// SPDX-License-Identifier: GPL-2.0
#include "bcachefs.h"
+#include "acl.h"
#include "bkey_methods.h"
#include "btree_update.h"
#include "extents.h"
}
const struct bch_hash_desc bch2_xattr_hash_desc = {
- .btree_id = BTREE_ID_XATTRS,
+ .btree_id = BTREE_ID_xattrs,
.key_type = KEY_TYPE_xattr,
.hash_key = xattr_hash_key,
.hash_bkey = xattr_hash_bkey,
.cmp_bkey = xattr_cmp_bkey,
};
-const char *bch2_xattr_invalid(const struct bch_fs *c, struct bkey_s_c k)
+int bch2_xattr_invalid(struct bch_fs *c, struct bkey_s_c k,
+ enum bkey_invalid_flags flags,
+ struct printbuf *err)
{
- const struct xattr_handler *handler;
struct bkey_s_c_xattr xattr = bkey_s_c_to_xattr(k);
+ unsigned val_u64s = xattr_val_u64s(xattr.v->x_name_len,
+ le16_to_cpu(xattr.v->x_val_len));
+ int ret = 0;
- if (bkey_val_bytes(k.k) < sizeof(struct bch_xattr))
- return "value too small";
-
- if (bkey_val_u64s(k.k) <
- xattr_val_u64s(xattr.v->x_name_len,
- le16_to_cpu(xattr.v->x_val_len)))
- return "value too small";
+ bkey_fsck_err_on(bkey_val_u64s(k.k) < val_u64s, c, err,
+ xattr_val_size_too_small,
+ "value too small (%zu < %u)",
+ bkey_val_u64s(k.k), val_u64s);
- if (bkey_val_u64s(k.k) >
- xattr_val_u64s(xattr.v->x_name_len,
- le16_to_cpu(xattr.v->x_val_len) + 4))
- return "value too big";
+ /* XXX why +4 ? */
+ val_u64s = xattr_val_u64s(xattr.v->x_name_len,
+ le16_to_cpu(xattr.v->x_val_len) + 4);
- handler = bch2_xattr_type_to_handler(xattr.v->x_type);
- if (!handler)
- return "invalid type";
+ bkey_fsck_err_on(bkey_val_u64s(k.k) > val_u64s, c, err,
+ xattr_val_size_too_big,
+ "value too big (%zu > %u)",
+ bkey_val_u64s(k.k), val_u64s);
- if (memchr(xattr.v->x_name, '\0', xattr.v->x_name_len))
- return "xattr name has invalid characters";
+ bkey_fsck_err_on(!bch2_xattr_type_to_handler(xattr.v->x_type), c, err,
+ xattr_invalid_type,
+ "invalid type (%u)", xattr.v->x_type);
- return NULL;
+ bkey_fsck_err_on(memchr(xattr.v->x_name, '\0', xattr.v->x_name_len), c, err,
+ xattr_name_invalid_chars,
+ "xattr name has invalid characters");
+fsck_err:
+ return ret;
}
void bch2_xattr_to_text(struct printbuf *out, struct bch_fs *c,
handler = bch2_xattr_type_to_handler(xattr.v->x_type);
if (handler && handler->prefix)
- pr_buf(out, "%s", handler->prefix);
+ prt_printf(out, "%s", handler->prefix);
else if (handler)
- pr_buf(out, "(type %u)", xattr.v->x_type);
+ prt_printf(out, "(type %u)", xattr.v->x_type);
else
- pr_buf(out, "(unknown type %u)", xattr.v->x_type);
-
- bch_scnmemcpy(out, xattr.v->x_name,
- xattr.v->x_name_len);
- pr_buf(out, ":");
- bch_scnmemcpy(out, xattr_val(xattr.v),
- le16_to_cpu(xattr.v->x_val_len));
+ prt_printf(out, "(unknown type %u)", xattr.v->x_type);
+
+ prt_printf(out, "%.*s:%.*s",
+ xattr.v->x_name_len,
+ xattr.v->x_name,
+ le16_to_cpu(xattr.v->x_val_len),
+ (char *) xattr_val(xattr.v));
+
+ if (xattr.v->x_type == KEY_TYPE_XATTR_INDEX_POSIX_ACL_ACCESS ||
+ xattr.v->x_type == KEY_TYPE_XATTR_INDEX_POSIX_ACL_DEFAULT) {
+ prt_char(out, ' ');
+ bch2_acl_to_text(out, xattr_val(xattr.v),
+ le16_to_cpu(xattr.v->x_val_len));
+ }
}
