/*
- * linux/fs/ext3/acl.c
+ * linux/fs/ext4/acl.c
*
* Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de>
*/
#include <linux/slab.h>
#include <linux/capability.h>
#include <linux/fs.h>
-#include <linux/ext3_jbd.h>
-#include <linux/ext3_fs.h>
+#include <linux/ext4_jbd.h>
+#include <linux/ext4_fs.h>
#include "xattr.h"
#include "acl.h"
* Convert from filesystem to in-memory representation.
*/
static struct posix_acl *
-ext3_acl_from_disk(const void *value, size_t size)
+ext4_acl_from_disk(const void *value, size_t size)
{
const char *end = (char *)value + size;
int n, count;
if (!value)
return NULL;
- if (size < sizeof(ext3_acl_header))
+ if (size < sizeof(ext4_acl_header))
return ERR_PTR(-EINVAL);
- if (((ext3_acl_header *)value)->a_version !=
- cpu_to_le32(EXT3_ACL_VERSION))
+ if (((ext4_acl_header *)value)->a_version !=
+ cpu_to_le32(EXT4_ACL_VERSION))
return ERR_PTR(-EINVAL);
- value = (char *)value + sizeof(ext3_acl_header);
- count = ext3_acl_count(size);
+ value = (char *)value + sizeof(ext4_acl_header);
+ count = ext4_acl_count(size);
if (count < 0)
return ERR_PTR(-EINVAL);
if (count == 0)
if (!acl)
return ERR_PTR(-ENOMEM);
for (n=0; n < count; n++) {
- ext3_acl_entry *entry =
- (ext3_acl_entry *)value;
- if ((char *)value + sizeof(ext3_acl_entry_short) > end)
+ ext4_acl_entry *entry =
+ (ext4_acl_entry *)value;
+ if ((char *)value + sizeof(ext4_acl_entry_short) > end)
goto fail;
acl->a_entries[n].e_tag = le16_to_cpu(entry->e_tag);
acl->a_entries[n].e_perm = le16_to_cpu(entry->e_perm);
case ACL_MASK:
case ACL_OTHER:
value = (char *)value +
- sizeof(ext3_acl_entry_short);
+ sizeof(ext4_acl_entry_short);
acl->a_entries[n].e_id = ACL_UNDEFINED_ID;
break;
case ACL_USER:
case ACL_GROUP:
- value = (char *)value + sizeof(ext3_acl_entry);
+ value = (char *)value + sizeof(ext4_acl_entry);
if ((char *)value > end)
goto fail;
acl->a_entries[n].e_id =
* Convert from in-memory to filesystem representation.
*/
static void *
-ext3_acl_to_disk(const struct posix_acl *acl, size_t *size)
+ext4_acl_to_disk(const struct posix_acl *acl, size_t *size)
{
- ext3_acl_header *ext_acl;
+ ext4_acl_header *ext_acl;
char *e;
size_t n;
- *size = ext3_acl_size(acl->a_count);
- ext_acl = kmalloc(sizeof(ext3_acl_header) + acl->a_count *
- sizeof(ext3_acl_entry), GFP_KERNEL);
+ *size = ext4_acl_size(acl->a_count);
+ ext_acl = kmalloc(sizeof(ext4_acl_header) + acl->a_count *
+ sizeof(ext4_acl_entry), GFP_KERNEL);
if (!ext_acl)
return ERR_PTR(-ENOMEM);
- ext_acl->a_version = cpu_to_le32(EXT3_ACL_VERSION);
- e = (char *)ext_acl + sizeof(ext3_acl_header);
+ ext_acl->a_version = cpu_to_le32(EXT4_ACL_VERSION);
+ e = (char *)ext_acl + sizeof(ext4_acl_header);
for (n=0; n < acl->a_count; n++) {
- ext3_acl_entry *entry = (ext3_acl_entry *)e;
+ ext4_acl_entry *entry = (ext4_acl_entry *)e;
entry->e_tag = cpu_to_le16(acl->a_entries[n].e_tag);
entry->e_perm = cpu_to_le16(acl->a_entries[n].e_perm);
