1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_POWERPC_COMPAT_H 3 #define _ASM_POWERPC_COMPAT_H 4 #ifdef __KERNEL__ 5 /* 6 * Architecture specific compatibility types 7 */ 8 #include <linux/types.h> 9 #include <linux/sched.h> 10 11 #include <asm-generic/compat.h> 12 13 #define COMPAT_USER_HZ 100 14 #ifdef __BIG_ENDIAN__ 15 #define COMPAT_UTS_MACHINE "ppc\0\0" 16 #else 17 #define COMPAT_UTS_MACHINE "ppcle\0\0" 18 #endif 19 20 typedef u32 __compat_uid_t; 21 typedef u32 __compat_gid_t; 22 typedef u32 __compat_uid32_t; 23 typedef u32 __compat_gid32_t; 24 typedef u32 compat_mode_t; 25 typedef u32 compat_dev_t; 26 typedef s16 compat_nlink_t; 27 typedef u16 compat_ipc_pid_t; 28 typedef u32 compat_caddr_t; 29 typedef __kernel_fsid_t compat_fsid_t; 30 31 struct compat_stat { 32 compat_dev_t st_dev; 33 compat_ino_t st_ino; 34 compat_mode_t st_mode; 35 compat_nlink_t st_nlink; 36 __compat_uid32_t st_uid; 37 __compat_gid32_t st_gid; 38 compat_dev_t st_rdev; 39 compat_off_t st_size; 40 compat_off_t st_blksize; 41 compat_off_t st_blocks; 42 old_time32_t st_atime; 43 u32 st_atime_nsec; 44 old_time32_t st_mtime; 45 u32 st_mtime_nsec; 46 old_time32_t st_ctime; 47 u32 st_ctime_nsec; 48 u32 __unused4[2]; 49 }; 50 51 struct compat_flock { 52 short l_type; 53 short l_whence; 54 compat_off_t l_start; 55 compat_off_t l_len; 56 compat_pid_t l_pid; 57 }; 58 59 #define F_GETLK64 12 /* using 'struct flock64' */ 60 #define F_SETLK64 13 61 #define F_SETLKW64 14 62 63 struct compat_flock64 { 64 short l_type; 65 short l_whence; 66 compat_loff_t l_start; 67 compat_loff_t l_len; 68 compat_pid_t l_pid; 69 }; 70 71 struct compat_statfs { 72 int f_type; 73 int f_bsize; 74 int f_blocks; 75 int f_bfree; 76 int f_bavail; 77 int f_files; 78 int f_ffree; 79 compat_fsid_t f_fsid; 80 int f_namelen; /* SunOS ignores this field. */ 81 int f_frsize; 82 int f_flags; 83 int f_spare[4]; 84 }; 85 86 #define COMPAT_RLIM_INFINITY 0xffffffff 87 88 typedef u32 compat_old_sigset_t; 89 90 #define _COMPAT_NSIG 64 91 #define _COMPAT_NSIG_BPW 32 92 93 typedef u32 compat_sigset_word; 94 95 #define COMPAT_OFF_T_MAX 0x7fffffff 96 97 static inline void __user *arch_compat_alloc_user_space(long len) 98 { 99 struct pt_regs *regs = current->thread.regs; 100 unsigned long usp = regs->gpr[1]; 101 102 /* 103 * We can't access below the stack pointer in the 32bit ABI and 104 * can access 288 bytes in the 64bit big-endian ABI, 105 * or 512 bytes with the new ELFv2 little-endian ABI. 106 */ 107 if (!is_32bit_task()) 108 usp -= USER_REDZONE_SIZE; 109 110 return (void __user *) (usp - len); 111 } 112 113 /* 114 * ipc64_perm is actually 32/64bit clean but since the compat layer refers to 115 * it we may as well define it. 116 */ 117 struct compat_ipc64_perm { 118 compat_key_t key; 119 __compat_uid_t uid; 120 __compat_gid_t gid; 121 __compat_uid_t cuid; 122 __compat_gid_t cgid; 123 compat_mode_t mode; 124 unsigned int seq; 125 unsigned int __pad2; 126 unsigned long __unused1; /* yes they really are 64bit pads */ 127 unsigned long __unused2; 128 }; 129 130 struct compat_semid64_ds { 131 struct compat_ipc64_perm sem_perm; 132 unsigned int sem_otime_high; 133 unsigned int sem_otime; 134 unsigned int sem_ctime_high; 135 unsigned int sem_ctime; 136 compat_ulong_t sem_nsems; 137 compat_ulong_t __unused3; 138 compat_ulong_t __unused4; 139 }; 140 141 struct compat_msqid64_ds { 142 struct compat_ipc64_perm msg_perm; 143 unsigned int msg_stime_high; 144 unsigned int msg_stime; 145 unsigned int msg_rtime_high; 146 unsigned int msg_rtime; 147 unsigned int msg_ctime_high; 148 unsigned int msg_ctime; 149 compat_ulong_t msg_cbytes; 150 compat_ulong_t msg_qnum; 151 compat_ulong_t msg_qbytes; 152 compat_pid_t msg_lspid; 153 compat_pid_t msg_lrpid; 154 compat_ulong_t __unused4; 155 compat_ulong_t __unused5; 156 }; 157 158 struct compat_shmid64_ds { 159 struct compat_ipc64_perm shm_perm; 160 unsigned int shm_atime_high; 161 unsigned int shm_atime; 162 unsigned int shm_dtime_high; 163 unsigned int shm_dtime; 164 unsigned int shm_ctime_high; 165 unsigned int shm_ctime; 166 unsigned int __unused4; 167 compat_size_t shm_segsz; 168 compat_pid_t shm_cpid; 169 compat_pid_t shm_lpid; 170 compat_ulong_t shm_nattch; 171 compat_ulong_t __unused5; 172 compat_ulong_t __unused6; 173 }; 174 175 static inline int is_compat_task(void) 176 { 177 return is_32bit_task(); 178 } 179 180 #endif /* __KERNEL__ */ 181 #endif /* _ASM_POWERPC_COMPAT_H */ 182