ipc/compat: convert to COMPAT_SYSCALL_DEFINE with changing parameter types

In order to allow the COMPAT_SYSCALL_DEFINE macro generate code that
performs proper zero and sign extension convert all 64 bit parameters
to their corresponding 32 bit compat counterparts.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

diff --git a/include/linux/compat.h b/include/linux/compat.h
index fea8ee9afe2220ba3b0044ead83a1e311ea87855..f670e591aff84653b96982d5a981b61f5548a69f 100644 (file)
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -655,11 +655,11 @@ asmlinkage long compat_sys_mq_open(const char __user *u_name,
                        struct compat_mq_attr __user *u_attr);
 asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
                        const char __user *u_msg_ptr,
-                       size_t msg_len, unsigned int msg_prio,
+                       compat_size_t msg_len, unsigned int msg_prio,
                        const struct compat_timespec __user *u_abs_timeout);
 asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
                        char __user *u_msg_ptr,
-                       size_t msg_len, unsigned int __user *u_msg_prio,
+                       compat_size_t msg_len, unsigned int __user *u_msg_prio,
                        const struct compat_timespec __user *u_abs_timeout);
 asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
 asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);

diff --git a/ipc/compat_mq.c b/ipc/compat_mq.c
index af087fb40bf7406ec1cb7f4b64616544c00b56a4..d5874729377296acc8a95cd0c27b7ab5eb903a76 100644 (file)
--- a/ipc/compat_mq.c
+++ b/ipc/compat_mq.c
@@ -78,10 +78,10 @@ static int compat_prepare_timeout(struct timespec __user **p,
        return 0;
 }
 
-asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
-                       const char __user *u_msg_ptr,
-                       size_t msg_len, unsigned int msg_prio,
-                       const struct compat_timespec __user *u_abs_timeout)
+COMPAT_SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes,
+                      const char __user *, u_msg_ptr,
+                      compat_size_t, msg_len, unsigned int, msg_prio,
+                      const struct compat_timespec __user *, u_abs_timeout)
 {
        struct timespec __user *u_ts;
 
@@ -92,10 +92,10 @@ asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
                        msg_prio, u_ts);
 }
 
-asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
-                       char __user *u_msg_ptr,
-                       size_t msg_len, unsigned int __user *u_msg_prio,
-                       const struct compat_timespec __user *u_abs_timeout)
+COMPAT_SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes,
+                      char __user *, u_msg_ptr,
+                      compat_size_t, msg_len, unsigned int __user *, u_msg_prio,
+                      const struct compat_timespec __user *, u_abs_timeout)
 {
        struct timespec __user *u_ts;
        if (compat_prepare_timeout(&u_ts, u_abs_timeout))