1 files changed, 59 insertions, 0 deletions

diff --git a/kernel/compat.c b/kernel/compat.c
index 8c9cd88b6785..b9bdd1271f44 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -21,6 +21,7 @@
 #include <linux/syscalls.h>
 #include <linux/unistd.h>
 #include <linux/security.h>
+#include <linux/timex.h>
 
 #include <asm/uaccess.h>
 
@@ -898,3 +899,61 @@ asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat
         return -ERESTARTNOHAND;
 }
 #endif /* __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND */
+
+asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp)
+{
+        struct timex txc;
+        int ret;
+
+        memset(&txc, 0, sizeof(struct timex));
+
+        if (!access_ok(VERIFY_READ, utp, sizeof(struct compat_timex)) ||
+                        __get_user(txc.modes, &utp->modes) ||
+                        __get_user(txc.offset, &utp->offset) ||
+                        __get_user(txc.freq, &utp->freq) ||
+                        __get_user(txc.maxerror, &utp->maxerror) ||
+                        __get_user(txc.esterror, &utp->esterror) ||
+                        __get_user(txc.status, &utp->status) ||
+                        __get_user(txc.constant, &utp->constant) ||
+                        __get_user(txc.precision, &utp->precision) ||
+                        __get_user(txc.tolerance, &utp->tolerance) ||
+                        __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
+                        __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
+                        __get_user(txc.tick, &utp->tick) ||
+                        __get_user(txc.ppsfreq, &utp->ppsfreq) ||
+                        __get_user(txc.jitter, &utp->jitter) ||
+                        __get_user(txc.shift, &utp->shift) ||
+                        __get_user(txc.stabil, &utp->stabil) ||
+                        __get_user(txc.jitcnt, &utp->jitcnt) ||
+                        __get_user(txc.calcnt, &utp->calcnt) ||
+                        __get_user(txc.errcnt, &utp->errcnt) ||
+                        __get_user(txc.stbcnt, &utp->stbcnt))
+                return -EFAULT;
+
+        ret = do_adjtimex(&txc);
+
+        if (!access_ok(VERIFY_WRITE, utp, sizeof(struct compat_timex)) ||
+                        __put_user(txc.modes, &utp->modes) ||
+                        __put_user(txc.offset, &utp->offset) ||
+                        __put_user(txc.freq, &utp->freq) ||
+                        __put_user(txc.maxerror, &utp->maxerror) ||
+                        __put_user(txc.esterror, &utp->esterror) ||
+                        __put_user(txc.status, &utp->status) ||
+                        __put_user(txc.constant, &utp->constant) ||
+                        __put_user(txc.precision, &utp->precision) ||
+                        __put_user(txc.tolerance, &utp->tolerance) ||
+                        __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
+                        __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
+                        __put_user(txc.tick, &utp->tick) ||
+                        __put_user(txc.ppsfreq, &utp->ppsfreq) ||
+                        __put_user(txc.jitter, &utp->jitter) ||
+                        __put_user(txc.shift, &utp->shift) ||
+                        __put_user(txc.stabil, &utp->stabil) ||
+                        __put_user(txc.jitcnt, &utp->jitcnt) ||
+                        __put_user(txc.calcnt, &utp->calcnt) ||
+                        __put_user(txc.errcnt, &utp->errcnt) ||
+                        __put_user(txc.stbcnt, &utp->stbcnt))
+                ret = -EFAULT;
+
+        return ret;
+}