xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

hfsplus: integrate POSIX ACLs support into driver

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

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;