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security: new security_inode_init_security API adds function callback

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This patch changes the security_inode_init_security API by adding a
filesystem specific callback to write security extended attributes.
This change is in preparation for supporting the initialization of
multiple LSM xattrs and the EVM xattr.  Initially the callback function
walks an array of xattrs, writing each xattr separately, but could be
optimized to write multiple xattrs at once.

For existing security_inode_init_security() calls, which have not yet
been converted to use the new callback function, such as those in
reiserfs and ocfs2, this patch defines security_old_inode_init_security().

Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
This commit is contained in:
Mimi Zohar
2011-06-06 15:29:25 -04:00
parent 0f2a55d5bb
commit 9d8f13ba3f
14 changed files with 255 additions and 188 deletions
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4
fs/reiserfs/xattr_security.c
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@@ -66,8 +66,8 @@ int reiserfs_security_init(struct inode *dir, struct inode *inode,
if (IS_PRIVATE(dir))
return 0;
error = security_inode_init_security(inode, dir, qstr, &sec->name,
&sec->value, &sec->length);
error = security_old_inode_init_security(inode, dir, qstr, &sec->name,
&sec->value, &sec->length);
if (error) {
if (error == -EOPNOTSUPP)
error = 0;