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authorThomas Gleixner <tglx@linutronix.de>2019-02-10 20:44:19 +0100
committerThomas Gleixner <tglx@linutronix.de>2019-02-10 20:44:19 +0100
commitfd659cc095af9cc103e7a2a6448e8bb027035e40 (patch)
tree3cc147fd2180371bfa84a0688e00f5220b874ee2 /arch/s390
parent74e96711e3379fc66630f2a1d184947f80cf2c48 (diff)
parent805089c2f77047d81f47ddc227435d606ceb180e (diff)
downloadlinux-fd659cc095af9cc103e7a2a6448e8bb027035e40.tar.bz2
Merge tag 'y2038-syscall-cleanup' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground into timers/2038
Pull preparatory work for y2038 changes from Arnd Bergmann: System call unification and cleanup The system call tables have diverged a bit over the years, and a number of the recent additions never made it into all architectures, for one reason or another. This is an attempt to clean it up as far as we can without breaking compatibility, doing a number of steps: - Add system calls that have not yet been integrated into all architectures but that we definitely want there. This includes {,f}statfs64() and get{eg,eu,g,p,u,pp}id() on alpha, which have been missing traditionally. - The s390 compat syscall handling is cleaned up to be more like what we do on other architectures, while keeping the 31-bit pointer extension. This was merged as a shared branch by the s390 maintainers and is included here in order to base the other patches on top. - Add the separate ipc syscalls on all architectures that traditionally only had sys_ipc(). This version is done without support for IPC_OLD that is we have in sys_ipc. The new semtimedop_time64 syscall will only be added here, not in sys_ipc - Add syscall numbers for a couple of syscalls that we probably don't need everywhere, in particular pkey_* and rseq, for the purpose of symmetry: if it's in asm-generic/unistd.h, it makes sense to have it everywhere. I expect that any future system calls will get assigned on all platforms together, even when they appear to be specific to a single architecture. - Prepare for having the same system call numbers for any future calls. In combination with the generated tables, this hopefully makes it easier to add new calls across all architectures together. All of the above are technically separate from the y2038 work, but are done as preparation before we add the new 64-bit time_t system calls everywhere, providing a common baseline set of system calls. I expect that glibc and other libraries that want to use 64-bit time_t will require linux-5.1 kernel headers for building in the future, and at a much later point may also require linux-5.1 or a later version as the minimum kernel at runtime. Having a common baseline then allows the removal of many architecture or kernel version specific workarounds.
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/Kconfig2
-rw-r--r--arch/s390/include/asm/syscall_wrapper.h135
-rw-r--r--arch/s390/include/asm/unistd.h5
-rw-r--r--arch/s390/include/uapi/asm/posix_types.h6
-rw-r--r--arch/s390/kernel/Makefile2
-rw-r--r--arch/s390/kernel/compat_linux.c235
-rw-r--r--arch/s390/kernel/compat_wrapper.c186
-rw-r--r--arch/s390/kernel/entry.S4
-rw-r--r--arch/s390/kernel/sys_s390.c16
-rw-r--r--arch/s390/kernel/syscalls/syscall.tbl301
10 files changed, 318 insertions, 574 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index ed554b09eb3f..b6e3d0653002 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -75,6 +75,7 @@ config S390
select ARCH_HAS_SET_MEMORY
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_STRICT_MODULE_RWX
+ select ARCH_HAS_SYSCALL_WRAPPER
select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_INLINE_READ_LOCK
@@ -379,6 +380,7 @@ config COMPAT
select COMPAT_BINFMT_ELF if BINFMT_ELF
select ARCH_WANT_OLD_COMPAT_IPC
select COMPAT_OLD_SIGACTION
+ select HAVE_UID16
depends on MULTIUSER
help
Select this option if you want to enable your system kernel to
diff --git a/arch/s390/include/asm/syscall_wrapper.h b/arch/s390/include/asm/syscall_wrapper.h
new file mode 100644
index 000000000000..5596c5c625d2
--- /dev/null
+++ b/arch/s390/include/asm/syscall_wrapper.h
@@ -0,0 +1,135 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * syscall_wrapper.h - s390 specific wrappers to syscall definitions
+ *
+ */
+
+#ifndef _ASM_S390_SYSCALL_WRAPPER_H
+#define _ASM_S390_SYSCALL_WRAPPER_H
+
+#ifdef CONFIG_COMPAT
+#define __SC_COMPAT_TYPE(t, a) \
+ __typeof(__builtin_choose_expr(sizeof(t) > 4, 0L, (t)0)) a
+
+#define __SC_COMPAT_CAST(t, a) \
+({ \
+ long __ReS = a; \
+ \
+ BUILD_BUG_ON((sizeof(t) > 4) && !__TYPE_IS_L(t) && \
+ !__TYPE_IS_UL(t) && !__TYPE_IS_PTR(t) && \
+ !__TYPE_IS_LL(t)); \
+ if (__TYPE_IS_L(t)) \
+ __ReS = (s32)a; \
+ if (__TYPE_IS_UL(t)) \
+ __ReS = (u32)a; \
+ if (__TYPE_IS_PTR(t)) \
+ __ReS = a & 0x7fffffff; \
+ if (__TYPE_IS_LL(t)) \
+ return -ENOSYS; \
+ (t)__ReS; \
+})
+
+#define __S390_SYS_STUBx(x, name, ...) \
+ asmlinkage long __s390_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
+ ALLOW_ERROR_INJECTION(__s390_sys##name, ERRNO); \
+ asmlinkage long __s390_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
+ { \
+ long ret = __s390x_sys##name(__MAP(x,__SC_COMPAT_CAST,__VA_ARGS__));\
+ __MAP(x,__SC_TEST,__VA_ARGS__); \
+ return ret; \
+ }
+
+/*
+ * To keep the naming coherent, re-define SYSCALL_DEFINE0 to create an alias
+ * named __s390x_sys_*()
+ */
+#define COMPAT_SYSCALL_DEFINE0(sname) \
+ SYSCALL_METADATA(_##sname, 0); \
+ asmlinkage long __s390_compat_sys_##sname(void); \
+ ALLOW_ERROR_INJECTION(__s390_compat__sys_##sname, ERRNO); \
+ asmlinkage long __s390_compat_sys_##sname(void)
+
+#define SYSCALL_DEFINE0(sname) \
+ SYSCALL_METADATA(_##sname, 0); \
+ asmlinkage long __s390x_sys_##sname(void); \
+ ALLOW_ERROR_INJECTION(__s390x_sys_##sname, ERRNO); \
+ asmlinkage long __s390_sys_##sname(void) \
+ __attribute__((alias(__stringify(__s390x_sys_##sname)))); \
+ asmlinkage long __s390x_sys_##sname(void)
+
+#define COND_SYSCALL(name) \
+ cond_syscall(__s390x_sys_##name); \
+ cond_syscall(__s390_sys_##name)
+
+#define SYS_NI(name) \
+ SYSCALL_ALIAS(__s390x_sys_##name, sys_ni_posix_timers); \
+ SYSCALL_ALIAS(__s390_sys_##name, sys_ni_posix_timers)
+
+#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \
+ __diag_push(); \
+ __diag_ignore(GCC, 8, "-Wattribute-alias", \
+ "Type aliasing is used to sanitize syscall arguments");\
+ asmlinkage long __s390_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
+ asmlinkage long __s390_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
+ __attribute__((alias(__stringify(__se_compat_sys##name)))); \
+ ALLOW_ERROR_INJECTION(compat_sys##name, ERRNO); \
+ static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
+ asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
+ asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
+ { \
+ long ret = __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));\
+ __MAP(x,__SC_TEST,__VA_ARGS__); \
+ return ret; \
+ } \
+ __diag_pop(); \
+ static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
+
+/*
+ * As some compat syscalls may not be implemented, we need to expand
+ * COND_SYSCALL_COMPAT in kernel/sys_ni.c and COMPAT_SYS_NI in
+ * kernel/time/posix-stubs.c to cover this case as well.
+ */
+#define COND_SYSCALL_COMPAT(name) \
+ cond_syscall(__s390_compat_sys_##name)
+
+#define COMPAT_SYS_NI(name) \
+ SYSCALL_ALIAS(__s390_compat_sys_##name, sys_ni_posix_timers)
+
+#else /* CONFIG_COMPAT */
+
+#define __S390_SYS_STUBx(x, fullname, name, ...)
