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62 |
marcus.erl |
/*
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| 2 |
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* namei.c
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*
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* PURPOSE
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* Inode name handling routines for the OSTA-UDF(tm) filesystem.
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*
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* COPYRIGHT
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* This file is distributed under the terms of the GNU General Public
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* License (GPL). Copies of the GPL can be obtained from:
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* ftp://prep.ai.mit.edu/pub/gnu/GPL
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* Each contributing author retains all rights to their own work.
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*
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* (C) 1998-2004 Ben Fennema
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* (C) 1999-2000 Stelias Computing Inc
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*
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* HISTORY
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*
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* 12/12/98 blf Created. Split out the lookup code from dir.c
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* 04/19/99 blf link, mknod, symlink support
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*/
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#include "udfdecl.h"
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#include "udf_i.h"
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#include "udf_sb.h"
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <linux/quotaops.h>
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#include <linux/smp_lock.h>
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#include <linux/buffer_head.h>
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#include <linux/sched.h>
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static inline int udf_match(int len1, const char *name1, int len2,
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const char *name2)
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{
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if (len1 != len2)
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return 0;
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return !memcmp(name1, name2, len1);
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}
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int udf_write_fi(struct inode *inode, struct fileIdentDesc *cfi,
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struct fileIdentDesc *sfi, struct udf_fileident_bh *fibh,
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uint8_t * impuse, uint8_t * fileident)
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{
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uint16_t crclen = fibh->eoffset - fibh->soffset - sizeof(tag);
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uint16_t crc;
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uint8_t checksum = 0;
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int i;
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int offset;
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uint16_t liu = le16_to_cpu(cfi->lengthOfImpUse);
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uint8_t lfi = cfi->lengthFileIdent;
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int padlen = fibh->eoffset - fibh->soffset - liu - lfi -
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sizeof(struct fileIdentDesc);
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int adinicb = 0;
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if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_IN_ICB)
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adinicb = 1;
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offset = fibh->soffset + sizeof(struct fileIdentDesc);
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if (impuse) {
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if (adinicb || (offset + liu < 0)) {
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memcpy((uint8_t *)sfi->impUse, impuse, liu);
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} else if (offset >= 0) {
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memcpy(fibh->ebh->b_data + offset, impuse, liu);
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} else {
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memcpy((uint8_t *)sfi->impUse, impuse, -offset);
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memcpy(fibh->ebh->b_data, impuse - offset, liu + offset);
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}
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}
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offset += liu;
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if (fileident) {
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if (adinicb || (offset + lfi < 0)) {
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memcpy((uint8_t *)sfi->fileIdent + liu, fileident, lfi);
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} else if (offset >= 0) {
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memcpy(fibh->ebh->b_data + offset, fileident, lfi);
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} else {
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memcpy((uint8_t *)sfi->fileIdent + liu, fileident, -offset);
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memcpy(fibh->ebh->b_data, fileident - offset, lfi + offset);
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}
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}
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offset += lfi;
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if (adinicb || (offset + padlen < 0)) {
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memset((uint8_t *)sfi->padding + liu + lfi, 0x00, padlen);
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} else if (offset >= 0) {
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memset(fibh->ebh->b_data + offset, 0x00, padlen);
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} else {
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memset((uint8_t *)sfi->padding + liu + lfi, 0x00, -offset);
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memset(fibh->ebh->b_data, 0x00, padlen + offset);
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}
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crc = udf_crc((uint8_t *)cfi + sizeof(tag),
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sizeof(struct fileIdentDesc) - sizeof(tag), 0);
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| 102 |
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if (fibh->sbh == fibh->ebh) {
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crc = udf_crc((uint8_t *)sfi->impUse,
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crclen + sizeof(tag) - sizeof(struct fileIdentDesc), crc);
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} else if (sizeof(struct fileIdentDesc) >= -fibh->soffset) {
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crc = udf_crc(fibh->ebh->b_data + sizeof(struct fileIdentDesc) + fibh->soffset,
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crclen + sizeof(tag) - sizeof(struct fileIdentDesc), crc);
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} else {
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crc = udf_crc((uint8_t *)sfi->impUse,
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-fibh->soffset - sizeof(struct fileIdentDesc), crc);
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crc = udf_crc(fibh->ebh->b_data, fibh->eoffset, crc);
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| 112 |
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}
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| 114 |
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cfi->descTag.descCRC = cpu_to_le16(crc);
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cfi->descTag.descCRCLength = cpu_to_le16(crclen);
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| 117 |
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for (i = 0; i < 16; i++) {
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if (i != 4)
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checksum += ((uint8_t *)&cfi->descTag)[i];
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}
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| 122 |
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cfi->descTag.tagChecksum = checksum;
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| 123 |
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if (adinicb || (sizeof(struct fileIdentDesc) <= -fibh->soffset)) {
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| 124 |
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memcpy((uint8_t *)sfi, (uint8_t *)cfi, sizeof(struct fileIdentDesc));
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} else {
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memcpy((uint8_t *)sfi, (uint8_t *)cfi, -fibh->soffset);
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memcpy(fibh->ebh->b_data, (uint8_t *)cfi - fibh->soffset,
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sizeof(struct fileIdentDesc) + fibh->soffset);
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| 129 |
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}
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| 131 |
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if (adinicb) {
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| 132 |
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mark_inode_dirty(inode);
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} else {
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if (fibh->sbh != fibh->ebh)
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mark_buffer_dirty_inode(fibh->ebh, inode);
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mark_buffer_dirty_inode(fibh->sbh, inode);
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}
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| 138 |
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return 0;
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| 139 |
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}
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| 141 |
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static struct fileIdentDesc *udf_find_entry(struct inode *dir,
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struct dentry *dentry,
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struct udf_fileident_bh *fibh,
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| 144 |
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struct fileIdentDesc *cfi)
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{
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| 146 |
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struct fileIdentDesc *fi = NULL;
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loff_t f_pos;
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int block, flen;
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char fname[UDF_NAME_LEN];
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| 150 |
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char *nameptr;
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| 151 |
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uint8_t lfi;
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| 152 |
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uint16_t liu;
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| 153 |
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loff_t size;
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| 154 |
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kernel_lb_addr eloc;
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| 155 |
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uint32_t elen;
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| 156 |
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sector_t offset;
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| 157 |
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struct extent_position epos = {};
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| 158 |
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| 159 |
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size = (udf_ext0_offset(dir) + dir->i_size) >> 2;
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| 160 |
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f_pos = (udf_ext0_offset(dir) >> 2);
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| 161 |
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| 162 |
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fibh->soffset = fibh->eoffset = (f_pos & ((dir->i_sb->s_blocksize - 1) >> 2)) << 2;
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if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) {
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| 164 |
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fibh->sbh = fibh->ebh = NULL;
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| 165 |
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} else if (inode_bmap(dir, f_pos >> (dir->i_sb->s_blocksize_bits - 2),
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| 166 |
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&epos, &eloc, &elen, &offset) == (EXT_RECORDED_ALLOCATED >> 30)) {
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| 167 |
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block = udf_get_lb_pblock(dir->i_sb, eloc, offset);
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| 168 |
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if ((++offset << dir->i_sb->s_blocksize_bits) < elen) {
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| 169 |
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if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_SHORT)
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| 170 |
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epos.offset -= sizeof(short_ad);
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| 171 |
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else if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_LONG)
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| 172 |
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epos.offset -= sizeof(long_ad);
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| 173 |
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} else {
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| 174 |
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offset = 0;
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| 175 |
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}
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| 176 |
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| 177 |
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if (!(fibh->sbh = fibh->ebh = udf_tread(dir->i_sb, block))) {
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| 178 |
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brelse(epos.bh);
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| 179 |
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return NULL;
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| 180 |
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}
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| 181 |
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} else {
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| 182 |
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brelse(epos.bh);
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| 183 |
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return NULL;
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| 184 |
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}
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| 185 |
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| 186 |
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while ((f_pos < size)) {
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| 187 |
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fi = udf_fileident_read(dir, &f_pos, fibh, cfi, &epos, &eloc,
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| 188 |
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&elen, &offset);
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| 189 |
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if (!fi) {
|
| 190 |
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if (fibh->sbh != fibh->ebh)
|
| 191 |
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brelse(fibh->ebh);
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| 192 |
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brelse(fibh->sbh);
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| 193 |
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brelse(epos.bh);
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| 194 |
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return NULL;
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| 195 |
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}
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| 196 |
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| 197 |
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liu = le16_to_cpu(cfi->lengthOfImpUse);
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| 198 |
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lfi = cfi->lengthFileIdent;
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| 199 |
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| 200 |
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if (fibh->sbh == fibh->ebh) {
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| 201 |
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nameptr = fi->fileIdent + liu;
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| 202 |
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} else {
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| 203 |
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int poffset; /* Unpaded ending offset */
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| 204 |
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| 205 |
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poffset = fibh->soffset + sizeof(struct fileIdentDesc) + liu + lfi;
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| 206 |
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| 207 |
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if (poffset >= lfi) {
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| 208 |
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nameptr = (uint8_t *)(fibh->ebh->b_data + poffset - lfi);
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| 209 |
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} else {
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| 210 |
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nameptr = fname;
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| 211 |
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memcpy(nameptr, fi->fileIdent + liu, lfi - poffset);
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| 212 |
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memcpy(nameptr + lfi - poffset, fibh->ebh->b_data, poffset);
|
| 213 |
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}
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| 214 |
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}
|
| 215 |
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|
|
| 216 |
|
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if ((cfi->fileCharacteristics & FID_FILE_CHAR_DELETED) != 0) {
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| 217 |
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if (!UDF_QUERY_FLAG(dir->i_sb, UDF_FLAG_UNDELETE))
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| 218 |
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continue;
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| 219 |
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}
|
| 220 |
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| 221 |
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if ((cfi->fileCharacteristics & FID_FILE_CHAR_HIDDEN) != 0) {
|
| 222 |
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if (!UDF_QUERY_FLAG(dir->i_sb, UDF_FLAG_UNHIDE))
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| 223 |
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continue;
|
| 224 |
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}
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| 225 |
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| 226 |
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if (!lfi)
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| 227 |
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continue;
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| 228 |
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| 229 |
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if ((flen = udf_get_filename(dir->i_sb, nameptr, fname, lfi))) {
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| 230 |
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if (udf_match(flen, fname, dentry->d_name.len, dentry->d_name.name)) {
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| 231 |
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brelse(epos.bh);
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| 232 |
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return fi;
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| 233 |
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}
|
| 234 |
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}
|
| 235 |
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}
|
| 236 |
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|
| 237 |
|
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if (fibh->sbh != fibh->ebh)
|
| 238 |
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brelse(fibh->ebh);
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| 239 |
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brelse(fibh->sbh);
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| 240 |
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brelse(epos.bh);
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| 241 |
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| 242 |
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return NULL;
|
| 243 |
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}
|
| 244 |
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|
| 245 |
|
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/*
|
| 246 |
|
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* udf_lookup
|
| 247 |
|
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*
|
| 248 |
|
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* PURPOSE
|
| 249 |
|
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* Look-up the inode for a given name.
