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Diffstat (limited to 'fs/ntfs3/inode.c')
-rw-r--r--fs/ntfs3/inode.c275
1 files changed, 95 insertions, 180 deletions
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index b86ec7dd731c..8f72066b3229 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -399,6 +399,12 @@ end_enum:
goto out;
}
+ if (names != le16_to_cpu(rec->hard_links)) {
+ /* Correct minor error on the fly. Do not mark inode as dirty. */
+ rec->hard_links = cpu_to_le16(names);
+ ni->mi.dirty = true;
+ }
+
set_nlink(inode, names);
if (S_ISDIR(mode)) {
@@ -1279,6 +1285,7 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
}
inode = &ni->vfs_inode;
inode_init_owner(mnt_userns, inode, dir, mode);
+ mode = inode->i_mode;
inode->i_atime = inode->i_mtime = inode->i_ctime = ni->i_crtime =
current_time(inode);
@@ -1371,6 +1378,7 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
attr = Add2Ptr(attr, asize);
}
+ attr->id = cpu_to_le16(aid++);
if (fa & FILE_ATTRIBUTE_DIRECTORY) {
/*
* Regular directory or symlink to directory.
@@ -1381,7 +1389,6 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
attr->type = ATTR_ROOT;
attr->size = cpu_to_le32(asize);
- attr->id = cpu_to_le16(aid++);
attr->name_len = ARRAY_SIZE(I30_NAME);
attr->name_off = SIZEOF_RESIDENT_LE;
@@ -1412,52 +1419,46 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
/* Insert empty ATTR_DATA */
attr->type = ATTR_DATA;
attr->size = cpu_to_le32(SIZEOF_RESIDENT);
- attr->id = cpu_to_le16(aid++);
attr->name_off = SIZEOF_RESIDENT_LE;
attr->res.data_off = SIZEOF_RESIDENT_LE;
- } else {
+ } else if (S_ISREG(mode)) {
/*
- * Regular file or node.
+ * Regular file. Create empty non resident data attribute.
*/
attr->type = ATTR_DATA;
- attr->id = cpu_to_le16(aid++);
-
- if (S_ISREG(mode)) {
- /* Create empty non resident data attribute. */
- attr->non_res = 1;
- attr->nres.evcn = cpu_to_le64(-1ll);
- if (fa & FILE_ATTRIBUTE_SPARSE_FILE) {
- attr->size =
- cpu_to_le32(SIZEOF_NONRESIDENT_EX + 8);
- attr->name_off = SIZEOF_NONRESIDENT_EX_LE;
- attr->flags = ATTR_FLAG_SPARSED;
- asize = SIZEOF_NONRESIDENT_EX + 8;
- } else if (fa & FILE_ATTRIBUTE_COMPRESSED) {
- attr->size =
- cpu_to_le32(SIZEOF_NONRESIDENT_EX + 8);
- attr->name_off = SIZEOF_NONRESIDENT_EX_LE;
- attr->flags = ATTR_FLAG_COMPRESSED;
- attr->nres.c_unit = COMPRESSION_UNIT;
- asize = SIZEOF_NONRESIDENT_EX + 8;
- } else {
- attr->size =
- cpu_to_le32(SIZEOF_NONRESIDENT + 8);
- attr->name_off = SIZEOF_NONRESIDENT_LE;
- asize = SIZEOF_NONRESIDENT + 8;
- }
- attr->nres.run_off = attr->name_off;
+ attr->non_res = 1;
+ attr->nres.evcn = cpu_to_le64(-1ll);
+ if (fa & FILE_ATTRIBUTE_SPARSE_FILE) {
+ attr->size = cpu_to_le32(SIZEOF_NONRESIDENT_EX + 8);
+ attr->name_off = SIZEOF_NONRESIDENT_EX_LE;
+ attr->flags = ATTR_FLAG_SPARSED;
