1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2c6557e7fSMartin Schwidefsky #ifndef _ASM_S390X_COMPAT_H 3c6557e7fSMartin Schwidefsky #define _ASM_S390X_COMPAT_H 4c6557e7fSMartin Schwidefsky /* 5c6557e7fSMartin Schwidefsky * Architecture specific compatibility types 6c6557e7fSMartin Schwidefsky */ 7c6557e7fSMartin Schwidefsky #include <linux/types.h> 8c6557e7fSMartin Schwidefsky #include <linux/sched.h> 968db0cf1SIngo Molnar #include <linux/sched/task_stack.h> 107757591aSHeiko Carstens #include <linux/thread_info.h> 11c6557e7fSMartin Schwidefsky 12*1a33b18bSArnd Bergmann #define compat_mode_t compat_mode_t 13*1a33b18bSArnd Bergmann typedef u16 compat_mode_t; 14*1a33b18bSArnd Bergmann 15fb373975SArnd Bergmann #include <asm-generic/compat.h> 16fb373975SArnd Bergmann 174f59c718SAl Viro #define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \ 184f59c718SAl Viro typeof(0?(__force t)0:0ULL), u64)) 199a205286SHeiko Carstens 209a205286SHeiko Carstens #define __SC_DELOUSE(t,v) ({ \ 219a205286SHeiko Carstens BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \ 224f59c718SAl Viro (__force t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \ 239a205286SHeiko Carstens }) 2446836613SAl Viro 25c6557e7fSMartin Schwidefsky #define PSW32_MASK_PER 0x40000000UL 26c6557e7fSMartin Schwidefsky #define PSW32_MASK_DAT 0x04000000UL 27c6557e7fSMartin Schwidefsky #define PSW32_MASK_IO 0x02000000UL 28c6557e7fSMartin Schwidefsky #define PSW32_MASK_EXT 0x01000000UL 29c6557e7fSMartin Schwidefsky #define PSW32_MASK_KEY 0x00F00000UL 30b50511e4SMartin Schwidefsky #define PSW32_MASK_BASE 0x00080000UL /* Always one */ 31c6557e7fSMartin Schwidefsky #define PSW32_MASK_MCHECK 0x00040000UL 32c6557e7fSMartin Schwidefsky #define PSW32_MASK_WAIT 0x00020000UL 33c6557e7fSMartin Schwidefsky #define PSW32_MASK_PSTATE 0x00010000UL 34c6557e7fSMartin Schwidefsky #define PSW32_MASK_ASC 0x0000C000UL 35c6557e7fSMartin Schwidefsky #define PSW32_MASK_CC 0x00003000UL 36c6557e7fSMartin Schwidefsky #define PSW32_MASK_PM 0x00000f00UL 375ebf250dSHeiko Carstens #define PSW32_MASK_RI 0x00000080UL 38c6557e7fSMartin Schwidefsky 39fa968ee2SMartin Schwidefsky #define PSW32_MASK_USER 0x0000FF00UL 40b50511e4SMartin Schwidefsky 41b50511e4SMartin Schwidefsky #define PSW32_ADDR_AMODE 0x80000000UL 42c6557e7fSMartin Schwidefsky #define PSW32_ADDR_INSN 0x7FFFFFFFUL 43c6557e7fSMartin Schwidefsky 44b50511e4SMartin Schwidefsky #define PSW32_DEFAULT_KEY (((u32) PAGE_DEFAULT_ACC) << 20) 45c6557e7fSMartin Schwidefsky 46c6557e7fSMartin Schwidefsky #define PSW32_ASC_PRIMARY 0x00000000UL 47c6557e7fSMartin Schwidefsky #define PSW32_ASC_ACCREG 0x00004000UL 48c6557e7fSMartin Schwidefsky #define PSW32_ASC_SECONDARY 0x00008000UL 49c6557e7fSMartin Schwidefsky #define PSW32_ASC_HOME 0x0000C000UL 50c6557e7fSMartin Schwidefsky 51f26946d7SHeiko Carstens #define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \ 52f26946d7SHeiko Carstens PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \ 53075dfd82SHeiko Carstens PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \ 54075dfd82SHeiko Carstens PSW32_ASC_PRIMARY) 55c6557e7fSMartin