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-rw-r--r--arch/s390/kernel/compat_wrapper.c209
1 files changed, 209 insertions, 0 deletions
diff --git a/arch/s390/kernel/compat_wrapper.c b/arch/s390/kernel/compat_wrapper.c
new file mode 100644
index 000000000000..d123f5d87b82
--- /dev/null
+++ b/arch/s390/kernel/compat_wrapper.c
@@ -0,0 +1,209 @@
1#include <linux/syscalls.h>
2#include <linux/compat.h>
3#include "entry.h"
4
5#define COMPAT_SYSCALL_WRAP1(name, ...) \
6 COMPAT_SYSCALL_WRAPx(1, _##name, __VA_ARGS__)
7#define COMPAT_SYSCALL_WRAP2(name, ...) \
8 COMPAT_SYSCALL_WRAPx(2, _##name, __VA_ARGS__)
9#define COMPAT_SYSCALL_WRAP3(name, ...) \
10 COMPAT_SYSCALL_WRAPx(3, _##name, __VA_ARGS__)
11#define COMPAT_SYSCALL_WRAP4(name, ...) \
12 COMPAT_SYSCALL_WRAPx(4, _##name, __VA_ARGS__)
13#define COMPAT_SYSCALL_WRAP5(name, ...) \
14 COMPAT_SYSCALL_WRAPx(5, _##name, __VA_ARGS__)
15#define COMPAT_SYSCALL_WRAP6(name, ...) \
16 COMPAT_SYSCALL_WRAPx(6, _##name, __VA_ARGS__)
17
18#define __SC_COMPAT_TYPE(t, a) \
19 __typeof(__builtin_choose_expr(sizeof(t) > 4, 0L, (t)0)) a
20
21#define __SC_COMPAT_CAST(t, a) \
22({ \
23 long __ReS = a; \
24 \
25 BUILD_BUG_ON((sizeof(t) > 4) && !__TYPE_IS_L(t) && \
26 !__TYPE_IS_UL(t) && !__TYPE_IS_PTR(t)); \
27 if (__TYPE_IS_L(t)) \
28 __ReS = (s32)a; \
29 if (__TYPE_IS_UL(t)) \
30 __ReS = (u32)a; \
31 if (__TYPE_IS_PTR(t)) \
32 __ReS = a & 0x7fffffff; \
33 (t)__ReS; \
34})
35
36/*
37 * The COMPAT_SYSCALL_WRAP macro generates system call wrappers to be used by
38 * compat tasks. These wrappers will only be used for system calls where only
39 * the system call arguments need sign or zero extension or zeroing of the upper
40 * 33 bits of pointers.
41 * Note: since the wrapper function will afterwards call a system call which
42 * again performs zero and sign extension for all system call arguments with
43 * a size of less than eight bytes, these compat wrappers only touch those
44 * system call arguments with a size of eight bytes ((unsigned) long and
45 * pointers). Zero and sign extension for e.g. int parameters will be done by
46 * the regular system call wrappers.