+
+#define SYSCALL_DEFINE0(sname) \
+ SYSCALL_METADATA(_##sname, 0); \
+ asmlinkage long __s390x_sys_##sname(void); \
+ ALLOW_ERROR_INJECTION(__s390x_sys_##sname, ERRNO); \
+ asmlinkage long __s390x_sys_##sname(void)
+
+#define COND_SYSCALL(name) \
+ cond_syscall(__s390x_sys_##name)
+
+#define SYS_NI(name) \
+ SYSCALL_ALIAS(__s390x_sys_##name, sys_ni_posix_timers);
+
+#endif /* CONFIG_COMPAT */
+
+#define __SYSCALL_DEFINEx(x, name, ...) \
+ __diag_push(); \
+ __diag_ignore(GCC, 8, "-Wattribute-alias", \
+ "Type aliasing is used to sanitize syscall arguments");\
+ asmlinkage long __s390x_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
+ __attribute__((alias(__stringify(__se_sys##name)))); \
+ ALLOW_ERROR_INJECTION(__s390x_sys##name, ERRNO); \
+ static long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
+ static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
+ __S390_SYS_STUBx(x, name, __VA_ARGS__) \
+ asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
+ { \
+ long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \
+ __MAP(x,__SC_TEST,__VA_ARGS__); \
+ return ret; \
+ } \
+ __diag_pop(); \
+ static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
+
+#endif /* _ASM_X86_SYSCALL_WRAPPER_H */
diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h
index a1fbf15d53aa..59202ceea1f6 100644
--- a/arch/s390/include/asm/unistd.h
+++ b/arch/s390/include/asm/unistd.h
@@ -10,11 +10,6 @@
#include <uapi/asm/unistd.h>
#include <asm/unistd_nr.h>
-#define __IGNORE_time
-#define __IGNORE_pkey_mprotect
-#define __IGNORE_pkey_alloc
-#define __IGNORE_pkey_free
-
#define __ARCH_WANT_NEW_STAT
#define __ARCH_WANT_OLD_READDIR
#define __ARCH_WANT_SYS_ALARM
diff --git a/arch/s390/include/uapi/asm/posix_types.h b/arch/s390/include/uapi/asm/posix_types.h
index 2a3fc638414b..1913613e71b6 100644
--- a/arch/s390/include/uapi/asm/posix_types.h
+++ b/arch/s390/include/uapi/asm/posix_types.h
@@ -20,6 +20,12 @@ typedef long __kernel_ssize_t;
typedef unsigned short __kernel_old_dev_t;
#define __kernel_old_dev_t __kernel_old_dev_t
+#ifdef __KERNEL__
+typedef unsigned short __kernel_old_uid_t;
+typedef unsigned short __kernel_old_gid_t;
+#define __kernel_old_uid_t __kernel_old_uid_t
+#endif
+
#ifndef __s390x__
typedef unsigned long __kernel_ino_t;
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index e216e116a9a9..4e188a7be501 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -65,7 +65,7 @@ obj-$(CONFIG_HIBERNATION) += suspend.o swsusp.o
obj-$(CONFIG_AUDIT) += audit.o
compat-obj-$(CONFIG_AUDIT) += compat_audit.o
obj-$(CONFIG_COMPAT) += compat_linux.o compat_signal.o
-obj-$(CONFIG_COMPAT) += compat_wrapper.o $(compat-obj-y)
+obj-$(CONFIG_COMPAT) += $(compat-obj-y)
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-$(CONFIG_KPROBES) += kprobes.o
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 8ac38d51ed7d..f9d418d1b619 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -34,7 +34,6 @@
#include <linux/stat.h>
#include <linux/filter.h>
#include <linux/highmem.h>
-#include <linux/highuid.h>
#include <linux/mman.h>
#include <linux/ipv6.h>
#include <linux/in.h>
@@ -58,245 +57,13 @@
#include "compat_linux.h"
-/* For this source file, we want overflow handling. */
-
-#undef high2lowuid
-#undef high2lowgid
-#undef low2highuid
-#undef low2highgid
-#undef SET_UID16
-#undef SET_GID16
-#undef NEW_TO_OLD_UID
-#undef NEW_TO_OLD_GID
-#undef SET_OLDSTAT_UID
-#undef SET_OLDSTAT_GID
-#undef SET_STAT_UID
-#undef SET_STAT_GID
-
-#define high2lowuid(uid) ((uid) > 65535) ? (u16)overflowuid : (u16)(uid)
-#define high2lowgid(gid) ((gid) > 65535) ? (u16)overflowgid : (u16)(gid)
-#define low2highuid(uid) ((uid) == (u16)-1) ? (uid_t)-1 : (uid_t)(uid)
-#define low2highgid(gid) ((gid) == (u16)-1) ? (gid_t)-1 : (gid_t)(gid)
-#define SET_UID16(var, uid) var = high2lowuid(uid)
-#define SET_GID16(var, gid) var = high2lowgid(gid)
-#define NEW_TO_OLD_UID(uid) high2lowuid(uid)
-#define NEW_TO_OLD_GID(gid) high2lowgid(gid)
-#define SET_OLDSTAT_UID(stat, uid) (stat).st_uid = high2lowuid(uid)
-#define SET_OLDSTAT_GID(stat, gid) (stat).st_gid = high2lowgid(gid)
-#define SET_STAT_UID(stat, uid) (stat).st_uid = high2lowuid(uid)
-#define SET_STAT_GID(stat, gid) (stat).st_gid = high2lowgid(gid)
-
-COMPAT_SYSCALL_DEFINE3(s390_chown16, const char __user *, filename,
- u16, user, u16, group)
-{
- return ksys_chown(filename, low2highuid(user), low2highgid(group));
-}
-
-COMPAT_SYSCALL_DEFINE3(s390_lchown16, const char __user *,
- filename, u16, user, u16, group)
-{
- return ksys_lchown(filename, low2highuid(user), low2highgid(group));
-}
-
-COMPAT_SYSCALL_DEFINE3(s390_fchown16, unsigned int, fd, u16, user, u16, group)
-{
- return ksys_fchown(fd, low2highuid(user), low2highgid(group));
-}
-
-COMPAT_SYSCALL_DEFINE2(s390_setregid16, u16, rgid, u16, egid)
-{
- return sys_setregid(low2highgid(rgid), low2highgid(egid));
-}
-
-COMPAT_SYSCALL_DEFINE1(s390_setgid16, u16, gid)
-{
- return sys_setgid(low2highgid(gid));
-}
-
-COMPAT_SYSCALL_DEFINE2(s390_setreuid16, u16, ruid, u16, euid)
-{
- return sys_setreuid(low2highuid(ruid), low2highuid(euid));
-}
-
-COMPAT_SYSCALL_DEFINE1(s390_setuid16, u16, uid)
-{
- return sys_setuid(low2highuid(uid));
-}
-
-COMPAT_SYSCALL_DEFINE3(s390_setresuid16, u16, ruid, u16, euid, u16, suid)
-{
- return sys_setresuid(low2highuid(ruid), low2highuid(euid),
- low2highuid(suid));
-}
-
-COMPAT_SYSCALL_DEFINE3(s390_getresuid16, u16 __user *, ruidp,
- u16 __user *, euidp, u16 __user *, suidp)
-{
- const struct cred *cred = current_cred();
- int retval;
- u16 ruid, euid, suid;
-
- ruid = high2lowuid(from_kuid_munged(cred->user_ns, cred->uid));
- euid = high2lowuid(from_kuid_munged(cred->user_ns, cred->euid));
- suid = high2lowuid(from_kuid_munged(cred->user_ns, cred->suid));
-
- if (!(retval = put_user(ruid, ruidp)) &&
- !(retval = put_user(euid, euidp)))
- retval = put_user(suid, suidp);
-
- return retval;
-}
-
-COMPAT_SYSCALL_DEFINE3(s390_setresgid16, u16, rgid, u16, egid, u16, sgid)
-{
- return sys_setresgid(low2highgid(rgid), low2highgid(egid),
- low2highgid(sgid));
-}
-
-COMPAT_SYSCALL_DEFINE3(s390_getresgid16, u16 __user *, rgidp,
- u16 __user *, egidp, u16 __user *, sgidp)
-{
- const struct cred *cred = current_cred();
- int retval;
- u16 rgid, egid, sgid;
-
- rgid = high2lowgid(from_kgid_munged(cred->user_ns, cred->gid));
- egid = high2lowgid(from_kgid_munged(cred->user_ns, cred->egid));
- sgid = high2lowgid(from_kgid_munged(cred->user_ns, cred->sgid));
-
- if (!(retval = put_user(rgid, rgidp)) &&
- !(retval = put_user(egid, egidp)))
- retval = put_user(sgid, sgidp);
-
- return retval;
-}
-
-COMPAT_SYSCALL_DEFINE1(s390_setfsuid16, u16, uid)
-{
- return sys_setfsuid(low2highuid(uid));
-}
-
-COMPAT_SYSCALL_DEFINE1(s390_setfsgid16, u16, gid)
-{
- return sys_setfsgid(low2highgid(gid));
-}
-
-static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info)
-{
- struct user_namespace *user_ns = current_user_ns();
- int i;
- u16 group;
- kgid_t kgid;
-
- for (i = 0; i < group_info->ngroups; i++) {
- kgid = group_info->gid[i];
- group = (u16)from_kgid_munged(user_ns, kgid);
- if (put_user(group, grouplist+i))
- return -EFAULT;
- }
-
- return 0;
-}
-
