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linux
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ialloc.c
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/* * ialloc.c * * PURPOSE * Inode allocation handling routines for the OSTA-UDF(tm) filesystem. * * 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) 1998-2001 Ben Fennema * * HISTORY * * 02/24/99 blf Created. * */ #include "udfdecl.h" #include <linux/fs.h> #include <linux/sched.h> #include <linux/slab.h> #include "udf_i.h" #include "udf_sb.h" void udf_free_inode(struct inode *inode) { struct super_block *sb = inode->i_sb; struct udf_sb_info *sbi = UDF_SB(sb); struct logicalVolIntegrityDescImpUse *lvidiu = udf_sb_lvidiu(sb); if (lvidiu) { mutex_lock(&sbi->s_alloc_mutex); if (S_ISDIR(inode->i_mode)) le32_add_cpu(&lvidiu->numDirs, -1); else le32_add_cpu(&lvidiu->numFiles, -1); udf_updated_lvid(sb); mutex_unlock(&sbi->s_alloc_mutex); } udf_free_blocks(sb, NULL, &UDF_I(inode)->i_location, 0, 1); } struct inode *udf_new_inode(struct inode *dir, umode_t mode) { struct super_block *sb = dir->i_sb; struct udf_sb_info *sbi = UDF_SB(sb); struct inode *inode; udf_pblk_t block; uint32_t start = UDF_I(dir)->i_location.logicalBlockNum; struct udf_inode_info *iinfo; struct udf_inode_info *dinfo = UDF_I(dir); struct logicalVolIntegrityDescImpUse *lvidiu; int err; inode = new_inode(sb); if (!inode) return ERR_PTR(-ENOMEM); iinfo = UDF_I(inode); if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) { iinfo->i_efe = 1; if (UDF_VERS_USE_EXTENDED_FE > sbi->s_udfrev) sbi->s_udfrev = UDF_VERS_USE_EXTENDED_FE; iinfo->i_data = kzalloc(inode->i_sb->s_blocksize - sizeof(struct extendedFileEntry), GFP_KERNEL); } else { iinfo->i_efe = 0; iinfo->i_data = kzalloc(inode->i_sb->s_blocksize - sizeof(struct fileEntry), GFP_KERNEL); } if (!iinfo->i_data) { iput(inode); return ERR_PTR(-ENOMEM); } err = -ENOSPC; block = udf_new_block(dir->i_sb, NULL, dinfo->i_location.partitionReferenceNum, start, &err); if (err) { iput(inode); return ERR_PTR(err); } lvidiu = udf_sb_lvidiu(sb); if (lvidiu) { iinfo->i_unique = lvid_get_unique_id(sb); inode->i_generation = iinfo->i_unique; mutex_lock(&sbi->s_alloc_mutex); if (S_ISDIR(mode)) le32_add_cpu(&lvidiu->numDirs, 1); else le32_add_cpu(&lvidiu->numFiles, 1); udf_updated_lvid(sb); mutex_unlock(&sbi->s_alloc_mutex); } inode_init_owner(inode, dir, mode); if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_SET)) inode->i_uid = sbi->s_uid; if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_SET)) inode->i_gid = sbi->s_gid; iinfo->i_location.logicalBlockNum = block; iinfo->i_location.partitionReferenceNum = dinfo->i_location.partitionReferenceNum; inode->i_ino = udf_get_lb_pblock(sb, &iinfo->i_location, 0); inode->i_blocks = 0; iinfo->i_lenEAttr = 0; iinfo->i_lenAlloc = 0; iinfo->i_use = 0; iinfo->i_checkpoint = 1; iinfo->i_extraPerms = FE_PERM_U_CHATTR; udf_update_extra_perms(inode, mode); if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB)) iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB; else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD)) iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT; else iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG; inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); iinfo->i_crtime = inode->i_mtime; if (unlikely(insert_inode_locked(inode) < 0)) { make_bad_inode(inode); iput(inode); return ERR_PTR(-EIO); } mark_inode_dirty(inode); return inode; }
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