47 */
48#define COMPAT_SYSCALL_WRAPx(x, name, ...) \
49 asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
50 asmlinkage long compat_sys##name(__MAP(x,__SC_COMPAT_TYPE,__VA_ARGS__));\
51 asmlinkage long compat_sys##name(__MAP(x,__SC_COMPAT_TYPE,__VA_ARGS__)) \
52 { \
53 return sys##name(__MAP(x,__SC_COMPAT_CAST,__VA_ARGS__)); \
54 }
55
56COMPAT_SYSCALL_WRAP1(exit, int, error_code);
57COMPAT_SYSCALL_WRAP1(close, unsigned int, fd);
58COMPAT_SYSCALL_WRAP2(creat, const char __user *, pathname, umode_t, mode);
59COMPAT_SYSCALL_WRAP2(link, const char __user *, oldname, const char __user *, newname);
60COMPAT_SYSCALL_WRAP1(unlink, const char __user *, pathname);
61COMPAT_SYSCALL_WRAP1(chdir, const char __user *, filename);
62COMPAT_SYSCALL_WRAP3(mknod, const char __user *, filename, umode_t, mode, unsigned, dev);
63COMPAT_SYSCALL_WRAP2(chmod, const char __user *, filename, umode_t, mode);
64COMPAT_SYSCALL_WRAP1(oldumount, char __user *, name);
65COMPAT_SYSCALL_WRAP1(alarm, unsigned int, seconds);
66COMPAT_SYSCALL_WRAP2(access, const char __user *, filename, int, mode);
67COMPAT_SYSCALL_WRAP1(nice, int, increment);
68COMPAT_SYSCALL_WRAP2(kill, int, pid, int, sig);
69COMPAT_SYSCALL_WRAP2(rename, const char __user *, oldname, const char __user *, newname);
70COMPAT_SYSCALL_WRAP2(mkdir, const char __user *, pathname, umode_t, mode);
71COMPAT_SYSCALL_WRAP1(rmdir, const char __user *, pathname);
72COMPAT_SYSCALL_WRAP1(dup, unsigned int, fildes);
73COMPAT_SYSCALL_WRAP1(pipe, int __user *, fildes);
74COMPAT_SYSCALL_WRAP1(brk, unsigned long, brk);
75COMPAT_SYSCALL_WRAP2(signal, int, sig, __sighandler_t, handler);
76COMPAT_SYSCALL_WRAP1(acct, const char __user *, name);
77COMPAT_SYSCALL_WRAP2(umount, char __user *, name, int, flags);
78COMPAT_SYSCALL_WRAP2(setpgid, pid_t, pid, pid_t, pgid);
79COMPAT_SYSCALL_WRAP1(umask, int, mask);
80COMPAT_SYSCALL_WRAP1(chroot, const char __user *, filename);
81COMPAT_SYSCALL_WRAP2(dup2, unsigned int, oldfd, unsigned int, newfd);
82COMPAT_SYSCALL_WRAP3(sigsuspend, int, unused1, int, unused2, old_sigset_t, mask);
83COMPAT_SYSCALL_WRAP2(sethostname, char __user *, name, int, len);
84COMPAT_SYSCALL_WRAP2(symlink, const char __user *, old, const char __user *, new);
85COMPAT_SYSCALL_WRAP3(readlink, const char __user *, path, char __user *, buf, int, bufsiz);
86COMPAT_SYSCALL_WRAP1(uselib, const char __user *, library);
87COMPAT_SYSCALL_WRAP2(swapon, const char __user *, specialfile, int, swap_flags);
88COMPAT_SYSCALL_WRAP4(reboot, int, magic1, int, magic2, unsigned int, cmd, void __user *, arg);
89COMPAT_SYSCALL_WRAP2(munmap, unsigned long, addr, size_t, len);
90COMPAT_SYSCALL_WRAP2(fchmod, unsigned int, fd, umode_t, mode);
91COMPAT_SYSCALL_WRAP2(getpriority, int, which, int, who);
92COMPAT_SYSCALL_WRAP3(setpriority, int, which, int, who, int, niceval);
93COMPAT_SYSCALL_WRAP3(syslog, int, type, char __user *, buf, int, len);
94COMPAT_SYSCALL_WRAP1(swapoff, const char __user *, specialfile);
95COMPAT_SYSCALL_WRAP1(fsync, unsigned int, fd);
96COMPAT_SYSCALL_WRAP2(setdomainname, char __user *, name, int, len);
97COMPAT_SYSCALL_WRAP1(newuname, struct new_utsname __user *, name);
98COMPAT_SYSCALL_WRAP3(mprotect, unsigned long, start, size_t, len, unsigned long, prot);