-static int groups16_from_user(struct group_info *group_info, u16 __user *grouplist)
-{
- struct user_namespace *user_ns = current_user_ns();
- int i;
- u16 group;
- kgid_t kgid;
-
- for (i = 0; i < group_info->ngroups; i++) {
- if (get_user(group, grouplist+i))
- return -EFAULT;
-
- kgid = make_kgid(user_ns, (gid_t)group);
- if (!gid_valid(kgid))
- return -EINVAL;
-
- group_info->gid[i] = kgid;
- }
-
- return 0;
-}
-
-COMPAT_SYSCALL_DEFINE2(s390_getgroups16, int, gidsetsize, u16 __user *, grouplist)
-{
- const struct cred *cred = current_cred();
- int i;
-
- if (gidsetsize < 0)
- return -EINVAL;
-
- get_group_info(cred->group_info);
- i = cred->group_info->ngroups;
- if (gidsetsize) {
- if (i > gidsetsize) {
- i = -EINVAL;
- goto out;
- }
- if (groups16_to_user(grouplist, cred->group_info)) {
- i = -EFAULT;
- goto out;
- }
- }
-out:
- put_group_info(cred->group_info);
- return i;
-}
-
-COMPAT_SYSCALL_DEFINE2(s390_setgroups16, int, gidsetsize, u16 __user *, grouplist)
-{
- struct group_info *group_info;
- int retval;
-
- if (!may_setgroups())
- return -EPERM;
- if ((unsigned)gidsetsize > NGROUPS_MAX)
- return -EINVAL;
-
- group_info = groups_alloc(gidsetsize);
- if (!group_info)
- return -ENOMEM;
- retval = groups16_from_user(group_info, grouplist);
- if (retval) {
- put_group_info(group_info);
- return retval;
- }
-
- groups_sort(group_info);
- retval = set_current_groups(group_info);
- put_group_info(group_info);
-
- return retval;
-}
-
-COMPAT_SYSCALL_DEFINE0(s390_getuid16)
-{
- return high2lowuid(from_kuid_munged(current_user_ns(), current_uid()));
-}
-
-COMPAT_SYSCALL_DEFINE0(s390_geteuid16)
-{
- return high2lowuid(from_kuid_munged(current_user_ns(), current_euid()));
-}
-
-COMPAT_SYSCALL_DEFINE0(s390_getgid16)
-{
- return high2lowgid(from_kgid_munged(current_user_ns(), current_gid()));
-}
-
-COMPAT_SYSCALL_DEFINE0(s390_getegid16)
-{
- return high2lowgid(from_kgid_munged(current_user_ns(), current_egid()));
-}
-
#ifdef CONFIG_SYSVIPC
COMPAT_SYSCALL_DEFINE5(s390_ipc, uint, call, int, first, compat_ulong_t, second,
compat_ulong_t, third, compat_uptr_t, ptr)
{
if (call >> 16) /* hack for backward compatibility */
return -EINVAL;
- return compat_sys_ipc(call, first, second, third, ptr, third);
+ return compat_ksys_ipc(call, first, second, third, ptr, third);
}
#endif
diff --git a/arch/s390/kernel/compat_wrapper.c b/arch/s390/kernel/compat_wrapper.c
deleted file mode 100644
index 48c4ce668244..000000000000
--- a/arch/s390/kernel/compat_wrapper.c
+++ /dev/null
@@ -1,186 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Compat system call wrappers.
- *
- * Copyright IBM Corp. 2014
- */
-
-#include <linux/syscalls.h>
-#include <linux/compat.h>
-#include "entry.h"
-
-#define COMPAT_SYSCALL_WRAP1(name, ...) \
- COMPAT_SYSCALL_WRAPx(1, _##name, __VA_ARGS__)
-#define COMPAT_SYSCALL_WRAP2(name, ...) \
- COMPAT_SYSCALL_WRAPx(2, _##name, __VA_ARGS__)
-#define COMPAT_SYSCALL_WRAP3(name, ...) \
- COMPAT_SYSCALL_WRAPx(3, _##name, __VA_ARGS__)
-#define COMPAT_SYSCALL_WRAP4(name, ...) \
- COMPAT_SYSCALL_WRAPx(4, _##name, __VA_ARGS__)
-#define COMPAT_SYSCALL_WRAP5(name, ...) \
- COMPAT_SYSCALL_WRAPx(5, _##name, __VA_ARGS__)
-#define COMPAT_SYSCALL_WRAP6(name, ...) \
- COMPAT_SYSCALL_WRAPx(6, _##name, __VA_ARGS__)
-
-#define __SC_COMPAT_TYPE(t, a) \
- __typeof(__builtin_choose_expr(sizeof(t) > 4, 0L, (t)0)) a
-
-#define __SC_COMPAT_CAST(t, a) \
-({ \
- long __ReS = a; \
- \
- BUILD_BUG_ON((sizeof(t) > 4) && !__TYPE_IS_L(t) && \
- !__TYPE_IS_UL(t) && !__TYPE_IS_PTR(t)); \
- if (__TYPE_IS_L(t)) \
- __ReS = (s32)a; \
- if (__TYPE_IS_UL(t)) \
- __ReS = (u32)a; \
- if (__TYPE_IS_PTR(t)) \
- __ReS = a & 0x7fffffff; \
- (t)__ReS; \
-})
-
-/*
- * The COMPAT_SYSCALL_WRAP macro generates system call wrappers to be used by
- * compat tasks. These wrappers will only be used for system calls where only
- * the system call arguments need sign or zero extension or zeroing of the upper
- * 33 bits of pointers.
- * Note: since the wrapper function will afterwards call a system call which
- * again performs zero and sign extension for all system call arguments with
- * a size of less than eight bytes, these compat wrappers only touch those
- * system call arguments with a size of eight bytes ((unsigned) long and
- * pointers). Zero and sign extension for e.g. int parameters will be done by
- * the regular system call wrappers.
- */
-#define COMPAT_SYSCALL_WRAPx(x, name, ...) \
-asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
-asmlinkage long notrace compat_sys##name(__MAP(x,__SC_COMPAT_TYPE,__VA_ARGS__));\
-asmlinkage long notrace compat_sys##name(__MAP(x,__SC_COMPAT_TYPE,__VA_ARGS__)) \
-{ \
- return sys##name(__MAP(x,__SC_COMPAT_CAST,__VA_ARGS__)); \
-}
-
-COMPAT_SYSCALL_WRAP2(creat, const char __user *, pathname, umode_t, mode);
-COMPAT_SYSCALL_WRAP2(link, const char __user *, oldname, const char __user *, newname);
-COMPAT_SYSCALL_WRAP1(unlink, const char __user *, pathname);
-COMPAT_SYSCALL_WRAP1(chdir, const char __user *, filename);
-COMPAT_SYSCALL_WRAP3(mknod, const char __user *, filename, umode_t, mode, unsigned, dev);
-COMPAT_SYSCALL_WRAP2(chmod, const char __user *, filename, umode_t, mode);
-COMPAT_SYSCALL_WRAP1(oldumount, char __user *, name);
-COMPAT_SYSCALL_WRAP2(access, const char __user *, filename, int, mode);
-COMPAT_SYSCALL_WRAP2(rename, const char __user *, oldname, const char __user *, newname);
-COMPAT_SYSCALL_WRAP2(mkdir, const char __user *, pathname, umode_t, mode);
-COMPAT_SYSCALL_WRAP1(rmdir, const char __user *, pathname);
-COMPAT_SYSCALL_WRAP1(pipe, int __user *, fildes);
-COMPAT_SYSCALL_WRAP1(brk, unsigned long, brk);
-COMPAT_SYSCALL_WRAP2(signal, int, sig, __sighandler_t, handler);
-COMPAT_SYSCALL_WRAP1(acct, const char __user *, name);
-COMPAT_SYSCALL_WRAP2(umount, char __user *, name, int, flags);
-COMPAT_SYSCALL_WRAP1(chroot, const char __user *, filename);
-COMPAT_SYSCALL_WRAP3(sigsuspend, int, unused1, int, unused2, old_sigset_t, mask);
-COMPAT_SYSCALL_WRAP2(sethostname, char __user *, name, int, len);
-COMPAT_SYSCALL_WRAP2(symlink, const char __user *, old, const char __user *, new);
-COMPAT_SYSCALL_WRAP3(readlink, const char __user *, path, char __user *, buf, int, bufsiz);
-COMPAT_SYSCALL_WRAP1(uselib, const char __user *, library);
-COMPAT_SYSCALL_WRAP2(swapon, const char __user *, specialfile, int, swap_flags);
-COMPAT_SYSCALL_WRAP4(reboot, int, magic1, int, magic2, unsigned int, cmd, void __user *, arg);
-COMPAT_SYSCALL_WRAP2(munmap, unsigned long, addr, size_t, len);
-COMPAT_SYSCALL_WRAP3(syslog, int, type, char __user *, buf, int, len);
-COMPAT_SYSCALL_WRAP1(swapoff, const char __user *, specialfile);
-COMPAT_SYSCALL_WRAP2(setdomainname, char __user *, name, int, len);
-COMPAT_SYSCALL_WRAP1(newuname, struct new_utsname __user *, name);
-COMPAT_SYSCALL_WRAP3(mprotect, unsigned long, start, size_t, len, unsigned long, prot);
-COMPAT_SYSCALL_WRAP3(init_module, void __user *, umod, unsigned long, len, const char __user *, uargs);
-COMPAT_SYSCALL_WRAP2(delete_module, const char __user *, name_user, unsigned int, flags);
-COMPAT_SYSCALL_WRAP4(quotactl, unsigned int, cmd, const char __user *, special, qid_t, id, void __user *, addr);
