Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal

Pull signal/compat fixes from Al Viro:
 "Fixes for several regressions introduced in the last signal.git pile,
  along with fixing bugs in truncate and ftruncate compat (on just about
  anything biarch at least one of those two had been done wrong)."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal:
  compat: restore timerfd settime and gettime compat syscalls
  [regression] braino in "sparc: convert to ksignal"
  fix compat truncate/ftruncate
  switch lseek to COMPAT_SYSCALL_DEFINE
  lseek() and truncate() on sparc really need sign extension

3 files changed, 28 insertions, 6 deletions

diff --git a/fs/open.c b/fs/open.c
index 62f907e3bc36..e3441f58d2e1 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -30,6 +30,7 @@
 #include <linux/fs_struct.h>
 #include <linux/ima.h>
 #include <linux/dnotify.h>
+#include <linux/compat.h>
 
 #include "internal.h"
 
@@ -140,6 +141,13 @@ SYSCALL_DEFINE2(truncate, const char __user *, path, long, length)
         return do_sys_truncate(path, length);
 }
 
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE2(truncate, const char __user *, path, compat_off_t, length)
+{
+        return do_sys_truncate(path, length);
+}
+#endif
+
 static long do_sys_ftruncate(unsigned int fd, loff_t length, int small)
 {
         struct inode *inode;
@@ -195,6 +203,13 @@ SYSCALL_DEFINE2(ftruncate, unsigned int, fd, unsigned long, length)
         return ret;
 }
 
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE2(ftruncate, unsigned int, fd, compat_ulong_t, length)
+{
+        return do_sys_ftruncate(fd, length, 1);
+}
+#endif
+
 /* LFS versions of truncate are only needed on 32 bit machines */
 #if BITS_PER_LONG == 32
 SYSCALL_DEFINE(truncate64)(const char __user * path, loff_t length)
diff --git a/fs/read_write.c b/fs/read_write.c
index 3ae6dbe828bf..a698eff457fb 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -15,6 +15,7 @@
 #include <linux/syscalls.h>
 #include <linux/pagemap.h>
 #include <linux/splice.h>
+#include <linux/compat.h>
 #include "read_write.h"
 
 #include <asm/uaccess.h>
@@ -247,6 +248,13 @@ SYSCALL_DEFINE3(lseek, unsigned int, fd, off_t, offset, unsigned int, whence)
         return retval;
 }
 
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE3(lseek, unsigned int, fd, compat_off_t, offset, unsigned int, whence)
+{
+        return sys_lseek(fd, offset, whence);
+}
+#endif
+
 #ifdef __ARCH_WANT_SYS_LLSEEK
 SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned long, offset_high,
                 unsigned long, offset_low, loff_t __user *, result,
@@ -278,7 +286,6 @@ out_putf:
 }
 #endif
 
-
 /*
  * rw_verify_area doesn't like huge counts. We limit
  * them to something that fits in "int" so that others
diff --git a/fs/timerfd.c b/fs/timerfd.c
index 0e606b12a59d..32b644f03690 100644
--- a/fs/timerfd.c
+++ b/fs/timerfd.c
@@ -383,10 +383,10 @@ SYSCALL_DEFINE2(timerfd_gettime, int, ufd, struct itimerspec __user *, otmr)
         return copy_to_user(otmr, &kotmr, sizeof(kotmr)) ? -EFAULT: 0;
 }
 
-#ifdef COMPAT
+#ifdef CONFIG_COMPAT
 COMPAT_SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags,
-                const struct itimerspec __user *, utmr,
-                struct itimerspec __user *, otmr)
+                const struct compat_itimerspec __user *, utmr,
+                struct compat_itimerspec __user *, otmr)
 {
         struct itimerspec new, old;
         int ret;
@@ -402,12 +402,12 @@ COMPAT_SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags,
 }
 
 COMPAT_SYSCALL_DEFINE2(timerfd_gettime, int, ufd,
-                struct itimerspec __user *, otmr)
+                struct compat_itimerspec __user *, otmr)
 {
         struct itimerspec kotmr;
         int ret = do_timerfd_gettime(ufd, &kotmr);
         if (ret)
                 return ret;
-        return put_compat_itimerspec(otmr, &t) ? -EFAULT: 0;
+        return put_compat_itimerspec(otmr, &kotmr) ? -EFAULT: 0;
 }
 #endif