Root/arch/s390/kernel/compat_linux.h

1#ifndef _ASM_S390X_S390_H
2#define _ASM_S390X_S390_H
3
4#include <linux/compat.h>
5#include <linux/socket.h>
6#include <linux/syscalls.h>
7
8/* Macro that masks the high order bit of an 32 bit pointer and converts it*/
9/* to a 64 bit pointer */
10#define A(__x) ((unsigned long)((__x) & 0x7FFFFFFFUL))
11#define AA(__x) \
12    ((unsigned long)(__x))
13
14/* Now 32bit compatibility types */
15struct ipc_kludge_32 {
16        __u32 msgp; /* pointer */
17        __s32 msgtyp;
18};
19
20struct old_sigaction32 {
21       __u32 sa_handler; /* Really a pointer, but need to deal with 32 bits */
22       compat_old_sigset_t sa_mask; /* A 32 bit mask */
23       __u32 sa_flags;
24       __u32 sa_restorer; /* Another 32 bit pointer */
25};
26 
27typedef struct compat_siginfo {
28    int si_signo;
29    int si_errno;
30    int si_code;
31
32    union {
33        int _pad[((128/sizeof(int)) - 3)];
34
35        /* kill() */
36        struct {
37            pid_t _pid; /* sender's pid */
38            uid_t _uid; /* sender's uid */
39        } _kill;
40
41        /* POSIX.1b timers */
42        struct {
43            compat_timer_t _tid; /* timer id */
44            int _overrun; /* overrun count */
45            compat_sigval_t _sigval; /* same as below */
46            int _sys_private; /* not to be passed to user */
47        } _timer;
48
49        /* POSIX.1b signals */
50        struct {
51            pid_t _pid; /* sender's pid */
52            uid_t _uid; /* sender's uid */
53            compat_sigval_t _sigval;
54        } _rt;
55
56        /* SIGCHLD */
57        struct {
58            pid_t _pid; /* which child */
59            uid_t _uid; /* sender's uid */
60            int _status;/* exit code */
61            compat_clock_t _utime;
62            compat_clock_t _stime;
63        } _sigchld;
64
65        /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
66        struct {
67            __u32 _addr; /* faulting insn/memory ref. - pointer */
68        } _sigfault;
69                          
70        /* SIGPOLL */
71        struct {
72            int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
73            int _fd;
74        } _sigpoll;
75    } _sifields;
76} compat_siginfo_t;
77
78/*
79 * How these fields are to be accessed.
80 */
81#define si_pid _sifields._kill._pid
82#define si_uid _sifields._kill._uid
83#define si_status _sifields._sigchld._status
84#define si_utime _sifields._sigchld._utime
85#define si_stime _sifields._sigchld._stime
86#define si_value _sifields._rt._sigval
87#define si_int _sifields._rt._sigval.sival_int
88#define si_ptr _sifields._rt._sigval.sival_ptr
89#define si_addr _sifields._sigfault._addr
90#define si_band _sifields._sigpoll._band
91#define si_fd _sifields._sigpoll._fd
92#define si_tid _sifields._timer._tid
93#define si_overrun _sifields._timer._overrun
94
95/* asm/sigcontext.h */
96typedef union
97{
98    __u64 d;
99    __u32 f;
100} freg_t32;
101
102typedef struct
103{
104    unsigned int fpc;
105    freg_t32 fprs[__NUM_FPRS];
106} _s390_fp_regs32;
107
108typedef struct
109{
110        __u32 mask;
111        __u32 addr;
112} _psw_t32 __attribute__ ((aligned(8)));
113
114typedef struct
115{
116    _psw_t32 psw;
117    __u32 gprs[__NUM_GPRS];
118    __u32 acrs[__NUM_ACRS];
119} _s390_regs_common32;
120
121typedef struct
122{
123    _s390_regs_common32 regs;
124    _s390_fp_regs32 fpregs;
125} _sigregs32;
126
127#define _SIGCONTEXT_NSIG32 64
128#define _SIGCONTEXT_NSIG_BPW32 32
129#define __SIGNAL_FRAMESIZE32 96
130#define _SIGMASK_COPY_SIZE32 (sizeof(u32)*2)
131
132struct sigcontext32
133{
134    __u32 oldmask[_COMPAT_NSIG_WORDS];
135    __u32 sregs; /* pointer */
136};
137
138/* asm/signal.h */
139struct sigaction32 {
140    __u32 sa_handler; /* pointer */
141    __u32 sa_flags;
142        __u32 sa_restorer; /* pointer */
143    compat_sigset_t sa_mask; /* mask last for extensibility */
144};
145
146typedef struct {
147    __u32 ss_sp; /* pointer */
148    int ss_flags;
149    compat_size_t ss_size;
150} stack_t32;
