MIPS: asm: syscall: Define syscall_get_arch
This effectively renames __syscall_get_arch to syscall_get_arch and implements a compatible interface for the seccomp API. The seccomp code (kernel/seccomp.c) expects a syscall_get_arch function to be defined for every architecture, so we drop the leading underscores from the existing function. This also makes use of the 'task' argument to determine the type the process instead of assuming the process has the same characteristics as the kernel it's running on. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Reviewed-by: Paul Burton <paul.burton@imgtec.com> Reviewed-by: James Hogan <james.hogan@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6398/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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@ -107,11 +107,13 @@ extern const unsigned long sys_call_table[];
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extern const unsigned long sys32_call_table[];
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extern const unsigned long sysn32_call_table[];
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static inline int __syscall_get_arch(void)
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static inline int syscall_get_arch(struct task_struct *task,
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struct pt_regs *regs)
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{
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int arch = EM_MIPS;
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#ifdef CONFIG_64BIT
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arch |= __AUDIT_ARCH_64BIT;
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if (!test_tsk_thread_flag(task, TIF_32BIT_REGS))
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arch |= __AUDIT_ARCH_64BIT;
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#endif
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#if defined(__LITTLE_ENDIAN)
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arch |= __AUDIT_ARCH_LE;
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@ -677,7 +677,7 @@ asmlinkage void syscall_trace_enter(struct pt_regs *regs)
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if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
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trace_sys_enter(regs, regs->regs[2]);
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audit_syscall_entry(__syscall_get_arch(),
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audit_syscall_entry(syscall_get_arch(current, regs),
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regs->regs[2],
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regs->regs[4], regs->regs[5],
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regs->regs[6], regs->regs[7]);
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