|
| 250 |
|
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*
|
| 251 |
|
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* DESCRIPTION
|
| 252 |
|
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* Required - lookup_dentry() will return -ENOTDIR if this routine is not
|
| 253 |
|
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* available for a directory. The filesystem is useless if this routine is
|
| 254 |
|
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* not available for at least the filesystem's root directory.
|
| 255 |
|
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*
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| 256 |
|
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* This routine is passed an incomplete dentry - it must be completed by
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| 257 |
|
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* calling d_add(dentry, inode). If the name does not exist, then the
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| 258 |
|
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* specified inode must be set to null. An error should only be returned
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| 259 |
|
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* when the lookup fails for a reason other than the name not existing.
|
| 260 |
|
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* Note that the directory inode semaphore is held during the call.
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| 261 |
|
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*
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| 262 |
|
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* Refer to lookup_dentry() in fs/namei.c
|
| 263 |
|
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* lookup_dentry() -> lookup() -> real_lookup() -> .
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| 264 |
|
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*
|
| 265 |
|
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* PRE-CONDITIONS
|
| 266 |
|
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* dir Pointer to inode of parent directory.
|
| 267 |
|
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* dentry Pointer to dentry to complete.
|
| 268 |
|
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* nd Pointer to lookup nameidata
|
| 269 |
|
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*
|
| 270 |
|
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* POST-CONDITIONS
|
| 271 |
|
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* <return> Zero on success.
|
| 272 |
|
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*
|
| 273 |
|
|
* HISTORY
|
| 274 |
|
|
* July 1, 1997 - Andrew E. Mileski
|
| 275 |
|
|
* Written, tested, and released.
|
| 276 |
|
|
*/
|
| 277 |
|
|
|
| 278 |
|
|
static struct dentry *udf_lookup(struct inode *dir, struct dentry *dentry,
|
| 279 |
|
|
struct nameidata *nd)
|
| 280 |
|
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{
|
| 281 |
|
|
struct inode *inode = NULL;
|
| 282 |
|
|
struct fileIdentDesc cfi;
|
| 283 |
|
|
struct udf_fileident_bh fibh;
|
| 284 |
|
|
|
| 285 |
|
|
if (dentry->d_name.len > UDF_NAME_LEN - 2)
|
| 286 |
|
|
return ERR_PTR(-ENAMETOOLONG);
|
| 287 |
|
|
|
| 288 |
|
|
lock_kernel();
|
| 289 |
|
|
#ifdef UDF_RECOVERY
|
| 290 |
|
|
/* temporary shorthand for specifying files by inode number */
|
| 291 |
|
|
if (!strncmp(dentry->d_name.name, ".B=", 3)) {
|
| 292 |
|
|
kernel_lb_addr lb = {
|
| 293 |
|
|
.logicalBlockNum = 0,
|
| 294 |
|
|
.partitionReferenceNum = simple_strtoul(dentry->d_name.name + 3,
|
| 295 |
|
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NULL, 0),
|
| 296 |
|
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};
|
| 297 |
|
|
inode = udf_iget(dir->i_sb, lb);
|
| 298 |
|
|
if (!inode) {
|
| 299 |
|
|
unlock_kernel();
|
| 300 |
|
|
return ERR_PTR(-EACCES);
|
| 301 |
|
|
}
|
| 302 |
|
|
}
|
| 303 |
|
|
else
|
| 304 |
|
|
#endif /* UDF_RECOVERY */
|
| 305 |
|
|
|
| 306 |
|
|
if (udf_find_entry(dir, dentry, &fibh, &cfi)) {
|
| 307 |
|
|
if (fibh.sbh != fibh.ebh)
|
| 308 |
|
|
brelse(fibh.ebh);
|
| 309 |
|
|
brelse(fibh.sbh);
|
| 310 |
|
|
|
| 311 |
|
|
inode = udf_iget(dir->i_sb, lelb_to_cpu(cfi.icb.extLocation));
|
| 312 |
|
|
if (!inode) {
|
| 313 |
|
|
unlock_kernel();
|
| 314 |
|
|
return ERR_PTR(-EACCES);
|
| 315 |
|
|
}
|
| 316 |
|
|
}
|
| 317 |
|
|
unlock_kernel();
|
| 318 |
|
|
d_add(dentry, inode);
|
| 319 |
|
|
|
| 320 |
|
|
return NULL;
|
| 321 |
|
|
}
|
| 322 |
|
|
|
| 323 |
|
|
static struct fileIdentDesc *udf_add_entry(struct inode *dir,
|
| 324 |
|
|
struct dentry *dentry,
|
| 325 |
|
|
struct udf_fileident_bh *fibh,
|
| 326 |
|
|
struct fileIdentDesc *cfi, int *err)
|
| 327 |
|
|
{
|
| 328 |
|
|
struct super_block *sb;
|
| 329 |
|
|
struct fileIdentDesc *fi = NULL;
|
| 330 |
|
|
char name[UDF_NAME_LEN], fname[UDF_NAME_LEN];
|
| 331 |
|
|
int namelen;
|
| 332 |
|
|
loff_t f_pos;
|
| 333 |
|
|
int flen;
|
| 334 |
|
|
char *nameptr;
|
| 335 |
|
|
loff_t size = (udf_ext0_offset(dir) + dir->i_size) >> 2;
|
| 336 |
|
|
int nfidlen;
|
| 337 |
|
|
uint8_t lfi;
|
| 338 |
|
|
uint16_t liu;
|
| 339 |
|
|
int block;
|
| 340 |
|
|
kernel_lb_addr eloc;
|
| 341 |
|
|
uint32_t elen;
|
| 342 |
|
|
sector_t offset;
|
| 343 |
|
|
struct extent_position epos = {};
|
| 344 |
|
|
|
| 345 |
|
|
sb = dir->i_sb;
|
| 346 |
|
|
|
| 347 |
|
|
if (dentry) {
|
| 348 |
|
|
if (!dentry->d_name.len) {
|
| 349 |
|
|
*err = -EINVAL;
|
| 350 |
|
|
return NULL;
|
| 351 |
|
|
}
|
| 352 |
|
|
if (!(namelen = udf_put_filename(sb, dentry->d_name.name, name,
|
| 353 |
|
|
dentry->d_name.len))) {
|
| 354 |
|
|
*err = -ENAMETOOLONG;
|
| 355 |
|
|
return NULL;
|
| 356 |
|
|
}
|
| 357 |
|
|
} else {
|
| 358 |
|
|
namelen = 0;
|
| 359 |
|
|
}
|
| 360 |
|
|
|
| 361 |
|
|
nfidlen = (sizeof(struct fileIdentDesc) + namelen + 3) & ~3;
|
| 362 |
|
|
|
| 363 |
|
|
f_pos = (udf_ext0_offset(dir) >> 2);
