move Rust sources to top level, C sources into c_src

This moves the Rust sources out of rust_src/ and into the top level.
Running the bcachefs executable out of the development tree is now:

$ ./target/release/bcachefs command
or
$ cargo run --profile release -- command

instead of "./bcachefs command".

Building and installing is still:

$ make && make install

Signed-off-by: Thomas Bertschinger <tahbertschinger@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 0 insertions, 653 deletions

diff --git a/libbcachefs/xattr.c b/libbcachefs/xattr.c
deleted file mode 100644
index 5a1858fb..00000000
--- a/libbcachefs/xattr.c
+++ /dev/null
@@ -1,653 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-#include "bcachefs.h"
-#include "acl.h"
-#include "bkey_methods.h"
-#include "btree_update.h"
-#include "extents.h"
-#include "fs.h"
-#include "rebalance.h"
-#include "str_hash.h"
-#include "xattr.h"
-
-#include <linux/dcache.h>
-#include <linux/posix_acl_xattr.h>
-#include <linux/xattr.h>
-
-static const struct xattr_handler *bch2_xattr_type_to_handler(unsigned);
-
-static u64 bch2_xattr_hash(const struct bch_hash_info *info,
-			  const struct xattr_search_key *key)
-{
-	struct bch_str_hash_ctx ctx;
-
-	bch2_str_hash_init(&ctx, info);
-	bch2_str_hash_update(&ctx, info, &key->type, sizeof(key->type));
-	bch2_str_hash_update(&ctx, info, key->name.name, key->name.len);
-
-	return bch2_str_hash_end(&ctx, info);
-}
-
-static u64 xattr_hash_key(const struct bch_hash_info *info, const void *key)
-{
-	return bch2_xattr_hash(info, key);
-}
-
-static u64 xattr_hash_bkey(const struct bch_hash_info *info, struct bkey_s_c k)
-{
-	struct bkey_s_c_xattr x = bkey_s_c_to_xattr(k);
-
-	return bch2_xattr_hash(info,
-		 &X_SEARCH(x.v->x_type, x.v->x_name, x.v->x_name_len));
-}
-
-static bool xattr_cmp_key(struct bkey_s_c _l, const void *_r)
-{
-	struct bkey_s_c_xattr l = bkey_s_c_to_xattr(_l);
-	const struct xattr_search_key *r = _r;
-
-	return l.v->x_type != r->type ||
-		l.v->x_name_len != r->name.len ||
-		memcmp(l.v->x_name, r->name.name, r->name.len);
-}
-
-static bool xattr_cmp_bkey(struct bkey_s_c _l, struct bkey_s_c _r)
-{
-	struct bkey_s_c_xattr l = bkey_s_c_to_xattr(_l);
-	struct bkey_s_c_xattr r = bkey_s_c_to_xattr(_r);
-
-	return l.v->x_type != r.v->x_type ||
-		l.v->x_name_len != r.v->x_name_len ||
-		memcmp(l.v->x_name, r.v->x_name, r.v->x_name_len);
-}
-
-const struct bch_hash_desc bch2_xattr_hash_desc = {
-	.btree_id	= BTREE_ID_xattrs,
-	.key_type	= KEY_TYPE_xattr,
-	.hash_key	= xattr_hash_key,
-	.hash_bkey	= xattr_hash_bkey,
-	.cmp_key	= xattr_cmp_key,
-	.cmp_bkey	= xattr_cmp_bkey,
-};
-
-int bch2_xattr_invalid(struct bch_fs *c, struct bkey_s_c k,
-		       enum bkey_invalid_flags flags,
-		       struct printbuf *err)
-{
-	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;
-
-	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);
-
-	/* XXX why +4 ? */
-	val_u64s = xattr_val_u64s(xattr.v->x_name_len,
-				  le16_to_cpu(xattr.v->x_val_len) + 4);
-
-	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);
-
-	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);
-
-	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,
-			struct bkey_s_c k)
-{
-	const struct xattr_handler *handler;
-	struct bkey_s_c_xattr xattr = bkey_s_c_to_xattr(k);
-
-	handler = bch2_xattr_type_to_handler(xattr.v->x_type);
-	if (handler && handler->prefix)
