105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
/*
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* Copyright (C) 2005-2014 Junjiro R. Okajima
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*
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* This program, aufs is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* module initialization and module-global
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*/
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#ifndef __AUFS_MODULE_H__
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#define __AUFS_MODULE_H__
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#ifdef __KERNEL__
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#include <linux/slab.h>
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struct path;
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struct seq_file;
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/* module parameters */
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extern int sysaufs_brs;
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/* ---------------------------------------------------------------------- */
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extern int au_dir_roflags;
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enum {
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AuLcNonDir_FIINFO,
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AuLcNonDir_DIINFO,
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AuLcNonDir_IIINFO,
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AuLcDir_FIINFO,
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AuLcDir_DIINFO,
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AuLcDir_IIINFO,
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AuLcSymlink_DIINFO,
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AuLcSymlink_IIINFO,
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AuLcKey_Last
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};
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extern struct lock_class_key au_lc_key[AuLcKey_Last];
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void *au_kzrealloc(void *p, unsigned int nused, unsigned int new_sz, gfp_t gfp);
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int au_seq_path(struct seq_file *seq, struct path *path);
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#ifdef CONFIG_PROC_FS
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/* procfs.c */
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int __init au_procfs_init(void);
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void au_procfs_fin(void);
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#else
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AuStubInt0(au_procfs_init, void);
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AuStubVoid(au_procfs_fin, void);
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#endif
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/* ---------------------------------------------------------------------- */
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/* kmem cache */
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enum {
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AuCache_DINFO,
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AuCache_ICNTNR,
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AuCache_FINFO,
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AuCache_VDIR,
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AuCache_DEHSTR,
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AuCache_HNOTIFY, /* must be last */
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AuCache_Last
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};
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#define AuCacheFlags (SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD)
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#define AuCache(type) KMEM_CACHE(type, AuCacheFlags)
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#define AuCacheCtor(type, ctor) \
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kmem_cache_create(#type, sizeof(struct type), \
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__alignof__(struct type), AuCacheFlags, ctor)
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extern struct kmem_cache *au_cachep[];
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#define AuCacheFuncs(name, index) \
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static inline struct au_##name *au_cache_alloc_##name(void) \
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{ return kmem_cache_alloc(au_cachep[AuCache_##index], GFP_NOFS); } \
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static inline void au_cache_free_##name(struct au_##name *p) \
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{ kmem_cache_free(au_cachep[AuCache_##index], p); }
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AuCacheFuncs(dinfo, DINFO);
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AuCacheFuncs(icntnr, ICNTNR);
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AuCacheFuncs(finfo, FINFO);
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AuCacheFuncs(vdir, VDIR);
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AuCacheFuncs(vdir_dehstr, DEHSTR);
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#ifdef CONFIG_AUFS_HNOTIFY
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AuCacheFuncs(hnotify, HNOTIFY);
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#endif
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#endif /* __KERNEL__ */
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#endif /* __AUFS_MODULE_H__ */
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