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Revision 91dc182ca6e25ee8b648ed2fb2a41859ead34903 authored by Dave C Boutcher on 14 January 2006, 00:39:24 UTC, committed by Paul Mackerras on 14 January 2006, 01:04:25 UTC 
[PATCH] powerpc: special-case ibm,suspend-me RTAS call
 
Handle the ibm,suspend-me RTAS call specially.  It needs
to be wrapped in a set of synchronization hypervisor calls
(H_Join).  When the H_Join calls are made on all CPUs, the
intent is that only one will return with H_Continue, meaning
that he is the "last man standing".  That CPU then issues the
ibm,suspend-me call.  What is interesting, of course, is that
the CPU running when the rtas syscall is made, may NOT be the
CPU that ultimately executes the ibm,suspend-me rtas call.

Signed-off-by: Dave Boutcher <sleddog@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
1 parent 91f62a2
Raw File
xfs_cap.h 
/*
 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef __XFS_CAP_H__
#define __XFS_CAP_H__

/*
 * Capabilities
 */
typedef __uint64_t xfs_cap_value_t;

typedef struct xfs_cap_set {
	xfs_cap_value_t	cap_effective;	/* use in capability checks */
	xfs_cap_value_t	cap_permitted;	/* combined with file attrs */
	xfs_cap_value_t	cap_inheritable;/* pass through exec */
} xfs_cap_set_t;

/* On-disk XFS extended attribute names */
#define SGI_CAP_FILE	"SGI_CAP_FILE"
#define SGI_CAP_FILE_SIZE	(sizeof(SGI_CAP_FILE)-1)
#define SGI_CAP_LINUX	"SGI_CAP_LINUX"
#define SGI_CAP_LINUX_SIZE	(sizeof(SGI_CAP_LINUX)-1)

/*
 * For Linux, we take the bitfields directly from capability.h
 * and no longer attempt to keep this attribute ondisk compatible
 * with IRIX.  Since this attribute is only set on exectuables,
 * it just doesn't make much sense to try.  We do use a different
 * named attribute though, to avoid confusion.
 */

#ifdef __KERNEL__

#ifdef CONFIG_FS_POSIX_CAP

#include <linux/posix_cap_xattr.h>

struct vnode;

extern int xfs_cap_vhascap(struct vnode *);
extern int xfs_cap_vset(struct vnode *, void *, size_t);
extern int xfs_cap_vget(struct vnode *, void *, size_t);
extern int xfs_cap_vremove(struct vnode *vp);

#define _CAP_EXISTS		xfs_cap_vhascap

#else
#define xfs_cap_vset(v,p,sz)	(-EOPNOTSUPP)
#define xfs_cap_vget(v,p,sz)	(-EOPNOTSUPP)
#define xfs_cap_vremove(v)	(-EOPNOTSUPP)
#define _CAP_EXISTS		(NULL)
#endif

#endif	/* __KERNEL__ */

#endif  /* __XFS_CAP_H__ */
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