-COMPAT_SYSCALL_WRAP2(bdflush, int, func, long, data);
-COMPAT_SYSCALL_WRAP3(sysfs, int, option, unsigned long, arg1, unsigned long, arg2);
-COMPAT_SYSCALL_WRAP5(llseek, unsigned int, fd, unsigned long, high, unsigned long, low, loff_t __user *, result, unsigned int, whence);
-COMPAT_SYSCALL_WRAP3(msync, unsigned long, start, size_t, len, int, flags);
-COMPAT_SYSCALL_WRAP2(mlock, unsigned long, start, size_t, len);
-COMPAT_SYSCALL_WRAP2(munlock, unsigned long, start, size_t, len);
-COMPAT_SYSCALL_WRAP2(sched_setparam, pid_t, pid, struct sched_param __user *, param);
-COMPAT_SYSCALL_WRAP2(sched_getparam, pid_t, pid, struct sched_param __user *, param);
-COMPAT_SYSCALL_WRAP3(sched_setscheduler, pid_t, pid, int, policy, struct sched_param __user *, param);
-COMPAT_SYSCALL_WRAP5(mremap, unsigned long, addr, unsigned long, old_len, unsigned long, new_len, unsigned long, flags, unsigned long, new_addr);
-COMPAT_SYSCALL_WRAP3(poll, struct pollfd __user *, ufds, unsigned int, nfds, int, timeout);
-COMPAT_SYSCALL_WRAP5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, unsigned long, arg4, unsigned long, arg5);
-COMPAT_SYSCALL_WRAP2(getcwd, char __user *, buf, unsigned long, size);
-COMPAT_SYSCALL_WRAP2(capget, cap_user_header_t, header, cap_user_data_t, dataptr);
-COMPAT_SYSCALL_WRAP2(capset, cap_user_header_t, header, const cap_user_data_t, data);
-COMPAT_SYSCALL_WRAP3(lchown, const char __user *, filename, uid_t, user, gid_t, group);
-COMPAT_SYSCALL_WRAP2(getgroups, int, gidsetsize, gid_t __user *, grouplist);
-COMPAT_SYSCALL_WRAP2(setgroups, int, gidsetsize, gid_t __user *, grouplist);
-COMPAT_SYSCALL_WRAP3(getresuid, uid_t __user *, ruid, uid_t __user *, euid, uid_t __user *, suid);
-COMPAT_SYSCALL_WRAP3(getresgid, gid_t __user *, rgid, gid_t __user *, egid, gid_t __user *, sgid);
-COMPAT_SYSCALL_WRAP3(chown, const char __user *, filename, uid_t, user, gid_t, group);
-COMPAT_SYSCALL_WRAP2(pivot_root, const char __user *, new_root, const char __user *, put_old);
-COMPAT_SYSCALL_WRAP3(mincore, unsigned long, start, size_t, len, unsigned char __user *, vec);
-COMPAT_SYSCALL_WRAP3(madvise, unsigned long, start, size_t, len, int, behavior);
-COMPAT_SYSCALL_WRAP5(setxattr, const char __user *, path, const char __user *, name, const void __user *, value, size_t, size, int, flags);
-COMPAT_SYSCALL_WRAP5(lsetxattr, const char __user *, path, const char __user *, name, const void __user *, value, size_t, size, int, flags);
-COMPAT_SYSCALL_WRAP5(fsetxattr, int, fd, const char __user *, name, const void __user *, value, size_t, size, int, flags);
-COMPAT_SYSCALL_WRAP3(getdents64, unsigned int, fd, struct linux_dirent64 __user *, dirent, unsigned int, count);
-COMPAT_SYSCALL_WRAP4(getxattr, const char __user *, path, const char __user *, name, void __user *, value, size_t, size);
-COMPAT_SYSCALL_WRAP4(lgetxattr, const char __user *, path, const char __user *, name, void __user *, value, size_t, size);
-COMPAT_SYSCALL_WRAP4(fgetxattr, int, fd, const char __user *, name, void __user *, value, size_t, size);
-COMPAT_SYSCALL_WRAP3(listxattr, const char __user *, path, char __user *, list, size_t, size);
-COMPAT_SYSCALL_WRAP3(llistxattr, const char __user *, path, char __user *, list, size_t, size);
-COMPAT_SYSCALL_WRAP3(flistxattr, int, fd, char __user *, list, size_t, size);
-COMPAT_SYSCALL_WRAP2(removexattr, const char __user *, path, const char __user *, name);
-COMPAT_SYSCALL_WRAP2(lremovexattr, const char __user *, path, const char __user *, name);
-COMPAT_SYSCALL_WRAP2(fremovexattr, int, fd, const char __user *, name);
-COMPAT_SYSCALL_WRAP1(set_tid_address, int __user *, tidptr);
-COMPAT_SYSCALL_WRAP4(epoll_ctl, int, epfd, int, op, int, fd, struct epoll_event __user *, event);
-COMPAT_SYSCALL_WRAP4(epoll_wait, int, epfd, struct epoll_event __user *, events, int, maxevents, int, timeout);
-COMPAT_SYSCALL_WRAP1(io_destroy, aio_context_t, ctx);
-COMPAT_SYSCALL_WRAP3(io_cancel, aio_context_t, ctx_id, struct iocb __user *, iocb, struct io_event __user *, result);
-COMPAT_SYSCALL_WRAP1(mq_unlink, const char __user *, name);
-COMPAT_SYSCALL_WRAP5(add_key, const char __user *, tp, const char __user *, dsc, const void __user *, pld, size_t, len, key_serial_t, id);
-COMPAT_SYSCALL_WRAP4(request_key, const char __user *, tp, const char __user *, dsc, const char __user *, info, key_serial_t, id);
-COMPAT_SYSCALL_WRAP5(remap_file_pages, unsigned long, start, unsigned long, size, unsigned long, prot, unsigned long, pgoff, unsigned long, flags);
-COMPAT_SYSCALL_WRAP3(inotify_add_watch, int, fd, const char __user *, path, u32, mask);
-COMPAT_SYSCALL_WRAP3(mkdirat, int, dfd, const char __user *, pathname, umode_t, mode);
-COMPAT_SYSCALL_WRAP4(mknodat, int, dfd, const char __user *, filename, umode_t, mode, unsigned, dev);
-COMPAT_SYSCALL_WRAP5(fchownat, int, dfd, const char __user *, filename, uid_t, user, gid_t, group, int, flag);
-COMPAT_SYSCALL_WRAP3(unlinkat, int, dfd, const char __user *, pathname, int, flag);
-COMPAT_SYSCALL_WRAP4(renameat, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname);
-COMPAT_SYSCALL_WRAP5(linkat, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname, int, flags);
-COMPAT_SYSCALL_WRAP3(symlinkat, const char __user *, oldname, int, newdfd, const char __user *, newname);
-COMPAT_SYSCALL_WRAP4(readlinkat, int, dfd, const char __user *, path, char __user *, buf, int, bufsiz);
-COMPAT_SYSCALL_WRAP3(fchmodat, int, dfd, const char __user *, filename, umode_t, mode);
-COMPAT_SYSCALL_WRAP3(faccessat, int, dfd, const char __user *, filename, int, mode);
-COMPAT_SYSCALL_WRAP1(unshare, unsigned long, unshare_flags);
-COMPAT_SYSCALL_WRAP6(splice, int, fd_in, loff_t __user *, off_in, int, fd_out, loff_t __user *, off_out, size_t, len, unsigned int, flags);
-COMPAT_SYSCALL_WRAP4(tee, int, fdin, int, fdout, size_t, len, unsigned int, flags);
-COMPAT_SYSCALL_WRAP3(getcpu, unsigned __user *, cpu, unsigned __user *, node, struct getcpu_cache __user *, cache);
-COMPAT_SYSCALL_WRAP2(pipe2, int __user *, fildes, int, flags);
-COMPAT_SYSCALL_WRAP5(perf_event_open, struct perf_event_attr __user *, attr_uptr, pid_t, pid, int, cpu, int, group_fd, unsigned long, flags);
-COMPAT_SYSCALL_WRAP5(clone, unsigned long, newsp, unsigned long, clone_flags, int __user *, parent_tidptr, int __user *, child_tidptr, unsigned long, tls);
-COMPAT_SYSCALL_WRAP4(prlimit64, pid_t, pid, unsigned int, resource, const struct rlimit64 __user *, new_rlim, struct rlimit64 __user *, old_rlim);
-COMPAT_SYSCALL_WRAP5(name_to_handle_at, int, dfd, const char __user *, name, struct file_handle __user *, handle, int __user *, mnt_id, int, flag);
-COMPAT_SYSCALL_WRAP5(kcmp, pid_t, pid1, pid_t, pid2, int, type, unsigned long, idx1, unsigned long, idx2);
-COMPAT_SYSCALL_WRAP3(finit_module, int, fd, const char __user *, uargs, int, flags);
-COMPAT_SYSCALL_WRAP3(sched_setattr, pid_t, pid, struct sched_attr __user *, attr, unsigned int, flags);
-COMPAT_SYSCALL_WRAP4(sched_getattr, pid_t, pid, struct sched_attr __user *, attr, unsigned int, size, unsigned int, flags);
-COMPAT_SYSCALL_WRAP5(renameat2, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname, unsigned int, flags);
