| /* |
| * namei.c |
| * |
| * PURPOSE |
| * Inode name handling routines for the OSTA-UDF(tm) filesystem. |
| * |
| * CONTACTS |
| * E-mail regarding any portion of the Linux UDF file system should be |
| * directed to the development team mailing list (run by majordomo): |
| * linux_udf@hpesjro.fc.hp.com |
| * |
| * COPYRIGHT |
| * This file is distributed under the terms of the GNU General Public |
| * License (GPL). Copies of the GPL can be obtained from: |
| * ftp://prep.ai.mit.edu/pub/gnu/GPL |
| * Each contributing author retains all rights to their own work. |
| * |
| * (C) 1998-2004 Ben Fennema |
| * (C) 1999-2000 Stelias Computing Inc |
| * |
| * HISTORY |
| * |
| * 12/12/98 blf Created. Split out the lookup code from dir.c |
| * 04/19/99 blf link, mknod, symlink support |
| */ |
| |
| #include "udfdecl.h" |
| |
| #include "udf_i.h" |
| #include "udf_sb.h" |
| #include <linux/string.h> |
| #include <linux/errno.h> |
| #include <linux/mm.h> |
| #include <linux/slab.h> |
| #include <linux/quotaops.h> |
| #include <linux/smp_lock.h> |
| #include <linux/buffer_head.h> |
| |
| static inline int udf_match(int len1, const char *name1, int len2, const char *name2) |
| { |
| if (len1 != len2) |
| return 0; |
| return !memcmp(name1, name2, len1); |
| } |
| |
| int udf_write_fi(struct inode *inode, struct fileIdentDesc *cfi, |
| struct fileIdentDesc *sfi, struct udf_fileident_bh *fibh, |
| uint8_t *impuse, uint8_t *fileident) |
| { |
| uint16_t crclen = fibh->eoffset - fibh->soffset - sizeof(tag); |
| uint16_t crc; |
| uint8_t checksum = 0; |
| int i; |
| int offset; |
| uint16_t liu = le16_to_cpu(cfi->lengthOfImpUse); |
| uint8_t lfi = cfi->lengthFileIdent; |
| int padlen = fibh->eoffset - fibh->soffset - liu - lfi - |
| sizeof(struct fileIdentDesc); |
| int adinicb = 0; |
| |
| if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_IN_ICB) |
| adinicb = 1; |
| |
| offset = fibh->soffset + sizeof(struct fileIdentDesc); |
| |
| if (impuse) |
| { |
| if (adinicb || (offset + liu < 0)) |
| memcpy((uint8_t *)sfi->impUse, impuse, liu); |
| else if (offset >= 0) |
| memcpy(fibh->ebh->b_data + offset, impuse, liu); |
| else |
| { |
| memcpy((uint8_t *)sfi->impUse, impuse, -offset); |
| memcpy(fibh->ebh->b_data, impuse - offset, liu + offset); |
| } |
| } |
| |
| offset += liu; |
| |
| if (fileident) |
| { |
| if (adinicb || (offset + lfi < 0)) |
| memcpy((uint8_t *)sfi->fileIdent + liu, fileident, lfi); |
| else if (offset >= 0) |
| memcpy(fibh->ebh->b_data + offset, fileident, lfi); |
| else |
| { |
| memcpy((uint8_t *)sfi->fileIdent + liu, fileident, -offset); |
| memcpy(fibh->ebh->b_data, fileident - offset, lfi + offset); |
| } |
| } |
| |
| offset += lfi; |
| |
| if (adinicb || (offset + padlen < 0)) |
| memset((uint8_t *)sfi->padding + liu + lfi, 0x00, padlen); |
| else if (offset >= 0) |
| memset(fibh->ebh->b_data + offset, 0x00, padlen); |
| else |
| { |
| memset((uint8_t *)sfi->padding + liu + lfi, 0x00, -offset); |
| memset(fibh->ebh->b_data, 0x00, padlen + offset); |
| } |
| |
| crc = udf_crc((uint8_t *)cfi + sizeof(tag), sizeof(struct fileIdentDesc) - |
| sizeof(tag), 0); |
| |
| if (fibh->sbh == fibh->ebh) |
| crc = udf_crc((uint8_t *)sfi->impUse, |
| crclen + sizeof(tag) - sizeof(struct fileIdentDesc), crc); |
| else if (sizeof(struct fileIdentDesc) >= -fibh->soffset) |
| crc = udf_crc(fibh->ebh->b_data + sizeof(struct fileIdentDesc) + fibh->soffset, |
| crclen + sizeof(tag) - sizeof(struct fileIdentDesc), crc); |
| else |
| { |
| crc = udf_crc((uint8_t *)sfi->impUse, |
| -fibh->soffset - sizeof(struct fileIdentDesc), crc); |
| crc = udf_crc(fibh->ebh->b_data, fibh->eoffset, crc); |
| } |
| |
| cfi->descTag.descCRC = cpu_to_le16(crc); |
| cfi->descTag.descCRCLength = cpu_to_le16(crclen); |
| |
| for (i=0; i<16; i++) |
| if (i != 4) |
| checksum += ((uint8_t *)&cfi->descTag)[i]; |
| |
| cfi->descTag.tagChecksum = checksum; |
| if (adinicb || (sizeof(struct fileIdentDesc) <= -fibh->soffset)) |
| memcpy((uint8_t *)sfi, (uint8_t *)cfi, sizeof(struct fileIdentDesc)); |
| else |
| { |
| memcpy((uint8_t *)sfi, (uint8_t *)cfi, -fibh->soffset); |
| memcpy(fibh->ebh->b_data, (uint8_t *)cfi - fibh->soffset, |
| sizeof(struct fileIdentDesc) + fibh->soffset); |
| } |
| |
| if (adinicb) |
| mark_inode_dirty(inode); |
| else |
| { |
| if (fibh->sbh != fibh->ebh) |
| mark_buffer_dirty_inode(fibh->ebh, inode); |
| mark_buffer_dirty_inode(fibh->sbh, inode); |
| } |
| return 0; |
| } |
| |
| static struct fileIdentDesc * |
| udf_find_entry(struct inode *dir, struct dentry *dentry, |
| struct udf_fileident_bh *fibh, |
| struct fileIdentDesc *cfi) |
| { |
| struct fileIdentDesc *fi=NULL; |