|
| 364 |
|
|
|
| 365 |
|
|
fibh->soffset = fibh->eoffset = (f_pos & ((dir->i_sb->s_blocksize - 1) >> 2)) << 2;
|
| 366 |
|
|
if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) {
|
| 367 |
|
|
fibh->sbh = fibh->ebh = NULL;
|
| 368 |
|
|
} else if (inode_bmap(dir, f_pos >> (dir->i_sb->s_blocksize_bits - 2),
|
| 369 |
|
|
&epos, &eloc, &elen, &offset) == (EXT_RECORDED_ALLOCATED >> 30)) {
|
| 370 |
|
|
block = udf_get_lb_pblock(dir->i_sb, eloc, offset);
|
| 371 |
|
|
if ((++offset << dir->i_sb->s_blocksize_bits) < elen) {
|
| 372 |
|
|
if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_SHORT)
|
| 373 |
|
|
epos.offset -= sizeof(short_ad);
|
| 374 |
|
|
else if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_LONG)
|
| 375 |
|
|
epos.offset -= sizeof(long_ad);
|
| 376 |
|
|
} else {
|
| 377 |
|
|
offset = 0;
|
| 378 |
|
|
}
|
| 379 |
|
|
|
| 380 |
|
|
if (!(fibh->sbh = fibh->ebh = udf_tread(dir->i_sb, block))) {
|
| 381 |
|
|
brelse(epos.bh);
|
| 382 |
|
|
*err = -EIO;
|
| 383 |
|
|
return NULL;
|
| 384 |
|
|
}
|
| 385 |
|
|
|
| 386 |
|
|
block = UDF_I_LOCATION(dir).logicalBlockNum;
|
| 387 |
|
|
|
| 388 |
|
|
} else {
|
| 389 |
|
|
block = udf_get_lb_pblock(dir->i_sb, UDF_I_LOCATION(dir), 0);
|
| 390 |
|
|
fibh->sbh = fibh->ebh = NULL;
|
| 391 |
|
|
fibh->soffset = fibh->eoffset = sb->s_blocksize;
|
| 392 |
|
|
goto add;
|
| 393 |
|
|
}
|
| 394 |
|
|
|
| 395 |
|
|
while ((f_pos < size)) {
|
| 396 |
|
|
fi = udf_fileident_read(dir, &f_pos, fibh, cfi, &epos, &eloc,
|
| 397 |
|
|
&elen, &offset);
|
| 398 |
|
|
|
| 399 |
|
|
if (!fi) {
|
| 400 |
|
|
if (fibh->sbh != fibh->ebh)
|
| 401 |
|
|
brelse(fibh->ebh);
|
| 402 |
|
|
brelse(fibh->sbh);
|
| 403 |
|
|
brelse(epos.bh);
|
| 404 |
|
|
*err = -EIO;
|
| 405 |
|
|
return NULL;
|
| 406 |
|
|
}
|
| 407 |
|
|
|
| 408 |
|
|
liu = le16_to_cpu(cfi->lengthOfImpUse);
|
| 409 |
|
|
lfi = cfi->lengthFileIdent;
|
| 410 |
|
|
|
| 411 |
|
|
if (fibh->sbh == fibh->ebh) {
|
| 412 |
|
|
nameptr = fi->fileIdent + liu;
|
| 413 |
|
|
} else {
|
| 414 |
|
|
int poffset; /* Unpaded ending offset */
|
| 415 |
|
|
|
| 416 |
|
|
poffset = fibh->soffset + sizeof(struct fileIdentDesc) + liu + lfi;
|
| 417 |
|
|
|
| 418 |
|
|
if (poffset >= lfi) {
|
| 419 |
|
|
nameptr = (char *)(fibh->ebh->b_data + poffset - lfi);
|
| 420 |
|
|
} else {
|
| 421 |
|
|
nameptr = fname;
|
| 422 |
|
|
memcpy(nameptr, fi->fileIdent + liu, lfi - poffset);
|
| 423 |
|
|
memcpy(nameptr + lfi - poffset, fibh->ebh->b_data, poffset);
|
| 424 |
|
|
}
|
| 425 |
|
|
}
|
| 426 |
|
|
|
| 427 |
|
|
if ((cfi->fileCharacteristics & FID_FILE_CHAR_DELETED) != 0) {
|
| 428 |
|
|
if (((sizeof(struct fileIdentDesc) + liu + lfi + 3) & ~3) == nfidlen) {
|
| 429 |
|
|
brelse(epos.bh);
|
| 430 |
|
|
cfi->descTag.tagSerialNum = cpu_to_le16(1);
|
| 431 |
|
|
cfi->fileVersionNum = cpu_to_le16(1);
|
| 432 |
|
|
cfi->fileCharacteristics = 0;
|
| 433 |
|
|
cfi->lengthFileIdent = namelen;
|
| 434 |
|
|
cfi->lengthOfImpUse = cpu_to_le16(0);
|
| 435 |
|
|
if (!udf_write_fi(dir, cfi, fi, fibh, NULL, name)) {
|
| 436 |
|
|
return fi;
|
| 437 |
|
|
} else {
|
| 438 |
|
|
*err = -EIO;
|
| 439 |
|
|
return NULL;
|
| 440 |
|
|
}
|
| 441 |
|
|
}
|
| 442 |
|
|
}
|
| 443 |
|
|
|
| 444 |
|
|
if (!lfi || !dentry)
|
| 445 |
|
|
continue;
|
| 446 |
|
|
|
| 447 |
|
|
if ((flen = udf_get_filename(dir->i_sb, nameptr, fname, lfi)) &&
|
| 448 |
|
|
udf_match(flen, fname, dentry->d_name.len, dentry->d_name.name)) {
|
| 449 |
|
|
if (fibh->sbh != fibh->ebh)
|
| 450 |
|
|
brelse(fibh->ebh);
|
| 451 |
|
|
brelse(fibh->sbh);
|
| 452 |
|
|
brelse(epos.bh);
|
| 453 |
|
|
*err = -EEXIST;
|
| 454 |
|
|
return NULL;
|
| 455 |
|
|
}
|
| 456 |
|
|
}
|
| 457 |
|
|
|
| 458 |
|
|
add:
|
| 459 |
|
|
f_pos += nfidlen;
|
| 460 |
|
|
|
| 461 |
|
|
if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB &&
|
| 462 |
|
|
sb->s_blocksize - fibh->eoffset < nfidlen) {
|
| 463 |
|
|
brelse(epos.bh);
|
| 464 |
|
|
epos.bh = NULL;
|
| 465 |
|
|
fibh->soffset -= udf_ext0_offset(dir);
|
| 466 |
|
|
fibh->eoffset -= udf_ext0_offset(dir);
|
| 467 |
|
|
f_pos -= (udf_ext0_offset(dir) >> 2);
|
| 468 |
|
|
if (fibh->sbh != fibh->ebh)
|
| 469 |
|
|
brelse(fibh->ebh);
|
| 470 |
|
|
brelse(fibh->sbh);
|
| 471 |
|
|
if (!(fibh->sbh = fibh->ebh = udf_expand_dir_adinicb(dir, &block, err)))
|
| 472 |
|
|
return NULL;
|
| 473 |
|
|
epos.block = UDF_I_LOCATION(dir);
|
| 474 |
|
|
eloc.logicalBlockNum = block;
|
| 475 |
|
|
eloc.partitionReferenceNum = UDF_I_LOCATION(dir).partitionReferenceNum;
|
| 476 |
|
|
elen = dir->i_sb->s_blocksize;
|
| 477 |
|
|
epos.offset = udf_file_entry_alloc_offset(dir);
|
| 478 |
|
|
if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_SHORT)
|
| 479 |
|
|
epos.offset += sizeof(short_ad);
|
| 480 |
|
|
else if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_LONG)
|
| 481 |
|
|
epos.offset += sizeof(long_ad);
|
| 482 |
|
|
}
|
| 483 |
|
|
|
| 484 |
|
|
if (sb->s_blocksize - fibh->eoffset >= nfidlen) {
|
| 485 |
|
|
fibh->soffset = fibh->eoffset;
|
| 486 |
|
|
fibh->eoffset += nfidlen;
|
| 487 |
|
|
if (fibh->sbh != fibh->ebh) {
|
| 488 |
|
|
brelse(fibh->sbh);
|
| 489 |
|
|
fibh->sbh = fibh->ebh;
|
| 490 |
|
|
}
|
| 491 |
|
|
|
| 492 |
|
|
if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) {
|
| 493 |
|
|
block = UDF_I_LOCATION(dir).logicalBlockNum;
|
| 494 |
|
|
fi = (struct fileIdentDesc *)(UDF_I_DATA(dir) + fibh->soffset -
|
| 495 |
|
|
udf_ext0_offset(dir) +
|
| 496 |
|
|
UDF_I_LENEATTR(dir));
|
| 497 |
|
|
} else {
|
| 498 |
|
|
block = eloc.logicalBlockNum + ((elen - 1) >>
|
| 499 |
|
|
dir->i_sb->s_blocksize_bits);
|
| 500 |
|
|
fi = (struct fileIdentDesc *)(fibh->sbh->b_data + fibh->soffset);
|
| 501 |
|
|
}
|
| 502 |
|
|
} else {
|
| 503 |
|
|
fibh->soffset = fibh->eoffset - sb->s_blocksize;
|
| 504 |
|
|
fibh->eoffset += nfidlen - sb->s_blocksize;
|
| 505 |
|
|
if (fibh->sbh != fibh->ebh) {
|
| 506 |
|
|
brelse(fibh->sbh);
|
| 507 |
|
|
fibh->sbh = fibh->ebh;
|
| 508 |
|
|
}
|
| 509 |
|
|
|
| 510 |
