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3d8757b87d
Add a syscall of s390_sthyi to implement STHYI instruction in LPAR
which reuses the implementation for KVM by Janosch Frank -
commit 95ca2cb579 ("KVM: s390: Add sthyi emulation").
STHYI(Store Hypervisor Information) is an emulated z/VM instruction that
provides a guest with basic information about the layers it is running
on. This includes information about the cpu configuration of both the
machine and the lpar, as well as their names, machine model and
machine type. This information enables an application to determine the
maximum capacity of CPs and IFLs available to software.
For the arguments of s390_sthyi, code shall be 0 and flags is reserved for
future use, info is the output argument to store the required hypervisor
info.
Signed-off-by: QingFeng Hao <haoqf@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
184 lines
13 KiB
C
184 lines
13 KiB
C
/*
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* Compat system call wrappers.
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*
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* Copyright IBM Corp. 2014
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*/
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#include <linux/syscalls.h>
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#include <linux/compat.h>
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#include "entry.h"
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#define COMPAT_SYSCALL_WRAP1(name, ...) \
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COMPAT_SYSCALL_WRAPx(1, _##name, __VA_ARGS__)
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#define COMPAT_SYSCALL_WRAP2(name, ...) \
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COMPAT_SYSCALL_WRAPx(2, _##name, __VA_ARGS__)
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#define COMPAT_SYSCALL_WRAP3(name, ...) \
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COMPAT_SYSCALL_WRAPx(3, _##name, __VA_ARGS__)
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#define COMPAT_SYSCALL_WRAP4(name, ...) \
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COMPAT_SYSCALL_WRAPx(4, _##name, __VA_ARGS__)
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#define COMPAT_SYSCALL_WRAP5(name, ...) \
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COMPAT_SYSCALL_WRAPx(5, _##name, __VA_ARGS__)
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#define COMPAT_SYSCALL_WRAP6(name, ...) \
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COMPAT_SYSCALL_WRAPx(6, _##name, __VA_ARGS__)
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#define __SC_COMPAT_TYPE(t, a) \
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__typeof(__builtin_choose_expr(sizeof(t) > 4, 0L, (t)0)) a
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#define __SC_COMPAT_CAST(t, a) \
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({ \
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long __ReS = a; \
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\
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BUILD_BUG_ON((sizeof(t) > 4) && !__TYPE_IS_L(t) && \
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!__TYPE_IS_UL(t) && !__TYPE_IS_PTR(t)); \
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if (__TYPE_IS_L(t)) \
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__ReS = (s32)a; \
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if (__TYPE_IS_UL(t)) \
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__ReS = (u32)a; \
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if (__TYPE_IS_PTR(t)) \
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__ReS = a & 0x7fffffff; \
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(t)__ReS; \
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})
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/*
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* The COMPAT_SYSCALL_WRAP macro generates system call wrappers to be used by
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* compat tasks. These wrappers will only be used for system calls where only
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* the system call arguments need sign or zero extension or zeroing of the upper
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* 33 bits of pointers.
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* Note: since the wrapper function will afterwards call a system call which
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* again performs zero and sign extension for all system call arguments with
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* a size of less than eight bytes, these compat wrappers only touch those
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* system call arguments with a size of eight bytes ((unsigned) long and
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* pointers). Zero and sign extension for e.g. int parameters will be done by
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* the regular system call wrappers.
