b4c1107cc9
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>
117 lines
2.9 KiB
C
117 lines
2.9 KiB
C
/*
|
|
* linux/fs/hfsplus/xattr_trusted.c
|
|
*
|
|
* Vyacheslav Dubeyko <slava@dubeyko.com>
|
|
*
|
|
* Handler for storing security labels as extended attributes.
|
|
*/
|
|
|
|
#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)
|
|
{
|
|
char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0};
|
|
size_t len = strlen(name);
|
|
|
|
if (!strcmp(name, ""))
|
|
return -EINVAL;
|
|
|
|
if (len + XATTR_SECURITY_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN)
|
|
return -EOPNOTSUPP;
|
|
|
|
strcpy(xattr_name, XATTR_SECURITY_PREFIX);
|
|
strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name);
|
|
|
|
return hfsplus_getxattr(dentry, xattr_name, buffer, size);
|
|
}
|
|
|
|
static int hfsplus_security_setxattr(struct dentry *dentry, const char *name,
|
|
const void *buffer, size_t size, int flags, int type)
|
|
{
|
|
char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0};
|
|
size_t len = strlen(name);
|
|
|
|
if (!strcmp(name, ""))
|
|
return -EINVAL;
|
|
|
|
if (len + XATTR_SECURITY_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN)
|
|
return -EOPNOTSUPP;
|
|
|
|
strcpy(xattr_name, XATTR_SECURITY_PREFIX);
|
|
strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name);
|
|
|
|
return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
|
|
}
|
|
|
|
static size_t hfsplus_security_listxattr(struct dentry *dentry, char *list,
|
|
size_t list_size, const char *name, size_t name_len, int type)
|
|
{
|
|
/*
|
|
* This method is not used.
|
|
* It is used hfsplus_listxattr() instead of generic_listxattr().
|
|
*/
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int hfsplus_initxattrs(struct inode *inode,
|
|
const struct xattr *xattr_array,
|
|
void *fs_info)
|
|
{
|
|
const struct xattr *xattr;
|
|
char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0};
|
|
size_t xattr_name_len;
|
|
int err = 0;
|
|
|
|
for (xattr = xattr_array; xattr->name != NULL; xattr++) {
|
|
xattr_name_len = strlen(xattr->name);
|
|
|
|
if (xattr_name_len == 0)
|
|
continue;
|
|
|
|
if (xattr_name_len + XATTR_SECURITY_PREFIX_LEN >
|
|
HFSPLUS_ATTR_MAX_STRLEN)
|
|
return -EOPNOTSUPP;
|
|
|
|
strcpy(xattr_name, XATTR_SECURITY_PREFIX);
|
|
strcpy(xattr_name +
|
|
XATTR_SECURITY_PREFIX_LEN, xattr->name);
|
|
memset(xattr_name +
|
|
XATTR_SECURITY_PREFIX_LEN + xattr_name_len, 0, 1);
|
|
|
|
err = __hfsplus_setxattr(inode, xattr_name,
|
|
xattr->value, xattr->value_len, 0);
|
|
if (err)
|
|
break;
|
|
}
|
|
return err;
|
|
}
|
|
|
|
int hfsplus_init_security(struct inode *inode, struct inode *dir,
|
|
const struct qstr *qstr)
|
|
{
|
|
return security_inode_init_security(inode, dir, qstr,
|
|
&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,
|
|
.get = hfsplus_security_getxattr,
|
|
.set = hfsplus_security_setxattr,
|
|
};
|