diff options
Diffstat (limited to 'include/linux/compat.h')
| -rw-r--r-- | include/linux/compat.h | 599 |
1 files changed, 599 insertions, 0 deletions
diff --git a/include/linux/compat.h b/include/linux/compat.h new file mode 100644 index 00000000..5d46217f --- /dev/null +++ b/include/linux/compat.h @@ -0,0 +1,599 @@ +#ifndef _LINUX_COMPAT_H +#define _LINUX_COMPAT_H +/* + * These are the type definitions for the architecture specific + * syscall compatibility layer. + */ + +#ifdef CONFIG_COMPAT + +#include <linux/stat.h> +#include <linux/param.h> /* for HZ */ +#include <linux/sem.h> +#include <linux/socket.h> +#include <linux/if.h> +#include <linux/fs.h> +#include <linux/aio_abi.h> /* for aio_context_t */ + +#include <asm/compat.h> +#include <asm/siginfo.h> +#include <asm/signal.h> + +#ifndef COMPAT_USE_64BIT_TIME +#define COMPAT_USE_64BIT_TIME 0 +#endif + +#define compat_jiffies_to_clock_t(x) \ + (((unsigned long)(x) * COMPAT_USER_HZ) / HZ) + +typedef __compat_uid32_t compat_uid_t; +typedef __compat_gid32_t compat_gid_t; + +struct compat_sel_arg_struct; +struct rusage; + +struct compat_itimerspec { + struct compat_timespec it_interval; + struct compat_timespec it_value; +}; + +struct compat_utimbuf { + compat_time_t actime; + compat_time_t modtime; +}; + +struct compat_itimerval { + struct compat_timeval it_interval; + struct compat_timeval it_value; +}; + +struct compat_tms { + compat_clock_t tms_utime; + compat_clock_t tms_stime; + compat_clock_t tms_cutime; + compat_clock_t tms_cstime; +}; + +struct compat_timex { + compat_uint_t modes; + compat_long_t offset; + compat_long_t freq; + compat_long_t maxerror; + compat_long_t esterror; + compat_int_t status; + compat_long_t constant; + compat_long_t precision; + compat_long_t tolerance; + struct compat_timeval time; + compat_long_t tick; + compat_long_t ppsfreq; + compat_long_t jitter; + compat_int_t shift; + compat_long_t stabil; + compat_long_t jitcnt; + compat_long_t calcnt; + compat_long_t errcnt; + compat_long_t stbcnt; + compat_int_t tai; + + compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32; + compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32; + compat_int_t:32; compat_int_t:32; compat_int_t:32; +}; + +#define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW) + +typedef struct { + compat_sigset_word sig[_COMPAT_NSIG_WORDS]; +} compat_sigset_t; + +/* + * These functions operate strictly on struct compat_time* + */ +extern int get_compat_timespec(struct timespec *, + const struct compat_timespec __user *); +extern int put_compat_timespec(const struct timespec *, + struct compat_timespec __user *); +extern int get_compat_timeval(struct timeval *, + const struct compat_timeval __user *); +extern int put_compat_timeval(const struct timeval *, + struct compat_timeval __user *); +/* + * These functions operate on 32- or 64-bit specs depending on + * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments and the + * naming as compat_get/put_ rather than get/put_compat_. + */ +extern int compat_get_timespec(struct timespec *, const void __user *); +extern int compat_put_timespec(const struct timespec *, void __user *); +extern int compat_get_timeval(struct timeval *, const void __user *); +extern int compat_put_timeval(const struct timeval *, void __user *); + +struct compat_iovec { + compat_uptr_t iov_base; + compat_size_t iov_len; +}; + +struct compat_rlimit { + compat_ulong_t rlim_cur; + compat_ulong_t rlim_max; +}; + +struct compat_rusage { + struct compat_timeval ru_utime; + struct compat_timeval ru_stime; + compat_long_t ru_maxrss; + compat_long_t ru_ixrss; + compat_long_t ru_idrss; + compat_long_t ru_isrss; + compat_long_t ru_minflt; + compat_long_t ru_majflt; + compat_long_t ru_nswap; + compat_long_t ru_inblock; + compat_long_t ru_oublock; + compat_long_t ru_msgsnd; + compat_long_t ru_msgrcv; + compat_long_t ru_nsignals; + compat_long_t ru_nvcsw; + compat_long_t ru_nivcsw; +}; + +extern int put_compat_rusage(const struct rusage *, + struct compat_rusage __user *); + +struct compat_siginfo; + +extern asmlinkage long compat_sys_waitid(int, compat_pid_t, + struct compat_siginfo __user *, int, + struct compat_rusage __user *); + +struct compat_dirent { + u32 d_ino; + compat_off_t d_off; + u16 d_reclen; + char d_name[256]; +}; + +struct compat_ustat { + compat_daddr_t f_tfree; + compat_ino_t f_tinode; + char f_fname[6]; + char f_fpack[6]; +}; + +typedef union compat_sigval { + compat_int_t sival_int; + compat_uptr_t sival_ptr; +} compat_sigval_t; + +#define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3) + +typedef struct compat_sigevent { + compat_sigval_t sigev_value; + compat_int_t sigev_signo; + compat_int_t sigev_notify; + union { + compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE]; + compat_int_t _tid; + + struct { + compat_uptr_t _function; + compat_uptr_t _attribute; + } _sigev_thread; + } _sigev_un; +} compat_sigevent_t; + +struct compat_ifmap { + compat_ulong_t mem_start; + compat_ulong_t mem_end; + unsigned short base_addr; + unsigned char irq; + unsigned char dma; + unsigned char port; +}; + +struct compat_if_settings { + unsigned int type; /* Type of physical device or protocol */ + unsigned int size; /* Size of the data allocated by the caller */ + compat_uptr_t ifs_ifsu; /* union of pointers */ +}; + +struct compat_ifreq { + union { + char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */ + } ifr_ifrn; + union { + struct sockaddr ifru_addr; + struct sockaddr ifru_dstaddr; + struct sockaddr ifru_broadaddr; + struct sockaddr ifru_netmask; + struct sockaddr ifru_hwaddr; + short ifru_flags; + compat_int_t ifru_ivalue; + compat_int_t ifru_mtu; + struct compat_ifmap ifru_map; + char ifru_slave[IFNAMSIZ]; /* Just fits the size */ + char ifru_newname[IFNAMSIZ]; + compat_caddr_t ifru_data; + struct compat_if_settings ifru_settings; + } ifr_ifru; +}; + +struct compat_ifconf { + compat_int_t ifc_len; /* size of buffer */ + compat_caddr_t ifcbuf; +}; + +struct compat_robust_list { + compat_uptr_t next; +}; + +struct compat_robust_list_head { + struct compat_robust_list list; + compat_long_t futex_offset; + compat_uptr_t list_op_pending; +}; + +struct compat_statfs; +struct compat_statfs64; +struct compat_old_linux_dirent; +struct compat_linux_dirent; +struct linux_dirent64; +struct compat_msghdr; +struct compat_mmsghdr; +struct compat_sysinfo; +struct compat_sysctl_args; +struct compat_kexec_segment; +struct compat_mq_attr; +struct compat_msgbuf; + +extern void compat_exit_robust_list(struct task_struct *curr); + +asmlinkage long +compat_sys_set_robust_list(struct compat_robust_list_head __user *head, + compat_size_t len); +asmlinkage long +compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, + compat_size_t __user *len_ptr); + +#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC +long compat_sys_semctl(int first, int second, int third, void __user *uptr); +long compat_sys_msgsnd(int first, int second, int third, void __user *uptr); +long compat_sys_msgrcv(int first, int second, int msgtyp, int third, + int version, void __user *uptr); +long compat_sys_shmat(int first, int second, compat_uptr_t third, int version, + void __user *uptr); +#else +long compat_sys_semctl(int semid, int semnum, int cmd, int arg); +long compat_sys_msgsnd(int msqid, struct compat_msgbuf __user *msgp, + size_t msgsz, int msgflg); +long compat_sys_msgrcv(int msqid, struct compat_msgbuf __user *msgp, + size_t msgsz, long msgtyp, int msgflg); +long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg); +#endif +long compat_sys_msgctl(int first, int second, void __user *uptr); +long compat_sys_shmctl(int first, int second, void __user *uptr); +long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, + unsigned nsems, const struct compat_timespec __user *timeout); +asmlinkage long compat_sys_keyctl(u32 option, + u32 arg2, u32 arg3, u32 arg4, u32 arg5); +asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); + +asmlinkage ssize_t compat_sys_readv(unsigned long fd, + const struct compat_iovec __user *vec, unsigned long vlen); +asmlinkage ssize_t compat_sys_writev(unsigned long fd, + const struct compat_iovec __user *vec, unsigned long vlen); +asmlinkage ssize_t compat_sys_preadv(unsigned long fd, + const struct compat_iovec __user *vec, + unsigned long vlen, u32 pos_low, u32 pos_high); +asmlinkage ssize_t compat_sys_pwritev(unsigned long fd, + const struct compat_iovec __user *vec, + unsigned long vlen, u32 pos_low, u32 pos_high); + +int compat_do_execve(char *filename, compat_uptr_t __user *argv, + compat_uptr_t __user *envp, struct pt_regs *regs); + +asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, + compat_ulong_t __user *outp, compat_ulong_t __user *exp, + struct compat_timeval __user *tvp); + +asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg); + +asmlinkage long compat_sys_wait4(compat_pid_t pid, + compat_uint_t __user *stat_addr, int options, + struct compat_rusage __user *ru); + +#define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t)) + +#define BITS_TO_COMPAT_LONGS(bits) \ + (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG) + +long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, + unsigned long bitmap_size); +long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, + unsigned long bitmap_size); +int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from); +int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from); +int get_compat_sigevent(struct sigevent *event, + const struct compat_sigevent __user *u_event); +long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig, + struct compat_siginfo __user *uinfo); + +static inline int compat_timeval_compare(struct compat_timeval *lhs, + struct compat_timeval *rhs) +{ + if (lhs->tv_sec < rhs->tv_sec) + return -1; + if (lhs->tv_sec > rhs->tv_sec) + return 1; + return lhs->tv_usec - rhs->tv_usec; +} + +static inline int compat_timespec_compare(struct compat_timespec *lhs, + struct compat_timespec *rhs) +{ + if (lhs->tv_sec < rhs->tv_sec) + return -1; + if (lhs->tv_sec > rhs->tv_sec) + return 1; + return lhs->tv_nsec - rhs->tv_nsec; +} + +extern int get_compat_itimerspec(struct itimerspec *dst, + const struct compat_itimerspec __user *src); +extern int put_compat_itimerspec(struct compat_itimerspec __user *dst, + const struct itimerspec *src); + +asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, + struct timezone __user *tz); +asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, + struct timezone __user *tz); + +asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp); + +extern int compat_printk(const char *fmt, ...); +extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat); + +asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, + compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, + const compat_ulong_t __user *new_nodes); + +extern int compat_ptrace_request(struct task_struct *child, + compat_long_t request, + compat_ulong_t addr, compat_ulong_t data); + +extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, + compat_ulong_t addr, compat_ulong_t data); +asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, + compat_long_t addr, compat_long_t data); + +/* + * epoll (fs/eventpoll.c) compat bits follow ... + */ +struct epoll_event; +#define compat_epoll_event epoll_event +asmlinkage long compat_sys_epoll_pwait(int epfd, + struct compat_epoll_event __user *events, + int maxevents, int timeout, + const compat_sigset_t __user *sigmask, + compat_size_t sigsetsize); + +asmlinkage long compat_sys_utime(const char __user *filename, + struct compat_utimbuf __user *t); +asmlinkage long compat_sys_utimensat(unsigned int dfd, + const char __user *filename, + struct compat_timespec __user *t, + int flags); + +asmlinkage long compat_sys_time(compat_time_t __user *tloc); +asmlinkage long compat_sys_stime(compat_time_t __user *tptr); +asmlinkage long compat_sys_signalfd(int ufd, + const compat_sigset_t __user *sigmask, + compat_size_t sigsetsize); +asmlinkage long compat_sys_timerfd_settime(int ufd, int flags, + const struct compat_itimerspec __user *utmr, + struct compat_itimerspec __user *otmr); +asmlinkage long compat_sys_timerfd_gettime(int ufd, + struct compat_itimerspec __user *otmr); + +asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page, + __u32 __user *pages, + const int __user *nodes, + int __user *status, + int flags); +asmlinkage long compat_sys_futimesat(unsigned