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fs/ntfs3: Rework file operations

Browse source 
Rename now works "Add new name and remove old name".
"Remove old name and add new name" may result in bad inode
if we can't add new name and then can't restore (add) old name.

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
This commit is contained in:
Konstantin Komarov 2021-08-31 18:52:39 +03:00
parent a97131c29c
commit 78ab59fee0
No known key found for this signature in database
GPG key ID: A9B0331F832407B6
10 changed files with 566 additions and 532 deletions
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17
fs/ntfs3/attrib.c
View file

@ -218,9 +218,11 @@ int attr_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run,
} }
out: out:
/* Undo. */ /* Undo 'ntfs_look_for_free_space' */
run_deallocate_ex(sbi, run, vcn0, vcn - vcn0, NULL, false); if (vcn - vcn0) {
run_truncate(run, vcn0); run_deallocate_ex(sbi, run, vcn0, vcn - vcn0, NULL, false);
run_truncate(run, vcn0);
}
return err; return err;
} }
@ -701,7 +703,7 @@ int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type,
* (list entry for std attribute always first). * (list entry for std attribute always first).
* So it is safe to step back. * So it is safe to step back.
*/ */
mi_remove_attr(mi, attr); mi_remove_attr(NULL, mi, attr);
if (!al_remove_le(ni, le)) { if (!al_remove_le(ni, le)) {
err = -EINVAL; err = -EINVAL;
@ -1004,7 +1006,7 @@ int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn,
end = next_svcn; end = next_svcn;
while (end > evcn) { while (end > evcn) {
/* Remove segment [svcn : evcn). */ /* Remove segment [svcn : evcn). */
mi_remove_attr(mi, attr); mi_remove_attr(NULL, mi, attr);
if (!al_remove_le(ni, le)) { if (!al_remove_le(ni, le)) {
err = -EINVAL; err = -EINVAL;
@ -1600,7 +1602,7 @@ int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size,
end = next_svcn; end = next_svcn;
while (end > evcn) { while (end > evcn) {
/* Remove segment [svcn : evcn). */ /* Remove segment [svcn : evcn). */
mi_remove_attr(mi, attr); mi_remove_attr(NULL, mi, attr);
if (!al_remove_le(ni, le)) { if (!al_remove_le(ni, le)) {
err = -EINVAL; err = -EINVAL;
@ -1836,13 +1838,12 @@ int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes)
u16 le_sz; u16 le_sz;
u16 roff = le16_to_cpu(attr->nres.run_off); u16 roff = le16_to_cpu(attr->nres.run_off);
/* run==1 means unpack and deallocate. */
run_unpack_ex(RUN_DEALLOCATE, sbi, ni->mi.rno, svcn, run_unpack_ex(RUN_DEALLOCATE, sbi, ni->mi.rno, svcn,
evcn1 - 1, svcn, Add2Ptr(attr, roff), evcn1 - 1, svcn, Add2Ptr(attr, roff),
le32_to_cpu(attr->size) - roff); le32_to_cpu(attr->size) - roff);
/* Delete this attribute segment. */ /* Delete this attribute segment. */
mi_remove_attr(mi, attr); mi_remove_attr(NULL, mi, attr);
if (!le) if (!le)
break; break;

26
fs/ntfs3/attrlist.c
View file

@ -279,7 +279,7 @@ int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name,
struct ATTR_LIST_ENTRY *le; struct ATTR_LIST_ENTRY *le;
size_t off; size_t off;
u16 sz; u16 sz;
size_t asize, new_asize; size_t asize, new_asize, old_size;
u64 new_size; u64 new_size;
typeof(ni->attr_list) *al = &ni->attr_list; typeof(ni->attr_list) *al = &ni->attr_list;
@ -287,8 +287,9 @@ int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name,
* Compute the size of the new 'le' * Compute the size of the new 'le'
*/ */
sz = le_size(name_len); sz = le_size(name_len);
new_size = al->size + sz; old_size = al->size;
asize = al_aligned(al->size); new_size = old_size + sz;
asize = al_aligned(old_size);
new_asize = al_aligned(new_size); new_asize = al_aligned(new_size);
/* Scan forward to the point at which the new 'le' should be inserted. */ /* Scan forward to the point at which the new 'le' should be inserted. */
@ -302,13 +303,14 @@ int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name,
return -ENOMEM; return -ENOMEM;
memcpy(ptr, al->le, off); memcpy(ptr, al->le, off);
memcpy(Add2Ptr(ptr, off + sz), le, al->size - off); memcpy(Add2Ptr(ptr, off + sz), le, old_size - off);
le = Add2Ptr(ptr, off); le = Add2Ptr(ptr, off);
kfree(al->le); kfree(al->le);
al->le = ptr; al->le = ptr;
} else { } else {
memmove(Add2Ptr(le, sz), le, al->size - off); memmove(Add2Ptr(le, sz), le, old_size - off);
} }
*new_le = le;
al->size = new_size; al->size = new_size;
@ -321,23 +323,25 @@ int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name,
le->id = id; le->id = id;
memcpy(le->name, name, sizeof(short) * name_len); memcpy(le->name, name, sizeof(short) * name_len);
al->dirty = true;
err = attr_set_size(ni, ATTR_LIST, NULL, 0, &al->run, new_size, err = attr_set_size(ni, ATTR_LIST, NULL, 0, &al->run, new_size,
&new_size, true, &attr); &new_size, true, &attr);
if (err) if (err) {
/* Undo memmove above. */
memmove(le, Add2Ptr(le, sz), old_size - off);
al->size = old_size;
return err; return err;
}
al->dirty = true;
if (attr && attr->non_res) { if (attr && attr->non_res) {
err = ntfs_sb_write_run(ni->mi.sbi, &al->run, 0, al->le, err = ntfs_sb_write_run(ni->mi.sbi, &al->run, 0, al->le,
al->size); al->size);
if (err) if (err)
return err; return err;
al->dirty = false;
} }
al->dirty = false;
*new_le = le;
return 0; return 0;
} }

