linux/fs/hfsplus/xattr_user.c
Vyacheslav Dubeyko 127e5f5ae5 hfsplus: rework functionality of getting, setting and deleting of extended attributes
Rework functionality of getting, setting and deleting of extended attributes.

Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com>
Reported-by: Hin-Tak Leung <htl10@users.sourceforge.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 19:10:10 -08:00

64 lines
1.6 KiB
C

/*
* linux/fs/hfsplus/xattr_user.c
*
* Vyacheslav Dubeyko <slava@dubeyko.com>
*
* Handler for user extended attributes.
*/
#include "hfsplus_fs.h"
#include "xattr.h"
static int hfsplus_user_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_USER_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN)
return -EOPNOTSUPP;
strcpy(xattr_name, XATTR_USER_PREFIX);
strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name);
return hfsplus_getxattr(dentry, xattr_name, buffer, size);
}
static int hfsplus_user_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_USER_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN)
return -EOPNOTSUPP;
strcpy(xattr_name, XATTR_USER_PREFIX);
strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name);
return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
}
static size_t hfsplus_user_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;
}
const struct xattr_handler hfsplus_xattr_user_handler = {
.prefix = XATTR_USER_PREFIX,
.list = hfsplus_user_listxattr,
.get = hfsplus_user_getxattr,
.set = hfsplus_user_setxattr,
};