Commit 5d2eb548 authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs xattr cleanups from Al Viro.

* 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  f2fs: xattr simplifications
  squashfs: xattr simplifications
  9p: xattr simplifications
  xattr handlers: Pass handler to operations instead of flags
  jffs2: Add missing capability check for listing trusted xattrs
  hfsplus: Remove unused xattr handler list operations
  ubifs: Remove unused security xattr handler
  vfs: Fix the posix_acl_xattr_list return value
  vfs: Check attribute names in posix acl xattr handers
parents 2870f6c4 29608d20
......@@ -10,10 +10,7 @@ obj-$(CONFIG_9P_FS) := 9p.o
vfs_dentry.o \
v9fs.o \
fid.o \
xattr.o \
xattr_user.o \
xattr_trusted.o
xattr.o
9p-$(CONFIG_9P_FSCACHE) += cache.o
9p-$(CONFIG_9P_FS_POSIX_ACL) += acl.o
9p-$(CONFIG_9P_FS_SECURITY) += xattr_security.o
......@@ -212,26 +212,9 @@ int v9fs_acl_mode(struct inode *dir, umode_t *modep,
return 0;
}
static int v9fs_remote_get_acl(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
char *full_name;
switch (type) {
case ACL_TYPE_ACCESS:
full_name = POSIX_ACL_XATTR_ACCESS;
break;
case ACL_TYPE_DEFAULT:
full_name = POSIX_ACL_XATTR_DEFAULT;
break;
default:
BUG();
}
return v9fs_xattr_get(dentry, full_name, buffer, size);
}
static int v9fs_xattr_get_acl(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
static int v9fs_xattr_get_acl(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
void *buffer, size_t size)
{
struct v9fs_session_info *v9ses;
struct posix_acl *acl;
......@@ -245,9 +228,9 @@ static int v9fs_xattr_get_acl(struct dentry *dentry, const char *name,
* We allow set/get/list of acl when access=client is not specified
*/
if ((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT)
return v9fs_remote_get_acl(dentry, name, buffer, size, type);
return v9fs_xattr_get(dentry, handler->prefix, buffer, size);
acl = v9fs_get_cached_acl(d_inode(dentry), type);
acl = v9fs_get_cached_acl(d_inode(dentry), handler->flags);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (acl == NULL)
......@@ -258,29 +241,9 @@ static int v9fs_xattr_get_acl(struct dentry *dentry, const char *name,
return error;
}
static int v9fs_remote_set_acl(struct dentry *dentry, const char *name,
const void *value, size_t size,
int flags, int type)
{
char *full_name;
switch (type) {
case ACL_TYPE_ACCESS:
full_name = POSIX_ACL_XATTR_ACCESS;
break;
case ACL_TYPE_DEFAULT:
full_name = POSIX_ACL_XATTR_DEFAULT;
break;
default:
BUG();
}
return v9fs_xattr_set(dentry, full_name, value, size, flags);
}
static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,
const void *value, size_t size,
int flags, int type)
static int v9fs_xattr_set_acl(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
{
int retval;
struct posix_acl *acl;
......@@ -296,8 +259,8 @@ static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,
* xattr value. We leave it to the server to validate
*/
if ((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT)
return v9fs_remote_set_acl(dentry, name,
value, size, flags, type);
return v9fs_xattr_set(dentry, handler->prefix, value, size,
flags);
if (S_ISLNK(inode->i_mode))
return -EOPNOTSUPP;
......@@ -316,9 +279,8 @@ static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,
} else
acl = NULL;
switch (type) {
switch (handler->flags) {
case ACL_TYPE_ACCESS:
name = POSIX_ACL_XATTR_ACCESS;
if (acl) {
umode_t mode = inode->i_mode;
retval = posix_acl_equiv_mode(acl, &mode);
......@@ -349,7 +311,6 @@ static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,
}
break;
case ACL_TYPE_DEFAULT:
name = POSIX_ACL_XATTR_DEFAULT;
if (!S_ISDIR(inode->i_mode)) {
retval = acl ? -EINVAL : 0;
goto err_out;
......@@ -358,9 +319,9 @@ static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,
default:
BUG();
}
retval = v9fs_xattr_set(dentry, name, value, size, flags);
retval = v9fs_xattr_set(dentry, handler->prefix, value, size, flags);
if (!retval)
set_cached_acl(inode, type, acl);
set_cached_acl(inode, handler->flags, acl);
err_out:
posix_acl_release(acl);
return retval;
......
