#include <linux/module.h>
#include <linux/string.h>
+#include <linux/capability.h>
#include <linux/fs.h>
#include <linux/smp_lock.h>
#include <linux/ext3_jbd.h>
#define XATTR_TRUSTED_PREFIX "trusted."
static size_t
-ext3_xattr_trusted_list(char *list, struct inode *inode,
- const char *name, int name_len)
+ext3_xattr_trusted_list(struct inode *inode, char *list, size_t list_size,
+ const char *name, size_t name_len)
{
- const int prefix_len = sizeof(XATTR_TRUSTED_PREFIX)-1;
+ const size_t prefix_len = sizeof(XATTR_TRUSTED_PREFIX)-1;
+ const size_t total_len = prefix_len + name_len + 1;
if (!capable(CAP_SYS_ADMIN))
return 0;
- if (list) {
+ 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 prefix_len + name_len + 1;
+ return total_len;
}
static int
{
if (strcmp(name, "") == 0)
return -EINVAL;
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
return ext3_xattr_get(inode, EXT3_XATTR_INDEX_TRUSTED, name,
buffer, size);
}
{
if (strcmp(name, "") == 0)
return -EINVAL;
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
return ext3_xattr_set(inode, EXT3_XATTR_INDEX_TRUSTED, name,
value, size, flags);
}
-struct ext3_xattr_handler ext3_xattr_trusted_handler = {
+struct xattr_handler ext3_xattr_trusted_handler = {
.prefix = XATTR_TRUSTED_PREFIX,
.list = ext3_xattr_trusted_list,
.get = ext3_xattr_trusted_get,