Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
David Gibson | 8882a4d | 2005-11-09 13:38:01 +1100 | [diff] [blame] | 2 | #ifndef _ASM_POWERPC_COMPAT_H |
| 3 | #define _ASM_POWERPC_COMPAT_H |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 4 | #ifdef __KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | /* |
| 6 | * Architecture specific compatibility types |
| 7 | */ |
| 8 | #include <linux/types.h> |
| 9 | #include <linux/sched.h> |
| 10 | |
Arnd Bergmann | fb37397 | 2018-04-18 22:01:26 +0200 | [diff] [blame] | 11 | #include <asm-generic/compat.h> |
| 12 | |
Christoph Hellwig | e28cbf2 | 2010-03-10 15:21:19 -0800 | [diff] [blame] | 13 | #define COMPAT_USER_HZ 100 |
Anton Blanchard | 422b9b9 | 2014-03-06 16:10:11 +1100 | [diff] [blame] | 14 | #ifdef __BIG_ENDIAN__ |
Christoph Hellwig | e28cbf2 | 2010-03-10 15:21:19 -0800 | [diff] [blame] | 15 | #define COMPAT_UTS_MACHINE "ppc\0\0" |
Anton Blanchard | 422b9b9 | 2014-03-06 16:10:11 +1100 | [diff] [blame] | 16 | #else |
| 17 | #define COMPAT_UTS_MACHINE "ppcle\0\0" |
| 18 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | |
Stephen Rothwell | 202e597 | 2005-09-06 15:16:40 -0700 | [diff] [blame] | 20 | typedef u32 __compat_uid_t; |
| 21 | typedef u32 __compat_gid_t; |
| 22 | typedef u32 __compat_uid32_t; |
| 23 | typedef u32 __compat_gid32_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | typedef u32 compat_mode_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | typedef u32 compat_dev_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | typedef s16 compat_nlink_t; |
| 27 | typedef u16 compat_ipc_pid_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | typedef u32 compat_caddr_t; |
| 29 | typedef __kernel_fsid_t compat_fsid_t; |
Arnd Bergmann | 4b77758 | 2007-07-15 23:41:11 -0700 | [diff] [blame] | 30 | typedef s64 compat_s64; |
Arnd Bergmann | 4b77758 | 2007-07-15 23:41:11 -0700 | [diff] [blame] | 31 | typedef u64 compat_u64; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | struct compat_stat { |
| 34 | compat_dev_t st_dev; |
| 35 | compat_ino_t st_ino; |
| 36 | compat_mode_t st_mode; |
David Gibson | 8882a4d | 2005-11-09 13:38:01 +1100 | [diff] [blame] | 37 | compat_nlink_t st_nlink; |
Stephen Rothwell | 202e597 | 2005-09-06 15:16:40 -0700 | [diff] [blame] | 38 | __compat_uid32_t st_uid; |
| 39 | __compat_gid32_t st_gid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | compat_dev_t st_rdev; |
| 41 | compat_off_t st_size; |
| 42 | compat_off_t st_blksize; |
| 43 | compat_off_t st_blocks; |
Arnd Bergmann | 9afc5ee | 2018-07-13 12:52:28 +0200 | [diff] [blame] | 44 | old_time32_t st_atime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | u32 st_atime_nsec; |
Arnd Bergmann | 9afc5ee | 2018-07-13 12:52:28 +0200 | [diff] [blame] | 46 | old_time32_t st_mtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | u32 st_mtime_nsec; |
Arnd Bergmann | 9afc5ee | 2018-07-13 12:52:28 +0200 | [diff] [blame] | 48 | old_time32_t st_ctime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | u32 st_ctime_nsec; |
| 50 | u32 __unused4[2]; |
| 51 | }; |
| 52 | |
| 53 | struct compat_flock { |
| 54 | short l_type; |
| 55 | short l_whence; |
| 56 | compat_off_t l_start; |
| 57 | compat_off_t l_len; |
| 58 | compat_pid_t l_pid; |
| 59 | }; |
| 60 | |
| 61 | #define F_GETLK64 12 /* using 'struct flock64' */ |
| 62 | #define F_SETLK64 13 |
| 63 | #define F_SETLKW64 14 |
| 64 | |
| 65 | struct compat_flock64 { |
| 66 | short l_type; |
| 67 | short l_whence; |
| 68 | compat_loff_t l_start; |
| 69 | compat_loff_t l_len; |
| 70 | compat_pid_t l_pid; |
| 71 | }; |
| 72 | |
| 73 | struct compat_statfs { |
| 74 | int f_type; |
| 75 | int f_bsize; |
| 76 | int f_blocks; |
| 77 | int f_bfree; |
| 78 | int f_bavail; |
| 79 | int f_files; |
| 80 | int f_ffree; |
| 81 | compat_fsid_t f_fsid; |
| 82 | int f_namelen; /* SunOS ignores this field. */ |
| 83 | int f_frsize; |
Eric W. Biederman | 1448c72 | 2011-10-17 13:40:02 -0700 | [diff] [blame] | 84 | int f_flags; |
| 85 | int f_spare[4]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | }; |
| 87 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | #define COMPAT_RLIM_INFINITY 0xffffffff |
| 89 | |
| 90 | typedef u32 compat_old_sigset_t; |
| 91 | |
| 92 | #define _COMPAT_NSIG 64 |
| 93 | #define _COMPAT_NSIG_BPW 32 |
| 94 | |
| 95 | typedef u32 compat_sigset_word; |
| 96 | |
| 97 | #define COMPAT_OFF_T_MAX 0x7fffffff |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | |
| 99 | /* |
| 100 | * A pointer passed in from user mode. This should not |
| 101 | * be used for syscall parameters, just declare them |