-COMPAT_SYSCALL_WRAP3(seccomp, unsigned int, op, unsigned int, flags, void __user *, uargs)
-COMPAT_SYSCALL_WRAP3(getrandom, char __user *, buf, size_t, count, unsigned int, flags)
-COMPAT_SYSCALL_WRAP2(memfd_create, const char __user *, uname, unsigned int, flags)
-COMPAT_SYSCALL_WRAP3(bpf, int, cmd, union bpf_attr *, attr, unsigned int, size);
-COMPAT_SYSCALL_WRAP3(s390_pci_mmio_write, const unsigned long, mmio_addr, const void __user *, user_buffer, const size_t, length);
-COMPAT_SYSCALL_WRAP3(s390_pci_mmio_read, const unsigned long, mmio_addr, void __user *, user_buffer, const size_t, length);
-COMPAT_SYSCALL_WRAP4(socketpair, int, family, int, type, int, protocol, int __user *, usockvec);
-COMPAT_SYSCALL_WRAP3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen);
-COMPAT_SYSCALL_WRAP3(connect, int, fd, struct sockaddr __user *, uservaddr, int, addrlen);
-COMPAT_SYSCALL_WRAP4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr, int __user *, upeer_addrlen, int, flags);
-COMPAT_SYSCALL_WRAP3(getsockname, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len);
-COMPAT_SYSCALL_WRAP3(getpeername, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len);
-COMPAT_SYSCALL_WRAP6(sendto, int, fd, void __user *, buff, size_t, len, unsigned int, flags, struct sockaddr __user *, addr, int, addr_len);
-COMPAT_SYSCALL_WRAP3(mlock2, unsigned long, start, size_t, len, int, flags);
-COMPAT_SYSCALL_WRAP6(copy_file_range, int, fd_in, loff_t __user *, off_in, int, fd_out, loff_t __user *, off_out, size_t, len, unsigned int, flags);
-COMPAT_SYSCALL_WRAP2(s390_guarded_storage, int, command, struct gs_cb *, gs_cb);
-COMPAT_SYSCALL_WRAP5(statx, int, dfd, const char __user *, path, unsigned, flags, unsigned, mask, struct statx __user *, buffer);
-COMPAT_SYSCALL_WRAP4(s390_sthyi, unsigned long, code, void __user *, info, u64 __user *, rc, unsigned long, flags);
-COMPAT_SYSCALL_WRAP5(kexec_file_load, int, kernel_fd, int, initrd_fd, unsigned long, cmdline_len, const char __user *, cmdline_ptr, unsigned long, flags)
-COMPAT_SYSCALL_WRAP4(rseq, struct rseq __user *, rseq, u32, rseq_len, int, flags, u32, sig)
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 39191a0feed1..583d65ef5007 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -1512,7 +1512,7 @@ cleanup_critical:
.quad .Lsie_skip - .Lsie_entry
#endif
.section .rodata, "a"
-#define SYSCALL(esame,emu) .long esame
+#define SYSCALL(esame,emu) .long __s390x_ ## esame
.globl sys_call_table
sys_call_table:
#include "asm/syscall_table.h"
@@ -1520,7 +1520,7 @@ sys_call_table:
#ifdef CONFIG_COMPAT
-#define SYSCALL(esame,emu) .long emu
+#define SYSCALL(esame,emu) .long __s390_ ## emu
.globl sys_call_table_emu
sys_call_table_emu:
#include "asm/syscall_table.h"
diff --git a/arch/s390/kernel/sys_s390.c b/arch/s390/kernel/sys_s390.c
index 31cefe0c28c0..202fa73ac167 100644
--- a/arch/s390/kernel/sys_s390.c
+++ b/arch/s390/kernel/sys_s390.c
@@ -58,6 +58,7 @@ out:
return error;
}
+#ifdef CONFIG_SYSVIPC
/*
* sys_ipc() is the de-multiplexer for the SysV IPC calls.
*/
@@ -74,19 +75,28 @@ SYSCALL_DEFINE5(s390_ipc, uint, call, int, first, unsigned long, second,
* Therefore we can call the generic variant by simply passing the
* third parameter also as fifth parameter.
*/
- return sys_ipc(call, first, second, third, ptr, third);
+ return ksys_ipc(call, first, second, third, ptr, third);
}
+#endif /* CONFIG_SYSVIPC */
SYSCALL_DEFINE1(s390_personality, unsigned int, personality)
{
- unsigned int ret;
+ unsigned int ret = current->personality;
if (personality(current->personality) == PER_LINUX32 &&
personality(personality) == PER_LINUX)
personality |= PER_LINUX32;
- ret = sys_personality(personality);
+
+ if (personality != 0xffffffff)
+ set_personality(personality);
+
if (personality(ret) == PER_LINUX32)
ret &= ~PER_LINUX32;
return ret;
}
+
+SYSCALL_DEFINE0(ni_syscall)
+{
+ return -ENOSYS;
+}
diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl
index 022fc099b628..620e222003ca 100644
--- a/arch/s390/kernel/syscalls/syscall.tbl
+++ b/arch/s390/kernel/syscalls/syscall.tbl
@@ -15,86 +15,86 @@
5 common open sys_open compat_sys_open
6 common close sys_close sys_close
7 common restart_syscall sys_restart_syscall sys_restart_syscall
-8 common creat sys_creat compat_sys_creat
-9 common link sys_link compat_sys_link
-10 common unlink sys_unlink compat_sys_unlink
+8 common creat sys_creat sys_creat
+9 common link sys_link sys_link
+10 common unlink sys_unlink sys_unlink
11 common execve sys_execve compat_sys_execve
-12 common chdir sys_chdir compat_sys_chdir
+12 common chdir sys_chdir sys_chdir
13 32 time - compat_sys_time
-14 common mknod sys_mknod compat_sys_mknod
-15 common chmod sys_chmod compat_sys_chmod
-16 32 lchown - compat_sys_s390_lchown16
+14 common mknod sys_mknod sys_mknod
+15 common chmod sys_chmod sys_chmod
+16 32 lchown - sys_lchown16
19 common lseek sys_lseek compat_sys_lseek
20 common getpid sys_getpid sys_getpid
21 common mount sys_mount compat_sys_mount
-22 common umount sys_oldumount compat_sys_oldumount
-23 32 setuid - compat_sys_s390_setuid16
-24 32 getuid - compat_sys_s390_getuid16
+22 common umount sys_oldumount sys_oldumount
+23 32 setuid - sys_setuid16
+24 32 getuid - sys_getuid16
25 32 stime - compat_sys_stime
26 common ptrace sys_ptrace compat_sys_ptrace
27 common alarm sys_alarm sys_alarm
29 common pause sys_pause sys_pause
30 common utime sys_utime compat_sys_utime
-33 common access sys_access compat_sys_access
+33 common access sys_access sys_access
34 common nice sys_nice sys_nice
36 common sync sys_sync sys_sync
37 common kill sys_kill sys_kill
-38 common rename sys_rename compat_sys_rename
-39 common mkdir sys_mkdir compat_sys_mkdir
-40 common rmdir sys_rmdir compat_sys_rmdir
+38 common rename sys_rename sys_rename
+39 common mkdir sys_mkdir sys_mkdir
+40 common rmdir sys_rmdir sys_rmdir
41 common dup sys_dup sys_dup
-42 common pipe sys_pipe compat_sys_pipe
+42 common pipe sys_pipe sys_pipe
43 common times sys_times compat_sys_times
-45 common brk sys_brk compat_sys_brk
-46 32 setgid - compat_sys_s390_setgid16
-47 32 getgid - compat_sys_s390_getgid16
-48 common signal sys_signal compat_sys_signal
-49 32 geteuid - compat_sys_s390_geteuid16
-50 32 getegid - compat_sys_s390_getegid16
-51 common acct sys_acct compat_sys_acct
-52 common umount2 sys_umount compat_sys_umount
+45 common brk sys_brk sys_brk
+46 32 setgid - sys_setgid16
+47 32 getgid - sys_getgid16
+48 common signal sys_signal sys_signal
+49 32 geteuid - sys_geteuid16
+50 32 getegid - sys_getegid16
+51 common acct sys_acct sys_acct
+52 common umount2 sys_umount sys_umount
54 common ioctl sys_ioctl compat_sys_ioctl
55 common fcntl sys_fcntl compat_sys_fcntl
57 common setpgid sys_setpgid sys_setpgid
60 common umask sys_umask sys_umask
-61 common chroot sys_chroot compat_sys_chroot
+61 common chroot sys_chroot sys_chroot
62 common ustat sys_ustat compat_sys_ustat
63 common dup2 sys_dup2 sys_dup2
64 common getppid sys_getppid sys_getppid
65 common getpgrp sys_getpgrp sys_getpgrp
66 common setsid sys_setsid sys_setsid
67 common sigaction sys_sigaction compat_sys_sigaction
-70 32 setreuid - compat_sys_s390_setreuid16
-71 32 setregid - compat_sys_s390_setregid16