| loff_t f_pos; |
| int block, flen; |
| char fname[UDF_NAME_LEN]; |
| char *nameptr; |
| uint8_t lfi; |
| uint16_t liu; |
| loff_t size; |
| kernel_lb_addr bloc, eloc; |
| uint32_t extoffset, elen, offset; |
| struct buffer_head *bh = NULL; |
| |
| if (!dir) |
| return NULL; |
| |
| size = (udf_ext0_offset(dir) + dir->i_size) >> 2; |
| |
| f_pos = (udf_ext0_offset(dir) >> 2); |
| |
| fibh->soffset = fibh->eoffset = (f_pos & ((dir->i_sb->s_blocksize - 1) >> 2)) << 2; |
| if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) |
| fibh->sbh = fibh->ebh = NULL; |
| else if (inode_bmap(dir, f_pos >> (dir->i_sb->s_blocksize_bits - 2), |
| &bloc, &extoffset, &eloc, &elen, &offset, &bh) == (EXT_RECORDED_ALLOCATED >> 30)) |
| { |
| offset >>= dir->i_sb->s_blocksize_bits; |
| block = udf_get_lb_pblock(dir->i_sb, eloc, offset); |
| if ((++offset << dir->i_sb->s_blocksize_bits) < elen) |
| { |
| if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_SHORT) |
| extoffset -= sizeof(short_ad); |
| else if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_LONG) |
| extoffset -= sizeof(long_ad); |
| } |
| else |
| offset = 0; |
| |
| if (!(fibh->sbh = fibh->ebh = udf_tread(dir->i_sb, block))) |
| { |
| udf_release_data(bh); |
| return NULL; |
| } |
| } |
| else |
| { |
| udf_release_data(bh); |
| return NULL; |
| } |
| |
| while ( (f_pos < size) ) |
| { |
| fi = udf_fileident_read(dir, &f_pos, fibh, cfi, &bloc, &extoffset, &eloc, &elen, &offset, &bh); |
| |
| if (!fi) |
| { |
| if (fibh->sbh != fibh->ebh) |
| udf_release_data(fibh->ebh); |
| udf_release_data(fibh->sbh); |
| udf_release_data(bh); |
| return NULL; |
| } |
| |
| liu = le16_to_cpu(cfi->lengthOfImpUse); |
| lfi = cfi->lengthFileIdent; |
| |
| if (fibh->sbh == fibh->ebh) |
| { |
| nameptr = fi->fileIdent + liu; |
| } |
| else |
| { |
| int poffset; /* Unpaded ending offset */ |
| |
| poffset = fibh->soffset + sizeof(struct fileIdentDesc) + liu + lfi; |
| |
| if (poffset >= lfi) |
| nameptr = (uint8_t *)(fibh->ebh->b_data + poffset - lfi); |
| else |
| { |
| nameptr = fname; |
| memcpy(nameptr, fi->fileIdent + liu, lfi - poffset); |
| memcpy(nameptr + lfi - poffset, fibh->ebh->b_data, poffset); |
| } |
| } |
| |
| if ( (cfi->fileCharacteristics & FID_FILE_CHAR_DELETED) != 0 ) |
| { |
| if ( !UDF_QUERY_FLAG(dir->i_sb, UDF_FLAG_UNDELETE) ) |
| continue; |
| } |
| |
| if ( (cfi->fileCharacteristics & FID_FILE_CHAR_HIDDEN) != 0 ) |
| { |
| if ( !UDF_QUERY_FLAG(dir->i_sb, UDF_FLAG_UNHIDE) ) |
| continue; |
| } |
| |
| if (!lfi) |
| continue; |
| |
| if ((flen = udf_get_filename(dir->i_sb, nameptr, fname, lfi))) |
| { |
| if (udf_match(flen, fname, dentry->d_name.len, dentry->d_name.name)) |
| { |
| udf_release_data(bh); |
| return fi; |
| } |
| } |
| } |
| if (fibh->sbh != fibh->ebh) |
| udf_release_data(fibh->ebh); |
| udf_release_data(fibh->sbh); |
| udf_release_data(bh); |
| return NULL; |
| } |
| |
| /* |
| * udf_lookup |
| * |
| * PURPOSE |
| * Look-up the inode for a given name. |
| * |
| * DESCRIPTION |
| * Required - lookup_dentry() will return -ENOTDIR if this routine is not |
| * available for a directory. The filesystem is useless if this routine is |
| * not available for at least the filesystem's root directory. |
| * |
| * This routine is passed an incomplete dentry - it must be completed by |
| * calling d_add(dentry, inode). If the name does not exist, then the |
| * specified inode must be set to null. An error should only be returned |
| * when the lookup fails for a reason other than the name not existing. |
| * Note that the directory inode semaphore is held during the call. |
| * |
| * Refer to lookup_dentry() in fs/namei.c |
| * lookup_dentry() -> lookup() -> real_lookup() -> . |
| * |
| * PRE-CONDITIONS |
| * dir Pointer to inode of parent directory. |
| * dentry Pointer to dentry to complete. |
| * nd Pointer to lookup nameidata |
| * |
| * POST-CONDITIONS |
| * <return> Zero on success. |
| * |
| * HISTORY |
| * July 1, 1997 - Andrew E. Mileski |
| * Written, tested, and released. |
| */ |
| |
| static struct dentry * |
| udf_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd) |
| { |
| struct inode *inode = NULL; |
| struct fileIdentDesc cfi, *fi; |
| struct udf_fileident_bh fibh; |
| |
| if (dentry->d_name.len > UDF_NAME_LEN-2) |
| return ERR_PTR(-ENAMETOOLONG); |
| |
| lock_kernel(); |
| #ifdef UDF_RECOVERY |
| /* temporary shorthand for specifying files by inode number */ |
| if (!strncmp(dentry->d_name.name, ".B=", 3) ) |
| { |
| kernel_lb_addr lb = { 0, simple_strtoul(dentry->d_name.name+3, NULL, 0) }; |
| inode = udf_iget(dir->i_sb, lb); |
| if (!inode) |
| { |
| unlock_kernel(); |
