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Diffstat (limited to 'fs/f2fs/acl.c')
-rw-r--r--fs/f2fs/acl.c83
1 files changed, 56 insertions, 27 deletions
diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c
index 217b290ae3a5..fa8d81a30fb9 100644
--- a/fs/f2fs/acl.c
+++ b/fs/f2fs/acl.c
@@ -9,6 +9,7 @@
*
* Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de>
*/
+#include <linux/fs_struct.h>
#include <linux/f2fs_fs.h>
#include "f2fs.h"
#include "xattr.h"
@@ -29,6 +30,7 @@ static inline size_t f2fs_acl_size(int count)
static inline int f2fs_acl_count(size_t size)
{
ssize_t s;
+
size -= sizeof(struct f2fs_acl_header);
s = size - 4 * sizeof(struct f2fs_acl_entry_short);
if (s < 0) {
@@ -160,12 +162,12 @@ static void *f2fs_acl_to_disk(struct f2fs_sb_info *sbi,
return (void *)f2fs_acl;
fail:
- kvfree(f2fs_acl);
+ kfree(f2fs_acl);
return ERR_PTR(-EINVAL);
}
static struct posix_acl *__f2fs_get_acl(struct inode *inode, int type,
- struct page *dpage)
+ struct folio *dfolio)
{
int name_index = F2FS_XATTR_INDEX_POSIX_ACL_DEFAULT;
void *value = NULL;
@@ -175,13 +177,13 @@ static struct posix_acl *__f2fs_get_acl(struct inode *inode, int type,
if (type == ACL_TYPE_ACCESS)
name_index = F2FS_XATTR_INDEX_POSIX_ACL_ACCESS;
- retval = f2fs_getxattr(inode, name_index, "", NULL, 0, dpage);
+ retval = f2fs_getxattr(inode, name_index, "", NULL, 0, dfolio);
if (retval > 0) {
value = f2fs_kmalloc(F2FS_I_SB(inode), retval, GFP_F2FS_ZERO);
if (!value)
return ERR_PTR(-ENOMEM);
retval = f2fs_getxattr(inode, name_index, "", value,
- retval, dpage);
+ retval, dfolio);
}
if (retval > 0)
@@ -190,18 +192,43 @@ static struct posix_acl *__f2fs_get_acl(struct inode *inode, int type,
acl = NULL;
else
acl = ERR_PTR(retval);
- kvfree(value);
+ kfree(value);
return acl;
}
-struct posix_acl *f2fs_get_acl(struct inode *inode, int type)
+struct posix_acl *f2fs_get_acl(struct inode *inode, int type, bool rcu)
{
+ if (rcu)
+ return ERR_PTR(-ECHILD);
+
return __f2fs_get_acl(inode, type, NULL);
}
-static int __f2fs_set_acl(struct inode *inode, int type,
- struct posix_acl *acl, struct page *ipage)
+static int f2fs_acl_update_mode(struct mnt_idmap *idmap,
+ struct inode *inode, umode_t *mode_p,
+ struct posix_acl **acl)
+{
+ umode_t mode = inode->i_mode;
+ int error;
+
+ if (is_inode_flag_set(inode, FI_ACL_MODE))
+ mode = F2FS_I(inode)->i_acl_mode;
+
+ error = posix_acl_equiv_mode(*acl, &mode);
+ if (error < 0)
+ return error;
+ if (error == 0)
+ *acl = NULL;
+ if (!in_group_or_capable(idmap, inode, i_gid_into_vfsgid(idmap, inode)))
+ mode &= ~S_ISGID;
+ *mode_p = mode;
+ return 0;
+}
+
+static int __f2fs_set_acl(struct mnt_idmap *idmap,
+ struct inode *inode, int type,
+ struct posix_acl *acl, struct folio *ifolio)
{
int name_index;
void *value = NULL;
@@ -212,8 +239,8 @@ static int __f2fs_set_acl(struct inode *inode, int type,
switch (type) {
case ACL_TYPE_ACCESS:
name_index = F2FS_XATTR_INDEX_POSIX_ACL_ACCESS;
- if (acl && !ipage) {
- error = posix_acl_update_mode(inode, &mode, &acl);