99COMPAT_SYSCALL_WRAP3(init_module, void __user *, umod, unsigned long, len, const char __user *, uargs);
100COMPAT_SYSCALL_WRAP2(delete_module, const char __user *, name_user, unsigned int, flags);
101COMPAT_SYSCALL_WRAP4(quotactl, unsigned int, cmd, const char __user *, special, qid_t, id, void __user *, addr);
102COMPAT_SYSCALL_WRAP1(getpgid, pid_t, pid);
103COMPAT_SYSCALL_WRAP1(fchdir, unsigned int, fd);
104COMPAT_SYSCALL_WRAP2(bdflush, int, func, long, data);
105COMPAT_SYSCALL_WRAP3(sysfs, int, option, unsigned long, arg1, unsigned long, arg2);
106COMPAT_SYSCALL_WRAP1(s390_personality, unsigned int, personality);
107COMPAT_SYSCALL_WRAP5(llseek, unsigned int, fd, unsigned long, high, unsigned long, low, loff_t __user *, result, unsigned int, whence);
108COMPAT_SYSCALL_WRAP2(flock, unsigned int, fd, unsigned int, cmd);
109COMPAT_SYSCALL_WRAP3(msync, unsigned long, start, size_t, len, int, flags);
110COMPAT_SYSCALL_WRAP1(getsid, pid_t, pid);
111COMPAT_SYSCALL_WRAP1(fdatasync, unsigned int, fd);
112COMPAT_SYSCALL_WRAP2(mlock, unsigned long, start, size_t, len);
113COMPAT_SYSCALL_WRAP2(munlock, unsigned long, start, size_t, len);
114COMPAT_SYSCALL_WRAP1(mlockall, int, flags);
115COMPAT_SYSCALL_WRAP2(sched_setparam, pid_t, pid, struct sched_param __user *, param);
116COMPAT_SYSCALL_WRAP2(sched_getparam, pid_t, pid, struct sched_param __user *, param);
117COMPAT_SYSCALL_WRAP3(sched_setscheduler, pid_t, pid, int, policy, struct sched_param __user *, param);
118COMPAT_SYSCALL_WRAP1(sched_getscheduler, pid_t, pid);
119COMPAT_SYSCALL_WRAP1(sched_get_priority_max, int, policy);
120COMPAT_SYSCALL_WRAP1(sched_get_priority_min, int, policy);
121COMPAT_SYSCALL_WRAP5(mremap, unsigned long, addr, unsigned long, old_len, unsigned long, new_len, unsigned long, flags, unsigned long, new_addr);
122COMPAT_SYSCALL_WRAP3(poll, struct pollfd __user *, ufds, unsigned int, nfds, int, timeout);
123COMPAT_SYSCALL_WRAP5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, unsigned long, arg4, unsigned long, arg5);
124COMPAT_SYSCALL_WRAP2(getcwd, char __user *, buf, unsigned long, size);
125COMPAT_SYSCALL_WRAP2(capget, cap_user_header_t, header, cap_user_data_t, dataptr);
126COMPAT_SYSCALL_WRAP2(capset, cap_user_header_t, header, const cap_user_data_t, data);
127COMPAT_SYSCALL_WRAP3(lchown, const char __user *, filename, uid_t, user, gid_t, group);
128COMPAT_SYSCALL_WRAP2(setreuid, uid_t, ruid, uid_t, euid);
129COMPAT_SYSCALL_WRAP2(setregid, gid_t, rgid, gid_t, egid);
130COMPAT_SYSCALL_WRAP2(getgroups, int, gidsetsize, gid_t __user *, grouplist);
131COMPAT_SYSCALL_WRAP2(setgroups, int, gidsetsize, gid_t __user *, grouplist);
132COMPAT_SYSCALL_WRAP3(fchown, unsigned int, fd, uid_t, user, gid_t, group);
133COMPAT_SYSCALL_WRAP3(setresuid, uid_t, ruid, uid_t, euid, uid_t, suid);
134COMPAT_SYSCALL_WRAP3(getresuid, uid_t __user *, ruid, uid_t __user *, euid, uid_t __user *, suid);
135COMPAT_SYSCALL_WRAP3(setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid);
136COMPAT_SYSCALL_WRAP3(getresgid, gid_t __user *, rgid, gid_t __user *, egid, gid_t __user *, sgid);
137COMPAT_SYSCALL_WRAP3(chown, const char __user *, filename, uid_t, user, gid_t, group);
138COMPAT_SYSCALL_WRAP1(setuid, uid_t, uid);
139COMPAT_SYSCALL_WRAP1(setgid, gid_t, gid);
