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7d4db05445
Add a lookup variant that returns an error if the item value is larger than the caller's value buffer size and which zeros the rest of the caller's buffer if the returned value is smaller. Signed-off-by: Zach Brown <zab@versity.com>
43 lines
2.0 KiB
C
43 lines
2.0 KiB
C
#ifndef _SCOUTFS_ITEM_H_
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#define _SCOUTFS_ITEM_H_
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int scoutfs_item_lookup(struct super_block *sb, struct scoutfs_key *key,
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void *val, int val_len, struct scoutfs_lock *lock);
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int scoutfs_item_lookup_smaller_zero(struct super_block *sb, struct scoutfs_key *key,
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void *val, int val_len, struct scoutfs_lock *lock);
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int scoutfs_item_lookup_exact(struct super_block *sb, struct scoutfs_key *key,
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void *val, int val_len,
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struct scoutfs_lock *lock);
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int scoutfs_item_next(struct super_block *sb, struct scoutfs_key *key,
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struct scoutfs_key *last, void *val, int val_len,
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struct scoutfs_lock *lock);
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int scoutfs_item_dirty(struct super_block *sb, struct scoutfs_key *key,
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struct scoutfs_lock *lock);
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int scoutfs_item_create(struct super_block *sb, struct scoutfs_key *key,
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void *val, int val_len, struct scoutfs_lock *lock);
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int scoutfs_item_create_force(struct super_block *sb, struct scoutfs_key *key,
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void *val, int val_len,
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struct scoutfs_lock *lock, struct scoutfs_lock *primary);
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int scoutfs_item_update(struct super_block *sb, struct scoutfs_key *key,
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void *val, int val_len, struct scoutfs_lock *lock);
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int scoutfs_item_delta(struct super_block *sb, struct scoutfs_key *key,
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void *val, int val_len, struct scoutfs_lock *lock);
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int scoutfs_item_delete(struct super_block *sb, struct scoutfs_key *key,
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struct scoutfs_lock *lock);
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int scoutfs_item_delete_force(struct super_block *sb, struct scoutfs_key *key,
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struct scoutfs_lock *lock, struct scoutfs_lock *primary);
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u64 scoutfs_item_dirty_pages(struct super_block *sb);
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int scoutfs_item_write_dirty(struct super_block *sb);
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int scoutfs_item_write_done(struct super_block *sb);
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bool scoutfs_item_range_cached(struct super_block *sb,
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struct scoutfs_key *start,
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struct scoutfs_key *end, bool *dirty);
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void scoutfs_item_invalidate(struct super_block *sb, struct scoutfs_key *start,
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struct scoutfs_key *end);
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int scoutfs_item_setup(struct super_block *sb);
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void scoutfs_item_destroy(struct super_block *sb);
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#endif
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