mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 16:29:59 +00:00
![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 1 normalized pattern(s): 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 version 2 of the license extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 315 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
80 lines
2 KiB
C
80 lines
2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* AppArmor security module
|
|
*
|
|
* This file contains AppArmor task related definitions and mediation
|
|
*
|
|
* Copyright 2017 Canonical Ltd.
|
|
*/
|
|
|
|
#ifndef __AA_TASK_H
|
|
#define __AA_TASK_H
|
|
|
|
static inline struct aa_task_ctx *task_ctx(struct task_struct *task)
|
|
{
|
|
return task->security + apparmor_blob_sizes.lbs_task;
|
|
}
|
|
|
|
/*
|
|
* struct aa_task_ctx - information for current task label change
|
|
* @nnp: snapshot of label at time of no_new_privs
|
|
* @onexec: profile to transition to on next exec (MAY BE NULL)
|
|
* @previous: profile the task may return to (MAY BE NULL)
|
|
* @token: magic value the task must know for returning to @previous_profile
|
|
*/
|
|
struct aa_task_ctx {
|
|
struct aa_label *nnp;
|
|
struct aa_label *onexec;
|
|
struct aa_label *previous;
|
|
u64 token;
|
|
};
|
|
|
|
int aa_replace_current_label(struct aa_label *label);
|
|
int aa_set_current_onexec(struct aa_label *label, bool stack);
|
|
int aa_set_current_hat(struct aa_label *label, u64 token);
|
|
int aa_restore_previous_label(u64 cookie);
|
|
struct aa_label *aa_get_task_label(struct task_struct *task);
|
|
|
|
/**
|
|
* aa_free_task_ctx - free a task_ctx
|
|
* @ctx: task_ctx to free (MAYBE NULL)
|
|
*/
|
|
static inline void aa_free_task_ctx(struct aa_task_ctx *ctx)
|
|
{
|
|
if (ctx) {
|
|
aa_put_label(ctx->nnp);
|
|
aa_put_label(ctx->previous);
|
|
aa_put_label(ctx->onexec);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* aa_dup_task_ctx - duplicate a task context, incrementing reference counts
|
|
* @new: a blank task context (NOT NULL)
|
|
* @old: the task context to copy (NOT NULL)
|
|
*/
|
|
static inline void aa_dup_task_ctx(struct aa_task_ctx *new,
|
|
const struct aa_task_ctx *old)
|
|
{
|
|
*new = *old;
|
|
aa_get_label(new->nnp);
|
|
aa_get_label(new->previous);
|
|
aa_get_label(new->onexec);
|
|
}
|
|
|
|
/**
|
|
* aa_clear_task_ctx_trans - clear transition tracking info from the ctx
|
|
* @ctx: task context to clear (NOT NULL)
|
|
*/
|
|
static inline void aa_clear_task_ctx_trans(struct aa_task_ctx *ctx)
|
|
{
|
|
AA_BUG(!ctx);
|
|
|
|
aa_put_label(ctx->previous);
|
|
aa_put_label(ctx->onexec);
|
|
ctx->previous = NULL;
|
|
ctx->onexec = NULL;
|
|
ctx->token = 0;
|
|
}
|
|
|
|
#endif /* __AA_TASK_H */
|