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-rw-r--r--fs/ecryptfs/crypto.c6
-rw-r--r--fs/ecryptfs/ecryptfs_kernel.h2
-rw-r--r--fs/ecryptfs/inode.c6
-rw-r--r--fs/ecryptfs/main.c26
-rw-r--r--fs/ecryptfs/mmap.c88
5 files changed, 57 insertions, 71 deletions
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
index 2fe0f3af1a08..827278525fd9 100644
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -21,7 +21,7 @@
#include <linux/file.h>
#include <linux/scatterlist.h>
#include <linux/slab.h>
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
#include <linux/kernel.h>
#include <linux/xattr.h>
#include "ecryptfs_kernel.h"
@@ -1606,9 +1606,7 @@ ecryptfs_add_new_key_tfm(struct ecryptfs_key_tfm **key_tfm, char *cipher_name,
goto out;
}
mutex_init(&tmp_tfm->key_tfm_mutex);
- strncpy(tmp_tfm->cipher_name, cipher_name,
- ECRYPTFS_MAX_CIPHER_NAME_SIZE);
- tmp_tfm->cipher_name[ECRYPTFS_MAX_CIPHER_NAME_SIZE] = '\0';
+ strscpy(tmp_tfm->cipher_name, cipher_name);
tmp_tfm->key_size = key_size;
rc = ecryptfs_process_key_cipher(&tmp_tfm->key_tfm,
tmp_tfm->cipher_name,
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index f2ed0c0266cb..c586c5db18b5 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -702,6 +702,6 @@ int ecryptfs_set_f_namelen(long *namelen, long lower_namelen,
int ecryptfs_derive_iv(char *iv, struct ecryptfs_crypt_stat *crypt_stat,
loff_t offset);
-extern const struct xattr_handler *ecryptfs_xattr_handlers[];
+extern const struct xattr_handler * const ecryptfs_xattr_handlers[];
#endif /* #ifndef ECRYPTFS_KERNEL_H */
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 795e9fe2f721..cbdf82f0183f 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -21,7 +21,7 @@
#include <linux/posix_acl.h>
#include <linux/posix_acl_xattr.h>
#include <linux/fileattr.h>
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
#include "ecryptfs_kernel.h"
static int lock_parent(struct dentry *dentry,
@@ -607,6 +607,8 @@ ecryptfs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
target_inode = d_inode(new_dentry);
trap = lock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
+ if (IS_ERR(trap))
+ return PTR_ERR(trap);
dget(lower_new_dentry);
rc = -EINVAL;
if (lower_old_dentry->d_parent != lower_old_dir_dentry)
@@ -1226,7 +1228,7 @@ static const struct xattr_handler ecryptfs_xattr_handler = {
.set = ecryptfs_xattr_set,
};
-const struct xattr_handler *ecryptfs_xattr_handlers[] = {
+const struct xattr_handler * const ecryptfs_xattr_handlers[] = {
&ecryptfs_xattr_handler,
NULL
};
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 2dc927ba067f..577c56302314 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -256,11 +256,8 @@ static int ecryptfs_parse_options(struct ecryptfs_sb_info *sbi, char *options,
substring_t args[MAX_OPT_ARGS];
int token;
char *sig_src;
- char *cipher_name_dst;
char *cipher_name_src;
- char *fn_cipher_name_dst;
char *fn_cipher_name_src;
- char *fnek_dst;
char *fnek_src;
char *cipher_key_bytes_src;
char *fn_cipher_key_bytes_src;
@@ -293,12 +290,8 @@ static int ecryptfs_parse_options(struct ecryptfs_sb_info *sbi, char *options,
case ecryptfs_opt_cipher:
case ecryptfs_opt_ecryptfs_cipher:
cipher_name_src = args[0].from;
- cipher_name_dst =
- mount_crypt_stat->
- global_default_cipher_name;
- strncpy(cipher_name_dst, cipher_name_src,
- ECRYPTFS_MAX_CIPHER_NAME_SIZE);
- cipher_name_dst[ECRYPTFS_MAX_CIPHER_NAME_SIZE] = '\0';
+ strscpy(mount_crypt_stat->global_default_cipher_name,
+ cipher_name_src);
cipher_name_set = 1;
break;
case ecryptfs_opt_ecryptfs_key_bytes:
@@ -326,11 +319,8 @@ static int ecryptfs_parse_options(struct ecryptfs_sb_info *sbi, char *options,
break;
case ecryptfs_opt_fnek_sig:
fnek_src = args[0].from;
- fnek_dst =
- mount_crypt_stat->global_default_fnek_sig;
- strncpy(fnek_dst, fnek_src, ECRYPTFS_SIG_SIZE_HEX);
