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 69 compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32; 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 }; 73 74 #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW) 75 76 typedef struct { 77 compat_sigset_word sig[_COMPAT_NSIG_WORDS]; 78 } compat_sigset_t; 79 80 extern int cp_compat_stat(struct kstat *, struct compat_stat __user *); 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 typedef union compat_sigval { 129 compat_int_t sival_int; 130 compat_uptr_t sival_ptr; 131 } compat_sigval_t; 132 133 #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3) 134 135 typedef struct compat_sigevent { 136 compat_sigval_t sigev_value; 137 compat_int_t sigev_signo; 138 compat_int_t sigev_notify; 139 union { 140 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE]; 141 compat_int_t _tid; 142 143 struct { 144 compat_uptr_t _function; 145 compat_uptr_t _attribute; 146 } _sigev_thread; 147 } _sigev_un; 148 } compat_sigevent_t; 149 150 struct compat_robust_list { 151 compat_uptr_t next; 152 }; 153 154 struct compat_robust_list_head { 155 struct compat_robust_list list; 156 compat_long_t futex_offset; 157 compat_uptr_t list_op_pending; 158 }; 159 160 extern void compat_exit_robust_list(struct task_struct *curr); 161 162 asmlinkage long 163 compat_sys_set_robust_list(struct compat_robust_list_head __user *head, 164 compat_size_t len); 165 asmlinkage long 166 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, 167 compat_size_t __user *len_ptr); 168 169 long compat_sys_semctl(int first, int second, int third, void __user *uptr); 170 long compat_sys_msgsnd(int first, int second, int third, void __user *uptr); 171 long compat_sys_msgrcv(int first, int second, int msgtyp, int third, 172 int version, void __user *uptr); 173 long compat_sys_msgctl(int first, int second, void __user *uptr); 174 long compat_sys_shmat(int first, int second, compat_uptr_t third, int version, 175 void __user *uptr); 176 long compat_sys_shmctl(int first, int second, void __user *uptr); 177 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, 178 unsigned nsems, const struct compat_timespec __user *timeout); 179 asmlinkage long compat_sys_keyctl(u32 option, 180 u32 arg2, u32 arg3, u32 arg4, u32 arg5); 181 182 asmlinkage ssize_t compat_sys_readv(unsigned long fd, 183 const struct compat_iovec __user *vec, unsigned long vlen); 184 asmlinkage ssize_t compat_sys_writev(unsigned long fd, 185 const struct compat_iovec __user *vec, unsigned long vlen); 186 187 int compat_do_execve(char * filename, compat_uptr_t __user *argv, 188 compat_uptr_t __user *envp, struct pt_regs * regs); 189 190 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, 191 compat_ulong_t __user *outp, compat_ulong_t __user *exp, 192 struct compat_timeval __user *tvp); 193 194 #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t)) 195 196 #define BITS_TO_COMPAT_LONGS(bits) \ 197 (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG) 198 199 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, 200 unsigned long bitmap_size); 201 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, 202 unsigned long bitmap_size); 203 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from); 204 int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from); 205 int get_compat_sigevent(struct sigevent *event, 206 const struct compat_sigevent __user *u_event); 207 208 static inline int compat_timeval_compare(struct compat_timeval *lhs, 209 struct compat_timeval *rhs) 210 { 211 if (lhs->tv_sec < rhs->tv_sec) 212 return -1; 213 if (lhs->tv_sec > rhs->tv_sec) 214 return 1; 215 return lhs->tv_usec - rhs->tv_usec; 216 } 217 218 static inline int compat_timespec_compare(struct compat_timespec *lhs, 219 struct compat_timespec *rhs) 220 { 221 if (lhs->tv_sec < rhs->tv_sec) 222 return -1; 223 if (lhs->tv_sec > rhs->tv_sec) 224 return 1; 225 return lhs->tv_nsec - rhs->tv_nsec; 226 } 227 228 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp); 229 230 extern int compat_printk(const char *fmt, ...); 231 extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat); 232 233 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, 234 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, 235 const compat_ulong_t __user *new_nodes); 236 237 /* 238 * epoll (fs/eventpoll.c) compat bits follow ... 239 */ 240 #ifndef CONFIG_HAS_COMPAT_EPOLL_EVENT 241 struct epoll_event; 242 #define compat_epoll_event epoll_event 243 #else 244 asmlinkage long compat_sys_epoll_ctl(int epfd, int op, int fd, 245 struct compat_epoll_event __user *event); 246 asmlinkage long compat_sys_epoll_wait(int epfd, 247 struct compat_epoll_event __user *events, 248 int maxevents, int timeout); 249 #endif 250 asmlinkage long compat_sys_epoll_pwait(int epfd, 251 struct compat_epoll_event __user *events, 252 int maxevents, int timeout, 253 const compat_sigset_t __user *sigmask, 254 compat_size_t sigsetsize); 255 256 #endif /* CONFIG_COMPAT */ 257 #endif /* _LINUX_COMPAT_H */ 258