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e9fc2aa091
As per comments from Jan Engelhardt <jengelh@linux01.gwdg.de> this updates the copyright message to say "version" in full rather than "v.2". Also incore.h has been updated to remove forward structure declarations which are not required. The gfs2_quota_lvb structure has now had endianess annotations added to it. Also quota.c has been updated so that we now store the lvb data locally in endian independant format to avoid needing a structure in host endianess too. As a result the endianess conversions are done as required at various points and thus the conversion routines in lvb.[ch] are no longer required. I've moved the one remaining constant in lvb.h thats used into lm.h and removed the unused lvb.[ch]. I have not changed the HIF_ constants. That is left to a later patch which I hope will unify the gh_flags and gh_iflags fields of the struct gfs2_holder. Cc: Jan Engelhardt <jengelh@linux01.gwdg.de> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
74 lines
2.5 KiB
C
74 lines
2.5 KiB
C
/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License version 2.
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*/
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#ifndef __DIR_DOT_H__
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#define __DIR_DOT_H__
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/**
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* gfs2_filldir_t - Report a directory entry to the caller of gfs2_dir_read()
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* @opaque: opaque data used by the function
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* @name: the name of the directory entry
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* @length: the length of the name
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* @offset: the entry's offset in the directory
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* @inum: the inode number the entry points to
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* @type: the type of inode the entry points to
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*
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* Returns: 0 on success, 1 if buffer full
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*/
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typedef int (*gfs2_filldir_t) (void *opaque,
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const char *name, unsigned int length,
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uint64_t offset,
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struct gfs2_inum *inum, unsigned int type);
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int gfs2_dir_search(struct inode *dir, const struct qstr *filename,
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struct gfs2_inum *inum, unsigned int *type);
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int gfs2_dir_add(struct inode *inode, const struct qstr *filename,
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const struct gfs2_inum *inum, unsigned int type);
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int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *filename);
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int gfs2_dir_read(struct inode *inode, uint64_t * offset, void *opaque,
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gfs2_filldir_t filldir);
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int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
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struct gfs2_inum *new_inum, unsigned int new_type);
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int gfs2_dir_exhash_dealloc(struct gfs2_inode *dip);
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int gfs2_diradd_alloc_required(struct inode *dir,
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const struct qstr *filename);
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int gfs2_dir_get_new_buffer(struct gfs2_inode *ip, uint64_t block,
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struct buffer_head **bhp);
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static inline uint32_t gfs2_disk_hash(const char *data, int len)
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{
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return crc32_le(0xFFFFFFFF, data, len) ^ 0xFFFFFFFF;
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}
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static inline void gfs2_str2qstr(struct qstr *name, const char *fname)
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{
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name->name = fname;
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name->len = strlen(fname);
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name->hash = gfs2_disk_hash(name->name, name->len);
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}
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/* N.B. This probably ought to take inum & type as args as well */
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static inline void gfs2_qstr2dirent(const struct qstr *name, u16 reclen, struct gfs2_dirent *dent)
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{
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dent->de_inum.no_addr = cpu_to_be64(0);
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dent->de_inum.no_formal_ino = cpu_to_be64(0);
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dent->de_hash = cpu_to_be32(name->hash);
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dent->de_rec_len = cpu_to_be16(reclen);
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dent->de_name_len = cpu_to_be16(name->len);
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dent->de_type = cpu_to_be16(0);
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memset(dent->__pad, 0, sizeof(dent->__pad));
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memcpy((char*)(dent+1), name->name, name->len);
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}
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#endif /* __DIR_DOT_H__ */
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