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sh: Add SECCOMP_FILTER

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Port sh to use the new SECCOMP_FILTER code.

Signed-off-by: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de>
Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: Rich Felker <dalias@libc.org>
This commit is contained in:
Michael Karcher
2020-07-23 01:13:21 +02:00
committed by Rich Felker
parent 9d2ec8f68e
commit 0bb605c2c7
4 changed files with 13 additions and 3 deletions
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1
arch/sh/Kconfig
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@@ -28,6 +28,7 @@ config SUPERH
select GUP_GET_PTE_LOW_HIGH if X2TLB
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_KGDB
select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ARCH_TRACEHOOK
select HAVE_COPY_THREAD_TLS
select HAVE_DEBUG_BUGVERBOSE

2
arch/sh/kernel/entry-common.S
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@@ -368,6 +368,8 @@ syscall_trace_entry:
mov.l 7f, r11 ! Call do_syscall_trace_enter which notifies
jsr @r11 ! superior (will chomp R[0-7])
nop
cmp/eq #-1, r0
bt syscall_exit
mov.l r0, @(OFF_R0,r15) ! Save return value
! Reload R0-R4 from kernel stack, where the
! parent may have modified them using

5
arch/sh/kernel/ptrace_32.c
View File

@@ -485,8 +485,6 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
{
long ret = 0;
secure_computing_strict(regs->regs[0]);
if (test_thread_flag(TIF_SYSCALL_TRACE) &&
tracehook_report_syscall_entry(regs))
/*
@@ -496,6 +494,9 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
*/
ret = -1L;
if (secure_computing() == -1)
return -1;
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
trace_sys_enter(regs, regs->regs[0]);