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Diffstat (limited to 'fs/ntfs3/frecord.c')
-rw-r--r--fs/ntfs3/frecord.c138
1 files changed, 98 insertions, 40 deletions
diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index 6f47a9c17f89..381a38a06ec2 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -7,6 +7,7 @@
#include <linux/fiemap.h>
#include <linux/fs.h>
+#include <linux/minmax.h>
#include <linux/vmalloc.h>
#include "debug.h"
@@ -468,7 +469,7 @@ ni_ins_new_attr(struct ntfs_inode *ni, struct mft_inode *mi,
&ref, &le);
if (err) {
/* No memory or no space. */
- return NULL;
+ return ERR_PTR(err);
}
le_added = true;
@@ -649,6 +650,7 @@ static int ni_try_remove_attr_list(struct ntfs_inode *ni)
struct mft_inode *mi;
u32 asize, free;
struct MFT_REF ref;
+ struct MFT_REC *mrec;
__le16 id;
if (!ni->attr_list.dirty)
@@ -692,11 +694,17 @@ static int ni_try_remove_attr_list(struct ntfs_inode *ni)
free -= asize;
}
+ /* Make a copy of primary record to restore if error. */
+ mrec = kmemdup(ni->mi.mrec, sbi->record_size, GFP_NOFS);
+ if (!mrec)
+ return 0; /* Not critical. */
+
/* It seems that attribute list can be removed from primary record. */
mi_remove_attr(NULL, &ni->mi, attr_list);
/*
- * Repeat the cycle above and move all attributes to primary record.
+ * Repeat the cycle above and copy all attributes to primary record.
+ * Do not remove original attributes from subrecords!
* It should be success!
*/
le = NULL;
@@ -707,14 +715,14 @@ static int ni_try_remove_attr_list(struct ntfs_inode *ni)
mi = ni_find_mi(ni, ino_get(&le->ref));
if (!mi) {
/* Should never happened, 'cause already checked. */
- goto bad;
+ goto out;
}
attr = mi_find_attr(mi, NULL, le->type, le_name(le),
le->name_len, &le->id);
if (!attr) {
/* Should never happened, 'cause already checked. */
- goto bad;
+ goto out;
}
asize = le32_to_cpu(attr->size);
@@ -724,18 +732,33 @@ static int ni_try_remove_attr_list(struct ntfs_inode *ni)
le16_to_cpu(attr->name_off));
if (!attr_ins) {
/*
- * Internal error.
- * Either no space in primary record (already checked).
- * Either tried to insert another
- * non indexed attribute (logic error).
+ * No space in primary record (already checked).
*/
- goto bad;
+ goto out;
}
/* Copy all except id. */
id = attr_ins->id;
memcpy(attr_ins, attr, asize);
attr_ins->id = id;
+ }
+
+ /*
+ * Repeat the cycle above and remove all attributes from subrecords.
+ */
+ le = NULL;
+ while ((le = al_enumerate(ni, le))) {
+ if (!memcmp(&le->ref, &ref, sizeof(ref)))
+ continue;
+
+ mi = ni_find_mi(ni, ino_get(&le->ref));
+ if (!mi)
+ continue;
+
+ attr = mi_find_attr(mi, NULL, le->type, le_name(le),
+ le->name_len, &le->id);
+ if (!attr)
+ continue;
/* Remove from original record. */
mi_remove_attr(NULL, mi, attr);
@@ -748,11 +771,13 @@ static int ni_try_remove_attr_list(struct ntfs_inode *ni)
ni->attr_list.le = NULL;
ni->attr_list.dirty = false;
+ kfree(mrec);
+ return 0;
+out:
+ /* Restore primary record. */
+ swap(mrec, ni->mi.mrec);
+ kfree(mrec);
return 0;
-bad:
- ntfs_inode_err(&ni->vfs_inode, "Internal error");
- make_bad_inode(&ni->vfs_inode);
- return -EINVAL;
}
/*
@@ -986,6 +1011,8 @@ static int ni_ins_attr_ext(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le,
name_off, svcn, ins_le);
if (!attr)
continue;
+ if (IS_ERR(attr))
+ return PTR_ERR(attr);
if (ins_attr)
*ins_attr = attr;
@@ -1007,8 +1034,15 @@ insert_ext:
