc(cl, "%p %llx.%llx dropping %p content\n",
+ inode, ceph_vinop(inode), file);
reset_readdir(dfi);
} else if (is_hash_order(offset) && offset > file->f_pos) {
/* for hash offset, we don't know if a forward seek
@@ -663,7 +707,6 @@ static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int whence)
if (offset != file->f_pos) {
file->f_pos = offset;
- file->f_version = 0;
dfi->file_info.flags &= ~CEPH_F_ATEND;
}
retval = offset;
@@ -679,8 +722,9 @@ out:
struct dentry *ceph_handle_snapdir(struct ceph_mds_request *req,
struct dentry *dentry)
{
- struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb);
+ struct ceph_fs_client *fsc = ceph_sb_to_fs_client(dentry->d_sb);
struct inode *parent = d_inode(dentry->d_parent); /* we hold i_rwsem */
+ struct ceph_client *cl = ceph_inode_to_client(parent);
/* .snap dir? */
if (ceph_snap(parent) == CEPH_NOSNAP &&
@@ -689,8 +733,9 @@ struct dentry *ceph_handle_snapdir(struct ceph_mds_request *req,
struct inode *inode = ceph_get_snapdir(parent);
res = d_splice_alias(inode, dentry);
- dout("ENOENT on snapdir %p '%pd', linking to snapdir %p. Spliced dentry %p\n",
- dentry, dentry, inode, res);
+ doutc(cl, "ENOENT on snapdir %p '%pd', linking to "
+ "snapdir %p %llx.%llx. Spliced dentry %p\n",
+ dentry, dentry, inode, ceph_vinop(inode), res);
if (res)
dentry = res;
}
@@ -711,12 +756,15 @@ struct dentry *ceph_handle_snapdir(struct ceph_mds_request *req,
struct dentry *ceph_finish_lookup(struct ceph_mds_request *req,
struct dentry *dentry, int err)
{
+ struct ceph_client *cl = req->r_mdsc->fsc->client;
+
if (err == -ENOENT) {
/* no trace? */
err = 0;
if (!req->r_reply_info.head->is_dentry) {
- dout("ENOENT and no trace, dentry %p inode %p\n",
- dentry, d_inode(dentry));
+ doutc(cl,
+ "ENOENT and no trace, dentry %p inode %llx.%llx\n",
+ dentry, ceph_vinop(d_inode(dentry)));
if (d_really_is_positive(dentry)) {
d_drop(dentry);
err = -ENOENT;
@@ -747,26 +795,40 @@ static bool is_root_ceph_dentry(struct inode *inode, struct dentry *dentry)
static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
unsigned int flags)
{
- struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
+ struct ceph_fs_client *fsc = ceph_sb_to_fs_client(dir->i_sb);
struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(dir->i_sb);
+ struct ceph_client *cl = fsc->client;
struct ceph_mds_request *req;
int op;
int mask;
int err;
- dout("lookup %p dentry %p '%pd'\n",
- dir, dentry, dentry);
+ doutc(cl, "%p %llx.%llx/'%pd' dentry %p\n", dir, ceph_vinop(dir),
+ dentry, dentry);
if (dentry->d_name.len > NAME_MAX)
return ERR_PTR(-ENAMETOOLONG);
+ if (IS_ENCRYPTED(dir)) {
+ bool had_key = fscrypt_has_encryption_key(dir);
+
+ err = fscrypt_prepare_lookup_partial(dir, dentry);
+ if (err < 0)
+ return ERR_PTR(err);
+
+ /* mark directory as incomplete if it has been unlocked */
+ if (!had_key && fscrypt_has_encryption_key(dir))
+ ceph_dir_clear_complete(dir);
+ }
+
/* can we conclude ENOENT locally? */
if (d_really_is_negative(dentry)) {
struct ceph_inode_info *ci = ceph_inode(dir);
struct ceph_dentry_info *di = ceph_dentry(dentry);
spin_lock(&ci->i_ceph_lock);
- dout(" dir %p flags are 0x%lx\n", dir, ci->i_ceph_flags);
+ doutc(cl, " dir %llx.%llx flags are 0x%lx\n",
+ ceph_vinop(dir), ci->i_ceph_flags);
if (strncmp(dentry->d_name.name,
fsc->mount_options->snapdir_name,
dentry->d_name.len) &&
@@ -776,7 +838,8 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
__ceph_caps_issued_mask_metric(ci, CEPH_CAP_FILE_SHARED, 1)) {
__ceph_touch_fmode(ci, mdsc, CEPH_FILE_MODE_RD);
spin_unlock(&ci->i_ceph_lock);
- dout(" dir %p complete, -ENOENT\n", dir);
+ doutc(cl, " dir %llx.%llx complete, -ENOENT\n",
+ ceph_vinop(dir));
d_add(dentry, NULL);
di->lease_shared_gen = atomic_read(&ci->i_shared_gen);
return NULL;
@@ -814,7 +877,7 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
}
dentry = ceph_finish_lookup(req, dentry, err);