| return ERR_PTR(-EACCES); |
| } |
| } |
| else |
| #endif /* UDF_RECOVERY */ |
| |
| if ((fi = udf_find_entry(dir, dentry, &fibh, &cfi))) |
| { |
| if (fibh.sbh != fibh.ebh) |
| udf_release_data(fibh.ebh); |
| udf_release_data(fibh.sbh); |
| |
| inode = udf_iget(dir->i_sb, lelb_to_cpu(cfi.icb.extLocation)); |
| if ( !inode ) |
| { |
| unlock_kernel(); |
| return ERR_PTR(-EACCES); |
| } |
| } |
| unlock_kernel(); |
| d_add(dentry, inode); |
| return NULL; |
| } |
| |
| static struct fileIdentDesc * |
| udf_add_entry(struct inode *dir, struct dentry *dentry, |
| struct udf_fileident_bh *fibh, |
| struct fileIdentDesc *cfi, int *err) |
| { |
| struct super_block *sb; |
| struct fileIdentDesc *fi=NULL; |
| char name[UDF_NAME_LEN], fname[UDF_NAME_LEN]; |
| int namelen; |
| loff_t f_pos; |
| int flen; |
| char *nameptr; |
| loff_t size = (udf_ext0_offset(dir) + dir->i_size) >> 2; |
| int nfidlen; |
| uint8_t lfi; |
| uint16_t liu; |
| int block; |
| kernel_lb_addr bloc, eloc; |
| uint32_t extoffset, elen, offset; |
| struct buffer_head *bh = NULL; |
| |
| sb = dir->i_sb; |
| |
| if (dentry) |
| { |
| if (!dentry->d_name.len) |
| { |
| *err = -EINVAL; |
| return NULL; |
| } |
| |
| if ( !(namelen = udf_put_filename(sb, dentry->d_name.name, name, dentry->d_name.len))) |
| { |
| *err = -ENAMETOOLONG; |
| return NULL; |
| } |
| } |
| else |
| namelen = 0; |
| |
| nfidlen = (sizeof(struct fileIdentDesc) + namelen + 3) & ~3; |
| |
| f_pos = (udf_ext0_offset(dir) >> 2); |
| |
| fibh->soffset = fibh->eoffset = (f_pos & ((dir->i_sb->s_blocksize - 1) >> 2)) << 2; |
| if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) |
| fibh->sbh = fibh->ebh = NULL; |
| else if (inode_bmap(dir, f_pos >> (dir->i_sb->s_blocksize_bits - 2), |
| &bloc, &extoffset, &eloc, &elen, &offset, &bh) == (EXT_RECORDED_ALLOCATED >> 30)) |
| { |
| offset >>= dir->i_sb->s_blocksize_bits; |
| block = udf_get_lb_pblock(dir->i_sb, eloc, offset); |
| if ((++offset << dir->i_sb->s_blocksize_bits) < elen) |
| { |
| if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_SHORT) |
| extoffset -= sizeof(short_ad); |
| else if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_LONG) |
| extoffset -= sizeof(long_ad); |
| } |
| else |
| offset = 0; |
| |
| if (!(fibh->sbh = fibh->ebh = udf_tread(dir->i_sb, block))) |
| { |
| udf_release_data(bh); |
| *err = -EIO; |
| return NULL; |
| } |
| |
| block = UDF_I_LOCATION(dir).logicalBlockNum; |
| |
| } |
| else |
| { |
| block = udf_get_lb_pblock(dir->i_sb, UDF_I_LOCATION(dir), 0); |
| fibh->sbh = fibh->ebh = NULL; |
| fibh->soffset = fibh->eoffset = sb->s_blocksize; |
| goto add; |
| } |
| |
| while ( (f_pos < size) ) |
| { |
| fi = udf_fileident_read(dir, &f_pos, fibh, cfi, &bloc, &extoffset, &eloc, &elen, &offset, &bh); |
| |
| if (!fi) |
| { |
| if (fibh->sbh != fibh->ebh) |
| udf_release_data(fibh->ebh); |
| udf_release_data(fibh->sbh); |
| udf_release_data(bh); |
| *err = -EIO; |
| return NULL; |
| } |
| |
| liu = le16_to_cpu(cfi->lengthOfImpUse); |
| lfi = cfi->lengthFileIdent; |
| |
| if (fibh->sbh == fibh->ebh) |
| nameptr = fi->fileIdent + liu; |
| else |
| { |
| int poffset; /* Unpaded ending offset */ |
| |
| poffset = fibh->soffset + sizeof(struct fileIdentDesc) + liu + lfi; |
| |
| if (poffset >= lfi) |
| nameptr = (char *)(fibh->ebh->b_data + poffset - lfi); |
| else |
| { |
| nameptr = fname; |
| memcpy(nameptr, fi->fileIdent + liu, lfi - poffset); |
| memcpy(nameptr + lfi - poffset, fibh->ebh->b_data, poffset); |
| } |
| } |
| |
| if ( (cfi->fileCharacteristics & FID_FILE_CHAR_DELETED) != 0 ) |
| { |
| if (((sizeof(struct fileIdentDesc) + liu + lfi + 3) & ~3) == nfidlen) |
| { |
| udf_release_data(bh); |
| cfi->descTag.tagSerialNum = cpu_to_le16(1); |
| cfi->fileVersionNum = cpu_to_le16(1); |
| cfi->fileCharacteristics = 0; |
| cfi->lengthFileIdent = namelen; |
| cfi->lengthOfImpUse = cpu_to_le16(0); |
| if (!udf_write_fi(dir, cfi, fi, fibh, NULL, name)) |
| return fi; |
| else |
| { |
| *err = -EIO; |
| return NULL; |
| } |
| } |
| } |
| |
| if (!lfi || !dentry) |
| continue; |
| |
| if ((flen = udf_get_filename(dir->i_sb, nameptr, fname, lfi)) && |
| udf_match(flen, fname, dentry->d_name.len, dentry->d_name.name)) |
| { |
| if (fibh->sbh != fibh->ebh) |
| udf_release_data(fibh->ebh); |
| udf_release_data(fibh->sbh); |
| udf_release_data(bh); |
| *err = -EEXIST; |
| return NULL; |
| } |
| } |
| |
| add: |
| f_pos += nfidlen; |
| |
| if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB && |
| sb->s_blocksize - fibh->eoffset < nfidlen) |
| { |
| udf_release_data(bh); |
| bh = NULL; |
| fibh->soffset -= udf_ext0_offset(dir); |
| fibh->eoffset -= udf_ext0_offset(dir); |
