11965aae3SH. Peter Anvin #ifndef _ASM_X86_COMPAT_H 21965aae3SH. Peter Anvin #define _ASM_X86_COMPAT_H 3bb898558SAl Viro 4bb898558SAl Viro /* 5bb898558SAl Viro * Architecture specific compatibility types 6bb898558SAl Viro */ 7bb898558SAl Viro #include <linux/types.h> 8bb898558SAl Viro #include <linux/sched.h> 9bb898558SAl Viro #include <asm/user32.h> 10bb898558SAl Viro 11bb898558SAl Viro #define COMPAT_USER_HZ 100 12e28cbf22SChristoph Hellwig #define COMPAT_UTS_MACHINE "i686\0\0" 13bb898558SAl Viro 14bb898558SAl Viro typedef u32 compat_size_t; 15bb898558SAl Viro typedef s32 compat_ssize_t; 16bb898558SAl Viro typedef s32 compat_time_t; 17bb898558SAl Viro typedef s32 compat_clock_t; 18bb898558SAl Viro typedef s32 compat_pid_t; 19bb898558SAl Viro typedef u16 __compat_uid_t; 20bb898558SAl Viro typedef u16 __compat_gid_t; 21bb898558SAl Viro typedef u32 __compat_uid32_t; 22bb898558SAl Viro typedef u32 __compat_gid32_t; 23bb898558SAl Viro typedef u16 compat_mode_t; 24bb898558SAl Viro typedef u32 compat_ino_t; 25bb898558SAl Viro typedef u16 compat_dev_t; 26bb898558SAl Viro typedef s32 compat_off_t; 27bb898558SAl Viro typedef s64 compat_loff_t; 28bb898558SAl Viro typedef u16 compat_nlink_t; 29bb898558SAl Viro typedef u16 compat_ipc_pid_t; 30bb898558SAl Viro typedef s32 compat_daddr_t; 31bb898558SAl Viro typedef u32 compat_caddr_t; 32bb898558SAl Viro typedef __kernel_fsid_t compat_fsid_t; 33bb898558SAl Viro typedef s32 compat_timer_t; 34bb898558SAl Viro typedef s32 compat_key_t; 35bb898558SAl Viro 36bb898558SAl Viro typedef s32 compat_int_t; 37bb898558SAl Viro typedef s32 compat_long_t; 38bb898558SAl Viro typedef s64 __attribute__((aligned(4))) compat_s64; 39bb898558SAl Viro typedef u32 compat_uint_t; 40bb898558SAl Viro typedef u32 compat_ulong_t; 41bb898558SAl Viro typedef u64 __attribute__((aligned(4))) compat_u64; 42bb898558SAl Viro 43bb898558SAl Viro struct compat_timespec { 44bb898558SAl Viro compat_time_t tv_sec; 45bb898558SAl Viro s32 tv_nsec; 46bb898558SAl Viro }; 47bb898558SAl Viro 48bb898558SAl Viro struct compat_timeval { 49bb898558SAl Viro compat_time_t tv_sec; 50bb898558SAl Viro s32 tv_usec; 51bb898558SAl Viro }; 52bb898558SAl Viro 53bb898558SAl Viro struct compat_stat { 54bb898558SAl Viro compat_dev_t st_dev; 55bb898558SAl Viro u16 __pad1; 56bb898558SAl Viro compat_ino_t st_ino; 57bb898558SAl Viro compat_mode_t st_mode; 58bb898558SAl Viro compat_nlink_t st_nlink; 59bb898558SAl Viro __compat_uid_t st_uid; 60bb898558SAl Viro __compat_gid_t st_gid; 61bb898558SAl Viro compat_dev_t st_rdev; 62bb898558SAl Viro u16 __pad2; 63bb898558SAl Viro u32 st_size; 64bb898558SAl Viro u32 st_blksize; 65bb898558SAl Viro u32 st_blocks; 66bb898558SAl Viro u32 st_atime; 67bb898558SAl Viro u32 st_atime_nsec; 68bb898558SAl Viro u32 st_mtime; 69bb898558SAl Viro u32 st_mtime_nsec; 70bb898558SAl Viro u32 st_ctime; 71bb898558SAl Viro u32 st_ctime_nsec; 72bb898558SAl Viro u32 __unused4; 73bb898558SAl Viro u32 __unused5; 74bb898558SAl Viro }; 75bb898558SAl Viro 76bb898558SAl Viro