diff options
Diffstat (limited to 'sys/fs/hpfs/hpfs_lookup.c')
| -rw-r--r-- | sys/fs/hpfs/hpfs_lookup.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/sys/fs/hpfs/hpfs_lookup.c b/sys/fs/hpfs/hpfs_lookup.c new file mode 100644 index 0000000..53fde4d --- /dev/null +++ b/sys/fs/hpfs/hpfs_lookup.c @@ -0,0 +1,212 @@ +/*- + * Copyright (c) 1998, 1999 Semen Ustimenko (semenu@FreeBSD.org) + * 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. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 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. + * + * $FreeBSD$ + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/proc.h> +#include <sys/time.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/vnode.h> +#include <sys/mount.h> +#include <sys/namei.h> +#include <sys/malloc.h> +#include <sys/buf.h> + +#include <fs/hpfs/hpfs.h> +#include <fs/hpfs/hpfsmount.h> +#include <fs/hpfs/hpfs_subr.h> + +int hpfs_removedirent (struct hpfsmount *, lsn_t, char *, int, int *); + +/* + * This routine traverse the b+ tree representing directory + * looking for file named 'name'. Returns buf struct and hpfsdirent + * pointer. Calling routine is supposed to brelse buffer. + * name is supposed in Unix encodeing. + */ +int +hpfs_genlookupbyname ( + struct hpfsnode *dhp, + char *name, + int namelen, + struct buf **bpp, + struct hpfsdirent **depp) +{ + struct hpfsmount *hpmp = dhp->h_hpmp; + struct buf *bp; + struct dirblk *dp; + struct hpfsdirent *dep; + lsn_t lsn; + int error, res; + + dprintf(("hpfs_genlookupbyname(0x%x, %s (%d)): \n", + dhp->h_no, name, namelen)); + + lsn = ((alleaf_t *)dhp->h_fn.fn_abd)->al_lsn; +dive: + error = hpfs_breaddirblk (hpmp, lsn, &bp); + if (error) + return (error); + + dp = (struct dirblk *) bp->b_data; + dep = D_DIRENT(dp); + + while(!(dep->de_flag & DE_END)) { + dprintf(("no: 0x%x, size: %d, name: %2d:%.*s, flag: 0x%x\n", + dep->de_fnode, dep->de_size, dep->de_namelen, + dep->de_namelen, dep->de_name, dep->de_flag)); + + res = hpfs_cmpfname(hpmp, name, namelen, + dep->de_name, dep->de_namelen, dep->de_cpid); + if (res == 0) { + *bpp = bp; + *depp = dep; + return (0); + } else if (res < 0) + break; + + dep = (hpfsdirent_t *)(((caddr_t)dep) + dep->de_reclen); + } + + if (dep->de_flag & DE_DOWN) { + lsn = DE_DOWNLSN(dep); + brelse(bp); + goto dive; + } + + brelse(bp); + + return (ENOENT); +} + +int +hpfs_makefnode ( + struct vnode * dvp, + struct vnode ** vpp, + struct componentname *cnp, + struct vattr *vap) +{ +#ifdef HPFS_DEBUG + register struct hpfsnode *dhp = VTOHP(dvp); + dprintf(("hpfs_makefnode(0x%x, %s, %ld): \n", + dhp->h_no, cnp->cn_nameptr, cnp->cn_namelen)); +#endif + + return (EOPNOTSUPP); +} + +int +hpfs_removedirent ( + struct hpfsmount *hpmp, + lsn_t lsn, + char *name, + int namelen, + int *retp) +{ +#if 0 + struct buf *bp; + dirblk_t *dbp; + struct hpfsdirent *dep; + int deoff; + int error, ret; + + dprintf(("hpfs_removedirent(0x%x, %.*s, %d): \n", + lsn, namelen, name, namelen)); + + error = hpfs_breaddirblk (hpmp, lsn, &bp); + if (error) + return (error); + + dbp = (dirblk_t *) bp->b_data; + deoff = sizeof(dirblk_t); + dep = DB_DIRENT(dbp); + + while(!(dep->de_flag & DE_END)) { + dprintf(("no: 0x%x, size: %d, name: %2d:%.*s, flag: 0x%x\n", + dep->de_fnode, dep->de_size, dep->de_namelen, + dep->de_namelen, dep->de_name, dep->de_flag)); + + res = hpfs_cmpfname(hpmp, name, namelen, + dep->de_name, dep->de_namelen, dep->de_cpid); + if (res == 0) { + if (dep->de_flag & DE_DOWN) { + /*XXXXXX*/ + } else { + /* XXX we can copy less */ + bcopy (DE_NEXTDE(dep), dep, DB_BSIZE - deoff - dep->de_reclen); + dbp->d_freeoff -= dep->de_reclen; + *retp = 0; + } + bdwrite (bp); + return (0); + } else if (res < 0) + break; + + deoff += dep->de_reclen; + dep = DB_NEXTDE(dep); + } + + if (dep->de_flag & DE_DOWN) { + error = hpfs_removede (hpmp, DE_DOWNLSN(dep), name, namelen, &ret); + if (error) { + brelse (bp); + return (error); + } + if (ret == 0) { + if (deoff > sizeof (dirblk_t)) { + } else if (deoff + dep->de_reclen < dbp->db_freeoff) { + } + } + } else { + error = ENOENT; + } + + brelse (bp); + return (error); +#endif + return (EOPNOTSUPP); +} + +int +hpfs_removefnode ( + struct vnode * dvp, + struct vnode * vp, + struct componentname *cnp) +{ +#ifdef HPFS_DEBUG + register struct hpfsnode *dhp = VTOHP(dvp); + register struct hpfsnode *hp = VTOHP(vp); + dprintf(("hpfs_removefnode(0x%x, 0x%x, %s, %ld): \n", + dhp->h_no, hp->h_no, cnp->cn_nameptr, cnp->cn_namelen)); +#endif + + + return (EOPNOTSUPP); +} |