Schwidefsky 56c6557e7fSMartin Schwidefsky #define COMPAT_USER_HZ 100 57e28cbf22SChristoph Hellwig #define COMPAT_UTS_MACHINE "s390\0\0\0\0" 58c6557e7fSMartin Schwidefsky 59c6557e7fSMartin Schwidefsky typedef u16 __compat_uid_t; 60c6557e7fSMartin Schwidefsky typedef u16 __compat_gid_t; 61c6557e7fSMartin Schwidefsky typedef u16 compat_dev_t; 62c6557e7fSMartin Schwidefsky typedef u16 compat_nlink_t; 63c6557e7fSMartin Schwidefsky typedef u16 compat_ipc_pid_t; 64c6557e7fSMartin Schwidefsky typedef __kernel_fsid_t compat_fsid_t; 65c6557e7fSMartin Schwidefsky 66e4371f60SHeiko Carstens typedef struct { 67e4371f60SHeiko Carstens u32 mask; 68e4371f60SHeiko Carstens u32 addr; 69e4371f60SHeiko Carstens } __aligned(8) psw_compat_t; 70e4371f60SHeiko Carstens 71e4371f60SHeiko Carstens typedef struct { 72e4371f60SHeiko Carstens psw_compat_t psw; 73e4371f60SHeiko Carstens u32 gprs[NUM_GPRS]; 74e4371f60SHeiko Carstens u32 acrs[NUM_ACRS]; 75e4371f60SHeiko Carstens u32 orig_gpr2; 76e4371f60SHeiko Carstens } s390_compat_regs; 77e4371f60SHeiko Carstens 78e4371f60SHeiko Carstens typedef struct { 79e4371f60SHeiko Carstens u32 gprs_high[NUM_GPRS]; 80e4371f60SHeiko Carstens } s390_compat_regs_high; 81e4371f60SHeiko Carstens 82c6557e7fSMartin Schwidefsky struct compat_stat { 83c6557e7fSMartin Schwidefsky compat_dev_t st_dev; 84c6557e7fSMartin Schwidefsky u16 __pad1; 85c6557e7fSMartin Schwidefsky compat_ino_t st_ino; 86c6557e7fSMartin Schwidefsky compat_mode_t st_mode; 87c6557e7fSMartin Schwidefsky compat_nlink_t st_nlink; 88c6557e7fSMartin Schwidefsky __compat_uid_t st_uid; 89c6557e7fSMartin Schwidefsky __compat_gid_t st_gid; 90c6557e7fSMartin Schwidefsky compat_dev_t st_rdev; 91c6557e7fSMartin Schwidefsky u16 __pad2; 92c6557e7fSMartin Schwidefsky u32 st_size; 93c6557e7fSMartin Schwidefsky u32 st_blksize; 94c6557e7fSMartin Schwidefsky u32 st_blocks; 95c6557e7fSMartin Schwidefsky u32 st_atime; 96c6557e7fSMartin Schwidefsky u32 st_atime_nsec; 97c6557e7fSMartin Schwidefsky u32 st_mtime; 98c6557e7fSMartin Schwidefsky u32 st_mtime_nsec; 99c6557e7fSMartin Schwidefsky u32 st_ctime; 100c6557e7fSMartin Schwidefsky u32 st_ctime_nsec; 101c6557e7fSMartin Schwidefsky u32 __unused4; 102c6557e7fSMartin Schwidefsky u32 __unused5; 103c6557e7fSMartin Schwidefsky }; 104c6557e7fSMartin Schwidefsky 105c6557e7fSMartin Schwidefsky struct compat_flock { 106c6557e7fSMartin Schwidefsky short l_type; 107c6557e7fSMartin Schwidefsky short l_whence; 108c6557e7fSMartin Schwidefsky compat_off_t l_start; 109c6557e7fSMartin Schwidefsky compat_off_t l_len; 110c6557e7fSMartin Schwidefsky compat_pid_t l_pid; 111c6557e7fSMartin Schwidefsky }; 112c6557e7fSMartin Schwidefsky 113c6557e7fSMartin Schwidefsky #define F_GETLK64 12 114c6557e7fSMartin Schwidefsky #define F_SETLK64 13 115c6557e7fSMartin Schwidefsky #define F_SETLKW64 14 116c6557e7fSMartin Schwidefsky 117c6557e7fSMartin Schwidefsky struct compat_flock64 { 118c6557e7fSMartin Schwidefsky short l_type; 119c6557e7fSMartin Schwidefsky short l_whence; 120c6557e7fSMartin Schwidefsky compat_loff_t l_start; 121c6557e7fSMartin Schwidefsky compat_loff_t l_len; 122c6557e7fSMartin