151
152/* asm/ucontext.h */
153struct ucontext32 {
154    __u32 uc_flags;
155    __u32 uc_link; /* pointer */
156    stack_t32 uc_stack;
157    _sigregs32 uc_mcontext;
158    compat_sigset_t uc_sigmask; /* mask last for extensibility */
159};
160
161struct stat64_emu31;
162struct mmap_arg_struct_emu31;
163struct fadvise64_64_args;
164struct old_sigaction32;
165struct old_sigaction32;
166
167long sys32_chown16(const char __user * filename, u16 user, u16 group);
168long sys32_lchown16(const char __user * filename, u16 user, u16 group);
169long sys32_fchown16(unsigned int fd, u16 user, u16 group);
170long sys32_setregid16(u16 rgid, u16 egid);
171long sys32_setgid16(u16 gid);
172long sys32_setreuid16(u16 ruid, u16 euid);
173long sys32_setuid16(u16 uid);
174long sys32_setresuid16(u16 ruid, u16 euid, u16 suid);
175long sys32_getresuid16(u16 __user *ruid, u16 __user *euid, u16 __user *suid);
176long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid);
177long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user *sgid);
178long sys32_setfsuid16(u16 uid);
179long sys32_setfsgid16(u16 gid);
180long sys32_getgroups16(int gidsetsize, u16 __user *grouplist);
181long sys32_setgroups16(int gidsetsize, u16 __user *grouplist);
182long sys32_getuid16(void);
183long sys32_geteuid16(void);
184long sys32_getgid16(void);
185long sys32_getegid16(void);
186long sys32_ipc(u32 call, int first, int second, int third, u32 ptr);
187long sys32_truncate64(const char __user * path, unsigned long high,
188              unsigned long low);
189long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low);
190long sys32_sched_rr_get_interval(compat_pid_t pid,
191                 struct compat_timespec __user *interval);
192long sys32_rt_sigprocmask(int how, compat_sigset_t __user *set,
193              compat_sigset_t __user *oset, size_t sigsetsize);
194long sys32_rt_sigpending(compat_sigset_t __user *set, size_t sigsetsize);
195long sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo);
196long sys32_execve(const char __user *name, compat_uptr_t __user *argv,
197          compat_uptr_t __user *envp);
198long sys32_init_module(void __user *umod, unsigned long len,
199               const char __user *uargs);
200long sys32_delete_module(const char __user *name_user, unsigned int flags);
201long sys32_pread64(unsigned int fd, char __user *ubuf, size_t count,
202           u32 poshi, u32 poslo);
203long sys32_pwrite64(unsigned int fd, const char __user *ubuf,
204            size_t count, u32 poshi, u32 poslo);
205compat_ssize_t sys32_readahead(int fd, u32 offhi, u32 offlo, s32 count);
206long sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset,
207            size_t count);
208long sys32_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset,
209              s32 count);
210long sys32_stat64(const char __user * filename, struct stat64_emu31 __user * statbuf);
211long sys32_lstat64(const char __user * filename,
212           struct stat64_emu31 __user * statbuf);
213long sys32_fstat64(unsigned long fd, struct stat64_emu31 __user * statbuf);
214long sys32_fstatat64(unsigned int dfd, const char __user *filename,
215             struct stat64_emu31 __user* statbuf, int flag);
216unsigned long old32_mmap(struct mmap_arg_struct_emu31 __user *arg);
217long sys32_mmap2(struct mmap_arg_struct_emu31 __user *arg);
218long sys32_read(unsigned int fd, char __user * buf, size_t count);
219long sys32_write(unsigned int fd, const char __user * buf, size_t count);
220long sys32_fadvise64(int fd, loff_t offset, size_t len, int advise);
221long sys32_fadvise64_64(struct fadvise64_64_args __user *args);
222long sys32_sigaction(int sig, const struct old_sigaction32 __user *act,
223             struct old_sigaction32 __user *oact);
224long sys32_rt_sigaction(int sig, const struct sigaction32 __user *act,
225            struct sigaction32 __user *oact, size_t sigsetsize);
226long sys32_sigaltstack(const stack_t32 __user *uss, stack_t32 __user *uoss);
227#endif /* _ASM_S390X_S390_H */
228

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