diff options
Diffstat (limited to 'arch/ppc/kernel/ptrace.c')
| -rw-r--r-- | arch/ppc/kernel/ptrace.c | 40 |
1 files changed, 36 insertions, 4 deletions
diff --git a/arch/ppc/kernel/ptrace.c b/arch/ppc/kernel/ptrace.c index 59d59a8dc249..e7aee4108dea 100644 --- a/arch/ppc/kernel/ptrace.c +++ b/arch/ppc/kernel/ptrace.c @@ -27,6 +27,9 @@ #include <linux/user.h> #include <linux/security.h> #include <linux/signal.h> +#include <linux/seccomp.h> +#include <linux/audit.h> +#include <linux/module.h> #include <asm/uaccess.h> #include <asm/page.h> @@ -455,11 +458,10 @@ out: return ret; } -void do_syscall_trace(void) +static void do_syscall_trace(void) { - if (!test_thread_flag(TIF_SYSCALL_TRACE) - || !(current->ptrace & PT_PTRACED)) - return; + /* 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) ? 0x80 : 0)); @@ -473,3 +475,33 @@ void do_syscall_trace(void) current->exit_code = 0; } } + +void do_syscall_trace_enter(struct pt_regs *regs) +{ + if (test_thread_flag(TIF_SYSCALL_TRACE) + && (current->ptrace & PT_PTRACED)) + do_syscall_trace(); + + if (unlikely(current->audit_context)) + audit_syscall_entry(current, AUDIT_ARCH_PPC, + regs->gpr[0], + regs->gpr[3], regs->gpr[4], + regs->gpr[5], regs->gpr[6]); +} + +void do_syscall_trace_leave(struct pt_regs *regs) +{ + secure_computing(regs->gpr[0]); + + if (unlikely(current->audit_context)) + audit_syscall_exit(current, + (regs->ccr&0x1000)?AUDITSC_FAILURE:AUDITSC_SUCCESS, + regs->result); + + if ((test_thread_flag(TIF_SYSCALL_TRACE)) + && (current->ptrace & PT_PTRACED)) + do_syscall_trace(); +} + +EXPORT_SYMBOL(do_syscall_trace_enter); +EXPORT_SYMBOL(do_syscall_trace_leave); |