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hfsplus: integrate POSIX ACLs support into driver 

Integrate implemented POSIX ACLs support into hfsplus driver.

Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Hin-Tak Leung <htl10@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Vyacheslav Dubeyko 2013-09-11 14:24:30 -07:00 committed by Linus Torvalds
parent eef80d4ad1
commit b4c1107cc9
6 changed files with 99 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/hfsplus/Makefile
View File

@ -7,3 +7,5 @@ obj-$(CONFIG_HFSPLUS_FS) += hfsplus.o
hfsplus-objs := super.o options.o inode.o ioctl.o extents.o catalog.o dir.o btree.o \
bnode.o brec.o bfind.o tables.o unicode.o wrapper.o bitmap.o part_tbl.o \
attributes.o xattr.o xattr_user.o xattr_security.o xattr_trusted.o
hfsplus-$(CONFIG_HFSPLUS_FS_POSIX_ACL) += posix_acl.o

4
fs/hfsplus/dir.c
View File

@ -16,6 +16,7 @@
#include "hfsplus_fs.h"
#include "hfsplus_raw.h"
#include "xattr.h"
#include "acl.h"
static inline void hfsplus_instantiate(struct dentry *dentry,
struct inode *inode, u32 cnid)
@ -529,6 +530,9 @@ const struct inode_operations hfsplus_dir_inode_operations = {
.getxattr = generic_getxattr,
.listxattr = hfsplus_listxattr,
.removexattr = hfsplus_removexattr,
#ifdef CONFIG_HFSPLUS_FS_POSIX_ACL
.get_acl = hfsplus_get_posix_acl,
#endif
};
const struct file_operations hfsplus_dir_operations = {

11
fs/hfsplus/inode.c
View File

@ -19,6 +19,7 @@
#include "hfsplus_fs.h"
#include "hfsplus_raw.h"
#include "xattr.h"
#include "acl.h"
static int hfsplus_readpage(struct file *file, struct page *page)
{
@ -316,6 +317,13 @@ static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
setattr_copy(inode, attr);
mark_inode_dirty(inode);
if (attr->ia_valid & ATTR_MODE) {
error = hfsplus_posix_acl_chmod(inode);
if (unlikely(error))
return error;
}
return 0;
}
@ -383,6 +391,9 @@ static const struct inode_operations hfsplus_file_inode_operations = {
.getxattr = generic_getxattr,
.listxattr = hfsplus_listxattr,
.removexattr = hfsplus_removexattr,
#ifdef CONFIG_HFSPLUS_FS_POSIX_ACL
.get_acl = hfsplus_get_posix_acl,
#endif
};
static const struct file_operations hfsplus_file_operations = {

62
fs/hfsplus/xattr.c
View File

@ -8,11 +8,16 @@
#include "hfsplus_fs.h"
#include "xattr.h"
#include "acl.h"
const struct xattr_handler *hfsplus_xattr_handlers[] = {
&hfsplus_xattr_osx_handler,
&hfsplus_xattr_user_handler,
&hfsplus_xattr_trusted_handler,
#ifdef CONFIG_HFSPLUS_FS_POSIX_ACL
&hfsplus_xattr_acl_access_handler,
&hfsplus_xattr_acl_default_handler,
#endif
&hfsplus_xattr_security_handler,
NULL
};
@ -46,11 +51,58 @@ static inline int is_known_namespace(const char *name)
return true;
}
static int can_set_system_xattr(struct inode *inode, const char *name,
const void *value, size_t size)
{
#ifdef CONFIG_HFSPLUS_FS_POSIX_ACL
struct posix_acl *acl;
int err;
if (!inode_owner_or_capable(inode))
return -EPERM;
/*
* POSIX_ACL_XATTR_ACCESS is tied to i_mode
*/
if (strcmp(name, POSIX_ACL_XATTR_ACCESS) == 0) {
acl = posix_acl_from_xattr(&init_user_ns, value, size);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (acl) {
err = posix_acl_equiv_mode(acl, &inode->i_mode);
posix_acl_release(acl);
if (err < 0)
return err;
mark_inode_dirty(inode);
}
/*
* We're changing the ACL. Get rid of the cached one
*/
forget_cached_acl(inode, ACL_TYPE_ACCESS);
return 0;
} else if (strcmp(name, POSIX_ACL_XATTR_DEFAULT) == 0) {
acl = posix_acl_from_xattr(&init_user_ns, value, size);
if (IS_ERR(acl))
return PTR_ERR(acl);
posix_acl_release(acl);
/*
* We're changing the default ACL. Get rid of the cached one
*/
forget_cached_acl(inode, ACL_TYPE_DEFAULT);
return 0;
}
#endif /* CONFIG_HFSPLUS_FS_POSIX_ACL */
return -EOPNOTSUPP;
}
static int can_set_xattr(struct inode *inode, const char *name,
const void *value, size_t value_len)
{
if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN))
return -EOPNOTSUPP; /* TODO: implement ACL support */
return can_set_system_xattr(inode, name, value, value_len);
if (!strncmp(name, XATTR_MAC_OSX_PREFIX, XATTR_MAC_OSX_PREFIX_LEN)) {
/*
@ -253,11 +305,10 @@ static int copy_name(char *buffer, const char *xattr_name, int name_len)
return len;
}
static ssize_t hfsplus_getxattr_finder_info(struct dentry *dentry,
static ssize_t hfsplus_getxattr_finder_info(struct inode *inode,
void *value, size_t size)
{
ssize_t res = 0;
struct inode *inode = dentry->d_inode;
struct hfs_find_data fd;
u16 entry_type;
u16 folder_rec_len = sizeof(struct DInfo) + sizeof(struct DXInfo);
@ -304,10 +355,9 @@ end_getxattr_finder_info:
return res;
}
ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
ssize_t __hfsplus_getxattr(struct inode *inode, const char *name,
void *value, size_t size)
{
struct inode *inode = dentry->d_inode;
struct hfs_find_data fd;
hfsplus_attr_entry *entry;
__be32 xattr_record_type;
@ -333,7 +383,7 @@ ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
}
if (!strcmp_xattr_finder_info(name))
return hfsplus_getxattr_finder_info(dentry, value, size);
return hfsplus_getxattr_finder_info(inode, value, size);
if (!HFSPLUS_SB(inode->i_sb)->attr_tree)
return -EOPNOTSUPP;

