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 cp_compat_stat(struct kstat *, struct compat_stat __user *); 82 extern int get_compat_timespec(struct timespec *, const struct compat_timespec __user *); 83 extern int put_compat_timespec(const struct timespec *, struct compat_timespec __user *); 84 85 struct compat_iovec { 86 compat_uptr_t iov_base; 87 compat_size_t iov_len; 88 }; 89 90 struct compat_rlimit { 91 compat_ulong_t rlim_cur; 92 compat_ulong_t rlim_max; 93 }; 94 95 struct compat_rusage { 96 struct compat_timeval ru_utime; 97 struct compat_timeval ru_stime; 98 compat_long_t ru_maxrss; 99 compat_long_t ru_ixrss; 100 compat_long_t ru_idrss; 101 compat_long_t ru_isrss; 102 compat_long_t ru_minflt; 103 compat_long_t ru_majflt; 104 compat_long_t ru_nswap; 105 compat_long_t ru_inblock; 106 compat_long_t ru_oublock; 107 compat_long_t ru_msgsnd; 108 compat_long_t ru_msgrcv; 109 compat_long_t ru_nsignals; 110 compat_long_t ru_nvcsw; 111 compat_long_t ru_nivcsw; 112 }; 113 114 extern int put_compat_rusage(const struct rusage *, struct compat_rusage __user *); 115 116 struct compat_siginfo; 117 118 extern asmlinkage long compat_sys_waitid(int, compat_pid_t, 119 struct compat_siginfo __user *, int, 120 struct compat_rusage __user *); 121 122 struct compat_dirent { 123 u32 d_ino; 124 compat_off_t d_off; 125 u16 d_reclen; 126 char d_name[256]; 127 }; 128 129 typedef union compat_sigval { 130 compat_int_t sival_int; 131 compat_uptr_t sival_ptr; 132 } compat_sigval_t; 133 134 #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3) 135 136 typedef struct compat_sigevent { 137 compat_sigval_t sigev_value; 138 compat_int_t sigev_signo; 139 compat_int_t sigev_notify; 140 union { 141 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE]; 142 compat_int_t _tid; 143 144 struct { 145 compat_uptr_t _function; 146 compat_uptr_t _attribute; 147 } _sigev_thread; 148 } _sigev_un; 149 } compat_sigevent_t; 150 151 struct compat_robust_list { 152 compat_uptr_t next; 153 }; 154 155 struct compat_robust_list_head { 156 struct compat_robust_list list; 157 compat_long_t futex_offset; 158 compat_uptr_t list_op_pending; 159 }; 160 161 extern void compat_exit_robust_list(struct task_struct *curr); 162 163 asmlinkage long 164 compat_sys_set_robust_list(struct compat_robust_list_head __user *head, 165 compat_size_t len); 166 asmlinkage long 167 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, 168 compat_size_t __user *len_ptr); 169 170 long compat_sys_semctl(int first, int second, int third, void __user *uptr); 171 long compat_sys_msgsnd(int first, int second, int third, void __user *uptr); 172 long compat_sys_msgrcv(int first, int second, int msgtyp, int third, 173 int version, void __user *uptr); 174 long compat_sys_msgctl(int first, int second, void __user *uptr); 175 long compat_sys_shmat(int first, int second, compat_uptr_t third, int version, 176 void __user *uptr); 177 long compat_sys_shmctl(int first, int second, void __user *uptr); 178 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, 179 unsigned nsems, const struct compat_timespec __user *timeout); 180 asmlinkage long compat_sys_keyctl(u32 option, 181 u32 arg2, u32 arg3, u32 arg4, u32 arg5); 182 183 asmlinkage ssize_t compat_sys_readv(unsigned long fd, 184 const struct compat_iovec __user *vec, unsigned long vlen); 185 asmlinkage ssize_t compat_sys_writev(unsigned long fd, 186 const struct compat_iovec __user *vec, unsigned long vlen); 187 188 int compat_do_execve(char * filename, compat_uptr_t __user *argv, 189 compat_uptr_t __user *envp, struct pt_regs * regs); 190 191 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, 192 compat_ulong_t __user *outp, compat_ulong_t __user *exp, 193 struct compat_timeval __user *tvp); 194 195 asmlinkage long compat_sys_wait4(compat_pid_t pid, 196 compat_uint_t __user *stat_addr, int options, 197 struct compat_rusage __user *ru); 198 199 #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t)) 200 201 #define BITS_TO_COMPAT_LONGS(bits) \ 202 (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG) 203 204 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, 205 unsigned long bitmap_size); 206 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, 207 unsigned long bitmap_size); 208 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from); 209 int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from); 210 int get_compat_sigevent(struct sigevent *event, 211 const struct compat_sigevent __user *u_event); 212 213 static inline int compat_timeval_compare(struct compat_timeval *lhs, 214 struct compat_timeval *rhs) 215 { 216 if (lhs->tv_sec < rhs->tv_sec) 217 return -1; 218 if (lhs->tv_sec > rhs->tv_sec) 219 return 1; 220 return lhs->tv_usec - rhs->tv_usec; 221 } 222 223 static inline int compat_timespec_compare(struct compat_timespec *lhs, 224 struct compat_timespec *rhs) 225 { 226 if (lhs->tv_sec < rhs->tv_sec) 227 return -1; 228 if (lhs->tv_sec > rhs->tv_sec) 229 return 1; 230 return lhs->tv_nsec - rhs->tv_nsec; 231 } 232 233 extern int get_compat_itimerspec(struct itimerspec *dst, 234 const struct compat_itimerspec __user *src); 235 extern int put_compat_itimerspec(struct compat_itimerspec __user *dst, 236 const struct itimerspec *src); 237 238 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp); 239 240 extern int compat_printk(const char *fmt, ...); 241 extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat); 242 243 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, 244 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, 245 const compat_ulong_t __user *new_nodes); 246 247 extern int compat_ptrace_request(struct task_struct *child, 248 compat_long_t request, 249 compat_ulong_t addr, compat_ulong_t data); 250 251 #ifdef __ARCH_WANT_COMPAT_SYS_PTRACE 252 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, 253 compat_ulong_t addr, compat_ulong_t data); 254 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, 255 compat_long_t addr, compat_long_t data); 256 #endif /* __ARCH_WANT_COMPAT_SYS_PTRACE */ 257 258 /* 259 * epoll (fs/eventpoll.c) compat bits follow ... 260 */ 261 struct epoll_event; 262 #define compat_epoll_event epoll_event 263 asmlinkage long compat_sys_epoll_pwait(int epfd, 264 struct compat_epoll_event __user *events, 265 int maxevents, int timeout, 266 const compat_sigset_t __user *sigmask, 267 compat_size_t sigsetsize); 268 269 asmlinkage long compat_sys_utimensat(unsigned int dfd, char __user *filename, 270 struct compat_timespec __user *t, int flags); 271 272 asmlinkage long compat_sys_signalfd(int ufd, 273 const compat_sigset_t __user *sigmask, 274 compat_size_t sigsetsize); 275 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags, 276 const struct compat_itimerspec __user *utmr, 277 struct compat_itimerspec __user *otmr); 278 asmlinkage long compat_sys_timerfd_gettime(int ufd, 279 struct compat_itimerspec __user *otmr); 280 281 #endif /* CONFIG_COMPAT */ 282 #endif /* _LINUX_COMPAT_H */ 283