1 #ifndef _ASM_COMPAT_H 2 #define _ASM_COMPAT_H 3 /* 4 * Architecture specific compatibility types 5 */ 6 #include <linux/thread_info.h> 7 #include <linux/types.h> 8 #include <asm/page.h> 9 #include <asm/ptrace.h> 10 11 #define COMPAT_USER_HZ 100 12 #define COMPAT_UTS_MACHINE "mips\0\0\0" 13 14 typedef u32 compat_size_t; 15 typedef s32 compat_ssize_t; 16 typedef s32 compat_time_t; 17 typedef s32 compat_clock_t; 18 typedef s32 compat_suseconds_t; 19 20 typedef s32 compat_pid_t; 21 typedef s32 __compat_uid_t; 22 typedef s32 __compat_gid_t; 23 typedef __compat_uid_t __compat_uid32_t; 24 typedef __compat_gid_t __compat_gid32_t; 25 typedef u32 compat_mode_t; 26 typedef u32 compat_ino_t; 27 typedef u32 compat_dev_t; 28 typedef s32 compat_off_t; 29 typedef s64 compat_loff_t; 30 typedef u32 compat_nlink_t; 31 typedef s32 compat_ipc_pid_t; 32 typedef s32 compat_daddr_t; 33 typedef s32 compat_caddr_t; 34 typedef struct { 35 s32 val[2]; 36 } compat_fsid_t; 37 typedef s32 compat_timer_t; 38 typedef s32 compat_key_t; 39 40 typedef s32 compat_int_t; 41 typedef s32 compat_long_t; 42 typedef s64 compat_s64; 43 typedef u32 compat_uint_t; 44 typedef u32 compat_ulong_t; 45 typedef u64 compat_u64; 46 47 struct compat_timespec { 48 compat_time_t tv_sec; 49 s32 tv_nsec; 50 }; 51 52 struct compat_timeval { 53 compat_time_t tv_sec; 54 s32 tv_usec; 55 }; 56 57 struct compat_stat { 58 compat_dev_t st_dev; 59 s32 st_pad1[3]; 60 compat_ino_t st_ino; 61 compat_mode_t st_mode; 62 compat_nlink_t st_nlink; 63 __compat_uid_t st_uid; 64 __compat_gid_t st_gid; 65 compat_dev_t st_rdev; 66 s32 st_pad2[2]; 67 compat_off_t st_size; 68 s32 st_pad3; 69 compat_time_t st_atime; 70 s32 st_atime_nsec; 71 compat_time_t st_mtime; 72 s32 st_mtime_nsec; 73 compat_time_t st_ctime; 74 s32 st_ctime_nsec; 75 s32 st_blksize; 76 s32 st_blocks; 77 s32 st_pad4[14]; 78 }; 79 80 struct compat_flock { 81 short l_type; 82 short l_whence; 83 compat_off_t l_start; 84 compat_off_t l_len; 85 s32 l_sysid; 86 compat_pid_t l_pid; 87 short __unused; 88 s32 pad[4]; 89 }; 90 91 #define F_GETLK64 33 92 #define F_SETLK64 34 93 #define F_SETLKW64 35 94 95 struct compat_flock64 { 96 short l_type; 97 short l_whence; 98 compat_loff_t l_start; 99 compat_loff_t l_len; 100 compat_pid_t l_pid; 101 }; 102 103 struct compat_statfs { 104 int f_type; 105 int f_bsize; 106 int f_frsize; 107 int f_blocks; 108 int f_bfree; 109 int f_files; 110 int f_ffree; 111 int f_bavail; 112 compat_fsid_t f_fsid; 113 int f_namelen; 114 int f_spare[6]; 115 }; 116 117 #define COMPAT_RLIM_INFINITY 0x7fffffffUL 118 119 typedef u32 compat_old_sigset_t; /* at least 32 bits */ 120 121 #define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */ 122 #define _COMPAT_NSIG_BPW 32 123 124 typedef u32 compat_sigset_word; 125 126 #define COMPAT_OFF_T_MAX 0x7fffffff 127 #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL 128 129 /* 130 * A pointer passed in from user mode. This should not 131 * be used for syscall parameters, just declare them 132 * as pointers because the syscall entry code will have 133 * appropriately converted them already. 134 */ 135 typedef u32 compat_uptr_t; 136 137 static inline void __user *compat_ptr(compat_uptr_t uptr) 138 { 139 /* cast to a __user pointer via "unsigned long" makes sparse happy */ 140 return (void __user *)(unsigned long)(long)uptr; 141 } 142 143 static inline compat_uptr_t ptr_to_compat(void __user *uptr) 144 { 145 return (u32)(unsigned long)uptr; 146 } 147 148 static inline void __user *arch_compat_alloc_user_space(long len) 149 { 150 struct pt_regs *regs = (struct pt_regs *) 151 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1; 152 153 return (void __user *) (regs->regs[29] - len); 154 } 155 156 struct compat_ipc64_perm { 157 compat_key_t key; 158 __compat_uid32_t uid; 159 __compat_gid32_t gid; 160 __compat_uid32_t cuid; 161 __compat_gid32_t cgid; 162 compat_mode_t mode; 163 unsigned short seq; 164 unsigned short __pad2; 165 compat_ulong_t __unused1; 166 compat_ulong_t __unused2; 167 }; 168 169 struct compat_semid64_ds { 170 struct compat_ipc64_perm sem_perm; 171 compat_time_t sem_otime; 172 compat_time_t sem_ctime; 173 compat_ulong_t sem_nsems; 174 compat_ulong_t __unused1; 175 compat_ulong_t __unused2; 176 }; 177 178 struct compat_msqid64_ds { 179 struct compat_ipc64_perm msg_perm; 180 #ifndef CONFIG_CPU_LITTLE_ENDIAN 181 compat_ulong_t __unused1; 182 #endif 183 compat_time_t msg_stime; 184 #ifdef CONFIG_CPU_LITTLE_ENDIAN 185 compat_ulong_t __unused1; 186 #endif 187 #ifndef CONFIG_CPU_LITTLE_ENDIAN 188 compat_ulong_t __unused2; 189 #endif 190 compat_time_t msg_rtime; 191 #ifdef CONFIG_CPU_LITTLE_ENDIAN 192 compat_ulong_t __unused2; 193 #endif 194 #ifndef CONFIG_CPU_LITTLE_ENDIAN 195 compat_ulong_t __unused3; 196 #endif 197 compat_time_t msg_ctime; 198 #ifdef CONFIG_CPU_LITTLE_ENDIAN 199 compat_ulong_t __unused3; 200 #endif 201 compat_ulong_t msg_cbytes; 202 compat_ulong_t msg_qnum; 203 compat_ulong_t msg_qbytes; 204 compat_pid_t msg_lspid; 205 compat_pid_t msg_lrpid; 206 compat_ulong_t __unused4; 207 compat_ulong_t __unused5; 208 }; 209 210 struct compat_shmid64_ds { 211 struct compat_ipc64_perm shm_perm; 212 compat_size_t shm_segsz; 213 compat_time_t shm_atime; 214 compat_time_t shm_dtime; 215 compat_time_t shm_ctime; 216 compat_pid_t shm_cpid; 217 compat_pid_t shm_lpid; 218 compat_ulong_t shm_nattch; 219 compat_ulong_t __unused1; 220 compat_ulong_t __unused2; 221 }; 222 223 static inline int is_compat_task(void) 224 { 225 return test_thread_flag(TIF_32BIT); 226 } 227 228 #endif /* _ASM_COMPAT_H */ 229