+ asize = SIZEOF_NONRESIDENT_EX + 8;
+ } else if (fa & FILE_ATTRIBUTE_COMPRESSED) {
+ attr->size = cpu_to_le32(SIZEOF_NONRESIDENT_EX + 8);
+ attr->name_off = SIZEOF_NONRESIDENT_EX_LE;
+ attr->flags = ATTR_FLAG_COMPRESSED;
+ attr->nres.c_unit = COMPRESSION_UNIT;
+ asize = SIZEOF_NONRESIDENT_EX + 8;
} else {
- /* Create empty resident data attribute. */
- attr->size = cpu_to_le32(SIZEOF_RESIDENT);
- attr->name_off = SIZEOF_RESIDENT_LE;
- if (fa & FILE_ATTRIBUTE_SPARSE_FILE)
- attr->flags = ATTR_FLAG_SPARSED;
- else if (fa & FILE_ATTRIBUTE_COMPRESSED)
- attr->flags = ATTR_FLAG_COMPRESSED;
- attr->res.data_off = SIZEOF_RESIDENT_LE;
- asize = SIZEOF_RESIDENT;
- ni->ni_flags |= NI_FLAG_RESIDENT;
+ attr->size = cpu_to_le32(SIZEOF_NONRESIDENT + 8);
+ attr->name_off = SIZEOF_NONRESIDENT_LE;
+ asize = SIZEOF_NONRESIDENT + 8;
}
+ attr->nres.run_off = attr->name_off;
+ } else {
+ /*
+ * Node. Create empty resident data attribute.
+ */
+ attr->type = ATTR_DATA;
+ attr->size = cpu_to_le32(SIZEOF_RESIDENT);
+ attr->name_off = SIZEOF_RESIDENT_LE;
+ if (fa & FILE_ATTRIBUTE_SPARSE_FILE)
+ attr->flags = ATTR_FLAG_SPARSED;
+ else if (fa & FILE_ATTRIBUTE_COMPRESSED)
+ attr->flags = ATTR_FLAG_COMPRESSED;
+ attr->res.data_off = SIZEOF_RESIDENT_LE;
+ asize = SIZEOF_RESIDENT;
+ ni->ni_flags |= NI_FLAG_RESIDENT;
}
if (S_ISDIR(mode)) {
@@ -1485,7 +1486,8 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
asize = ALIGN(SIZEOF_RESIDENT + nsize, 8);
t16 = PtrOffset(rec, attr);
- if (asize + t16 + 8 > sbi->record_size) {
+ /* 0x78 - the size of EA + EAINFO to store WSL */
+ if (asize + t16 + 0x78 + 8 > sbi->record_size) {
CLST alen;
CLST clst = bytes_to_cluster(sbi, nsize);
@@ -1545,20 +1547,15 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
rec->next_attr_id = cpu_to_le16(aid);
/* Step 2: Add new name in index. */
- err = indx_insert_entry(&dir_ni->dir, dir_ni, new_de, sbi, fnd);
+ err = indx_insert_entry(&dir_ni->dir, dir_ni, new_de, sbi, fnd, 0);
if (err)
goto out6;
- /* Update current directory record. */
- mark_inode_dirty(dir);
-
inode->i_generation = le16_to_cpu(rec->seq);
dir->i_mtime = dir->i_ctime = inode->i_atime;
if (S_ISDIR(mode)) {
- if (dir->i_mode & S_ISGID)
- mode |= S_ISGID;
inode->i_op = &ntfs_dir_inode_operations;
inode->i_fop = &ntfs_dir_operations;
} else if (S_ISLNK(mode)) {
@@ -1601,8 +1598,8 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
d_instantiate(dentry, inode);
ntfs_save_wsl_perm(inode);
- mark_inode_dirty(inode);
mark_inode_dirty(dir);
+ mark_inode_dirty(inode);
/* Normal exit. */
goto out2;
@@ -1646,61 +1643,36 @@ out1:
int ntfs_link_inode(struct inode *inode, struct dentry *dentry)
{
int err;
- struct inode *dir = d_inode(dentry->d_parent);
- struct ntfs_inode *dir_ni = ntfs_i(dir);
struct ntfs_inode *ni = ntfs_i(inode);
- struct super_block *sb = inode->i_sb;
