From d2be51cb34dc501791f3b8c01a99a3f2064bd8d1 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 4 Sep 2014 09:34:14 -0400 Subject: [PATCH] udf: merge the pieces inserting a new non-directory object into directory boilerplate code in udf_{create,mknod,symlink} taken to new helper symlink case converted to unique id calculated by udf_new_inode() - no point finding a new one. Signed-off-by: Al Viro Signed-off-by: Jan Kara --- fs/udf/namei.c | 98 +++++++++++++++----------------------------------- 1 file changed, 29 insertions(+), 69 deletions(-) diff --git a/fs/udf/namei.c b/fs/udf/namei.c index e041fd9c6816..abec86466735 100644 --- a/fs/udf/namei.c +++ b/fs/udf/namei.c @@ -548,31 +548,16 @@ static int udf_delete_entry(struct inode *inode, struct fileIdentDesc *fi, return udf_write_fi(inode, cfi, fi, fibh, NULL, NULL); } -static int udf_create(struct inode *dir, struct dentry *dentry, umode_t mode, - bool excl) +static int udf_add_nondir(struct dentry *dentry, struct inode *inode) { + struct udf_inode_info *iinfo = UDF_I(inode); + struct inode *dir = dentry->d_parent->d_inode; struct udf_fileident_bh fibh; - struct inode *inode; struct fileIdentDesc cfi, *fi; int err; - struct udf_inode_info *iinfo; - - inode = udf_new_inode(dir, mode, &err); - if (!inode) { - return err; - } - - iinfo = UDF_I(inode); - if (iinfo->i_alloc_type == 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; - mark_inode_dirty(inode); fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err); - if (!fi) { + if (unlikely(!fi)) { inode_dec_link_count(inode); iput(inode); return err; @@ -592,6 +577,28 @@ static int udf_create(struct inode *dir, struct dentry *dentry, umode_t mode, return 0; } +static int udf_create(struct inode *dir, struct dentry *dentry, umode_t mode, + bool excl) +{ + struct inode *inode; + int err; + + inode = udf_new_inode(dir, mode, &err); + if (!inode) { + return err; + } + + if (UDF_I(inode)->i_alloc_type == 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; + mark_inode_dirty(inode); + + return udf_add_nondir(dentry, inode); +} + static int udf_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) { struct inode *inode; @@ -619,10 +626,7 @@ static int udf_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev) { struct inode *inode; - struct udf_fileident_bh fibh; - struct fileIdentDesc cfi, *fi; int err; - struct udf_inode_info *iinfo; if (!old_valid_dev(rdev)) return -EINVAL; @@ -630,33 +634,10 @@ static int udf_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, err = -EIO; inode = udf_new_inode(dir, mode, &err); if (!inode) - goto out; - - iinfo = UDF_I(inode); - init_special_inode(inode, mode, rdev); - fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err); - if (!fi) { - inode_dec_link_count(inode); - iput(inode); return err; - } - cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize); - cfi.icb.extLocation = cpu_to_lelb(iinfo->i_location); - *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse = - cpu_to_le32(iinfo->i_unique & 0x00000000FFFFFFFFUL); - udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL); - if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) - mark_inode_dirty(dir); - mark_inode_dirty(inode); - - if (fibh.sbh != fibh.ebh) - brelse(fibh.ebh); - brelse(fibh.sbh); - d_instantiate(dentry, inode); - err = 0; -out: - return err; + init_special_inode(inode, mode, rdev); + return udf_add_nondir(dentry, inode); } static int udf_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) @@ -877,11 +858,8 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry, struct inode *inode; struct pathComponent *pc; const char *compstart; - struct udf_fileident_bh fibh; struct extent_position epos = {}; int eoffset, elen = 0; - struct fileIdentDesc *fi; - struct fileIdentDesc cfi; uint8_t *ea; int err; int block; @@ -1010,31 +988,13 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry, mark_inode_dirty(inode); up_write(&iinfo->i_data_sem); - fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err); - if (!fi) - goto out_fail; - cfi.icb.extLength = cpu_to_le32(sb->s_blocksize); - cfi.icb.extLocation = cpu_to_lelb(iinfo->i_location); - if (UDF_SB(inode->i_sb)->s_lvid_bh) { - *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse = - cpu_to_le32(lvid_get_unique_id(sb)); - } - udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL); - if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) - mark_inode_dirty(dir); - if (fibh.sbh != fibh.ebh) - brelse(fibh.ebh); - brelse(fibh.sbh); - d_instantiate(dentry, inode); - err = 0; - + err = udf_add_nondir(dentry, inode); out: kfree(name); return err; out_no_entry: up_write(&iinfo->i_data_sem); -out_fail: inode_dec_link_count(inode); iput(inode); goto out; -- 2.20.1