342
fs/ntfs3/frecord.c
View file

@ -163,7 +163,7 @@ int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi)
/* /*
* ni_load_mi - Load mft_inode corresponded list_entry. * ni_load_mi - Load mft_inode corresponded list_entry.
*/ */
int ni_load_mi(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le, int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le,
struct mft_inode **mi) struct mft_inode **mi)
{ {
CLST rno; CLST rno;
@ -402,7 +402,7 @@ int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
if (!attr) if (!attr)
return -ENOENT; return -ENOENT;
mi_remove_attr(&ni->mi, attr); mi_remove_attr(ni, &ni->mi, attr);
return 0; return 0;
} }
@ -441,7 +441,7 @@ int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
if (!attr) if (!attr)
return -ENOENT; return -ENOENT;
mi_remove_attr(mi, attr); mi_remove_attr(ni, mi, attr);
if (PtrOffset(ni->attr_list.le, le) >= ni->attr_list.size) if (PtrOffset(ni->attr_list.le, le) >= ni->attr_list.size)
return 0; return 0;
@ -454,12 +454,11 @@ int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
* *
* Return: Not full constructed attribute or NULL if not possible to create. * Return: Not full constructed attribute or NULL if not possible to create.
*/ */
static struct ATTRIB *ni_ins_new_attr(struct ntfs_inode *ni, static struct ATTRIB *
struct mft_inode *mi, ni_ins_new_attr(struct ntfs_inode *ni, struct mft_inode *mi,
struct ATTR_LIST_ENTRY *le, struct ATTR_LIST_ENTRY *le, enum ATTR_TYPE type,
enum ATTR_TYPE type, const __le16 *name, const __le16 *name, u8 name_len, u32 asize, u16 name_off,
u8 name_len, u32 asize, u16 name_off, CLST svcn, struct ATTR_LIST_ENTRY **ins_le)
CLST svcn)
{ {
int err; int err;
struct ATTRIB *attr; struct ATTRIB *attr;
@ -507,6 +506,8 @@ static struct ATTRIB *ni_ins_new_attr(struct ntfs_inode *ni,
le->ref = ref; le->ref = ref;
out: out:
if (ins_le)
*ins_le = le;
return attr; return attr;
} }
@ -599,7 +600,7 @@ static int ni_repack(struct ntfs_inode *ni)
if (next_svcn >= evcn + 1) { if (next_svcn >= evcn + 1) {
/* We can remove this attribute segment. */ /* We can remove this attribute segment. */
al_remove_le(ni, le); al_remove_le(ni, le);
mi_remove_attr(mi, attr); mi_remove_attr(NULL, mi, attr);
le = le_p; le = le_p;
continue; continue;
} }
@ -695,8 +696,8 @@ static int ni_try_remove_attr_list(struct ntfs_inode *ni)
free -= asize; free -= asize;
} }
/* Is seems that attribute list can be removed from primary record. */ /* It seems that attribute list can be removed from primary record. */
mi_remove_attr(&ni->mi, attr_list); mi_remove_attr(NULL, &ni->mi, attr_list);
/* /*
* Repeat the cycle above and move all attributes to primary record. * Repeat the cycle above and move all attributes to primary record.
@ -724,7 +725,7 @@ static int ni_try_remove_attr_list(struct ntfs_inode *ni)
attr_ins->id = id; attr_ins->id = id;
/* Remove from original record. */ /* Remove from original record. */
mi_remove_attr(mi, attr); mi_remove_attr(NULL, mi, attr);
} }
run_deallocate(sbi, &ni->attr_list.run, true); run_deallocate(sbi, &ni->attr_list.run, true);
@ -842,7 +843,8 @@ int ni_create_attr_list(struct ntfs_inode *ni)
memcpy(attr, b, asize); memcpy(attr, b, asize);
attr->id = le_b[nb]->id; attr->id = le_b[nb]->id;
WARN_ON(!mi_remove_attr(&ni->mi, b)); /* Remove from primary record. */
WARN_ON(!mi_remove_attr(NULL, &ni->mi, b));
if (to_free <= asize) if (to_free <= asize)
break; break;
@ -883,7 +885,8 @@ int ni_create_attr_list(struct ntfs_inode *ni)
static int ni_ins_attr_ext(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le, static int ni_ins_attr_ext(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le,
enum ATTR_TYPE type, const __le16 *name, u8 name_len, enum ATTR_TYPE type, const __le16 *name, u8 name_len,
u32 asize, CLST svcn, u16 name_off, bool force_ext, u32 asize, CLST svcn, u16 name_off, bool force_ext,
struct ATTRIB **ins_attr, struct mft_inode **ins_mi) struct ATTRIB **ins_attr, struct mft_inode **ins_mi,
struct ATTR_LIST_ENTRY **ins_le)
{ {
struct ATTRIB *attr; struct ATTRIB *attr;
struct mft_inode *mi; struct mft_inode *mi;
@ -956,12 +959,14 @@ static int ni_ins_attr_ext(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le,
/* Try to insert attribute into this subrecord. */ /* Try to insert attribute into this subrecord. */
attr = ni_ins_new_attr(ni, mi, le, type, name, name_len, asize, attr = ni_ins_new_attr(ni, mi, le, type, name, name_len, asize,
name_off, svcn); name_off, svcn, ins_le);
if (!attr) if (!attr)
continue; continue;
if (ins_attr) if (ins_attr)
*ins_attr = attr; *ins_attr = attr;
if (ins_mi)
*ins_mi = mi;
return 0; return 0;
} }
@ -977,7 +982,7 @@ static int ni_ins_attr_ext(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le,
} }
attr = ni_ins_new_attr(ni, mi, le, type, name, name_len, asize, attr = ni_ins_new_attr(ni, mi, le, type, name, name_len, asize,
name_off, svcn); name_off, svcn, ins_le);
if (!attr) if (!attr)
goto out2; goto out2;
@ -1016,7 +1021,8 @@ static int ni_ins_attr_ext(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le,
static int ni_insert_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, static int ni_insert_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
const __le16 *name, u8 name_len, u32 asize, const __le16 *name, u8 name_len, u32 asize,
u16 name_off, CLST svcn, struct ATTRIB **ins_attr, u16 name_off, CLST svcn, struct ATTRIB **ins_attr,
struct mft_inode **ins_mi) struct mft_inode **ins_mi,
struct ATTR_LIST_ENTRY **ins_le)
{ {
struct ntfs_sb_info *sbi = ni->mi.sbi; struct ntfs_sb_info *sbi = ni->mi.sbi;
int err; int err;
@ -1045,7 +1051,7 @@ static int ni_insert_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
if (asize <= free) { if (asize <= free) {
attr = ni_ins_new_attr(ni, &ni->mi, NULL, type, name, name_len, attr = ni_ins_new_attr(ni, &ni->mi, NULL, type, name, name_len,
asize, name_off, svcn); asize, name_off, svcn, ins_le);
if (attr) { if (attr) {
if (ins_attr) if (ins_attr)
*ins_attr = attr; *ins_attr = attr;
@ -1059,7 +1065,8 @@ static int ni_insert_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
if (!is_mft || type != ATTR_DATA || svcn) { if (!is_mft || type != ATTR_DATA || svcn) {
/* This ATTRIB will be external. */ /* This ATTRIB will be external. */
err = ni_ins_attr_ext(ni, NULL, type, name, name_len, asize, err = ni_ins_attr_ext(ni, NULL, type, name, name_len, asize,
svcn, name_off, false, ins_attr, ins_mi); svcn, name_off, false, ins_attr, ins_mi,
ins_le);
goto out; goto out;
} }
@ -1117,7 +1124,7 @@ static int ni_insert_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
t16 = le16_to_cpu(attr->name_off); t16 = le16_to_cpu(attr->name_off);
err = ni_ins_attr_ext(ni, le, attr->type, Add2Ptr(attr, t16), err = ni_ins_attr_ext(ni, le, attr->type, Add2Ptr(attr, t16),
attr->name_len, t32, attr_svcn(attr), t16, attr->name_len, t32, attr_svcn(attr), t16,
false, &eattr, NULL); false, &eattr, NULL, NULL);
if (err) if (err)
return err; return err;
@ -1125,8 +1132,8 @@ static int ni_insert_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
memcpy(eattr, attr, t32); memcpy(eattr, attr, t32);
eattr->id = id; eattr->id = id;
/* Remove attrib from primary record. */ /* Remove from primary record. */
mi_remove_attr(&ni->mi, attr); mi_remove_attr(NULL, &ni->mi, attr);
/* attr now points to next attribute. */ /* attr now points to next attribute. */
if (attr->type == ATTR_END) if (attr->type == ATTR_END)
@ -1136,7 +1143,7 @@ static int ni_insert_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
; ;
attr = ni_ins_new_attr(ni, &ni->mi, NULL, type, name, name_len, asize, attr = ni_ins_new_attr(ni, &ni->mi, NULL, type, name, name_len, asize,
name_off, svcn); name_off, svcn, ins_le);
if (!attr) { if (!attr) {
err = -EINVAL; err = -EINVAL;
goto out; goto out;
@ -1251,7 +1258,7 @@ static int ni_expand_mft_list(struct ntfs_inode *ni)
*/ */
attr = ni_ins_new_attr(ni, mi_min, NULL, ATTR_DATA, NULL, 0, attr = ni_ins_new_attr(ni, mi_min, NULL, ATTR_DATA, NULL, 0,
SIZEOF_NONRESIDENT + run_size, SIZEOF_NONRESIDENT + run_size,
SIZEOF_NONRESIDENT, svcn); SIZEOF_NONRESIDENT, svcn, NULL);
if (!attr) { if (!attr) {
err = -EINVAL; err = -EINVAL;
goto out; goto out;
@ -1315,14 +1322,15 @@ int ni_expand_list(struct ntfs_inode *ni)
err = ni_ins_attr_ext(ni, le, attr->type, attr_name(attr), err = ni_ins_attr_ext(ni, le, attr->type, attr_name(attr),
attr->name_len, asize, attr_svcn(attr), attr->name_len, asize, attr_svcn(attr),
le16_to_cpu(attr->name_off), true, le16_to_cpu(attr->name_off), true,
&ins_attr, NULL); &ins_attr, NULL, NULL);
if (err) if (err)
goto out; goto out;
memcpy(ins_attr, attr, asize); memcpy(ins_attr, attr, asize);
ins_attr->id = le->id; ins_attr->id = le->id;
mi_remove_attr(&ni->mi, attr); /* Remove from primary record. */
mi_remove_attr(NULL, &ni->mi, attr);
done += asize; done += asize;
goto out; goto out;
@ -1382,7 +1390,7 @@ int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type,
} }
err = ni_insert_attr(ni, type, name, name_len, asize, name_off, svcn, err = ni_insert_attr(ni, type, name, name_len, asize, name_off, svcn,
&attr, mi); &attr, mi, NULL);
if (err) if (err)
goto out; goto out;
@ -1422,7 +1430,8 @@ int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type,
*/ */
int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, int ni_insert_resident(struct ntfs_inode *ni, u32 data_size,
enum ATTR_TYPE type, const __le16 *name, u8 name_len, enum ATTR_TYPE type, const __le16 *name, u8 name_len,
struct ATTRIB **new_attr, struct mft_inode **mi) struct ATTRIB **new_attr, struct mft_inode **mi,
struct ATTR_LIST_ENTRY **le)
{ {
int err; int err;
u32 name_size = ALIGN(name_len * sizeof(short), 8); u32 name_size = ALIGN(name_len * sizeof(short), 8);
@ -1430,7 +1439,7 @@ int ni_insert_resident(struct ntfs_inode *ni, u32 data_size,
struct ATTRIB *attr; struct ATTRIB *attr;
err = ni_insert_attr(ni, type, name, name_len, asize, SIZEOF_RESIDENT, err = ni_insert_attr(ni, type, name, name_len, asize, SIZEOF_RESIDENT,
0, &attr, mi); 0, &attr, mi, le);
if (err) if (err)
return err; return err;
@ -1439,8 +1448,13 @@ int ni_insert_resident(struct ntfs_inode *ni, u32 data_size,
attr->res.data_size = cpu_to_le32(data_size); attr->res.data_size = cpu_to_le32(data_size);