-72 common sigsuspend sys_sigsuspend compat_sys_sigsuspend
+70 32 setreuid - sys_setreuid16
+71 32 setregid - sys_setregid16
+72 common sigsuspend sys_sigsuspend sys_sigsuspend
73 common sigpending sys_sigpending compat_sys_sigpending
-74 common sethostname sys_sethostname compat_sys_sethostname
+74 common sethostname sys_sethostname sys_sethostname
75 common setrlimit sys_setrlimit compat_sys_setrlimit
76 32 getrlimit - compat_sys_old_getrlimit
77 common getrusage sys_getrusage compat_sys_getrusage
78 common gettimeofday sys_gettimeofday compat_sys_gettimeofday
79 common settimeofday sys_settimeofday compat_sys_settimeofday
-80 32 getgroups - compat_sys_s390_getgroups16
-81 32 setgroups - compat_sys_s390_setgroups16
-83 common symlink sys_symlink compat_sys_symlink
-85 common readlink sys_readlink compat_sys_readlink
-86 common uselib sys_uselib compat_sys_uselib
-87 common swapon sys_swapon compat_sys_swapon
-88 common reboot sys_reboot compat_sys_reboot
+80 32 getgroups - sys_getgroups16
+81 32 setgroups - sys_setgroups16
+83 common symlink sys_symlink sys_symlink
+85 common readlink sys_readlink sys_readlink
+86 common uselib sys_uselib sys_uselib
+87 common swapon sys_swapon sys_swapon
+88 common reboot sys_reboot sys_reboot
89 common readdir - compat_sys_old_readdir
90 common mmap sys_old_mmap compat_sys_s390_old_mmap
-91 common munmap sys_munmap compat_sys_munmap
+91 common munmap sys_munmap sys_munmap
92 common truncate sys_truncate compat_sys_truncate
93 common ftruncate sys_ftruncate compat_sys_ftruncate
94 common fchmod sys_fchmod sys_fchmod
-95 32 fchown - compat_sys_s390_fchown16
+95 32 fchown - sys_fchown16
96 common getpriority sys_getpriority sys_getpriority
97 common setpriority sys_setpriority sys_setpriority
99 common statfs sys_statfs compat_sys_statfs
100 common fstatfs sys_fstatfs compat_sys_fstatfs
101 32 ioperm - -
102 common socketcall sys_socketcall compat_sys_socketcall
-103 common syslog sys_syslog compat_sys_syslog
+103 common syslog sys_syslog sys_syslog
104 common setitimer sys_setitimer compat_sys_setitimer
105 common getitimer sys_getitimer compat_sys_getitimer
106 common stat sys_newstat compat_sys_newstat
@@ -104,63 +104,63 @@
111 common vhangup sys_vhangup sys_vhangup
112 common idle - -
114 common wait4 sys_wait4 compat_sys_wait4
-115 common swapoff sys_swapoff compat_sys_swapoff
+115 common swapoff sys_swapoff sys_swapoff
116 common sysinfo sys_sysinfo compat_sys_sysinfo
117 common ipc sys_s390_ipc compat_sys_s390_ipc
118 common fsync sys_fsync sys_fsync
119 common sigreturn sys_sigreturn compat_sys_sigreturn
-120 common clone sys_clone compat_sys_clone
-121 common setdomainname sys_setdomainname compat_sys_setdomainname
-122 common uname sys_newuname compat_sys_newuname
+120 common clone sys_clone sys_clone
+121 common setdomainname sys_setdomainname sys_setdomainname
+122 common uname sys_newuname sys_newuname
124 common adjtimex sys_adjtimex compat_sys_adjtimex
-125 common mprotect sys_mprotect compat_sys_mprotect
+125 common mprotect sys_mprotect sys_mprotect
126 common sigprocmask sys_sigprocmask compat_sys_sigprocmask
127 common create_module - -
-128 common init_module sys_init_module compat_sys_init_module
-129 common delete_module sys_delete_module compat_sys_delete_module
+128 common init_module sys_init_module sys_init_module
+129 common delete_module sys_delete_module sys_delete_module
130 common get_kernel_syms - -
-131 common quotactl sys_quotactl compat_sys_quotactl
+131 common quotactl sys_quotactl sys_quotactl
132 common getpgid sys_getpgid sys_getpgid
133 common fchdir sys_fchdir sys_fchdir
-134 common bdflush sys_bdflush compat_sys_bdflush
-135 common sysfs sys_sysfs compat_sys_sysfs
+134 common bdflush sys_bdflush sys_bdflush
+135 common sysfs sys_sysfs sys_sysfs
136 common personality sys_s390_personality sys_s390_personality
137 common afs_syscall - -
-138 32 setfsuid - compat_sys_s390_setfsuid16
-139 32 setfsgid - compat_sys_s390_setfsgid16
-140 32 _llseek - compat_sys_llseek
+138 32 setfsuid - sys_setfsuid16
+139 32 setfsgid - sys_setfsgid16
+140 32 _llseek - sys_llseek
141 common getdents sys_getdents compat_sys_getdents
142 32 _newselect - compat_sys_select
142 64 select sys_select -
143 common flock sys_flock sys_flock
-144 common msync sys_msync compat_sys_msync
+144 common msync sys_msync sys_msync
145 common readv sys_readv compat_sys_readv
146 common writev sys_writev compat_sys_writev
147 common getsid sys_getsid sys_getsid
148 common fdatasync sys_fdatasync sys_fdatasync
149 common _sysctl sys_sysctl compat_sys_sysctl
-150 common mlock sys_mlock compat_sys_mlock
-151 common munlock sys_munlock compat_sys_munlock
+150 common mlock sys_mlock sys_mlock
+151 common munlock sys_munlock sys_munlock
152 common mlockall sys_mlockall sys_mlockall
153 common munlockall sys_munlockall sys_munlockall
-154 common sched_setparam sys_sched_setparam compat_sys_sched_setparam
-155 common sched_getparam sys_sched_getparam compat_sys_sched_getparam
-156 common sched_setscheduler sys_sched_setscheduler compat_sys_sched_setscheduler
+154 common sched_setparam sys_sched_setparam sys_sched_setparam
+155 common sched_getparam sys_sched_getparam sys_sched_getparam
+156 common sched_setscheduler sys_sched_setscheduler sys_sched_setscheduler
157 common sched_getscheduler sys_sched_getscheduler sys_sched_getscheduler
158 common sched_yield sys_sched_yield sys_sched_yield
159 common sched_get_priority_max sys_sched_get_priority_max sys_sched_get_priority_max
160 common sched_get_priority_min sys_sched_get_priority_min sys_sched_get_priority_min
161 common sched_rr_get_interval sys_sched_rr_get_interval compat_sys_sched_rr_get_interval
162 common nanosleep sys_nanosleep compat_sys_nanosleep
-163 common mremap sys_mremap compat_sys_mremap
-164 32 setresuid - compat_sys_s390_setresuid16
-165 32 getresuid - compat_sys_s390_getresuid16
+163 common mremap sys_mremap sys_mremap
+164 32 setresuid - sys_setresuid16
+165 32 getresuid - sys_getresuid16
167 common query_module - -
-168 common poll sys_poll compat_sys_poll
+168 common poll sys_poll sys_poll
169 common nfsservctl - -
-170 32 setresgid - compat_sys_s390_setresgid16
-171 32 getresgid - compat_sys_s390_getresgid16
-172 common prctl sys_prctl compat_sys_prctl
+170 32 setresgid - sys_setresgid16
+171 32 getresgid - sys_getresgid16
+172 common prctl sys_prctl sys_prctl
173 common rt_sigreturn sys_rt_sigreturn compat_sys_rt_sigreturn
174 common rt_sigaction sys_rt_sigaction compat_sys_rt_sigaction
175 common rt_sigprocmask sys_rt_sigprocmask compat_sys_rt_sigprocmask
@@ -170,10 +170,10 @@
179 common rt_sigsuspend sys_rt_sigsuspend compat_sys_rt_sigsuspend
180 common pread64 sys_pread64 compat_sys_s390_pread64
181 common pwrite64 sys_pwrite64 compat_sys_s390_pwrite64
-182 32 chown - compat_sys_s390_chown16
-183 common getcwd sys_getcwd compat_sys_getcwd
-184 common capget sys_capget compat_sys_capget
-185 common capset sys_capset compat_sys_capset
+182 32 chown - sys_chown16
+183 common getcwd sys_getcwd sys_getcwd
+184 common capget sys_capget sys_capget
+185 common capset sys_capset sys_capset
186 common sigaltstack sys_sigaltstack compat_sys_sigaltstack