-		prt_printf(out, "%s", handler->prefix);
-	else if (handler)
-		prt_printf(out, "(type %u)", xattr.v->x_type);
-	else
-		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));
-	}
-}
-
-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 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;
-
-	ret = bch2_hash_lookup(trans, &iter, bch2_xattr_hash_desc, &hash,
-			       inode_inum(inode), &search, 0);
-	if (ret)
-		goto err1;
-
-	k = bch2_btree_iter_peek_slot(&iter);
-	ret = bkey_err(k);
-	if (ret)
-		goto err2;
-
-	xattr = bkey_s_c_to_xattr(k);
-	ret = le16_to_cpu(xattr.v->x_val_len);
-	if (buffer) {
-		if (ret > size)
-			ret = -ERANGE;
-		else
-			memcpy(buffer, xattr_val(xattr.v), 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, 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);
-		unsigned u64s = BKEY_U64s +
-			xattr_val_u64s(namelen, size);
-
-		if (u64s > U8_MAX)
-			return -ERANGE;
-
-		xattr = bch2_trans_kmalloc(trans, u64s * sizeof(u64));
-		if (IS_ERR(xattr))
-			return PTR_ERR(xattr);
-
-		bkey_xattr_init(&xattr->k_i);
-		xattr->k.u64s		= u64s;
-		xattr->v.x_type		= type;
-		xattr->v.x_name_len	= namelen;
-		xattr->v.x_val_len	= cpu_to_le16(size);
-		memcpy(xattr->v.x_name, name, namelen);
-		memcpy(xattr_val(&xattr->v), value, size);
-
-		ret = bch2_hash_set(trans, bch2_xattr_hash_desc, hash_info,
-			      inum, &xattr->k_i,
-			      (flags & XATTR_CREATE ? BCH_HASH_SET_MUST_CREATE : 0)|
-			      (flags & XATTR_REPLACE ? BCH_HASH_SET_MUST_REPLACE : 0));
-	} else {
-		struct xattr_search_key search =
-			X_SEARCH(type, name, strlen(name));
-
-		ret = bch2_hash_delete(trans, bch2_xattr_hash_desc,
-				       hash_info, inum, &search);
-	}
-
-	if (bch2_err_matches(ret, ENOENT))
-		ret = flags & XATTR_REPLACE ? -ENODATA : 0;
-
-	return ret;
-}
-
-struct xattr_buf {
-	char		*buf;
-	size_t		len;
-	size_t		used;
-};
-
-static int __bch2_xattr_emit(const char *prefix,
-			     const char *name, size_t name_len,
-			     struct xattr_buf *buf)
-{
-	const size_t prefix_len = strlen(prefix);
-	const size_t total_len = prefix_len + name_len + 1;
-
-	if (buf->buf) {
-		if (buf->used + total_len > buf->len)
-			return -ERANGE;
-
-		memcpy(buf->buf + buf->used, prefix, prefix_len);
-		memcpy(buf->buf + buf->used + prefix_len,
-		       name, name_len);
-		buf->buf[buf->used + prefix_len + name_len] = '\0';
-	}
-
-	buf->used += total_len;
-	return 0;
-}
-
-static int bch2_xattr_emit(struct dentry *dentry,
-			    const struct bch_xattr *xattr,
-			    struct xattr_buf *buf)
-{
-	const struct xattr_handler *handler =
-		bch2_xattr_type_to_handler(xattr->x_type);
-
-	return handler && (!handler->list || handler->list(dentry))
-		? __bch2_xattr_emit(handler->prefix ?: handler->name,
-				    xattr->x_name, xattr->x_name_len, buf)
-		: 0;
-}
-
-static int bch2_xattr_list_bcachefs(struct bch_fs *c,
-				    struct bch_inode_unpacked *inode,
-				    struct xattr_buf *buf,
-				    bool all)
-{
-	const char *prefix = all ? "bcachefs_effective." : "bcachefs.";
-	unsigned id;
-	int ret = 0;
-	u64 v;
-
-	for (id = 0; id < Inode_opt_nr; id++) {
-		v = bch2_inode_opt_get(inode, id);
-		if (!v)
-			continue;
-
-		if (!all &&
-		    !(inode->bi_fields_set & (1 << id)))
-			continue;
-
-		ret = __bch2_xattr_emit(prefix, bch2_inode_opts[id],
-					strlen(bch2_inode_opts[id]), buf);
-		if (ret)
