/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 ARM Ltd.
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*/
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#ifndef __ASM_COMPAT_H
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#define __ASM_COMPAT_H
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#include <asm-generic/compat.h>
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#ifdef CONFIG_COMPAT
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/*
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* Architecture specific compatibility types
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*/
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#include <linux/types.h>
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#include <linux/sched.h>
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#include <linux/sched/task_stack.h>
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#define COMPAT_USER_HZ 100
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#ifdef __AARCH64EB__
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#define COMPAT_UTS_MACHINE "armv8b\0\0"
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#else
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#define COMPAT_UTS_MACHINE "armv8l\0\0"
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#endif
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typedef u16 __compat_uid_t;
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typedef u16 __compat_gid_t;
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typedef u16 __compat_uid16_t;
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typedef u16 __compat_gid16_t;
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typedef u32 __compat_uid32_t;
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typedef u32 __compat_gid32_t;
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typedef u16 compat_mode_t;
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typedef u32 compat_dev_t;
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typedef s32 compat_nlink_t;
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typedef u16 compat_ipc_pid_t;
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typedef u32 compat_caddr_t;
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typedef __kernel_fsid_t compat_fsid_t;
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struct compat_stat {
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#ifdef __AARCH64EB__
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short st_dev;
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short __pad1;
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#else
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compat_dev_t st_dev;
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#endif
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compat_ino_t st_ino;
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compat_mode_t st_mode;
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compat_ushort_t st_nlink;
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__compat_uid16_t st_uid;
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__compat_gid16_t st_gid;
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#ifdef __AARCH64EB__
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short st_rdev;
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short __pad2;
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#else
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compat_dev_t st_rdev;
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#endif
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compat_off_t st_size;
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compat_off_t st_blksize;
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compat_off_t st_blocks;
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old_time32_t st_atime;
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compat_ulong_t st_atime_nsec;
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old_time32_t st_mtime;
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compat_ulong_t st_mtime_nsec;
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old_time32_t st_ctime;
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compat_ulong_t st_ctime_nsec;
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compat_ulong_t __unused4[2];
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};
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struct compat_flock {
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short l_type;
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short l_whence;
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compat_off_t l_start;
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compat_off_t l_len;
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compat_pid_t l_pid;
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};
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#define F_GETLK64 12 /* using 'struct flock64' */
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#define F_SETLK64 13
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#define F_SETLKW64 14
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struct compat_flock64 {
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short l_type;
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short l_whence;
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compat_loff_t l_start;
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compat_loff_t l_len;
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compat_pid_t l_pid;
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};
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struct compat_statfs {
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int f_type;
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int f_bsize;
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int f_blocks;
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int f_bfree;
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int f_bavail;
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int f_files;
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int f_ffree;
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compat_fsid_t f_fsid;
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int f_namelen; /* SunOS ignores this field. */
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int f_frsize;
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int f_flags;
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int f_spare[4];
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};
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#define COMPAT_RLIM_INFINITY 0xffffffff
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typedef u32 compat_old_sigset_t;
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#define _COMPAT_NSIG 64
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#define _COMPAT_NSIG_BPW 32
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typedef u32 compat_sigset_word;
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#define COMPAT_OFF_T_MAX 0x7fffffff
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#define compat_user_stack_pointer() (user_stack_pointer(task_pt_regs(current)))
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#define COMPAT_MINSIGSTKSZ 2048
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static inline void __user *arch_compat_alloc_user_space(long len)
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{
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return (void __user *)compat_user_stack_pointer() - len;
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}
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struct compat_ipc64_perm {
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compat_key_t key;
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__compat_uid32_t uid;
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__compat_gid32_t gid;
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__compat_uid32_t cuid;
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__compat_gid32_t cgid;
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unsigned short mode;
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unsigned short __pad1;
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unsigned short seq;
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unsigned short __pad2;
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compat_ulong_t unused1;
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compat_ulong_t unused2;
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};
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struct compat_semid64_ds {
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struct compat_ipc64_perm sem_perm;
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compat_ulong_t sem_otime;
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compat_ulong_t sem_otime_high;
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compat_ulong_t sem_ctime;
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compat_ulong_t sem_ctime_high;
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compat_ulong_t sem_nsems;
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compat_ulong_t __unused3;
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compat_ulong_t __unused4;
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};
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struct compat_msqid64_ds {
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struct compat_ipc64_perm msg_perm;
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compat_ulong_t msg_stime;
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compat_ulong_t msg_stime_high;
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compat_ulong_t msg_rtime;
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compat_ulong_t msg_rtime_high;
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compat_ulong_t msg_ctime;
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compat_ulong_t msg_ctime_high;
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compat_ulong_t msg_cbytes;
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compat_ulong_t msg_qnum;
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compat_ulong_t msg_qbytes;
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compat_pid_t msg_lspid;
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compat_pid_t msg_lrpid;
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compat_ulong_t __unused4;
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compat_ulong_t __unused5;
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};
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struct compat_shmid64_ds {
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struct compat_ipc64_perm shm_perm;
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compat_size_t shm_segsz;
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compat_ulong_t shm_atime;
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compat_ulong_t shm_atime_high;
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compat_ulong_t shm_dtime;
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compat_ulong_t shm_dtime_high;
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compat_ulong_t shm_ctime;
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compat_ulong_t shm_ctime_high;
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compat_pid_t shm_cpid;
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compat_pid_t shm_lpid;
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compat_ulong_t shm_nattch;
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compat_ulong_t __unused4;
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compat_ulong_t __unused5;
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};
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static inline int is_compat_task(void)
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{
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return test_thread_flag(TIF_32BIT);
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}
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static inline int is_compat_thread(struct thread_info *thread)
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{
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return test_ti_thread_flag(thread, TIF_32BIT);
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}
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#else /* !CONFIG_COMPAT */
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static inline int is_compat_thread(struct thread_info *thread)
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{
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return 0;
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}
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#endif /* CONFIG_COMPAT */
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#endif /* __ASM_COMPAT_H */
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