| f_pos -= (udf_ext0_offset(dir) >> 2); |
| if (fibh->sbh != fibh->ebh) |
| udf_release_data(fibh->ebh); |
| udf_release_data(fibh->sbh); |
| if (!(fibh->sbh = fibh->ebh = udf_expand_dir_adinicb(dir, &block, err))) |
| return NULL; |
| bloc = UDF_I_LOCATION(dir); |
| eloc.logicalBlockNum = block; |
| eloc.partitionReferenceNum = UDF_I_LOCATION(dir).partitionReferenceNum; |
| elen = dir->i_sb->s_blocksize; |
| extoffset = udf_file_entry_alloc_offset(dir); |
| if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_SHORT) |
| extoffset += sizeof(short_ad); |
| else if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_LONG) |
| extoffset += sizeof(long_ad); |
| } |
| |
| if (sb->s_blocksize - fibh->eoffset >= nfidlen) |
| { |
| fibh->soffset = fibh->eoffset; |
| fibh->eoffset += nfidlen; |
| if (fibh->sbh != fibh->ebh) |
| { |
| udf_release_data(fibh->sbh); |
| fibh->sbh = fibh->ebh; |
| } |
| |
| if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) |
| { |
| block = UDF_I_LOCATION(dir).logicalBlockNum; |
| fi = (struct fileIdentDesc *)(UDF_I_DATA(dir) + fibh->soffset - udf_ext0_offset(dir) + UDF_I_LENEATTR(dir)); |
| } |
| else |
| { |
| block = eloc.logicalBlockNum + ((elen - 1) >> |
| dir->i_sb->s_blocksize_bits); |
| fi = (struct fileIdentDesc *)(fibh->sbh->b_data + fibh->soffset); |
| } |
| } |
| else |
| { |
| fibh->soffset = fibh->eoffset - sb->s_blocksize; |
| fibh->eoffset += nfidlen - sb->s_blocksize; |
| if (fibh->sbh != fibh->ebh) |
| { |
| udf_release_data(fibh->sbh); |
| fibh->sbh = fibh->ebh; |
| } |
| |
| block = eloc.logicalBlockNum + ((elen - 1) >> |
| dir->i_sb->s_blocksize_bits); |
| |
| if (!(fibh->ebh = udf_bread(dir, f_pos >> (dir->i_sb->s_blocksize_bits - 2), 1, err))) |
| { |
| udf_release_data(bh); |
| udf_release_data(fibh->sbh); |
| return NULL; |
| } |
| |
| if (!(fibh->soffset)) |
| { |
| if (udf_next_aext(dir, &bloc, &extoffset, &eloc, &elen, &bh, 1) == |
| (EXT_RECORDED_ALLOCATED >> 30)) |
| { |
| block = eloc.logicalBlockNum + ((elen - 1) >> |
| dir->i_sb->s_blocksize_bits); |
| } |
| else |
| block ++; |
| |
| udf_release_data(fibh->sbh); |
| fibh->sbh = fibh->ebh; |
| fi = (struct fileIdentDesc *)(fibh->sbh->b_data); |
| } |
| else |
| { |
| fi = (struct fileIdentDesc *) |
| (fibh->sbh->b_data + sb->s_blocksize + fibh->soffset); |
| } |
| } |
| |
| memset(cfi, 0, sizeof(struct fileIdentDesc)); |
| if (UDF_SB_UDFREV(sb) >= 0x0200) |
| udf_new_tag((char *)cfi, TAG_IDENT_FID, 3, 1, block, sizeof(tag)); |
| else |
| udf_new_tag((char *)cfi, TAG_IDENT_FID, 2, 1, block, sizeof(tag)); |
| cfi->fileVersionNum = cpu_to_le16(1); |
| cfi->lengthFileIdent = namelen; |
| cfi->lengthOfImpUse = cpu_to_le16(0); |
| if (!udf_write_fi(dir, cfi, fi, fibh, NULL, name)) |
| { |
| udf_release_data(bh); |
| dir->i_size += nfidlen; |
| if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) |
| UDF_I_LENALLOC(dir) += nfidlen; |
| mark_inode_dirty(dir); |
| return fi; |
| } |
| else |
| { |
| udf_release_data(bh); |
| if (fibh->sbh != fibh->ebh) |
| udf_release_data(fibh->ebh); |
| udf_release_data(fibh->sbh); |
| *err = -EIO; |
| return NULL; |
| } |
| } |
| |
| static int udf_delete_entry(struct inode *inode, struct fileIdentDesc *fi, |
| struct udf_fileident_bh *fibh, struct fileIdentDesc *cfi) |
| { |
| cfi->fileCharacteristics |= FID_FILE_CHAR_DELETED; |
| if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT)) |
| memset(&(cfi->icb), 0x00, sizeof(long_ad)); |
| return udf_write_fi(inode, cfi, fi, fibh, NULL, NULL); |
| } |
| |
| static int udf_create(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd) |
| { |
| struct udf_fileident_bh fibh; |
| struct inode *inode; |
| struct fileIdentDesc cfi, *fi; |
| int err; |
| |
| lock_kernel(); |
| inode = udf_new_inode(dir, mode, &err); |
| if (!inode) |
| { |
| unlock_kernel(); |
| return err; |
| } |
| |
| if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_IN_ICB) |
| inode->i_data.a_ops = &udf_adinicb_aops; |
| else |
| inode->i_data.a_ops = &udf_aops; |
| inode->i_op = &udf_file_inode_operations; |
| inode->i_fop = &udf_file_operations; |
| inode->i_mode = mode; |
| mark_inode_dirty(inode); |
| |
| if (!(fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err))) |
| { |
| inode->i_nlink --; |
| mark_inode_dirty(inode); |
| iput(inode); |
| unlock_kernel(); |
| return err; |
| } |
| cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize); |
| cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(inode)); |
| *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse = |
| cpu_to_le32(UDF_I_UNIQUE(inode) & 0x00000000FFFFFFFFUL); |
| udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL); |