- mount_crypt_stat->global_default_fnek_sig[
- ECRYPTFS_SIG_SIZE_HEX] = '\0';
+ strscpy(mount_crypt_stat->global_default_fnek_sig,
+ fnek_src);
rc = ecryptfs_add_global_auth_tok(
mount_crypt_stat,
mount_crypt_stat->global_default_fnek_sig,
@@ -348,12 +338,8 @@ static int ecryptfs_parse_options(struct ecryptfs_sb_info *sbi, char *options,
break;
case ecryptfs_opt_fn_cipher:
fn_cipher_name_src = args[0].from;
- fn_cipher_name_dst =
- mount_crypt_stat->global_default_fn_cipher_name;
- strncpy(fn_cipher_name_dst, fn_cipher_name_src,
- ECRYPTFS_MAX_CIPHER_NAME_SIZE);
- mount_crypt_stat->global_default_fn_cipher_name[
- ECRYPTFS_MAX_CIPHER_NAME_SIZE] = '\0';
+ strscpy(mount_crypt_stat->global_default_fn_cipher_name,
+ fn_cipher_name_src);
fn_cipher_name_set = 1;
break;
case ecryptfs_opt_fn_cipher_key_bytes:
diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c
index e2483acc4366..ceda5555971a 100644
--- a/fs/ecryptfs/mmap.c
+++ b/fs/ecryptfs/mmap.c
@@ -19,7 +19,7 @@
#include <linux/scatterlist.h>
#include <linux/slab.h>
#include <linux/xattr.h>
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
#include "ecryptfs_kernel.h"
/*
@@ -234,17 +234,17 @@ out:
/*
* Called with lower inode mutex held.
*/
-static int fill_zeros_to_end_of_page(struct page *page, unsigned int to)
+static int fill_zeros_to_end_of_page(struct folio *folio, unsigned int to)
{
- struct inode *inode = page->mapping->host;
+ struct inode *inode = folio->mapping->host;
int end_byte_in_page;
- if ((i_size_read(inode) / PAGE_SIZE) != page->index)
+ if ((i_size_read(inode) / PAGE_SIZE) != folio->index)
goto out;
end_byte_in_page = i_size_read(inode) % PAGE_SIZE;
if (to > end_byte_in_page)
end_byte_in_page = to;
- zero_user_segment(page, end_byte_in_page, PAGE_SIZE);
+ folio_zero_segment(folio, end_byte_in_page, PAGE_SIZE);
out:
return 0;
}
@@ -255,7 +255,7 @@ out:
* @mapping: The eCryptfs object
* @pos: The file offset at which to start writing
* @len: Length of the write
- * @pagep: Pointer to return the page
+ * @foliop: Pointer to return the folio
* @fsdata: Pointer to return fs data (unused)
*
* This function must zero any hole we create
@@ -265,38 +265,39 @@ out:
static int ecryptfs_write_begin(struct file *file,
struct address_space *mapping,
loff_t pos, unsigned len,
- struct page **pagep, void **fsdata)
+ struct folio **foliop, void **fsdata)
{
pgoff_t index = pos >> PAGE_SHIFT;
- struct page *page;
+ struct folio *folio;
loff_t prev_page_end_size;
int rc = 0;
- page = grab_cache_page_write_begin(mapping, index);
- if (!page)
- return -ENOMEM;
- *pagep = page;
+ folio = __filemap_get_folio(mapping, index, FGP_WRITEBEGIN,
+ mapping_gfp_mask(mapping));
+ if (IS_ERR(folio))
+ return PTR_ERR(folio);
+ *foliop = folio;
prev_page_end_size = ((loff_t)index << PAGE_SHIFT);
- if (!PageUptodate(page)) {
+ if (!folio_test_uptodate(folio)) {
struct ecryptfs_crypt_stat *crypt_stat =
&ecryptfs_inode_to_private(mapping->host)->crypt_stat;
if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
rc = ecryptfs_read_lower_page_segment(
- page, index, 0, PAGE_SIZE, mapping->host);
+ &folio->page, index, 0, PAGE_SIZE, mapping->host);
if (rc) {
printk(KERN_ERR "%s: Error attempting to read "
"lower page segment; rc = [%d]\n",
__func__, rc);
- ClearPageUptodate(page);
+ folio_clear_uptodate(folio);
goto out;
} else
- SetPageUptodate(page);
+ folio_mark_uptodate(folio);
} else if (crypt_stat->flags & ECRYPTFS_VIEW_AS_ENCRYPTED) {
if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR) {
rc = ecryptfs_copy_up_encrypted_with_header(
- page, crypt_stat);
+ &folio->page, crypt_stat);
if (rc) {
printk(KERN_ERR "%s: Error attempting "
"to copy the encrypted content "
@@ -304,46 +305,46 @@ static int ecryptfs_write_begin(struct file *file,
"inserting the metadata from "
"the xattr into the header; rc "
