mirror of
https://github.com/torvalds/linux.git
synced 2024-11-23 04:31:50 +00:00
79a628d14e
reiserfs_xattr_[sg]et() will fail with -EOPNOTSUPP for V1 inodes anyway, and all reiserfs instances of ->[sg]et() call it and so does ->set_acl(). Checks for name length in the instances had been bogus; they should've been "bugger off if it's _exactly_ the prefix" (as generic would do on its own) and not "bugger off if it's shorter than the prefix" - that can't happen. xattr_full_name() is needed to adjust for the fact that generic instances will skip the prefix in the name passed to ->[gs]et(); reiserfs homegrown analogues didn't. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
116 lines
3.6 KiB
C
116 lines
3.6 KiB
C
#include <linux/reiserfs_xattr.h>
|
|
#include <linux/init.h>
|
|
#include <linux/list.h>
|
|
#include <linux/rwsem.h>
|
|
#include <linux/xattr.h>
|
|
|
|
struct inode;
|
|
struct dentry;
|
|
struct iattr;
|
|
struct super_block;
|
|
|
|
int reiserfs_xattr_register_handlers(void) __init;
|
|
void reiserfs_xattr_unregister_handlers(void);
|
|
int reiserfs_xattr_init(struct super_block *sb, int mount_flags);
|
|
int reiserfs_lookup_privroot(struct super_block *sb);
|
|
int reiserfs_delete_xattrs(struct inode *inode);
|
|
int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs);
|
|
int reiserfs_permission(struct inode *inode, int mask);
|
|
|
|
#ifdef CONFIG_REISERFS_FS_XATTR
|
|
#define has_xattr_dir(inode) (REISERFS_I(inode)->i_flags & i_has_xattr_dir)
|
|
ssize_t reiserfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
|
|
|
|
int reiserfs_xattr_get(struct inode *, const char *, void *, size_t);
|
|
int reiserfs_xattr_set(struct inode *, const char *, const void *, size_t, int);
|
|
int reiserfs_xattr_set_handle(struct reiserfs_transaction_handle *,
|
|
struct inode *, const char *, const void *,
|
|
size_t, int);
|
|
|
|
extern const struct xattr_handler reiserfs_xattr_user_handler;
|
|
extern const struct xattr_handler reiserfs_xattr_trusted_handler;
|
|
extern const struct xattr_handler reiserfs_xattr_security_handler;
|
|
#ifdef CONFIG_REISERFS_FS_SECURITY
|
|
int reiserfs_security_init(struct inode *dir, struct inode *inode,
|
|
const struct qstr *qstr,
|
|
struct reiserfs_security_handle *sec);
|
|
int reiserfs_security_write(struct reiserfs_transaction_handle *th,
|
|
struct inode *inode,
|
|
struct reiserfs_security_handle *sec);
|
|
void reiserfs_security_free(struct reiserfs_security_handle *sec);
|
|
#endif
|
|
|
|
static inline int reiserfs_xattrs_initialized(struct super_block *sb)
|
|
{
|
|
return REISERFS_SB(sb)->priv_root != NULL;
|
|
}
|
|
|
|
#define xattr_size(size) ((size) + sizeof(struct reiserfs_xattr_header))
|
|
static inline loff_t reiserfs_xattr_nblocks(struct inode *inode, loff_t size)
|
|
{
|
|
loff_t ret = 0;
|
|
if (reiserfs_file_data_log(inode)) {
|
|
ret = _ROUND_UP(xattr_size(size), inode->i_sb->s_blocksize);
|
|
ret >>= inode->i_sb->s_blocksize_bits;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* We may have to create up to 3 objects: xattr root, xattr dir, xattr file.
|
|
* Let's try to be smart about it.
|
|
* xattr root: We cache it. If it's not cached, we may need to create it.
|
|
* xattr dir: If anything has been loaded for this inode, we can set a flag
|
|
* saying so.
|
|
* xattr file: Since we don't cache xattrs, we can't tell. We always include
|
|
* blocks for it.
|
|
*
|
|
* However, since root and dir can be created between calls - YOU MUST SAVE
|
|
* THIS VALUE.
|
|
*/
|
|
static inline size_t reiserfs_xattr_jcreate_nblocks(struct inode *inode)
|
|
{
|
|
size_t nblocks = JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
|
|
|
|
if ((REISERFS_I(inode)->i_flags & i_has_xattr_dir) == 0) {
|
|
nblocks += JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
|
|
if (d_really_is_negative(REISERFS_SB(inode->i_sb)->xattr_root))
|
|
nblocks += JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
|
|
}
|
|
|
|
return nblocks;
|
|
}
|
|
|
|
static inline void reiserfs_init_xattr_rwsem(struct inode *inode)
|
|
{
|
|
init_rwsem(&REISERFS_I(inode)->i_xattr_sem);
|
|
}
|
|
|
|
#else
|
|
|
|
#define reiserfs_listxattr NULL
|
|
|
|
static inline void reiserfs_init_xattr_rwsem(struct inode *inode)
|
|
{
|
|
}
|
|
#endif /* CONFIG_REISERFS_FS_XATTR */
|
|
|
|
#ifndef CONFIG_REISERFS_FS_SECURITY
|
|
static inline int reiserfs_security_init(struct inode *dir,
|
|
struct inode *inode,
|
|
const struct qstr *qstr,
|
|
struct reiserfs_security_handle *sec)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline int
|
|
reiserfs_security_write(struct reiserfs_transaction_handle *th,
|
|
struct inode *inode,
|
|
struct reiserfs_security_handle *sec)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void reiserfs_security_free(struct reiserfs_security_handle *sec)
|
|
{}
|
|
#endif
|