mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
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Dmitry V. Levin
17fc7b8f9b
This function is going to be needed on all HAVE_ARCH_TRACEHOOK
architectures to implement PTRACE_SET_SYSCALL_INFO API.
This partially reverts commit 7962c2eddb ("arch: remove unused function
syscall_set_arguments()") by reusing some of old syscall_set_arguments()
implementations.
[[email protected]: fix compile time fortify checks]
Link: https://lkml.kernel.org/r/20250408213131.GA2872426@ax162
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Dmitry V. Levin <[email protected]>
Signed-off-by: Nathan Chancellor <[email protected]>
Tested-by: Charlie Jenkins <[email protected]>
Reviewed-by: Charlie Jenkins <[email protected]>
Acked-by: Helge Deller <[email protected]> # parisc
Reviewed-by: Maciej W. Rozycki <[email protected]> [mips]
Cc: Alexander Gordeev <[email protected]>
Cc: Alexey Gladkov (Intel) <[email protected]>
Cc: Andreas Larsson <[email protected]>
Cc: anton ivanov <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Borislav Betkov <[email protected]>
Cc: Brian Cain <[email protected]>
Cc: Christian Borntraeger <[email protected]>
Cc: Christian Zankel <[email protected]>
Cc: Christophe Leroy <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Davide Berardi <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: Dinh Nguyen <[email protected]>
Cc: Eugene Syromiatnikov <[email protected]>
Cc: Eugene Syromyatnikov <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Guo Ren <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Huacai Chen <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Johannes Berg <[email protected]>
Cc: John Paul Adrian Glaubitz <[email protected]>
Cc: Jonas Bonn <[email protected]>
Cc: Madhavan Srinivasan <[email protected]>
Cc: Max Filippov <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Michal Simek <[email protected]>
Cc: Mike Frysinger <[email protected]>
Cc: Naveen N Rao <[email protected]>
Cc: Nicholas Piggin <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Renzo Davoi <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: Rich Felker <[email protected]>
Cc: Russel King <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: Stafford Horne <[email protected]>
Cc: Stefan Kristiansson <[email protected]>
Cc: Sven Schnelle <[email protected]>
Cc: Thomas Gleinxer <[email protected]>
Cc: Vasily Gorbik <[email protected]>
Cc: Vineet Gupta <[email protected]>
Cc: WANG Xuerui <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_SYSCALL_H
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#define __ASM_SYSCALL_H
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#include <linux/sched.h>
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#include <linux/err.h>
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#include <abi/regdef.h>
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#include <uapi/linux/audit.h>
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extern void *sys_call_table[];
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static inline int
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syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
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{
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return regs_syscallid(regs);
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}
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static inline void
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syscall_set_nr(struct task_struct *task, struct pt_regs *regs,
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int sysno)
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{
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regs_syscallid(regs) = sysno;
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}
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static inline void
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syscall_rollback(struct task_struct *task, struct pt_regs *regs)
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{
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regs->a0 = regs->orig_a0;
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}
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static inline long
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syscall_get_error(struct task_struct *task, struct pt_regs *regs)
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{
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unsigned long error = regs->a0;
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return IS_ERR_VALUE(error) ? error : 0;
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}
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static inline long
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syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
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{
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return regs->a0;
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}
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static inline void
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syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
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int error, long val)
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{
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regs->a0 = (long) error ?: val;
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}
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static inline void
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syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
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unsigned long *args)
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{
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args[0] = regs->orig_a0;
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args++;
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memcpy(args, ®s->a1, 5 * sizeof(args[0]));
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}
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static inline void
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syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
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const unsigned long *args)
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{
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memcpy(®s->a0, args, 6 * sizeof(regs->a0));
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/*
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* Also copy the first argument into orig_a0
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* so that syscall_get_arguments() would return it
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* instead of the previous value.
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*/
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regs->orig_a0 = regs->a0;
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}
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static inline int
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syscall_get_arch(struct task_struct *task)
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{
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return AUDIT_ARCH_CSKY;
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}
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#endif /* __ASM_SYSCALL_H */
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