1 #ifndef _LINUX_COMPAT_H 2 #define _LINUX_COMPAT_H 3 /* 4 * These are the type definitions for the architecture specific 5 * syscall compatibility layer. 6 */ 7 8 #ifdef CONFIG_COMPAT 9 10 #include <linux/stat.h> 11 #include <linux/param.h> /* for HZ */ 12 #include <linux/sem.h> 13 14 #include <asm/compat.h> 15 #include <asm/siginfo.h> 16 #include <asm/signal.h> 17 18 #define compat_jiffies_to_clock_t(x) \ 19 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ) 20 21 typedef __compat_uid32_t compat_uid_t; 22 typedef __compat_gid32_t compat_gid_t; 23 24 struct rusage; 25 26 struct compat_itimerspec { 27 struct compat_timespec it_interval; 28 struct compat_timespec it_value; 29 }; 30 31 struct compat_utimbuf { 32 compat_time_t actime; 33 compat_time_t modtime; 34 }; 35 36 struct compat_itimerval { 37 struct compat_timeval it_interval; 38 struct compat_timeval it_value; 39 }; 40 41 struct compat_tms { 42 compat_clock_t tms_utime; 43 compat_clock_t tms_stime; 44 compat_clock_t tms_cutime; 45 compat_clock_t tms_cstime; 46 }; 47 48 struct compat_timex { 49 compat_uint_t modes; 50 compat_long_t offset; 51 compat_long_t freq; 52 compat_long_t maxerror; 53 compat_long_t esterror; 54 compat_int_t status; 55 compat_long_t constant; 56 compat_long_t precision; 57 compat_long_t tolerance; 58 struct compat_timeval time; 59 compat_long_t tick; 60 compat_long_t ppsfreq; 61 compat_long_t jitter; 62 compat_int_t shift; 63 compat_long_t stabil; 64 compat_long_t jitcnt; 65 compat_long_t calcnt; 66 compat_long_t errcnt; 67 compat_long_t stbcnt; 68 compat_int_t tai; 69 70 compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32; 71 compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32; 72 compat_int_t :32; compat_int_t :32; compat_int_t :32; 73 }; 74 75 #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW) 76 77 typedef struct { 78 compat_sigset_word sig[_COMPAT_NSIG_WORDS]; 79 } compat_sigset_t; 80 81 extern int get_compat_timespec(struct timespec *, const struct compat_timespec __user *); 82 extern int put_compat_timespec(const struct timespec *, struct compat_timespec __user *); 83 84 struct compat_iovec { 85 compat_uptr_t iov_base; 86 compat_size_t iov_len; 87 }; 88 89 struct compat_rlimit { 90 compat_ulong_t rlim_cur; 91 compat_ulong_t rlim_max; 92 }; 93 94 struct compat_rusage { 95 struct compat_timeval ru_utime; 96 struct compat_timeval ru_stime; 97 compat_long_t ru_maxrss; 98 compat_long_t ru_ixrss; 99 compat_long_t ru_idrss; 100 compat_long_t ru_isrss; 101 compat_long_t ru_minflt; 102 compat_long_t ru_majflt; 103 compat_long_t ru_nswap; 104 compat_long_t ru_inblock; 105 compat_long_t ru_oublock; 106 compat_long_t ru_msgsnd; 107 compat_long_t ru_msgrcv; 108 compat_long_t ru_nsignals; 109 compat_long_t ru_nvcsw; 110 compat_long_t ru_nivcsw; 111 }; 112 113 extern int put_compat_rusage(const struct rusage *, struct compat_rusage __user *); 114 115 struct compat_siginfo; 116 117 extern asmlinkage long compat_sys_waitid(int, compat_pid_t, 118 struct compat_siginfo __user *, int, 119 struct compat_rusage __user *); 120 121 struct compat_dirent { 122 u32 d_ino; 123 compat_off_t d_off; 124 u16 d_reclen; 125 char d_name[256]; 126 }; 127 128 struct compat_ustat { 129 compat_daddr_t f_tfree; 130 compat_ino_t f_tinode; 131 char f_fname[6]; 132 char f_fpack[6]; 133 }; 134 135 typedef union compat_sigval { 136 compat_int_t sival_int; 137 compat_uptr_t sival_ptr; 138 } compat_sigval_t; 139 140 #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3) 141 142 typedef struct compat_sigevent { 143 compat_sigval_t sigev_value; 144 compat_int_t sigev_signo; 145 compat_int_t sigev_notify; 146 union { 147 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE]; 148 compat_int_t _tid; 149 150 struct { 151 compat_uptr_t _function; 152 compat_uptr_t _attribute; 153 } _sigev_thread; 154 } _sigev_un; 155 } compat_sigevent_t; 156 157 struct compat_robust_list { 158 compat_uptr_t next; 159 }; 160 161 struct compat_robust_list_head { 162 struct compat_robust_list list; 163 compat_long_t futex_offset; 164 compat_uptr_t list_op_pending; 165 }; 166 167 extern void compat_exit_robust_list(struct task_struct *curr); 168 169 asmlinkage long 170 compat_sys_set_robust_list(struct compat_robust_list_head __user *head, 171 compat_size_t len); 172 asmlinkage long 173 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, 174 compat_size_t __user *len_ptr); 175 176 long compat_sys_semctl(int first, int second, int third, void __user *uptr); 177 long compat_sys_msgsnd(int first, int second, int third, void __user *uptr); 178 long compat_sys_msgrcv(int first, int second, int msgtyp, int third, 179 int version, void __user *uptr); 180 long compat_sys_msgctl(int first, int second, void __user *uptr); 181 long compat_sys_shmat(int first, int second, compat_uptr_t third, int version, 182 void __user *uptr); 183 long compat_sys_shmctl(int first, int second, void __user *uptr); 184 