#include <linux/posix_acl_xattr.h>
#include <linux/posix_acl.h>
#include <linux/sched.h>
+#include <linux/slab.h>
#include "ctree.h"
#include "btrfs_inode.h"
#include "xattr.h"
-#ifdef CONFIG_FS_POSIX_ACL
-
-static void btrfs_update_cached_acl(struct inode *inode,
- struct posix_acl **p_acl,
- struct posix_acl *acl)
-{
- spin_lock(&inode->i_lock);
- if (*p_acl && *p_acl != BTRFS_ACL_NOT_CACHED)
- posix_acl_release(*p_acl);
- *p_acl = posix_acl_dup(acl);
- spin_unlock(&inode->i_lock);
-}
+#ifdef CONFIG_BTRFS_FS_POSIX_ACL
static struct posix_acl *btrfs_get_acl(struct inode *inode, int type)
{
int size;
const char *name;
char *value = NULL;
- struct posix_acl *acl = NULL, **p_acl;
+ struct posix_acl *acl;
+
+ acl = get_cached_acl(inode, type);
+ if (acl != ACL_NOT_CACHED)
+ return acl;
switch (type) {
case ACL_TYPE_ACCESS:
name = POSIX_ACL_XATTR_ACCESS;
- p_acl = &BTRFS_I(inode)->i_acl;
break;
case ACL_TYPE_DEFAULT:
name = POSIX_ACL_XATTR_DEFAULT;
- p_acl = &BTRFS_I(inode)->i_default_acl;
break;
default:
- return ERR_PTR(-EINVAL);
+ BUG();
}
- spin_lock(&inode->i_lock);
- if (*p_acl != BTRFS_ACL_NOT_CACHED)
- acl = posix_acl_dup(*p_acl);
- spin_unlock(&inode->i_lock);
-
- if (acl)
- return acl;
-
-
size = __btrfs_getxattr(inode, name, "", 0);
if (size > 0) {
value = kzalloc(size, GFP_NOFS);
size = __btrfs_getxattr(inode, name, value, size);
if (size > 0) {
acl = posix_acl_from_xattr(value, size);
- btrfs_update_cached_acl(inode, p_acl, acl);
+ set_cached_acl(inode, type, acl);
}
kfree(value);
- } else if (size == -ENOENT) {
+ } else if (size == -ENOENT || size == -ENODATA || size == 0) {
+ /* FIXME, who returns -ENOENT? I think nobody */
acl = NULL;
- btrfs_update_cached_acl(inode, p_acl, acl);
+ set_cached_acl(inode, type, acl);
+ } else {
+ acl = ERR_PTR(-EIO);
}
return acl;
}
-static int btrfs_xattr_get_acl(struct inode *inode, int type,
- void *value, size_t size)
+static int btrfs_xattr_acl_get(struct dentry *dentry, const char *name,
+ void *value, size_t size, int type)
{
struct posix_acl *acl;
int ret = 0;
- acl = btrfs_get_acl(inode, type);
+ acl = btrfs_get_acl(dentry->d_inode, type);
if (IS_ERR(acl))
return PTR_ERR(acl);
/*
* Needs to be called with fs_mutex held
*/
-static int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+static int btrfs_set_acl(struct btrfs_trans_handle *trans,
+ struct inode *inode, struct posix_acl *acl, int type)
{
int ret, size = 0;
const char *name;
- struct posix_acl **p_acl;
char *value = NULL;
mode_t mode;
switch (type) {
case ACL_TYPE_ACCESS:
mode = inode->i_mode;
- ret = posix_acl_equiv_mode(acl, &mode);
- if (ret < 0)
- return ret;
- ret = 0;
- inode->i_mode = mode;
name = POSIX_ACL_XATTR_ACCESS;
- p_acl = &BTRFS_I(inode)->i_acl;
+ if (acl) {
+ ret = posix_acl_equiv_mode(acl, &mode);
+ if (ret < 0)
+ return ret;
+ inode->i_mode = mode;
+ }
+ ret = 0;
break;
case ACL_TYPE_DEFAULT:
if (!S_ISDIR(inode->i_mode))
return acl ? -EINVAL : 0;
name = POSIX_ACL_XATTR_DEFAULT;
- p_acl = &BTRFS_I(inode)->i_default_acl;
break;
default:
return -EINVAL;
goto out;
}
- ret = __btrfs_setxattr(inode, name, value, size, 0);
-
+ ret = __btrfs_setxattr(trans, inode, name, value, size, 0);
out:
- if (value)
- kfree(value);
+ kfree(value);
if (!ret)
- btrfs_update_cached_acl(inode, p_acl, acl);
+ set_cached_acl(inode, type, acl);