|
|
block = eloc.logicalBlockNum + ((elen - 1) >>
|
| 511 |
|
|
dir->i_sb->s_blocksize_bits);
|
| 512 |
|
|
fibh->ebh = udf_bread(dir, f_pos >> (dir->i_sb->s_blocksize_bits - 2), 1, err);
|
| 513 |
|
|
if (!fibh->ebh) {
|
| 514 |
|
|
brelse(epos.bh);
|
| 515 |
|
|
brelse(fibh->sbh);
|
| 516 |
|
|
return NULL;
|
| 517 |
|
|
}
|
| 518 |
|
|
|
| 519 |
|
|
if (!fibh->soffset) {
|
| 520 |
|
|
if (udf_next_aext(dir, &epos, &eloc, &elen, 1) ==
|
| 521 |
|
|
(EXT_RECORDED_ALLOCATED >> 30)) {
|
| 522 |
|
|
block = eloc.logicalBlockNum + ((elen - 1) >>
|
| 523 |
|
|
dir->i_sb->s_blocksize_bits);
|
| 524 |
|
|
} else {
|
| 525 |
|
|
block++;
|
| 526 |
|
|
}
|
| 527 |
|
|
|
| 528 |
|
|
brelse(fibh->sbh);
|
| 529 |
|
|
fibh->sbh = fibh->ebh;
|
| 530 |
|
|
fi = (struct fileIdentDesc *)(fibh->sbh->b_data);
|
| 531 |
|
|
} else {
|
| 532 |
|
|
fi = (struct fileIdentDesc *)
|
| 533 |
|
|
(fibh->sbh->b_data + sb->s_blocksize + fibh->soffset);
|
| 534 |
|
|
}
|
| 535 |
|
|
}
|
| 536 |
|
|
|
| 537 |
|
|
memset(cfi, 0, sizeof(struct fileIdentDesc));
|
| 538 |
|
|
if (UDF_SB_UDFREV(sb) >= 0x0200)
|
| 539 |
|
|
udf_new_tag((char *)cfi, TAG_IDENT_FID, 3, 1, block, sizeof(tag));
|
| 540 |
|
|
else
|
| 541 |
|
|
udf_new_tag((char *)cfi, TAG_IDENT_FID, 2, 1, block, sizeof(tag));
|
| 542 |
|
|
cfi->fileVersionNum = cpu_to_le16(1);
|
| 543 |
|
|
cfi->lengthFileIdent = namelen;
|
| 544 |
|
|
cfi->lengthOfImpUse = cpu_to_le16(0);
|
| 545 |
|
|
if (!udf_write_fi(dir, cfi, fi, fibh, NULL, name)) {
|
| 546 |
|
|
brelse(epos.bh);
|
| 547 |
|
|
dir->i_size += nfidlen;
|
| 548 |
|
|
if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB)
|
| 549 |
|
|
UDF_I_LENALLOC(dir) += nfidlen;
|
| 550 |
|
|
mark_inode_dirty(dir);
|
| 551 |
|
|
return fi;
|
| 552 |
|
|
} else {
|
| 553 |
|
|
brelse(epos.bh);
|
| 554 |
|
|
if (fibh->sbh != fibh->ebh)
|
| 555 |
|
|
brelse(fibh->ebh);
|
| 556 |
|
|
brelse(fibh->sbh);
|
| 557 |
|
|
*err = -EIO;
|
| 558 |
|
|
return NULL;
|
| 559 |
|
|
}
|
| 560 |
|
|
}
|
| 561 |
|
|
|
| 562 |
|
|
static int udf_delete_entry(struct inode *inode, struct fileIdentDesc *fi,
|
| 563 |
|
|
struct udf_fileident_bh *fibh,
|
| 564 |
|
|
struct fileIdentDesc *cfi)
|
| 565 |
|
|
{
|
| 566 |
|
|
cfi->fileCharacteristics |= FID_FILE_CHAR_DELETED;
|
| 567 |
|
|
|
| 568 |
|
|
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT))
|
| 569 |
|
|
memset(&(cfi->icb), 0x00, sizeof(long_ad));
|
| 570 |
|
|
|
| 571 |
|
|
return udf_write_fi(inode, cfi, fi, fibh, NULL, NULL);
|
| 572 |
|
|
}
|
| 573 |
|
|
|
| 574 |
|
|
static int udf_create(struct inode *dir, struct dentry *dentry, int mode,
|
| 575 |
|
|
struct nameidata *nd)
|
| 576 |
|
|
{
|
| 577 |
|
|
struct udf_fileident_bh fibh;
|
| 578 |
|
|
struct inode *inode;
|
| 579 |
|
|
struct fileIdentDesc cfi, *fi;
|
| 580 |
|
|
int err;
|
| 581 |
|
|
|
| 582 |
|
|
lock_kernel();
|
| 583 |
|
|
inode = udf_new_inode(dir, mode, &err);
|
| 584 |
|
|
if (!inode) {
|
| 585 |
|
|
unlock_kernel();
|
| 586 |
|
|
return err;
|
| 587 |
|
|
}
|
| 588 |
|
|
|
| 589 |
|
|
if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_IN_ICB)
|
| 590 |
|
|
inode->i_data.a_ops = &udf_adinicb_aops;
|
| 591 |
|
|
else
|
| 592 |
|
|
inode->i_data.a_ops = &udf_aops;
|
| 593 |
|
|
inode->i_op = &udf_file_inode_operations;
|
| 594 |
|
|
inode->i_fop = &udf_file_operations;
|
| 595 |
|
|
inode->i_mode = mode;
|
| 596 |
|
|
mark_inode_dirty(inode);
|
| 597 |
|
|
|
| 598 |
|
|
if (!(fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err))) {
|
| 599 |
|
|
inode->i_nlink--;
|
| 600 |
|
|
mark_inode_dirty(inode);
|
| 601 |
|
|
iput(inode);
|
| 602 |
|
|
unlock_kernel();
|
| 603 |
|
|
return err;
|
| 604 |
|
|
}
|
| 605 |
|
|
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
|
| 606 |
|
|
cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(inode));
|
| 607 |
|
|
*(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
|
| 608 |
|
|
cpu_to_le32(UDF_I_UNIQUE(inode) & 0x00000000FFFFFFFFUL);
|
| 609 |
|
|
udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
|
| 610 |
|
|
if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) {
|
| 611 |
|
|
mark_inode_dirty(dir);
|
| 612 |
|
|
}
|
| 613 |
|
|
if (fibh.sbh != fibh.ebh)
|
| 614 |
|
|
brelse(fibh.ebh);
|
| 615 |
|
|
brelse(fibh.sbh);
|
| 616 |
|
|
unlock_kernel();
|
| 617 |
|
|
d_instantiate(dentry, inode);
|
| 618 |
|
|
|
| 619 |
|
|
return 0;
|
| 620 |
|
|
}
|
| 621 |
|
|
|
| 622 |
|
|
static int udf_mknod(struct inode *dir, struct dentry *dentry, int mode,
|
| 623 |
|
|
dev_t rdev)
|
| 624 |
|
|
{
|
| 625 |
|
|
struct inode *inode;
|
| 626 |
|
|
struct udf_fileident_bh fibh;
|
| 627 |
|
|
struct fileIdentDesc cfi, *fi;
|
| 628 |
|
|
int err;
|
| 629 |
|
|
|
| 630 |
|
|
if (!old_valid_dev(rdev))
|
| 631 |
|
|
return -EINVAL;
|
| 632 |
|
|
|
| 633 |
|
|
lock_kernel();
|
| 634 |
|
|
err = -EIO;
|
| 635 |
|
|
inode = udf_new_inode(dir, mode, &err);
|
| 636 |
|
|
if (!inode)
|
| 637 |
|
|
goto out;
|
| 638 |
|
|
|
| 639 |
|
|
inode->i_uid = current->fsuid;
|
| 640 |
|
|
init_special_inode(inode, mode, rdev);
|
| 641 |
|
|
if (!(fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err))) {
|
| 642 |
|
|
inode->i_nlink--;
|
| 643 |
|
|
mark_inode_dirty(inode);
|
| 644 |
|
|
iput(inode);
|
| 645 |
|
|
unlock_kernel();
|
| 646 |
|
|
return err;
|
| 647 |
|
|
}
|
| 648 |
|
|
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
|
| 649 |
|
|
cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(inode));
|
| 650 |
|
|
*(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
|
| 651 |
|
|
cpu_to_le32(UDF_I_UNIQUE(inode) & 0x00000000FFFFFFFFUL);
|
| 652 |
|
|
udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
|
| 653 |
|
|
if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) {
|
| 654 |
|
|
mark_inode_dirty(dir);
|
| 655 |
|
|
}
|
| 656 |
|
|
mark_inode_dirty(inode);
|
| 657 |
|
|
|
| 658 |
|
|
if (fibh.sbh != fibh.ebh)
|
| 659 |
|
|
brelse(fibh.ebh);
|
| 660 |
|
|
brelse(fibh.sbh);
|
| 661 |
|
|
d_instantiate(dentry, inode);
|
| 662 |
|
|
err = 0;
|
| 663 |
|
|
|
| 664 |
|
|
out:
|
| 665 |
|
|
unlock_kernel();
|
| 666 |
|
|
return err;
|
| 667 |
|
|
}
|
| 668 |
|
|
|
| 669 |
|
|
static int udf_mkdir(struct inode *dir, struct dentry *dentry, int mode)
|
| 670 |
|
|
{
|
| 671 |
|
|
struct inode *inode;
|
| 672 |
|
|
struct udf_fileident_bh fibh;
|
| 673 |
|
|
struct fileIdentDesc cfi, *fi;
|
| 674 |
|
|
int err;
|
| 675 |
|
|
|
| 676 |
|
|
lock_kernel();
|
| 677 |
|
|
err = -EMLINK;
|
| 678 |
|
|
if (dir->i_nlink >= (256 << sizeof(dir->i_nlink)) - 1)
|
| 679 |
|
|
goto out;
|
| 680 |
|
|
|
| 681 |
|
|
err = -EIO;
|
| 682 |
|
|
inode = udf_new_inode(dir, S_IFDIR, &err);
|
| 683 |
|
|
if (!inode)
|
| 684 |
|
|
goto out;
|
| 685 |
|
|
|
| 686 |
|
|
inode->i_op = &udf_dir_inode_operations;
|
| 687 |
|
|
inode->i_fop = &udf_dir_operations;
|
| 688 |
|
|
if (!(fi = udf_add_entry(inode, NULL, &fibh, &cfi, &err))) {
|
| 689 |
|
|
inode->i_nlink--;
|
| 690 |
|
|
mark_inode_dirty(inode);
|
| 691 |
|
|
iput(inode);
|
| 692 |
|
|
goto out;
|
| 693 |
|
|
}
|
| 694 |
|
|
inode->i_nlink = 2;
|
| 695 |
|
|
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
|
| 696 |
|
|
cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(dir));
|
| 697 |
|
|
*(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
|
| 698 |
|
|
cpu_to_le32(UDF_I_UNIQUE(dir) & 0x00000000FFFFFFFFUL);
|
| 699 |
|
|
cfi.fileCharacteristics = FID_FILE_CHAR_DIRECTORY | FID_FILE_CHAR_PARENT;
|
| 700 |
|
|
udf_write_fi(inode, &cfi, fi, &fibh, NULL, NULL);
|
| 701 |
|
|
brelse(fibh.sbh);
|
| 702 |
|
|
inode->i_mode = S_IFDIR | mode;
|
| 703 |
|
|
if (dir->i_mode & S_ISGID)
|
| 704 |
|
|
inode->i_mode |= S_ISGID;
|
| 705 |
|
|
mark_inode_dirty(inode);
|
| 706 |
|
|
|
| 707 |
|
|
if (!(fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err))) {
|
| 708 |
|
|
inode->i_nlink = 0;
|
| 709 |
|
|
mark_inode_dirty(inode);
|
| 710 |
|
|
iput(inode);
|
| 711 |
|
|
goto out;
|
| 712 |
|
|
}
|
| 713 |
|
|
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
|
| 714 |
|
|
cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(inode));
|
| 715 |
|
|
*(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
|
| 716 |
|
|
cpu_to_le32(UDF_I_UNIQUE(inode) & 0x00000000FFFFFFFFUL);
|
| 717 |
|
|
cfi.fileCharacteristics |= FID_FILE_CHAR_DIRECTORY;
|
| 718 |
|
|
udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
|
| 719 |
|
|
inc_nlink(dir);
|
| 720 |
|
|
mark_inode_dirty(dir);
|
| 721 |
|
|
d_instantiate(dentry, inode);
|
| 722 |
|
|
if (fibh.sbh != fibh.ebh)
|
| 723 |
|
|
brelse(fibh.ebh);
|
| 724 |
|
|
brelse(fibh.sbh);
|
| 725 |
|
|
err = 0;
|
| 726 |
|
|
|
| 727 |
|
|
out:
|
| 728 |
|
|
unlock_kernel();
|
| 729 |
|
|
return err;
|
| 730 |
|
|
}
|
| 731 |
|
|
|
| 732 |
|
|
static int empty_dir(struct inode *dir)
|
| 733 |
|
|
{
|
| 734 |
|
|
struct fileIdentDesc *fi, cfi;
|
| 735 |
|
|
struct udf_fileident_bh fibh;
|
| 736 |
|
|
loff_t f_pos;
|
| 737 |
|
|
loff_t size = (udf_ext0_offset(dir) + dir->i_size) >> 2;
|
| 738 |
|
|
int block;
|
| 739 |
|
|
kernel_lb_addr eloc;
|
| 740 |
|
|
uint32_t elen;
|
| 741 |
|
|
sector_t offset;
|
| 742 |
|
|
struct extent_position epos = {};
|
| 743 |
|
|
|
| 744 |
|
|
f_pos = (udf_ext0_offset(dir) >> 2);
|
| 745 |
|
|
|
| 746 |
|
|
fibh.soffset = fibh.eoffset = (f_pos & ((dir->i_sb->s_blocksize - 1) >> 2)) << 2;
|
| 747 |
|
|
|
| 748 |
|
|
if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) {
|
| 749 |
|
|
fibh.sbh = fibh.ebh = NULL;
|
| 750 |
|
|
} else if (inode_bmap(dir, f_pos >> (dir->i_sb->s_blocksize_bits - 2),
|
| 751 |
|
|
&epos, &eloc, &elen, &offset) == (EXT_RECORDED_ALLOCATED >> 30)) {
|
| 752 |
|
|
block = udf_get_lb_pblock(dir->i_sb, eloc, offset);
|
| 753 |
|
|
if ((++offset << dir->i_sb->s_blocksize_bits) < elen) {
|
| 754 |
|
|
if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_SHORT)
|
| 755 |
|
|
epos.offset -= sizeof(short_ad);
|
| 756 |
|
|
else if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_LONG)
|
| 757 |
|
|
epos.offset -= sizeof(long_ad);
|
| 758 |
|
|
} else {
|
| 759 |
|
|
offset = 0;
|
| 760 |
|
|
}
|
| 761 |
|
|
|
| 762 |
|
|
if (!(fibh.sbh = fibh.ebh = udf_tread(dir->i_sb, block))) {
|
| 763 |
|
|
brelse(epos.bh);
|
| 764 |
|
|
return 0;
|
| 765 |
|
|
}
|
| 766 |
|
|
} else {
|
| 767 |
|
|
brelse(epos.bh);
|
| 768 |
|
|
return 0;
|
| 769 |
|
|
}
|
| 770 |
|
|
|
| 771 |
|
|
while ((f_pos < size)) {
|
| 772 |
|
|
fi = udf_fileident_read(dir, &f_pos, &fibh, &cfi, &epos, &eloc,
|
| 773 |
|
|
&elen, &offset);
|
| 774 |
|
|
if (!fi) {
|
| 775 |
|
|
if (fibh.sbh != fibh.ebh)
|
| 776 |
|
|
brelse(fibh.ebh);
|
| 777 |
|
|
brelse(fibh.sbh);
|
| 778 |
|
|
brelse(epos.bh);
|
| 779 |
|
|
return 0;
|
| 780 |
|
|
}
|
| 781 |
|
|
|
| 782 |
|
|
if (cfi.lengthFileIdent &&
|
| 783 |
|
|
(cfi.fileCharacteristics & FID_FILE_CHAR_DELETED) == 0) {
|
| 784 |
|
|
if (fibh.sbh != fibh.ebh)
|
| 785 |
|
|
brelse(fibh.ebh);
|
| 786 |
|
|
brelse(fibh.sbh);
|
| 787 |
|
|
brelse(epos.bh);
|
| 788 |
|
|
return 0;
|
| 789 |
|
|
}
|
| 790 |
|
|
}
|
| 791 |
|
|
|
| 792 |
|
|
if (fibh.sbh != fibh.ebh)
|
| 793 |
|
|
brelse(fibh.ebh);
|
| 794 |
|
|
brelse(fibh.sbh);
|
| 795 |
|
|
brelse(epos.bh);
|
| 796 |
|
|
|
| 797 |
|
|
return 1;
|
| 798 |
|
|
}
|
| 799 |
|
|
|
| 800 |
|
|
static int udf_rmdir(struct inode *dir, struct dentry *dentry)
|
| 801 |
|
|
{
|
| 802 |
|
|
int retval;
|
| 803 |
|
|
struct inode *inode = dentry->d_inode;
|
| 804 |
|
|
struct udf_fileident_bh fibh;
|
| 805 |
|
|
struct fileIdentDesc *fi, cfi;
|
| 806 |
|
|
kernel_lb_addr tloc;
|
| 807 |
|
|
|
| 808 |
|
|
retval = -ENOENT;
|
| 809 |
|
|
lock_kernel();
|
| 810 |
|
|
fi = udf_find_entry(dir, dentry, &fibh, &cfi);
|
| 811 |
|
|
if (!fi)
|
| 812 |
|
|
goto out;
|
| 813 |
|
|
|
| 814 |
|
|
retval = -EIO;
|
| 815 |
|
|
tloc = lelb_to_cpu(cfi.icb.extLocation);
|
| 816 |
|
|
if (udf_get_lb_pblock(dir->i_sb, tloc, 0) != inode->i_ino)
|
| 817 |
|
|
goto end_rmdir;
|
| 818 |
|
|
retval = -ENOTEMPTY;
|
| 819 |
|
|
if (!empty_dir(inode))
|
| 820 |
|
|