struct compat_flock { 77bb898558SAl Viro short l_type; 78bb898558SAl Viro short l_whence; 79bb898558SAl Viro compat_off_t l_start; 80bb898558SAl Viro compat_off_t l_len; 81bb898558SAl Viro compat_pid_t l_pid; 82bb898558SAl Viro }; 83bb898558SAl Viro 84bb898558SAl Viro #define F_GETLK64 12 /* using 'struct flock64' */ 85bb898558SAl Viro #define F_SETLK64 13 86bb898558SAl Viro #define F_SETLKW64 14 87bb898558SAl Viro 88bb898558SAl Viro /* 89bb898558SAl Viro * IA32 uses 4 byte alignment for 64 bit quantities, 90bb898558SAl Viro * so we need to pack this structure. 91bb898558SAl Viro */ 92bb898558SAl Viro struct compat_flock64 { 93bb898558SAl Viro short l_type; 94bb898558SAl Viro short l_whence; 95bb898558SAl Viro compat_loff_t l_start; 96bb898558SAl Viro compat_loff_t l_len; 97bb898558SAl Viro compat_pid_t l_pid; 98bb898558SAl Viro } __attribute__((packed)); 99bb898558SAl Viro 100bb898558SAl Viro struct compat_statfs { 101bb898558SAl Viro int f_type; 102bb898558SAl Viro int f_bsize; 103bb898558SAl Viro int f_blocks; 104bb898558SAl Viro int f_bfree; 105bb898558SAl Viro int f_bavail; 106bb898558SAl Viro int f_files; 107bb898558SAl Viro int f_ffree; 108bb898558SAl Viro compat_fsid_t f_fsid; 109bb898558SAl Viro int f_namelen; /* SunOS ignores this field. */ 110bb898558SAl Viro int f_frsize; 1111448c721SEric W. Biederman int f_flags; 1121448c721SEric W. Biederman int f_spare[4]; 113bb898558SAl Viro }; 114bb898558SAl Viro 115bb898558SAl Viro #define COMPAT_RLIM_OLD_INFINITY 0x7fffffff 116bb898558SAl Viro #define COMPAT_RLIM_INFINITY 0xffffffff 117bb898558SAl Viro 118bb898558SAl Viro typedef u32 compat_old_sigset_t; /* at least 32 bits */ 119bb898558SAl Viro 120bb898558SAl Viro #define _COMPAT_NSIG 64 121bb898558SAl Viro #define _COMPAT_NSIG_BPW 32 122bb898558SAl Viro 123bb898558SAl Viro typedef u32 compat_sigset_word; 124bb898558SAl Viro 125bb898558SAl Viro #define COMPAT_OFF_T_MAX 0x7fffffff 126bb898558SAl Viro #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL 127bb898558SAl Viro 128bb898558SAl Viro struct compat_ipc64_perm { 129bb898558SAl Viro compat_key_t key; 130bb898558SAl Viro __compat_uid32_t uid; 131bb898558SAl Viro __compat_gid32_t gid; 132bb898558SAl Viro __compat_uid32_t cuid; 133bb898558SAl Viro __compat_gid32_t cgid; 134bb898558SAl Viro unsigned short mode; 135bb898558SAl Viro unsigned short __pad1; 136bb898558SAl Viro unsigned short seq; 137bb898558SAl Viro unsigned short __pad2; 138bb898558SAl Viro compat_ulong_t unused1; 139bb898558SAl Viro compat_ulong_t unused2; 140bb898558SAl Viro }; 141bb898558SAl Viro 142bb898558SAl Viro struct compat_semid64_ds { 143bb898558SAl Viro struct compat_ipc64_perm sem_perm; 144bb898558SAl Viro compat_time_t sem_otime; 145bb898558SAl Viro compat_ulong_t __unused1; 146bb898558SAl Viro compat_time_t sem_ctime; 147bb898558SAl Viro compat_ulong_t __unused2; 148bb898558SAl Viro compat_ulong_t sem_nsems; 149bb898558SAl Viro compat_ulong_t __unused3; 150bb898558SAl Viro compat_ulong_t __unused4; 151bb898558SAl Viro }; 152bb898558SAl Viro 153bb898558SAl Viro struct compat_msqid64_ds { 154bb898558SAl Viro struct compat_ipc64_perm msg_perm; 155bb898558SAl Viro compat_time_t msg_stime; 156bb898558SAl Viro compat_ulong_t __unused1; 157bb898558SAl Viro compat_time_t msg_rtime; 158bb898558SAl Viro compat_ulong_t __unused2; 159bb898558SAl Viro compat_time_t msg_ctime; 160bb898558SAl Viro compat_ulong_t __unused3; 161bb898558SAl Viro compat_ulong_t msg_cbytes; 162bb898558SAl Viro compat_ulong_t msg_qnum; 163bb898558SAl Viro compat_ulong_t msg_qbytes; 164bb898558SAl Viro compat_pid_t msg_lspid; 165bb898558SAl Viro compat_pid_t msg_lrpid; 166bb898558SAl Viro compat_ulong_t __unused4; 167bb898558SAl Viro compat_ulong_t __unused5; 168bb898558SAl Viro }; 169bb898558SAl Viro 170bb898558SAl Viro struct compat_shmid64_ds { 171bb898558SAl Viro struct compat_ipc64_perm shm_perm; 172bb898558SAl Viro compat_size_t shm_segsz; 173bb898558SAl Viro compat_time_t shm_atime; 174bb898558SAl Viro compat_ulong_t __unused1; 175bb898558SAl Viro compat_time_t shm_dtime; 176bb898558SAl Viro compat_ulong_t __unused2; 177bb898558SAl Viro compat_time_t shm_ctime; 178bb898558SAl Viro compat_ulong_t __unused3; 179bb898558SAl Viro compat_pid_t shm_cpid; 180bb898558SAl Viro compat_pid_t shm_lpid; 181bb898558SAl Viro compat_ulong_t shm_nattch; 182bb898558SAl Viro compat_ulong_t __unused4; 183bb898558SAl Viro compat_ulong_t __unused5; 184bb898558SAl Viro }; 185bb898558SAl Viro 186bb898558SAl Viro /* 187bb898558SAl Viro * The type of struct elf_prstatus.pr_reg in compatible core dumps. 188bb898558SAl Viro */ 189bb898558SAl Viro typedef struct user_regs_struct32 compat_elf_gregset_t; 190bb898558SAl Viro 191bb898558SAl Viro /* 192bb898558SAl Viro * A pointer passed in from user mode. This should not 193bb898558SAl Viro * be used for syscall parameters, just declare them 194bb898558SAl Viro * as pointers because the syscall entry code will have 195bb898558SAl Viro * appropriately converted them already. 196bb898558SAl Viro */ 197bb898558SAl Viro typedef u32 compat_uptr_t; 198bb898558SAl Viro 199bb898558SAl Viro static inline void __user *compat_ptr(compat_uptr_t uptr) 200bb898558SAl Viro { 201bb898558SAl Viro return (void __user *)(unsigned long)uptr; 202bb898558SAl Viro } 203bb898558SAl Viro 204bb898558SAl Viro static inline compat_uptr_t ptr_to_compat(void __user *uptr) 205bb898558SAl Viro { 206bb898558SAl Viro return (u32)(unsigned long)uptr; 207bb898558SAl Viro } 208bb898558SAl Viro 209c41d68a5SH. Peter Anvin static inline void __user *arch_compat_alloc_user_space(long len) 210bb898558SAl Viro { 211bb898558SAl Viro struct pt_regs *regs = task_pt_regs(current); 212bb898558SAl Viro return (void __user *)regs->sp - len; 213bb898558SAl Viro } 214bb898558SAl Viro 215bb898558SAl Viro static inline int is_compat_task(void) 216bb898558SAl Viro { 217bb898558SAl Viro return current_thread_info()->status & TS_COMPAT; 218bb898558SAl Viro } 219bb898558SAl Viro 2201965aae3SH. Peter Anvin #endif /* _ASM_X86_COMPAT_H */ 221