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*/
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#define COMPAT_SYSCALL_WRAPx(x, name, ...) \
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asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
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asmlinkage long notrace compat_sys##name(__MAP(x,__SC_COMPAT_TYPE,__VA_ARGS__));\
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asmlinkage long notrace compat_sys##name(__MAP(x,__SC_COMPAT_TYPE,__VA_ARGS__)) \
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{ \
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return sys##name(__MAP(x,__SC_COMPAT_CAST,__VA_ARGS__)); \
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}
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COMPAT_SYSCALL_WRAP2(creat, const char __user *, pathname, umode_t, mode);
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COMPAT_SYSCALL_WRAP2(link, const char __user *, oldname, const char __user *, newname);
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COMPAT_SYSCALL_WRAP1(unlink, const char __user *, pathname);
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COMPAT_SYSCALL_WRAP1(chdir, const char __user *, filename);
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COMPAT_SYSCALL_WRAP3(mknod, const char __user *, filename, umode_t, mode, unsigned, dev);
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COMPAT_SYSCALL_WRAP2(chmod, const char __user *, filename, umode_t, mode);
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COMPAT_SYSCALL_WRAP1(oldumount, char __user *, name);
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COMPAT_SYSCALL_WRAP2(access, const char __user *, filename, int, mode);
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COMPAT_SYSCALL_WRAP2(rename, const char __user *, oldname, const char __user *, newname);
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COMPAT_SYSCALL_WRAP2(mkdir, const char __user *, pathname, umode_t, mode);
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COMPAT_SYSCALL_WRAP1(rmdir, const char __user *, pathname);
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COMPAT_SYSCALL_WRAP1(pipe, int __user *, fildes);
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COMPAT_SYSCALL_WRAP1(brk, unsigned long, brk);
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COMPAT_SYSCALL_WRAP2(signal, int, sig, __sighandler_t, handler);
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COMPAT_SYSCALL_WRAP1(acct, const char __user *, name);
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COMPAT_SYSCALL_WRAP2(umount, char __user *, name, int, flags);
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COMPAT_SYSCALL_WRAP1(chroot, const char __user *, filename);
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COMPAT_SYSCALL_WRAP3(sigsuspend, int, unused1, int, unused2, old_sigset_t, mask);
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COMPAT_SYSCALL_WRAP2(sethostname, char __user *, name, int, len);
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COMPAT_SYSCALL_WRAP2(symlink, const char __user *, old, const char __user *, new);
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COMPAT_SYSCALL_WRAP3(readlink, const char __user *, path, char __user *, buf, int, bufsiz);
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COMPAT_SYSCALL_WRAP1(uselib, const char __user *, library);
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COMPAT_SYSCALL_WRAP2(swapon, const char __user *, specialfile, int, swap_flags);
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COMPAT_SYSCALL_WRAP4(reboot, int, magic1, int, magic2, unsigned int, cmd, void __user *, arg);
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COMPAT_SYSCALL_WRAP2(munmap, unsigned long, addr, size_t, len);
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COMPAT_SYSCALL_WRAP3(syslog, int, type, char __user *, buf, int, len);
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COMPAT_SYSCALL_WRAP1(swapoff, const char __user *, specialfile);
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COMPAT_SYSCALL_WRAP2(setdomainname, char __user *, name, int, len);
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COMPAT_SYSCALL_WRAP1(newuname, struct new_utsname __user *, name);
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COMPAT_SYSCALL_WRAP3(mprotect, unsigned long, start, size_t, len, unsigned long, prot);
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COMPAT_SYSCALL_WRAP3(init_module, void __user *, umod, unsigned long, len, const char __user *, uargs);
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COMPAT_SYSCALL_WRAP2(delete_module, const char __user *, name_user, unsigned int, flags);
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COMPAT_SYSCALL_WRAP4(quotactl, unsigned int, cmd, const char __user *, special, qid_t, id, void __user *, addr);
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COMPAT_SYSCALL_WRAP2(bdflush, int, func, long, data);
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COMPAT_SYSCALL_WRAP3(sysfs, int, option, unsigned long, arg1, unsigned long, arg2);
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COMPAT_SYSCALL_WRAP5(llseek, unsigned int, fd, unsigned long, high, unsigned long, low, loff_t __user *, result, unsigned int, whence);
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COMPAT_SYSCALL_WRAP3(msync, unsigned long, start, size_t, len, int, flags);
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COMPAT_SYSCALL_WRAP2(mlock, unsigned long, start, size_t, len);
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COMPAT_SYSCALL_WRAP2(munlock, unsigned long, start, size_t, len);
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COMPAT_SYSCALL_WRAP2(sched_setparam, pid_t, pid, struct sched_param __user *, param);
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COMPAT_SYSCALL_WRAP2(sched_getparam, pid_t, pid, struct sched_param __user *, param);
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COMPAT_SYSCALL_WRAP3(sched_setscheduler, pid_t, pid, int, policy, struct sched_param __user *, param);
