cregit-Linux how code gets into the kernel

Release 4.10 fs/gfs2/dentry.c

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.

#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/buffer_head.h>
#include <linux/gfs2_ondisk.h>
#include <linux/namei.h>
#include <linux/crc32.h>

#include "gfs2.h"
#include "incore.h"
#include "dir.h"
#include "glock.h"
#include "super.h"
#include "util.h"
#include "inode.h"

 * gfs2_drevalidate - Check directory lookup consistency
 * @dentry: the mapping to check
 * @flags: lookup flags
 * Check to make sure the lookup necessary to arrive at this inode from its
 * parent is still good.
 * Returns: 1 if the dentry is ok, 0 if it isn't

static int gfs2_drevalidate(struct dentry *dentry, unsigned int flags) { struct dentry *parent; struct gfs2_sbd *sdp; struct gfs2_inode *dip; struct inode *inode; struct gfs2_holder d_gh; struct gfs2_inode *ip = NULL; int error; int had_lock = 0; if (flags & LOOKUP_RCU) return -ECHILD; parent = dget_parent(dentry); sdp = GFS2_SB(d_inode(parent)); dip = GFS2_I(d_inode(parent)); inode = d_inode(dentry); if (inode) { if (is_bad_inode(inode)) goto invalid; ip = GFS2_I(inode); } if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) goto valid; had_lock = (gfs2_glock_is_locked_by_me(dip->i_gl) != NULL); if (!had_lock) { error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh); if (error) goto fail; } error = gfs2_dir_check(d_inode(parent), &dentry->d_name, ip); switch (error) { case 0: if (!inode) goto invalid_gunlock; break; case -ENOENT: if (!inode) goto valid_gunlock; goto invalid_gunlock; default: goto fail_gunlock; } valid_gunlock: if (!had_lock) gfs2_glock_dq_uninit(&d_gh); valid: dput(parent); return 1; invalid_gunlock: if (!had_lock) gfs2_glock_dq_uninit(&d_gh); invalid: dput(parent); return 0; fail_gunlock: gfs2_glock_dq_uninit(&d_gh); fail: dput(parent); return 0; }


david teiglanddavid teigland17558.92%111.11%
steven whitehousesteven whitehouse4113.80%444.44%
nick pigginnick piggin3511.78%111.11%
wendy chengwendy cheng3110.44%111.11%
david howellsdavid howells124.04%111.11%
al viroal viro31.01%111.11%

static int gfs2_dhash(const struct dentry *dentry, struct qstr *str) { str->hash = gfs2_disk_hash(str->name, str->len); return 0; }


steven whitehousesteven whitehouse3497.14%150.00%
nick pigginnick piggin12.86%150.00%

static int gfs2_dentry_delete(const struct dentry *dentry) { struct gfs2_inode *ginode; if (d_really_is_negative(dentry)) return 0; ginode = GFS2_I(d_inode(dentry)); if (!gfs2_holder_initialized(&ginode->i_iopen_gh)) return 0; if (test_bit(GLF_DEMOTE, &ginode->i_iopen_gh.gh_gl->gl_flags)) return 1; return 0; }


wengang wangwengang wang6284.93%125.00%
david howellsdavid howells68.22%125.00%
andreas gruenbacherandreas gruenbacher45.48%125.00%
nick pigginnick piggin11.37%125.00%

const struct dentry_operations gfs2_dops = { .d_revalidate = gfs2_drevalidate, .d_hash = gfs2_dhash, .d_delete = gfs2_dentry_delete, };

Overall Contributors

david teiglanddavid teigland20343.38%15.26%
steven whitehousesteven whitehouse9921.15%842.11%
wengang wangwengang wang6714.32%15.26%
nick pigginnick piggin408.55%315.79%
wendy chengwendy cheng316.62%15.26%
david howellsdavid howells183.85%15.26%
al viroal viro51.07%210.53%
andreas gruenbacherandreas gruenbacher40.85%15.26%
fabio massimo di nittofabio massimo di nitto10.21%15.26%
Directory: fs/gfs2
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