attr = ni_ins_new_attr(ni, mi, le, type, name, name_len, asize,
name_off, svcn, ins_le);
- if (!attr)
+ if (!attr) {
+ err = -EINVAL;
+ goto out2;
+ }
+
+ if (IS_ERR(attr)) {
+ err = PTR_ERR(attr);
goto out2;
+ }
if (ins_attr)
*ins_attr = attr;
@@ -1020,10 +1054,9 @@ insert_ext:
out2:
ni_remove_mi(ni, mi);
mi_put(mi);
- err = -EINVAL;
out1:
- ntfs_mark_rec_free(sbi, rno);
+ ntfs_mark_rec_free(sbi, rno, is_mft);
out:
return err;
@@ -1076,6 +1109,11 @@ static int ni_insert_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
if (asize <= free) {
attr = ni_ins_new_attr(ni, &ni->mi, NULL, type, name, name_len,
asize, name_off, svcn, ins_le);
+ if (IS_ERR(attr)) {
+ err = PTR_ERR(attr);
+ goto out;
+ }
+
if (attr) {
if (ins_attr)
*ins_attr = attr;
@@ -1173,6 +1211,11 @@ static int ni_insert_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
goto out;
}
+ if (IS_ERR(attr)) {
+ err = PTR_ERR(attr);
+ goto out;
+ }
+
if (ins_attr)
*ins_attr = attr;
if (ins_mi)
@@ -1218,7 +1261,7 @@ static int ni_expand_mft_list(struct ntfs_inode *ni)
mft_min = mft_new;
mi_min = mi_new;
} else {
- ntfs_mark_rec_free(sbi, mft_new);
+ ntfs_mark_rec_free(sbi, mft_new, true);
mft_new = 0;
ni_remove_mi(ni, mi_new);
}
@@ -1262,7 +1305,7 @@ static int ni_expand_mft_list(struct ntfs_inode *ni)
done = asize - run_size - SIZEOF_NONRESIDENT;
le32_sub_cpu(&ni->mi.mrec->used, done);
- /* Estimate the size of second part: run_buf=NULL. */
+ /* Estimate packed size (run_buf=NULL). */
err = run_pack(run, svcn, evcn + 1 - svcn, NULL, sbi->record_size,
&plen);
if (err < 0)
@@ -1288,10 +1331,16 @@ static int ni_expand_mft_list(struct ntfs_inode *ni)
goto out;
}
+ if (IS_ERR(attr)) {
+ err = PTR_ERR(attr);
+ goto out;
+ }
+
attr->non_res = 1;
attr->name_off = SIZEOF_NONRESIDENT_LE;
attr->flags = 0;
+ /* This function can't fail - cause already checked above. */
run_pack(run, svcn, evcn + 1 - svcn, Add2Ptr(attr, SIZEOF_NONRESIDENT),
run_size, &plen);
@@ -1301,7 +1350,7 @@ static int ni_expand_mft_list(struct ntfs_inode *ni)
out:
if (mft_new) {
- ntfs_mark_rec_free(sbi, mft_new);
+ ntfs_mark_rec_free(sbi, mft_new, true);
ni_remove_mi(ni, mi_new);
}
@@ -1367,8 +1416,6 @@ int ni_expand_list(struct ntfs_inode *ni)
/* Split MFT data as much as possible. */
err = ni_expand_mft_list(ni);
- if (err)
- goto out;
out:
return !err && !done ? -EOPNOTSUPP : err;
@@ -1381,7 +1428,7 @@ int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type,
const __le16 *name, u8 name_len,
const struct runs_tree *run, CLST svcn, CLST len,
__le16 flags, struct ATTRIB **new_attr,
- struct mft_inode **mi)
+ struct mft_inode **mi, struct ATTR_LIST_ENTRY **le)
{
int err;
CLST plen;
@@ -1394,6 +1441,7 @@ int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type,
u32 run_size, asize;
struct ntfs_sb_info *sbi = ni->mi.sbi;
+ /* Estimate packed size (run_buf=NULL). */
err = run_pack(run, svcn, len, NULL, sbi->max_bytes_per_attr - run_off,
&plen);
if (err < 0)
@@ -1414,7 +1462,7 @@ 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,
- &attr, mi, NULL);
+ &attr, mi, le);
if (err)
goto out;
@@ -1423,12 +1471,12 @@ int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type,
attr->name_off = cpu_to_le16(name_off);
attr->flags = flags;
+ /* This function can't fail - cause already checked above. */
run_pack(run, svcn, len, Add2Ptr(attr, run_off), run_size, &plen);
attr->nres.svcn = cpu_to_le64(svcn);
attr->nres.evcn = cpu_to_le64((u64)svcn + len - 1);