attr->res.data_off = cpu_to_le16(SIZEOF_RESIDENT + name_size); attr->res.data_off = cpu_to_le16(SIZEOF_RESIDENT + name_size);
if (type == ATTR_NAME) if (type == ATTR_NAME) {
attr->res.flags = RESIDENT_FLAG_INDEXED; attr->res.flags = RESIDENT_FLAG_INDEXED;
/* is_attr_indexed(attr)) == true */
le16_add_cpu(&ni->mi.mrec->hard_links, +1);
ni->mi.dirty = true;
}
attr->res.res = 0; attr->res.res = 0;
if (new_attr) if (new_attr)
@ -1452,22 +1466,13 @@ int ni_insert_resident(struct ntfs_inode *ni, u32 data_size,
/* /*
* ni_remove_attr_le - Remove attribute from record. * ni_remove_attr_le - Remove attribute from record.
*/ */
int ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr,
struct ATTR_LIST_ENTRY *le) struct mft_inode *mi, struct ATTR_LIST_ENTRY *le)
{ {
int err; mi_remove_attr(ni, mi, attr);
struct mft_inode *mi;
err = ni_load_mi(ni, le, &mi);
if (err)
return err;
mi_remove_attr(mi, attr);
if (le) if (le)
al_remove_le(ni, le); al_remove_le(ni, le);
return 0;
} }
/* /*
@ -1549,10 +1554,12 @@ int ni_delete_all(struct ntfs_inode *ni)
/* ni_fname_name /* ni_fname_name
* *
*Return: File name attribute by its value. */ * Return: File name attribute by its value.
*/
struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni,
const struct cpu_str *uni, const struct cpu_str *uni,
const struct MFT_REF *home_dir, const struct MFT_REF *home_dir,
struct mft_inode **mi,
struct ATTR_LIST_ENTRY **le) struct ATTR_LIST_ENTRY **le)
{ {
struct ATTRIB *attr = NULL; struct ATTRIB *attr = NULL;
@ -1562,7 +1569,7 @@ struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni,
/* Enumerate all names. */ /* Enumerate all names. */
next: next:
attr = ni_find_attr(ni, attr, le, ATTR_NAME, NULL, 0, NULL, NULL); attr = ni_find_attr(ni, attr, le, ATTR_NAME, NULL, 0, NULL, mi);
if (!attr) if (!attr)
return NULL; return NULL;
@ -1592,6 +1599,7 @@ struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni,
* Return: File name attribute with given type. * Return: File name attribute with given type.
*/ */
struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type,
struct mft_inode **mi,
struct ATTR_LIST_ENTRY **le) struct ATTR_LIST_ENTRY **le)
{ {
struct ATTRIB *attr = NULL; struct ATTRIB *attr = NULL;
@ -1599,10 +1607,12 @@ struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type,
*le = NULL; *le = NULL;
if (FILE_NAME_POSIX == name_type)
return NULL;
/* Enumerate all names. */ /* Enumerate all names. */
for (;;) { for (;;) {
attr = ni_find_attr(ni, attr, le, ATTR_NAME, NULL, 0, NULL, attr = ni_find_attr(ni, attr, le, ATTR_NAME, NULL, 0, NULL, mi);
NULL);
if (!attr) if (!attr)
return NULL; return NULL;
@ -2788,6 +2798,222 @@ int ni_write_frame(struct ntfs_inode *ni, struct page **pages,
return err; return err;
} }
/*
* ni_remove_name - Removes name 'de' from MFT and from directory.
* 'de2' and 'undo_step' are used to restore MFT/dir, if error occurs.
*/
int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step)
{
int err;
struct ntfs_sb_info *sbi = ni->mi.sbi;
struct ATTR_FILE_NAME *de_name = (struct ATTR_FILE_NAME *)(de + 1);
struct ATTR_FILE_NAME *fname;
struct ATTR_LIST_ENTRY *le;
struct mft_inode *mi;
u16 de_key_size = le16_to_cpu(de->key_size);
u8 name_type;
*undo_step = 0;
/* Find name in record. */
mi_get_ref(&dir_ni->mi, &de_name->home);
fname = ni_fname_name(ni, (struct cpu_str *)&de_name->name_len,
&de_name->home, &mi, &le);
if (!fname)
return -ENOENT;
memcpy(&de_name->dup, &fname->dup, sizeof(struct NTFS_DUP_INFO));
name_type = paired_name(fname->type);
/* Mark ntfs as dirty. It will be cleared at umount. */
ntfs_set_state(sbi, NTFS_DIRTY_DIRTY);
/* Step 1: Remove name from directory. */
err = indx_delete_entry(&dir_ni->dir, dir_ni, fname, de_key_size, sbi);
if (err)
return err;
/* Step 2: Remove name from MFT. */
ni_remove_attr_le(ni, attr_from_name(fname), mi, le);
*undo_step = 2;
/* Get paired name. */
fname = ni_fname_type(ni, name_type, &mi, &le);
if (fname) {
u16 de2_key_size = fname_full_size(fname);
*de2 = Add2Ptr(de, 1024);
(*de2)->key_size = cpu_to_le16(de2_key_size);
memcpy(*de2 + 1, fname, de2_key_size);
/* Step 3: Remove paired name from directory. */
err = indx_delete_entry(&dir_ni->dir, dir_ni, fname,
de2_key_size, sbi);
if (err)
return err;
/* Step 4: Remove paired name from MFT. */
ni_remove_attr_le(ni, attr_from_name(fname), mi, le);
*undo_step = 4;
}
return 0;
}
/*
* ni_remove_name_undo - Paired function for ni_remove_name.
*
* Return: True if ok
*/
bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
struct NTFS_DE *de, struct NTFS_DE *de2, int undo_step)
{
struct ntfs_sb_info *sbi = ni->mi.sbi;
struct ATTRIB *attr;
u16 de_key_size = de2 ? le16_to_cpu(de2->key_size) : 0;
switch (undo_step) {
case 4:
if (ni_insert_resident(ni, de_key_size, ATTR_NAME, NULL, 0,
&attr, NULL, NULL)) {
return false;
}
memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), de2 + 1, de_key_size);
mi_get_ref(&ni->mi, &de2->ref);
de2->size = cpu_to_le16(ALIGN(de_key_size, 8) +
sizeof(struct NTFS_DE));
de2->flags = 0;
de2->res = 0;
if (indx_insert_entry(&dir_ni->dir, dir_ni, de2, sbi, NULL,
1)) {
return false;
}
fallthrough;
case 2:
de_key_size = le16_to_cpu(de->key_size);
if (ni_insert_resident(ni, de_key_size, ATTR_NAME, NULL, 0,
&attr, NULL, NULL)) {
return false;
}
memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), de + 1, de_key_size);
mi_get_ref(&ni->mi, &de->ref);
if (indx_insert_entry(&dir_ni->dir, dir_ni, de, sbi, NULL, 1)) {
return false;
}
}
return true;
}
/*
* ni_add_name - Add new name in MFT and in directory.
*/
int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
struct NTFS_DE *de)
{
int err;
struct ATTRIB *attr;
struct ATTR_LIST_ENTRY *le;
struct mft_inode *mi;
struct ATTR_FILE_NAME *de_name = (struct ATTR_FILE_NAME *)(de + 1);
u16 de_key_size = le16_to_cpu(de->key_size);
mi_get_ref(&ni->mi, &de->ref);
mi_get_ref(&dir_ni->mi, &de_name->home);
/* Insert new name in MFT. */
err = ni_insert_resident(ni, de_key_size, ATTR_NAME, NULL, 0, &attr,
&mi, &le);
if (err)
return err;
memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), de_name, de_key_size);
/* Insert new name in directory. */
err = indx_insert_entry(&dir_ni->dir, dir_ni, de, ni->mi.sbi, NULL, 0);
if (err)
ni_remove_attr_le(ni, attr, mi, le);
return err;
}
/*
* ni_rename - Remove one name and insert new name.
*/
int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni,
struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de,
bool *is_bad)
{
int err;
struct NTFS_DE *de2 = NULL;
int undo = 0;
/*
* There are two possible ways to rename:
* 1) Add new name and remove old name.
* 2) Remove old name and add new name.
*
* In most cases (not all!) adding new name in MFT and in directory can
* allocate additional cluster(s).
* Second way may result to bad inode if we can't add new name
* and then can't restore (add) old name.
*/
/*
* Way 1 - Add new + remove old.
*/
err = ni_add_name(new_dir_ni, ni, new_de);
if (!err) {
err = ni_remove_name(dir_ni, ni, de, &de2, &undo);
if (err && ni_remove_name(new_dir_ni, ni, new_de, &de2, &undo))
*is_bad = true;
}
/*
* Way 2 - Remove old + add new.
*/
/*
* err = ni_remove_name(dir_ni, ni, de, &de2, &undo);
* if (!err) {
* err = ni_add_name(new_dir_ni, ni, new_de);
* if (err && !ni_remove_name_undo(dir_ni, ni, de, de2, undo))
* *is_bad = true;
* }
*/
return err;
}
/*
* ni_is_dirty - Return: True if 'ni' requires ni_write_inode.
*/
bool ni_is_dirty(struct inode *inode)
{
struct ntfs_inode *ni = ntfs_i(inode);
struct rb_node *node;
if (ni->mi.dirty || ni->attr_list.dirty ||
(ni->ni_flags & NI_FLAG_UPDATE_PARENT))
return true;
for (node = rb_first(&ni->mi_tree); node; node = rb_next(node)) {
if (rb_entry(node, struct mft_inode, node)->dirty)
return true;
}
return false;
}
/* /*
* ni_update_parent * ni_update_parent
* *
@ -2802,8 +3028,6 @@ static bool ni_update_parent(struct ntfs_inode *ni, struct NTFS_DUP_INFO *dup,
struct ntfs_sb_info *sbi = ni->mi.sbi; struct ntfs_sb_info *sbi = ni->mi.sbi;
struct super_block *sb = sbi->sb; struct super_block *sb = sbi->sb;
bool re_dirty = false; bool re_dirty = false;
bool active = sb->s_flags & SB_ACTIVE;
bool upd_parent = ni->ni_flags & NI_FLAG_UPDATE_PARENT;
if (ni->mi.mrec->flags & RECORD_FLAG_DIR) { if (ni->mi.mrec->flags & RECORD_FLAG_DIR) {
dup->fa |= FILE_ATTRIBUTE_DIRECTORY; dup->fa |= FILE_ATTRIBUTE_DIRECTORY;
@ -2867,19 +3091,9 @@ static bool ni_update_parent(struct ntfs_inode *ni, struct NTFS_DUP_INFO *dup,
struct ATTR_FILE_NAME *fname; struct ATTR_FILE_NAME *fname;
fname = resident_data_ex(attr, SIZEOF_ATTRIBUTE_FILENAME); fname = resident_data_ex(attr, SIZEOF_ATTRIBUTE_FILENAME);
if (!fname) if (!fname || !memcmp(&fname->dup, dup, sizeof(fname->dup)))
continue; continue;
if (memcmp(&fname->dup, dup, sizeof(fname->dup))) {
memcpy(&fname->dup, dup, sizeof(fname->dup));
mi->dirty = true;
} else if (!upd_parent) {
continue;
}
if (!active)
continue; /* Avoid __wait_on_freeing_inode(inode); */
/* ntfs_iget5 may sleep. */ /* ntfs_iget5 may sleep. */
dir = ntfs_iget5(sb, &fname->home, NULL); dir = ntfs_iget5(sb, &fname->home, NULL);
if (IS_ERR(dir)) { if (IS_ERR(dir)) {
@ -2898,6 +3112,8 @@ static bool ni_update_parent(struct ntfs_inode *ni, struct NTFS_DUP_INFO *dup,
} else { } else {
indx_update_dup(dir_ni, sbi, fname, dup, sync); indx_update_dup(dir_ni, sbi, fname, dup, sync);
ni_unlock(dir_ni); ni_unlock(dir_ni);
memcpy(&fname->dup, dup, sizeof(fname->dup));
mi->dirty = true;
} }
} }
iput(dir); iput(dir);
@ -2969,7 +3185,9 @@ int ni_write_inode(struct inode *inode, int sync, const char *hint)
ni->mi.dirty = true; ni->mi.dirty = true;
if (!ntfs_is_meta_file(sbi, inode->i_ino) && if (!ntfs_is_meta_file(sbi, inode->i_ino) &&
(modified || (ni->ni_flags & NI_FLAG_UPDATE_PARENT))) { (modified || (ni->ni_flags & NI_FLAG_UPDATE_PARENT))
/* Avoid __wait_on_freeing_inode(inode). */
&& (sb->s_flags & SB_ACTIVE)) {
dup.cr_time = std->cr_time; dup.cr_time = std->cr_time;
/* Not critical if this function fail. */ /* Not critical if this function fail. */
re_dirty = ni_update_parent(ni, &dup, sync); re_dirty = ni_update_parent(ni, &dup, sync);
@ -3033,7 +3251,7 @@ int ni_write_inode(struct inode *inode, int sync, const char *hint)
return err; return err;
} }
if (re_dirty && (sb->s_flags & SB_ACTIVE)) if (re_dirty)
mark_inode_dirty_sync(inode); mark_inode_dirty_sync(inode);
return 0; return 0;