- struct ntfs_sb_info *sbi = sb->s_fs_info;
- const struct qstr *name = &dentry->d_name;
- struct NTFS_DE *new_de = NULL;
- struct ATTR_FILE_NAME *fname;
- struct ATTRIB *attr;
- u16 key_size;
- struct INDEX_ROOT *dir_root;
-
- dir_root = indx_get_root(&dir_ni->dir, dir_ni, NULL, NULL);
- if (!dir_root)
- return -EINVAL;
+ struct ntfs_sb_info *sbi = inode->i_sb->s_fs_info;
+ struct NTFS_DE *de;
+ struct ATTR_FILE_NAME *de_name;
/* Allocate PATH_MAX bytes. */
- new_de = __getname();
- if (!new_de)
+ de = __getname();
+ if (!de)
return -ENOMEM;
- /* Mark rw ntfs as dirty. It will be cleared at umount. */
- ntfs_set_state(ni->mi.sbi, NTFS_DIRTY_DIRTY);
-
- /* Insert file name. */
- err = fill_name_de(sbi, new_de, name, NULL);
- if (err)
- goto out;
-
- key_size = le16_to_cpu(new_de->key_size);
- err = ni_insert_resident(ni, key_size, ATTR_NAME, NULL, 0, &attr, NULL);
- if (err)
- goto out;
-
- mi_get_ref(&ni->mi, &new_de->ref);
-
- fname = (struct ATTR_FILE_NAME *)(new_de + 1);
- mi_get_ref(&dir_ni->mi, &fname->home);
- fname->dup.cr_time = fname->dup.m_time = fname->dup.c_time =
- fname->dup.a_time = kernel2nt(&inode->i_ctime);
- fname->dup.alloc_size = fname->dup.data_size = 0;
- fname->dup.fa = ni->std_fa;
- fname->dup.ea_size = fname->dup.reparse = 0;
-
- memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), fname, key_size);
+ /* Mark rw ntfs as dirty. It will be cleared at umount. */
+ ntfs_set_state(sbi, NTFS_DIRTY_DIRTY);
- err = indx_insert_entry(&dir_ni->dir, dir_ni, new_de, sbi, NULL);
+ /* Construct 'de'. */
+ err = fill_name_de(sbi, de, &dentry->d_name, NULL);
if (err)
goto out;
- le16_add_cpu(&ni->mi.mrec->hard_links, 1);
- ni->mi.dirty = true;
+ de_name = (struct ATTR_FILE_NAME *)(de + 1);
+ /* Fill duplicate info. */
+ de_name->dup.cr_time = de_name->dup.m_time = de_name->dup.c_time =
+ de_name->dup.a_time = kernel2nt(&inode->i_ctime);
+ de_name->dup.alloc_size = de_name->dup.data_size =
+ cpu_to_le64(inode->i_size);
+ de_name->dup.fa = ni->std_fa;
+ de_name->dup.ea_size = de_name->dup.reparse = 0;
+ err = ni_add_name(ntfs_i(d_inode(dentry->d_parent)), ni, de);
out:
- __putname(new_de);
+ __putname(de);
return err;
}
@@ -1713,113 +1685,56 @@ out:
int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry)
{
int err;
- struct super_block *sb = dir->i_sb;
- struct ntfs_sb_info *sbi = sb->s_fs_info;
+ struct ntfs_sb_info *sbi = dir->i_sb->s_fs_info;
struct inode *inode = d_inode(dentry);
struct ntfs_inode *ni = ntfs_i(inode);
- const struct qstr *name = &dentry->d_name;
struct ntfs_inode *dir_ni = ntfs_i(dir);
- struct ntfs_index *indx = &dir_ni->dir;
- struct cpu_str *uni = NULL;
- struct ATTR_FILE_NAME *fname;
- u8 name_type;
- struct ATTR_LIST_ENTRY *le;
- struct MFT_REF ref;
- bool is_dir = S_ISDIR(inode->i_mode);