-int bch2_xattr_get(struct bch_fs *c, struct bch_inode_info *inode,
- const char *name, void *buffer, size_t size, int type)
+static int bch2_xattr_get_trans(struct btree_trans *trans, struct bch_inode_info *inode,
+ const char *name, void *buffer, size_t size, int type)
{
- struct btree_trans trans;
- struct btree_iter *iter;
+ struct bch_hash_info hash = bch2_hash_info_init(trans->c, &inode->ei_inode);
+ struct xattr_search_key search = X_SEARCH(type, name, strlen(name));
+ struct btree_iter iter;
struct bkey_s_c_xattr xattr;
+ struct bkey_s_c k;
int ret;
- bch2_trans_init(&trans, c, 0, 0);
-
- iter = bch2_hash_lookup(&trans, bch2_xattr_hash_desc,
- &inode->ei_str_hash, inode->v.i_ino,
- &X_SEARCH(type, name, strlen(name)),
- 0);
- if (IS_ERR(iter)) {
- bch2_trans_exit(&trans);
- BUG_ON(PTR_ERR(iter) == -EINTR);
+ ret = bch2_hash_lookup(trans, &iter, bch2_xattr_hash_desc, &hash,
+ inode_inum(inode), &search, 0);
+ if (ret)
+ goto err1;
- return PTR_ERR(iter) == -ENOENT ? -ENODATA : PTR_ERR(iter);
- }
+ k = bch2_btree_iter_peek_slot(&iter);
+ ret = bkey_err(k);
+ if (ret)
+ goto err2;
- xattr = bkey_s_c_to_xattr(bch2_btree_iter_peek_slot(iter));
+ xattr = bkey_s_c_to_xattr(k);
ret = le16_to_cpu(xattr.v->x_val_len);
if (buffer) {
if (ret > size)
else
memcpy(buffer, xattr_val(xattr.v), ret);
}
-
- bch2_trans_exit(&trans);
- return ret;
+err2:
+ bch2_trans_iter_exit(trans, &iter);
+err1:
+ return ret < 0 && bch2_err_matches(ret, ENOENT) ? -ENODATA : ret;
}
-int bch2_xattr_set(struct btree_trans *trans, u64 inum,
+int bch2_xattr_set(struct btree_trans *trans, subvol_inum inum,
+ struct bch_inode_unpacked *inode_u,
const struct bch_hash_info *hash_info,
const char *name, const void *value, size_t size,
int type, int flags)
{
+ struct bch_fs *c = trans->c;
+ struct btree_iter inode_iter = { NULL };
int ret;
+ ret = bch2_subvol_is_ro_trans(trans, inum.subvol) ?:
+ bch2_inode_peek(trans, &inode_iter, inode_u, inum, BTREE_ITER_INTENT);
+ if (ret)
+ return ret;
+
+ inode_u->bi_ctime = bch2_current_time(c);
+
+ ret = bch2_inode_write(trans, &inode_iter, inode_u);
+ bch2_trans_iter_exit(trans, &inode_iter);
+
+ if (ret)
+ return ret;
+
if (value) {
struct bkey_i_xattr *xattr;
unsigned namelen = strlen(name);
hash_info, inum, &search);
}
- if (ret == -ENOENT)
+ if (bch2_err_matches(ret, ENOENT))
ret = flags & XATTR_REPLACE ? -ENODATA : 0;
return ret;
}
static int bch2_xattr_list_bcachefs(struct bch_fs *c,
- struct bch_inode_info *inode,
+ struct bch_inode_unpacked *inode,
struct xattr_buf *buf,
bool all)
{
u64 v;
for (id = 0; id < Inode_opt_nr; id++) {
- v = bch2_inode_opt_get(&inode->ei_inode, id);
+ v = bch2_inode_opt_get(inode, id);
if (!v)
continue;
if (!all &&
- !(inode->ei_inode.bi_fields_set & (1 << id)))
+ !(inode->bi_fields_set & (1 << id)))
continue;
ret = __bch2_xattr_emit(prefix, bch2_inode_opts[id],
{
struct bch_fs *c = dentry->d_sb->s_fs_info;
struct bch_inode_info *inode = to_bch_ei(dentry->d_inode);
- struct btree_trans trans;
- struct btree_iter *iter;
+ struct btree_trans *trans = bch2_trans_get(c);
+ struct btree_iter iter;