| if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) |
| { |
| mark_inode_dirty(dir); |
| } |
| if (fibh.sbh != fibh.ebh) |
| udf_release_data(fibh.ebh); |
| udf_release_data(fibh.sbh); |
| unlock_kernel(); |
| d_instantiate(dentry, inode); |
| return 0; |
| } |
| |
| static int udf_mknod(struct inode * dir, struct dentry * dentry, int mode, dev_t rdev) |
| { |
| struct inode * inode; |
| struct udf_fileident_bh fibh; |
| struct fileIdentDesc cfi, *fi; |
| int err; |
| |
| if (!old_valid_dev(rdev)) |
| return -EINVAL; |
| |
| lock_kernel(); |
| err = -EIO; |
| inode = udf_new_inode(dir, mode, &err); |
| if (!inode) |
| goto out; |
| |
| inode->i_uid = current->fsuid; |
| init_special_inode(inode, mode, rdev); |
| if (!(fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err))) |
| { |
| inode->i_nlink --; |
| mark_inode_dirty(inode); |
| iput(inode); |
| unlock_kernel(); |
| return err; |
| } |
| cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize); |
| cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(inode)); |
| *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse = |
| cpu_to_le32(UDF_I_UNIQUE(inode) & 0x00000000FFFFFFFFUL); |
| udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL); |
| if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) |
| { |
| mark_inode_dirty(dir); |
| } |
| mark_inode_dirty(inode); |
| |
| if (fibh.sbh != fibh.ebh) |
| udf_release_data(fibh.ebh); |
| udf_release_data(fibh.sbh); |
| d_instantiate(dentry, inode); |
| err = 0; |
| out: |
| unlock_kernel(); |
| return err; |
| } |
| |
| static int udf_mkdir(struct inode * dir, struct dentry * dentry, int mode) |
| { |
| struct inode * inode; |
| struct udf_fileident_bh fibh; |
| struct fileIdentDesc cfi, *fi; |
| int err; |
| |
| lock_kernel(); |
| err = -EMLINK; |
| if (dir->i_nlink >= (256<<sizeof(dir->i_nlink))-1) |
| goto out; |
| |
| err = -EIO; |
| inode = udf_new_inode(dir, S_IFDIR, &err); |
| if (!inode) |
| goto out; |
| |
| inode->i_op = &udf_dir_inode_operations; |
| inode->i_fop = &udf_dir_operations; |
| if (!(fi = udf_add_entry(inode, NULL, &fibh, &cfi, &err))) |
| { |
| inode->i_nlink--; |
| mark_inode_dirty(inode); |
| iput(inode); |
| goto out; |
| } |
| inode->i_nlink = 2; |
| cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize); |
| cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(dir)); |
| *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse = |
| cpu_to_le32(UDF_I_UNIQUE(dir) & 0x00000000FFFFFFFFUL); |
| cfi.fileCharacteristics = FID_FILE_CHAR_DIRECTORY | FID_FILE_CHAR_PARENT; |
| udf_write_fi(inode, &cfi, fi, &fibh, NULL, NULL); |
| udf_release_data(fibh.sbh); |
| inode->i_mode = S_IFDIR | mode; |
| if (dir->i_mode & S_ISGID) |
| inode->i_mode |= S_ISGID; |
| mark_inode_dirty(inode); |
| |
| if (!(fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err))) |
| { |
| inode->i_nlink = 0; |
| mark_inode_dirty(inode); |
| iput(inode); |
| goto out; |
| } |
| cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize); |
| cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(inode)); |
| *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse = |
| cpu_to_le32(UDF_I_UNIQUE(inode) & 0x00000000FFFFFFFFUL); |
| cfi.fileCharacteristics |= FID_FILE_CHAR_DIRECTORY; |
| udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL); |
| dir->i_nlink++; |
| mark_inode_dirty(dir); |
| d_instantiate(dentry, inode); |
| if (fibh.sbh != fibh.ebh) |
| udf_release_data(fibh.ebh); |
| udf_release_data(fibh.sbh); |
| err = 0; |
| out: |
| unlock_kernel(); |
| return err; |
| } |
| |
| static int empty_dir(struct inode *dir) |
| { |
| struct fileIdentDesc *fi, cfi; |
| struct udf_fileident_bh fibh; |
| loff_t f_pos; |
| loff_t size = (udf_ext0_offset(dir) + dir->i_size) >> 2; |
| int block; |
| kernel_lb_addr bloc, eloc; |
| uint32_t extoffset, elen, offset; |
| struct buffer_head *bh = NULL; |
| |
| f_pos = (udf_ext0_offset(dir) >> 2); |
| |
| fibh.soffset = fibh.eoffset = (f_pos & ((dir->i_sb->s_blocksize - 1) >> 2)) << 2; |
| |
| if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) |
| fibh.sbh = fibh.ebh = NULL; |
| else if (inode_bmap(dir, f_pos >> (dir->i_sb->s_blocksize_bits - 2), |
| &bloc, &extoffset, &eloc, &elen, &offset, &bh) == (EXT_RECORDED_ALLOCATED >> 30)) |
| { |
| offset >>= dir->i_sb->s_blocksize_bits; |
| block = udf_get_lb_pblock(dir->i_sb, eloc, offset); |
| if ((++offset << dir->i_sb->s_blocksize_bits) < elen) |
| { |
| if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_SHORT) |
| extoffset -= sizeof(short_ad); |
| else if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_LONG) |
| extoffset -= sizeof(long_ad); |
| } |
| else |
