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authorRahul Bedarkar <rahulbedarkar89@gmail.com>2017-04-20 13:36:18 -0400
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2017-04-20 13:47:27 -0400
commitcd81abdfd4ef0cf065517d0f82b4563b214027d0 (patch)
tree210808cf3007c8245d891cc2092e038595e432d0 /tools/perf/scripts/python/bin/stackcollapse-report
parent8b3afdfa48c70144479a2a5ca51a66e96ec60934 (diff)
dt-bindings: input: rotary-encoder: fix typo
s/rollove/rollover/ Signed-off-by: Rahul Bedarkar <rahulbedarkar89@gmail.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-report')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.2 (git 2.25.0) at 2026-06-18 21:25:15 -0400
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/*
 * linux/fs/posix_acl.c
 *
 *  Copyright (C) 2002 by Andreas Gruenbacher <a.gruenbacher@computer.org>
 *
 *  Fixes from William Schumacher incorporated on 15 March 2001.
 *     (Reported by Charles Bertsch, <CBertsch@microtest.com>).
 */

/*
 *  This file contains generic functions for manipulating
 *  POSIX 1003.1e draft standard 17 ACLs.
 */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <asm/atomic.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/posix_acl.h>
#include <linux/module.h>

#include <linux/errno.h>

EXPORT_SYMBOL(posix_acl_alloc);
EXPORT_SYMBOL(posix_acl_clone);
EXPORT_SYMBOL(posix_acl_valid);
EXPORT_SYMBOL(posix_acl_equiv_mode);
EXPORT_SYMBOL(posix_acl_from_mode);
EXPORT_SYMBOL(posix_acl_create_masq);
EXPORT_SYMBOL(posix_acl_chmod_masq);
EXPORT_SYMBOL(posix_acl_permission);

/*
 * Allocate a new ACL with the specified number of entries.
 */
struct posix_acl *
posix_acl_alloc(int count, gfp_t flags)
{
	const size_t size = sizeof(struct posix_acl) +
	                    count * sizeof(struct posix_acl_entry);
	struct posix_acl *acl = kmalloc(size, flags);
	if (acl) {
		atomic_set(&acl->a_refcount, 1);
		acl->a_count = count;
	}
	return acl;
}

/*
 * Clone an ACL.
 */
struct posix_acl *
posix_acl_clone(const struct posix_acl *acl, gfp_t flags)
{
	struct posix_acl *clone = NULL;

	if (acl) {
		int size = sizeof(struct posix_acl) + acl->a_count *
		           sizeof(struct posix_acl_entry);
		clone = kmemdup(acl, size, flags);
		if (clone)
			atomic_set(&clone->a_refcount, 1);
	}
	return clone;
}

/*
 * Check if an acl is valid. Returns 0 if it is, or -E... otherwise.
 */
int
posix_acl_valid(const struct posix_acl *acl)
{
	const struct posix_acl_entry *pa, *pe;
	int state = ACL_USER_OBJ;
	unsigned int id = 0;  /* keep gcc happy */
	int needs_mask = 0;

	FOREACH_ACL_ENTRY(pa, acl, pe) {
		if (pa->e_perm & ~(ACL_READ|ACL_WRITE|ACL_EXECUTE))
			return -EINVAL;
		switch (pa->e_tag) {
			case ACL_USER_OBJ:
				if (state == ACL_USER_OBJ) {
					id = 0;
					state = ACL_USER;
					break;
				}
				return -EINVAL;

			case ACL_USER:
				if (state != ACL_USER)
					return -EINVAL;