......@@ -137,6 +137,48 @@ ssize_t v9fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
return v9fs_xattr_get(dentry, NULL, buffer, buffer_size);
}
static int v9fs_xattr_handler_get(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
void *buffer, size_t size)
{
const char *full_name = xattr_full_name(handler, name);
if (strcmp(name, "") == 0)
return -EINVAL;
return v9fs_xattr_get(dentry, full_name, buffer, size);
}
static int v9fs_xattr_handler_set(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
{
const char *full_name = xattr_full_name(handler, name);
if (strcmp(name, "") == 0)
return -EINVAL;
return v9fs_xattr_set(dentry, full_name, value, size, flags);
}
static struct xattr_handler v9fs_xattr_user_handler = {
.prefix = XATTR_USER_PREFIX,
.get = v9fs_xattr_handler_get,
.set = v9fs_xattr_handler_set,
};
static struct xattr_handler v9fs_xattr_trusted_handler = {
.prefix = XATTR_TRUSTED_PREFIX,
.get = v9fs_xattr_handler_get,
.set = v9fs_xattr_handler_set,
};
#ifdef CONFIG_9P_FS_SECURITY
static struct xattr_handler v9fs_xattr_security_handler = {
.prefix = XATTR_SECURITY_PREFIX,
.get = v9fs_xattr_handler_get,
.set = v9fs_xattr_handler_set,
};
#endif
const struct xattr_handler *v9fs_xattr_handlers[] = {
&v9fs_xattr_user_handler,
&v9fs_xattr_trusted_handler,
......
......@@ -19,9 +19,6 @@
#include <net/9p/client.h>
extern const struct xattr_handler *v9fs_xattr_handlers[];
extern struct xattr_handler v9fs_xattr_user_handler;
extern struct xattr_handler v9fs_xattr_trusted_handler;
extern struct xattr_handler v9fs_xattr_security_handler;
extern const struct xattr_handler v9fs_xattr_acl_access_handler;
extern const struct xattr_handler v9fs_xattr_acl_default_handler;
......
/*
* Copyright IBM Corporation, 2010
* Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
*/
#include <linux/module.h>
#include <linux/string.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include "xattr.h"
static int v9fs_xattr_security_get(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
int retval;
char *full_name;
size_t name_len;
size_t prefix_len = XATTR_SECURITY_PREFIX_LEN;
if (name == NULL)
return -EINVAL;
if (strcmp(name, "") == 0)
return -EINVAL;
name_len = strlen(name);
full_name = kmalloc(prefix_len + name_len + 1 , GFP_KERNEL);
if (!full_name)
return -ENOMEM;
memcpy(full_name, XATTR_SECURITY_PREFIX, prefix_len);
memcpy(full_name+prefix_len, name, name_len);
full_name[prefix_len + name_len] = '\0';
retval = v9fs_xattr_get(dentry, full_name, buffer, size);
kfree(full_name);
return retval;
}
static int v9fs_xattr_security_set(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags, int type)
{
int retval;
char *full_name;
size_t name_len;
size_t prefix_len = XATTR_SECURITY_PREFIX_LEN;
if (name == NULL)
return -EINVAL;
if (strcmp(name, "") == 0)
return -EINVAL;
name_len = strlen(name);
full_name = kmalloc(prefix_len + name_len + 1 , GFP_KERNEL);
if (!full_name)
return -ENOMEM;
memcpy(full_name, XATTR_SECURITY_PREFIX, prefix_len);
memcpy(full_name + prefix_len, name, name_len);
full_name[prefix_len + name_len] = '\0';
retval = v9fs_xattr_set(dentry, full_name, value, size, flags);
kfree(full_name);
return retval;
}
struct xattr_handler v9fs_xattr_security_handler = {
.prefix = XATTR_SECURITY_PREFIX,
.get = v9fs_xattr_security_get,
.set = v9fs_xattr_security_set,
};
/*
* Copyright IBM Corporation, 2010
* Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
*/
#include <linux/module.h>
#include <linux/string.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include "xattr.h"
static int v9fs_xattr_trusted_get(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
int retval;
char *full_name;
size_t name_len;
size_t prefix_len = XATTR_TRUSTED_PREFIX_LEN;
if (name == NULL)
return -EINVAL;
if (strcmp(name, "") == 0)
return -EINVAL;
name_len = strlen(name);
full_name = kmalloc(prefix_len + name_len + 1 , GFP_KERNEL);
if (!full_name)
return -ENOMEM;
memcpy(full_name, XATTR_TRUSTED_PREFIX, prefix_len);
memcpy(full_name+prefix_len, name, name_len);
