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fs: xattr_handler table should be const 

The entries in xattr handler table should be immutable (ie const)
like other operation tables.

Later patches convert common filesystems. Uncoverted filesystems
will still work, but will generate a compiler warning.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
hifive-unleashed-5.1
Stephen Hemminger 2010-05-13 17:53:14 -07:00 committed by Al Viro
parent 18e9e5104f
commit bb4354538e
6 changed files with 15 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
fs/generic_acl.c
View File

@ -201,7 +201,7 @@ generic_check_acl(struct inode *inode, int mask)
return -EAGAIN;
}
struct xattr_handler generic_acl_access_handler = {
const struct xattr_handler generic_acl_access_handler = {
.prefix = POSIX_ACL_XATTR_ACCESS,
.flags = ACL_TYPE_ACCESS,
.list = generic_acl_list,
@ -209,7 +209,7 @@ struct xattr_handler generic_acl_access_handler = {
.set = generic_acl_set,
};
struct xattr_handler generic_acl_default_handler = {
const struct xattr_handler generic_acl_default_handler = {
.prefix = POSIX_ACL_XATTR_DEFAULT,
.flags = ACL_TYPE_DEFAULT,
.list = generic_acl_list,

14
fs/xattr.c
View File

@ -590,10 +590,10 @@ strcmp_prefix(const char *a, const char *a_prefix)
/*
* Find the xattr_handler with the matching prefix.
*/
static struct xattr_handler *
xattr_resolve_name(struct xattr_handler **handlers, const char **name)
static const struct xattr_handler *
xattr_resolve_name(const struct xattr_handler **handlers, const char **name)
{
struct xattr_handler *handler;
const struct xattr_handler *handler;
if (!*name)
return NULL;
@ -614,7 +614,7 @@ xattr_resolve_name(struct xattr_handler **handlers, const char **name)
ssize_t
generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size)
{
struct xattr_handler *handler;
const struct xattr_handler *handler;
handler = xattr_resolve_name(dentry->d_sb->s_xattr, &name);
if (!handler)
@ -629,7 +629,7 @@ generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t s
ssize_t
generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
{
struct xattr_handler *handler, **handlers = dentry->d_sb->s_xattr;
const struct xattr_handler *handler, **handlers = dentry->d_sb->s_xattr;
unsigned int size = 0;
if (!buffer) {
@ -659,7 +659,7 @@ generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
int
generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags)
{
struct xattr_handler *handler;
const struct xattr_handler *handler;
if (size == 0)
value = ""; /* empty EA, do not remove */
@ -676,7 +676,7 @@ generic_setxattr(struct dentry *dentry, const char *name, const void *value, siz
int
generic_removexattr(struct dentry *dentry, const char *name)
{
struct xattr_handler *handler;
const struct xattr_handler *handler;
handler = xattr_resolve_name(dentry->d_sb->s_xattr, &name);
if (!handler)

2
include/linux/fs.h
View File

@ -1336,7 +1336,7 @@ struct super_block {
#ifdef CONFIG_SECURITY
void *s_security;
#endif
struct xattr_handler **s_xattr;
const struct xattr_handler **s_xattr;
struct list_head s_inodes; /* all inodes */
struct hlist_head s_anon; /* anonymous dentries for (nfs) exporting */

4
include/linux/generic_acl.h
View File

@ -5,8 +5,8 @@
struct inode;
extern struct xattr_handler generic_acl_access_handler;
extern struct xattr_handler generic_acl_default_handler;
extern const struct xattr_handler generic_acl_access_handler;
extern const struct xattr_handler generic_acl_default_handler;
int generic_acl_init(struct inode *, struct inode *);
int generic_acl_chmod(struct inode *);

2
include/linux/xattr.h
View File

@ -37,7 +37,7 @@ struct inode;
struct dentry;
struct xattr_handler {
char *prefix;
const char *prefix;
int flags; /* fs private flags passed back to the handlers */
size_t (*list)(struct dentry *dentry, char *list, size_t list_size,
const char *name, size_t name_len, int handler_flags);

4
mm/shmem.c
View File

@ -2071,14 +2071,14 @@ static int shmem_xattr_security_set(struct dentry *dentry, const char *name,
size, flags);
}
static struct xattr_handler shmem_xattr_security_handler = {
static const struct xattr_handler shmem_xattr_security_handler = {
.prefix = XATTR_SECURITY_PREFIX,
.list = shmem_xattr_security_list,
.get = shmem_xattr_security_get,
.set = shmem_xattr_security_set,
};
static struct xattr_handler *shmem_xattr_handlers[] = {
static const struct xattr_handler *shmem_xattr_handlers[] = {
&generic_acl_access_handler,
&generic_acl_default_handler,
&shmem_xattr_security_handler,