+ if (acl && !ifolio) {
+ error = f2fs_acl_update_mode(idmap, inode, &mode, &acl);
if (error)
return error;
set_acl_inode(inode, mode);
@@ -238,9 +265,9 @@ static int __f2fs_set_acl(struct inode *inode, int type,
}
}
- error = f2fs_setxattr(inode, name_index, "", value, size, ipage, 0);
+ error = f2fs_setxattr(inode, name_index, "", value, size, ifolio, 0);
- kvfree(value);
+ kfree(value);
if (!error)
set_cached_acl(inode, type, acl);
@@ -248,12 +275,15 @@ static int __f2fs_set_acl(struct inode *inode, int type,
return error;
}
-int f2fs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+int f2fs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,
+ struct posix_acl *acl, int type)
{
+ struct inode *inode = d_inode(dentry);
+
if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
return -EIO;
- return __f2fs_set_acl(inode, type, acl, NULL);
+ return __f2fs_set_acl(idmap, inode, type, acl, NULL);
}
/*
@@ -266,9 +296,8 @@ static struct posix_acl *f2fs_acl_clone(const struct posix_acl *acl,
struct posix_acl *clone = NULL;
if (acl) {
- int size = sizeof(struct posix_acl) + acl->a_count *
- sizeof(struct posix_acl_entry);
- clone = kmemdup(acl, size, flags);
+ clone = kmemdup(acl, struct_size(acl, a_entries, acl->a_count),
+ flags);
if (clone)
refcount_set(&clone->a_refcount, 1);
}
@@ -331,7 +360,7 @@ static int f2fs_acl_create_masq(struct posix_acl *acl, umode_t *mode_p)
static int f2fs_acl_create(struct inode *dir, umode_t *mode,
struct posix_acl **default_acl, struct posix_acl **acl,
- struct page *dpage)
+ struct folio *dfolio)
{
struct posix_acl *p;
struct posix_acl *clone;
@@ -343,7 +372,7 @@ static int f2fs_acl_create(struct inode *dir, umode_t *mode,
if (S_ISLNK(*mode) || !IS_POSIXACL(dir))
return 0;
- p = __f2fs_get_acl(dir, ACL_TYPE_DEFAULT, dpage);
+ p = __f2fs_get_acl(dir, ACL_TYPE_DEFAULT, dfolio);
if (!p || p == ERR_PTR(-EOPNOTSUPP)) {
*mode &= ~current_umask();
return 0;
@@ -380,29 +409,29 @@ release_acl:
return ret;
}
-int f2fs_init_acl(struct inode *inode, struct inode *dir, struct page *ipage,
- struct page *dpage)
+int f2fs_init_acl(struct inode *inode, struct inode *dir, struct folio *ifolio,
+ struct folio *dfolio)
{
struct posix_acl *default_acl = NULL, *acl = NULL;
- int error = 0;
+ int error;
- error = f2fs_acl_create(dir, &inode->i_mode, &default_acl, &acl, dpage);
+ error = f2fs_acl_create(dir, &inode->i_mode, &default_acl, &acl, dfolio);
if (error)
return error;
f2fs_mark_inode_dirty_sync(inode, true);
if (default_acl) {
- error = __f2fs_set_acl(inode, ACL_TYPE_DEFAULT, default_acl,
- ipage);
+ error = __f2fs_set_acl(NULL, inode, ACL_TYPE_DEFAULT,
+ default_acl, ifolio);
posix_acl_release(default_acl);
} else {
inode->i_default_acl = NULL;
}
if (acl) {
if (!error)
- error = __f2fs_set_acl(inode, ACL_TYPE_ACCESS, acl,
- ipage);
+ error = __f2fs_set_acl(NULL, inode, ACL_TYPE_ACCESS,
+ acl, ifolio);
posix_acl_release(acl);
} else {
inode->i_acl = NULL;
generated by cgit (git 2.34.1) at 2025-12-25 15:20:19 +0000