91
fs/ntfs3/fsntfs.c
View file

@ -358,29 +358,25 @@ int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len,
enum ALLOCATE_OPT opt) enum ALLOCATE_OPT opt)
{ {
int err; int err;
CLST alen = 0;
struct super_block *sb = sbi->sb; struct super_block *sb = sbi->sb;
size_t a_lcn, zlen, zeroes, zlcn, zlen2, ztrim, new_zlen; size_t alcn, zlen, zeroes, zlcn, zlen2, ztrim, new_zlen;
struct wnd_bitmap *wnd = &sbi->used.bitmap; struct wnd_bitmap *wnd = &sbi->used.bitmap;
down_write_nested(&wnd->rw_lock, BITMAP_MUTEX_CLUSTERS); down_write_nested(&wnd->rw_lock, BITMAP_MUTEX_CLUSTERS);
if (opt & ALLOCATE_MFT) { if (opt & ALLOCATE_MFT) {
CLST alen;
zlen = wnd_zone_len(wnd); zlen = wnd_zone_len(wnd);
if (!zlen) { if (!zlen) {
err = ntfs_refresh_zone(sbi); err = ntfs_refresh_zone(sbi);
if (err) if (err)
goto out; goto out;
zlen = wnd_zone_len(wnd); zlen = wnd_zone_len(wnd);
}
if (!zlen) { if (!zlen) {
ntfs_err(sbi->sb, ntfs_err(sbi->sb, "no free space to extend mft");
"no free space to extend mft"); goto out;
err = -ENOSPC;
goto out;
}
} }
lcn = wnd_zone_bit(wnd); lcn = wnd_zone_bit(wnd);
@ -389,14 +385,13 @@ int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len,
wnd_zone_set(wnd, lcn + alen, zlen - alen); wnd_zone_set(wnd, lcn + alen, zlen - alen);
err = wnd_set_used(wnd, lcn, alen); err = wnd_set_used(wnd, lcn, alen);
if (err) if (err) {
goto out; up_write(&wnd->rw_lock);
return err;
*new_lcn = lcn; }
*new_len = alen; alcn = lcn;
goto ok; goto out;
} }
/* /*
* 'Cause cluster 0 is always used this value means that we should use * 'Cause cluster 0 is always used this value means that we should use
* cached value of 'next_free_lcn' to improve performance. * cached value of 'next_free_lcn' to improve performance.
@ -407,22 +402,17 @@ int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len,
if (lcn >= wnd->nbits) if (lcn >= wnd->nbits)
lcn = 0; lcn = 0;
*new_len = wnd_find(wnd, len, lcn, BITMAP_FIND_MARK_AS_USED, &a_lcn); alen = wnd_find(wnd, len, lcn, BITMAP_FIND_MARK_AS_USED, &alcn);
if (*new_len) { if (alen)
*new_lcn = a_lcn; goto out;
goto ok;
}
/* Try to use clusters from MftZone. */ /* Try to use clusters from MftZone. */
zlen = wnd_zone_len(wnd); zlen = wnd_zone_len(wnd);
zeroes = wnd_zeroes(wnd); zeroes = wnd_zeroes(wnd);
/* Check too big request. */ /* Check too big request */
if (len > zeroes + zlen) if (len > zeroes + zlen || zlen <= NTFS_MIN_MFT_ZONE)
goto no_space; goto out;
if (zlen <= NTFS_MIN_MFT_ZONE)
goto no_space;
/* How many clusters to cat from zone. */ /* How many clusters to cat from zone. */
zlcn = wnd_zone_bit(wnd); zlcn = wnd_zone_bit(wnd);
@ -439,31 +429,24 @@ int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len,
wnd_zone_set(wnd, zlcn, new_zlen); wnd_zone_set(wnd, zlcn, new_zlen);
/* Allocate continues clusters. */ /* Allocate continues clusters. */
*new_len = alen = wnd_find(wnd, len, 0,
wnd_find(wnd, len, 0, BITMAP_FIND_MARK_AS_USED | BITMAP_FIND_FULL, &alcn);
BITMAP_FIND_MARK_AS_USED | BITMAP_FIND_FULL, &a_lcn);
if (*new_len) {
*new_lcn = a_lcn;
goto ok;
}
no_space:
up_write(&wnd->rw_lock);
return -ENOSPC;
ok:
err = 0;
ntfs_unmap_meta(sb, *new_lcn, *new_len);
if (opt & ALLOCATE_MFT)
goto out;
/* Set hint for next requests. */
sbi->used.next_free_lcn = *new_lcn + *new_len;
out: out:
if (alen) {
err = 0;
*new_len = alen;
*new_lcn = alcn;
ntfs_unmap_meta(sb, alcn, alen);
/* Set hint for next requests. */
if (!(opt & ALLOCATE_MFT))
sbi->used.next_free_lcn = alcn + alen;
} else {
err = -ENOSPC;
}
up_write(&wnd->rw_lock); up_write(&wnd->rw_lock);
return err; return err;
} }
@ -2226,7 +2209,7 @@ int ntfs_insert_security(struct ntfs_sb_info *sbi,
sii_e.sec_id = d_security->key.sec_id; sii_e.sec_id = d_security->key.sec_id;
memcpy(&sii_e.sec_hdr, d_security, SIZEOF_SECURITY_HDR); memcpy(&sii_e.sec_hdr, d_security, SIZEOF_SECURITY_HDR);
err = indx_insert_entry(indx_sii, ni, &sii_e.de, NULL, NULL); err = indx_insert_entry(indx_sii, ni, &sii_e.de, NULL, NULL, 0);
if (err) if (err)
goto out; goto out;
@ -2247,7 +2230,7 @@ int ntfs_insert_security(struct ntfs_sb_info *sbi,
fnd_clear(fnd_sdh); fnd_clear(fnd_sdh);
err = indx_insert_entry(indx_sdh, ni, &sdh_e.de, (void *)(size_t)1, err = indx_insert_entry(indx_sdh, ni, &sdh_e.de, (void *)(size_t)1,
fnd_sdh); fnd_sdh, 0);
if (err) if (err)
goto out; goto out;
@ -2385,7 +2368,7 @@ int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag,
mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_REPARSE); mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_REPARSE);
err = indx_insert_entry(indx, ni, &re.de, NULL, NULL); err = indx_insert_entry(indx, ni, &re.de, NULL, NULL, 0);
mark_inode_dirty(&ni->vfs_inode); mark_inode_dirty(&ni->vfs_inode);
ni_unlock(ni); ni_unlock(ni);