struct bkey_s_c k;
struct xattr_buf buf = { .buf = buffer, .len = buffer_size };
- u64 inum = dentry->d_inode->i_ino;
+ u64 offset = 0, inum = inode->ei_inode.bi_inum;
+ u32 snapshot;
int ret;
+retry:
+ bch2_trans_begin(trans);
+ iter = (struct btree_iter) { NULL };
- bch2_trans_init(&trans, c, 0, 0);
-
- for_each_btree_key(&trans, iter, BTREE_ID_XATTRS,
- POS(inum, 0), 0, k, ret) {
- BUG_ON(k.k->p.inode < inum);
-
- if (k.k->p.inode > inum)
- break;
+ ret = bch2_subvolume_get_snapshot(trans, inode->ei_subvol, &snapshot);
+ if (ret)
+ goto err;
+ for_each_btree_key_upto_norestart(trans, iter, BTREE_ID_xattrs,
+ SPOS(inum, offset, snapshot),
+ POS(inum, U64_MAX), 0, k, ret) {
if (k.k->type != KEY_TYPE_xattr)
continue;
if (ret)
break;
}
- ret = bch2_trans_exit(&trans) ?: ret;
+
+ offset = iter.pos.offset;
+ bch2_trans_iter_exit(trans, &iter);
+err:
+ if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ goto retry;
+
+ bch2_trans_put(trans);
if (ret)
- return ret;
+ goto out;
- ret = bch2_xattr_list_bcachefs(c, inode, &buf, false);
+ ret = bch2_xattr_list_bcachefs(c, &inode->ei_inode, &buf, false);
if (ret)
- return ret;
+ goto out;
- ret = bch2_xattr_list_bcachefs(c, inode, &buf, true);
+ ret = bch2_xattr_list_bcachefs(c, &inode->ei_inode, &buf, true);
if (ret)
- return ret;
+ goto out;
return buf.used;
+out:
+ return bch2_err_class(ret);
}
static int bch2_xattr_get_handler(const struct xattr_handler *handler,
{
struct bch_inode_info *inode = to_bch_ei(vinode);
struct bch_fs *c = inode->v.i_sb->s_fs_info;
+ int ret = bch2_trans_do(c, NULL, NULL, 0,
+ bch2_xattr_get_trans(trans, inode, name, buffer, size, handler->flags));
- return bch2_xattr_get(c, inode, name, buffer, size, handler->flags);
+ return bch2_err_class(ret);
}
static int bch2_xattr_set_handler(const struct xattr_handler *handler,
+ struct mnt_idmap *idmap,
struct dentry *dentry, struct inode *vinode,
const char *name, const void *value,
size_t size, int flags)
{
struct bch_inode_info *inode = to_bch_ei(vinode);
struct bch_fs *c = inode->v.i_sb->s_fs_info;
+ struct bch_hash_info hash = bch2_hash_info_init(c, &inode->ei_inode);
+ struct bch_inode_unpacked inode_u;
+ int ret;
+
+ ret = bch2_trans_run(c,
+ commit_do(trans, NULL, NULL, 0,
+ bch2_xattr_set(trans, inode_inum(inode), &inode_u,
+ &hash, name, value, size,
+ handler->flags, flags)) ?:
+ (bch2_inode_update_after_write(trans, inode, &inode_u, ATTR_CTIME), 0));
- return bch2_trans_do(c, NULL, &inode->ei_journal_seq, 0,
- bch2_xattr_set(&trans, inode->v.i_ino,
- &inode->ei_str_hash,
- name, value, size,
- handler->flags, flags));
+ return bch2_err_class(ret);
}
static const struct xattr_handler bch_xattr_user_handler = {
struct bch_inode_info *inode = to_bch_ei(vinode);
struct bch_fs *c = inode->v.i_sb->s_fs_info;
struct bch_opts opts =
- bch2_inode_opts_to_opts(bch2_inode_opts_get(&inode->ei_inode));
+ bch2_inode_opts_to_opts(&inode->ei_inode);
const struct bch_option *opt;
int id, inode_opt_id;
- char buf[512];
- struct printbuf out = PBUF(buf);
- unsigned val_len;
+ struct printbuf out = PRINTBUF;
+ int ret;