int dfd, + const char __user *filename, + struct compat_timeval __user *t); +asmlinkage long compat_sys_utimes(const char __user *filename, + struct compat_timeval __user *t); +asmlinkage long compat_sys_newstat(const char __user *filename, + struct compat_stat __user *statbuf); +asmlinkage long compat_sys_newlstat(const char __user *filename, + struct compat_stat __user *statbuf); +asmlinkage long compat_sys_newfstatat(unsigned int dfd, + const char __user *filename, + struct compat_stat __user *statbuf, + int flag); +asmlinkage long compat_sys_newfstat(unsigned int fd, + struct compat_stat __user *statbuf); +asmlinkage long compat_sys_statfs(const char __user *pathname, + struct compat_statfs __user *buf); +asmlinkage long compat_sys_fstatfs(unsigned int fd, + struct compat_statfs __user *buf); +asmlinkage long compat_sys_statfs64(const char __user *pathname, + compat_size_t sz, + struct compat_statfs64 __user *buf); +asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, + struct compat_statfs64 __user *buf); +asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, + unsigned long arg); +asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd, + unsigned long arg); +asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p); +asmlinkage long compat_sys_io_getevents(aio_context_t ctx_id, + unsigned long min_nr, + unsigned long nr, + struct io_event __user *events, + struct compat_timespec __user *timeout); +asmlinkage long compat_sys_io_submit(aio_context_t ctx_id, int nr, + u32 __user *iocb); +asmlinkage long compat_sys_mount(const char __user *dev_name, + const char __user *dir_name, + const char __user *type, unsigned long flags, + const void __user *data); +asmlinkage long compat_sys_old_readdir(unsigned int fd, + struct compat_old_linux_dirent __user *, + unsigned int count); +asmlinkage long compat_sys_getdents(unsigned int fd, + struct compat_linux_dirent __user *dirent, + unsigned int count); +asmlinkage long compat_sys_getdents64(unsigned int fd, + struct linux_dirent64 __user *dirent, + unsigned int count); +asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *, + unsigned int nr_segs, unsigned int flags); +asmlinkage long compat_sys_open(const char __user *filename, int flags, + umode_t mode); +asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename, + int flags, umode_t mode); +asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, + struct file_handle __user *handle, + int flags); +asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp, + compat_ulong_t __user *outp, + compat_ulong_t __user *exp, + struct compat_timespec __user *tsp, + void __user *sig); +asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds, + unsigned int nfds, + struct compat_timespec __user *tsp, + const compat_sigset_t __user *sigmask, + compat_size_t sigsetsize); +asmlinkage long compat_sys_signalfd4(int ufd, + const compat_sigset_t __user *sigmask, + compat_size_t sigsetsize, int flags); +asmlinkage long compat_sys_get_mempolicy(int __user *policy, + compat_ulong_t __user *nmask, + compat_ulong_t maxnode, + compat_ulong_t addr, + compat_ulong_t flags); +asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask, + compat_ulong_t maxnode); +asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len, + compat_ulong_t mode, + compat_ulong_t __user *nmask, + compat_ulong_t maxnode, compat_ulong_t flags); + +asmlinkage long compat_sys_setsockopt(int fd, int level, int optname, + char __user *optval, unsigned int optlen); +asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, + unsigned flags); +asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg, + unsigned vlen, unsigned int flags); +asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, + unsigned int flags); +asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len, + unsigned flags); +asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len, + unsigned flags, struct sockaddr __user *addr, + int __user *addrlen); +asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, + unsigned vlen, unsigned int flags, + struct compat_timespec __user *timeout); +asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp, + struct