140COMPAT_SYSCALL_WRAP1(setfsuid, uid_t, uid);
141COMPAT_SYSCALL_WRAP1(setfsgid, gid_t, gid);
142COMPAT_SYSCALL_WRAP2(pivot_root, const char __user *, new_root, const char __user *, put_old);
143COMPAT_SYSCALL_WRAP3(mincore, unsigned long, start, size_t, len, unsigned char __user *, vec);
144COMPAT_SYSCALL_WRAP3(madvise, unsigned long, start, size_t, len, int, behavior);
145COMPAT_SYSCALL_WRAP5(setxattr, const char __user *, path, const char __user *, name, const void __user *, value, size_t, size, int, flags);
146COMPAT_SYSCALL_WRAP5(lsetxattr, const char __user *, path, const char __user *, name, const void __user *, value, size_t, size, int, flags);
147COMPAT_SYSCALL_WRAP5(fsetxattr, int, fd, const char __user *, name, const void __user *, value, size_t, size, int, flags);
148COMPAT_SYSCALL_WRAP3(getdents64, unsigned int, fd, struct linux_dirent64 __user *, dirent, unsigned int, count);
149COMPAT_SYSCALL_WRAP4(getxattr, const char __user *, path, const char __user *, name, void __user *, value, size_t, size);
150COMPAT_SYSCALL_WRAP4(lgetxattr, const char __user *, path, const char __user *, name, void __user *, value, size_t, size);
151COMPAT_SYSCALL_WRAP4(fgetxattr, int, fd, const char __user *, name, void __user *, value, size_t, size);
152COMPAT_SYSCALL_WRAP3(listxattr, const char __user *, path, char __user *, list, size_t, size);
153COMPAT_SYSCALL_WRAP3(llistxattr, const char __user *, path, char __user *, list, size_t, size);
154COMPAT_SYSCALL_WRAP3(flistxattr, int, fd, char __user *, list, size_t, size);
155COMPAT_SYSCALL_WRAP2(removexattr, const char __user *, path, const char __user *, name);
156COMPAT_SYSCALL_WRAP2(lremovexattr, const char __user *, path, const char __user *, name);
157COMPAT_SYSCALL_WRAP2(fremovexattr, int, fd, const char __user *, name);
158COMPAT_SYSCALL_WRAP1(exit_group, int, error_code);
159COMPAT_SYSCALL_WRAP1(set_tid_address, int __user *, tidptr);
160COMPAT_SYSCALL_WRAP1(epoll_create, int, size);
161COMPAT_SYSCALL_WRAP4(epoll_ctl, int, epfd, int, op, int, fd, struct epoll_event __user *, event);
162COMPAT_SYSCALL_WRAP4(epoll_wait, int, epfd, struct epoll_event __user *, events, int, maxevents, int, timeout);
163COMPAT_SYSCALL_WRAP1(timer_getoverrun, timer_t, timer_id);
164COMPAT_SYSCALL_WRAP1(timer_delete, compat_timer_t, compat_timer_id);
165COMPAT_SYSCALL_WRAP1(io_destroy, aio_context_t, ctx);
166COMPAT_SYSCALL_WRAP3(io_cancel, aio_context_t, ctx_id, struct iocb __user *, iocb, struct io_event __user *, result);
167COMPAT_SYSCALL_WRAP1(mq_unlink, const char __user *, name);
168COMPAT_SYSCALL_WRAP5(add_key, const char __user *, tp, const char __user *, dsc, const void __user *, pld, size_t, len, key_serial_t, id);
169COMPAT_SYSCALL_WRAP4(request_key, const char __user *, tp, const char __user *, dsc, const char __user *, info, key_serial_t, id);
170COMPAT_SYSCALL_WRAP5(remap_file_pages, unsigned long, start, unsigned long, size, unsigned long, prot, unsigned long, pgoff, unsigned long, flags);
171COMPAT_SYSCALL_WRAP3(ioprio_set, int, which, int, who, int, ioprio);
172COMPAT_SYSCALL_WRAP2(ioprio_get, int, which, int, who);
173COMPAT_SYSCALL_WRAP3(inotify_add_watch, int, fd, const char __user *, path, u32, mask);
174COMPAT_SYSCALL_WRAP2(inotify_rm_watch, int, fd, __s32, wd);