187 common sendfile sys_sendfile64 compat_sys_sendfile
188 common getpmsg - -
@@ -187,7 +187,7 @@
195 32 stat64 - compat_sys_s390_stat64
196 32 lstat64 - compat_sys_s390_lstat64
197 32 fstat64 - compat_sys_s390_fstat64
-198 32 lchown32 - compat_sys_lchown
+198 32 lchown32 - sys_lchown
198 64 lchown sys_lchown -
199 32 getuid32 - sys_getuid
199 64 getuid sys_getuid -
@@ -201,21 +201,21 @@
203 64 setreuid sys_setreuid -
204 32 setregid32 - sys_setregid
204 64 setregid sys_setregid -
-205 32 getgroups32 - compat_sys_getgroups
+205 32 getgroups32 - sys_getgroups
205 64 getgroups sys_getgroups -
-206 32 setgroups32 - compat_sys_setgroups
+206 32 setgroups32 - sys_setgroups
206 64 setgroups sys_setgroups -
207 32 fchown32 - sys_fchown
207 64 fchown sys_fchown -
208 32 setresuid32 - sys_setresuid
208 64 setresuid sys_setresuid -
-209 32 getresuid32 - compat_sys_getresuid
+209 32 getresuid32 - sys_getresuid
209 64 getresuid sys_getresuid -
210 32 setresgid32 - sys_setresgid
210 64 setresgid sys_setresgid -
-211 32 getresgid32 - compat_sys_getresgid
+211 32 getresgid32 - sys_getresgid
211 64 getresgid sys_getresgid -
-212 32 chown32 - compat_sys_chown
+212 32 chown32 - sys_chown
212 64 chown sys_chown -
213 32 setuid32 - sys_setuid
213 64 setuid sys_setuid -
@@ -225,25 +225,25 @@
215 64 setfsuid sys_setfsuid -
216 32 setfsgid32 - sys_setfsgid
216 64 setfsgid sys_setfsgid -
-217 common pivot_root sys_pivot_root compat_sys_pivot_root
-218 common mincore sys_mincore compat_sys_mincore
-219 common madvise sys_madvise compat_sys_madvise
-220 common getdents64 sys_getdents64 compat_sys_getdents64
+217 common pivot_root sys_pivot_root sys_pivot_root
+218 common mincore sys_mincore sys_mincore
+219 common madvise sys_madvise sys_madvise
+220 common getdents64 sys_getdents64 sys_getdents64
221 32 fcntl64 - compat_sys_fcntl64
222 common readahead sys_readahead compat_sys_s390_readahead
223 32 sendfile64 - compat_sys_sendfile64
-224 common setxattr sys_setxattr compat_sys_setxattr
-225 common lsetxattr sys_lsetxattr compat_sys_lsetxattr
-226 common fsetxattr sys_fsetxattr compat_sys_fsetxattr
-227 common getxattr sys_getxattr compat_sys_getxattr
-228 common lgetxattr sys_lgetxattr compat_sys_lgetxattr
-229 common fgetxattr sys_fgetxattr compat_sys_fgetxattr
-230 common listxattr sys_listxattr compat_sys_listxattr
-231 common llistxattr sys_llistxattr compat_sys_llistxattr
-232 common flistxattr sys_flistxattr compat_sys_flistxattr
-233 common removexattr sys_removexattr compat_sys_removexattr
-234 common lremovexattr sys_lremovexattr compat_sys_lremovexattr
-235 common fremovexattr sys_fremovexattr compat_sys_fremovexattr
+224 common setxattr sys_setxattr sys_setxattr
+225 common lsetxattr sys_lsetxattr sys_lsetxattr
+226 common fsetxattr sys_fsetxattr sys_fsetxattr
+227 common getxattr sys_getxattr sys_getxattr
+228 common lgetxattr sys_lgetxattr sys_lgetxattr
+229 common fgetxattr sys_fgetxattr sys_fgetxattr
+230 common listxattr sys_listxattr sys_listxattr
+231 common llistxattr sys_llistxattr sys_llistxattr
+232 common flistxattr sys_flistxattr sys_flistxattr
+233 common removexattr sys_removexattr sys_removexattr
+234 common lremovexattr sys_lremovexattr sys_lremovexattr
+235 common fremovexattr sys_fremovexattr sys_fremovexattr
236 common gettid sys_gettid sys_gettid
237 common tkill sys_tkill sys_tkill
238 common futex sys_futex compat_sys_futex
@@ -251,15 +251,15 @@
240 common sched_getaffinity sys_sched_getaffinity compat_sys_sched_getaffinity
241 common tgkill sys_tgkill sys_tgkill
243 common io_setup sys_io_setup compat_sys_io_setup
-244 common io_destroy sys_io_destroy compat_sys_io_destroy
+244 common io_destroy sys_io_destroy sys_io_destroy
245 common io_getevents sys_io_getevents compat_sys_io_getevents
246 common io_submit sys_io_submit compat_sys_io_submit
-247 common io_cancel sys_io_cancel compat_sys_io_cancel
+247 common io_cancel sys_io_cancel sys_io_cancel
248 common exit_group sys_exit_group sys_exit_group
249 common epoll_create sys_epoll_create sys_epoll_create
-250 common epoll_ctl sys_epoll_ctl compat_sys_epoll_ctl
-251 common epoll_wait sys_epoll_wait compat_sys_epoll_wait
-252 common set_tid_address sys_set_tid_address compat_sys_set_tid_address
+250 common epoll_ctl sys_epoll_ctl sys_epoll_ctl
+251 common epoll_wait sys_epoll_wait sys_epoll_wait
+252 common set_tid_address sys_set_tid_address sys_set_tid_address
253 common fadvise64 sys_fadvise64_64 compat_sys_s390_fadvise64
254 common timer_create sys_timer_create compat_sys_timer_create
255 common timer_settime sys_timer_settime compat_sys_timer_settime
@@ -273,52 +273,52 @@
264 32 fadvise64_64 - compat_sys_s390_fadvise64_64
265 common statfs64 sys_statfs64 compat_sys_statfs64
266 common fstatfs64 sys_fstatfs64 compat_sys_fstatfs64
-267 common remap_file_pages sys_remap_file_pages compat_sys_remap_file_pages
+267 common remap_file_pages sys_remap_file_pages sys_remap_file_pages
268 common mbind sys_mbind compat_sys_mbind
269 common get_mempolicy sys_get_mempolicy compat_sys_get_mempolicy
270 common set_mempolicy sys_set_mempolicy compat_sys_set_mempolicy
271 common mq_open sys_mq_open compat_sys_mq_open
-272 common mq_unlink sys_mq_unlink compat_sys_mq_unlink
+272 common mq_unlink sys_mq_unlink sys_mq_unlink
273 common mq_timedsend sys_mq_timedsend compat_sys_mq_timedsend
274 common mq_timedreceive sys_mq_timedreceive compat_sys_mq_timedreceive
275 common mq_notify sys_mq_notify compat_sys_mq_notify
276 common mq_getsetattr sys_mq_getsetattr compat_sys_mq_getsetattr
277 common kexec_load sys_kexec_load compat_sys_kexec_load
-278 common add_key sys_add_key compat_sys_add_key
-279 common request_key sys_request_key compat_sys_request_key
+278 common add_key sys_add_key sys_add_key
+279 common request_key sys_request_key sys_request_key
280 common keyctl sys_keyctl compat_sys_keyctl
281 common waitid sys_waitid compat_sys_waitid
282 common ioprio_set sys_ioprio_set sys_ioprio_set
283 common ioprio_get sys_ioprio_get sys_ioprio_get
284 common inotify_init sys_inotify_init sys_inotify_init
-285 common inotify_add_watch sys_inotify_add_watch compat_sys_inotify_add_watch
+285 common inotify_add_watch sys_inotify_add_watch sys_inotify_add_watch
286 common inotify_rm_watch sys_inotify_rm_watch sys_inotify_rm_watch
287 common migrate_pages sys_migrate_pages compat_sys_migrate_pages
288 common openat sys_openat compat_sys_openat
-289 common mkdirat sys_mkdirat compat_sys_mkdirat
-290 common mknodat sys_mknodat compat_sys_mknodat
-291 common fchownat sys_fchownat compat_sys_fchownat
+289 common mkdirat sys_mkdirat sys_mkdirat
+290 common mknodat sys_mknodat sys_mknodat
+291 common fchownat sys_fchownat sys_fchownat
292 common futimesat sys_futimesat compat_sys_futimesat
293 32 fstatat64 - compat_sys_s390_fstatat64
293 64 newfstatat sys_newfstatat -
-294 common unlinkat sys_unlinkat compat_sys_unlinkat
-295 common renameat sys_renameat compat_sys_renameat
-296 common linkat sys_linkat compat_sys_linkat
-297 common symlinkat sys_symlinkat compat_sys_symlinkat
-298 common readlinkat sys_readlinkat compat_sys_readlinkat
-299 common fchmodat sys_fchmodat compat_sys_fchmodat