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COMPAT_SYSCALL_WRAP5(mremap, unsigned long, addr, unsigned long, old_len, unsigned long, new_len, unsigned long, flags, unsigned long, new_addr);
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COMPAT_SYSCALL_WRAP3(poll, struct pollfd __user *, ufds, unsigned int, nfds, int, timeout);
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COMPAT_SYSCALL_WRAP5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, unsigned long, arg4, unsigned long, arg5);
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COMPAT_SYSCALL_WRAP2(getcwd, char __user *, buf, unsigned long, size);
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COMPAT_SYSCALL_WRAP2(capget, cap_user_header_t, header, cap_user_data_t, dataptr);
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COMPAT_SYSCALL_WRAP2(capset, cap_user_header_t, header, const cap_user_data_t, data);
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COMPAT_SYSCALL_WRAP3(lchown, const char __user *, filename, uid_t, user, gid_t, group);
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COMPAT_SYSCALL_WRAP2(getgroups, int, gidsetsize, gid_t __user *, grouplist);
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COMPAT_SYSCALL_WRAP2(setgroups, int, gidsetsize, gid_t __user *, grouplist);
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COMPAT_SYSCALL_WRAP3(getresuid, uid_t __user *, ruid, uid_t __user *, euid, uid_t __user *, suid);
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COMPAT_SYSCALL_WRAP3(getresgid, gid_t __user *, rgid, gid_t __user *, egid, gid_t __user *, sgid);
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COMPAT_SYSCALL_WRAP3(chown, const char __user *, filename, uid_t, user, gid_t, group);
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COMPAT_SYSCALL_WRAP2(pivot_root, const char __user *, new_root, const char __user *, put_old);
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COMPAT_SYSCALL_WRAP3(mincore, unsigned long, start, size_t, len, unsigned char __user *, vec);
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COMPAT_SYSCALL_WRAP3(madvise, unsigned long, start, size_t, len, int, behavior);
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COMPAT_SYSCALL_WRAP5(setxattr, const char __user *, path, const char __user *, name, const void __user *, value, size_t, size, int, flags);
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COMPAT_SYSCALL_WRAP5(lsetxattr, const char __user *, path, const char __user *, name, const void __user *, value, size_t, size, int, flags);
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COMPAT_SYSCALL_WRAP5(fsetxattr, int, fd, const char __user *, name, const void __user *, value, size_t, size, int, flags);
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COMPAT_SYSCALL_WRAP3(getdents64, unsigned int, fd, struct linux_dirent64 __user *, dirent, unsigned int, count);
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COMPAT_SYSCALL_WRAP4(getxattr, const char __user *, path, const char __user *, name, void __user *, value, size_t, size);
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COMPAT_SYSCALL_WRAP4(lgetxattr, const char __user *, path, const char __user *, name, void __user *, value, size_t, size);
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COMPAT_SYSCALL_WRAP4(fgetxattr, int, fd, const char __user *, name, void __user *, value, size_t, size);
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COMPAT_SYSCALL_WRAP3(listxattr, const char __user *, path, char __user *, list, size_t, size);
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COMPAT_SYSCALL_WRAP3(llistxattr, const char __user *, path, char __user *, list, size_t, size);
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COMPAT_SYSCALL_WRAP3(flistxattr, int, fd, char __user *, list, size_t, size);
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COMPAT_SYSCALL_WRAP2(removexattr, const char __user *, path, const char __user *, name);
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COMPAT_SYSCALL_WRAP2(lremovexattr, const char __user *, path, const char __user *, name);
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COMPAT_SYSCALL_WRAP2(fremovexattr, int, fd, const char __user *, name);
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COMPAT_SYSCALL_WRAP1(set_tid_address, int __user *, tidptr);
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COMPAT_SYSCALL_WRAP4(epoll_ctl, int, epfd, int, op, int, fd, struct epoll_event __user *, event);
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COMPAT_SYSCALL_WRAP4(epoll_wait, int, epfd, struct epoll_event __user *, events, int, maxevents, int, timeout);
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COMPAT_SYSCALL_WRAP1(io_destroy, aio_context_t, ctx);
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COMPAT_SYSCALL_WRAP3(io_cancel, aio_context_t, ctx_id, struct iocb __user *, iocb, struct io_event __user *, result);
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COMPAT_SYSCALL_WRAP1(mq_unlink, const char __user *, name);
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COMPAT_SYSCALL_WRAP5(add_key, const char __user *, tp, const char __user *, dsc, const void __user *, pld, size_t, len, key_serial_t, id);
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COMPAT_SYSCALL_WRAP4(request_key, const char __user *, tp, const char __user *, dsc, const char __user *, info, key_serial_t, id);
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COMPAT_SYSCALL_WRAP5(remap_file_pages, unsigned long, start, unsigned long, size, unsigned long, prot, unsigned long, pgoff, unsigned long, flags);
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COMPAT_SYSCALL_WRAP3(inotify_add_watch, int, fd, const char __user *, path, u32, mask);
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COMPAT_SYSCALL_WRAP3(mkdirat, int, dfd, const char __user *, pathname, umode_t, mode);
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COMPAT_SYSCALL_WRAP4(mknodat, int, dfd, const char __user *, filename, umode_t, mode, unsigned, dev);
