cregit-Linux how code gets into the kernel

Release 4.11 fs/freevxfs/vxfs_fshead.c

Directory: fs/freevxfs
/*
 * Copyright (c) 2000-2001 Christoph Hellwig.
 * Copyright (c) 2016 Krzysztof Blaszkowski
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL").
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * Veritas filesystem driver - fileset header routines.
 */
#include <linux/fs.h>
#include <linux/buffer_head.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/string.h>

#include "vxfs.h"
#include "vxfs_inode.h"
#include "vxfs_extern.h"
#include "vxfs_fshead.h"


#ifdef DIAGNOSTIC

static void vxfs_dumpfsh(struct vxfs_fsh *fhp) { printk("\n\ndumping fileset header:\n"); printk("----------------------------\n"); printk("version: %u\n", fhp->fsh_version); printk("fsindex: %u\n", fhp->fsh_fsindex); printk("iauino: %u\tninodes:%u\n", fhp->fsh_iauino, fhp->fsh_ninodes); printk("maxinode: %u\tlctino: %u\n", fhp->fsh_maxinode, fhp->fsh_lctino); printk("nau: %u\n", fhp->fsh_nau); printk("ilistino[0]: %u\tilistino[1]: %u\n", fhp->fsh_ilistino[0], fhp->fsh_ilistino[1]); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds93100.00%1100.00%
Total93100.00%1100.00%

#endif /** * vxfs_getfsh - read fileset header into memory * @ip: the (fake) fileset header inode * @which: 0 for the structural, 1 for the primary fsh. * * Description: * vxfs_getfsh reads either the structural or primary fileset header * described by @ip into memory. * * Returns: * The fileset header structure on success, else Zero. */
static struct vxfs_fsh * vxfs_getfsh(struct inode *ip, int which) { struct buffer_head *bp; bp = vxfs_bread(ip, which); if (bp) { struct vxfs_fsh *fhp; if (!(fhp = kmalloc(sizeof(*fhp), GFP_KERNEL))) goto out; memcpy(fhp, bp->b_data, sizeof(*fhp)); put_bh(bp); return (fhp); } out: brelse(bp); return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds8587.63%266.67%
Pekka J Enberg1212.37%133.33%
Total97100.00%3100.00%

/** * vxfs_read_fshead - read the fileset headers * @sbp: superblock to which the fileset belongs * * Description: * vxfs_read_fshead will fill the inode and structural inode list in @sb. * * Returns: * Zero on success, else a negative error code (-EINVAL). */
int vxfs_read_fshead(struct super_block *sbp) { struct vxfs_sb_info *infp = VXFS_SBI(sbp); struct vxfs_fsh *pfp, *sfp; struct vxfs_inode_info *vip; infp->vsi_fship = vxfs_blkiget(sbp, infp->vsi_iext, infp->vsi_fshino); if (!infp->vsi_fship) { printk(KERN_ERR "vxfs: unable to read fsh inode\n"); return -EINVAL; } vip = VXFS_INO(infp->vsi_fship); if (!VXFS_ISFSH(vip)) { printk(KERN_ERR "vxfs: fsh list inode is of wrong type (%x)\n", vip->vii_mode & VXFS_TYPE_MASK); goto out_iput_fship; } #ifdef DIAGNOSTIC printk("vxfs: fsh inode dump:\n"); vxfs_dumpi(vip, infp->vsi_fshino); #endif sfp = vxfs_getfsh(infp->vsi_fship, 0); if (!sfp) { printk(KERN_ERR "vxfs: unable to get structural fsh\n"); goto out_iput_fship; } #ifdef DIAGNOSTIC vxfs_dumpfsh(sfp); #endif pfp = vxfs_getfsh(infp->vsi_fship, 1); if (!pfp) { printk(KERN_ERR "vxfs: unable to get primary fsh\n"); goto out_free_sfp; } #ifdef DIAGNOSTIC vxfs_dumpfsh(pfp); #endif infp->vsi_stilist = vxfs_blkiget(sbp, infp->vsi_iext, fs32_to_cpu(infp, sfp->fsh_ilistino[0])); if (!infp->vsi_stilist) { printk(KERN_ERR "vxfs: unable to get structural list inode\n"); goto out_free_pfp; } if (!VXFS_ISILT(VXFS_INO(infp->vsi_stilist))) { printk(KERN_ERR "vxfs: structural list inode is of wrong type (%x)\n", VXFS_INO(infp->vsi_stilist)->vii_mode & VXFS_TYPE_MASK); goto out_iput_stilist; } infp->vsi_ilist = vxfs_stiget(sbp, fs32_to_cpu(infp, pfp->fsh_ilistino[0])); if (!infp->vsi_ilist) { printk(KERN_ERR "vxfs: unable to get inode list inode\n"); goto out_iput_stilist; } if (!VXFS_ISILT(VXFS_INO(infp->vsi_ilist))) { printk(KERN_ERR "vxfs: inode list inode is of wrong type (%x)\n", VXFS_INO(infp->vsi_ilist)->vii_mode & VXFS_TYPE_MASK); goto out_iput_ilist; } kfree(pfp); kfree(sfp); return 0; out_iput_ilist: iput(infp->vsi_ilist); out_iput_stilist: iput(infp->vsi_stilist); out_free_pfp: kfree(pfp); out_free_sfp: kfree(sfp); out_iput_fship: iput(infp->vsi_fship); return -EINVAL; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds27367.24%114.29%
Christoph Hellwig8520.94%114.29%
Krzysztof Błaszkowski4210.34%342.86%
Cliff Wickman51.23%114.29%
Lucas De Marchi10.25%114.29%
Total406100.00%7100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds48075.95%216.67%
Christoph Hellwig9114.40%325.00%
Krzysztof Błaszkowski436.80%433.33%
Pekka J Enberg121.90%18.33%
Cliff Wickman50.79%18.33%
Lucas De Marchi10.16%18.33%
Total632100.00%12100.00%
Directory: fs/freevxfs
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