full_name[prefix_len + name_len] = '\0';
retval = v9fs_xattr_get(dentry, full_name, buffer, size);
kfree(full_name);
return retval;
}
static int v9fs_xattr_trusted_set(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags, int type)
{
int retval;
char *full_name;
size_t name_len;
size_t prefix_len = XATTR_TRUSTED_PREFIX_LEN;
if (name == NULL)
return -EINVAL;
if (strcmp(name, "") == 0)
return -EINVAL;
name_len = strlen(name);
full_name = kmalloc(prefix_len + name_len + 1 , GFP_KERNEL);
if (!full_name)
return -ENOMEM;
memcpy(full_name, XATTR_TRUSTED_PREFIX, prefix_len);
memcpy(full_name + prefix_len, name, name_len);
full_name[prefix_len + name_len] = '\0';
retval = v9fs_xattr_set(dentry, full_name, value, size, flags);
kfree(full_name);
return retval;
}
struct xattr_handler v9fs_xattr_trusted_handler = {
.prefix = XATTR_TRUSTED_PREFIX,
.get = v9fs_xattr_trusted_get,
.set = v9fs_xattr_trusted_set,
};
/*
* Copyright IBM Corporation, 2010
* Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
*/
#include <linux/module.h>
#include <linux/string.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include "xattr.h"
static int v9fs_xattr_user_get(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
int retval;
char *full_name;
size_t name_len;
size_t prefix_len = XATTR_USER_PREFIX_LEN;
if (name == NULL)
return -EINVAL;
if (strcmp(name, "") == 0)
return -EINVAL;
name_len = strlen(name);
full_name = kmalloc(prefix_len + name_len + 1 , GFP_KERNEL);
if (!full_name)
return -ENOMEM;
memcpy(full_name, XATTR_USER_PREFIX, prefix_len);
memcpy(full_name+prefix_len, name, name_len);
full_name[prefix_len + name_len] = '\0';
retval = v9fs_xattr_get(dentry, full_name, buffer, size);
kfree(full_name);
return retval;
}
static int v9fs_xattr_user_set(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags, int type)
{
int retval;
char *full_name;
size_t name_len;
size_t prefix_len = XATTR_USER_PREFIX_LEN;
if (name == NULL)
return -EINVAL;
if (strcmp(name, "") == 0)
return -EINVAL;
name_len = strlen(name);
full_name = kmalloc(prefix_len + name_len + 1 , GFP_KERNEL);
if (!full_name)
return -ENOMEM;
memcpy(full_name, XATTR_USER_PREFIX, prefix_len);
memcpy(full_name + prefix_len, name, name_len);
full_name[prefix_len + name_len] = '\0';
retval = v9fs_xattr_set(dentry, full_name, value, size, flags);
kfree(full_name);
return retval;
}
struct xattr_handler v9fs_xattr_user_handler = {
.prefix = XATTR_USER_PREFIX,
.get = v9fs_xattr_user_get,
.set = v9fs_xattr_user_set,
};
......@@ -293,10 +293,9 @@ bad_block: ext2_error(inode->i_sb, "ext2_xattr_list",
ext2_xattr_handler(entry->e_name_index);
if (handler) {
size_t size = handler->list(dentry, buffer, rest,
entry->e_name,
entry->e_name_len,
handler->flags);
size_t size = handler->list(handler, dentry, buffer,
rest, entry->e_name,
entry->e_name_len);
if (buffer) {
if (size > rest) {
error = -ERANGE;
......
......@@ -8,8 +8,9 @@
#include "xattr.h"
static size_t
ext2_xattr_security_list(struct dentry *dentry, char *list, size_t list_size,
const char *name, size_t name_len, int type)
ext2_xattr_security_list(const struct xattr_handler *handler,
struct dentry *dentry, char *list, size_t list_size,
const char *name, size_t name_len)
{
const int prefix_len = XATTR_SECURITY_PREFIX_LEN;
const size_t total_len = prefix_len + name_len + 1;
......@@ -23,8 +24,9 @@ ext2_xattr_security_list(struct dentry *dentry, char *list, size_t list_size,
}
static int
ext2_xattr_security_get(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
ext2_xattr_security_get(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
void *buffer, size_t size)
{
if (strcmp(name, "") == 0)
return -EINVAL;
......@@ -33,8 +35,9 @@ ext2_xattr_security_get(struct dentry *dentry, const char *name,
}
static int
ext2_xattr_security_set(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags, int type)
ext2_xattr_security_set(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
{
if (strcmp(name, "") == 0)
return -EINVAL;
......
