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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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1d80f0cda1
To support changing syscall numbers we have to store it after syscall_trace_enter(). Signed-off-by: Richard Weinberger <richard@nod.at>
38 lines
775 B
C
38 lines
775 B
C
/*
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* Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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* Licensed under the GPL
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*/
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#include <linux/kernel.h>
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#include <linux/ptrace.h>
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#include <kern_util.h>
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#include <sysdep/ptrace.h>
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#include <sysdep/syscalls.h>
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#include <os.h>
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extern int syscall_table_size;
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#define NR_SYSCALLS (syscall_table_size / sizeof(void *))
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void handle_syscall(struct uml_pt_regs *r)
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{
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struct pt_regs *regs = container_of(r, struct pt_regs, regs);
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long result;
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int syscall;
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if (syscall_trace_enter(regs)) {
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result = -ENOSYS;
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goto out;
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}
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syscall = get_syscall(r);
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if ((syscall >= NR_SYSCALLS) || (syscall < 0))
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result = -ENOSYS;
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else result = EXECUTE_SYSCALL(syscall, regs);
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out:
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PT_REGS_SET_SYSCALL_RETURN(regs, result);
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syscall_trace_leave(regs);
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}
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