45
fs/ntfs3/index.c
View file

@ -1427,7 +1427,7 @@ static int indx_create_allocate(struct ntfs_index *indx, struct ntfs_inode *ni,
alloc->nres.valid_size = alloc->nres.data_size = cpu_to_le64(data_size); alloc->nres.valid_size = alloc->nres.data_size = cpu_to_le64(data_size);
err = ni_insert_resident(ni, bitmap_size(1), ATTR_BITMAP, in->name, err = ni_insert_resident(ni, bitmap_size(1), ATTR_BITMAP, in->name,
in->name_len, &bitmap, NULL); in->name_len, &bitmap, NULL, NULL);
if (err) if (err)
goto out2; goto out2;
@ -1443,7 +1443,7 @@ static int indx_create_allocate(struct ntfs_index *indx, struct ntfs_inode *ni,
return 0; return 0;
out2: out2:
mi_remove_attr(&ni->mi, alloc); mi_remove_attr(NULL, &ni->mi, alloc);
out1: out1:
run_deallocate(sbi, &run, false); run_deallocate(sbi, &run, false);
@ -1529,24 +1529,24 @@ static int indx_add_allocate(struct ntfs_index *indx, struct ntfs_inode *ni,
/* /*
* indx_insert_into_root - Attempt to insert an entry into the index root. * indx_insert_into_root - Attempt to insert an entry into the index root.
* *
* @undo - True if we undoing previous remove.
* If necessary, it will twiddle the index b-tree. * If necessary, it will twiddle the index b-tree.
*/ */
static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni, static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
const struct NTFS_DE *new_de, const struct NTFS_DE *new_de,
struct NTFS_DE *root_de, const void *ctx, struct NTFS_DE *root_de, const void *ctx,
struct ntfs_fnd *fnd) struct ntfs_fnd *fnd, bool undo)
{ {
int err = 0; int err = 0;
struct NTFS_DE *e, *e0, *re; struct NTFS_DE *e, *e0, *re;
struct mft_inode *mi; struct mft_inode *mi;
struct ATTRIB *attr; struct ATTRIB *attr;
struct MFT_REC *rec;
struct INDEX_HDR *hdr; struct INDEX_HDR *hdr;
struct indx_node *n; struct indx_node *n;
CLST new_vbn; CLST new_vbn;
__le64 *sub_vbn, t_vbn; __le64 *sub_vbn, t_vbn;
u16 new_de_size; u16 new_de_size;
u32 hdr_used, hdr_total, asize, used, to_move; u32 hdr_used, hdr_total, asize, to_move;
u32 root_size, new_root_size; u32 root_size, new_root_size;
struct ntfs_sb_info *sbi; struct ntfs_sb_info *sbi;
int ds_root; int ds_root;
@ -1559,12 +1559,11 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
/* /*
* Try easy case: * Try easy case:
* hdr_insert_de will succeed if there's room the root for the new entry. * hdr_insert_de will succeed if there's
* room the root for the new entry.
*/ */
hdr = &root->ihdr; hdr = &root->ihdr;
sbi = ni->mi.sbi; sbi = ni->mi.sbi;
rec = mi->mrec;
used = le32_to_cpu(rec->used);
new_de_size = le16_to_cpu(new_de->size); new_de_size = le16_to_cpu(new_de->size);
hdr_used = le32_to_cpu(hdr->used); hdr_used = le32_to_cpu(hdr->used);
hdr_total = le32_to_cpu(hdr->total); hdr_total = le32_to_cpu(hdr->total);
@ -1573,9 +1572,9 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
ds_root = new_de_size + hdr_used - hdr_total; ds_root = new_de_size + hdr_used - hdr_total;
if (used + ds_root < sbi->max_bytes_per_attr) { /* If 'undo' is set then reduce requirements. */
/* Make a room for new elements. */ if ((undo || asize + ds_root < sbi->max_bytes_per_attr) &&
mi_resize_attr(mi, attr, ds_root); mi_resize_attr(mi, attr, ds_root)) {
hdr->total = cpu_to_le32(hdr_total + ds_root); hdr->total = cpu_to_le32(hdr_total + ds_root);
e = hdr_insert_de(indx, hdr, new_de, root_de, ctx); e = hdr_insert_de(indx, hdr, new_de, root_de, ctx);
WARN_ON(!e); WARN_ON(!e);
@ -1629,7 +1628,7 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
sizeof(u64); sizeof(u64);
ds_root = new_root_size - root_size; ds_root = new_root_size - root_size;
if (ds_root > 0 && used + ds_root > sbi->max_bytes_per_attr) { if (ds_root > 0 && asize + ds_root > sbi->max_bytes_per_attr) {
/* Make root external. */ /* Make root external. */
err = -EOPNOTSUPP; err = -EOPNOTSUPP;
goto out_free_re; goto out_free_re;
@ -1710,7 +1709,7 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
put_indx_node(n); put_indx_node(n);
fnd_clear(fnd); fnd_clear(fnd);
err = indx_insert_entry(indx, ni, new_de, ctx, fnd); err = indx_insert_entry(indx, ni, new_de, ctx, fnd, undo);
goto out_free_root; goto out_free_root;
} }
@ -1854,7 +1853,7 @@ indx_insert_into_buffer(struct ntfs_index *indx, struct ntfs_inode *ni,
*/ */
if (!level) { if (!level) {
/* Insert in root. */ /* Insert in root. */
err = indx_insert_into_root(indx, ni, up_e, NULL, ctx, fnd); err = indx_insert_into_root(indx, ni, up_e, NULL, ctx, fnd, 0);
if (err) if (err)
goto out; goto out;
} else { } else {
@ -1876,10 +1875,12 @@ indx_insert_into_buffer(struct ntfs_index *indx, struct ntfs_inode *ni,
/* /*
* indx_insert_entry - Insert new entry into index. * indx_insert_entry - Insert new entry into index.
*
* @undo - True if we undoing previous remove.
*/ */
int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni,
const struct NTFS_DE *new_de, const void *ctx, const struct NTFS_DE *new_de, const void *ctx,
struct ntfs_fnd *fnd) struct ntfs_fnd *fnd, bool undo)
{ {
int err; int err;
int diff; int diff;
@ -1925,7 +1926,7 @@ int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni,
* new entry into it. * new entry into it.
*/ */
err = indx_insert_into_root(indx, ni, new_de, fnd->root_de, ctx, err = indx_insert_into_root(indx, ni, new_de, fnd->root_de, ctx,
fnd); fnd, undo);
if (err) if (err)
goto out; goto out;
} else { } else {
@ -2302,7 +2303,7 @@ int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni,
fnd->level - 1, fnd->level - 1,
fnd) fnd)
: indx_insert_into_root(indx, ni, re, e, : indx_insert_into_root(indx, ni, re, e,
ctx, fnd); ctx, fnd, 0);
kfree(re); kfree(re);
if (err) if (err)
@ -2507,7 +2508,7 @@ int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni,
* Re-insert the entry into the tree. * Re-insert the entry into the tree.
* Find the spot the tree where we want to insert the new entry. * Find the spot the tree where we want to insert the new entry.
*/ */
err = indx_insert_entry(indx, ni, me, ctx, fnd); err = indx_insert_entry(indx, ni, me, ctx, fnd, 0);
kfree(me); kfree(me);
if (err) if (err)
goto out; goto out;
@ -2595,10 +2596,8 @@ int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi,
struct ntfs_index *indx = &ni->dir; struct ntfs_index *indx = &ni->dir;
fnd = fnd_get(); fnd = fnd_get();
if (!fnd) { if (!fnd)
err = -ENOMEM; return -ENOMEM;
goto out1;
}
root = indx_get_root(indx, ni, NULL, &mi); root = indx_get_root(indx, ni, NULL, &mi);
if (!root) { if (!root) {
@ -2645,7 +2644,5 @@ int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi,
out: out:
fnd_put(fnd); fnd_put(fnd);
out1:
return err; return err;
} }

