diff options
| -rw-r--r-- | include/linux/entry-common.h | 36 | ||||
| -rw-r--r-- | kernel/entry/syscall-common.c | 4 |
2 files changed, 38 insertions, 2 deletions
diff --git a/include/linux/entry-common.h b/include/linux/entry-common.h index 5316004940c0..bea207e32c58 100644 --- a/include/linux/entry-common.h +++ b/include/linux/entry-common.h @@ -45,6 +45,24 @@ SYSCALL_WORK_SYSCALL_EXIT_TRAP | \ ARCH_SYSCALL_WORK_EXIT) +/** + * arch_ptrace_report_syscall_entry - Architecture specific ptrace_report_syscall_entry() wrapper + * + * Invoked from syscall_trace_enter() to wrap ptrace_report_syscall_entry(). + * + * This allows architecture specific ptrace_report_syscall_entry() + * implementations. If not defined by the architecture this falls back to + * to ptrace_report_syscall_entry(). + */ +static __always_inline int arch_ptrace_report_syscall_entry(struct pt_regs *regs); + +#ifndef arch_ptrace_report_syscall_entry +static __always_inline int arch_ptrace_report_syscall_entry(struct pt_regs *regs) +{ + return ptrace_report_syscall_entry(regs); +} +#endif + long syscall_trace_enter(struct pt_regs *regs, unsigned long work); /** @@ -113,6 +131,24 @@ static __always_inline long syscall_enter_from_user_mode(struct pt_regs *regs, l } /** + * arch_ptrace_report_syscall_exit - Architecture specific ptrace_report_syscall_exit() + * + * This allows architecture specific ptrace_report_syscall_exit() + * implementations. If not defined by the architecture this falls back to + * to ptrace_report_syscall_exit(). + */ +static __always_inline void arch_ptrace_report_syscall_exit(struct pt_regs *regs, + int step); + +#ifndef arch_ptrace_report_syscall_exit +static __always_inline void arch_ptrace_report_syscall_exit(struct pt_regs *regs, + int step) +{ + ptrace_report_syscall_exit(regs, step); +} +#endif + +/** * syscall_exit_work - Handle work before returning to user mode * @regs: Pointer to current pt_regs * @work: Current thread syscall work diff --git a/kernel/entry/syscall-common.c b/kernel/entry/syscall-common.c index e6237b536d8b..bb5f61f5629d 100644 --- a/kernel/entry/syscall-common.c +++ b/kernel/entry/syscall-common.c @@ -33,7 +33,7 @@ long syscall_trace_enter(struct pt_regs *regs, unsigned long work) /* Handle ptrace */ if (work & (SYSCALL_WORK_SYSCALL_TRACE | SYSCALL_WORK_SYSCALL_EMU)) { - ret = ptrace_report_syscall_entry(regs); + ret = arch_ptrace_report_syscall_entry(regs); if (ret || (work & SYSCALL_WORK_SYSCALL_EMU)) return -1L; } @@ -99,5 +99,5 @@ void syscall_exit_work(struct pt_regs *regs, unsigned long work) step = report_single_step(work); if (step || work & SYSCALL_WORK_SYSCALL_TRACE) - ptrace_report_syscall_exit(regs, step); + arch_ptrace_report_syscall_exit(regs, step); } |