65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Functions to handle the cached directory entries
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*
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* Copyright (c) 2022, Ronnie Sahlberg <lsahlber@redhat.com>
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*/
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#ifndef _CACHED_DIR_H
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#define _CACHED_DIR_H
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struct cached_dirent {
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struct list_head entry;
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char *name;
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int namelen;
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loff_t pos;
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struct cifs_fattr fattr;
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};
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struct cached_dirents {
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bool is_valid:1;
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bool is_failed:1;
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struct dir_context *ctx; /*
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* Only used to make sure we only take entries
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* from a single context. Never dereferenced.
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*/
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struct mutex de_mutex;
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int pos; /* Expected ctx->pos */
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struct list_head entries;
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};
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struct cached_fid {
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bool is_valid:1; /* Do we have a useable root fid */
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bool file_all_info_is_valid:1;
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bool has_lease:1;
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unsigned long time; /* jiffies of when lease was taken */
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struct kref refcount;
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struct cifs_fid fid;
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struct mutex fid_mutex;
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struct cifs_tcon *tcon;
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struct dentry *dentry;
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struct work_struct lease_break;
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struct smb2_file_all_info file_all_info;
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struct cached_dirents dirents;
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};
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extern struct cached_fid *init_cached_dir(void);
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extern void free_cached_dir(struct cifs_tcon *tcon);
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extern int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon,
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const char *path,
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struct cifs_sb_info *cifs_sb,
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bool lookup_only, struct cached_fid **cfid);
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extern int open_cached_dir_by_dentry(struct cifs_tcon *tcon,
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struct dentry *dentry,
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struct cached_fid **cfid);
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extern void close_cached_dir(struct cached_fid *cfid);
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extern void close_cached_dir_lease(struct cached_fid *cfid);
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extern void close_cached_dir_lease_locked(struct cached_fid *cfid);
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extern void close_all_cached_dirs(struct cifs_sb_info *cifs_sb);
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extern void invalidate_all_cached_dirs(struct cifs_tcon *tcon);
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extern int cached_dir_lease_break(struct cifs_tcon *tcon, __u8 lease_key[16]);
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#endif /* _CACHED_DIR_H */
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