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1cd02a27a9
parent_kuid and child_kuid are kuids, there is no reason to make them uint64_t. (And anyway, in the kernel, the normal name for that would be u64, not uint64_t.) check_setuid_policy_hashtable_key() and check_setuid_policy_hashtable_key_value() are basically the same thing, merge them. Also fix the comment that claimed that (1<<8)==128. Signed-off-by: Jann Horn <jannh@google.com> Signed-off-by: Micah Morton <mortonm@chromium.org>
53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* SafeSetID Linux Security Module
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*
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* Author: Micah Morton <mortonm@chromium.org>
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*
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* Copyright (C) 2018 The Chromium OS Authors.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2, as
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* published by the Free Software Foundation.
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*
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*/
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#ifndef _SAFESETID_H
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#define _SAFESETID_H
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#include <linux/types.h>
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#include <linux/uidgid.h>
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#include <linux/hashtable.h>
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/* Flag indicating whether initialization completed */
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extern int safesetid_initialized;
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/* Function type. */
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enum safesetid_whitelist_file_write_type {
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SAFESETID_WHITELIST_ADD, /* Add whitelist policy. */
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SAFESETID_WHITELIST_FLUSH, /* Flush whitelist policies. */
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};
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enum sid_policy_type {
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SIDPOL_DEFAULT, /* source ID is unaffected by policy */
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SIDPOL_CONSTRAINED, /* source ID is affected by policy */
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SIDPOL_ALLOWED /* target ID explicitly allowed */
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};
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/*
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* Hash table entry to store safesetid policy signifying that 'src_uid'
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* can setid to 'dst_uid'.
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*/
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struct entry {
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struct hlist_node next;
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struct hlist_node dlist; /* for deletion cleanup */
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kuid_t src_uid;
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kuid_t dst_uid;
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};
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/* Add entry to safesetid whitelist to allow 'parent' to setid to 'child'. */
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int add_safesetid_whitelist_entry(kuid_t parent, kuid_t child);
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void flush_safesetid_whitelist_entries(void);
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#endif /* _SAFESETID_H */
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