goto end_rmdir;
|
| 821 |
|
|
retval = udf_delete_entry(dir, fi, &fibh, &cfi);
|
| 822 |
|
|
if (retval)
|
| 823 |
|
|
goto end_rmdir;
|
| 824 |
|
|
if (inode->i_nlink != 2)
|
| 825 |
|
|
udf_warning(inode->i_sb, "udf_rmdir",
|
| 826 |
|
|
"empty directory has nlink != 2 (%d)",
|
| 827 |
|
|
inode->i_nlink);
|
| 828 |
|
|
clear_nlink(inode);
|
| 829 |
|
|
inode->i_size = 0;
|
| 830 |
|
|
inode_dec_link_count(dir);
|
| 831 |
|
|
inode->i_ctime = dir->i_ctime = dir->i_mtime = current_fs_time(dir->i_sb);
|
| 832 |
|
|
mark_inode_dirty(dir);
|
| 833 |
|
|
|
| 834 |
|
|
end_rmdir:
|
| 835 |
|
|
if (fibh.sbh != fibh.ebh)
|
| 836 |
|
|
brelse(fibh.ebh);
|
| 837 |
|
|
brelse(fibh.sbh);
|
| 838 |
|
|
|
| 839 |
|
|
out:
|
| 840 |
|
|
unlock_kernel();
|
| 841 |
|
|
return retval;
|
| 842 |
|
|
}
|
| 843 |
|
|
|
| 844 |
|
|
static int udf_unlink(struct inode *dir, struct dentry *dentry)
|
| 845 |
|
|
{
|
| 846 |
|
|
int retval;
|
| 847 |
|
|
struct inode *inode = dentry->d_inode;
|
| 848 |
|
|
struct udf_fileident_bh fibh;
|
| 849 |
|
|
struct fileIdentDesc *fi;
|
| 850 |
|
|
struct fileIdentDesc cfi;
|
| 851 |
|
|
kernel_lb_addr tloc;
|
| 852 |
|
|
|
| 853 |
|
|
retval = -ENOENT;
|
| 854 |
|
|
lock_kernel();
|
| 855 |
|
|
fi = udf_find_entry(dir, dentry, &fibh, &cfi);
|
| 856 |
|
|
if (!fi)
|
| 857 |
|
|
goto out;
|
| 858 |
|
|
|
| 859 |
|
|
retval = -EIO;
|
| 860 |
|
|
tloc = lelb_to_cpu(cfi.icb.extLocation);
|
| 861 |
|
|
if (udf_get_lb_pblock(dir->i_sb, tloc, 0) != inode->i_ino)
|
| 862 |
|
|
goto end_unlink;
|
| 863 |
|
|
|
| 864 |
|
|
if (!inode->i_nlink) {
|
| 865 |
|
|
udf_debug("Deleting nonexistent file (%lu), %d\n",
|
| 866 |
|
|
inode->i_ino, inode->i_nlink);
|
| 867 |
|
|
inode->i_nlink = 1;
|
| 868 |
|
|
}
|
| 869 |
|
|
retval = udf_delete_entry(dir, fi, &fibh, &cfi);
|
| 870 |
|
|
if (retval)
|
| 871 |
|
|
goto end_unlink;
|
| 872 |
|
|
dir->i_ctime = dir->i_mtime = current_fs_time(dir->i_sb);
|
| 873 |
|
|
mark_inode_dirty(dir);
|
| 874 |
|
|
inode_dec_link_count(inode);
|
| 875 |
|
|
inode->i_ctime = dir->i_ctime;
|
| 876 |
|
|
retval = 0;
|
| 877 |
|
|
|
| 878 |
|
|
end_unlink:
|
| 879 |
|
|
if (fibh.sbh != fibh.ebh)
|
| 880 |
|
|
brelse(fibh.ebh);
|
| 881 |
|
|
brelse(fibh.sbh);
|
| 882 |
|
|
|
| 883 |
|
|
out:
|
| 884 |
|
|
unlock_kernel();
|
| 885 |
|
|
return retval;
|
| 886 |
|
|
}
|
| 887 |
|
|
|
| 888 |
|
|
static int udf_symlink(struct inode *dir, struct dentry *dentry,
|
| 889 |
|
|
const char *symname)
|
| 890 |
|
|
{
|
| 891 |
|
|
struct inode *inode;
|
| 892 |
|
|
struct pathComponent *pc;
|
| 893 |
|
|
char *compstart;
|
| 894 |
|
|
struct udf_fileident_bh fibh;
|
| 895 |
|
|
struct extent_position epos = {};
|
| 896 |
|
|
int eoffset, elen = 0;
|
| 897 |
|
|
struct fileIdentDesc *fi;
|
| 898 |
|
|
struct fileIdentDesc cfi;
|
| 899 |
|
|
char *ea;
|
| 900 |
|
|
int err;
|
| 901 |
|
|
int block;
|
| 902 |
|
|
char name[UDF_NAME_LEN];
|
| 903 |
|
|
int namelen;
|
| 904 |
|
|
|
| 905 |
|
|
lock_kernel();
|
| 906 |
|
|
if (!(inode = udf_new_inode(dir, S_IFLNK, &err)))
|
| 907 |
|
|
goto out;
|
| 908 |
|
|
|
| 909 |
|
|
inode->i_mode = S_IFLNK | S_IRWXUGO;
|
| 910 |
|
|
inode->i_data.a_ops = &udf_symlink_aops;
|
| 911 |
|
|
inode->i_op = &page_symlink_inode_operations;
|
| 912 |
|
|
|
| 913 |
|
|
if (UDF_I_ALLOCTYPE(inode) != ICBTAG_FLAG_AD_IN_ICB) {
|
| 914 |
|
|
kernel_lb_addr eloc;
|
| 915 |
|
|
uint32_t elen;
|
| 916 |
|
|
|
| 917 |
|
|
block = udf_new_block(inode->i_sb, inode,
|
| 918 |
|
|
UDF_I_LOCATION(inode).partitionReferenceNum,
|
| 919 |
|
|
UDF_I_LOCATION(inode).logicalBlockNum, &err);
|
| 920 |
|
|
if (!block)
|
| 921 |
|
|
goto out_no_entry;
|
| 922 |
|
|
epos.block = UDF_I_LOCATION(inode);
|
| 923 |
|
|
epos.offset = udf_file_entry_alloc_offset(inode);
|
| 924 |
|
|
epos.bh = NULL;
|
| 925 |
|
|
eloc.logicalBlockNum = block;
|
| 926 |
|
|
eloc.partitionReferenceNum = UDF_I_LOCATION(inode).partitionReferenceNum;
|
| 927 |
|
|
elen = inode->i_sb->s_blocksize;
|
| 928 |
|
|
UDF_I_LENEXTENTS(inode) = elen;
|
| 929 |
|
|
udf_add_aext(inode, &epos, eloc, elen, 0);
|
| 930 |
|
|
brelse(epos.bh);
|
| 931 |
|
|
|
| 932 |
|
|
block = udf_get_pblock(inode->i_sb, block,
|
| 933 |
|
|
UDF_I_LOCATION(inode).partitionReferenceNum, 0);
|
| 934 |
|
|
epos.bh = udf_tread(inode->i_sb, block);
|
| 935 |
|
|
lock_buffer(epos.bh);
|
| 936 |
|
|
memset(epos.bh->b_data, 0x00, inode->i_sb->s_blocksize);
|
| 937 |
|
|
set_buffer_uptodate(epos.bh);
|
| 938 |
|
|
unlock_buffer(epos.bh);
|
| 939 |
|
|
mark_buffer_dirty_inode(epos.bh, inode);
|
| 940 |
|
|
ea = epos.bh->b_data + udf_ext0_offset(inode);
|
| 941 |
|
|
} else {
|
| 942 |
|
|
ea = UDF_I_DATA(inode) + UDF_I_LENEATTR(inode);
|
| 943 |
|
|
}
|
| 944 |
|
|
|
| 945 |
|
|
eoffset = inode->i_sb->s_blocksize - udf_ext0_offset(inode);
|
| 946 |
|
|
pc = (struct pathComponent *)ea;
|
| 947 |
|
|
|
| 948 |
|
|
if (*symname == '/') {
|
| 949 |
|
|
do {
|
| 950 |
|
|
symname++;
|
| 951 |
|
|
} while (*symname == '/');
|
| 952 |
|
|
|
| 953 |
|
|
pc->componentType = 1;
|
| 954 |
|
|
pc->lengthComponentIdent = 0;
|
| 955 |
|
|
pc->componentFileVersionNum = 0;
|
| 956 |
|
|
pc += sizeof(struct pathComponent);
|
| 957 |
|
|
elen += sizeof(struct pathComponent);
|
| 958 |
|
|
}
|
| 959 |
|
|
|
| 960 |
|
|
err = -ENAMETOOLONG;
|
| 961 |
|
|
|
| 962 |
|
|
while (*symname) {
|
| 963 |
|
|
if (elen + sizeof(struct pathComponent) > eoffset)
|
| 964 |
|
|
goto out_no_entry;
|
| 965 |
|
|
|
| 966 |
|
|
pc = (struct pathComponent *)(ea + elen);
|
| 967 |
|
|
|
| 968 |
|
|
compstart = (char *)symname;
|
| 969 |
|
|
|
| 970 |
|
|
do {
|
| 971 |
|
|
symname++;
|
| 972 |
|
|
} while (*symname && *symname != '/');
|
| 973 |
|
|
|
| 974 |
|
|
pc->componentType = 5;
|
| 975 |
|
|
pc->lengthComponentIdent = 0;
|
| 976 |
|
|
pc->componentFileVersionNum = 0;
|
| 977 |
|
|
if (compstart[0] == '.') {
|
| 978 |
|
|
if ((symname - compstart) == 1)
|
| 979 |
|
|
pc->componentType = 4;
|
| 980 |
|
|
else if ((symname - compstart) == 2 && compstart[1] == '.')