| offset = 0; |
| |
| if (!(fibh.sbh = fibh.ebh = udf_tread(dir->i_sb, block))) |
| { |
| udf_release_data(bh); |
| return 0; |
| } |
| } |
| else |
| { |
| udf_release_data(bh); |
| return 0; |
| } |
| |
| |
| while ( (f_pos < size) ) |
| { |
| fi = udf_fileident_read(dir, &f_pos, &fibh, &cfi, &bloc, &extoffset, &eloc, &elen, &offset, &bh); |
| |
| if (!fi) |
| { |
| if (fibh.sbh != fibh.ebh) |
| udf_release_data(fibh.ebh); |
| udf_release_data(fibh.sbh); |
| udf_release_data(bh); |
| return 0; |
| } |
| |
| if (cfi.lengthFileIdent && (cfi.fileCharacteristics & FID_FILE_CHAR_DELETED) == 0) |
| { |
| if (fibh.sbh != fibh.ebh) |
| udf_release_data(fibh.ebh); |
| udf_release_data(fibh.sbh); |
| udf_release_data(bh); |
| return 0; |
| } |
| } |
| if (fibh.sbh != fibh.ebh) |
| udf_release_data(fibh.ebh); |
| udf_release_data(fibh.sbh); |
| udf_release_data(bh); |
| return 1; |
| } |
| |
| static int udf_rmdir(struct inode * dir, struct dentry * dentry) |
| { |
| int retval; |
| struct inode * inode = dentry->d_inode; |
| struct udf_fileident_bh fibh; |
| struct fileIdentDesc *fi, cfi; |
| kernel_lb_addr tloc; |
| |
| retval = -ENOENT; |
| lock_kernel(); |
| fi = udf_find_entry(dir, dentry, &fibh, &cfi); |
| if (!fi) |
| goto out; |
| |
| retval = -EIO; |
| tloc = lelb_to_cpu(cfi.icb.extLocation); |
| if (udf_get_lb_pblock(dir->i_sb, tloc, 0) != inode->i_ino) |
| goto end_rmdir; |
| retval = -ENOTEMPTY; |
| if (!empty_dir(inode)) |
| goto end_rmdir; |
| retval = udf_delete_entry(dir, fi, &fibh, &cfi); |
| if (retval) |
| goto end_rmdir; |
| if (inode->i_nlink != 2) |
| udf_warning(inode->i_sb, "udf_rmdir", |
| "empty directory has nlink != 2 (%d)", |
| inode->i_nlink); |
| inode->i_nlink = 0; |
| inode->i_size = 0; |
| mark_inode_dirty(inode); |
| dir->i_nlink --; |
| inode->i_ctime = dir->i_ctime = dir->i_mtime = current_fs_time(dir->i_sb); |
| mark_inode_dirty(dir); |
| |
| end_rmdir: |
| if (fibh.sbh != fibh.ebh) |
| udf_release_data(fibh.ebh); |
| udf_release_data(fibh.sbh); |
| out: |
| unlock_kernel(); |
| return retval; |
| } |
| |
| static int udf_unlink(struct inode * dir, struct dentry * dentry) |
| { |
| int retval; |
| struct inode * inode = dentry->d_inode; |
| struct udf_fileident_bh fibh; |
| struct fileIdentDesc *fi; |
| struct fileIdentDesc cfi; |
| kernel_lb_addr tloc; |
| |
| retval = -ENOENT; |
| lock_kernel(); |
| fi = udf_find_entry(dir, dentry, &fibh, &cfi); |
| if (!fi) |
| goto out; |
| |
| retval = -EIO; |
| tloc = lelb_to_cpu(cfi.icb.extLocation); |
| if (udf_get_lb_pblock(dir->i_sb, tloc, 0) != inode->i_ino) |
| goto end_unlink; |
| |
| if (!inode->i_nlink) |
| { |
| udf_debug("Deleting nonexistent file (%lu), %d\n", |
| inode->i_ino, inode->i_nlink); |
| inode->i_nlink = 1; |
| } |
| retval = udf_delete_entry(dir, fi, &fibh, &cfi); |
| if (retval) |
| goto end_unlink; |
| dir->i_ctime = dir->i_mtime = current_fs_time(dir->i_sb); |
| mark_inode_dirty(dir); |
| inode->i_nlink--; |
| mark_inode_dirty(inode); |
| inode->i_ctime = dir->i_ctime; |
| retval = 0; |
| |
| end_unlink: |
| if (fibh.sbh != fibh.ebh) |
| udf_release_data(fibh.ebh); |
| udf_release_data(fibh.sbh); |
| out: |
| unlock_kernel(); |
| return retval; |
| } |
| |
| static int udf_symlink(struct inode * dir, struct dentry * dentry, const char * symname) |
| { |
| struct inode * inode; |
| struct pathComponent *pc; |
| char *compstart; |
| struct udf_fileident_bh fibh; |
| struct buffer_head *bh = NULL; |
| int eoffset, elen = 0; |
| struct fileIdentDesc *fi; |
| struct fileIdentDesc cfi; |
| char *ea; |
| int err; |
| int block; |
| char name[UDF_NAME_LEN]; |
| int namelen; |
| |
| lock_kernel(); |
| if (!(inode = udf_new_inode(dir, S_IFLNK, &err))) |
| goto out; |
| |
| inode->i_mode = S_IFLNK | S_IRWXUGO; |
| inode->i_data.a_ops = &udf_symlink_aops; |
| inode->i_op = &page_symlink_inode_operations; |
| |
| if (UDF_I_ALLOCTYPE(inode) != ICBTAG_FLAG_AD_IN_ICB) |
| { |
| struct buffer_head *bh = NULL; |
| kernel_lb_addr bloc, eloc; |
| uint32_t elen, extoffset; |
| |
| block = udf_new_block(inode->i_sb, inode, |
| UDF_I_LOCATION(inode).partitionReferenceNum, |
| UDF_I_LOCATION(inode).logicalBlockNum, &err); |
| if (!block) |
| goto out_no_entry; |
| bloc = UDF_I_LOCATION(inode); |
| eloc.logicalBlockNum = block; |
| eloc.partitionReferenceNum = UDF_I_LOCATION(inode).partitionReferenceNum; |
| elen = inode->i_sb->s_blocksize; |
| UDF_I_LENEXTENTS(inode) = elen; |
| extoffset = udf_file_entry_alloc_offset(inode); |
| udf_add_aext(inode, &bloc, &extoffset, eloc, elen, &bh, 0); |
| udf_release_data(bh); |
| |
| block = udf_get_pblock(inode->i_sb, block, |
| UDF_I_LOCATION(inode).partitionReferenceNum, 0); |