| 102 | * as pointers because the syscall entry code will have |
Marcin Ĺšlusarz | 8b3de0d | 2008-02-03 16:32:51 +0200 | [diff] [blame] | 103 | * appropriately converted them already. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | |
| 106 | static inline void __user *compat_ptr(compat_uptr_t uptr) |
| 107 | { |
| 108 | return (void __user *)(unsigned long)uptr; |
| 109 | } |
| 110 | |
Al Viro | 29e646d | 2006-02-01 05:28:09 -0500 | [diff] [blame] | 111 | static inline compat_uptr_t ptr_to_compat(void __user *uptr) |
| 112 | { |
| 113 | return (u32)(unsigned long)uptr; |
| 114 | } |
| 115 | |
H. Peter Anvin | c41d68a | 2010-09-07 16:16:18 -0700 | [diff] [blame] | 116 | static inline void __user *arch_compat_alloc_user_space(long len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | { |
| 118 | struct pt_regs *regs = current->thread.regs; |
| 119 | unsigned long usp = regs->gpr[1]; |
| 120 | |
| 121 | /* |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 122 | * We can't access below the stack pointer in the 32bit ABI and |
Paul Mackerras | 573ebfa | 2014-02-26 17:07:38 +1100 | [diff] [blame] | 123 | * can access 288 bytes in the 64bit big-endian ABI, |
| 124 | * or 512 bytes with the new ELFv2 little-endian ABI. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | */ |
Denis Kirjanov | cab175f | 2010-08-27 03:49:11 +0000 | [diff] [blame] | 126 | if (!is_32bit_task()) |
Paul Mackerras | 573ebfa | 2014-02-26 17:07:38 +1100 | [diff] [blame] | 127 | usp -= USER_REDZONE_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
| 129 | return (void __user *) (usp - len); |
| 130 | } |
| 131 | |
| 132 | /* |
| 133 | * ipc64_perm is actually 32/64bit clean but since the compat layer refers to |
| 134 | * it we may as well define it. |
| 135 | */ |
| 136 | struct compat_ipc64_perm { |
| 137 | compat_key_t key; |
Stephen Rothwell | 202e597 | 2005-09-06 15:16:40 -0700 | [diff] [blame] | 138 | __compat_uid_t uid; |
| 139 | __compat_gid_t gid; |
| 140 | __compat_uid_t cuid; |
| 141 | __compat_gid_t cgid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | compat_mode_t mode; |
| 143 | unsigned int seq; |
| 144 | unsigned int __pad2; |
| 145 | unsigned long __unused1; /* yes they really are 64bit pads */ |
| 146 | unsigned long __unused2; |
| 147 | }; |
| 148 | |
| 149 | struct compat_semid64_ds { |
| 150 | struct compat_ipc64_perm sem_perm; |
Arnd Bergmann | d0b67de | 2015-05-05 23:19:43 +0200 | [diff] [blame] | 151 | unsigned int sem_otime_high; |
| 152 | unsigned int sem_otime; |
| 153 | unsigned int sem_ctime_high; |
| 154 | unsigned int sem_ctime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | compat_ulong_t sem_nsems; |
| 156 | compat_ulong_t __unused3; |
| 157 | compat_ulong_t __unused4; |
| 158 | }; |
| 159 | |
| 160 | struct compat_msqid64_ds { |
| 161 | struct compat_ipc64_perm msg_perm; |
Arnd Bergmann | d0b67de | 2015-05-05 23:19:43 +0200 | [diff] [blame] | 162 | unsigned int msg_stime_high; |
| 163 | unsigned int msg_stime; |
| 164 | unsigned int msg_rtime_high; |
| 165 | unsigned int msg_rtime; |
| 166 | unsigned int msg_ctime_high; |
| 167 | unsigned int msg_ctime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | compat_ulong_t msg_cbytes; |
| 169 | compat_ulong_t msg_qnum; |
| 170 | compat_ulong_t msg_qbytes; |
| 171 | compat_pid_t msg_lspid; |
| 172 | compat_pid_t msg_lrpid; |
| 173 | compat_ulong_t __unused4; |
| 174 | compat_ulong_t __unused5; |
| 175 | }; |
| 176 | |
| 177 | struct compat_shmid64_ds { |
| 178 | struct compat_ipc64_perm shm_perm; |
Arnd Bergmann | d0b67de | 2015-05-05 23:19:43 +0200 | [diff] [blame] | 179 | unsigned int shm_atime_high; |
| 180 | unsigned int shm_atime; |
| 181 | unsigned int shm_dtime_high; |
| 182 | unsigned int shm_dtime; |
| 183 | unsigned int shm_ctime_high; |
| 184 | unsigned int shm_ctime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | unsigned int __unused4; |
| 186 | compat_size_t shm_segsz; |
| 187 | compat_pid_t shm_cpid; |
| 188 | compat_pid_t shm_lpid; |
| 189 | compat_ulong_t shm_nattch; |
| 190 | compat_ulong_t __unused5; |
| 191 | compat_ulong_t __unused6; |
| 192 | }; |
| 193 | |
Roland McGrath | 5b10174 | 2009-02-27 23:25:54 -0800 | [diff] [blame] | 194 | static inline int is_compat_task(void) |
| 195 | { |
Denis Kirjanov | cab175f | 2010-08-27 03:49:11 +0000 | [diff] [blame] | 196 | return is_32bit_task(); |
Roland McGrath | 5b10174 | 2009-02-27 23:25:54 -0800 | [diff] [blame] | 197 | } |
| 198 | |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 199 | #endif /* __KERNEL__ */ |
David Gibson | 8882a4d | 2005-11-09 13:38:01 +1100 | [diff] [blame] | 200 | #endif /* _ASM_POWERPC_COMPAT_H */ |