33
fs/hfsplus/xattr.h
View File

@ -14,8 +14,8 @@
extern const struct xattr_handler hfsplus_xattr_osx_handler;
extern const struct xattr_handler hfsplus_xattr_user_handler;
extern const struct xattr_handler hfsplus_xattr_trusted_handler;
/*extern const struct xattr_handler hfsplus_xattr_acl_access_handler;*/
/*extern const struct xattr_handler hfsplus_xattr_acl_default_handler;*/
extern const struct xattr_handler hfsplus_xattr_acl_access_handler;
extern const struct xattr_handler hfsplus_xattr_acl_default_handler;
extern const struct xattr_handler hfsplus_xattr_security_handler;
extern const struct xattr_handler *hfsplus_xattr_handlers[];
@ -29,9 +29,17 @@ static inline int hfsplus_setxattr(struct dentry *dentry, const char *name,
return __hfsplus_setxattr(dentry->d_inode, name, value, size, flags);
}
ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
ssize_t __hfsplus_getxattr(struct inode *inode, const char *name,
void *value, size_t size);
static inline ssize_t hfsplus_getxattr(struct dentry *dentry,
const char *name,
void *value,
size_t size)
{
return __hfsplus_getxattr(dentry->d_inode, name, value, size);
}
ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size);
int hfsplus_removexattr(struct dentry *dentry, const char *name);
@ -39,22 +47,7 @@ int hfsplus_removexattr(struct dentry *dentry, const char *name);
int hfsplus_init_security(struct inode *inode, struct inode *dir,
const struct qstr *qstr);
static inline int hfsplus_init_acl(struct inode *inode, struct inode *dir)
{
/*TODO: implement*/
return 0;
}
static inline int hfsplus_init_inode_security(struct inode *inode,
struct inode *dir,
const struct qstr *qstr)
{
int err;
err = hfsplus_init_acl(inode, dir);
if (!err)
err = hfsplus_init_security(inode, dir, qstr);
return err;
}
int hfsplus_init_inode_security(struct inode *inode, struct inode *dir,
const struct qstr *qstr);
#endif

13
fs/hfsplus/xattr_security.c
View File

@ -9,6 +9,7 @@
#include <linux/security.h>
#include "hfsplus_fs.h"
#include "xattr.h"
#include "acl.h"
static int hfsplus_security_getxattr(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
@ -96,6 +97,18 @@ int hfsplus_init_security(struct inode *inode, struct inode *dir,
&hfsplus_initxattrs, NULL);
}
int hfsplus_init_inode_security(struct inode *inode,
struct inode *dir,
const struct qstr *qstr)
{
int err;
err = hfsplus_init_posix_acl(inode, dir);
if (!err)
err = hfsplus_init_security(inode, dir, qstr);
return err;
}
const struct xattr_handler hfsplus_xattr_security_handler = {
.prefix = XATTR_SECURITY_PREFIX,
.list = hfsplus_security_listxattr,