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84a0c977ab
There are 7 64bit architectures that support Linux COMPAT mode to run 32bit applications. A lot of definitions are duplicate: - COMPAT_USER_HZ - COMPAT_RLIM_INFINITY - COMPAT_OFF_T_MAX - __compat_uid_t, __compat_uid_t - compat_dev_t - compat_ipc_pid_t - struct compat_flock - struct compat_flock64 - struct compat_statfs - struct compat_ipc64_perm, compat_semid64_ds, compat_msqid64_ds, compat_shmid64_ds Cleanup duplicate definitions and merge them into asm-generic. Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Signed-off-by: Guo Ren <guoren@kernel.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Helge Deller <deller@gmx.de> # parisc Link: https://lore.kernel.org/r/20220405071314.3225832-7-guoren@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
117 lines
2.4 KiB
C
117 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_COMPAT_H
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#define _ASM_X86_COMPAT_H
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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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#include <asm/processor.h>
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#include <asm/user32.h>
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#include <asm/unistd.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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#define __compat_uid_t __compat_uid_t
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typedef u16 __compat_uid_t;
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typedef u16 __compat_gid_t;
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#define compat_dev_t compat_dev_t
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typedef u16 compat_dev_t;
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#define compat_ipc_pid_t compat_ipc_pid_t
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typedef u16 compat_ipc_pid_t;
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#define compat_statfs compat_statfs
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#include <asm-generic/compat.h>
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#define COMPAT_UTS_MACHINE "i686\0\0"
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typedef u16 compat_nlink_t;
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struct compat_stat {
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compat_dev_t st_dev;
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u16 __pad1;
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compat_ino_t st_ino;
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compat_mode_t st_mode;
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compat_nlink_t st_nlink;
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__compat_uid_t st_uid;
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__compat_gid_t st_gid;
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compat_dev_t st_rdev;
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u16 __pad2;
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u32 st_size;
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u32 st_blksize;
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u32 st_blocks;
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u32 st_atime;
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u32 st_atime_nsec;
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u32 st_mtime;
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u32 st_mtime_nsec;
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u32 st_ctime;
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u32 st_ctime_nsec;
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u32 __unused4;
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u32 __unused5;
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};
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/*
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* IA32 uses 4 byte alignment for 64 bit quantities, so we need to pack the
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* compat flock64 structure.
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*/
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#define __ARCH_NEED_COMPAT_FLOCK64_PACKED
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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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#ifdef CONFIG_X86_X32_ABI
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#define COMPAT_USE_64BIT_TIME \
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(!!(task_pt_regs(current)->orig_ax & __X32_SYSCALL_BIT))
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#endif
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static inline bool in_x32_syscall(void)
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{
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#ifdef CONFIG_X86_X32_ABI
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if (task_pt_regs(current)->orig_ax & __X32_SYSCALL_BIT)
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return true;
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#endif
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return false;
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}
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static inline bool in_32bit_syscall(void)
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{
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return in_ia32_syscall() || in_x32_syscall();
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}
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#ifdef CONFIG_COMPAT
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static inline bool in_compat_syscall(void)
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{
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return in_32bit_syscall();
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}
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#define in_compat_syscall in_compat_syscall /* override the generic impl */
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#define compat_need_64bit_alignment_fixup in_ia32_syscall
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#endif
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struct compat_siginfo;
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#ifdef CONFIG_X86_X32_ABI
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int copy_siginfo_to_user32(struct compat_siginfo __user *to,
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const kernel_siginfo_t *from);
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#define copy_siginfo_to_user32 copy_siginfo_to_user32
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#endif /* CONFIG_X86_X32_ABI */
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#endif /* _ASM_X86_COMPAT_H */
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