275
fs/ntfs3/inode.c
View file

@ -399,6 +399,12 @@ static struct inode *ntfs_read_mft(struct inode *inode,
goto out; 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); set_nlink(inode, names);
if (S_ISDIR(mode)) { if (S_ISDIR(mode)) {
@ -1279,6 +1285,7 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
} }
inode = &ni->vfs_inode; inode = &ni->vfs_inode;
inode_init_owner(mnt_userns, inode, dir, mode); inode_init_owner(mnt_userns, inode, dir, mode);
mode = inode->i_mode;
inode->i_atime = inode->i_mtime = inode->i_ctime = ni->i_crtime = inode->i_atime = inode->i_mtime = inode->i_ctime = ni->i_crtime =
current_time(inode); current_time(inode);
@ -1371,6 +1378,7 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
attr = Add2Ptr(attr, asize); attr = Add2Ptr(attr, asize);
} }
attr->id = cpu_to_le16(aid++);
if (fa & FILE_ATTRIBUTE_DIRECTORY) { if (fa & FILE_ATTRIBUTE_DIRECTORY) {
/* /*
* Regular directory or symlink to 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->type = ATTR_ROOT;
attr->size = cpu_to_le32(asize); attr->size = cpu_to_le32(asize);
attr->id = cpu_to_le16(aid++);
attr->name_len = ARRAY_SIZE(I30_NAME); attr->name_len = ARRAY_SIZE(I30_NAME);
attr->name_off = SIZEOF_RESIDENT_LE; attr->name_off = SIZEOF_RESIDENT_LE;
@ -1412,52 +1419,46 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
/* Insert empty ATTR_DATA */ /* Insert empty ATTR_DATA */
attr->type = ATTR_DATA; attr->type = ATTR_DATA;
attr->size = cpu_to_le32(SIZEOF_RESIDENT); attr->size = cpu_to_le32(SIZEOF_RESIDENT);
attr->id = cpu_to_le16(aid++);
attr->name_off = SIZEOF_RESIDENT_LE; attr->name_off = SIZEOF_RESIDENT_LE;
attr->res.data_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->type = ATTR_DATA;
attr->id = cpu_to_le16(aid++); attr->non_res = 1;
attr->nres.evcn = cpu_to_le64(-1ll);
if (S_ISREG(mode)) { if (fa & FILE_ATTRIBUTE_SPARSE_FILE) {
/* Create empty non resident data attribute. */ attr->size = cpu_to_le32(SIZEOF_NONRESIDENT_EX + 8);
attr->non_res = 1; attr->name_off = SIZEOF_NONRESIDENT_EX_LE;
attr->nres.evcn = cpu_to_le64(-1ll); attr->flags = ATTR_FLAG_SPARSED;
if (fa & FILE_ATTRIBUTE_SPARSE_FILE) { asize = SIZEOF_NONRESIDENT_EX + 8;
attr->size = } else if (fa & FILE_ATTRIBUTE_COMPRESSED) {
cpu_to_le32(SIZEOF_NONRESIDENT_EX + 8); attr->size = cpu_to_le32(SIZEOF_NONRESIDENT_EX + 8);
attr->name_off = SIZEOF_NONRESIDENT_EX_LE; attr->name_off = SIZEOF_NONRESIDENT_EX_LE;
attr->flags = ATTR_FLAG_SPARSED; attr->flags = ATTR_FLAG_COMPRESSED;
asize = SIZEOF_NONRESIDENT_EX + 8; attr->nres.c_unit = COMPRESSION_UNIT;
} else if (fa & FILE_ATTRIBUTE_COMPRESSED) { asize = SIZEOF_NONRESIDENT_EX + 8;
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;
} else { } else {
/* Create empty resident data attribute. */ attr->size = cpu_to_le32(SIZEOF_NONRESIDENT + 8);
attr->size = cpu_to_le32(SIZEOF_RESIDENT); attr->name_off = SIZEOF_NONRESIDENT_LE;
attr->name_off = SIZEOF_RESIDENT_LE; asize = SIZEOF_NONRESIDENT + 8;
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->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)) { if (S_ISDIR(mode)) {
@ -1485,7 +1486,8 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
asize = ALIGN(SIZEOF_RESIDENT + nsize, 8); asize = ALIGN(SIZEOF_RESIDENT + nsize, 8);
t16 = PtrOffset(rec, attr); 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 alen;
CLST clst = bytes_to_cluster(sbi, nsize); 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); rec->next_attr_id = cpu_to_le16(aid);
/* Step 2: Add new name in index. */ /* 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) if (err)
goto out6; goto out6;
/* Update current directory record. */
mark_inode_dirty(dir);
inode->i_generation = le16_to_cpu(rec->seq); inode->i_generation = le16_to_cpu(rec->seq);
dir->i_mtime = dir->i_ctime = inode->i_atime; dir->i_mtime = dir->i_ctime = inode->i_atime;
if (S_ISDIR(mode)) { if (S_ISDIR(mode)) {
if (dir->i_mode & S_ISGID)
mode |= S_ISGID;
inode->i_op = &ntfs_dir_inode_operations; inode->i_op = &ntfs_dir_inode_operations;
inode->i_fop = &ntfs_dir_operations; inode->i_fop = &ntfs_dir_operations;
} else if (S_ISLNK(mode)) { } else if (S_ISLNK(mode)) {
@ -1601,8 +1598,8 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
d_instantiate(dentry, inode); d_instantiate(dentry, inode);
ntfs_save_wsl_perm(inode); ntfs_save_wsl_perm(inode);
mark_inode_dirty(inode);
mark_inode_dirty(dir); mark_inode_dirty(dir);
mark_inode_dirty(inode);
/* Normal exit. */ /* Normal exit. */
goto out2; goto out2;
@ -1646,61 +1643,36 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
int ntfs_link_inode(struct inode *inode, struct dentry *dentry) int ntfs_link_inode(struct inode *inode, struct dentry *dentry)
{ {
int err; 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 ntfs_inode *ni = ntfs_i(inode);
struct super_block *sb = inode->i_sb; struct ntfs_sb_info *sbi = inode->i_sb->s_fs_info;
struct ntfs_sb_info *sbi = sb->s_fs_info; struct NTFS_DE *de;
const struct qstr *name = &dentry->d_name; struct ATTR_FILE_NAME *de_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;
/* Allocate PATH_MAX bytes. */ /* Allocate PATH_MAX bytes. */
new_de = __getname(); de = __getname();
if (!new_de) if (!de)
return -ENOMEM; return -ENOMEM;
/* Mark rw ntfs as dirty. It will be cleared at umount. */ /* Mark rw ntfs as dirty. It will be cleared at umount. */
ntfs_set_state(ni->mi.sbi, NTFS_DIRTY_DIRTY); ntfs_set_state(sbi, NTFS_DIRTY_DIRTY);
/* Insert file name. */ /* Construct 'de'. */
err = fill_name_de(sbi, new_de, name, NULL); err = fill_name_de(sbi, de, &dentry->d_name, NULL);
if (err) if (err)
goto out; goto out;
key_size = le16_to_cpu(new_de->key_size); de_name = (struct ATTR_FILE_NAME *)(de + 1);
err = ni_insert_resident(ni, key_size, ATTR_NAME, NULL, 0, &attr, NULL); /* Fill duplicate info. */
if (err) de_name->dup.cr_time = de_name->dup.m_time = de_name->dup.c_time =
goto out; de_name->dup.a_time = kernel2nt(&inode->i_ctime);
de_name->dup.alloc_size = de_name->dup.data_size =
mi_get_ref(&ni->mi, &new_de->ref); cpu_to_le64(inode->i_size);
de_name->dup.fa = ni->std_fa;
fname = (struct ATTR_FILE_NAME *)(new_de + 1); de_name->dup.ea_size = de_name->dup.reparse = 0;
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);
err = indx_insert_entry(&dir_ni->dir, dir_ni, new_de, sbi, NULL);
if (err)
goto out;
le16_add_cpu(&ni->mi.mrec->hard_links, 1);
ni->mi.dirty = true;
err = ni_add_name(ntfs_i(d_inode(dentry->d_parent)), ni, de);
out: out:
__putname(new_de); __putname(de);
return err; return err;
} }
@ -1713,113 +1685,56 @@ int ntfs_link_inode(struct inode *inode, struct dentry *dentry)
int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry) int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry)
{ {
int err; int err;
struct super_block *sb = dir->i_sb; struct ntfs_sb_info *sbi = dir->i_sb->s_fs_info;
struct ntfs_sb_info *sbi = sb->s_fs_info;
struct inode *inode = d_inode(dentry); struct inode *inode = d_inode(dentry);
struct ntfs_inode *ni = ntfs_i(inode); struct ntfs_inode *ni = ntfs_i(inode);
const struct qstr *name = &dentry->d_name;
struct ntfs_inode *dir_ni = ntfs_i(dir); struct ntfs_inode *dir_ni = ntfs_i(dir);
struct ntfs_index *indx = &dir_ni->dir; struct NTFS_DE *de, *de2 = NULL;
struct cpu_str *uni = NULL; int undo_remove;
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;
dir_root = indx_get_root(indx, dir_ni, NULL, NULL); if (ntfs_is_meta_file(sbi, ni->mi.rno))
if (!dir_root)
return -EINVAL; return -EINVAL;
/* Allocate PATH_MAX bytes. */
de = __getname();
if (!de)
return -ENOMEM;
ni_lock(ni); ni_lock(ni);
if (is_dir && !dir_is_empty(inode)) { if (S_ISDIR(inode->i_mode) && !dir_is_empty(inode)) {
err = -ENOTEMPTY; err = -ENOTEMPTY;
goto out1; goto out;
} }
if (ntfs_is_meta_file(sbi, inode->i_ino)) { err = fill_name_de(sbi, de, &dentry->d_name, NULL);
err = -EINVAL;
goto out1;
}
/* Allocate PATH_MAX bytes. */
uni = __getname();
if (!uni) {
err = -ENOMEM;
goto out1;
}
/* Convert input string to unicode. */
err = ntfs_nls_to_utf16(sbi, name->name, name->len, uni, NTFS_NAME_LEN,
UTF16_HOST_ENDIAN);
if (err < 0) if (err < 0)
goto out2; goto out;
/* Mark rw ntfs as dirty. It will be cleared at umount. */ undo_remove = 0;
ntfs_set_state(sbi, NTFS_DIRTY_DIRTY); err = ni_remove_name(dir_ni, ni, de, &de2, &undo_remove);
/* Find name in record. */ if (!err) {
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;
ni_remove_attr_le(ni, attr_from_name(fname), le);
le16_add_cpu(&ni->mi.mrec->hard_links, -1);
}
}
out3:
switch (err) {
case 0:
drop_nlink(inode); drop_nlink(inode);
break; dir->i_mtime = dir->i_ctime = current_time(dir);
case -ENOTEMPTY: mark_inode_dirty(dir);
case -ENOSPC: inode->i_ctime = dir->i_ctime;
case -EROFS: if (inode->i_nlink)
break; mark_inode_dirty(inode);
default: } else if (!ni_remove_name_undo(dir_ni, ni, de, de2, undo_remove)) {
make_bad_inode(inode); 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); out:
mark_inode_dirty(dir);
inode->i_ctime = dir->i_ctime;
if (inode->i_nlink)
mark_inode_dirty(inode);
out2:
__putname(uni);
out1:
ni_unlock(ni); ni_unlock(ni);
__putname(de);
return err; return err;
} }