ceph_mdsc_put_request(req); /* will dput(dentry) */
- dout("lookup result=%p\n", dentry);
+ doutc(cl, "result=%p\n", dentry);
return dentry;
}
@@ -845,10 +908,11 @@ int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry)
return PTR_ERR(result);
}
-static int ceph_mknod(struct user_namespace *mnt_userns, struct inode *dir,
+static int ceph_mknod(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, umode_t mode, dev_t rdev)
{
struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(dir->i_sb);
+ struct ceph_client *cl = mdsc->fsc->client;
struct ceph_mds_request *req;
struct ceph_acl_sec_ctx as_ctx = {};
int err;
@@ -865,36 +929,42 @@ static int ceph_mknod(struct user_namespace *mnt_userns, struct inode *dir,
goto out;
}
- err = ceph_pre_init_acls(dir, &mode, &as_ctx);
- if (err < 0)
- goto out;
- err = ceph_security_init_secctx(dentry, mode, &as_ctx);
- if (err < 0)
- goto out;
-
- dout("mknod in dir %p dentry %p mode 0%ho rdev %d\n",
- dir, dentry, mode, rdev);
+ doutc(cl, "%p %llx.%llx/'%pd' dentry %p mode 0%ho rdev %d\n",
+ dir, ceph_vinop(dir), dentry, dentry, mode, rdev);
req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_MKNOD, USE_AUTH_MDS);
if (IS_ERR(req)) {
err = PTR_ERR(req);
goto out;
}
+
+ req->r_new_inode = ceph_new_inode(dir, dentry, &mode, &as_ctx);
+ if (IS_ERR(req->r_new_inode)) {
+ err = PTR_ERR(req->r_new_inode);
+ req->r_new_inode = NULL;
+ goto out_req;
+ }
+
+ if (S_ISREG(mode) && IS_ENCRYPTED(dir))
+ set_bit(CEPH_MDS_R_FSCRYPT_FILE, &req->r_req_flags);
+
req->r_dentry = dget(dentry);
req->r_num_caps = 2;
req->r_parent = dir;
ihold(dir);
set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags);
+ req->r_mnt_idmap = mnt_idmap_get(idmap);
req->r_args.mknod.mode = cpu_to_le32(mode);
req->r_args.mknod.rdev = cpu_to_le32(rdev);
- req->r_dentry_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_AUTH_EXCL;
+ req->r_dentry_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_AUTH_EXCL |
+ CEPH_CAP_XATTR_EXCL;
req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
- if (as_ctx.pagelist) {
- req->r_pagelist = as_ctx.pagelist;
- as_ctx.pagelist = NULL;
- }
+
+ ceph_as_ctx_to_req(req, &as_ctx);
+
err = ceph_mdsc_do_request(mdsc, dir, req);
if (!err && !req->r_reply_info.head->is_dentry)
err = ceph_handle_notrace_create(dir, dentry);
+out_req:
ceph_mdsc_put_request(req);
out:
if (!err)
@@ -905,18 +975,58 @@ out:
return err;
}
-static int ceph_create(struct user_namespace *mnt_userns, struct inode *dir,
+static int ceph_create(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, umode_t mode, bool excl)
{
- return ceph_mknod(mnt_userns, dir, dentry, mode, 0);
+ return ceph_mknod(idmap, dir, dentry, mode, 0);
+}
+
+#if IS_ENABLED(CONFIG_FS_ENCRYPTION)
+static int prep_encrypted_symlink_target(struct ceph_mds_request *req,
+ const char *dest)
+{
+ int err;
+ int len = strlen(dest);
+ struct fscrypt_str osd_link = FSTR_INIT(NULL, 0);
+
+ err = fscrypt_prepare_symlink(req->r_parent, dest, len, PATH_MAX,
+ &osd_link);
+ if (err)
+ goto out;
+
+ err = fscrypt_encrypt_symlink(req->r_new_inode, dest, len, &osd_link);
+ if (err)
+ goto out;
+
+ req->r_path2 = kmalloc(BASE64_CHARS(osd_link.len) + 1, GFP_KERNEL);
+ if (!req->r_path2) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ len = base64_encode(osd_link.name, osd_link.len,
+ req->r_path2, false, BASE64_IMAP);
+ req->r_path2[len] = '\0';
+out:
+ fscrypt_fname_free_buffer(&osd_link);
+ return err;
+}
+#else
+static int prep_encrypted_symlink_target(struct ceph_mds_request *req,
+ const char *dest)
+{
+ return -EOPNOTSUPP;
}
+#endif
-static int ceph_symlink(struct user_namespace *mnt_userns, struct inode *dir,
+static int ceph_symlink(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, const char *dest)
{
struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(dir->i_sb);
+ struct ceph_client *cl = mdsc->fsc->client;
struct ceph_mds_request *req;
struct ceph_acl_sec_ctx as_ctx = {};
