Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

[pandora-kernel.git] / arch / sparc64 / kernel / sys_sparc.c

diff --git a/arch/sparc64/kernel/sys_sparc.c b/arch/sparc64/kernel/sys_sparc.c
index 7a86913..c608c94 100644 (file)
--- a/arch/sparc64/kernel/sys_sparc.c
+++ b/arch/sparc64/kernel/sys_sparc.c
@@ -6,7 +6,6 @@
  * platform.
  */
 
-#include <linux/config.h>
 #include <linux/errno.h>
 #include <linux/types.h>
 #include <linux/sched.h>
@@ -549,6 +548,26 @@ asmlinkage long sparc64_personality(unsigned long personality)
        return ret;
 }
 
+int sparc64_mmap_check(unsigned long addr, unsigned long len,
+               unsigned long flags)
+{
+       if (test_thread_flag(TIF_32BIT)) {
+               if (len >= STACK_TOP32)
+                       return -EINVAL;
+
+               if ((flags & MAP_FIXED) && addr > STACK_TOP32 - len)
+                       return -EINVAL;
+       } else {
+               if (len >= VA_EXCLUDE_START)
+                       return -EINVAL;
+
+               if ((flags & MAP_FIXED) && invalid_64bit_range(addr, len))
+                       return -EINVAL;
+       }
+
+       return 0;
+}
+
 /* Linux version of mmap */
 asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
        unsigned long prot, unsigned long flags, unsigned long fd,
@@ -564,27 +583,11 @@ asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
        }
        flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
        len = PAGE_ALIGN(len);
-       retval = -EINVAL;
-
-       if (test_thread_flag(TIF_32BIT)) {
-               if (len >= STACK_TOP32)
-                       goto out_putf;
-
-               if ((flags & MAP_FIXED) && addr > STACK_TOP32 - len)
-                       goto out_putf;
-       } else {
-               if (len >= VA_EXCLUDE_START)
-                       goto out_putf;
-
-               if ((flags & MAP_FIXED) && invalid_64bit_range(addr, len))
-                       goto out_putf;
-       }
 
        down_write(&current->mm->mmap_sem);
        retval = do_mmap(file, addr, len, prot, flags, off);
        up_write(&current->mm->mmap_sem);
 
-out_putf:
        if (file)
                fput(file);
 out:
@@ -702,21 +705,23 @@ extern void check_pending(int signum);
 
 asmlinkage long sys_getdomainname(char __user *name, int len)
 {
-        int nlen;
-       int err = -EFAULT;
+        int nlen, err;
+
+       if (len < 0)
+               return -EINVAL;
 
        down_read(&uts_sem);
        
        nlen = strlen(system_utsname.domainname) + 1;
+       err = -EINVAL;
+       if (nlen > len)
+               goto out;
 
-        if (nlen < len)
-                len = nlen;
-       if (len > __NEW_UTS_LEN)
-               goto done;
-       if (copy_to_user(name, system_utsname.domainname, len))
-               goto done;
-       err = 0;
-done:
+       err = -EFAULT;
+       if (!copy_to_user(name, system_utsname.domainname, nlen))
+               err = 0;
+
+out:
        up_read(&uts_sem);
        return err;
 }