-300 common faccessat sys_faccessat compat_sys_faccessat
+294 common unlinkat sys_unlinkat sys_unlinkat
+295 common renameat sys_renameat sys_renameat
+296 common linkat sys_linkat sys_linkat
+297 common symlinkat sys_symlinkat sys_symlinkat
+298 common readlinkat sys_readlinkat sys_readlinkat
+299 common fchmodat sys_fchmodat sys_fchmodat
+300 common faccessat sys_faccessat sys_faccessat
301 common pselect6 sys_pselect6 compat_sys_pselect6
302 common ppoll sys_ppoll compat_sys_ppoll
-303 common unshare sys_unshare compat_sys_unshare
+303 common unshare sys_unshare sys_unshare
304 common set_robust_list sys_set_robust_list compat_sys_set_robust_list
305 common get_robust_list sys_get_robust_list compat_sys_get_robust_list
-306 common splice sys_splice compat_sys_splice
+306 common splice sys_splice sys_splice
307 common sync_file_range sys_sync_file_range compat_sys_s390_sync_file_range
-308 common tee sys_tee compat_sys_tee
+308 common tee sys_tee sys_tee
309 common vmsplice sys_vmsplice compat_sys_vmsplice
310 common move_pages sys_move_pages compat_sys_move_pages
-311 common getcpu sys_getcpu compat_sys_getcpu
+311 common getcpu sys_getcpu sys_getcpu
312 common epoll_pwait sys_epoll_pwait compat_sys_epoll_pwait
313 common utimes sys_utimes compat_sys_utimes
314 common fallocate sys_fallocate compat_sys_s390_fallocate
@@ -332,17 +332,17 @@
322 common signalfd4 sys_signalfd4 compat_sys_signalfd4
323 common eventfd2 sys_eventfd2 sys_eventfd2
324 common inotify_init1 sys_inotify_init1 sys_inotify_init1
-325 common pipe2 sys_pipe2 compat_sys_pipe2
+325 common pipe2 sys_pipe2 sys_pipe2
326 common dup3 sys_dup3 sys_dup3
327 common epoll_create1 sys_epoll_create1 sys_epoll_create1
328 common preadv sys_preadv compat_sys_preadv
329 common pwritev sys_pwritev compat_sys_pwritev
330 common rt_tgsigqueueinfo sys_rt_tgsigqueueinfo compat_sys_rt_tgsigqueueinfo
-331 common perf_event_open sys_perf_event_open compat_sys_perf_event_open
+331 common perf_event_open sys_perf_event_open sys_perf_event_open
332 common fanotify_init sys_fanotify_init sys_fanotify_init
333 common fanotify_mark sys_fanotify_mark compat_sys_fanotify_mark
-334 common prlimit64 sys_prlimit64 compat_sys_prlimit64
-335 common name_to_handle_at sys_name_to_handle_at compat_sys_name_to_handle_at
+334 common prlimit64 sys_prlimit64 sys_prlimit64
+335 common name_to_handle_at sys_name_to_handle_at sys_name_to_handle_at
336 common open_by_handle_at sys_open_by_handle_at compat_sys_open_by_handle_at
337 common clock_adjtime sys_clock_adjtime compat_sys_clock_adjtime
338 common syncfs sys_syncfs sys_syncfs
@@ -350,44 +350,59 @@
340 common process_vm_readv sys_process_vm_readv compat_sys_process_vm_readv
341 common process_vm_writev sys_process_vm_writev compat_sys_process_vm_writev
342 common s390_runtime_instr sys_s390_runtime_instr sys_s390_runtime_instr
-343 common kcmp sys_kcmp compat_sys_kcmp
-344 common finit_module sys_finit_module compat_sys_finit_module
-345 common sched_setattr sys_sched_setattr compat_sys_sched_setattr
-346 common sched_getattr sys_sched_getattr compat_sys_sched_getattr
-347 common renameat2 sys_renameat2 compat_sys_renameat2
-348 common seccomp sys_seccomp compat_sys_seccomp
-349 common getrandom sys_getrandom compat_sys_getrandom
-350 common memfd_create sys_memfd_create compat_sys_memfd_create
-351 common bpf sys_bpf compat_sys_bpf
-352 common s390_pci_mmio_write sys_s390_pci_mmio_write compat_sys_s390_pci_mmio_write
-353 common s390_pci_mmio_read sys_s390_pci_mmio_read compat_sys_s390_pci_mmio_read
+343 common kcmp sys_kcmp sys_kcmp
+344 common finit_module sys_finit_module sys_finit_module
+345 common sched_setattr sys_sched_setattr sys_sched_setattr
+346 common sched_getattr sys_sched_getattr sys_sched_getattr
+347 common renameat2 sys_renameat2 sys_renameat2
+348 common seccomp sys_seccomp sys_seccomp
+349 common getrandom sys_getrandom sys_getrandom
+350 common memfd_create sys_memfd_create sys_memfd_create
+351 common bpf sys_bpf sys_bpf
+352 common s390_pci_mmio_write sys_s390_pci_mmio_write sys_s390_pci_mmio_write
+353 common s390_pci_mmio_read sys_s390_pci_mmio_read sys_s390_pci_mmio_read
354 common execveat sys_execveat compat_sys_execveat
355 common userfaultfd sys_userfaultfd sys_userfaultfd
356 common membarrier sys_membarrier sys_membarrier
357 common recvmmsg sys_recvmmsg compat_sys_recvmmsg
358 common sendmmsg sys_sendmmsg compat_sys_sendmmsg
359 common socket sys_socket sys_socket
-360 common socketpair sys_socketpair compat_sys_socketpair
-361 common bind sys_bind compat_sys_bind
-362 common connect sys_connect compat_sys_connect
+360 common socketpair sys_socketpair sys_socketpair
+361 common bind sys_bind sys_bind
+362 common connect sys_connect sys_connect
363 common listen sys_listen sys_listen
-364 common accept4 sys_accept4 compat_sys_accept4
+364 common accept4 sys_accept4 sys_accept4
365 common getsockopt sys_getsockopt compat_sys_getsockopt
366 common setsockopt sys_setsockopt compat_sys_setsockopt
-367 common getsockname sys_getsockname compat_sys_getsockname
-368 common getpeername sys_getpeername compat_sys_getpeername
-369 common sendto sys_sendto compat_sys_sendto
+367 common getsockname sys_getsockname sys_getsockname
+368 common getpeername sys_getpeername sys_getpeername
+369 common sendto sys_sendto sys_sendto
370 common sendmsg sys_sendmsg compat_sys_sendmsg
371 common recvfrom sys_recvfrom compat_sys_recvfrom
372 common recvmsg sys_recvmsg compat_sys_recvmsg
373 common shutdown sys_shutdown sys_shutdown
-374 common mlock2 sys_mlock2 compat_sys_mlock2
-375 common copy_file_range sys_copy_file_range compat_sys_copy_file_range
+374 common mlock2 sys_mlock2 sys_mlock2
+375 common copy_file_range sys_copy_file_range sys_copy_file_range
376 common preadv2 sys_preadv2 compat_sys_preadv2
377 common pwritev2 sys_pwritev2 compat_sys_pwritev2
-378 common s390_guarded_storage sys_s390_guarded_storage compat_sys_s390_guarded_storage
-379 common statx sys_statx compat_sys_statx
-380 common s390_sthyi sys_s390_sthyi compat_sys_s390_sthyi
-381 common kexec_file_load sys_kexec_file_load compat_sys_kexec_file_load
+378 common s390_guarded_storage sys_s390_guarded_storage sys_s390_guarded_storage
+379 common statx sys_statx sys_statx
+380 common s390_sthyi sys_s390_sthyi sys_s390_sthyi
+381 common kexec_file_load sys_kexec_file_load sys_kexec_file_load
382 common io_pgetevents sys_io_pgetevents compat_sys_io_pgetevents
-383 common rseq sys_rseq compat_sys_rseq
+383 common rseq sys_rseq sys_rseq
+384 common pkey_mprotect sys_pkey_mprotect sys_pkey_mprotect
+385 common pkey_alloc sys_pkey_alloc sys_pkey_alloc
+386 common pkey_free sys_pkey_free sys_pkey_free
+# room for arch specific syscalls
+392 64 semtimedop sys_semtimedop -
+393 common semget sys_semget sys_semget
+394 common semctl sys_semctl compat_sys_semctl
+395 common shmget sys_shmget sys_shmget
+396 common shmctl sys_shmctl compat_sys_shmctl
+397 common shmat sys_shmat compat_sys_shmat
+398 common shmdt sys_shmdt sys_shmdt
+399 common msgget sys_msgget sys_msgget
+400 common msgsnd sys_msgsnd compat_sys_msgsnd
+401 common msgrcv sys_msgrcv compat_sys_msgrcv
+402 common msgctl sys_msgctl compat_sys_msgctl