175COMPAT_SYSCALL_WRAP3(mkdirat, int, dfd, const char __user *, pathname, umode_t, mode);
176COMPAT_SYSCALL_WRAP4(mknodat, int, dfd, const char __user *, filename, umode_t, mode, unsigned, dev);
177COMPAT_SYSCALL_WRAP5(fchownat, int, dfd, const char __user *, filename, uid_t, user, gid_t, group, int, flag);
178COMPAT_SYSCALL_WRAP3(unlinkat, int, dfd, const char __user *, pathname, int, flag);
179COMPAT_SYSCALL_WRAP4(renameat, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname);
180COMPAT_SYSCALL_WRAP5(linkat, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname, int, flags);
181COMPAT_SYSCALL_WRAP3(symlinkat, const char __user *, oldname, int, newdfd, const char __user *, newname);
182COMPAT_SYSCALL_WRAP4(readlinkat, int, dfd, const char __user *, path, char __user *, buf, int, bufsiz);
183COMPAT_SYSCALL_WRAP3(fchmodat, int, dfd, const char __user *, filename, umode_t, mode);
184COMPAT_SYSCALL_WRAP3(faccessat, int, dfd, const char __user *, filename, int, mode);
185COMPAT_SYSCALL_WRAP1(unshare, unsigned long, unshare_flags);
186COMPAT_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);
187COMPAT_SYSCALL_WRAP4(tee, int, fdin, int, fdout, size_t, len, unsigned int, flags);
188COMPAT_SYSCALL_WRAP3(getcpu, unsigned __user *, cpu, unsigned __user *, node, struct getcpu_cache __user *, cache);
189COMPAT_SYSCALL_WRAP1(eventfd, unsigned int, count);
190COMPAT_SYSCALL_WRAP2(timerfd_create, int, clockid, int, flags);
191COMPAT_SYSCALL_WRAP2(eventfd2, unsigned int, count, int, flags);
192COMPAT_SYSCALL_WRAP1(inotify_init1, int, flags);
193COMPAT_SYSCALL_WRAP2(pipe2, int __user *, fildes, int, flags);
194COMPAT_SYSCALL_WRAP3(dup3, unsigned int, oldfd, unsigned int, newfd, int, flags);
195COMPAT_SYSCALL_WRAP1(epoll_create1, int, flags);
196COMPAT_SYSCALL_WRAP2(tkill, int, pid, int, sig);
197COMPAT_SYSCALL_WRAP3(tgkill, int, tgid, int, pid, int, sig);
198COMPAT_SYSCALL_WRAP5(perf_event_open, struct perf_event_attr __user *, attr_uptr, pid_t, pid, int, cpu, int, group_fd, unsigned long, flags);
199COMPAT_SYSCALL_WRAP5(clone, unsigned long, newsp, unsigned long, clone_flags, int __user *, parent_tidptr, int __user *, child_tidptr, int, tls_val);
200COMPAT_SYSCALL_WRAP2(fanotify_init, unsigned int, flags, unsigned int, event_f_flags);
201COMPAT_SYSCALL_WRAP4(prlimit64, pid_t, pid, unsigned int, resource, const struct rlimit64 __user *, new_rlim, struct rlimit64 __user *, old_rlim);
202COMPAT_SYSCALL_WRAP5(name_to_handle_at, int, dfd, const char __user *, name, struct file_handle __user *, handle, int __user *, mnt_id, int, flag);
203COMPAT_SYSCALL_WRAP1(syncfs, int, fd);
204COMPAT_SYSCALL_WRAP2(setns, int, fd, int, nstype);
205COMPAT_SYSCALL_WRAP2(s390_runtime_instr, int, command, int, signum);
206COMPAT_SYSCALL_WRAP5(kcmp, pid_t, pid1, pid_t, pid2, int, type, unsigned long, idx1, unsigned long, idx2);
207COMPAT_SYSCALL_WRAP3(finit_module, int, fd, const char __user *, uargs, int, flags);
208COMPAT_SYSCALL_WRAP3(sched_setattr, pid_t, pid, struct sched_attr __user *, attr, unsigned int, flags);
209COMPAT_SYSCALL_WRAP4(sched_getattr, pid_t, pid, struct sched_attr __user *, attr, unsigned int, size, unsigned int, flags);
generated by cgit v1.2.2 (git 2.25.0) at 2025-10-01 08:45:09 -0400