+ umode_t mode = S_IFLNK | 0777;
int err;
if (ceph_snap(dir) != CEPH_NOSNAP)
@@ -931,37 +1041,50 @@ static int ceph_symlink(struct user_namespace *mnt_userns, struct inode *dir,
goto out;
}
- err = ceph_security_init_secctx(dentry, S_IFLNK | 0777, &as_ctx);
- if (err < 0)
- goto out;
-
- dout("symlink in dir %p dentry %p to '%s'\n", dir, dentry, dest);
+ doutc(cl, "%p %llx.%llx/'%pd' to '%s'\n", dir, ceph_vinop(dir), dentry,
+ dest);
req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SYMLINK, USE_AUTH_MDS);
if (IS_ERR(req)) {
err = PTR_ERR(req);
goto out;
}
- req->r_path2 = kstrdup(dest, GFP_KERNEL);
- if (!req->r_path2) {
- err = -ENOMEM;
- ceph_mdsc_put_request(req);
- goto out;
+
+ req->r_new_inode = ceph_new_inode(dir, dentry, &mode, &as_ctx);
+ if (IS_ERR(req->r_new_inode)) {
+ err = PTR_ERR(req->r_new_inode);
+ req->r_new_inode = NULL;
+ goto out_req;
}
+
req->r_parent = dir;
ihold(dir);
+ if (IS_ENCRYPTED(req->r_new_inode)) {
+ err = prep_encrypted_symlink_target(req, dest);
+ if (err)
+ goto out_req;
+ } else {
+ req->r_path2 = kstrdup(dest, GFP_KERNEL);
+ if (!req->r_path2) {
+ err = -ENOMEM;
+ goto out_req;
+ }
+ }
+
set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags);
+ req->r_mnt_idmap = mnt_idmap_get(idmap);
req->r_dentry = dget(dentry);
req->r_num_caps = 2;
- req->r_dentry_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_AUTH_EXCL;
+ req->r_dentry_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_AUTH_EXCL |
+ CEPH_CAP_XATTR_EXCL;
req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
- if (as_ctx.pagelist) {
- req->r_pagelist = as_ctx.pagelist;
- as_ctx.pagelist = NULL;
- }
+
+ ceph_as_ctx_to_req(req, &as_ctx);
+
err = ceph_mdsc_do_request(mdsc, dir, req);
if (!err && !req->r_reply_info.head->is_dentry)
err = ceph_handle_notrace_create(dir, dentry);
+out_req:
ceph_mdsc_put_request(req);
out:
if (err)
@@ -970,86 +1093,109 @@ out:
return err;
}
-static int ceph_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
- struct dentry *dentry, umode_t mode)
+static struct dentry *ceph_mkdir(struct mnt_idmap *idmap, struct inode *dir,
+ struct dentry *dentry, umode_t mode)
{
struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(dir->i_sb);
+ struct ceph_client *cl = mdsc->fsc->client;
struct ceph_mds_request *req;
struct ceph_acl_sec_ctx as_ctx = {};
+ struct dentry *ret;
int err;
int op;
err = ceph_wait_on_conflict_unlink(dentry);
if (err)
- return err;
+ return ERR_PTR(err);
if (ceph_snap(dir) == CEPH_SNAPDIR) {
/* mkdir .snap/foo is a MKSNAP */
op = CEPH_MDS_OP_MKSNAP;
- dout("mksnap dir %p snap '%pd' dn %p\n", dir,
- dentry, dentry);
+ doutc(cl, "mksnap %llx.%llx/'%pd' dentry %p\n",
+ ceph_vinop(dir), dentry, dentry);
} else if (ceph_snap(dir) == CEPH_NOSNAP) {
- dout("mkdir dir %p dn %p mode 0%ho\n", dir, dentry, mode);
+ doutc(cl, "mkdir %llx.%llx/'%pd' dentry %p mode 0%ho\n",
+ ceph_vinop(dir), dentry, dentry, mode);
op = CEPH_MDS_OP_MKDIR;
} else {
- err = -EROFS;
+ ret = ERR_PTR(-EROFS);
goto out;
}
if (op == CEPH_MDS_OP_MKDIR &&
ceph_quota_is_max_files_exceeded(dir)) {
- err = -EDQUOT;
+ ret = ERR_PTR(-EDQUOT);
goto out;
}
-
- mode |= S_IFDIR;
- err = ceph_pre_init_acls(dir, &mode, &as_ctx);
- if (err < 0)
- goto out;
- err = ceph_security_init_secctx(dentry, mode, &as_ctx);
- if (err < 0)
+ if ((op == CEPH_MDS_OP_MKSNAP) && IS_ENCRYPTED(dir) &&
+ !fscrypt_has_encryption_key(dir)) {
+ ret = ERR_PTR(-ENOKEY);
goto out;
+ }
+
req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS);
if (IS_ERR(req)) {
- err = PTR_ERR(req);
+ ret = ERR_CAST(req);
goto out;
}
+ mode |= S_IFDIR;
+ req->r_new_inode = ceph_new_inode(dir, dentry, &mode, &as_ctx);
+ if (IS_ERR(req->r_new_inode)) {
+ ret = ERR_CAST(req->r_new_inode);
+ req->r_new_inode = NULL;
+ goto out_req;
+ }
+
req->r_dentry = dget(dentry);
req->r_num_caps = 2;
req->r_parent = dir;
ihold(dir);
set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags);