u64 v;
id = bch2_opt_lookup(name);
return -ENODATA;
v = bch2_opt_get_by_id(&opts, id);
- bch2_opt_to_text(&out, c, opt, v, 0);
+ bch2_opt_to_text(&out, c, c->disk_sb.sb, opt, v, 0);
- val_len = out.pos - buf;
+ ret = out.pos;
- if (buffer && val_len > size)
- return -ERANGE;
+ if (out.allocation_failure) {
+ ret = -ENOMEM;
+ } else if (buffer) {
+ if (out.pos > size)
+ ret = -ERANGE;
+ else
+ memcpy(buffer, out.buf, out.pos);
+ }
- if (buffer)
- memcpy(buffer, buf, val_len);
- return val_len;
+ printbuf_exit(&out);
+ return ret;
}
static int bch2_xattr_bcachefs_get(const struct xattr_handler *handler,
bool defined;
};
-static int inode_opt_set_fn(struct bch_inode_info *inode,
+static int inode_opt_set_fn(struct btree_trans *trans,
+ struct bch_inode_info *inode,
struct bch_inode_unpacked *bi,
void *p)
{
}
static int bch2_xattr_bcachefs_set(const struct xattr_handler *handler,
+ struct mnt_idmap *idmap,
struct dentry *dentry, struct inode *vinode,
const char *name, const void *value,
size_t size, int flags)
memcpy(buf, value, size);
buf[size] = '\0';
- ret = bch2_opt_parse(c, opt, buf, &v);
+ ret = bch2_opt_parse(c, opt, buf, &v, NULL);
kfree(buf);
if (ret < 0)
s.v = v + 1;
s.defined = true;
} else {
+ /*
+ * Check if this option was set on the parent - if so, switched
+ * back to inheriting from the parent:
+ *
+ * rename() also has to deal with keeping inherited options up
+ * to date - see bch2_reinherit_attrs()
+ */
+ spin_lock(&dentry->d_lock);
if (!IS_ROOT(dentry)) {
struct bch_inode_info *dir =
to_bch_ei(d_inode(dentry->d_parent));
} else {
s.v = 0;
}
+ spin_unlock(&dentry->d_lock);
s.defined = false;
}
mutex_lock(&inode->ei_update_lock);
if (inode_opt_id == Inode_opt_project) {
- ret = bch2_set_projid(c, inode, s.v);
+ /*
+ * inode fields accessible via the xattr interface are stored
+ * with a +1 bias, so that 0 means unset:
+ */
+ ret = bch2_set_projid(c, inode, s.v ? s.v - 1 : 0);
if (ret)
goto err;
}
if (value &&
(opt_id == Opt_background_compression ||
opt_id == Opt_background_target))
- bch2_rebalance_add_work(c, inode->v.i_blocks);
+ bch2_set_rebalance_needs_scan(c, inode->ei_inode.bi_inum);
- return ret;
+ return bch2_err_class(ret);
}
static const struct xattr_handler bch_xattr_bcachefs_handler = {
const struct xattr_handler *bch2_xattr_handlers[] = {
&bch_xattr_user_handler,
- &posix_acl_access_xattr_handler,
- &posix_acl_default_xattr_handler,
+#ifdef CONFIG_BCACHEFS_POSIX_ACL
+ &nop_posix_acl_access,
+ &nop_posix_acl_default,
+#endif
&bch_xattr_trusted_handler,
&bch_xattr_security_handler,
#ifndef NO_BCACHEFS_FS
static const struct xattr_handler *bch_xattr_handler_map[] = {
[KEY_TYPE_XATTR_INDEX_USER] = &bch_xattr_user_handler,
[KEY_TYPE_XATTR_INDEX_POSIX_ACL_ACCESS] =
- &posix_acl_access_xattr_handler,
+ &nop_posix_acl_access,
[KEY_TYPE_XATTR_INDEX_POSIX_ACL_DEFAULT] =
- &posix_acl_default_xattr_handler,
+ &nop_posix_acl_default,
[KEY_TYPE_XATTR_INDEX_TRUSTED] = &bch_xattr_trusted_handler,
[KEY_TYPE_XATTR_INDEX_SECURITY] = &bch_xattr_security_handler,
};
projects / bcachefs-tools-debian / blobdiff