238
fs/ntfs3/namei.c
View file

@ -152,12 +152,14 @@ static int ntfs_link(struct dentry *ode, struct inode *dir, struct dentry *de)
if (inode != dir) if (inode != dir)
ni_lock(ni); ni_lock(ni);
dir->i_ctime = dir->i_mtime = inode->i_ctime = current_time(inode);
inc_nlink(inode); inc_nlink(inode);
ihold(inode); ihold(inode);
err = ntfs_link_inode(inode, de); err = ntfs_link_inode(inode, de);
if (!err) { if (!err) {
dir->i_ctime = dir->i_mtime = inode->i_ctime =
current_time(dir);
mark_inode_dirty(inode); mark_inode_dirty(inode);
mark_inode_dirty(dir); mark_inode_dirty(dir);
d_instantiate(de, inode); d_instantiate(de, inode);
@ -249,25 +251,26 @@ static int ntfs_rmdir(struct inode *dir, struct dentry *dentry)
/* /*
* ntfs_rename - inode_operations::rename * ntfs_rename - inode_operations::rename
*/ */
static int ntfs_rename(struct user_namespace *mnt_userns, struct inode *old_dir, static int ntfs_rename(struct user_namespace *mnt_userns, struct inode *dir,
struct dentry *old_dentry, struct inode *new_dir, struct dentry *dentry, struct inode *new_dir,
struct dentry *new_dentry, u32 flags) struct dentry *new_dentry, u32 flags)
{ {
int err; int err;
struct super_block *sb = old_dir->i_sb; struct super_block *sb = dir->i_sb;
struct ntfs_sb_info *sbi = sb->s_fs_info; struct ntfs_sb_info *sbi = sb->s_fs_info;
struct ntfs_inode *old_dir_ni = ntfs_i(old_dir); struct ntfs_inode *dir_ni = ntfs_i(dir);
struct ntfs_inode *new_dir_ni = ntfs_i(new_dir); struct ntfs_inode *new_dir_ni = ntfs_i(new_dir);
struct ntfs_inode *old_ni; struct inode *inode = d_inode(dentry);
struct ATTR_FILE_NAME *old_name, *new_name, *fname; struct ntfs_inode *ni = ntfs_i(inode);
u8 name_type; struct inode *new_inode = d_inode(new_dentry);
bool is_same; struct NTFS_DE *de, *new_de;
struct inode *old_inode, *new_inode; bool is_same, is_bad;
struct NTFS_DE *old_de, *new_de; /*
struct ATTRIB *attr; * de - memory of PATH_MAX bytes:
struct ATTR_LIST_ENTRY *le; * [0-1024) - original name (dentry->d_name)
u16 new_de_key_size; * [1024-2048) - paired to original name, usually DOS variant of dentry->d_name
* [2048-3072) - new name (new_dentry->d_name)
*/
static_assert(SIZEOF_ATTRIBUTE_FILENAME_MAX + SIZEOF_RESIDENT < 1024); static_assert(SIZEOF_ATTRIBUTE_FILENAME_MAX + SIZEOF_RESIDENT < 1024);
static_assert(SIZEOF_ATTRIBUTE_FILENAME_MAX + sizeof(struct NTFS_DE) < static_assert(SIZEOF_ATTRIBUTE_FILENAME_MAX + sizeof(struct NTFS_DE) <
1024); 1024);
@ -276,24 +279,18 @@ static int ntfs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
if (flags & ~RENAME_NOREPLACE) if (flags & ~RENAME_NOREPLACE)
return -EINVAL; return -EINVAL;
old_inode = d_inode(old_dentry); is_same = dentry->d_name.len == new_dentry->d_name.len &&
new_inode = d_inode(new_dentry); !memcmp(dentry->d_name.name, new_dentry->d_name.name,
dentry->d_name.len);
old_ni = ntfs_i(old_inode); if (is_same && dir == new_dir) {
is_same = old_dentry->d_name.len == new_dentry->d_name.len &&
!memcmp(old_dentry->d_name.name, new_dentry->d_name.name,
old_dentry->d_name.len);
if (is_same && old_dir == new_dir) {
/* Nothing to do. */ /* Nothing to do. */
err = 0; return 0;
goto out;
} }
if (ntfs_is_meta_file(sbi, old_inode->i_ino)) { if (ntfs_is_meta_file(sbi, inode->i_ino)) {
err = -EINVAL; /* Should we print an error? */
goto out; return -EINVAL;
} }
if (new_inode) { if (new_inode) {
@ -304,168 +301,61 @@ static int ntfs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
ni_unlock(new_dir_ni); ni_unlock(new_dir_ni);
dput(new_dentry); dput(new_dentry);
if (err) if (err)
goto out; return err;
} }
/* Allocate PATH_MAX bytes. */ /* Allocate PATH_MAX bytes. */
old_de = __getname(); de = __getname();
if (!old_de) { if (!de)
err = -ENOMEM; return -ENOMEM;
goto out;
}
err = fill_name_de(sbi, old_de, &old_dentry->d_name, NULL); /* Translate dentry->d_name into unicode form. */
err = fill_name_de(sbi, de, &dentry->d_name, NULL);
if (err < 0) if (err < 0)
goto out1; goto out;
old_name = (struct ATTR_FILE_NAME *)(old_de + 1);
if (is_same) { if (is_same) {
new_de = old_de; /* Reuse 'de'. */
new_de = de;
} else { } else {
new_de = Add2Ptr(old_de, 1024); /* Translate new_dentry->d_name into unicode form. */
new_de = Add2Ptr(de, 2048);
err = fill_name_de(sbi, new_de, &new_dentry->d_name, NULL); err = fill_name_de(sbi, new_de, &new_dentry->d_name, NULL);
if (err < 0) if (err < 0)
goto out1; goto out;
} }
ni_lock_dir(old_dir_ni); ni_lock_dir(dir_ni);
ni_lock(old_ni); ni_lock(ni);
mi_get_ref(&old_dir_ni->mi, &old_name->home); is_bad = false;
err = ni_rename(dir_ni, new_dir_ni, ni, de, new_de, &is_bad);
/* Get pointer to file_name in MFT. */ if (is_bad) {
fname = ni_fname_name(old_ni, (struct cpu_str *)&old_name->name_len, /* Restore after failed rename failed too. */
&old_name->home, &le); make_bad_inode(inode);
if (!fname) { ntfs_inode_err(inode, "failed to undo rename");
err = -EINVAL; ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
goto out2; } else if (!err) {
} inode->i_ctime = dir->i_ctime = dir->i_mtime =
current_time(dir);
/* Copy fname info from record into new fname. */ mark_inode_dirty(inode);
new_name = (struct ATTR_FILE_NAME *)(new_de + 1); mark_inode_dirty(dir);
memcpy(&new_name->dup, &fname->dup, sizeof(fname->dup)); if (dir != new_dir) {
new_dir->i_mtime = new_dir->i_ctime = dir->i_ctime;
name_type = paired_name(fname->type); mark_inode_dirty(new_dir);
/* Remove first name from directory. */
err = indx_delete_entry(&old_dir_ni->dir, old_dir_ni, old_de + 1,
le16_to_cpu(old_de->key_size), sbi);
if (err)
goto out3;
/* Remove first name from MFT. */
err = ni_remove_attr_le(old_ni, attr_from_name(fname), le);
if (err)
goto out4;
le16_add_cpu(&old_ni->mi.mrec->hard_links, -1);
old_ni->mi.dirty = true;
if (name_type != FILE_NAME_POSIX) {
/* Get paired name. */
fname = ni_fname_type(old_ni, name_type, &le);
if (fname) {
/* Remove second name from directory. */
err = indx_delete_entry(&old_dir_ni->dir, old_dir_ni,
fname, fname_full_size(fname),
sbi);
if (err)
goto out5;
/* Remove second name from MFT. */
err = ni_remove_attr_le(old_ni, attr_from_name(fname),
le);
if (err)
goto out6;
le16_add_cpu(&old_ni->mi.mrec->hard_links, -1);
old_ni->mi.dirty = true;
} }
if (IS_DIRSYNC(dir))
ntfs_sync_inode(dir);
if (IS_DIRSYNC(new_dir))
ntfs_sync_inode(inode);
} }
/* Add new name. */ ni_unlock(ni);
mi_get_ref(&old_ni->mi, &new_de->ref); ni_unlock(dir_ni);
mi_get_ref(&ntfs_i(new_dir)->mi, &new_name->home);
new_de_key_size = le16_to_cpu(new_de->key_size);
/* Insert new name in MFT. */
err = ni_insert_resident(old_ni, new_de_key_size, ATTR_NAME, NULL, 0,
&attr, NULL);
if (err)
goto out7;
attr->res.flags = RESIDENT_FLAG_INDEXED;
memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), new_name, new_de_key_size);
le16_add_cpu(&old_ni->mi.mrec->hard_links, 1);
old_ni->mi.dirty = true;
/* Insert new name in directory. */
err = indx_insert_entry(&new_dir_ni->dir, new_dir_ni, new_de, sbi,
NULL);
if (err)
goto out8;
if (IS_DIRSYNC(new_dir))
err = ntfs_sync_inode(old_inode);
else
mark_inode_dirty(old_inode);
old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir);
if (IS_DIRSYNC(old_dir))
(void)ntfs_sync_inode(old_dir);
else
mark_inode_dirty(old_dir);
if (old_dir != new_dir) {
new_dir->i_mtime = new_dir->i_ctime = old_dir->i_ctime;
mark_inode_dirty(new_dir);
}
if (old_inode) {
old_inode->i_ctime = old_dir->i_ctime;
mark_inode_dirty(old_inode);
}
err = 0;
/* Normal way* */
goto out2;
out8:
/* undo
* ni_insert_resident(old_ni, new_de_key_size, ATTR_NAME, NULL, 0,
* &attr, NULL);
*/
mi_remove_attr(&old_ni->mi, attr);
out7:
/* undo
* ni_remove_attr_le(old_ni, attr_from_name(fname), le);
*/
out6:
/* undo
* indx_delete_entry(&old_dir_ni->dir, old_dir_ni,
* fname, fname_full_size(fname),
* sbi);
*/
out5:
/* undo
* ni_remove_attr_le(old_ni, attr_from_name(fname), le);
*/
out4:
/* undo:
* indx_delete_entry(&old_dir_ni->dir, old_dir_ni, old_de + 1,
* old_de->key_size, NULL);
*/
out3:
out2:
ni_unlock(old_ni);
ni_unlock(old_dir_ni);
out1:
__putname(old_de);
out: out:
__putname(de);
return err; return err;
} }