switch(acl->a_entries[n].e_tag) {
case ACL_GROUP:
entry->e_id =
cpu_to_le32(acl->a_entries[n].e_id);
- e += sizeof(ext3_acl_entry);
+ e += sizeof(ext4_acl_entry);
break;
case ACL_USER_OBJ:
case ACL_GROUP_OBJ:
case ACL_MASK:
case ACL_OTHER:
- e += sizeof(ext3_acl_entry_short);
+ e += sizeof(ext4_acl_entry_short);
break;
default:
}
static inline struct posix_acl *
-ext3_iget_acl(struct inode *inode, struct posix_acl **i_acl)
+ext4_iget_acl(struct inode *inode, struct posix_acl **i_acl)
{
- struct posix_acl *acl = EXT3_ACL_NOT_CACHED;
+ struct posix_acl *acl = EXT4_ACL_NOT_CACHED;
spin_lock(&inode->i_lock);
- if (*i_acl != EXT3_ACL_NOT_CACHED)
+ if (*i_acl != EXT4_ACL_NOT_CACHED)
acl = posix_acl_dup(*i_acl);
spin_unlock(&inode->i_lock);
}
static inline void
-ext3_iset_acl(struct inode *inode, struct posix_acl **i_acl,
+ext4_iset_acl(struct inode *inode, struct posix_acl **i_acl,
struct posix_acl *acl)
{
spin_lock(&inode->i_lock);
- if (*i_acl != EXT3_ACL_NOT_CACHED)
+ if (*i_acl != EXT4_ACL_NOT_CACHED)
posix_acl_release(*i_acl);
*i_acl = posix_acl_dup(acl);
spin_unlock(&inode->i_lock);
* inode->i_mutex: don't care
*/
static struct posix_acl *
-ext3_get_acl(struct inode *inode, int type)
+ext4_get_acl(struct inode *inode, int type)
{
- struct ext3_inode_info *ei = EXT3_I(inode);
+ struct ext4_inode_info *ei = EXT4_I(inode);
int name_index;
char *value = NULL;
struct posix_acl *acl;
switch(type) {
case ACL_TYPE_ACCESS:
- acl = ext3_iget_acl(inode, &ei->i_acl);
- if (acl != EXT3_ACL_NOT_CACHED)
+ acl = ext4_iget_acl(inode, &ei->i_acl);
+ if (acl != EXT4_ACL_NOT_CACHED)
return acl;
- name_index = EXT3_XATTR_INDEX_POSIX_ACL_ACCESS;
+ name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS;
break;
case ACL_TYPE_DEFAULT:
- acl = ext3_iget_acl(inode, &ei->i_default_acl);
- if (acl != EXT3_ACL_NOT_CACHED)
+ acl = ext4_iget_acl(inode, &ei->i_default_acl);
+ if (acl != EXT4_ACL_NOT_CACHED)
return acl;
- name_index = EXT3_XATTR_INDEX_POSIX_ACL_DEFAULT;
+ name_index = EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT;
break;
default:
return ERR_PTR(-EINVAL);
}
- retval = ext3_xattr_get(inode, name_index, "", NULL, 0);
+ retval = ext4_xattr_get(inode, name_index, "", NULL, 0);
if (retval > 0) {
value = kmalloc(retval, GFP_KERNEL);
if (!value)
return ERR_PTR(-ENOMEM);
- retval = ext3_xattr_get(inode, name_index, "", value, retval);
+ retval = ext4_xattr_get(inode, name_index, "", value, retval);
}
if (retval > 0)
- acl = ext3_acl_from_disk(value, retval);
+ acl = ext4_acl_from_disk(value, retval);
else if (retval == -ENODATA || retval == -ENOSYS)
acl = NULL;
else
if (!IS_ERR(acl)) {
switch(type) {
case ACL_TYPE_ACCESS:
- ext3_iset_acl(inode, &ei->i_acl, acl);
+ ext4_iset_acl(inode, &ei->i_acl, acl);
break;
case ACL_TYPE_DEFAULT:
- ext3_iset_acl(inode, &ei->i_default_acl, acl);
+ ext4_iset_acl(inode, &ei->i_default_acl, acl);
break;
}
}
/*
* Set the access or default ACL of an inode.