-			break;
-	}
-
-	return ret;
-}
-
-ssize_t bch2_xattr_list(struct dentry *dentry, char *buffer, size_t buffer_size)
-{
-	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 = bch2_trans_get(c);
-	struct btree_iter iter;
-	struct bkey_s_c k;
-	struct xattr_buf buf = { .buf = buffer, .len = buffer_size };
-	u64 offset = 0, inum = inode->ei_inode.bi_inum;
-	u32 snapshot;
-	int ret;
-retry:
-	bch2_trans_begin(trans);
-	iter = (struct btree_iter) { NULL };
-
-	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;
-
-		ret = bch2_xattr_emit(dentry, bkey_s_c_to_xattr(k).v, &buf);
-		if (ret)
-			break;
-	}
-
-	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)
-		goto out;
-
-	ret = bch2_xattr_list_bcachefs(c, &inode->ei_inode, &buf, false);
-	if (ret)
-		goto out;
-
-	ret = bch2_xattr_list_bcachefs(c, &inode->ei_inode, &buf, true);
-	if (ret)
-		goto out;
-
-	return buf.used;
-out:
-	return bch2_err_class(ret);
-}
-
-static int bch2_xattr_get_handler(const struct xattr_handler *handler,
-				  struct dentry *dentry, struct inode *vinode,
-				  const char *name, void *buffer, size_t size)
-{
-	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_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_err_class(ret);
-}
-
-static const struct xattr_handler bch_xattr_user_handler = {
-	.prefix	= XATTR_USER_PREFIX,
-	.get	= bch2_xattr_get_handler,
-	.set	= bch2_xattr_set_handler,
-	.flags	= KEY_TYPE_XATTR_INDEX_USER,
-};
-
-static bool bch2_xattr_trusted_list(struct dentry *dentry)
-{
-	return capable(CAP_SYS_ADMIN);
-}
-
-static const struct xattr_handler bch_xattr_trusted_handler = {
-	.prefix	= XATTR_TRUSTED_PREFIX,
-	.list	= bch2_xattr_trusted_list,
-	.get	= bch2_xattr_get_handler,
-	.set	= bch2_xattr_set_handler,
-	.flags	= KEY_TYPE_XATTR_INDEX_TRUSTED,
-};
-
-static const struct xattr_handler bch_xattr_security_handler = {
-	.prefix	= XATTR_SECURITY_PREFIX,
-	.get	= bch2_xattr_get_handler,
-	.set	= bch2_xattr_set_handler,
-	.flags	= KEY_TYPE_XATTR_INDEX_SECURITY,
-};
-
-#ifndef NO_BCACHEFS_FS
-
-static int opt_to_inode_opt(int id)
-{
-	switch (id) {
-#define x(name, ...)				\
-	case Opt_##name: return Inode_opt_##name;
-	BCH_INODE_OPTS()
-#undef  x
-	default:
-		return -1;
-	}
-}
-
-static int __bch2_xattr_bcachefs_get(const struct xattr_handler *handler,
-				struct dentry *dentry, struct inode *vinode,
-				const char *name, void *buffer, size_t size,
-				bool all)
-{
-	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(&inode->ei_inode);
-	const struct bch_option *opt;
-	int id, inode_opt_id;
-	struct printbuf out = PRINTBUF;
-	int ret;
-	u64 v;
-
-	id = bch2_opt_lookup(name);
-	if (id < 0 || !bch2_opt_is_inode_opt(id))
-		return -EINVAL;
-
-	inode_opt_id = opt_to_inode_opt(id);
-	if (inode_opt_id < 0)
-		return -EINVAL;
-
-	opt = bch2_opt_table + id;
-
-	if (!bch2_opt_defined_by_id(&opts, id))
-		return -ENODATA;
-
-	if (!all &&
-	    !(inode->ei_inode.bi_fields_set & (1 << inode_opt_id)))
-		return -ENODATA;
-
-	v = bch2_opt_get_by_id(&opts, id);
-	bch2_opt_to_text(&out, c, c->disk_sb.sb, opt, v, 0);
-
-	ret = out.pos;
-
-	if (out.allocation_failure) {
-		ret = -ENOMEM;
-	} else if (buffer) {
-		if (out.pos > size)
-			ret = -ERANGE;
-		else
-			memcpy(buffer, out.buf, out.pos);
-	}
-
-	printbuf_exit(&out);
-	return ret;
-}
-
-static int bch2_xattr_bcachefs_get(const struct xattr_handler *handler,
