make SYSCALL_DEFINE<n>-generated wrappers do asmlinkage_protect

... and switch i386 to HAVE_SYSCALL_WRAPPERS, killing open-coded
uses of asmlinkage_protect() in a bunch of syscalls.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 11 insertions, 44 deletions

diff --git a/kernel/uid16.c b/kernel/uid16.c
index d7948eb10225..f6c83d7ef000 100644
--- a/kernel/uid16.c
+++ b/kernel/uid16.c
@@ -18,67 +18,43 @@
 
 SYSCALL_DEFINE3(chown16, const char __user *, filename, old_uid_t, user, old_gid_t, group)
 {
-        long ret = sys_chown(filename, low2highuid(user), low2highgid(group));
-        /* avoid REGPARM breakage on x86: */
-        asmlinkage_protect(3, ret, filename, user, group);
-        return ret;
+        return sys_chown(filename, low2highuid(user), low2highgid(group));
 }
 
 SYSCALL_DEFINE3(lchown16, const char __user *, filename, old_uid_t, user, old_gid_t, group)
 {
-        long ret = sys_lchown(filename, low2highuid(user), low2highgid(group));
-        /* avoid REGPARM breakage on x86: */
-        asmlinkage_protect(3, ret, filename, user, group);
-        return ret;
+        return sys_lchown(filename, low2highuid(user), low2highgid(group));
 }
 
 SYSCALL_DEFINE3(fchown16, unsigned int, fd, old_uid_t, user, old_gid_t, group)
 {
-        long ret = sys_fchown(fd, low2highuid(user), low2highgid(group));
-        /* avoid REGPARM breakage on x86: */
-        asmlinkage_protect(3, ret, fd, user, group);
-        return ret;
+        return sys_fchown(fd, low2highuid(user), low2highgid(group));
 }
 
 SYSCALL_DEFINE2(setregid16, old_gid_t, rgid, old_gid_t, egid)
 {
-        long ret = sys_setregid(low2highgid(rgid), low2highgid(egid));
-        /* avoid REGPARM breakage on x86: */
-        asmlinkage_protect(2, ret, rgid, egid);
-        return ret;
+        return sys_setregid(low2highgid(rgid), low2highgid(egid));
 }
 
 SYSCALL_DEFINE1(setgid16, old_gid_t, gid)
 {
-        long ret = sys_setgid(low2highgid(gid));
-        /* avoid REGPARM breakage on x86: */
-        asmlinkage_protect(1, ret, gid);
-        return ret;
+        return sys_setgid(low2highgid(gid));
 }
 
 SYSCALL_DEFINE2(setreuid16, old_uid_t, ruid, old_uid_t, euid)
 {
-        long ret = sys_setreuid(low2highuid(ruid), low2highuid(euid));
-        /* avoid REGPARM breakage on x86: */
-        asmlinkage_protect(2, ret, ruid, euid);
-        return ret;
+        return sys_setreuid(low2highuid(ruid), low2highuid(euid));
 }
 
 SYSCALL_DEFINE1(setuid16, old_uid_t, uid)
 {
-        long ret = sys_setuid(low2highuid(uid));
-        /* avoid REGPARM breakage on x86: */
-        asmlinkage_protect(1, ret, uid);
-        return ret;
+        return sys_setuid(low2highuid(uid));
 }
 
 SYSCALL_DEFINE3(setresuid16, old_uid_t, ruid, old_uid_t, euid, old_uid_t, suid)
 {
-        long ret = sys_setresuid(low2highuid(ruid), low2highuid(euid),
+        return sys_setresuid(low2highuid(ruid), low2highuid(euid),
                                  low2highuid(suid));
-        /* avoid REGPARM breakage on x86: */
-        asmlinkage_protect(3, ret, ruid, euid, suid);
-        return ret;
 }
 
 SYSCALL_DEFINE3(getresuid16, old_uid_t __user *, ruidp, old_uid_t __user *, euidp, old_uid_t __user *, suidp)
@@ -100,11 +76,8 @@ SYSCALL_DEFINE3(getresuid16, old_uid_t __user *, ruidp, old_uid_t __user *, euid
 
 SYSCALL_DEFINE3(setresgid16, old_gid_t, rgid, old_gid_t, egid, old_gid_t, sgid)
 {
-        long ret = sys_setresgid(low2highgid(rgid), low2highgid(egid),
+        return sys_setresgid(low2highgid(rgid), low2highgid(egid),
                                  low2highgid(sgid));
-        /* avoid REGPARM breakage on x86: */
-        asmlinkage_protect(3, ret, rgid, egid, sgid);
-        return ret;
 }
 
 
@@ -127,18 +100,12 @@ SYSCALL_DEFINE3(getresgid16, old_gid_t __user *, rgidp, old_gid_t __user *, egid
 
 SYSCALL_DEFINE1(setfsuid16, old_uid_t, uid)
 {
-        long ret = sys_setfsuid(low2highuid(uid));
-        /* avoid REGPARM breakage on x86: */
-        asmlinkage_protect(1, ret, uid);
-        return ret;
+        return sys_setfsuid(low2highuid(uid));
 }
 
 SYSCALL_DEFINE1(setfsgid16, old_gid_t, gid)
 {
-        long ret = sys_setfsgid(low2highgid(gid));
-        /* avoid REGPARM breakage on x86: */
-        asmlinkage_protect(1, ret, gid);
-        return ret;
+        return sys_setfsgid(low2highgid(gid));
 }
 
 static int groups16_to_user(old_gid_t __user *grouplist,