|
| 981 |
|
|
pc->componentType = 3;
|
| 982 |
|
|
}
|
| 983 |
|
|
|
| 984 |
|
|
if (pc->componentType == 5) {
|
| 985 |
|
|
namelen = udf_put_filename(inode->i_sb, compstart, name,
|
| 986 |
|
|
symname - compstart);
|
| 987 |
|
|
if (!namelen)
|
| 988 |
|
|
goto out_no_entry;
|
| 989 |
|
|
|
| 990 |
|
|
if (elen + sizeof(struct pathComponent) + namelen > eoffset)
|
| 991 |
|
|
goto out_no_entry;
|
| 992 |
|
|
else
|
| 993 |
|
|
pc->lengthComponentIdent = namelen;
|
| 994 |
|
|
|
| 995 |
|
|
memcpy(pc->componentIdent, name, namelen);
|
| 996 |
|
|
}
|
| 997 |
|
|
|
| 998 |
|
|
elen += sizeof(struct pathComponent) + pc->lengthComponentIdent;
|
| 999 |
|
|
|
| 1000 |
|
|
if (*symname) {
|
| 1001 |
|
|
do {
|
| 1002 |
|
|
symname++;
|
| 1003 |
|
|
} while (*symname == '/');
|
| 1004 |
|
|
}
|
| 1005 |
|
|
}
|
| 1006 |
|
|
|
| 1007 |
|
|
brelse(epos.bh);
|
| 1008 |
|
|
inode->i_size = elen;
|
| 1009 |
|
|
if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_IN_ICB)
|
| 1010 |
|
|
UDF_I_LENALLOC(inode) = inode->i_size;
|
| 1011 |
|
|
mark_inode_dirty(inode);
|
| 1012 |
|
|
|
| 1013 |
|
|
if (!(fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err)))
|
| 1014 |
|
|
goto out_no_entry;
|
| 1015 |
|
|
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
|
| 1016 |
|
|
cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(inode));
|
| 1017 |
|
|
if (UDF_SB_LVIDBH(inode->i_sb)) {
|
| 1018 |
|
|
struct logicalVolHeaderDesc *lvhd;
|
| 1019 |
|
|
uint64_t uniqueID;
|
| 1020 |
|
|
lvhd = (struct logicalVolHeaderDesc *)(UDF_SB_LVID(inode->i_sb)->logicalVolContentsUse);
|
| 1021 |
|
|
uniqueID = le64_to_cpu(lvhd->uniqueID);
|
| 1022 |
|
|
*(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
|
| 1023 |
|
|
cpu_to_le32(uniqueID & 0x00000000FFFFFFFFUL);
|
| 1024 |
|
|
if (!(++uniqueID & 0x00000000FFFFFFFFUL))
|
| 1025 |
|
|
uniqueID += 16;
|
| 1026 |
|
|
lvhd->uniqueID = cpu_to_le64(uniqueID);
|
| 1027 |
|
|
mark_buffer_dirty(UDF_SB_LVIDBH(inode->i_sb));
|
| 1028 |
|
|
}
|
| 1029 |
|
|
udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
|
| 1030 |
|
|
if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) {
|
| 1031 |
|
|
mark_inode_dirty(dir);
|
| 1032 |
|
|
}
|
| 1033 |
|
|
if (fibh.sbh != fibh.ebh)
|
| 1034 |
|
|
brelse(fibh.ebh);
|
| 1035 |
|
|
brelse(fibh.sbh);
|
| 1036 |
|
|
d_instantiate(dentry, inode);
|
| 1037 |
|
|
err = 0;
|
| 1038 |
|
|
|
| 1039 |
|
|
out:
|
| 1040 |
|
|
unlock_kernel();
|
| 1041 |
|
|
return err;
|
| 1042 |
|
|
|
| 1043 |
|
|
out_no_entry:
|
| 1044 |
|
|
inode_dec_link_count(inode);
|
| 1045 |
|
|
iput(inode);
|
| 1046 |
|
|
goto out;
|
| 1047 |
|
|
}
|
| 1048 |
|
|
|
| 1049 |
|
|
static int udf_link(struct dentry *old_dentry, struct inode *dir,
|
| 1050 |
|
|
struct dentry *dentry)
|
| 1051 |
|
|
{
|
| 1052 |
|
|
struct inode *inode = old_dentry->d_inode;
|
| 1053 |
|
|
struct udf_fileident_bh fibh;
|
| 1054 |
|
|
struct fileIdentDesc cfi, *fi;
|
| 1055 |
|
|
int err;
|
| 1056 |
|
|
|
| 1057 |
|
|
lock_kernel();
|
| 1058 |
|
|
if (inode->i_nlink >= (256 << sizeof(inode->i_nlink)) - 1) {
|
| 1059 |
|
|
unlock_kernel();
|
| 1060 |
|
|
return -EMLINK;
|
| 1061 |
|
|
}
|
| 1062 |
|
|
|
| 1063 |
|
|
if (!(fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err))) {
|
| 1064 |
|
|
unlock_kernel();
|
| 1065 |
|
|
return err;
|
| 1066 |
|
|
}
|
| 1067 |
|
|
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
|
| 1068 |
|
|
cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(inode));
|
| 1069 |
|
|
if (UDF_SB_LVIDBH(inode->i_sb)) {
|
| 1070 |
|
|
struct logicalVolHeaderDesc *lvhd;
|
| 1071 |
|
|
uint64_t uniqueID;
|
| 1072 |
|
|
lvhd = (struct logicalVolHeaderDesc *)(UDF_SB_LVID(inode->i_sb)->logicalVolContentsUse);
|
| 1073 |
|
|
uniqueID = le64_to_cpu(lvhd->uniqueID);
|
| 1074 |
|
|
*(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
|
| 1075 |
|
|
cpu_to_le32(uniqueID & 0x00000000FFFFFFFFUL);
|
| 1076 |
|
|
if (!(++uniqueID & 0x00000000FFFFFFFFUL))
|
| 1077 |
|
|
uniqueID += 16;
|
| 1078 |
|
|
lvhd->uniqueID = cpu_to_le64(uniqueID);
|
| 1079 |
|
|
mark_buffer_dirty(UDF_SB_LVIDBH(inode->i_sb));
|
| 1080 |
|
|
}
|
| 1081 |
|
|
udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
|
| 1082 |
|
|
if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) {
|
| 1083 |
|
|
mark_inode_dirty(dir);
|
| 1084 |
|
|
}
|
| 1085 |
|
|
|
| 1086 |
|
|
if (fibh.sbh != fibh.ebh)
|
| 1087 |
|
|
brelse(fibh.ebh);
|
| 1088 |
|
|
brelse(fibh.sbh);
|
| 1089 |
|
|
inc_nlink(inode);
|
| 1090 |
|
|
inode->i_ctime = current_fs_time(inode->i_sb);
|
| 1091 |
|
|
mark_inode_dirty(inode);
|
| 1092 |
|
|
atomic_inc(&inode->i_count);
|
| 1093 |
|
|
d_instantiate(dentry, inode);
|
| 1094 |
|
|
unlock_kernel();
|
| 1095 |
|
|
|
| 1096 |
|
|
return 0;
|
| 1097 |
|
|
}
|
| 1098 |
|
|
|
| 1099 |
|
|
/* Anybody can rename anything with this: the permission checks are left to the
|
| 1100 |
|
|
* higher-level routines.
