kernel-ark/fs/gfs2/eaops.c
Tim Schmielau cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00

230 lines
5.4 KiB
C

/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU General Public License version 2.
*/
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/buffer_head.h>
#include <linux/xattr.h>
#include <linux/gfs2_ondisk.h>
#include <linux/lm_interface.h>
#include <asm/uaccess.h>
#include "gfs2.h"
#include "incore.h"
#include "acl.h"
#include "eaops.h"
#include "eattr.h"
#include "util.h"
/**
* gfs2_ea_name2type - get the type of the ea, and truncate type from the name
* @namep: ea name, possibly with type appended
*
* Returns: GFS2_EATYPE_XXX
*/
unsigned int gfs2_ea_name2type(const char *name, const char **truncated_name)
{
unsigned int type;
if (strncmp(name, "system.", 7) == 0) {
type = GFS2_EATYPE_SYS;
if (truncated_name)
*truncated_name = name + sizeof("system.") - 1;
} else if (strncmp(name, "user.", 5) == 0) {
type = GFS2_EATYPE_USR;
if (truncated_name)
*truncated_name = name + sizeof("user.") - 1;
} else if (strncmp(name, "security.", 9) == 0) {
type = GFS2_EATYPE_SECURITY;
if (truncated_name)
*truncated_name = name + sizeof("security.") - 1;
} else {
type = GFS2_EATYPE_UNUSED;
if (truncated_name)
*truncated_name = NULL;
}
return type;
}
static int user_eo_get(struct gfs2_inode *ip, struct gfs2_ea_request *er)
{
struct inode *inode = &ip->i_inode;
int error = permission(inode, MAY_READ, NULL);
if (error)
return error;
return gfs2_ea_get_i(ip, er);
}
static int user_eo_set(struct gfs2_inode *ip, struct gfs2_ea_request *er)
{
struct inode *inode = &ip->i_inode;
if (S_ISREG(inode->i_mode) ||
(S_ISDIR(inode->i_mode) && !(inode->i_mode & S_ISVTX))) {
int error = permission(inode, MAY_WRITE, NULL);
if (error)
return error;
} else
return -EPERM;
return gfs2_ea_set_i(ip, er);
}
static int user_eo_remove(struct gfs2_inode *ip, struct gfs2_ea_request *er)
{
struct inode *inode = &ip->i_inode;
if (S_ISREG(inode->i_mode) ||
(S_ISDIR(inode->i_mode) && !(inode->i_mode & S_ISVTX))) {
int error = permission(inode, MAY_WRITE, NULL);
if (error)
return error;
} else
return -EPERM;
return gfs2_ea_remove_i(ip, er);
}
static int system_eo_get(struct gfs2_inode *ip, struct gfs2_ea_request *er)
{
if (!GFS2_ACL_IS_ACCESS(er->er_name, er->er_name_len) &&
!GFS2_ACL_IS_DEFAULT(er->er_name, er->er_name_len) &&
!capable(CAP_SYS_ADMIN))
return -EPERM;
if (GFS2_SB(&ip->i_inode)->sd_args.ar_posix_acl == 0 &&
(GFS2_ACL_IS_ACCESS(er->er_name, er->er_name_len) ||
GFS2_ACL_IS_DEFAULT(er->er_name, er->er_name_len)))
return -EOPNOTSUPP;
return gfs2_ea_get_i(ip, er);
}
static int system_eo_set(struct gfs2_inode *ip, struct gfs2_ea_request *er)
{
int remove = 0;
int error;
if (GFS2_ACL_IS_ACCESS(er->er_name, er->er_name_len)) {
if (!(er->er_flags & GFS2_ERF_MODE)) {
er->er_mode = ip->i_inode.i_mode;
er->er_flags |= GFS2_ERF_MODE;
}
error = gfs2_acl_validate_set(ip, 1, er,
&remove, &er->er_mode);
if (error)
return error;
error = gfs2_ea_set_i(ip, er);
if (error)
return error;
if (remove)
gfs2_ea_remove_i(ip, er);
return 0;
} else if (GFS2_ACL_IS_DEFAULT(er->er_name, er->er_name_len)) {
error = gfs2_acl_validate_set(ip, 0, er,
&remove, NULL);
if (error)
return error;
if (!remove)
error = gfs2_ea_set_i(ip, er);
else {
error = gfs2_ea_remove_i(ip, er);
if (error == -ENODATA)
error = 0;
}
return error;
}
return -EPERM;
}
static int system_eo_remove(struct gfs2_inode *ip, struct gfs2_ea_request *er)
{
if (GFS2_ACL_IS_ACCESS(er->er_name, er->er_name_len)) {
int error = gfs2_acl_validate_remove(ip, 1);
if (error)
return error;
} else if (GFS2_ACL_IS_DEFAULT(er->er_name, er->er_name_len)) {
int error = gfs2_acl_validate_remove(ip, 0);
if (error)
return error;
} else
return -EPERM;
return gfs2_ea_remove_i(ip, er);
}
static int security_eo_get(struct gfs2_inode *ip, struct gfs2_ea_request *er)
{
struct inode *inode = &ip->i_inode;
int error = permission(inode, MAY_READ, NULL);
if (error)
return error;
return gfs2_ea_get_i(ip, er);
}
static int security_eo_set(struct gfs2_inode *ip, struct gfs2_ea_request *er)
{
struct inode *inode = &ip->i_inode;
int error = permission(inode, MAY_WRITE, NULL);
if (error)
return error;
return gfs2_ea_set_i(ip, er);
}
static int security_eo_remove(struct gfs2_inode *ip, struct gfs2_ea_request *er)
{
struct inode *inode = &ip->i_inode;
int error = permission(inode, MAY_WRITE, NULL);
if (error)
return error;
return gfs2_ea_remove_i(ip, er);
}
static struct gfs2_eattr_operations gfs2_user_eaops = {
.eo_get = user_eo_get,
.eo_set = user_eo_set,
.eo_remove = user_eo_remove,
.eo_name = "user",
};
struct gfs2_eattr_operations gfs2_system_eaops = {
.eo_get = system_eo_get,
.eo_set = system_eo_set,
.eo_remove = system_eo_remove,
.eo_name = "system",
};
static struct gfs2_eattr_operations gfs2_security_eaops = {
.eo_get = security_eo_get,
.eo_set = security_eo_set,
.eo_remove = security_eo_remove,
.eo_name = "security",
};
struct gfs2_eattr_operations *gfs2_ea_ops[] = {
NULL,
&gfs2_user_eaops,
&gfs2_system_eaops,
&gfs2_security_eaops,
};