31
fs/ntfs3/ntfs_fs.h
View file

@ -478,7 +478,7 @@ struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni);
struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni);
void ni_clear(struct ntfs_inode *ni); void ni_clear(struct ntfs_inode *ni);
int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi);
int ni_load_mi(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le, int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le,
struct mft_inode **mi); struct mft_inode **mi);
struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr,
struct ATTR_LIST_ENTRY **entry_o, struct ATTR_LIST_ENTRY **entry_o,
@ -505,15 +505,18 @@ int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type,
struct mft_inode **mi); struct mft_inode **mi);
int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, int ni_insert_resident(struct ntfs_inode *ni, u32 data_size,
enum ATTR_TYPE type, const __le16 *name, u8 name_len, enum ATTR_TYPE type, const __le16 *name, u8 name_len,
struct ATTRIB **new_attr, struct mft_inode **mi); struct ATTRIB **new_attr, struct mft_inode **mi,
int ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, struct ATTR_LIST_ENTRY **le);
struct ATTR_LIST_ENTRY *le); void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr,
struct mft_inode *mi, struct ATTR_LIST_ENTRY *le);
int ni_delete_all(struct ntfs_inode *ni); int ni_delete_all(struct ntfs_inode *ni);
struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni,
const struct cpu_str *uni, const struct cpu_str *uni,
const struct MFT_REF *home, const struct MFT_REF *home,
struct mft_inode **mi,
struct ATTR_LIST_ENTRY **entry); struct ATTR_LIST_ENTRY **entry);
struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type,
struct mft_inode **mi,
struct ATTR_LIST_ENTRY **entry); struct ATTR_LIST_ENTRY **entry);
int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa);
enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr,
@ -528,6 +531,21 @@ int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages,
u32 pages_per_frame); u32 pages_per_frame);
int ni_write_frame(struct ntfs_inode *ni, struct page **pages, int ni_write_frame(struct ntfs_inode *ni, struct page **pages,
u32 pages_per_frame); u32 pages_per_frame);
int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step);
bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
struct NTFS_DE *de, struct NTFS_DE *de2,
int undo_step);
int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
struct NTFS_DE *de);
int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni,
struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de,
bool *is_bad);
bool ni_is_dirty(struct inode *inode);
/* Globals from fslog.c */ /* Globals from fslog.c */
int log_replay(struct ntfs_inode *ni, bool *initialized); int log_replay(struct ntfs_inode *ni, bool *initialized);
@ -631,7 +649,7 @@ int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni,
size_t *off, struct ntfs_fnd *fnd); size_t *off, struct ntfs_fnd *fnd);
int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni,
const struct NTFS_DE *new_de, const void *param, const struct NTFS_DE *new_de, const void *param,
struct ntfs_fnd *fnd); struct ntfs_fnd *fnd, bool undo);
int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni,
const void *key, u32 key_len, const void *param); const void *key, u32 key_len, const void *param);
int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi,
@ -694,7 +712,8 @@ struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type,
const __le16 *name, u8 name_len, u32 asize, const __le16 *name, u8 name_len, u32 asize,
u16 name_off); u16 name_off);
bool mi_remove_attr(struct mft_inode *mi, struct ATTRIB *attr); bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi,
struct ATTRIB *attr);
bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes);
int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr, int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr,
struct runs_tree *run, CLST len); struct runs_tree *run, CLST len);

8
fs/ntfs3/record.c
View file

@ -489,7 +489,8 @@ struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type,
* *
* NOTE: The source attr will point to next attribute. * NOTE: The source attr will point to next attribute.
*/ */
bool mi_remove_attr(struct mft_inode *mi, struct ATTRIB *attr) bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi,
struct ATTRIB *attr)
{ {
struct MFT_REC *rec = mi->mrec; struct MFT_REC *rec = mi->mrec;
u32 aoff = PtrOffset(rec, attr); u32 aoff = PtrOffset(rec, attr);
@ -499,6 +500,11 @@ bool mi_remove_attr(struct mft_inode *mi, struct ATTRIB *attr)
if (aoff + asize > used) if (aoff + asize > used)
return false; return false;
if (ni && is_attr_indexed(attr)) {
le16_add_cpu(&ni->mi.mrec->hard_links, -1);
ni->mi.dirty = true;
}
used -= asize; used -= asize;
memmove(attr, Add2Ptr(attr, asize), used - aoff); memmove(attr, Add2Ptr(attr, asize), used - aoff);
rec->used = cpu_to_le32(used); rec->used = cpu_to_le32(used);

25
fs/ntfs3/xattr.c
View file

@ -395,11 +395,13 @@ static noinline int ntfs_set_ea(struct inode *inode, const char *name,
} }
err = ni_insert_resident(ni, sizeof(struct EA_INFO), err = ni_insert_resident(ni, sizeof(struct EA_INFO),
ATTR_EA_INFO, NULL, 0, NULL, NULL); ATTR_EA_INFO, NULL, 0, NULL, NULL,
NULL);
if (err) if (err)
goto out; goto out;
err = ni_insert_resident(ni, 0, ATTR_EA, NULL, 0, NULL, NULL); err = ni_insert_resident(ni, 0, ATTR_EA, NULL, 0, NULL, NULL,
NULL);
if (err) if (err)
goto out; goto out;
} }
@ -419,9 +421,7 @@ static noinline int ntfs_set_ea(struct inode *inode, const char *name,
if (!size) { if (!size) {
/* Delete xattr, ATTR_EA_INFO */ /* Delete xattr, ATTR_EA_INFO */
err = ni_remove_attr_le(ni, attr, le); ni_remove_attr_le(ni, attr, mi, le);
if (err)
goto out;
} else { } else {
p = resident_data_ex(attr, sizeof(struct EA_INFO)); p = resident_data_ex(attr, sizeof(struct EA_INFO));
if (!p) { if (!p) {
@ -441,9 +441,7 @@ static noinline int ntfs_set_ea(struct inode *inode, const char *name,
if (!size) { if (!size) {
/* Delete xattr, ATTR_EA */ /* Delete xattr, ATTR_EA */
err = ni_remove_attr_le(ni, attr, le); ni_remove_attr_le(ni, attr, mi, le);
if (err)
goto out;
} else if (attr->non_res) { } else if (attr->non_res) {
err = ntfs_sb_write_run(sbi, &ea_run, 0, ea_all, size); err = ntfs_sb_write_run(sbi, &ea_run, 0, ea_all, size);
if (err) if (err)
@ -605,8 +603,7 @@ static noinline int ntfs_set_acl_ex(struct user_namespace *mnt_userns,
goto out; goto out;
} }
err = ntfs_set_ea(inode, name, name_len, value, size, err = ntfs_set_ea(inode, name, name_len, value, size, 0, locked);
acl ? 0 : XATTR_REPLACE, locked);
if (!err) if (!err)
set_cached_acl(inode, type, acl); set_cached_acl(inode, type, acl);
@ -632,8 +629,10 @@ static int ntfs_xattr_get_acl(struct user_namespace *mnt_userns,
struct posix_acl *acl; struct posix_acl *acl;
int err; int err;
if (!(inode->i_sb->s_flags & SB_POSIXACL)) if (!(inode->i_sb->s_flags & SB_POSIXACL)) {
ntfs_inode_warn(inode, "add mount option \"acl\" to use acl");
return -EOPNOTSUPP; return -EOPNOTSUPP;
}
acl = ntfs_get_acl(inode, type); acl = ntfs_get_acl(inode, type);
if (IS_ERR(acl)) if (IS_ERR(acl))
@ -655,8 +654,10 @@ static int ntfs_xattr_set_acl(struct user_namespace *mnt_userns,
struct posix_acl *acl; struct posix_acl *acl;
int err; int err;
if (!(inode->i_sb->s_flags & SB_POSIXACL)) if (!(inode->i_sb->s_flags & SB_POSIXACL)) {
ntfs_inode_warn(inode, "add mount option \"acl\" to use acl");
return -EOPNOTSUPP; return -EOPNOTSUPP;
}
if (!inode_owner_or_capable(mnt_userns, inode)) if (!inode_owner_or_capable(mnt_userns, inode))
return -EPERM; return -EPERM;