Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 53 insertions, 0 deletions

diff --git a/fs/ext2/xattr_security.c b/fs/ext2/xattr_security.c
new file mode 100644
index 000000000000..6a6c59fbe599
--- /dev/null
+++ b/fs/ext2/xattr_security.c
@@ -0,0 +1,53 @@
+/*
+ * linux/fs/ext2/xattr_security.c
+ * Handler for storing security labels as extended attributes.
+ */
+
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/fs.h>
+#include <linux/smp_lock.h>
+#include <linux/ext2_fs.h>
+#include "xattr.h"
+
+static size_t
+ext2_xattr_security_list(struct inode *inode, char *list, size_t list_size,
+                         const char *name, size_t name_len)
+{
+        const int prefix_len = sizeof(XATTR_SECURITY_PREFIX)-1;
+        const size_t total_len = prefix_len + name_len + 1;
+
+        if (list && total_len <= list_size) {
+                memcpy(list, XATTR_SECURITY_PREFIX, prefix_len);
+                memcpy(list+prefix_len, name, name_len);
+                list[prefix_len + name_len] = '\0';
+        }
+        return total_len;
+}
+
+static int
+ext2_xattr_security_get(struct inode *inode, const char *name,
+                       void *buffer, size_t size)
+{
+        if (strcmp(name, "") == 0)
+                return -EINVAL;
+        return ext2_xattr_get(inode, EXT2_XATTR_INDEX_SECURITY, name,
+                              buffer, size);
+}
+
+static int
+ext2_xattr_security_set(struct inode *inode, const char *name,
+                       const void *value, size_t size, int flags)
+{
+        if (strcmp(name, "") == 0)
+                return -EINVAL;
+        return ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY, name,
+                              value, size, flags);
+}
+
+struct xattr_handler ext2_xattr_security_handler = {
+        .prefix = XATTR_SECURITY_PREFIX,
+        .list   = ext2_xattr_security_list,
+        .get    = ext2_xattr_security_get,
+        .set    = ext2_xattr_security_set,
+};