diff options
Diffstat (limited to 'arch/arm/kernel/ptrace.c')
| -rw-r--r-- | arch/arm/kernel/ptrace.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c index e591f72bcde..7b6256bb590 100644 --- a/arch/arm/kernel/ptrace.c +++ b/arch/arm/kernel/ptrace.c @@ -766,6 +766,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) (unsigned long __user *) data); break; + case PTRACE_SET_SYSCALL: + ret = 0; + child->ptrace_message = data; + break; + default: ret = ptrace_request(child, request, addr, data); break; @@ -774,14 +779,14 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) return ret; } -asmlinkage void syscall_trace(int why, struct pt_regs *regs) +asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno) { unsigned long ip; if (!test_thread_flag(TIF_SYSCALL_TRACE)) - return; + return scno; if (!(current->ptrace & PT_PTRACED)) - return; + return scno; /* * Save IP. IP is used to denote syscall entry/exit: @@ -790,6 +795,8 @@ asmlinkage void syscall_trace(int why, struct pt_regs *regs) ip = regs->ARM_ip; regs->ARM_ip = why; + current->ptrace_message = scno; + /* the 0x80 provides a way for the tracing parent to distinguish between a syscall stop and SIGTRAP delivery */ ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) @@ -804,4 +811,6 @@ asmlinkage void syscall_trace(int why, struct pt_regs *regs) current->exit_code = 0; } regs->ARM_ip = ip; + + return current->ptrace_message; } |