+ if (op == CEPH_MDS_OP_MKDIR)
+ req->r_mnt_idmap = mnt_idmap_get(idmap);
req->r_args.mkdir.mode = cpu_to_le32(mode);
- req->r_dentry_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_AUTH_EXCL;
+ req->r_dentry_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_AUTH_EXCL |
+ CEPH_CAP_XATTR_EXCL;
req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
- if (as_ctx.pagelist) {
- req->r_pagelist = as_ctx.pagelist;
- as_ctx.pagelist = NULL;
- }
+
+ ceph_as_ctx_to_req(req, &as_ctx);
+
err = ceph_mdsc_do_request(mdsc, dir, req);
if (!err &&
!req->r_reply_info.head->is_target &&
!req->r_reply_info.head->is_dentry)
err = ceph_handle_notrace_create(dir, dentry);
+ ret = ERR_PTR(err);
+out_req:
+ if (!IS_ERR(ret) && req->r_dentry != dentry)
+ /* Some other dentry was spliced in */
+ ret = dget(req->r_dentry);
ceph_mdsc_put_request(req);
out:
- if (!err)
+ if (!IS_ERR(ret)) {
+ if (ret)
+ dentry = ret;
ceph_init_inode_acls(d_inode(dentry), &as_ctx);
- else
+ } else {
d_drop(dentry);
+ }
ceph_release_acl_sec_ctx(&as_ctx);
- return err;
+ return ret;
}
static int ceph_link(struct dentry *old_dentry, struct inode *dir,
struct dentry *dentry)
{
struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(dir->i_sb);
+ struct ceph_client *cl = mdsc->fsc->client;
struct ceph_mds_request *req;
int err;
+ if (dentry->d_flags & DCACHE_DISCONNECTED)
+ return -EINVAL;
+
err = ceph_wait_on_conflict_unlink(dentry);
if (err)
return err;
@@ -1057,8 +1203,12 @@ static int ceph_link(struct dentry *old_dentry, struct inode *dir,
if (ceph_snap(dir) != CEPH_NOSNAP)
return -EROFS;
- dout("link in dir %p old_dentry %p dentry %p\n", dir,
- old_dentry, dentry);
+ err = fscrypt_prepare_link(old_dentry, dir, dentry);
+ if (err)
+ return err;
+
+ doutc(cl, "%p %llx.%llx/'%pd' to '%pd'\n", dir, ceph_vinop(dir),
+ old_dentry, dentry);
req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_LINK, USE_AUTH_MDS);
if (IS_ERR(req)) {
d_drop(dentry);
@@ -1067,10 +1217,16 @@ static int ceph_link(struct dentry *old_dentry, struct inode *dir,
req->r_dentry = dget(dentry);
req->r_num_caps = 2;
req->r_old_dentry = dget(old_dentry);
+ /*
+ * The old_dentry maybe a DCACHE_DISCONNECTED dentry, then we
+ * will just pass the ino# to MDSs.
+ */
+ if (old_dentry->d_flags & DCACHE_DISCONNECTED)
+ req->r_ino2 = ceph_vino(d_inode(old_dentry));
req->r_parent = dir;
ihold(dir);
set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags);
- req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
+ req->r_dentry_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_XATTR_EXCL;
req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
/* release LINK_SHARED on source inode (mds will lock it) */
req->r_old_inode_drop = CEPH_CAP_LINK_SHARED | CEPH_CAP_LINK_EXCL;
@@ -1089,22 +1245,23 @@ static void ceph_async_unlink_cb(struct ceph_mds_client *mdsc,
struct ceph_mds_request *req)
{
struct dentry *dentry = req->r_dentry;
- struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb);
+ struct ceph_fs_client *fsc = ceph_sb_to_fs_client(dentry->d_sb);
+ struct ceph_client *cl = fsc->client;
struct ceph_dentry_info *di = ceph_dentry(dentry);
int result = req->r_err ? req->r_err :
le32_to_cpu(req->r_reply_info.head->result);
if (!test_bit(CEPH_DENTRY_ASYNC_UNLINK_BIT, &di->flags))
- pr_warn("%s dentry %p:%pd async unlink bit is not set\n",
- __func__, dentry, dentry);
+ pr_warn_client(cl,
+ "dentry %p:%pd async unlink bit is not set\n",
+ dentry, dentry);
spin_lock(&fsc->async_unlink_conflict_lock);
hash_del_rcu(&di->hnode);
spin_unlock(&fsc->async_unlink_conflict_lock);
spin_lock(&dentry->d_lock);
- di->flags &= ~CEPH_DENTRY_ASYNC_UNLINK;
- wake_up_bit(&di->flags, CEPH_DENTRY_ASYNC_UNLINK_BIT);
+ clear_and_wake_up_bit(CEPH_DENTRY_ASYNC_UNLINK_BIT, &di->flags);
spin_unlock(&dentry->d_lock);
synchronize_rcu();
@@ -1114,10 +1271,8 @@ static void ceph_async_unlink_cb(struct ceph_mds_client *mdsc,