Schwidefsky compat_pid_t l_pid; 123c6557e7fSMartin Schwidefsky }; 124c6557e7fSMartin Schwidefsky 125c6557e7fSMartin Schwidefsky struct compat_statfs { 126b8668fd0SHeiko Carstens u32 f_type; 127b8668fd0SHeiko Carstens u32 f_bsize; 128b8668fd0SHeiko Carstens u32 f_blocks; 129b8668fd0SHeiko Carstens u32 f_bfree; 130b8668fd0SHeiko Carstens u32 f_bavail; 131b8668fd0SHeiko Carstens u32 f_files; 132b8668fd0SHeiko Carstens u32 f_ffree; 133c6557e7fSMartin Schwidefsky compat_fsid_t f_fsid; 134b8668fd0SHeiko Carstens u32 f_namelen; 135b8668fd0SHeiko Carstens u32 f_frsize; 136b8668fd0SHeiko Carstens u32 f_flags; 137b8668fd0SHeiko Carstens u32 f_spare[4]; 138b8668fd0SHeiko Carstens }; 139b8668fd0SHeiko Carstens 140b8668fd0SHeiko Carstens struct compat_statfs64 { 141b8668fd0SHeiko Carstens u32 f_type; 142b8668fd0SHeiko Carstens u32 f_bsize; 143b8668fd0SHeiko Carstens u64 f_blocks; 144b8668fd0SHeiko Carstens u64 f_bfree; 145b8668fd0SHeiko Carstens u64 f_bavail; 146b8668fd0SHeiko Carstens u64 f_files; 147b8668fd0SHeiko Carstens u64 f_ffree; 148b8668fd0SHeiko Carstens compat_fsid_t f_fsid; 149b8668fd0SHeiko Carstens u32 f_namelen; 150b8668fd0SHeiko Carstens u32 f_frsize; 151b8668fd0SHeiko Carstens u32 f_flags; 152b8668fd0SHeiko Carstens u32 f_spare[4]; 153c6557e7fSMartin Schwidefsky }; 154c6557e7fSMartin Schwidefsky 155c6557e7fSMartin Schwidefsky #define COMPAT_RLIM_INFINITY 0xffffffff 156c6557e7fSMartin Schwidefsky 157c6557e7fSMartin Schwidefsky #define COMPAT_OFF_T_MAX 0x7fffffff 158c6557e7fSMartin Schwidefsky 159c6557e7fSMartin Schwidefsky /* 160c6557e7fSMartin Schwidefsky * A pointer passed in from user mode. This should not 161c6557e7fSMartin Schwidefsky * be used for syscall parameters, just declare them 162c6557e7fSMartin Schwidefsky * as pointers because the syscall entry code will have 163c6557e7fSMartin Schwidefsky * appropriately converted them already. 164c6557e7fSMartin Schwidefsky */ 165c6557e7fSMartin Schwidefsky 166c6557e7fSMartin Schwidefsky static inline void __user *compat_ptr(compat_uptr_t uptr) 167c6557e7fSMartin Schwidefsky { 168c6557e7fSMartin Schwidefsky return (void __user *)(unsigned long)(uptr & 0x7fffffffUL); 169c6557e7fSMartin Schwidefsky } 170202bf8d7SArnd Bergmann #define compat_ptr(uptr) compat_ptr(uptr) 171c6557e7fSMartin Schwidefsky 1727757591aSHeiko Carstens #ifdef CONFIG_COMPAT 1737757591aSHeiko Carstens 1747757591aSHeiko Carstens static inline int is_compat_task(void) 1757757591aSHeiko Carstens { 1769eb31be3SHeiko Carstens return test_thread_flag(TIF_31BIT); 1777757591aSHeiko Carstens } 1787757591aSHeiko Carstens 179c41d68a5SH. Peter Anvin static inline void __user *arch_compat_alloc_user_space(long len) 180c6557e7fSMartin Schwidefsky { 181c6557e7fSMartin Schwidefsky unsigned long stack; 182c6557e7fSMartin Schwidefsky 183c6557e7fSMartin Schwidefsky stack = KSTK_ESP(current); 1847757591aSHeiko Carstens if (is_compat_task()) 185c6557e7fSMartin Schwidefsky stack &= 0x7fffffffUL; 186c6557e7fSMartin Schwidefsky return (void __user *) (stack - len); 187c6557e7fSMartin Schwidefsky } 188c6557e7fSMartin Schwidefsky 1890f58104cSHeiko Carstens #endif 1900f58104cSHeiko Carstens 191c6557e7fSMartin Schwidefsky struct compat_ipc64_perm { 192c6557e7fSMartin Schwidefsky compat_key_t key; 193c6557e7fSMartin Schwidefsky __compat_uid32_t uid; 194c6557e7fSMartin Schwidefsky __compat_gid32_t gid; 195c6557e7fSMartin Schwidefsky __compat_uid32_t cuid; 196c6557e7fSMartin Schwidefsky __compat_gid32_t cgid; 197c6557e7fSMartin Schwidefsky compat_mode_t mode; 198c6557e7fSMartin Schwidefsky unsigned short __pad1; 199c6557e7fSMartin Schwidefsky unsigned short seq; 200c6557e7fSMartin Schwidefsky unsigned short __pad2; 201c6557e7fSMartin Schwidefsky unsigned int __unused1; 202c6557e7fSMartin Schwidefsky unsigned int __unused2; 203c6557e7fSMartin Schwidefsky }; 204c6557e7fSMartin Schwidefsky 205c6557e7fSMartin Schwidefsky struct compat_semid64_ds { 206c6557e7fSMartin Schwidefsky struct compat_ipc64_perm sem_perm; 20726293b31SArnd Bergmann compat_ulong_t sem_otime; 20826293b31SArnd Bergmann compat_ulong_t sem_otime_high; 20926293b31SArnd Bergmann compat_ulong_t sem_ctime; 21026293b31SArnd Bergmann compat_ulong_t sem_ctime_high; 211c6557e7fSMartin Schwidefsky compat_ulong_t sem_nsems; 212c6557e7fSMartin Schwidefsky compat_ulong_t __unused1; 213c6557e7fSMartin Schwidefsky compat_ulong_t __unused2; 214c6557e7fSMartin Schwidefsky }; 215c6557e7fSMartin Schwidefsky 216c6557e7fSMartin Schwidefsky struct compat_msqid64_ds { 217c6557e7fSMartin Schwidefsky struct compat_ipc64_perm msg_perm; 21826293b31SArnd Bergmann compat_ulong_t msg_stime; 21926293b31SArnd Bergmann compat_ulong_t msg_stime_high; 22026293b31SArnd Bergmann compat_ulong_t msg_rtime; 22126293b31SArnd Bergmann compat_ulong_t msg_rtime_high; 22226293b31SArnd Bergmann compat_ulong_t msg_ctime; 22326293b31SArnd Bergmann compat_ulong_t msg_ctime_high; 224c6557e7fSMartin Schwidefsky compat_ulong_t msg_cbytes; 225c6557e7fSMartin Schwidefsky compat_ulong_t msg_qnum; 226c6557e7fSMartin Schwidefsky compat_ulong_t msg_qbytes; 227c6557e7fSMartin Schwidefsky compat_pid_t msg_lspid; 228c6557e7fSMartin Schwidefsky compat_pid_t msg_lrpid; 229c6557e7fSMartin Schwidefsky compat_ulong_t __unused1; 230c6557e7fSMartin Schwidefsky compat_ulong_t __unused2; 231c6557e7fSMartin Schwidefsky }; 232c6557e7fSMartin Schwidefsky 233c6557e7fSMartin Schwidefsky struct compat_shmid64_ds { 234c6557e7fSMartin Schwidefsky struct compat_ipc64_perm shm_perm; 235c6557e7fSMartin Schwidefsky compat_size_t shm_segsz; 23626293b31SArnd Bergmann compat_ulong_t shm_atime; 23726293b31SArnd Bergmann compat_ulong_t shm_atime_high; 23826293b31SArnd Bergmann compat_ulong_t shm_dtime; 23926293b31SArnd Bergmann compat_ulong_t shm_dtime_high; 24026293b31SArnd Bergmann compat_ulong_t shm_ctime; 24126293b31SArnd Bergmann compat_ulong_t shm_ctime_high; 242c6557e7fSMartin Schwidefsky compat_pid_t shm_cpid; 243c6557e7fSMartin Schwidefsky compat_pid_t shm_lpid; 244c6557e7fSMartin Schwidefsky compat_ulong_t shm_nattch; 245c6557e7fSMartin Schwidefsky compat_ulong_t __unused1; 246c6557e7fSMartin Schwidefsky compat_ulong_t __unused2; 247c6557e7fSMartin Schwidefsky }; 248c6557e7fSMartin Schwidefsky #endif /* _ASM_S390X_COMPAT_H */ 249