"= [%d]\n", __func__, rc);
- ClearPageUptodate(page);
+ folio_clear_uptodate(folio);
goto out;
}
- SetPageUptodate(page);
+ folio_mark_uptodate(folio);
} else {
rc = ecryptfs_read_lower_page_segment(
- page, index, 0, PAGE_SIZE,
+ &folio->page, index, 0, PAGE_SIZE,
mapping->host);
if (rc) {
printk(KERN_ERR "%s: Error reading "
"page; rc = [%d]\n",
__func__, rc);
- ClearPageUptodate(page);
+ folio_clear_uptodate(folio);
goto out;
}
- SetPageUptodate(page);
+ folio_mark_uptodate(folio);
}
} else {
if (prev_page_end_size
- >= i_size_read(page->mapping->host)) {
- zero_user(page, 0, PAGE_SIZE);
- SetPageUptodate(page);
+ >= i_size_read(mapping->host)) {
+ folio_zero_range(folio, 0, PAGE_SIZE);
+ folio_mark_uptodate(folio);
} else if (len < PAGE_SIZE) {
- rc = ecryptfs_decrypt_page(page);
+ rc = ecryptfs_decrypt_page(&folio->page);
if (rc) {
printk(KERN_ERR "%s: Error decrypting "
"page at index [%ld]; "
"rc = [%d]\n",
- __func__, page->index, rc);
- ClearPageUptodate(page);
+ __func__, folio->index, rc);
+ folio_clear_uptodate(folio);
goto out;
}
- SetPageUptodate(page);
+ folio_mark_uptodate(folio);
}
}
}
/* If creating a page or more of holes, zero them out via truncate.
* Note, this will increase i_size. */
if (index != 0) {
- if (prev_page_end_size > i_size_read(page->mapping->host)) {
+ if (prev_page_end_size > i_size_read(mapping->host)) {
rc = ecryptfs_truncate(file->f_path.dentry,
prev_page_end_size);
if (rc) {
@@ -359,12 +360,11 @@ static int ecryptfs_write_begin(struct file *file,
* of page? Zero it out. */
if ((i_size_read(mapping->host) == prev_page_end_size)
&& (pos != 0))
- zero_user(page, 0, PAGE_SIZE);
+ folio_zero_range(folio, 0, PAGE_SIZE);
out:
if (unlikely(rc)) {
- unlock_page(page);
- put_page(page);
- *pagep = NULL;
+ folio_unlock(folio);
+ folio_put(folio);
}
return rc;
}
@@ -457,13 +457,13 @@ int ecryptfs_write_inode_size_to_metadata(struct inode *ecryptfs_inode)
* @pos: The file position
* @len: The length of the data (unused)
* @copied: The amount of data copied
- * @page: The eCryptfs page
+ * @folio: The eCryptfs folio
* @fsdata: The fsdata (unused)
*/
static int ecryptfs_write_end(struct file *file,
struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
- struct page *page, void *fsdata)
+ struct folio *folio, void *fsdata)
{
pgoff_t index = pos >> PAGE_SHIFT;
unsigned from = pos & (PAGE_SIZE - 1);
@@ -476,8 +476,8 @@ static int ecryptfs_write_end(struct file *file,
ecryptfs_printk(KERN_DEBUG, "Calling fill_zeros_to_end_of_page"
"(page w/ index = [0x%.16lx], to = [%d])\n", index, to);
if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
- rc = ecryptfs_write_lower_page_segment(ecryptfs_inode, page, 0,
- to);
+ rc = ecryptfs_write_lower_page_segment(ecryptfs_inode,
+ &folio->page, 0, to);
if (!rc) {
rc = copied;
fsstack_copy_inode_size(ecryptfs_inode,
@@ -485,21 +485,21 @@ static int ecryptfs_write_end(struct file *file,
}
goto out;
}
- if (!PageUptodate(page)) {
+ if (!folio_test_uptodate(folio)) {
if (copied < PAGE_SIZE) {
rc = 0;
goto out;
}
- SetPageUptodate(page);
+ folio_mark_uptodate(folio);
}
/* Fills in zeros if 'to' goes beyond inode size */
- rc = fill_zeros_to_end_of_page(page, to);
+ rc = fill_zeros_to_end_of_page(folio, to);
if (rc) {
ecryptfs_printk(KERN_WARNING, "Error attempting to fill "
"zeros in page with index = [0x%.16lx]\n", index);
goto out;
}
- rc = ecryptfs_encrypt_page(page);
+ rc = ecryptfs_encrypt_page(&folio->page);
if (rc) {
ecryptfs_printk(KERN_WARNING, "Error encrypting page (upper "
"index [0x%.16lx])\n", index);
@@ -518,8 +518,8 @@ static int ecryptfs_write_end(struct file *file,
else
rc = copied;
out:
- unlock_page(page);
- put_page(page);
+ folio_unlock(folio);
+ folio_put(folio);
return rc;
}
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-29 16:07:56 +0300