/* If op failed, mark everyone involved for errors */
if (result) {
- int pathlen = 0;
- u64 base = 0;
- char *path = ceph_mdsc_build_path(dentry, &pathlen,
- &base, 0);
+ struct ceph_path_info path_info = {0};
+ char *path = ceph_mdsc_build_path(mdsc, dentry, &path_info, 0);
/* mark error on parent + clear complete */
mapping_set_error(req->r_parent->i_mapping, result);
@@ -1130,9 +1285,9 @@ static void ceph_async_unlink_cb(struct ceph_mds_client *mdsc,
/* mark inode itself for an error (since metadata is bogus) */
mapping_set_error(req->r_old_inode->i_mapping, result);
- pr_warn("async unlink failure path=(%llx)%s result=%d!\n",
- base, IS_ERR(path) ? "<<bad>>" : path, result);
- ceph_mdsc_free_path(path, pathlen);
+ pr_warn_client(cl, "failure path=(%llx)%s result=%d!\n",
+ path_info.vino.ino, IS_ERR(path) ? "<<bad>>" : path, result);
+ ceph_mdsc_free_path_info(&path_info);
}
out:
iput(req->r_old_inode);
@@ -1180,25 +1335,54 @@ static int get_caps_for_async_unlink(struct inode *dir, struct dentry *dentry)
*/
static int ceph_unlink(struct inode *dir, struct dentry *dentry)
{
- struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
+ struct ceph_fs_client *fsc = ceph_sb_to_fs_client(dir->i_sb);
+ struct ceph_client *cl = fsc->client;
struct ceph_mds_client *mdsc = fsc->mdsc;
struct inode *inode = d_inode(dentry);
struct ceph_mds_request *req;
bool try_async = ceph_test_mount_opt(fsc, ASYNC_DIROPS);
+ struct dentry *dn;
int err = -EROFS;
int op;
+ char *path;
if (ceph_snap(dir) == CEPH_SNAPDIR) {
/* rmdir .snap/foo is RMSNAP */
- dout("rmsnap dir %p '%pd' dn %p\n", dir, dentry, dentry);
+ doutc(cl, "rmsnap %llx.%llx/'%pd' dn\n", ceph_vinop(dir),
+ dentry);
op = CEPH_MDS_OP_RMSNAP;
} else if (ceph_snap(dir) == CEPH_NOSNAP) {
- dout("unlink/rmdir dir %p dn %p inode %p\n",
- dir, dentry, inode);
+ doutc(cl, "unlink/rmdir %llx.%llx/'%pd' inode %llx.%llx\n",
+ ceph_vinop(dir), dentry, ceph_vinop(inode));
op = d_is_dir(dentry) ?
CEPH_MDS_OP_RMDIR : CEPH_MDS_OP_UNLINK;
} else
goto out;
+
+ dn = d_find_alias(dir);
+ if (!dn) {
+ try_async = false;
+ } else {
+ struct ceph_path_info path_info;
+ path = ceph_mdsc_build_path(mdsc, dn, &path_info, 0);
+ if (IS_ERR(path)) {
+ try_async = false;
+ err = 0;
+ } else {
+ err = ceph_mds_check_access(mdsc, path, MAY_WRITE);
+ }
+ ceph_mdsc_free_path_info(&path_info);
+ dput(dn);
+
+ /* For none EACCES cases will let the MDS do the mds auth check */
+ if (err == -EACCES) {
+ return err;
+ } else if (err < 0) {
+ try_async = false;
+ err = 0;
+ }
+ }
+
retry:
req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS);
if (IS_ERR(req)) {
@@ -1209,7 +1393,7 @@ retry:
req->r_num_caps = 2;
req->r_parent = dir;
ihold(dir);
- req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
+ req->r_dentry_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_XATTR_EXCL;
req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
req->r_inode_drop = ceph_drop_caps_for_unlink(inode);
@@ -1217,9 +1401,9 @@ retry:
(req->r_dir_caps = get_caps_for_async_unlink(dir, dentry))) {
struct ceph_dentry_info *di = ceph_dentry(dentry);
- dout("async unlink on %llu/%.*s caps=%s", ceph_ino(dir),
- dentry->d_name.len, dentry->d_name.name,
- ceph_cap_string(req->r_dir_caps));
+ doutc(cl, "async unlink on %llx.%llx/'%pd' caps=%s",
+ ceph_vinop(dir), dentry,
+ ceph_cap_string(req->r_dir_caps));
set_bit(CEPH_MDS_R_ASYNC, &req->r_req_flags);
req->r_callback = ceph_async_unlink_cb;
req->r_old_inode = d_inode(dentry);
@@ -1269,11 +1453,12 @@ out:
return err;
}
-static int ceph_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int ceph_rename(struct mnt_idmap *idmap, struct inode *old_dir,
struct dentry *old_dentry, struct inode *new_dir,
struct dentry *new_dentry, unsigned int flags)
{
struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(old_dir->i_sb);
+ struct ceph_client *cl = mdsc->fsc->client;
struct ceph_mds_request *req;
