diff options
Diffstat (limited to 'arch/mips/kernel/ptrace.c')
| -rw-r--r-- | arch/mips/kernel/ptrace.c | 64 |
1 files changed, 35 insertions, 29 deletions
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c index 893e7bccf22..58aa6fec114 100644 --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -20,11 +20,11 @@ #include <linux/mm.h> #include <linux/errno.h> #include <linux/ptrace.h> -#include <linux/audit.h> #include <linux/smp.h> #include <linux/user.h> #include <linux/security.h> -#include <linux/signal.h> +#include <linux/audit.h> +#include <linux/seccomp.h> #include <asm/byteorder.h> #include <asm/cpu.h> @@ -54,7 +54,7 @@ void ptrace_disable(struct task_struct *child) * for 32-bit kernels and for 32-bit processes on a 64-bit kernel. * Registers are sign extended to fill the available space. */ -int ptrace_getregs (struct task_struct *child, __s64 __user *data) +int ptrace_getregs(struct task_struct *child, __s64 __user *data) { struct pt_regs *regs; int i; @@ -65,13 +65,13 @@ int ptrace_getregs (struct task_struct *child, __s64 __user *data) regs = task_pt_regs(child); for (i = 0; i < 32; i++) - __put_user (regs->regs[i], data + i); - __put_user (regs->lo, data + EF_LO - EF_R0); - __put_user (regs->hi, data + EF_HI - EF_R0); - __put_user (regs->cp0_epc, data + EF_CP0_EPC - EF_R0); - __put_user (regs->cp0_badvaddr, data + EF_CP0_BADVADDR - EF_R0); - __put_user (regs->cp0_status, data + EF_CP0_STATUS - EF_R0); - __put_user (regs->cp0_cause, data + EF_CP0_CAUSE - EF_R0); + __put_user(regs->regs[i], data + i); + __put_user(regs->lo, data + EF_LO - EF_R0); + __put_user(regs->hi, data + EF_HI - EF_R0); + __put_user(regs->cp0_epc, data + EF_CP0_EPC - EF_R0); + __put_user(regs->cp0_badvaddr, data + EF_CP0_BADVADDR - EF_R0); + __put_user(regs->cp0_status, data + EF_CP0_STATUS - EF_R0); + __put_user(regs->cp0_cause, data + EF_CP0_CAUSE - EF_R0); return 0; } @@ -81,7 +81,7 @@ int ptrace_getregs (struct task_struct *child, __s64 __user *data) * the 64-bit format. On a 32-bit kernel only the lower order half * (according to endianness) will be used. */ -int ptrace_setregs (struct task_struct *child, __s64 __user *data) +int ptrace_setregs(struct task_struct *child, __s64 __user *data) { struct pt_regs *regs; int i; @@ -92,17 +92,17 @@ int ptrace_setregs (struct task_struct *child, __s64 __user *data) regs = task_pt_regs(child); for (i = 0; i < 32; i++) - __get_user (regs->regs[i], data + i); - __get_user (regs->lo, data + EF_LO - EF_R0); - __get_user (regs->hi, data + EF_HI - EF_R0); - __get_user (regs->cp0_epc, data + EF_CP0_EPC - EF_R0); + __get_user(regs->regs[i], data + i); + __get_user(regs->lo, data + EF_LO - EF_R0); + __get_user(regs->hi, data + EF_HI - EF_R0); + __get_user(regs->cp0_epc, data + EF_CP0_EPC - EF_R0); /* badvaddr, status, and cause may not be written. */ return 0; } -int ptrace_getfpregs (struct task_struct *child, __u32 __user *data) +int ptrace_getfpregs(struct task_struct *child, __u32 __user *data) { int i; unsigned int tmp; @@ -113,13 +113,13 @@ int ptrace_getfpregs (struct task_struct *child, __u32 __user *data) if (tsk_used_math(child)) { fpureg_t *fregs = get_fpu_regs(child); for (i = 0; i < 32; i++) - __put_user (fregs[i], i + (__u64 __user *) data); + __put_user(fregs[i], i + (__u64 __user *) data); } else { for (i = 0; i < 32; i++) - __put_user ((__u64) -1, i + (__u64 __user *) data); + __put_user((__u64) -1, i + (__u64 __user *) data); } - __put_user (child->thread.fpu.fcr31, data + 64); + __put_user(child->thread.fpu.fcr31, data + 64); preempt_disable(); if (cpu_has_fpu) { @@ -142,12 +142,12 @@ int ptrace_getfpregs (struct task_struct *child, __u32 __user *data) tmp = 0; } preempt_enable(); - __put_user (tmp, data + 65); + __put_user(tmp, data + 65); return 0; } -int ptrace_setfpregs (struct task_struct *child, __u32 __user *data) +int ptrace_setfpregs(struct task_struct *child, __u32 __user *data) { fpureg_t *fregs; int i; @@ -158,9 +158,9 @@ int ptrace_setfpregs (struct task_struct *child, __u32 __user *data) fregs = get_fpu_regs(child); for (i = 0; i < 32; i++) - __get_user (fregs[i], i + (__u64 __user *) data); + __get_user(fregs[i], i + (__u64 __user *) data); - __get_user (child->thread.fpu.fcr31, data + 64); + __get_user(child->thread.fpu.fcr31, data + 64); /* FIR may not be written. */ @@ -390,19 +390,19 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) } case PTRACE_GETREGS: - ret = ptrace_getregs (child, (__u64 __user *) data); + ret = ptrace_getregs(child, (__u64 __user *) data); break; case PTRACE_SETREGS: - ret = ptrace_setregs (child, (__u64 __user *) data); + ret = ptrace_setregs(child, (__u64 __user *) data); break; case PTRACE_GETFPREGS: - ret = ptrace_getfpregs (child, (__u32 __user *) data); + ret = ptrace_getfpregs(child, (__u32 __user *) data); break; case PTRACE_SETFPREGS: - ret = ptrace_setfpregs (child, (__u32 __user *) data); + ret = ptrace_setfpregs(child, (__u32 __user *) data); break; case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */ @@ -470,12 +470,17 @@ static inline int audit_arch(void) */ asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit) { + /* do the secure computing check first */ + if (!entryexit) + secure_computing(regs->regs[0]); + if (unlikely(current->audit_context) && entryexit) audit_syscall_exit(AUDITSC_RESULT(regs->regs[2]), regs->regs[2]); if (!(current->ptrace & PT_PTRACED)) goto out; + if (!test_thread_flag(TIF_SYSCALL_TRACE)) goto out; @@ -493,9 +498,10 @@ asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit) send_sig(current->exit_code, current, 1); current->exit_code = 0; } - out: + +out: if (unlikely(current->audit_context) && !entryexit) - audit_syscall_entry(audit_arch(), regs->regs[2], + audit_syscall_entry(audit_arch(), regs->regs[0], regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]); } |