1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_X86_COMPAT_H 3 #define _ASM_X86_COMPAT_H 4 5 /* 6 * Architecture specific compatibility types 7 */ 8 #include <linux/types.h> 9 #include <linux/sched.h> 10 #include <linux/sched/task_stack.h> 11 #include <asm/processor.h> 12 #include <asm/user32.h> 13 #include <asm/unistd.h> 14 15 #define compat_mode_t compat_mode_t 16 typedef u16 compat_mode_t; 17 18 #define __compat_uid_t __compat_uid_t 19 typedef u16 __compat_uid_t; 20 typedef u16 __compat_gid_t; 21 22 #define compat_dev_t compat_dev_t 23 typedef u16 compat_dev_t; 24 25 #define compat_ipc_pid_t compat_ipc_pid_t 26 typedef u16 compat_ipc_pid_t; 27 28 #define compat_statfs compat_statfs 29 30 #include <asm-generic/compat.h> 31 32 #define COMPAT_UTS_MACHINE "i686\0\0" 33 34 typedef u16 compat_nlink_t; 35 36 struct compat_stat { 37 u32 st_dev; 38 compat_ino_t st_ino; 39 compat_mode_t st_mode; 40 compat_nlink_t st_nlink; 41 __compat_uid_t st_uid; 42 __compat_gid_t st_gid; 43 u32 st_rdev; 44 u32 st_size; 45 u32 st_blksize; 46 u32 st_blocks; 47 u32 st_atime; 48 u32 st_atime_nsec; 49 u32 st_mtime; 50 u32 st_mtime_nsec; 51 u32 st_ctime; 52 u32 st_ctime_nsec; 53 u32 __unused4; 54 u32 __unused5; 55 }; 56 57 /* 58 * IA32 uses 4 byte alignment for 64 bit quantities, so we need to pack the 59 * compat flock64 structure. 60 */ 61 #define __ARCH_NEED_COMPAT_FLOCK64_PACKED 62 63 struct compat_statfs { 64 int f_type; 65 int f_bsize; 66 int f_blocks; 67 int f_bfree; 68 int f_bavail; 69 int f_files; 70 int f_ffree; 71 compat_fsid_t f_fsid; 72 int f_namelen; /* SunOS ignores this field. */ 73 int f_frsize; 74 int f_flags; 75 int f_spare[4]; 76 }; 77 78 #ifdef CONFIG_X86_X32_ABI 79 #define COMPAT_USE_64BIT_TIME \ 80 (!!(task_pt_regs(current)->orig_ax & __X32_SYSCALL_BIT)) 81 #endif 82 in_x32_syscall(void)83static inline bool in_x32_syscall(void) 84 { 85 #ifdef CONFIG_X86_X32_ABI 86 if (task_pt_regs(current)->orig_ax & __X32_SYSCALL_BIT) 87 return true; 88 #endif 89 return false; 90 } 91 in_32bit_syscall(void)92static inline bool in_32bit_syscall(void) 93 { 94 return in_ia32_syscall() || in_x32_syscall(); 95 } 96 97 #ifdef CONFIG_COMPAT in_compat_syscall(void)98static inline bool in_compat_syscall(void) 99 { 100 return in_32bit_syscall(); 101 } 102 #define in_compat_syscall in_compat_syscall /* override the generic impl */ 103 #define compat_need_64bit_alignment_fixup in_ia32_syscall 104 #endif 105 106 struct compat_siginfo; 107 108 #ifdef CONFIG_X86_X32_ABI 109 int copy_siginfo_to_user32(struct compat_siginfo __user *to, 110 const kernel_siginfo_t *from); 111 #define copy_siginfo_to_user32 copy_siginfo_to_user32 112 #endif /* CONFIG_X86_X32_ABI */ 113 114 #endif /* _ASM_X86_COMPAT_H */ 115