int op = CEPH_MDS_OP_RENAME;
int err;
@@ -1298,8 +1483,14 @@ static int ceph_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
if (err)
return err;
- dout("rename dir %p dentry %p to dir %p dentry %p\n",
- old_dir, old_dentry, new_dir, new_dentry);
+ err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
+ flags);
+ if (err)
+ return err;
+
+ doutc(cl, "%llx.%llx/'%pd' to %llx.%llx/'%pd'\n",
+ ceph_vinop(old_dir), old_dentry, ceph_vinop(new_dir),
+ new_dentry);
req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS);
if (IS_ERR(req))
return PTR_ERR(req);
@@ -1311,9 +1502,9 @@ static int ceph_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
req->r_parent = new_dir;
ihold(new_dir);
set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags);
- req->r_old_dentry_drop = CEPH_CAP_FILE_SHARED;
+ req->r_old_dentry_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_XATTR_EXCL;
req->r_old_dentry_unless = CEPH_CAP_FILE_EXCL;
- req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
+ req->r_dentry_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_XATTR_EXCL;
req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
/* release LINK_RDCACHE on source inode (mds will lock it) */
req->r_old_inode_drop = CEPH_CAP_LINK_SHARED | CEPH_CAP_LINK_EXCL;
@@ -1344,9 +1535,10 @@ static int ceph_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
void __ceph_dentry_lease_touch(struct ceph_dentry_info *di)
{
struct dentry *dn = di->dentry;
- struct ceph_mds_client *mdsc;
+ struct ceph_mds_client *mdsc = ceph_sb_to_fs_client(dn->d_sb)->mdsc;
+ struct ceph_client *cl = mdsc->fsc->client;
- dout("dentry_lease_touch %p %p '%pd'\n", di, dn, dn);
+ doutc(cl, "%p %p '%pd'\n", di, dn, dn);
di->flags |= CEPH_DENTRY_LEASE_LIST;
if (di->flags & CEPH_DENTRY_SHRINK_LIST) {
@@ -1354,7 +1546,6 @@ void __ceph_dentry_lease_touch(struct ceph_dentry_info *di)
return;
}
- mdsc = ceph_sb_to_client(dn->d_sb)->mdsc;
spin_lock(&mdsc->dentry_list_lock);
list_move_tail(&di->lease_list, &mdsc->dentry_leases);
spin_unlock(&mdsc->dentry_list_lock);
@@ -1378,10 +1569,10 @@ static void __dentry_dir_lease_touch(struct ceph_mds_client* mdsc,
void __ceph_dentry_dir_lease_touch(struct ceph_dentry_info *di)
{
struct dentry *dn = di->dentry;
- struct ceph_mds_client *mdsc;
+ struct ceph_mds_client *mdsc = ceph_sb_to_fs_client(dn->d_sb)->mdsc;
+ struct ceph_client *cl = mdsc->fsc->client;
- dout("dentry_dir_lease_touch %p %p '%pd' (offset 0x%llx)\n",
- di, dn, dn, di->offset);
+ doutc(cl, "%p %p '%pd' (offset 0x%llx)\n", di, dn, dn, di->offset);
if (!list_empty(&di->lease_list)) {
if (di->flags & CEPH_DENTRY_LEASE_LIST) {
@@ -1401,9 +1592,8 @@ void __ceph_dentry_dir_lease_touch(struct ceph_dentry_info *di)
return;
}
- mdsc = ceph_sb_to_client(dn->d_sb)->mdsc;
spin_lock(&mdsc->dentry_list_lock);
- __dentry_dir_lease_touch(mdsc, di),
+ __dentry_dir_lease_touch(mdsc, di);
spin_unlock(&mdsc->dentry_list_lock);
}
@@ -1415,7 +1605,7 @@ static void __dentry_lease_unlist(struct ceph_dentry_info *di)
if (list_empty(&di->lease_list))
return;
- mdsc = ceph_sb_to_client(di->dentry->d_sb)->mdsc;
+ mdsc = ceph_sb_to_fs_client(di->dentry->d_sb)->mdsc;
spin_lock(&mdsc->dentry_list_lock);
list_del_init(&di->lease_list);
spin_unlock(&mdsc->dentry_list_lock);
@@ -1435,10 +1625,12 @@ struct ceph_lease_walk_control {
unsigned long dir_lease_ttl;
};
+static int __dir_lease_check(const struct dentry *, struct ceph_lease_walk_control *);
+static int __dentry_lease_check(const struct dentry *);
+
static unsigned long
__dentry_leases_walk(struct ceph_mds_client *mdsc,
- struct ceph_lease_walk_control *lwc,
- int (*check)(struct dentry*, void*))
+ struct ceph_lease_walk_control *lwc)
{
struct ceph_dentry_info *di, *tmp;
struct dentry *dentry, *last = NULL;
@@ -1466,7 +1658,10 @@ __dentry_leases_walk(struct ceph_mds_client *mdsc,
goto next;
}
- ret = check(dentry, lwc);
+ if (lwc->dir_lease)