......@@ -9,8 +9,9 @@
#include "xattr.h"
static size_t
ext2_xattr_trusted_list(struct dentry *dentry, char *list, size_t list_size,
const char *name, size_t name_len, int type)
ext2_xattr_trusted_list(const struct xattr_handler *handler,
struct dentry *dentry, char *list, size_t list_size,
const char *name, size_t name_len)
{
const int prefix_len = XATTR_TRUSTED_PREFIX_LEN;
const size_t total_len = prefix_len + name_len + 1;
......@@ -27,8 +28,9 @@ ext2_xattr_trusted_list(struct dentry *dentry, char *list, size_t list_size,
}
static int
ext2_xattr_trusted_get(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
ext2_xattr_trusted_get(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
void *buffer, size_t size)
{
if (strcmp(name, "") == 0)
return -EINVAL;
......@@ -37,8 +39,9 @@ ext2_xattr_trusted_get(struct dentry *dentry, const char *name,
}
static int
ext2_xattr_trusted_set(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags, int type)
ext2_xattr_trusted_set(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
{
if (strcmp(name, "") == 0)
return -EINVAL;
......
......@@ -11,8 +11,9 @@
#include "xattr.h"
static size_t
ext2_xattr_user_list(struct dentry *dentry, char *list, size_t list_size,
const char *name, size_t name_len, int type)
ext2_xattr_user_list(const struct xattr_handler *handler,
struct dentry *dentry, char *list, size_t list_size,
const char *name, size_t name_len)
{
const size_t prefix_len = XATTR_USER_PREFIX_LEN;
const size_t total_len = prefix_len + name_len + 1;
......@@ -29,8 +30,9 @@ ext2_xattr_user_list(struct dentry *dentry, char *list, size_t list_size,
}
static int
ext2_xattr_user_get(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
ext2_xattr_user_get(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
void *buffer, size_t size)
{
if (strcmp(name, "") == 0)
return -EINVAL;
......@@ -41,8 +43,9 @@ ext2_xattr_user_get(struct dentry *dentry, const char *name,
}
static int
ext2_xattr_user_set(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags, int type)
ext2_xattr_user_set(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
{
if (strcmp(name, "") == 0)
return -EINVAL;
......
......@@ -405,10 +405,9 @@ ext4_xattr_list_entries(struct dentry *dentry, struct ext4_xattr_entry *entry,
ext4_xattr_handler(entry->e_name_index);
if (handler) {
size_t size = handler->list(dentry, buffer, rest,
entry->e_name,
entry->e_name_len,
handler->flags);
size_t size = handler->list(handler, dentry, buffer,
rest, entry->e_name,
entry->e_name_len);
if (buffer) {
if (size > rest)
return -ERANGE;
......
......@@ -12,8 +12,9 @@
#include "xattr.h"
static size_t
ext4_xattr_security_list(struct dentry *dentry, char *list, size_t list_size,
const char *name, size_t name_len, int type)
ext4_xattr_security_list(const struct xattr_handler *handler,
struct dentry *dentry, char *list, size_t list_size,
const char *name, size_t name_len)
{
const size_t prefix_len = sizeof(XATTR_SECURITY_PREFIX)-1;
const size_t total_len = prefix_len + name_len + 1;
......@@ -28,8 +29,9 @@ ext4_xattr_security_list(struct dentry *dentry, char *list, size_t list_size,
}
static int
ext4_xattr_security_get(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
ext4_xattr_security_get(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
void *buffer, size_t size)
{
if (strcmp(name, "") == 0)
return -EINVAL;
......@@ -38,8 +40,9 @@ ext4_xattr_security_get(struct dentry *dentry, const char *name,
}
static int
ext4_xattr_security_set(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags, int type)
ext4_xattr_security_set(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
{
if (strcmp(name, "") == 0)
return -EINVAL;
......
......@@ -13,8 +13,9 @@
#include "xattr.h"
static size_t
ext4_xattr_trusted_list(struct dentry *dentry, char *list, size_t list_size,
const char *name, size_t name_len, int type)