| /* |
| * Copyright (C) 2012 ARM Ltd. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| #ifndef __ASM_COMPAT_H |
| #define __ASM_COMPAT_H |
| #ifdef __KERNEL__ |
| #ifdef CONFIG_COMPAT |
| |
| /* |
| * Architecture specific compatibility types |
| */ |
| #include <linux/types.h> |
| #include <linux/sched.h> |
| #include <linux/sched/task_stack.h> |
| |
| #include <asm-generic/compat.h> |
| |
| #define COMPAT_USER_HZ 100 |
| #ifdef __AARCH64EB__ |
| #define COMPAT_UTS_MACHINE "armv8b\0\0" |
| #else |
| #define COMPAT_UTS_MACHINE "armv8l\0\0" |
| #endif |
| |
| typedef u16 __compat_uid_t; |
| typedef u16 __compat_gid_t; |
| typedef u16 __compat_uid16_t; |
| typedef u16 __compat_gid16_t; |
| typedef u32 __compat_uid32_t; |
| typedef u32 __compat_gid32_t; |
| typedef u16 compat_mode_t; |
| typedef u32 compat_dev_t; |
| typedef s32 compat_nlink_t; |
| typedef u16 compat_ipc_pid_t; |
| typedef u32 compat_caddr_t; |
| typedef __kernel_fsid_t compat_fsid_t; |
| typedef s64 compat_s64; |
| typedef u64 compat_u64; |
| |
| struct compat_stat { |
| #ifdef __AARCH64EB__ |
| short st_dev; |
| short __pad1; |
| #else |
| compat_dev_t st_dev; |
| #endif |
| compat_ino_t st_ino; |
| compat_mode_t st_mode; |
| compat_ushort_t st_nlink; |
| __compat_uid16_t st_uid; |
| __compat_gid16_t st_gid; |
| #ifdef __AARCH64EB__ |
| short st_rdev; |
| short __pad2; |
| #else |
| compat_dev_t st_rdev; |
| #endif |
| compat_off_t st_size; |
| compat_off_t st_blksize; |
| compat_off_t st_blocks; |
| old_time32_t st_atime; |
| compat_ulong_t st_atime_nsec; |
| old_time32_t st_mtime; |
| compat_ulong_t st_mtime_nsec; |
| old_time32_t st_ctime; |
| compat_ulong_t st_ctime_nsec; |
| compat_ulong_t __unused4[2]; |
| }; |
| |
| struct compat_flock { |
| short l_type; |
| short l_whence; |
| compat_off_t l_start; |
| compat_off_t l_len; |
| compat_pid_t l_pid; |
| }; |
| |
| #define F_GETLK64 12 /* using 'struct flock64' */ |
| #define F_SETLK64 13 |
| #define F_SETLKW64 14 |
| |
| struct compat_flock64 { |
| short l_type; |
| short l_whence; |
| compat_loff_t l_start; |
| compat_loff_t l_len; |
| compat_pid_t l_pid; |
| }; |
| |
| struct compat_statfs { |
| int f_type; |
| int f_bsize; |
| int f_blocks; |
| int f_bfree; |
| int f_bavail; |
| int f_files; |
| int f_ffree; |
| compat_fsid_t f_fsid; |
| int f_namelen; /* SunOS ignores this field. */ |
| int f_frsize; |
| int f_flags; |
| int f_spare[4]; |
| }; |
| |
| #define COMPAT_RLIM_INFINITY 0xffffffff |
| |
| typedef u32 compat_old_sigset_t; |
| |
| #define _COMPAT_NSIG 64 |
| #define _COMPAT_NSIG_BPW 32 |
| |
| typedef u32 compat_sigset_word; |
| |
| #define COMPAT_OFF_T_MAX 0x7fffffff |
| |
| /* |
| * A pointer passed in from user mode. This should not |
| * be used for syscall parameters, just declare them |
| * as pointers because the syscall entry code will have |
| * appropriately converted them already. |
| */ |
| |
| static inline void __user *compat_ptr(compat_uptr_t uptr) |
| { |
| return (void __user *)(unsigned long)uptr; |
| } |
| |
| static inline compat_uptr_t ptr_to_compat(void __user *uptr) |
| { |
| return (u32)(unsigned long)uptr; |
| } |
| |
| #define compat_user_stack_pointer() (user_stack_pointer(task_pt_regs(current))) |
| #define COMPAT_MINSIGSTKSZ 2048 |
| |
| static inline void __user *arch_compat_alloc_user_space(long len) |
| { |
| return (void __user *)compat_user_stack_pointer() - len; |
| } |
| |
| struct compat_ipc64_perm { |
| compat_key_t key; |
| __compat_uid32_t uid; |
| __compat_gid32_t gid; |
| __compat_uid32_t cuid; |
| __compat_gid32_t cgid; |
| unsigned short mode; |
| unsigned short __pad1; |
| unsigned short seq; |
| unsigned short __pad2; |
| compat_ulong_t unused1; |
| compat_ulong_t unused2; |
| }; |
| |
| struct compat_semid64_ds { |
| struct compat_ipc64_perm sem_perm; |
| compat_ulong_t sem_otime; |
| compat_ulong_t sem_otime_high; |
| compat_ulong_t sem_ctime; |
| compat_ulong_t sem_ctime_high; |
| compat_ulong_t sem_nsems; |
| compat_ulong_t __unused3; |
| compat_ulong_t __unused4; |
| }; |
| |
| struct compat_msqid64_ds { |
| struct compat_ipc64_perm msg_perm; |
| compat_ulong_t msg_stime; |
| compat_ulong_t msg_stime_high; |
| compat_ulong_t msg_rtime; |
| compat_ulong_t msg_rtime_high; |
| compat_ulong_t msg_ctime; |
| compat_ulong_t msg_ctime_high; |
| compat_ulong_t msg_cbytes; |
| compat_ulong_t msg_qnum; |
| compat_ulong_t msg_qbytes; |
| compat_pid_t msg_lspid; |
| compat_pid_t msg_lrpid; |
| compat_ulong_t __unused4; |
| compat_ulong_t __unused5; |
| }; |
| |
| struct compat_shmid64_ds { |
| struct compat_ipc64_perm shm_perm; |
| compat_size_t shm_segsz; |
| compat_ulong_t shm_atime; |
| compat_ulong_t shm_atime_high; |
| compat_ulong_t shm_dtime; |
| compat_ulong_t shm_dtime_high; |
| compat_ulong_t shm_ctime; |
| compat_ulong_t shm_ctime_high; |
| compat_pid_t shm_cpid; |
| compat_pid_t shm_lpid; |
| compat_ulong_t shm_nattch; |
| compat_ulong_t __unused4; |
| compat_ulong_t __unused5; |
| }; |
| |
| static inline int is_compat_task(void) |
| { |
| return test_thread_flag(TIF_32BIT); |
| } |
| |
| static inline int is_compat_thread(struct thread_info *thread) |
| { |
| return test_ti_thread_flag(thread, TIF_32BIT); |
| } |
| |
| #else /* !CONFIG_COMPAT */ |
| |
| static inline int is_compat_thread(struct thread_info *thread) |
| { |
| return 0; |
| } |
| |
| #endif /* CONFIG_COMPAT */ |
| #endif /* __KERNEL__ */ |
| #endif /* __ASM_COMPAT_H */ |