cregit-Linux how code gets into the kernel

Release 4.10 fs/gfs2/dir.h

Directory: fs/gfs2
 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU General Public License version 2.

#ifndef __DIR_DOT_H__

#define __DIR_DOT_H__

#include <linux/dcache.h>
#include <linux/crc32.h>

struct inode;
struct gfs2_inode;
struct gfs2_inum;
struct buffer_head;
struct gfs2_dirent;

struct gfs2_diradd {
unsigned nr_blocks;
struct gfs2_dirent *dent;
struct buffer_head *bh;
int save_loc;

extern struct inode *gfs2_dir_search(struct inode *dir,
				     const struct qstr *filename,
				     bool fail_on_exist);
extern int gfs2_dir_check(struct inode *dir, const struct qstr *filename,
			  const struct gfs2_inode *ip);
extern int gfs2_dir_add(struct inode *inode, const struct qstr *filename,
			const struct gfs2_inode *ip, struct gfs2_diradd *da);

static inline void gfs2_dir_no_add(struct gfs2_diradd *da) { if (da->bh) brelse(da->bh); da->bh = NULL; }


steven whitehousesteven whitehouse31100.00%1100.00%

extern int gfs2_dir_del(struct gfs2_inode *dip, const struct dentry *dentry); extern int gfs2_dir_read(struct inode *inode, struct dir_context *ctx, struct file_ra_state *f_ra); extern int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename, const struct gfs2_inode *nip, unsigned int new_type); extern int gfs2_dir_exhash_dealloc(struct gfs2_inode *dip); extern int gfs2_diradd_alloc_required(struct inode *dir, const struct qstr *filename, struct gfs2_diradd *da); extern int gfs2_dir_get_new_buffer(struct gfs2_inode *ip, u64 block, struct buffer_head **bhp); extern void gfs2_dir_hash_inval(struct gfs2_inode *ip);
static inline u32 gfs2_disk_hash(const char *data, int len) { return crc32_le((u32)~0, data, len) ^ (u32)~0; }


steven whitehousesteven whitehouse35100.00%3100.00%

static inline void gfs2_str2qstr(struct qstr *name, const char *fname) { name->name = fname; name->len = strlen(fname); name->hash = gfs2_disk_hash(name->name, name->len); }


steven whitehousesteven whitehouse47100.00%1100.00%

/* N.B. This probably ought to take inum & type as args as well */
static inline void gfs2_qstr2dirent(const struct qstr *name, u16 reclen, struct gfs2_dirent *dent) { dent->de_inum.no_addr = cpu_to_be64(0); dent->de_inum.no_formal_ino = cpu_to_be64(0); dent->de_hash = cpu_to_be32(name->hash); dent->de_rec_len = cpu_to_be16(reclen); dent->de_name_len = cpu_to_be16(name->len); dent->de_type = cpu_to_be16(0); memset(dent->__pad, 0, sizeof(dent->__pad)); memcpy(dent + 1, name->name, name->len); }


steven whitehousesteven whitehouse114100.00%1100.00%

extern struct qstr gfs2_qdot; extern struct qstr gfs2_qdotdot; #endif /* __DIR_DOT_H__ */

Overall Contributors

steven whitehousesteven whitehouse36876.35%1680.00%
david teiglanddavid teigland10321.37%15.00%
robert s. petersonrobert s. peterson81.66%210.00%
al viroal viro30.62%15.00%
Directory: fs/gfs2
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