X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libbcachefs%2Finode.h;h=bb759a46dc415a57a4f76119036cb245fd2c645b;hb=fec2d17f20a2fd290a1f85eee0a5e1a1c5e9ddfd;hp=277d4e42aea09c749d6d2f277c776ea55543bd67;hpb=5ec39af8eaba49aee7bafa44c661da39e2f40dc3;p=bcachefs-tools-debian

diff --git a/libbcachefs/inode.h b/libbcachefs/inode.h
index 277d4e4..bb759a4 100644
--- a/libbcachefs/inode.h
+++ b/libbcachefs/inode.h
@@ -1,57 +1,177 @@
-#ifndef _BCACHE_INODE_H
-#define _BCACHE_INODE_H
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _BCACHEFS_INODE_H
+#define _BCACHEFS_INODE_H
 
-#include <linux/math64.h>
+#include "opts.h"
 
-extern const struct bkey_ops bch2_bkey_inode_ops;
+extern const char * const bch2_inode_opts[];
+
+const char *bch2_inode_invalid(const struct bch_fs *, struct bkey_s_c);
+void bch2_inode_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
+
+#define bch2_bkey_ops_inode (struct bkey_ops) {		\
+	.key_invalid	= bch2_inode_invalid,		\
+	.val_to_text	= bch2_inode_to_text,		\
+}
+
+const char *bch2_inode_generation_invalid(const struct bch_fs *,
+					  struct bkey_s_c);
+void bch2_inode_generation_to_text(struct printbuf *, struct bch_fs *,
+				   struct bkey_s_c);
+
+#define bch2_bkey_ops_inode_generation (struct bkey_ops) {	\
+	.key_invalid	= bch2_inode_generation_invalid,	\
+	.val_to_text	= bch2_inode_generation_to_text,	\
+}
 
 struct bch_inode_unpacked {
-	u64			inum;
-	__le64			i_hash_seed;
-	u32			i_flags;
-	u16			i_mode;
+	u64			bi_inum;
+	__le64			bi_hash_seed;
+	u32			bi_flags;
+	u16			bi_mode;
 
-#define BCH_INODE_FIELD(_name, _bits)	u##_bits _name;
+#define x(_name, _bits)	u##_bits _name;
 	BCH_INODE_FIELDS()
-#undef  BCH_INODE_FIELD
+#undef  x
 };
 
 struct bkey_inode_buf {
 	struct bkey_i_inode	inode;
 
-#define BCH_INODE_FIELD(_name, _bits)		+ 8 + _bits / 8
+#define x(_name, _bits)		+ 8 + _bits / 8
 	u8		_pad[0 + BCH_INODE_FIELDS()];
-#undef  BCH_INODE_FIELD
-} __packed;
+#undef  x
+} __attribute__((packed, aligned(8)));
 
 void bch2_inode_pack(struct bkey_inode_buf *, const struct bch_inode_unpacked *);
 int bch2_inode_unpack(struct bkey_s_c_inode, struct bch_inode_unpacked *);
 
+struct btree_iter *bch2_inode_peek(struct btree_trans *,
+			struct bch_inode_unpacked *, u64, unsigned);
+int bch2_inode_write(struct btree_trans *, struct btree_iter *,
+		     struct bch_inode_unpacked *);
+
+void bch2_inode_init_early(struct bch_fs *,
+			   struct bch_inode_unpacked *);
+void bch2_inode_init_late(struct bch_inode_unpacked *, u64,
+			  uid_t, gid_t, umode_t, dev_t,
+			  struct bch_inode_unpacked *);
 void bch2_inode_init(struct bch_fs *, struct bch_inode_unpacked *,
-		    uid_t, gid_t, umode_t, dev_t);
-int bch2_inode_create(struct bch_fs *, struct bkey_i *, u64, u64, u64 *);
-int bch2_inode_truncate(struct bch_fs *, u64, u64,
-		       struct extent_insert_hook *, u64 *);
+		     uid_t, gid_t, umode_t, dev_t,
+		     struct bch_inode_unpacked *);
+
+int bch2_inode_create(struct btree_trans *,
+		      struct bch_inode_unpacked *,
+		      u64, u64, u64 *);
+
 int bch2_inode_rm(struct bch_fs *, u64);
 