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COMPAT_SYSCALL_WRAP5(fchownat, int, dfd, const char __user *, filename, uid_t, user, gid_t, group, int, flag);
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COMPAT_SYSCALL_WRAP3(unlinkat, int, dfd, const char __user *, pathname, int, flag);
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COMPAT_SYSCALL_WRAP4(renameat, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname);
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COMPAT_SYSCALL_WRAP5(linkat, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname, int, flags);
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COMPAT_SYSCALL_WRAP3(symlinkat, const char __user *, oldname, int, newdfd, const char __user *, newname);
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COMPAT_SYSCALL_WRAP4(readlinkat, int, dfd, const char __user *, path, char __user *, buf, int, bufsiz);
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COMPAT_SYSCALL_WRAP3(fchmodat, int, dfd, const char __user *, filename, umode_t, mode);
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COMPAT_SYSCALL_WRAP3(faccessat, int, dfd, const char __user *, filename, int, mode);
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COMPAT_SYSCALL_WRAP1(unshare, unsigned long, unshare_flags);
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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);
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COMPAT_SYSCALL_WRAP4(tee, int, fdin, int, fdout, size_t, len, unsigned int, flags);
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COMPAT_SYSCALL_WRAP3(getcpu, unsigned __user *, cpu, unsigned __user *, node, struct getcpu_cache __user *, cache);
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COMPAT_SYSCALL_WRAP2(pipe2, int __user *, fildes, int, flags);
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COMPAT_SYSCALL_WRAP5(perf_event_open, struct perf_event_attr __user *, attr_uptr, pid_t, pid, int, cpu, int, group_fd, unsigned long, flags);
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COMPAT_SYSCALL_WRAP5(clone, unsigned long, newsp, unsigned long, clone_flags, int __user *, parent_tidptr, int __user *, child_tidptr, unsigned long, tls);
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COMPAT_SYSCALL_WRAP4(prlimit64, pid_t, pid, unsigned int, resource, const struct rlimit64 __user *, new_rlim, struct rlimit64 __user *, old_rlim);
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COMPAT_SYSCALL_WRAP5(name_to_handle_at, int, dfd, const char __user *, name, struct file_handle __user *, handle, int __user *, mnt_id, int, flag);
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COMPAT_SYSCALL_WRAP5(kcmp, pid_t, pid1, pid_t, pid2, int, type, unsigned long, idx1, unsigned long, idx2);
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COMPAT_SYSCALL_WRAP3(finit_module, int, fd, const char __user *, uargs, int, flags);
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COMPAT_SYSCALL_WRAP3(sched_setattr, pid_t, pid, struct sched_attr __user *, attr, unsigned int, flags);
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COMPAT_SYSCALL_WRAP4(sched_getattr, pid_t, pid, struct sched_attr __user *, attr, unsigned int, size, unsigned int, flags);
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COMPAT_SYSCALL_WRAP5(renameat2, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname, unsigned int, flags);
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COMPAT_SYSCALL_WRAP3(seccomp, unsigned int, op, unsigned int, flags, const char __user *, uargs)
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COMPAT_SYSCALL_WRAP3(getrandom, char __user *, buf, size_t, count, unsigned int, flags)
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COMPAT_SYSCALL_WRAP2(memfd_create, const char __user *, uname, unsigned int, flags)
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COMPAT_SYSCALL_WRAP3(bpf, int, cmd, union bpf_attr *, attr, unsigned int, size);
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COMPAT_SYSCALL_WRAP3(s390_pci_mmio_write, const unsigned long, mmio_addr, const void __user *, user_buffer, const size_t, length);
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COMPAT_SYSCALL_WRAP3(s390_pci_mmio_read, const unsigned long, mmio_addr, void __user *, user_buffer, const size_t, length);
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COMPAT_SYSCALL_WRAP4(socketpair, int, family, int, type, int, protocol, int __user *, usockvec);
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COMPAT_SYSCALL_WRAP3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen);
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COMPAT_SYSCALL_WRAP3(connect, int, fd, struct sockaddr __user *, uservaddr, int, addrlen);
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COMPAT_SYSCALL_WRAP4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr, int __user *, upeer_addrlen, int, flags);
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COMPAT_SYSCALL_WRAP3(getsockname, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len);
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COMPAT_SYSCALL_WRAP3(getpeername, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len);
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COMPAT_SYSCALL_WRAP6(sendto, int, fd, void __user *, buff, size_t, len, unsigned int, flags, struct sockaddr __user *, addr, int, addr_len);
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COMPAT_SYSCALL_WRAP3(mlock2, unsigned long, start, size_t, len, int, flags);
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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);
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COMPAT_SYSCALL_WRAP2(s390_guarded_storage, int, command, struct gs_cb *, gs_cb);
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COMPAT_SYSCALL_WRAP5(statx, int, dfd, const char __user *, path, unsigned, flags, unsigned, mask, struct statx __user *, buffer);
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COMPAT_SYSCALL_WRAP4(s390_sthyi, unsigned long, code, void __user *, info, u64 __user *, rc, unsigned long, flags);
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