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authorAndreas Gruenbacher <agruenba@redhat.com>2015-12-02 16:44:43 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2015-12-14 03:46:12 +0300
commit764a5c6b1fa4306dd7573c1d80914254909cd036 (patch)
tree6e5ceb636c3b53cdc0994cf8c2415656e2b12e82 /fs/ext4/xattr_trusted.c
parent1046cb119521b5e1881f380dc99729fc84c96661 (diff)
downloadlinux-764a5c6b1fa4306dd7573c1d80914254909cd036.tar.xz
xattr handlers: Simplify list operation
Change the list operation to only return whether or not an attribute should be listed. Copying the attribute names into the buffer is moved to the callers. Since the result only depends on the dentry and not on the attribute name, we do not pass the attribute name to list operations. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ext4/xattr_trusted.c')
-rw-r--r--fs/ext4/xattr_trusted.c19
1 files changed, 3 insertions, 16 deletions
diff --git a/fs/ext4/xattr_trusted.c b/fs/ext4/xattr_trusted.c
index 121fdf9fdc02..2a3c6f9b8cb8 100644
--- a/fs/ext4/xattr_trusted.c
+++ b/fs/ext4/xattr_trusted.c
@@ -12,23 +12,10 @@
#include "ext4.h"
#include "xattr.h"
-static size_t
-ext4_xattr_trusted_list(const struct xattr_handler *handler,
- struct dentry *dentry, char *list, size_t list_size,
- const char *name, size_t name_len)
+static bool
+ext4_xattr_trusted_list(struct dentry *dentry)
{
- const size_t prefix_len = XATTR_TRUSTED_PREFIX_LEN;
- const size_t total_len = prefix_len + name_len + 1;
-
- if (!capable(CAP_SYS_ADMIN))
- return 0;
-
- if (list && total_len <= list_size) {
- memcpy(list, XATTR_TRUSTED_PREFIX, prefix_len);
- memcpy(list+prefix_len, name, name_len);
- list[prefix_len + name_len] = '\0';
- }
- return total_len;
+ return capable(CAP_SYS_ADMIN);
}
static int