-int bch2_inode_find_by_inum(struct bch_fs *, u64,
-			   struct bch_inode_unpacked *);
-int bch2_cached_dev_inode_find_by_uuid(struct bch_fs *, uuid_le *,
-				      struct bkey_i_inode_blockdev *);
+int bch2_inode_find_by_inum_trans(struct btree_trans *, u64,
+				  struct bch_inode_unpacked *);
+int bch2_inode_find_by_inum(struct bch_fs *, u64, struct bch_inode_unpacked *);
 
-static inline struct timespec bch2_time_to_timespec(struct bch_fs *c, u64 time)
+static inline struct bch_io_opts bch2_inode_opts_get(struct bch_inode_unpacked *inode)
 {
-	return ns_to_timespec(time * c->sb.time_precision + c->sb.time_base_lo);
+	struct bch_io_opts ret = { 0 };
+
+#define x(_name, _bits)					\
+	if (inode->bi_##_name)						\
+		opt_set(ret, _name, inode->bi_##_name - 1);
+	BCH_INODE_OPTS()
+#undef x
+	return ret;
 }
 
-static inline u64 timespec_to_bch2_time(struct bch_fs *c, struct timespec ts)
+static inline void bch2_inode_opt_set(struct bch_inode_unpacked *inode,
+				      enum inode_opt_id id, u64 v)
 {
-	s64 ns = timespec_to_ns(&ts) - c->sb.time_base_lo;
+	switch (id) {
+#define x(_name, ...)							\
+	case Inode_opt_##_name:						\
+		inode->bi_##_name = v;					\
+		break;
+	BCH_INODE_OPTS()
+#undef x
+	default:
+		BUG();
+	}
+}
 
-	if (c->sb.time_precision == 1)
-		return ns;
+static inline u64 bch2_inode_opt_get(struct bch_inode_unpacked *inode,
+				     enum inode_opt_id id)
+{
+	switch (id) {
+#define x(_name, ...)							\
+	case Inode_opt_##_name:						\
+		return inode->bi_##_name;
+	BCH_INODE_OPTS()
+#undef x
+	default:
+		BUG();
+	}
+}
 
-	return div_s64(ns, c->sb.time_precision);
+static inline struct bch_io_opts
+io_opts(struct bch_fs *c, struct bch_inode_unpacked *inode)
+{
+	struct bch_io_opts opts = bch2_opts_to_inode_opts(c->opts);
+
+	bch2_io_opts_apply(&opts, bch2_inode_opts_get(inode));
+	return opts;
 }
 
+static inline u8 mode_to_type(umode_t mode)
+{
+	return (mode >> 12) & 15;
+}
+
+/* i_nlink: */
+
+static inline unsigned nlink_bias(umode_t mode)
+{
+	return S_ISDIR(mode) ? 2 : 1;
+}
+
+static inline void bch2_inode_nlink_inc(struct bch_inode_unpacked *bi)
+{
+	if (bi->bi_flags & BCH_INODE_UNLINKED)
+		bi->bi_flags &= ~BCH_INODE_UNLINKED;
+	else
+		bi->bi_nlink++;
+}
+
+static inline void bch2_inode_nlink_dec(struct bch_inode_unpacked *bi)
+{
+	BUG_ON(bi->bi_flags & BCH_INODE_UNLINKED);
+	if (bi->bi_nlink)
+		bi->bi_nlink--;
+	else
+		bi->bi_flags |= BCH_INODE_UNLINKED;
+}
+
+static inline unsigned bch2_inode_nlink_get(struct bch_inode_unpacked *bi)
+{
+	return bi->bi_flags & BCH_INODE_UNLINKED
+		  ? 0
+		  : bi->bi_nlink + nlink_bias(bi->bi_mode);
+}
+
+static inline void bch2_inode_nlink_set(struct bch_inode_unpacked *bi,
+					unsigned nlink)
+{
+	if (nlink) {
+		bi->bi_nlink = nlink - nlink_bias(bi->bi_mode);
+		bi->bi_flags &= ~BCH_INODE_UNLINKED;
+	} else {
+		bi->bi_nlink = 0;
+		bi->bi_flags |= BCH_INODE_UNLINKED;
+	}
+}
+
+#ifdef CONFIG_BCACHEFS_DEBUG
+void bch2_inode_pack_test(void);
+#else
+static inline void bch2_inode_pack_test(void) {}
 #endif
+
+#endif /* _BCACHEFS_INODE_H */