66a84bd92f
Add stub headers for Linux kernel interfaces that ext4 code expects: - capability.h: stub capability checks (always return true) - cred.h: stub credential types and macros - file.h: stub file descriptor helpers - path.h: basic path structure definition - security.h: stub LSM hooks (no-ops) - seq_file.h: stub seq_file interface These provide minimal definitions to allow ext4 code to compile. Co-developed-by: Claude Opus 4.5 <noreply@anthropic.com> Signed-off-by: Simon Glass <simon.glass@canonical.com>
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* Credentials management - see Documentation/security/credentials.rst
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*
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* Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*/
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#ifndef _LINUX_CRED_H
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#define _LINUX_CRED_H
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#include <linux/types.h>
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/*
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* Stub definitions for Linux kernel credentials.
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* U-Boot doesn't implement user credentials.
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*/
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typedef struct {
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uid_t val;
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} kuid_t;
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typedef struct {
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gid_t val;
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} kgid_t;
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struct cred {
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kuid_t uid;
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kgid_t gid;
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kuid_t fsuid;
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kgid_t fsgid;
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};
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#define current_cred() NULL
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#define current_uid() ((kuid_t){0})
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#define current_gid() ((kgid_t){0})
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#define current_fsuid() ((kuid_t){0})
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#define current_fsgid() ((kgid_t){0})
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#define from_kuid(ns, uid) ((uid).val)
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#define from_kgid(ns, gid) ((gid).val)
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#define make_kuid(ns, uid) ((kuid_t){uid})
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#define make_kgid(ns, gid) ((kgid_t){gid})
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#define uid_eq(a, b) ((a).val == (b).val)
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#define gid_eq(a, b) ((a).val == (b).val)
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#define uid_valid(uid) ((uid).val != (uid_t)-1)
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#define gid_valid(gid) ((gid).val != (gid_t)-1)
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#define GLOBAL_ROOT_UID ((kuid_t){0})
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#define GLOBAL_ROOT_GID ((kgid_t){0})
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#define INVALID_UID ((kuid_t){-1})
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#define INVALID_GID ((kgid_t){-1})
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#endif /* _LINUX_CRED_H */
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