|
| 1101 |
|
|
*/
|
| 1102 |
|
|
static int udf_rename(struct inode *old_dir, struct dentry *old_dentry,
|
| 1103 |
|
|
struct inode *new_dir, struct dentry *new_dentry)
|
| 1104 |
|
|
{
|
| 1105 |
|
|
struct inode *old_inode = old_dentry->d_inode;
|
| 1106 |
|
|
struct inode *new_inode = new_dentry->d_inode;
|
| 1107 |
|
|
struct udf_fileident_bh ofibh, nfibh;
|
| 1108 |
|
|
struct fileIdentDesc *ofi = NULL, *nfi = NULL, *dir_fi = NULL, ocfi, ncfi;
|
| 1109 |
|
|
struct buffer_head *dir_bh = NULL;
|
| 1110 |
|
|
int retval = -ENOENT;
|
| 1111 |
|
|
kernel_lb_addr tloc;
|
| 1112 |
|
|
|
| 1113 |
|
|
lock_kernel();
|
| 1114 |
|
|
if ((ofi = udf_find_entry(old_dir, old_dentry, &ofibh, &ocfi))) {
|
| 1115 |
|
|
if (ofibh.sbh != ofibh.ebh)
|
| 1116 |
|
|
brelse(ofibh.ebh);
|
| 1117 |
|
|
brelse(ofibh.sbh);
|
| 1118 |
|
|
}
|
| 1119 |
|
|
tloc = lelb_to_cpu(ocfi.icb.extLocation);
|
| 1120 |
|
|
if (!ofi || udf_get_lb_pblock(old_dir->i_sb, tloc, 0)
|
| 1121 |
|
|
!= old_inode->i_ino)
|
| 1122 |
|
|
goto end_rename;
|
| 1123 |
|
|
|
| 1124 |
|
|
nfi = udf_find_entry(new_dir, new_dentry, &nfibh, &ncfi);
|
| 1125 |
|
|
if (nfi) {
|
| 1126 |
|
|
if (!new_inode) {
|
| 1127 |
|
|
if (nfibh.sbh != nfibh.ebh)
|
| 1128 |
|
|
brelse(nfibh.ebh);
|
| 1129 |
|
|
brelse(nfibh.sbh);
|
| 1130 |
|
|
nfi = NULL;
|
| 1131 |
|
|
}
|
| 1132 |
|
|
}
|
| 1133 |
|
|
if (S_ISDIR(old_inode->i_mode)) {
|
| 1134 |
|
|
uint32_t offset = udf_ext0_offset(old_inode);
|
| 1135 |
|
|
|
| 1136 |
|
|
if (new_inode) {
|
| 1137 |
|
|
retval = -ENOTEMPTY;
|
| 1138 |
|
|
if (!empty_dir(new_inode))
|
| 1139 |
|
|
goto end_rename;
|
| 1140 |
|
|
}
|
| 1141 |
|
|
retval = -EIO;
|
| 1142 |
|
|
if (UDF_I_ALLOCTYPE(old_inode) == ICBTAG_FLAG_AD_IN_ICB) {
|
| 1143 |
|
|
dir_fi = udf_get_fileident(UDF_I_DATA(old_inode) -
|
| 1144 |
|
|
(UDF_I_EFE(old_inode) ?
|
| 1145 |
|
|
sizeof(struct extendedFileEntry) :
|
| 1146 |
|
|
sizeof(struct fileEntry)),
|
| 1147 |
|
|
old_inode->i_sb->s_blocksize, &offset);
|
| 1148 |
|
|
} else {
|
| 1149 |
|
|
dir_bh = udf_bread(old_inode, 0, 0, &retval);
|
| 1150 |
|
|
if (!dir_bh)
|
| 1151 |
|
|
goto end_rename;
|
| 1152 |
|
|
dir_fi = udf_get_fileident(dir_bh->b_data, old_inode->i_sb->s_blocksize, &offset);
|
| 1153 |
|
|
}
|
| 1154 |
|
|
if (!dir_fi)
|
| 1155 |
|
|
goto end_rename;
|
| 1156 |
|
|
tloc = lelb_to_cpu(dir_fi->icb.extLocation);
|
| 1157 |
|
|
if (udf_get_lb_pblock(old_inode->i_sb, tloc, 0) != old_dir->i_ino)
|
| 1158 |
|
|
goto end_rename;
|
| 1159 |
|
|
|
| 1160 |
|
|
retval = -EMLINK;
|
| 1161 |
|
|
if (!new_inode && new_dir->i_nlink >= (256 << sizeof(new_dir->i_nlink)) - 1)
|
| 1162 |
|
|
goto end_rename;
|
| 1163 |
|
|
}
|
| 1164 |
|
|
if (!nfi) {
|
| 1165 |
|
|
nfi = udf_add_entry(new_dir, new_dentry, &nfibh, &ncfi, &retval);
|
| 1166 |
|
|
if (!nfi)
|
| 1167 |
|
|
goto end_rename;
|
| 1168 |
|
|
}
|
| 1169 |
|
|
|
| 1170 |
|
|
/*
|
| 1171 |
|
|
* Like most other Unix systems, set the ctime for inodes on a
|
| 1172 |
|
|
* rename.
|
| 1173 |
|
|
*/
|
| 1174 |
|
|
old_inode->i_ctime = current_fs_time(old_inode->i_sb);
|
| 1175 |
|
|
mark_inode_dirty(old_inode);
|
| 1176 |
|
|
|
| 1177 |
|
|
/*
|
| 1178 |
|
|
* ok, that's it
|
| 1179 |
|
|
*/
|
| 1180 |
|
|
ncfi.fileVersionNum = ocfi.fileVersionNum;
|
| 1181 |
|
|
ncfi.fileCharacteristics = ocfi.fileCharacteristics;
|
| 1182 |
|
|
memcpy(&(ncfi.icb), &(ocfi.icb), sizeof(long_ad));
|
| 1183 |
|
|
udf_write_fi(new_dir, &ncfi, nfi, &nfibh, NULL, NULL);
|
| 1184 |
|
|
|
| 1185 |
|
|
/* The old fid may have moved - find it again */
|
| 1186 |
|
|
ofi = udf_find_entry(old_dir, old_dentry, &ofibh, &ocfi);
|
| 1187 |
|
|
udf_delete_entry(old_dir, ofi, &ofibh, &ocfi);
|
| 1188 |
|
|
|
| 1189 |
|
|
if (new_inode) {
|
| 1190 |
|
|
new_inode->i_ctime = current_fs_time(new_inode->i_sb);
|
| 1191 |
|
|
inode_dec_link_count(new_inode);
|
| 1192 |
|
|
}
|
| 1193 |
|
|
old_dir->i_ctime = old_dir->i_mtime = current_fs_time(old_dir->i_sb);
|
| 1194 |
|
|
mark_inode_dirty(old_dir);
|
| 1195 |
|
|
|
| 1196 |
|
|
if (dir_fi) {
|
| 1197 |
|
|
dir_fi->icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(new_dir));
|
| 1198 |
|
|
udf_update_tag((char *)dir_fi, (sizeof(struct fileIdentDesc) +
|
| 1199 |
|
|
le16_to_cpu(dir_fi->lengthOfImpUse) + 3) & ~3);
|
| 1200 |
|
|
if (UDF_I_ALLOCTYPE(old_inode) == ICBTAG_FLAG_AD_IN_ICB) {
|
| 1201 |
|
|
mark_inode_dirty(old_inode);
|
| 1202 |
|
|
} else {
|
| 1203 |
|
|
mark_buffer_dirty_inode(dir_bh, old_inode);
|
| 1204 |
|
|
}
|
| 1205 |
|
|
inode_dec_link_count(old_dir);
|
| 1206 |
|
|
if (new_inode) {
|
| 1207 |
|
|
inode_dec_link_count(new_inode);
|
| 1208 |
|
|
} else {
|
| 1209 |
|
|
inc_nlink(new_dir);
|
| 1210 |
|
|
mark_inode_dirty(new_dir);
|
| 1211 |
|
|
}
|
| 1212 |
|
|
}
|
| 1213 |
|
|
|
| 1214 |
|
|
if (ofi) {
|
| 1215 |
|
|
if (ofibh.sbh != ofibh.ebh)
|
| 1216 |
|
|
brelse(ofibh.ebh);
|
| 1217 |
|
|
brelse(ofibh.sbh);
|
| 1218 |
|
|
}
|
| 1219 |
|
|
|
| 1220 |
|
|
retval = 0;
|
| 1221 |
|
|
|
| 1222 |
|
|
end_rename:
|
| 1223 |
|
|
brelse(dir_bh);
|
| 1224 |
|
|
if (nfi) {
|
| 1225 |
|
|
if (nfibh.sbh != nfibh.ebh)
|
| 1226 |
|
|
brelse(nfibh.ebh);
|
| 1227 |
|
|
brelse(nfibh.sbh);
|
| 1228 |
|
|
}
|
| 1229 |
|
|
unlock_kernel();
|
| 1230 |
|
|
|
| 1231 |
|
|
return retval;
|
| 1232 |
|
|
}
|
| 1233 |
|
|
|
| 1234 |
|
|
const struct inode_operations udf_dir_inode_operations = {
|
| 1235 |
|
|
.lookup = udf_lookup,
|
| 1236 |
|
|
.create = udf_create,
|
| 1237 |
|
|
.link = udf_link,
|
| 1238 |
|
|
.unlink = udf_unlink,
|
| 1239 |
|
|
.symlink = udf_symlink,
|
| 1240 |
|
|
.mkdir = udf_mkdir,
|
| 1241 |
|
|
.rmdir = udf_rmdir,
|
| 1242 |
|
|
.mknod = udf_mknod,
|
| 1243 |
|
|
.rename = udf_rename,
|
| 1244 |
|
|
};
|