| bh = udf_tread(inode->i_sb, block); |
| lock_buffer(bh); |
| memset(bh->b_data, 0x00, inode->i_sb->s_blocksize); |
| set_buffer_uptodate(bh); |
| unlock_buffer(bh); |
| mark_buffer_dirty_inode(bh, inode); |
| ea = bh->b_data + udf_ext0_offset(inode); |
| } |
| else |
| ea = UDF_I_DATA(inode) + UDF_I_LENEATTR(inode); |
| |
| eoffset = inode->i_sb->s_blocksize - udf_ext0_offset(inode); |
| pc = (struct pathComponent *)ea; |
| |
| if (*symname == '/') |
| { |
| do |
| { |
| symname++; |
| } while (*symname == '/'); |
| |
| pc->componentType = 1; |
| pc->lengthComponentIdent = 0; |
| pc->componentFileVersionNum = 0; |
| pc += sizeof(struct pathComponent); |
| elen += sizeof(struct pathComponent); |
| } |
| |
| err = -ENAMETOOLONG; |
| |
| while (*symname) |
| { |
| if (elen + sizeof(struct pathComponent) > eoffset) |
| goto out_no_entry; |
| |
| pc = (struct pathComponent *)(ea + elen); |
| |
| compstart = (char *)symname; |
| |
| do |
| { |
| symname++; |
| } while (*symname && *symname != '/'); |
| |
| pc->componentType = 5; |
| pc->lengthComponentIdent = 0; |
| pc->componentFileVersionNum = 0; |
| if (compstart[0] == '.') |
| { |
| if ((symname-compstart) == 1) |
| pc->componentType = 4; |
| else if ((symname-compstart) == 2 && compstart[1] == '.') |
| pc->componentType = 3; |
| } |
| |
| if (pc->componentType == 5) |
| { |
| if ( !(namelen = udf_put_filename(inode->i_sb, compstart, name, symname-compstart))) |
| goto out_no_entry; |
| |
| if (elen + sizeof(struct pathComponent) + namelen > eoffset) |
| goto out_no_entry; |
| else |
| pc->lengthComponentIdent = namelen; |
| |
| memcpy(pc->componentIdent, name, namelen); |
| } |
| |
| elen += sizeof(struct pathComponent) + pc->lengthComponentIdent; |
| |
| if (*symname) |
| { |
| do |
| { |
| symname++; |
| } while (*symname == '/'); |
| } |
| } |
| |
| udf_release_data(bh); |
| inode->i_size = elen; |
| if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_IN_ICB) |
| UDF_I_LENALLOC(inode) = inode->i_size; |
| mark_inode_dirty(inode); |
| |
| if (!(fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err))) |
| goto out_no_entry; |
| cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize); |
| cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(inode)); |
| if (UDF_SB_LVIDBH(inode->i_sb)) |
| { |
| struct logicalVolHeaderDesc *lvhd; |
| uint64_t uniqueID; |
| lvhd = (struct logicalVolHeaderDesc *)(UDF_SB_LVID(inode->i_sb)->logicalVolContentsUse); |
| uniqueID = le64_to_cpu(lvhd->uniqueID); |
| *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse = |
| cpu_to_le32(uniqueID & 0x00000000FFFFFFFFUL); |
| if (!(++uniqueID & 0x00000000FFFFFFFFUL)) |
| uniqueID += 16; |
| lvhd->uniqueID = cpu_to_le64(uniqueID); |
| mark_buffer_dirty(UDF_SB_LVIDBH(inode->i_sb)); |
| } |
| udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL); |
| if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) |
| { |
| mark_inode_dirty(dir); |
| } |
| if (fibh.sbh != fibh.ebh) |
| udf_release_data(fibh.ebh); |
| udf_release_data(fibh.sbh); |
| d_instantiate(dentry, inode); |
| err = 0; |
| |
| out: |
| unlock_kernel(); |
| return err; |
| |
| out_no_entry: |
| inode->i_nlink--; |
| mark_inode_dirty(inode); |
| iput(inode); |
| goto out; |
| } |
| |
| static int udf_link(struct dentry * old_dentry, struct inode * dir, |
| struct dentry *dentry) |
| { |
| struct inode *inode = old_dentry->d_inode; |
| struct udf_fileident_bh fibh; |
| struct fileIdentDesc cfi, *fi; |
| int err; |
| |
| lock_kernel(); |
| if (inode->i_nlink >= (256<<sizeof(inode->i_nlink))-1) |
| { |
| unlock_kernel(); |
| return -EMLINK; |
| } |
| |
| if (!(fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err))) |
| { |
| unlock_kernel(); |
| return err; |
| } |
| cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize); |
| cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(inode)); |
| if (UDF_SB_LVIDBH(inode->i_sb)) |
| { |
| struct logicalVolHeaderDesc *lvhd; |
| uint64_t uniqueID; |
| lvhd = (struct logicalVolHeaderDesc *)(UDF_SB_LVID(inode->i_sb)->logicalVolContentsUse); |
| uniqueID = le64_to_cpu(lvhd->uniqueID); |
| *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse = |
| cpu_to_le32(uniqueID & 0x00000000FFFFFFFFUL); |
| if (!(++uniqueID & 0x00000000FFFFFFFFUL)) |
| uniqueID += 16; |
| lvhd->uniqueID = cpu_to_le64(uniqueID); |
| mark_buffer_dirty(UDF_SB_LVIDBH(inode->i_sb)); |
| } |
| udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL); |
| if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB) |
| { |
| mark_inode_dirty(dir); |
| } |
| if (fibh.sbh != fibh.ebh) |
| udf_release_data(fibh.ebh); |
| udf_release_data(fibh.sbh); |