- err = 0;
if (new_attr)
*new_attr = attr;
@@ -1560,7 +1608,7 @@ int ni_delete_all(struct ntfs_inode *ni)
mi->dirty = true;
mi_write(mi, 0);
- ntfs_mark_rec_free(sbi, mi->rno);
+ ntfs_mark_rec_free(sbi, mi->rno, false);
ni_remove_mi(ni, mi);
mi_put(mi);
node = next;
@@ -1571,7 +1619,7 @@ int ni_delete_all(struct ntfs_inode *ni)
ni->mi.dirty = true;
err = mi_write(&ni->mi, 0);
- ntfs_mark_rec_free(sbi, ni->mi.rno);
+ ntfs_mark_rec_free(sbi, ni->mi.rno, false);
return err;
}
@@ -1589,7 +1637,8 @@ struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni,
struct ATTRIB *attr = NULL;
struct ATTR_FILE_NAME *fname;
- *le = NULL;
+ if (le)
+ *le = NULL;
/* Enumerate all names. */
next:
@@ -1605,7 +1654,7 @@ next:
goto next;
if (!uni)
- goto next;
+ return fname;
if (uni->len != fname->name_len)
goto next;
@@ -1964,10 +2013,8 @@ int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo,
vcn += clen;
- if (vbo + bytes >= end) {
+ if (vbo + bytes >= end)
bytes = end - vbo;
- flags |= FIEMAP_EXTENT_LAST;
- }
if (vbo + bytes <= valid) {
;
@@ -1977,6 +2024,9 @@ int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo,
/* vbo < valid && valid < vbo + bytes */
u64 dlen = valid - vbo;
+ if (vbo + dlen >= end)
+ flags |= FIEMAP_EXTENT_LAST;
+
err = fiemap_fill_next_extent(fieinfo, vbo, lbo, dlen,
flags);
if (err < 0)
@@ -1995,6 +2045,9 @@ int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo,
flags |= FIEMAP_EXTENT_UNWRITTEN;
}
+ if (vbo + bytes >= end)
+ flags |= FIEMAP_EXTENT_LAST;
+
err = fiemap_fill_next_extent(fieinfo, vbo, lbo, bytes, flags);
if (err < 0)
break;
@@ -2298,10 +2351,8 @@ remove_wof:
out:
kfree(pages);
- if (err) {
- make_bad_inode(inode);
- ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
- }
+ if (err)
+ _ntfs_bad_inode(inode);
return err;
}
@@ -2940,7 +2991,7 @@ bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
}
/*
- * ni_add_name - Add new name in MFT and in directory.
+ * ni_add_name - Add new name into MFT and into directory.
*/
int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
struct NTFS_DE *de)
@@ -2949,13 +3000,20 @@ int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
struct ATTRIB *attr;
struct ATTR_LIST_ENTRY *le;
struct mft_inode *mi;
+ struct ATTR_FILE_NAME *fname;
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. */
+ /* Fill duplicate from any ATTR_NAME. */
+ fname = ni_fname_name(ni, NULL, NULL, NULL, NULL);
+ if (fname)
+ memcpy(&de_name->dup, &fname->dup, sizeof(fname->dup));
+ de_name->dup.fa = ni->std_fa;
+
+ /* Insert new name into MFT. */
err = ni_insert_resident(ni, de_key_size, ATTR_NAME, NULL, 0, &attr,
&mi, &le);
if (err)
@@ -2963,7 +3021,7 @@ int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), de_name, de_key_size);
- /* Insert new name in directory. */
+ /* Insert new name into 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);
@@ -2987,7 +3045,7 @@ int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni,
* 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
+ * In most cases (not all!) adding new name into MFT and into 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.
@@ -3257,7 +3315,7 @@ int ni_write_inode(struct inode *inode, int sync, const char *hint)
err = err2;
if (is_empty) {
- ntfs_mark_rec_free(sbi, mi->rno);
+ ntfs_mark_rec_free(sbi, mi->rno, false);
rb_erase(node, &ni->mi_tree);
mi_put(mi);
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.