return ret;
}
-static int btrfs_xattr_set_acl(struct inode *inode, int type,
- const void *value, size_t size)
+static int btrfs_xattr_acl_set(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags, int type)
{
- int ret = 0;
+ int ret;
struct posix_acl *acl = NULL;
if (value) {
}
}
- ret = btrfs_set_acl(inode, acl, type);
+ ret = btrfs_set_acl(NULL, dentry->d_inode, acl, type);
posix_acl_release(acl);
return ret;
}
-
-static int btrfs_xattr_acl_access_get(struct inode *inode, const char *name,
- void *value, size_t size)
-{
- return btrfs_xattr_get_acl(inode, ACL_TYPE_ACCESS, value, size);
-}
-
-static int btrfs_xattr_acl_access_set(struct inode *inode, const char *name,
- const void *value, size_t size, int flags)
-{
- return btrfs_xattr_set_acl(inode, ACL_TYPE_ACCESS, value, size);
-}
-
-static int btrfs_xattr_acl_default_get(struct inode *inode, const char *name,
- void *value, size_t size)
-{
- return btrfs_xattr_get_acl(inode, ACL_TYPE_DEFAULT, value, size);
-}
-
-static int btrfs_xattr_acl_default_set(struct inode *inode, const char *name,
- const void *value, size_t size, int flags)
-{
- return btrfs_xattr_set_acl(inode, ACL_TYPE_DEFAULT, value, size);
-}
-
int btrfs_check_acl(struct inode *inode, int mask)
{
struct posix_acl *acl;
* stuff has been fixed to work with that. If the locking stuff changes, we
* need to re-evaluate the acl locking stuff.
*/
-int btrfs_init_acl(struct inode *inode, struct inode *dir)
+int btrfs_init_acl(struct btrfs_trans_handle *trans,
+ struct inode *inode, struct inode *dir)
{
struct posix_acl *acl = NULL;
int ret = 0;
}
if (!acl)
- inode->i_mode &= ~current->fs->umask;
+ inode->i_mode &= ~current_umask();
}
if (IS_POSIXACL(dir) && acl) {
mode_t mode;
if (S_ISDIR(inode->i_mode)) {
- ret = btrfs_set_acl(inode, acl, ACL_TYPE_DEFAULT);
+ ret = btrfs_set_acl(trans, inode, acl,
+ ACL_TYPE_DEFAULT);
if (ret)
goto failed;
}
inode->i_mode = mode;
if (ret > 0) {
/* we need an acl */
- ret = btrfs_set_acl(inode, clone,
+ ret = btrfs_set_acl(trans, inode, clone,
ACL_TYPE_ACCESS);
}
}
+ posix_acl_release(clone);
}
failed:
posix_acl_release(acl);
ret = posix_acl_chmod_masq(clone, inode->i_mode);
if (!ret)
- ret = btrfs_set_acl(inode, clone, ACL_TYPE_ACCESS);
+ ret = btrfs_set_acl(NULL, inode, clone, ACL_TYPE_ACCESS);
posix_acl_release(clone);
struct xattr_handler btrfs_xattr_acl_default_handler = {
.prefix = POSIX_ACL_XATTR_DEFAULT,
- .get = btrfs_xattr_acl_default_get,
- .set = btrfs_xattr_acl_default_set,
+ .flags = ACL_TYPE_DEFAULT,
+ .get = btrfs_xattr_acl_get,
+ .set = btrfs_xattr_acl_set,
};
struct xattr_handler btrfs_xattr_acl_access_handler = {
.prefix = POSIX_ACL_XATTR_ACCESS,
- .get = btrfs_xattr_acl_access_get,
- .set = btrfs_xattr_acl_access_set,
+ .flags = ACL_TYPE_ACCESS,
+ .get = btrfs_xattr_acl_get,
+ .set = btrfs_xattr_acl_set,
};
-#else /* CONFIG_FS_POSIX_ACL */
+#else /* CONFIG_BTRFS_FS_POSIX_ACL */
int btrfs_acl_chmod(struct inode *inode)
{
return 0;
}
-int btrfs_init_acl(struct inode *inode, struct inode *dir)
-{
- return 0;
-}
-
-int btrfs_check_acl(struct inode *inode, int mask)
+int btrfs_init_acl(struct btrfs_trans_handle *trans,
+ struct inode *inode, struct inode *dir)
{
return 0;
}
-#endif /* CONFIG_FS_POSIX_ACL */
+#endif /* CONFIG_BTRFS_FS_POSIX_ACL */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff