From 73ccefab8a6590bb3d5b44c046010139108ab7ca Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sun, 27 Jul 2008 00:30:50 -0700 Subject: sparc64: tracehook syscall This changes sparc64 syscall tracing to use the new tracehook.h entry points. [ Add assembly changes to force an immediate -ENOSYS return from the system call when syscall_trace() returns non-zero at syscall entry. -DaveM ] Signed-off-by: Roland McGrath Signed-off-by: David S. Miller --- arch/sparc64/kernel/ptrace.c | 32 ++++++++++++-------------------- 1 file changed, 12 insertions(+), 20 deletions(-) (limited to 'arch/sparc64/kernel/ptrace.c') diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c index f6c9fc92921..bd578cc4856 100644 --- a/arch/sparc64/kernel/ptrace.c +++ b/arch/sparc64/kernel/ptrace.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include @@ -1049,8 +1050,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) return ret; } -asmlinkage void syscall_trace(struct pt_regs *regs, int syscall_exit_p) +asmlinkage int syscall_trace(struct pt_regs *regs, int syscall_exit_p) { + int ret = 0; + /* do the secure computing check first */ secure_computing(regs->u_regs[UREG_G1]); @@ -1064,27 +1067,14 @@ asmlinkage void syscall_trace(struct pt_regs *regs, int syscall_exit_p) audit_syscall_exit(result, regs->u_regs[UREG_I0]); } - if (!(current->ptrace & PT_PTRACED)) - goto out; - - if (!test_thread_flag(TIF_SYSCALL_TRACE)) - goto out; - - ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) - ? 0x80 : 0)); - - /* - * this isn't the same as continuing with a signal, but it will do - * for normal use. strace only continues with a signal if the - * stopping signal is not SIGTRAP. -brl - */ - if (current->exit_code) { - send_sig(current->exit_code, current, 1); - current->exit_code = 0; + if (test_thread_flag(TIF_SYSCALL_TRACE)) { + if (syscall_exit_p) + tracehook_report_syscall_exit(regs, 0); + else + ret = tracehook_report_syscall_entry(regs); } -out: - if (unlikely(current->audit_context) && !syscall_exit_p) + if (unlikely(current->audit_context) && !syscall_exit_p && !ret) audit_syscall_entry((test_thread_flag(TIF_32BIT) ? AUDIT_ARCH_SPARC : AUDIT_ARCH_SPARC64), @@ -1093,4 +1083,6 @@ out: regs->u_regs[UREG_I1], regs->u_regs[UREG_I2], regs->u_regs[UREG_I3]); + + return ret; } -- cgit v1.2.3