[PATCH v2 net-next 2/3] kernel: Make compat bitmap functions externally visible

[Tom Herbert]

Export compat_get_bitmap and compat_put_bitmap. Make
compat_get_user_cpu_mask not static, add prototype in compat.h, and
export it.

Signed-off-by: Tom Herbert <t...@herbertland.com>
---
 include/linux/compat.h | 2 ++
 kernel/compat.c        | 7 +++++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/include/linux/compat.h b/include/linux/compat.h
index ab25814..b52bc0c 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -380,6 +380,8 @@ long compat_get_bitmap(unsigned long *mask, const 
compat_ulong_t __user *umask,
                       unsigned long bitmap_size);
 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
                       unsigned long bitmap_size);
+int compat_get_user_cpu_mask(compat_ulong_t __user *user_mask_ptr,
+                            unsigned len, struct cpumask *new_mask);
 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user 
*from);
 int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t 
*from);
 int get_compat_sigevent(struct sigevent *event,
diff --git a/kernel/compat.c b/kernel/compat.c
index 24f0061..0b74ad9 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -599,8 +599,8 @@ COMPAT_SYSCALL_DEFINE5(waitid,
        return copy_siginfo_to_user32(uinfo, &info);
 }
 
-static int compat_get_user_cpu_mask(compat_ulong_t __user *user_mask_ptr,
-                                   unsigned len, struct cpumask *new_mask)
+int compat_get_user_cpu_mask(compat_ulong_t __user *user_mask_ptr,
+                            unsigned len, struct cpumask *new_mask)
 {
        unsigned long *k;
 
@@ -612,6 +612,7 @@ static int compat_get_user_cpu_mask(compat_ulong_t __user 
*user_mask_ptr,
        k = cpumask_bits(new_mask);
        return compat_get_bitmap(k, user_mask_ptr, len * 8);
 }
+EXPORT_SYMBOL_GPL(compat_get_user_cpu_mask);
 
 COMPAT_SYSCALL_DEFINE3(sched_setaffinity, compat_pid_t, pid,
                       unsigned int, len,
@@ -927,6 +928,7 @@ long compat_get_bitmap(unsigned long *mask, const 
compat_ulong_t __user *umask,
 
        return 0;
 }
+EXPORT_SYMBOL_GPL(compat_get_bitmap);
 
 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
                       unsigned long bitmap_size)
@@ -967,6 +969,7 @@ long compat_put_bitmap(compat_ulong_t __user *umask, 
unsigned long *mask,
 
        return 0;
 }
+EXPORT_SYMBOL_GPL(compat_put_bitmap);
 
 void
 sigset_from_compat(sigset_t *set, const compat_sigset_t *compat)
-- 
1.8.1

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