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authorAl Viro <viro@zeniv.linux.org.uk>2013-01-21 15:25:54 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2013-03-03 22:58:33 -0500
commit2cf0966683430b6468f36ca20515a33ca7f2403c (patch)
tree902080486ebd7988d1250914c3809c4de472a22b /kernel
parent22d1a35da0e247a006c286842a1846acb4ffed4f (diff)
downloadlinux-sh-2cf0966683430b6468f36ca20515a33ca7f2403c.tar.gz
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>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/exit.c5
-rw-r--r--kernel/fork.c5
-rw-r--r--kernel/uid16.c55
3 files changed, 12 insertions, 53 deletions
diff --git a/kernel/exit.c b/kernel/exit.c
index 51e485ca9935..25d0108d7452 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1629,9 +1629,6 @@ SYSCALL_DEFINE5(waitid, int, which, pid_t, upid, struct siginfo __user *,
}
put_pid(pid);
-
- /* avoid REGPARM breakage on x86: */
- asmlinkage_protect(5, ret, which, upid, infop, options, ru);
return ret;
}
@@ -1669,8 +1666,6 @@ SYSCALL_DEFINE4(wait4, pid_t, upid, int __user *, stat_addr,
ret = do_wait(&wo);
put_pid(pid);
- /* avoid REGPARM breakage on x86: */
- asmlinkage_protect(4, ret, upid, stat_addr, options, ru);
return ret;
}
diff --git a/kernel/fork.c b/kernel/fork.c
index 8d932b1c9056..e1f34abe5887 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1674,10 +1674,7 @@ SYSCALL_DEFINE5(clone, unsigned long, clone_flags, unsigned long, newsp,
int, tls_val)
#endif
{
- long ret = do_fork(clone_flags, newsp, 0, parent_tidptr, child_tidptr);
- asmlinkage_protect(5, ret, clone_flags, newsp,
- parent_tidptr, child_tidptr, tls_val);
- return ret;
+ return do_fork(clone_flags, newsp, 0, parent_tidptr, child_tidptr);
}
#endif
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,