/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2012 ARM Ltd. */ #ifndef __ASM_COMPAT_H #define __ASM_COMPAT_H #include #ifdef CONFIG_COMPAT /* * Architecture specific compatibility types */ #include #include #include #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 #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 /* __ASM_COMPAT_H */