-				   struct dentry *dentry, struct inode *vinode,
-				   const char *name, void *buffer, size_t size)
-{
-	return __bch2_xattr_bcachefs_get(handler, dentry, vinode,
-					 name, buffer, size, false);
-}
-
-struct inode_opt_set {
-	int			id;
-	u64			v;
-	bool			defined;
-};
-
-static int inode_opt_set_fn(struct btree_trans *trans,
-			    struct bch_inode_info *inode,
-			    struct bch_inode_unpacked *bi,
-			    void *p)
-{
-	struct inode_opt_set *s = p;
-
-	if (s->defined)
-		bi->bi_fields_set |= 1U << s->id;
-	else
-		bi->bi_fields_set &= ~(1U << s->id);
-
-	bch2_inode_opt_set(bi, s->id, s->v);
-
-	return 0;
-}
-
-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)
-{
-	struct bch_inode_info *inode = to_bch_ei(vinode);
-	struct bch_fs *c = inode->v.i_sb->s_fs_info;
-	const struct bch_option *opt;
-	char *buf;
-	struct inode_opt_set s;
-	int opt_id, inode_opt_id, ret;
-
-	opt_id = bch2_opt_lookup(name);
-	if (opt_id < 0)
-		return -EINVAL;
-
-	opt = bch2_opt_table + opt_id;
-
-	inode_opt_id = opt_to_inode_opt(opt_id);
-	if (inode_opt_id < 0)
-		return -EINVAL;
-
-	s.id = inode_opt_id;
-
-	if (value) {
-		u64 v = 0;
-
-		buf = kmalloc(size + 1, GFP_KERNEL);
-		if (!buf)
-			return -ENOMEM;
-		memcpy(buf, value, size);
-		buf[size] = '\0';
-
-		ret = bch2_opt_parse(c, opt, buf, &v, NULL);
-		kfree(buf);
-
-		if (ret < 0)
-			return ret;
-
-		ret = bch2_opt_check_may_set(c, opt_id, v);
-		if (ret < 0)
-			return ret;
-
-		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));
-
-			s.v = bch2_inode_opt_get(&dir->ei_inode, inode_opt_id);
-		} 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) {
-		/*
-		 * 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;
-	}
-
-	ret = bch2_write_inode(c, inode, inode_opt_set_fn, &s, 0);
-err:
-	mutex_unlock(&inode->ei_update_lock);
-
-	if (value &&
-	    (opt_id == Opt_background_compression ||
-	     opt_id == Opt_background_target))
-		bch2_set_rebalance_needs_scan(c, inode->ei_inode.bi_inum);
-
-	return bch2_err_class(ret);
-}
-
-static const struct xattr_handler bch_xattr_bcachefs_handler = {
-	.prefix	= "bcachefs.",
-	.get	= bch2_xattr_bcachefs_get,
-	.set	= bch2_xattr_bcachefs_set,
-};
-
-static int bch2_xattr_bcachefs_get_effective(
-				const struct xattr_handler *handler,
-				struct dentry *dentry, struct inode *vinode,
-				const char *name, void *buffer, size_t size)
-{
-	return __bch2_xattr_bcachefs_get(handler, dentry, vinode,
-					 name, buffer, size, true);
-}
-
-static const struct xattr_handler bch_xattr_bcachefs_effective_handler = {
-	.prefix	= "bcachefs_effective.",
-	.get	= bch2_xattr_bcachefs_get_effective,
-	.set	= bch2_xattr_bcachefs_set,
-};
-
-#endif /* NO_BCACHEFS_FS */
-
-const struct xattr_handler *bch2_xattr_handlers[] = {
-	&bch_xattr_user_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
-	&bch_xattr_bcachefs_handler,
-	&bch_xattr_bcachefs_effective_handler,
-#endif
-	NULL
-};
-
-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]	=
-		&nop_posix_acl_access,
-	[KEY_TYPE_XATTR_INDEX_POSIX_ACL_DEFAULT]	=
-		&nop_posix_acl_default,
-	[KEY_TYPE_XATTR_INDEX_TRUSTED]		= &bch_xattr_trusted_handler,
-	[KEY_TYPE_XATTR_INDEX_SECURITY]		= &bch_xattr_security_handler,
-};
-
-static const struct xattr_handler *bch2_xattr_type_to_handler(unsigned type)
-{
-	return type < ARRAY_SIZE(bch_xattr_handler_map)
-		? bch_xattr_handler_map[type]
-		: NULL;
-}