aboutsummaryrefslogtreecommitdiffstats
path: root/fs/squashfs/xattr.c
diff options
context:
space:
mode:
authorAndreas Gruenbacher <agruenba@redhat.com>2015-10-04 19:18:53 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2015-11-13 20:34:33 -0500
commit0ddaf72c1da8b84bc2896e1997ef3f1a22765194 (patch)
tree10e02190e0b5ad55676ca6aa2fcc54d87b4cf9db /fs/squashfs/xattr.c
parent9p: xattr simplifications (diff)
downloadlinux-dev-0ddaf72c1da8b84bc2896e1997ef3f1a22765194.tar.xz
linux-dev-0ddaf72c1da8b84bc2896e1997ef3f1a22765194.zip
squashfs: xattr simplifications
Now that the xattr handler is passed to the xattr handler operations, we have access to the attribute name prefix, so simplify the squashfs xattr handlers a bit. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Cc: Phillip Lougher <phillip@squashfs.org.uk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to '')
-rw-r--r--fs/squashfs/xattr.c90
1 files changed, 31 insertions, 59 deletions
diff --git a/fs/squashfs/xattr.c b/fs/squashfs/xattr.c
index 4ae1e4ffd200..6a4cc344085c 100644
--- a/fs/squashfs/xattr.c
+++ b/fs/squashfs/xattr.c
@@ -212,96 +212,68 @@ failed:
}
-/*
- * User namespace support
- */
-static size_t squashfs_user_list(const struct xattr_handler *handler,
- struct dentry *d, char *list, size_t list_size,
- const char *name, size_t name_len)
+static size_t squashfs_xattr_handler_list(const struct xattr_handler *handler,
+ struct dentry *d, char *list,
+ size_t list_size, const char *name,
+ size_t name_len)
{
- if (list && XATTR_USER_PREFIX_LEN <= list_size)
- memcpy(list, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
- return XATTR_USER_PREFIX_LEN;
+ int len = strlen(handler->prefix);
+
+ if (list && len <= list_size)
+ memcpy(list, handler->prefix, len);
+ return len;
}
-static int squashfs_user_get(const struct xattr_handler *handler,
- struct dentry *d, const char *name, void *buffer,
- size_t size)
+static int squashfs_xattr_handler_get(const struct xattr_handler *handler,
+ struct dentry *d, const char *name,
+ void *buffer, size_t size)
{
if (name[0] == '\0')
return -EINVAL;
- return squashfs_xattr_get(d_inode(d), SQUASHFS_XATTR_USER, name,
+ return squashfs_xattr_get(d_inode(d), handler->flags, name,
buffer, size);
}
+/*
+ * User namespace support
+ */
static const struct xattr_handler squashfs_xattr_user_handler = {
.prefix = XATTR_USER_PREFIX,
- .list = squashfs_user_list,
- .get = squashfs_user_get
+ .flags = SQUASHFS_XATTR_USER,
+ .list = squashfs_xattr_handler_list,
+ .get = squashfs_xattr_handler_get
};
/*
* Trusted namespace support
*/
-static size_t squashfs_trusted_list(const struct xattr_handler *handler,
- struct dentry *d, char *list,
- size_t list_size, const char *name,
- size_t name_len)
+static size_t squashfs_trusted_xattr_handler_list(const struct xattr_handler *handler,
+ struct dentry *d, char *list,
+ size_t list_size, const char *name,
+ size_t name_len)
{
if (!capable(CAP_SYS_ADMIN))
return 0;
-
- if (list && XATTR_TRUSTED_PREFIX_LEN <= list_size)
- memcpy(list, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN);
- return XATTR_TRUSTED_PREFIX_LEN;
-}
-
-static int squashfs_trusted_get(const struct xattr_handler *handler,
- struct dentry *d, const char *name,
- void *buffer, size_t size)
-{
- if (name[0] == '\0')
- return -EINVAL;
-
- return squashfs_xattr_get(d_inode(d), SQUASHFS_XATTR_TRUSTED, name,
- buffer, size);
+ return squashfs_xattr_handler_list(handler, d, list, list_size, name,
+ name_len);
}
static const struct xattr_handler squashfs_xattr_trusted_handler = {
.prefix = XATTR_TRUSTED_PREFIX,
- .list = squashfs_trusted_list,
- .get = squashfs_trusted_get
+ .flags = SQUASHFS_XATTR_TRUSTED,
+ .list = squashfs_trusted_xattr_handler_list,
+ .get = squashfs_xattr_handler_get
};
/*
* Security namespace support
*/
-static size_t squashfs_security_list(const struct xattr_handler *handler,
- struct dentry *d, char *list,
- size_t list_size, const char *name,
- size_t name_len)
-{
- if (list && XATTR_SECURITY_PREFIX_LEN <= list_size)
- memcpy(list, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN);
- return XATTR_SECURITY_PREFIX_LEN;
-}
-
-static int squashfs_security_get(const struct xattr_handler *handler,
- struct dentry *d, const char *name,
- void *buffer, size_t size)
-{
- if (name[0] == '\0')
- return -EINVAL;
-
- return squashfs_xattr_get(d_inode(d), SQUASHFS_XATTR_SECURITY, name,
- buffer, size);
-}
-
static const struct xattr_handler squashfs_xattr_security_handler = {
.prefix = XATTR_SECURITY_PREFIX,
- .list = squashfs_security_list,
- .get = squashfs_security_get
+ .flags = SQUASHFS_XATTR_SECURITY,
+ .list = squashfs_xattr_handler_list,
+ .get = squashfs_xattr_handler_get
};
static const struct xattr_handler *squashfs_xattr_handler(int type)