1a33b18b3b
Parts of linux/compat.h are under an #ifdef, but we end up using more of those over time, moving things around bit by bit. To get it over with once and for all, make all of this file uncondititonal now so it can be accessed everywhere. There are only a few types left that are in asm/compat.h but not yet in the asm-generic version, so add those in the process. This requires providing a few more types in asm-generic/compat.h that were not already there. The only tricky one is compat_sigset_t, which needs a little help on 32-bit architectures and for x86. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
192 lines
4.0 KiB
C
192 lines
4.0 KiB
C
/* 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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#define compat_mode_t compat_mode_t
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typedef u16 compat_mode_t;
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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_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 __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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#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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