+ ret = __dir_lease_check(dentry, lwc);
+ else
+ ret = __dentry_lease_check(dentry);
if (ret & TOUCH) {
/* move it into tail of dir lease list */
__dentry_dir_lease_touch(mdsc, di);
@@ -1523,7 +1718,7 @@ next:
return freed;
}
-static int __dentry_lease_check(struct dentry *dentry, void *arg)
+static int __dentry_lease_check(const struct dentry *dentry)
{
struct ceph_dentry_info *di = ceph_dentry(dentry);
int ret;
@@ -1538,9 +1733,9 @@ static int __dentry_lease_check(struct dentry *dentry, void *arg)
return DELETE;
}
-static int __dir_lease_check(struct dentry *dentry, void *arg)
+static int __dir_lease_check(const struct dentry *dentry,
+ struct ceph_lease_walk_control *lwc)
{
- struct ceph_lease_walk_control *lwc = arg;
struct ceph_dentry_info *di = ceph_dentry(dentry);
int ret = __dir_lease_try_check(dentry);
@@ -1579,7 +1774,7 @@ int ceph_trim_dentries(struct ceph_mds_client *mdsc)
lwc.dir_lease = false;
lwc.nr_to_scan = CEPH_CAPS_PER_RELEASE * 2;
- freed = __dentry_leases_walk(mdsc, &lwc, __dentry_lease_check);
+ freed = __dentry_leases_walk(mdsc, &lwc);
if (!lwc.nr_to_scan) /* more invalid leases */
return -EAGAIN;
@@ -1589,7 +1784,7 @@ int ceph_trim_dentries(struct ceph_mds_client *mdsc)
lwc.dir_lease = true;
lwc.expire_dir_lease = freed < count;
lwc.dir_lease_ttl = mdsc->fsc->mount_options->caps_wanted_delay_max * HZ;
- freed +=__dentry_leases_walk(mdsc, &lwc, __dir_lease_check);
+ freed +=__dentry_leases_walk(mdsc, &lwc);
if (!lwc.nr_to_scan) /* more to check */
return -EAGAIN;
@@ -1642,6 +1837,8 @@ static int dentry_lease_is_valid(struct dentry *dentry, unsigned int flags)
{
struct ceph_dentry_info *di;
struct ceph_mds_session *session = NULL;
+ struct ceph_mds_client *mdsc = ceph_sb_to_fs_client(dentry->d_sb)->mdsc;
+ struct ceph_client *cl = mdsc->fsc->client;
u32 seq = 0;
int valid = 0;
@@ -1674,7 +1871,7 @@ static int dentry_lease_is_valid(struct dentry *dentry, unsigned int flags)
CEPH_MDS_LEASE_RENEW, seq);
ceph_put_mds_session(session);
}
- dout("dentry_lease_is_valid - dentry %p = %d\n", dentry, valid);
+ doutc(cl, "dentry %p = %d\n", dentry, valid);
return valid;
}
@@ -1717,6 +1914,7 @@ static int dir_lease_is_valid(struct inode *dir, struct dentry *dentry,
struct ceph_mds_client *mdsc)
{
struct ceph_inode_info *ci = ceph_inode(dir);
+ struct ceph_client *cl = mdsc->fsc->client;
int valid;
int shared_gen;
@@ -1738,42 +1936,39 @@ static int dir_lease_is_valid(struct inode *dir, struct dentry *dentry,
valid = 0;
spin_unlock(&dentry->d_lock);
}
- dout("dir_lease_is_valid dir %p v%u dentry %p = %d\n",
- dir, (unsigned)atomic_read(&ci->i_shared_gen), dentry, valid);
+ doutc(cl, "dir %p %llx.%llx v%u dentry %p '%pd' = %d\n", dir,
+ ceph_vinop(dir), (unsigned)atomic_read(&ci->i_shared_gen),
+ dentry, dentry, valid);
return valid;
}
/*
* Check if cached dentry can be trusted.
*/
-static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
+static int ceph_d_revalidate(struct inode *dir, const struct qstr *name,
+ struct dentry *dentry, unsigned int flags)
{
+ struct ceph_mds_client *mdsc = ceph_sb_to_fs_client(dentry->d_sb)->mdsc;
+ struct ceph_client *cl = mdsc->fsc->client;
int valid = 0;
- struct dentry *parent;
- struct inode *dir, *inode;
- struct ceph_mds_client *mdsc;
+ struct inode *inode;
- if (flags & LOOKUP_RCU) {
- parent = READ_ONCE(dentry->d_parent);
- dir = d_inode_rcu(parent);
- if (!dir)
- return -ECHILD;
- inode = d_inode_rcu(dentry);
- } else {
- parent = dget_parent(dentry);
- dir = d_inode(parent);
- inode = d_inode(dentry);
- }
+ valid = fscrypt_d_revalidate(dir, name, dentry, flags);
+ if (valid <= 0)
+ return valid;
+
+ inode = d_inode_rcu(dentry);
- dout("d_revalidate %p '%pd' inode %p offset 0x%llx\n", dentry,
- dentry, inode, ceph_dentry(dentry)->offset);
+ doutc(cl, "%p '%pd' inode %p offset 0x%llx nokey %d\n",
+ dentry, dentry, inode, ceph_dentry(dentry)->offset,
+ !!(dentry->d_flags & DCACHE_NOKEY_NAME));
