[COMMITTED] linux/sysipc: Include linux/posix_types.h for __kernel_mode_t

[Adhemerval Zanella]

The posix_types.h (where __kernel_mode_t is defined) is included
implicitly, which might not happen on older kernels.
---
 sysdeps/unix/sysv/linux/msgctl.c | 1 +
 sysdeps/unix/sysv/linux/semctl.c | 1 +
 sysdeps/unix/sysv/linux/shmctl.c | 1 +
 3 files changed, 3 insertions(+)

diff --git a/sysdeps/unix/sysv/linux/msgctl.c b/sysdeps/unix/sysv/linux/msgctl.c
index eb28835b3a..fd46aec1a0 100644
--- a/sysdeps/unix/sysv/linux/msgctl.c
+++ b/sysdeps/unix/sysv/linux/msgctl.c
@@ -21,6 +21,7 @@
 #include <sysdep.h>
 #include <shlib-compat.h>
 #include <errno.h>
+#include <linux/posix_types.h>  /* For __kernel_mode_t.  */
 
 #ifndef DEFAULT_VERSION
 # ifndef __ASSUME_SYSVIPC_BROKEN_MODE_T
diff --git a/sysdeps/unix/sysv/linux/semctl.c b/sysdeps/unix/sysv/linux/semctl.c
index 0a79e8e4f5..30571af49f 100644
--- a/sysdeps/unix/sysv/linux/semctl.c
+++ b/sysdeps/unix/sysv/linux/semctl.c
@@ -22,6 +22,7 @@
 #include <sysdep.h>
 #include <shlib-compat.h>
 #include <errno.h>
+#include <linux/posix_types.h>  /* For __kernel_mode_t.  */
 
 /* Define a `union semun' suitable for Linux here.  */
 union semun
diff --git a/sysdeps/unix/sysv/linux/shmctl.c b/sysdeps/unix/sysv/linux/shmctl.c
index aed9e5260e..f41b359b8b 100644
--- a/sysdeps/unix/sysv/linux/shmctl.c
+++ b/sysdeps/unix/sysv/linux/shmctl.c
@@ -22,6 +22,7 @@
 #include <sysdep.h>
 #include <shlib-compat.h>
 #include <errno.h>
+#include <linux/posix_types.h>  /* For __kernel_mode_t.  */
 
 #ifndef DEFAULT_VERSION
 # ifndef __ASSUME_SYSVIPC_BROKEN_MODE_T
-- 
2.17.1