[S390] noexec protection

[linux-2.6-omap-h63xx.git] / arch / s390 / kernel / compat_linux.c

diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 2001767e1dc7aa2fa40020f1874f84d3b7055173..666bb6daa148e649d3156aea4b88c65e7c553b3e 100644 (file)
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -69,6 +69,12 @@
 
 #include "compat_linux.h"
 
+long psw_user32_bits   = (PSW_BASE32_BITS | PSW_MASK_DAT | PSW_ASC_HOME |
+                          PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK |
+                          PSW_MASK_PSTATE | PSW_DEFAULT_KEY);
+long psw32_user_bits   = (PSW32_BASE_BITS | PSW32_MASK_DAT | PSW32_ASC_HOME |
+                          PSW32_MASK_IO | PSW32_MASK_EXT | PSW32_MASK_MCHECK |
+                          PSW32_MASK_PSTATE);
  
 /* For this source file, we want overflow handling. */
 
@@ -416,7 +422,7 @@ asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info)
        mm_segment_t old_fs = get_fs ();
        
        set_fs (KERNEL_DS);
-       ret = sys_sysinfo((struct sysinfo __user *) &s);
+       ret = sys_sysinfo((struct sysinfo __force __user *) &s);
        set_fs (old_fs);
        err = put_user (s.uptime, &info->uptime);
        err |= __put_user (s.loads[0], &info->loads[0]);
@@ -445,7 +451,8 @@ asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid,
        mm_segment_t old_fs = get_fs ();
        
        set_fs (KERNEL_DS);
-       ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
+       ret = sys_sched_rr_get_interval(pid,
+                                       (struct timespec __force __user *) &t);
        set_fs (old_fs);
        if (put_compat_timespec(&t, interval))
                return -EFAULT;
@@ -472,8 +479,8 @@ asmlinkage long sys32_rt_sigprocmask(int how, compat_sigset_t __user *set,
        }
        set_fs (KERNEL_DS);
        ret = sys_rt_sigprocmask(how,
-                                set ? (sigset_t __user *) &s : NULL,
-                                oset ? (sigset_t __user *) &s : NULL,
+                                set ? (sigset_t __force __user *) &s : NULL,
+                                oset ? (sigset_t __force __user *) &s : NULL,
                                 sigsetsize);
        set_fs (old_fs);
        if (ret) return ret;
@@ -499,7 +506,7 @@ asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
        mm_segment_t old_fs = get_fs();
                
        set_fs (KERNEL_DS);
-       ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
+       ret = sys_rt_sigpending((sigset_t __force __user *) &s, sigsetsize);
        set_fs (old_fs);
        if (!ret) {
                switch (_NSIG_WORDS) {
@@ -524,7 +531,7 @@ sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo)
        if (copy_siginfo_from_user32(&info, uinfo))
                return -EFAULT;
        set_fs (KERNEL_DS);
-       ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
+       ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __force __user *) &info);
        set_fs (old_fs);
        return ret;
 }
@@ -682,7 +689,7 @@ asmlinkage long sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offse
                
        set_fs(KERNEL_DS);
        ret = sys_sendfile(out_fd, in_fd,
-                          offset ? (off_t __user *) &of : NULL, count);
+                          offset ? (off_t __force __user *) &of : NULL, count);
        set_fs(old_fs);
        
        if (offset && put_user(of, offset))
@@ -703,7 +710,8 @@ asmlinkage long sys32_sendfile64(int out_fd, int in_fd,
                
        set_fs(KERNEL_DS);
        ret = sys_sendfile64(out_fd, in_fd,
-                            offset ? (loff_t __user *) &lof : NULL, count);
+                            offset ? (loff_t __force __user *) &lof : NULL,
+                            count);
        set_fs(old_fs);
        
        if (offset && put_user(lof, offset))
@@ -757,7 +765,9 @@ asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
                            put_user(oldlen, (u32 __user *)compat_ptr(tmp.oldlenp)))
                                error = -EFAULT;
                }
-               copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
+               if (copy_to_user(args->__unused, tmp.__unused,
+                                sizeof(tmp.__unused)))
+                       error = -EFAULT;
        }
        return error;
 }