- mdsc = ceph_sb_to_client(dir->i_sb)->mdsc;
+ mdsc = ceph_sb_to_fs_client(dir->i_sb)->mdsc;
/* always trust cached snapped dentries, snapdir dentry */
if (ceph_snap(dir) != CEPH_NOSNAP) {
- dout("d_revalidate %p '%pd' inode %p is SNAPPED\n", dentry,
- dentry, inode);
+ doutc(cl, "%p '%pd' inode %p is SNAPPED\n", dentry,
+ dentry, inode);
valid = 1;
} else if (inode && ceph_snap(inode) == CEPH_SNAPDIR) {
valid = 1;
@@ -1808,6 +2003,8 @@ static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
req->r_parent = dir;
ihold(dir);
+ req->r_dname = name;
+
mask = CEPH_STAT_CAP_INODE | CEPH_CAP_AUTH_SHARED;
if (ceph_security_xattr_wanted(dir))
mask |= CEPH_CAP_XATTR_SHARED;
@@ -1828,19 +2025,16 @@ static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
break;
}
ceph_mdsc_put_request(req);
- dout("d_revalidate %p lookup result=%d\n",
- dentry, err);
+ doutc(cl, "%p '%pd', lookup result=%d\n", dentry,
+ dentry, err);
}
} else {
percpu_counter_inc(&mdsc->metric.d_lease_hit);
}
- dout("d_revalidate %p %s\n", dentry, valid ? "valid" : "invalid");
+ doutc(cl, "%p '%pd' %s\n", dentry, dentry, valid ? "valid" : "invalid");
if (!valid)
ceph_dir_clear_complete(dir);
-
- if (!(flags & LOOKUP_RCU))
- dput(parent);
return valid;
}
@@ -1858,7 +2052,7 @@ static int ceph_d_delete(const struct dentry *dentry)
return 0;
if (ceph_snap(d_inode(dentry)) != CEPH_NOSNAP)
return 0;
- /* vaild lease? */
+ /* valid lease? */
di = ceph_dentry(dentry);
if (di) {
if (__dentry_lease_is_valid(di))
@@ -1875,9 +2069,9 @@ static int ceph_d_delete(const struct dentry *dentry)
static void ceph_d_release(struct dentry *dentry)
{
struct ceph_dentry_info *di = ceph_dentry(dentry);
- struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb);
+ struct ceph_fs_client *fsc = ceph_sb_to_fs_client(dentry->d_sb);
- dout("d_release %p\n", dentry);
+ doutc(fsc->client, "dentry %p '%pd'\n", dentry, dentry);
atomic64_dec(&fsc->mdsc->metric.total_dentries);
@@ -1898,10 +2092,12 @@ static void ceph_d_release(struct dentry *dentry)
*/
static void ceph_d_prune(struct dentry *dentry)
{
+ struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(dentry->d_sb);
+ struct ceph_client *cl = mdsc->fsc->client;
struct ceph_inode_info *dir_ci;
struct ceph_dentry_info *di;
- dout("ceph_d_prune %pd %p\n", dentry, dentry);
+ doutc(cl, "dentry %p '%pd'\n", dentry, dentry);
/* do we have a valid parent? */
if (IS_ROOT(dentry))
@@ -1944,7 +2140,7 @@ static ssize_t ceph_read_dir(struct file *file, char __user *buf, size_t size,
int left;
const int bufsize = 1024;
- if (!ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), DIRSTAT))
+ if (!ceph_test_mount_opt(ceph_sb_to_fs_client(inode->i_sb), DIRSTAT))
return -EISDIR;
if (!dfi->dir_info) {
@@ -1960,7 +2156,7 @@ static ssize_t ceph_read_dir(struct file *file, char __user *buf, size_t size,
" rfiles: %20lld\n"
" rsubdirs: %20lld\n"
"rbytes: %20lld\n"
- "rctime: %10lld.%09ld\n",
+ "rctime: %ptSp\n",
ci->i_files + ci->i_subdirs,
ci->i_files,
ci->i_subdirs,
@@ -1968,8 +2164,7 @@ static ssize_t ceph_read_dir(struct file *file, char __user *buf, size_t size,
ci->i_rfiles,
ci->i_rsubdirs,
ci->i_rbytes,
- ci->i_rctime.tv_sec,
- ci->i_rctime.tv_nsec);
+ &ci->i_rctime);
}
if (*ppos >= dfi->dir_info_len)
@@ -2007,9 +2202,10 @@ unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn)
}
}
+WRAP_DIR_ITER(ceph_readdir) // FIXME!
const struct file_operations ceph_dir_fops = {
.read = ceph_read_dir,
- .iterate = ceph_readdir,
+ .iterate_shared = shared_ceph_readdir,
.llseek = ceph_dir_llseek,
.open = ceph_open,
.release = ceph_release,
@@ -2021,7 +2217,7 @@ const struct file_operations ceph_dir_fops = {
};
const struct file_operations ceph_snapdir_fops = {
- .iterate = ceph_readdir,
+ .iterate_shared = shared_ceph_readdir,
.llseek = ceph_dir_llseek,
.open = ceph_open,
.release = ceph_release,
generated by cgit (git 2.34.1) at 2025-12-25 10:26:15 +0000