1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_COMPAT_H 3 #define _ASM_COMPAT_H 4 /* 5 * Architecture specific compatibility types 6 */ 7 #include <linux/thread_info.h> 8 #include <linux/types.h> 9 #include <asm/page.h> 10 #include <asm/ptrace.h> 11 12 #include <asm-generic/compat.h> 13 14 #define COMPAT_USER_HZ 100 15 #define COMPAT_UTS_MACHINE "mips\0\0\0" 16 17 typedef s32 __compat_uid_t; 18 typedef s32 __compat_gid_t; 19 typedef __compat_uid_t __compat_uid32_t; 20 typedef __compat_gid_t __compat_gid32_t; 21 typedef u32 compat_mode_t; 22 typedef u32 compat_dev_t; 23 typedef u32 compat_nlink_t; 24 typedef s32 compat_ipc_pid_t; 25 typedef s32 compat_caddr_t; 26 typedef struct { 27 s32 val[2]; 28 } compat_fsid_t; 29 typedef s64 compat_s64; 30 typedef u64 compat_u64; 31 32 struct compat_stat { 33 compat_dev_t st_dev; 34 s32 st_pad1[3]; 35 compat_ino_t st_ino; 36 compat_mode_t st_mode; 37 compat_nlink_t st_nlink; 38 __compat_uid_t st_uid; 39 __compat_gid_t st_gid; 40 compat_dev_t st_rdev; 41 s32 st_pad2[2]; 42 compat_off_t st_size; 43 s32 st_pad3; 44 old_time32_t st_atime; 45 s32 st_atime_nsec; 46 old_time32_t st_mtime; 47 s32 st_mtime_nsec; 48 old_time32_t st_ctime; 49 s32 st_ctime_nsec; 50 s32 st_blksize; 51 s32 st_blocks; 52 s32 st_pad4[14]; 53 }; 54 55 struct compat_flock { 56 short l_type; 57 short l_whence; 58 compat_off_t l_start; 59 compat_off_t l_len; 60 s32 l_sysid; 61 compat_pid_t l_pid; 62 s32 pad[4]; 63 }; 64 65 #define F_GETLK64 33 66 #define F_SETLK64 34 67 #define F_SETLKW64 35 68 69 struct compat_flock64 { 70 short l_type; 71 short l_whence; 72 compat_loff_t l_start; 73 compat_loff_t l_len; 74 compat_pid_t l_pid; 75 }; 76 77 struct compat_statfs { 78 int f_type; 79 int f_bsize; 80 int f_frsize; 81 int f_blocks; 82 int f_bfree; 83 int f_files; 84 int f_ffree; 85 int f_bavail; 86 compat_fsid_t f_fsid; 87 int f_namelen; 88 int f_flags; 89 int f_spare[5]; 90 }; 91 92 #define COMPAT_RLIM_INFINITY 0x7fffffffUL 93 94 typedef u32 compat_old_sigset_t; /* at least 32 bits */ 95 96 #define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */ 97 #define _COMPAT_NSIG_BPW 32 98 99 typedef u32 compat_sigset_word; 100 101 #define COMPAT_OFF_T_MAX 0x7fffffff 102 103 static inline void __user *arch_compat_alloc_user_space(long len) 104 { 105 struct pt_regs *regs = (struct pt_regs *) 106 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1; 107 108 return (void __user *) (regs->regs[29] - len); 109 } 110 111 struct compat_ipc64_perm { 112 compat_key_t key; 113 __compat_uid32_t uid; 114 __compat_gid32_t gid; 115 __compat_uid32_t cuid; 116 __compat_gid32_t cgid; 117 compat_mode_t mode; 118 unsigned short seq; 119 unsigned short __pad2; 120 compat_ulong_t __unused1; 121 compat_ulong_t __unused2; 122 }; 123 124 struct compat_semid64_ds { 125 struct compat_ipc64_perm sem_perm; 126 compat_ulong_t sem_otime; 127 compat_ulong_t sem_ctime; 128 compat_ulong_t sem_nsems; 129 compat_ulong_t sem_otime_high; 130 compat_ulong_t sem_ctime_high; 131 }; 132 133 struct compat_msqid64_ds { 134 struct compat_ipc64_perm msg_perm; 135 #ifndef CONFIG_CPU_LITTLE_ENDIAN 136 compat_ulong_t msg_stime_high; 137 #endif 138 compat_ulong_t msg_stime; 139 #ifdef CONFIG_CPU_LITTLE_ENDIAN 140 compat_ulong_t msg_stime_high; 141 #endif 142 #ifndef CONFIG_CPU_LITTLE_ENDIAN 143 compat_ulong_t msg_rtime_high; 144 #endif 145 compat_ulong_t msg_rtime; 146 #ifdef CONFIG_CPU_LITTLE_ENDIAN 147 compat_ulong_t msg_rtime_high; 148 #endif 149 #ifndef CONFIG_CPU_LITTLE_ENDIAN 150 compat_ulong_t msg_ctime_high; 151 #endif 152 compat_ulong_t msg_ctime; 153 #ifdef CONFIG_CPU_LITTLE_ENDIAN 154 compat_ulong_t msg_ctime_high; 155 #endif 156 compat_ulong_t msg_cbytes; 157 compat_ulong_t msg_qnum; 158 compat_ulong_t msg_qbytes; 159 compat_pid_t msg_lspid; 160 compat_pid_t msg_lrpid; 161 compat_ulong_t __unused4; 162 compat_ulong_t __unused5; 163 }; 164 165 struct compat_shmid64_ds { 166 struct compat_ipc64_perm shm_perm; 167 compat_size_t shm_segsz; 168 compat_ulong_t shm_atime; 169 compat_ulong_t shm_dtime; 170 compat_ulong_t shm_ctime; 171 compat_pid_t shm_cpid; 172 compat_pid_t shm_lpid; 173 compat_ulong_t shm_nattch; 174 compat_ushort_t shm_atime_high; 175 compat_ushort_t shm_dtime_high; 176 compat_ushort_t shm_ctime_high; 177 compat_ushort_t __unused2; 178 }; 179 180 /* MIPS has unusual order of fields in stack_t */ 181 typedef struct compat_sigaltstack { 182 compat_uptr_t ss_sp; 183 compat_size_t ss_size; 184 int ss_flags; 185 } compat_stack_t; 186 #define compat_sigaltstack compat_sigaltstack 187 188 static inline int is_compat_task(void) 189 { 190 return test_thread_flag(TIF_32BIT_ADDR); 191 } 192 193 #endif /* _ASM_COMPAT_H */ 194