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MIPS: ptrace: Move away from secure_computing_strict 

MIPS now has the infrastructure for dynamic seccomp-bpf
filtering

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6400/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Markos Chandras 2014-01-22 14:40:01 +00:00 committed by Ralf Baechle
parent 137f7df8ce
commit 1225eb8252
2 changed files with 7 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/mips/include/asm/ptrace.h
View File

@ -82,7 +82,7 @@ static inline long regs_return_value(struct pt_regs *regs)
#define instruction_pointer(regs) ((regs)->cp0_epc) #define instruction_pointer(regs) ((regs)->cp0_epc)
#define profile_pc(regs) instruction_pointer(regs) #define profile_pc(regs) instruction_pointer(regs)
extern asmlinkage void syscall_trace_enter(struct pt_regs *regs); extern asmlinkage long syscall_trace_enter(struct pt_regs *regs);
extern asmlinkage void syscall_trace_leave(struct pt_regs *regs); extern asmlinkage void syscall_trace_leave(struct pt_regs *regs);
extern void die(const char *, struct pt_regs *) __noreturn; extern void die(const char *, struct pt_regs *) __noreturn;

10
arch/mips/kernel/ptrace.c
View File

@ -662,13 +662,14 @@ long arch_ptrace(struct task_struct *child, long request,
* Notification of system call entry/exit * Notification of system call entry/exit
* - triggered by current->work.syscall_trace * - triggered by current->work.syscall_trace
*/ */
asmlinkage void syscall_trace_enter(struct pt_regs *regs) asmlinkage long syscall_trace_enter(struct pt_regs *regs)
{ {
long syscall = regs->regs[2];
long ret = 0; long ret = 0;
user_exit(); user_exit();
/* do the secure computing check first */ if (secure_computing(syscall) == -1)
secure_computing_strict(regs->regs[2]); return -1;
if (test_thread_flag(TIF_SYSCALL_TRACE) && if (test_thread_flag(TIF_SYSCALL_TRACE) &&
tracehook_report_syscall_entry(regs)) tracehook_report_syscall_entry(regs))
@ -678,9 +679,10 @@ asmlinkage void syscall_trace_enter(struct pt_regs *regs)
trace_sys_enter(regs, regs->regs[2]); trace_sys_enter(regs, regs->regs[2]);
audit_syscall_entry(syscall_get_arch(current, regs), audit_syscall_entry(syscall_get_arch(current, regs),
regs->regs[2], syscall,
regs->regs[4], regs->regs[5], regs->regs[4], regs->regs[5],
regs->regs[6], regs->regs[7]); regs->regs[6], regs->regs[7]);
return syscall;
} }
/* /*