*
- * inode->i_mutex: down unless called from ext3_new_inode
+ * inode->i_mutex: down unless called from ext4_new_inode
*/
static int
-ext3_set_acl(handle_t *handle, struct inode *inode, int type,
+ext4_set_acl(handle_t *handle, struct inode *inode, int type,
struct posix_acl *acl)
{
- struct ext3_inode_info *ei = EXT3_I(inode);
+ struct ext4_inode_info *ei = EXT4_I(inode);
int name_index;
void *value = NULL;
size_t size = 0;
switch(type) {
case ACL_TYPE_ACCESS:
- name_index = EXT3_XATTR_INDEX_POSIX_ACL_ACCESS;
+ name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS;
if (acl) {
mode_t mode = inode->i_mode;
error = posix_acl_equiv_mode(acl, &mode);
return error;
else {
inode->i_mode = mode;
- ext3_mark_inode_dirty(handle, inode);
+ ext4_mark_inode_dirty(handle, inode);
if (error == 0)
acl = NULL;
}
break;
case ACL_TYPE_DEFAULT:
- name_index = EXT3_XATTR_INDEX_POSIX_ACL_DEFAULT;
+ name_index = EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT;
if (!S_ISDIR(inode->i_mode))
return acl ? -EACCES : 0;
break;
return -EINVAL;
}
if (acl) {
- value = ext3_acl_to_disk(acl, &size);
+ value = ext4_acl_to_disk(acl, &size);
if (IS_ERR(value))
return (int)PTR_ERR(value);
}
- error = ext3_xattr_set_handle(handle, inode, name_index, "",
+ error = ext4_xattr_set_handle(handle, inode, name_index, "",
value, size, 0);
kfree(value);
if (!error) {
switch(type) {
case ACL_TYPE_ACCESS:
- ext3_iset_acl(inode, &ei->i_acl, acl);
+ ext4_iset_acl(inode, &ei->i_acl, acl);
break;
case ACL_TYPE_DEFAULT:
- ext3_iset_acl(inode, &ei->i_default_acl, acl);
+ ext4_iset_acl(inode, &ei->i_default_acl, acl);
break;
}
}
}
static int
-ext3_check_acl(struct inode *inode, int mask)
+ext4_check_acl(struct inode *inode, int mask)
{
- struct posix_acl *acl = ext3_get_acl(inode, ACL_TYPE_ACCESS);
+ struct posix_acl *acl = ext4_get_acl(inode, ACL_TYPE_ACCESS);
if (IS_ERR(acl))
return PTR_ERR(acl);
}
int
-ext3_permission(struct inode *inode, int mask, struct nameidata *nd)
+ext4_permission(struct inode *inode, int mask, struct nameidata *nd)
{
- return generic_permission(inode, mask, ext3_check_acl);
+ return generic_permission(inode, mask, ext4_check_acl);
}
/*
- * Initialize the ACLs of a new inode. Called from ext3_new_inode.
+ * Initialize the ACLs of a new inode. Called from ext4_new_inode.
*
* dir->i_mutex: down
* inode->i_mutex: up (access to inode is still exclusive)
*/
int
-ext3_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
+ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
{
struct posix_acl *acl = NULL;
int error = 0;
if (!S_ISLNK(inode->i_mode)) {
if (test_opt(dir->i_sb, POSIX_ACL)) {
- acl = ext3_get_acl(dir, ACL_TYPE_DEFAULT);
+ acl = ext4_get_acl(dir, ACL_TYPE_DEFAULT);
if (IS_ERR(acl))
return PTR_ERR(acl);
}
mode_t mode;
if (S_ISDIR(inode->i_mode)) {
- error = ext3_set_acl(handle, inode,
+ error = ext4_set_acl(handle, inode,
ACL_TYPE_DEFAULT, acl);
if (error)
goto cleanup;
inode->i_mode = mode;
if (error > 0) {
/* This is an extended ACL */
- error = ext3_set_acl(handle, inode,
+ error = ext4_set_acl(handle, inode,
ACL_TYPE_ACCESS, clone);
}
}
* inode->i_mutex: down
*/
int
-ext3_acl_chmod(struct inode *inode)
+ext4_acl_chmod(struct inode *inode)
{
struct posix_acl *acl, *clone;
int error;
return -EOPNOTSUPP;
if (!test_opt(inode->i_sb, POSIX_ACL))
return 0;
- acl = ext3_get_acl(inode, ACL_TYPE_ACCESS);
+ acl = ext4_get_acl(inode, ACL_TYPE_ACCESS);
if (IS_ERR(acl) || !acl)
return PTR_ERR(acl);
clone = posix_acl_clone(acl, GFP_KERNEL);
int retries = 0;
retry:
- handle = ext3_journal_start(inode,
- EXT3_DATA_TRANS_BLOCKS(inode->i_sb));
+ handle = ext4_journal_start(inode,
+ EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
if (IS_ERR(handle)) {
error = PTR_ERR(handle);
- ext3_std_error(inode->i_sb, error);
+ ext4_std_error(inode->i_sb, error);
goto out;
}
- error = ext3_set_acl(handle, inode, ACL_TYPE_ACCESS, clone);
- ext3_journal_stop(handle);
+ error = ext4_set_acl(handle, inode, ACL_TYPE_ACCESS, clone);
+ ext4_journal_stop(handle);
if (error == -ENOSPC &&
