netns xfrm: fix "ip xfrm state|policy count" misreport

[safe/jmp/linux-2.6] / kernel / compat.c

diff --git a/kernel/compat.c b/kernel/compat.c
index 8eafe3e..f6c204f 100644 (file)
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -24,6 +24,7 @@
 #include <linux/migrate.h>
 #include <linux/posix-timers.h>
 #include <linux/times.h>
+#include <linux/ptrace.h>
 
 #include <asm/uaccess.h>
 
@@ -229,6 +230,7 @@ asmlinkage long compat_sys_times(struct compat_tms __user *tbuf)
                if (copy_to_user(tbuf, &tmp, sizeof(tmp)))
                        return -EFAULT;
        }
+       force_successful_syscall_return();
        return compat_jiffies_to_clock_t(jiffies);
 }
 
@@ -454,16 +456,16 @@ asmlinkage long compat_sys_waitid(int which, compat_pid_t pid,
 }
 
 static int compat_get_user_cpu_mask(compat_ulong_t __user *user_mask_ptr,
-                                   unsigned len, cpumask_t *new_mask)
+                                   unsigned len, struct cpumask *new_mask)
 {
        unsigned long *k;
 
-       if (len < sizeof(cpumask_t))
-               memset(new_mask, 0, sizeof(cpumask_t));
-       else if (len > sizeof(cpumask_t))
-               len = sizeof(cpumask_t);
+       if (len < cpumask_size())
+               memset(new_mask, 0, cpumask_size());
+       else if (len > cpumask_size())
+               len = cpumask_size();
 
-       k = cpus_addr(*new_mask);
+       k = cpumask_bits(new_mask);
        return compat_get_bitmap(k, user_mask_ptr, len * 8);
 }
 
@@ -471,40 +473,51 @@ asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
                                             unsigned int len,
                                             compat_ulong_t __user *user_mask_ptr)
 {
-       cpumask_t new_mask;
+       cpumask_var_t new_mask;
        int retval;
 
-       retval = compat_get_user_cpu_mask(user_mask_ptr, len, &new_mask);
+       if (!alloc_cpumask_var(&new_mask, GFP_KERNEL))
+               return -ENOMEM;
+
+       retval = compat_get_user_cpu_mask(user_mask_ptr, len, new_mask);
        if (retval)
-               return retval;
+               goto out;
 
-       return sched_setaffinity(pid, &new_mask);
+       retval = sched_setaffinity(pid, new_mask);
+out:
+       free_cpumask_var(new_mask);
+       return retval;
 }
 
 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, unsigned int len,
                                             compat_ulong_t __user *user_mask_ptr)
 {
        int ret;
-       cpumask_t mask;
+       cpumask_var_t mask;
        unsigned long *k;
-       unsigned int min_length = sizeof(cpumask_t);
+       unsigned int min_length = cpumask_size();
 
-       if (NR_CPUS <= BITS_PER_COMPAT_LONG)
+       if (nr_cpu_ids <= BITS_PER_COMPAT_LONG)
                min_length = sizeof(compat_ulong_t);
 
        if (len < min_length)
                return -EINVAL;
 
-       ret = sched_getaffinity(pid, &mask);
+       if (!alloc_cpumask_var(&mask, GFP_KERNEL))
+               return -ENOMEM;
+
+       ret = sched_getaffinity(pid, mask);
        if (ret < 0)
-               return ret;
+               goto out;
 
-       k = cpus_addr(mask);
+       k = cpumask_bits(mask);
        ret = compat_put_bitmap(user_mask_ptr, k, min_length * 8);
-       if (ret)
-               return ret;
+       if (ret == 0)
+               ret = min_length;
 
-       return min_length;
+out:
+       free_cpumask_var(mask);
+       return ret;
 }
 
 int get_compat_itimerspec(struct itimerspec *dst,
@@ -869,6 +882,17 @@ compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese,
 
 }
 
+asmlinkage long
+compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
+                            struct compat_siginfo __user *uinfo)
+{
+       siginfo_t info;
+
+       if (copy_siginfo_from_user32(&info, uinfo))
+               return -EFAULT;
+       return do_rt_tgsigqueueinfo(tgid, pid, sig, &info);
+}
+
 #ifdef __ARCH_WANT_COMPAT_SYS_TIME
 
 /* compat_time_t is a 32 bit "long" and needs to get converted. */
@@ -883,8 +907,9 @@ asmlinkage long compat_sys_time(compat_time_t __user * tloc)
 
        if (tloc) {
                if (put_user(i,tloc))
-                       i = -EFAULT;
+                       return -EFAULT;
        }
+       force_successful_syscall_return();
        return i;
 }