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Commit 7a4566b0 authored by Aneesh Kumar K.V's avatar Aneesh Kumar K.V Committed by Eric Van Hensbergen
Browse files

fs/9p: Add xattr callbacks for POSIX ACL 



This patch implement fetching POSIX ACL from the server

Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: default avatarVenkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: default avatarEric Van Hensbergen <ericvh@gmail.com>
parent 85ff872d

fs/9p/acl.c

+41 −0
Original line number Diff line number Diff line
@@ -94,3 +94,44 @@ int v9fs_check_acl(struct inode *inode, int mask) 
	}

	return -EAGAIN;

}



static int v9fs_xattr_get_acl(struct dentry *dentry, const char *name,

			      void *buffer, size_t size, int type)

{

	struct posix_acl *acl;

	int error;



	if (strcmp(name, "") != 0)

		return -EINVAL;



	acl = v9fs_get_cached_acl(dentry->d_inode, type);

	if (IS_ERR(acl))

		return PTR_ERR(acl);

	if (acl == NULL)

		return -ENODATA;

	error = posix_acl_to_xattr(acl, buffer, size);

	posix_acl_release(acl);



	return error;

}



static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,

			      const void *value, size_t size,

			      int flags, int type)

{

	return 0;

}



const struct xattr_handler v9fs_xattr_acl_access_handler = {

	.prefix	= POSIX_ACL_XATTR_ACCESS,

	.flags	= ACL_TYPE_ACCESS,

	.get	= v9fs_xattr_get_acl,

	.set	= v9fs_xattr_set_acl,

};



const struct xattr_handler v9fs_xattr_acl_default_handler = {

	.prefix	= POSIX_ACL_XATTR_DEFAULT,

	.flags	= ACL_TYPE_DEFAULT,

	.get	= v9fs_xattr_get_acl,

	.set	= v9fs_xattr_set_acl,

};

fs/9p/xattr.c

+4 −0
Original line number Diff line number Diff line
@@ -164,5 +164,9 @@ ssize_t v9fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size) 


const struct xattr_handler *v9fs_xattr_handlers[] = {

	&v9fs_xattr_user_handler,

#ifdef CONFIG_9P_FS_POSIX_ACL

	&v9fs_xattr_acl_access_handler,

	&v9fs_xattr_acl_default_handler,

#endif

	NULL

};

fs/9p/xattr.h

+2 −0
Original line number Diff line number Diff line
@@ -20,6 +20,8 @@ 


extern const struct xattr_handler *v9fs_xattr_handlers[];

extern struct xattr_handler v9fs_xattr_user_handler;

extern const struct xattr_handler v9fs_xattr_acl_access_handler;

extern const struct xattr_handler v9fs_xattr_acl_default_handler;



extern ssize_t v9fs_fid_xattr_get(struct p9_fid *, const char *,

				  void *, size_t);