- ext3_should_retry_alloc(inode->i_sb, &retries))
+ ext4_should_retry_alloc(inode->i_sb, &retries))
goto retry;
}
out:
* Extended attribute handlers
*/
static size_t
-ext3_xattr_list_acl_access(struct inode *inode, char *list, size_t list_len,
+ext4_xattr_list_acl_access(struct inode *inode, char *list, size_t list_len,
const char *name, size_t name_len)
{
const size_t size = sizeof(POSIX_ACL_XATTR_ACCESS);
}
static size_t
-ext3_xattr_list_acl_default(struct inode *inode, char *list, size_t list_len,
+ext4_xattr_list_acl_default(struct inode *inode, char *list, size_t list_len,
const char *name, size_t name_len)
{
const size_t size = sizeof(POSIX_ACL_XATTR_DEFAULT);
}
static int
-ext3_xattr_get_acl(struct inode *inode, int type, void *buffer, size_t size)
+ext4_xattr_get_acl(struct inode *inode, int type, void *buffer, size_t size)
{
struct posix_acl *acl;
int error;
if (!test_opt(inode->i_sb, POSIX_ACL))
return -EOPNOTSUPP;
- acl = ext3_get_acl(inode, type);
+ acl = ext4_get_acl(inode, type);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (acl == NULL)
}
static int
-ext3_xattr_get_acl_access(struct inode *inode, const char *name,
+ext4_xattr_get_acl_access(struct inode *inode, const char *name,
void *buffer, size_t size)
{
if (strcmp(name, "") != 0)
return -EINVAL;
- return ext3_xattr_get_acl(inode, ACL_TYPE_ACCESS, buffer, size);
+ return ext4_xattr_get_acl(inode, ACL_TYPE_ACCESS, buffer, size);
}
static int
-ext3_xattr_get_acl_default(struct inode *inode, const char *name,
+ext4_xattr_get_acl_default(struct inode *inode, const char *name,
void *buffer, size_t size)
{
if (strcmp(name, "") != 0)
return -EINVAL;
- return ext3_xattr_get_acl(inode, ACL_TYPE_DEFAULT, buffer, size);
+ return ext4_xattr_get_acl(inode, ACL_TYPE_DEFAULT, buffer, size);
}
static int
-ext3_xattr_set_acl(struct inode *inode, int type, const void *value,
+ext4_xattr_set_acl(struct inode *inode, int type, const void *value,
size_t size)
{
handle_t *handle;
acl = NULL;
retry:
- handle = ext3_journal_start(inode, EXT3_DATA_TRANS_BLOCKS(inode->i_sb));
+ handle = ext4_journal_start(inode, EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
- error = ext3_set_acl(handle, inode, type, acl);
- ext3_journal_stop(handle);
- if (error == -ENOSPC && ext3_should_retry_alloc(inode->i_sb, &retries))
+ error = ext4_set_acl(handle, inode, type, acl);
+ ext4_journal_stop(handle);
+ if (error == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
goto retry;
release_and_out:
}
static int
-ext3_xattr_set_acl_access(struct inode *inode, const char *name,
+ext4_xattr_set_acl_access(struct inode *inode, const char *name,
const void *value, size_t size, int flags)
{
if (strcmp(name, "") != 0)
return -EINVAL;
- return ext3_xattr_set_acl(inode, ACL_TYPE_ACCESS, value, size);
+ return ext4_xattr_set_acl(inode, ACL_TYPE_ACCESS, value, size);
}
static int
-ext3_xattr_set_acl_default(struct inode *inode, const char *name,
+ext4_xattr_set_acl_default(struct inode *inode, const char *name,
const void *value, size_t size, int flags)
{
if (strcmp(name, "") != 0)
return -EINVAL;
- return ext3_xattr_set_acl(inode, ACL_TYPE_DEFAULT, value, size);
+ return ext4_xattr_set_acl(inode, ACL_TYPE_DEFAULT, value, size);
}
-struct xattr_handler ext3_xattr_acl_access_handler = {
+struct xattr_handler ext4_xattr_acl_access_handler = {
.prefix = POSIX_ACL_XATTR_ACCESS,
- .list = ext3_xattr_list_acl_access,
- .get = ext3_xattr_get_acl_access,
- .set = ext3_xattr_set_acl_access,
+ .list = ext4_xattr_list_acl_access,
+ .get = ext4_xattr_get_acl_access,
+ .set = ext4_xattr_set_acl_access,
};
-struct xattr_handler ext3_xattr_acl_default_handler = {
+struct xattr_handler ext4_xattr_acl_default_handler = {
.prefix = POSIX_ACL_XATTR_DEFAULT,
- .list = ext3_xattr_list_acl_default,
- .get = ext3_xattr_get_acl_default,
- .set = ext3_xattr_set_acl_default,
+ .list = ext4_xattr_list_acl_default,
+ .get = ext4_xattr_get_acl_default,
+ .set = ext4_xattr_set_acl_default,
};
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blobdiff