- struct INDEX_ROOT *dir_root;
+ struct NTFS_DE *de, *de2 = NULL;
+ int undo_remove;
- dir_root = indx_get_root(indx, dir_ni, NULL, NULL);
- if (!dir_root)
+ if (ntfs_is_meta_file(sbi, ni->mi.rno))
return -EINVAL;
+ /* Allocate PATH_MAX bytes. */
+ de = __getname();
+ if (!de)
+ return -ENOMEM;
+
ni_lock(ni);
- if (is_dir && !dir_is_empty(inode)) {
+ if (S_ISDIR(inode->i_mode) && !dir_is_empty(inode)) {
err = -ENOTEMPTY;
- goto out1;
- }
-
- if (ntfs_is_meta_file(sbi, inode->i_ino)) {
- err = -EINVAL;
- goto out1;
- }
-
- /* Allocate PATH_MAX bytes. */
- uni = __getname();
- if (!uni) {
- err = -ENOMEM;
- goto out1;
+ goto out;
}
- /* Convert input string to unicode. */
- err = ntfs_nls_to_utf16(sbi, name->name, name->len, uni, NTFS_NAME_LEN,
- UTF16_HOST_ENDIAN);
+ err = fill_name_de(sbi, de, &dentry->d_name, NULL);
if (err < 0)
- goto out2;
-
- /* Mark rw ntfs as dirty. It will be cleared at umount. */
- ntfs_set_state(sbi, NTFS_DIRTY_DIRTY);
-
- /* Find name in record. */
- mi_get_ref(&dir_ni->mi, &ref);
-
- le = NULL;
- fname = ni_fname_name(ni, uni, &ref, &le);
- if (!fname) {
- err = -ENOENT;
- goto out3;
- }
-
- name_type = paired_name(fname->type);
-
- err = indx_delete_entry(indx, dir_ni, fname, fname_full_size(fname),
- sbi);
- if (err)
- goto out3;
-
- /* Then remove name from MFT. */
- ni_remove_attr_le(ni, attr_from_name(fname), le);
-
- le16_add_cpu(&ni->mi.mrec->hard_links, -1);
- ni->mi.dirty = true;
-
- if (name_type != FILE_NAME_POSIX) {
- /* Now we should delete name by type. */
- fname = ni_fname_type(ni, name_type, &le);
- if (fname) {
- err = indx_delete_entry(indx, dir_ni, fname,
- fname_full_size(fname), sbi);
- if (err)
- goto out3;
+ goto out;
- ni_remove_attr_le(ni, attr_from_name(fname), le);
+ undo_remove = 0;
+ err = ni_remove_name(dir_ni, ni, de, &de2, &undo_remove);
- le16_add_cpu(&ni->mi.mrec->hard_links, -1);
- }
- }
-out3:
- switch (err) {
- case 0:
+ if (!err) {
drop_nlink(inode);
- break;
- case -ENOTEMPTY:
- case -ENOSPC:
- case -EROFS:
- break;
- default:
+ dir->i_mtime = dir->i_ctime = current_time(dir);
+ mark_inode_dirty(dir);
+ inode->i_ctime = dir->i_ctime;
+ if (inode->i_nlink)
+ mark_inode_dirty(inode);
+ } else if (!ni_remove_name_undo(dir_ni, ni, de, de2, undo_remove)) {
make_bad_inode(inode);
+ ntfs_inode_err(inode, "failed to undo unlink");
+ ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
+ } else {
+ if (ni_is_dirty(dir))
+ mark_inode_dirty(dir);
+ if (ni_is_dirty(inode))
+ mark_inode_dirty(inode);
}
- dir->i_mtime = dir->i_ctime = current_time(dir);
- mark_inode_dirty(dir);
- inode->i_ctime = dir->i_ctime;
- if (inode->i_nlink)
- mark_inode_dirty(inode);
-
-out2:
- __putname(uni);
-out1:
+out:
ni_unlock(ni);
+ __putname(de);
return err;
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-06 03:11:36 +0000