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https://github.com/linux-msm/laptops-kernel.git
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Gregory PriceandThomas Gleixner
ee935e8dc7
Syscall User Dispatch is presently built under CONFIG_GENERIC_SYSCALL and cannot be disabled independently. Add CONFIG_SYSCALL_USER_DISPATCH to make it an optional feature. Signed-off-by: Gregory Price <gourry@gourry.net> Signed-off-by: Thomas Gleixner <tglx@kernel.org> Link: https://patch.msgid.link/20260706140020.873735-2-gourry@gourry.net
76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2020 Collabora Ltd.
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*/
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#ifndef _SYSCALL_USER_DISPATCH_H
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#define _SYSCALL_USER_DISPATCH_H
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#include <linux/thread_info.h>
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#include <linux/sched.h>
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#include <linux/syscall_user_dispatch_types.h>
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struct pt_regs;
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#ifdef CONFIG_SYSCALL_USER_DISPATCH
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bool syscall_user_dispatch(struct pt_regs *regs);
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static __always_inline bool syscall_user_dispatch_clear_on_dispatch(void)
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{
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if (likely(!current->syscall_dispatch.on_dispatch))
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return false;
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current->syscall_dispatch.on_dispatch = false;
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return true;
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}
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int set_syscall_user_dispatch(unsigned long mode, unsigned long offset,
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unsigned long len, char __user *selector);
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#define clear_syscall_work_syscall_user_dispatch(tsk) \
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clear_task_syscall_work(tsk, SYSCALL_USER_DISPATCH)
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int syscall_user_dispatch_get_config(struct task_struct *task, unsigned long size,
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void __user *data);
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int syscall_user_dispatch_set_config(struct task_struct *task, unsigned long size,
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void __user *data);
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#else
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static __always_inline bool syscall_user_dispatch(struct pt_regs *regs)
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{
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return false;
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}
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static __always_inline bool syscall_user_dispatch_clear_on_dispatch(void)
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{
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return false;
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}
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static inline int set_syscall_user_dispatch(unsigned long mode, unsigned long offset,
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unsigned long len, char __user *selector)
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{
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return -EINVAL;
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}
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static inline void clear_syscall_work_syscall_user_dispatch(struct task_struct *tsk)
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{
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}
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static inline int syscall_user_dispatch_get_config(struct task_struct *task,
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unsigned long size, void __user *data)
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{
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return -EINVAL;
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}
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static inline int syscall_user_dispatch_set_config(struct task_struct *task,
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unsigned long size, void __user *data)
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{
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return -EINVAL;
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}
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#endif /* CONFIG_SYSCALL_USER_DISPATCH */
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#endif /* _SYSCALL_USER_DISPATCH_H */
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