| inode->i_nlink ++; |
| inode->i_ctime = current_fs_time(inode->i_sb); |
| mark_inode_dirty(inode); |
| atomic_inc(&inode->i_count); |
| d_instantiate(dentry, inode); |
| unlock_kernel(); |
| return 0; |
| } |
| |
| /* Anybody can rename anything with this: the permission checks are left to the |
| * higher-level routines. |
| */ |
| static int udf_rename (struct inode * old_dir, struct dentry * old_dentry, |
| struct inode * new_dir, struct dentry * new_dentry) |
| { |
| struct inode * old_inode = old_dentry->d_inode; |
| struct inode * new_inode = new_dentry->d_inode; |
| struct udf_fileident_bh ofibh, nfibh; |
| struct fileIdentDesc *ofi = NULL, *nfi = NULL, *dir_fi = NULL, ocfi, ncfi; |
| struct buffer_head *dir_bh = NULL; |
| int retval = -ENOENT; |
| kernel_lb_addr tloc; |
| |
| lock_kernel(); |
| if ((ofi = udf_find_entry(old_dir, old_dentry, &ofibh, &ocfi))) |
| { |
| if (ofibh.sbh != ofibh.ebh) |
| udf_release_data(ofibh.ebh); |
| udf_release_data(ofibh.sbh); |
| } |
| tloc = lelb_to_cpu(ocfi.icb.extLocation); |
| if (!ofi || udf_get_lb_pblock(old_dir->i_sb, tloc, 0) |
| != old_inode->i_ino) |
| goto end_rename; |
| |
| nfi = udf_find_entry(new_dir, new_dentry, &nfibh, &ncfi); |
| if (nfi) |
| { |
| if (!new_inode) |
| { |
| if (nfibh.sbh != nfibh.ebh) |
| udf_release_data(nfibh.ebh); |
| udf_release_data(nfibh.sbh); |
| nfi = NULL; |
| } |
| } |
| if (S_ISDIR(old_inode->i_mode)) |
| { |
| uint32_t offset = udf_ext0_offset(old_inode); |
| |
| if (new_inode) |
| { |
| retval = -ENOTEMPTY; |
| if (!empty_dir(new_inode)) |
| goto end_rename; |
| } |
| retval = -EIO; |
| if (UDF_I_ALLOCTYPE(old_inode) == ICBTAG_FLAG_AD_IN_ICB) |
| { |
| dir_fi = udf_get_fileident(UDF_I_DATA(old_inode) - |
| (UDF_I_EFE(old_inode) ? |
| sizeof(struct extendedFileEntry) : |
| sizeof(struct fileEntry)), |
| old_inode->i_sb->s_blocksize, &offset); |
| } |
| else |
| { |
| dir_bh = udf_bread(old_inode, 0, 0, &retval); |
| if (!dir_bh) |
| goto end_rename; |
| dir_fi = udf_get_fileident(dir_bh->b_data, old_inode->i_sb->s_blocksize, &offset); |
| } |
| if (!dir_fi) |
| goto end_rename; |
| tloc = lelb_to_cpu(dir_fi->icb.extLocation); |
| if (udf_get_lb_pblock(old_inode->i_sb, tloc, 0) |
| != old_dir->i_ino) |
| goto end_rename; |
| |
| retval = -EMLINK; |
| if (!new_inode && new_dir->i_nlink >= (256<<sizeof(new_dir->i_nlink))-1) |
| goto end_rename; |
| } |
| if (!nfi) |
| { |
| nfi = udf_add_entry(new_dir, new_dentry, &nfibh, &ncfi, &retval); |
| if (!nfi) |
| goto end_rename; |
| } |
| |
| /* |
| * Like most other Unix systems, set the ctime for inodes on a |
| * rename. |
| */ |
| old_inode->i_ctime = current_fs_time(old_inode->i_sb); |
| mark_inode_dirty(old_inode); |
| |
| /* |
| * ok, that's it |
| */ |
| ncfi.fileVersionNum = ocfi.fileVersionNum; |
| ncfi.fileCharacteristics = ocfi.fileCharacteristics; |
| memcpy(&(ncfi.icb), &(ocfi.icb), sizeof(long_ad)); |
| udf_write_fi(new_dir, &ncfi, nfi, &nfibh, NULL, NULL); |
| |
| /* The old fid may have moved - find it again */ |
| ofi = udf_find_entry(old_dir, old_dentry, &ofibh, &ocfi); |
| udf_delete_entry(old_dir, ofi, &ofibh, &ocfi); |
| |
| if (new_inode) |
| { |
| new_inode->i_nlink--; |
| new_inode->i_ctime = current_fs_time(new_inode->i_sb); |
| mark_inode_dirty(new_inode); |
| } |
| old_dir->i_ctime = old_dir->i_mtime = current_fs_time(old_dir->i_sb); |
| mark_inode_dirty(old_dir); |
| |
| if (dir_fi) |
| { |
| dir_fi->icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(new_dir)); |
| udf_update_tag((char *)dir_fi, (sizeof(struct fileIdentDesc) + |
| le16_to_cpu(dir_fi->lengthOfImpUse) + 3) & ~3); |
| if (UDF_I_ALLOCTYPE(old_inode) == ICBTAG_FLAG_AD_IN_ICB) |
| { |
| mark_inode_dirty(old_inode); |
| } |
| else |
| mark_buffer_dirty_inode(dir_bh, old_inode); |
| old_dir->i_nlink --; |
| mark_inode_dirty(old_dir); |
| if (new_inode) |
| { |
| new_inode->i_nlink --; |
| mark_inode_dirty(new_inode); |
| } |
| else |
| { |
| new_dir->i_nlink ++; |
| mark_inode_dirty(new_dir); |
| } |
| } |
| |
| if (ofi) |
| { |
| if (ofibh.sbh != ofibh.ebh) |
| udf_release_data(ofibh.ebh); |
| udf_release_data(ofibh.sbh); |
| } |
| |
| retval = 0; |
| |
| end_rename: |
| udf_release_data(dir_bh); |
| if (nfi) |
| { |
| if (nfibh.sbh != nfibh.ebh) |
| udf_release_data(nfibh.ebh); |
| udf_release_data(nfibh.sbh); |
| } |
| unlock_kernel(); |
| return retval; |
| } |
| |
| struct inode_operations udf_dir_inode_operations = { |
| .lookup = udf_lookup, |
| .create = udf_create, |
| .link = udf_link, |
| .unlink = udf_unlink, |
| .symlink = udf_symlink, |
| .mkdir = udf_mkdir, |
| .rmdir = udf_rmdir, |
| .mknod = udf_mknod, |
| .rename = udf_rename, |
| }; |