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, 185 unsigned nsems, const struct compat_timespec __user *timeout); 186 asmlinkage long compat_sys_keyctl(u32 option, 187 u32 arg2, u32 arg3, u32 arg4, u32 arg5); 188 asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); 189 190 asmlinkage ssize_t compat_sys_readv(unsigned long fd, 191 const struct compat_iovec __user *vec, unsigned long vlen); 192 asmlinkage ssize_t compat_sys_writev(unsigned long fd, 193 const struct compat_iovec __user *vec, unsigned long vlen); 194 asmlinkage ssize_t compat_sys_preadv(unsigned long fd, 195 const struct compat_iovec __user *vec, 196 unsigned long vlen, u32 pos_low, u32 pos_high); 197 asmlinkage ssize_t compat_sys_pwritev(unsigned long fd, 198 const struct compat_iovec __user *vec, 199 unsigned long vlen, u32 pos_low, u32 pos_high); 200 201 int compat_do_execve(char * filename, compat_uptr_t __user *argv, 202 compat_uptr_t __user *envp, struct pt_regs * regs); 203 204 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, 205 compat_ulong_t __user *outp, compat_ulong_t __user *exp, 206 struct compat_timeval __user *tvp); 207 208 asmlinkage long compat_sys_wait4(compat_pid_t pid, 209 compat_uint_t __user *stat_addr, int options, 210 struct compat_rusage __user *ru); 211 212 #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t)) 213 214 #define BITS_TO_COMPAT_LONGS(bits) \ 215 (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG) 216 217 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, 218 unsigned long bitmap_size); 219 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, 220 unsigned long bitmap_size); 221 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from); 222 int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from); 223 int get_compat_sigevent(struct sigevent *event, 224 const struct compat_sigevent __user *u_event); 225 226 static inline int compat_timeval_compare(struct compat_timeval *lhs, 227 struct compat_timeval *rhs) 228 { 229 if (lhs->tv_sec < rhs->tv_sec) 230 return -1; 231 if (lhs->tv_sec > rhs->tv_sec) 232 return 1; 233 return lhs->tv_usec - rhs->tv_usec; 234 } 235 236 static inline int compat_timespec_compare(struct compat_timespec *lhs, 237 struct compat_timespec *rhs) 238 { 239 if (lhs->tv_sec < rhs->tv_sec) 240 return -1; 241 if (lhs->tv_sec > rhs->tv_sec) 242 return 1; 243 return lhs->tv_nsec - rhs->tv_nsec; 244 } 245 246 extern int get_compat_itimerspec(struct itimerspec *dst, 247 const struct compat_itimerspec __user *src); 248 extern int put_compat_itimerspec(struct compat_itimerspec __user *dst, 249 const struct itimerspec *src); 250 251 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, 252 struct timezone __user *tz); 253 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, 254 struct timezone __user *tz); 255 256 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp); 257 258 extern int compat_printk(const char *fmt, ...); 259 extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat); 260 261 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, 262 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, 263 const compat_ulong_t __user *new_nodes); 264 265 extern int compat_ptrace_request(struct task_struct *child, 266 compat_long_t request, 267 compat_ulong_t addr, compat_ulong_t data); 268 269 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, 270 compat_ulong_t addr, compat_ulong_t data); 271 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, 272 compat_long_t addr, compat_long_t data); 273 274 /* 275 * epoll (fs/eventpoll.c) compat bits follow ... 276 */ 277 struct epoll_event; 278 #define compat_epoll_event epoll_event 279 asmlinkage long compat_sys_epoll_pwait(int epfd, 280 struct compat_epoll_event __user *events, 281 int maxevents, int timeout, 282 const compat_sigset_t __user *sigmask, 283 compat_size_t sigsetsize); 284 285 asmlinkage long compat_sys_utimensat(unsigned int dfd, char __user *filename, 286 struct compat_timespec __user *t, int flags); 287 288 asmlinkage long compat_sys_signalfd(int ufd, 289 const compat_sigset_t __user *sigmask, 290 compat_size_t sigsetsize); 291 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags, 292 const struct compat_itimerspec __user *utmr, 293 struct compat_itimerspec __user *otmr); 294 asmlinkage long compat_sys_timerfd_gettime(int ufd, 295 struct compat_itimerspec __user *otmr); 296 297 asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page, 298 __u32 __user *pages, 299 const int __user *nodes, 300 int __user *status, 301 int flags); 302 asmlinkage long compat_sys_futimesat(unsigned int dfd, char __user *filename, 303 struct compat_timeval __user *t); 304 asmlinkage long compat_sys_newfstatat(unsigned int dfd, char __user * filename, 305 struct compat_stat __user *statbuf, 306 int flag); 307 asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename, 308 int flags, int mode); 309 310 #endif /* CONFIG_COMPAT */ 311 #endif /* _LINUX_COMPAT_H */ 312