compat_timespec __user *rmtp); +asmlinkage long compat_sys_getitimer(int which, + struct compat_itimerval __user *it); +asmlinkage long compat_sys_setitimer(int which, + struct compat_itimerval __user *in, + struct compat_itimerval __user *out); +asmlinkage long compat_sys_times(struct compat_tms __user *tbuf); +asmlinkage long compat_sys_setrlimit(unsigned int resource, + struct compat_rlimit __user *rlim); +asmlinkage long compat_sys_getrlimit(unsigned int resource, + struct compat_rlimit __user *rlim); +asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru); +asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, + unsigned int len, + compat_ulong_t __user *user_mask_ptr); +asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, + unsigned int len, + compat_ulong_t __user *user_mask_ptr); +asmlinkage long compat_sys_timer_create(clockid_t which_clock, + struct compat_sigevent __user *timer_event_spec, + timer_t __user *created_timer_id); +asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags, + struct compat_itimerspec __user *new, + struct compat_itimerspec __user *old); +asmlinkage long compat_sys_timer_gettime(timer_t timer_id, + struct compat_itimerspec __user *setting); +asmlinkage long compat_sys_clock_settime(clockid_t which_clock, + struct compat_timespec __user *tp); +asmlinkage long compat_sys_clock_gettime(clockid_t which_clock, + struct compat_timespec __user *tp); +asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock, + struct compat_timex __user *tp); +asmlinkage long compat_sys_clock_getres(clockid_t which_clock, + struct compat_timespec __user *tp); +asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags, + struct compat_timespec __user *rqtp, + struct compat_timespec __user *rmtp); +asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese, + struct compat_siginfo __user *uinfo, + struct compat_timespec __user *uts, compat_size_t sigsetsize); +asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, + compat_size_t sigsetsize); +asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); +asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, + unsigned long arg); +asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val, + struct compat_timespec __user *utime, u32 __user *uaddr2, + u32 val3); +asmlinkage long compat_sys_getsockopt(int fd, int level, int optname, + char __user *optval, int __user *optlen); +asmlinkage long compat_sys_kexec_load(unsigned long entry, + unsigned long nr_segments, + struct compat_kexec_segment __user *, + unsigned long flags); +asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, + const struct compat_mq_attr __user *u_mqstat, + struct compat_mq_attr __user *u_omqstat); +asmlinkage long compat_sys_mq_notify(mqd_t mqdes, + const struct compat_sigevent __user *u_notification); +asmlinkage long compat_sys_mq_open(const char __user *u_name, + int oflag, compat_mode_t mode, + struct compat_mq_attr __user *u_attr); +asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes, + const char __user *u_msg_ptr, + size_t msg_len, unsigned int msg_prio, + const struct compat_timespec __user *u_abs_timeout); +asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes, + char __user *u_msg_ptr, + size_t msg_len, unsigned int __user *u_msg_prio, + const struct compat_timespec __user *u_abs_timeout); +asmlinkage long compat_sys_socketcall(int call, u32 __user *args); +asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args); + +extern ssize_t compat_rw_copy_check_uvector(int type, + const struct compat_iovec __user *uvector, + unsigned long nr_segs, + unsigned long fast_segs, struct iovec *fast_pointer, + struct iovec **ret_pointer, + int check_access); + +extern void __user *compat_alloc_user_space(unsigned long len); + +asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid, + const struct compat_iovec __user *lvec, + unsigned long liovcnt, const struct compat_iovec __user *rvec, + unsigned long riovcnt, unsigned long flags); +asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid, + const struct compat_iovec __user *lvec, + unsigned long liovcnt, const struct compat_iovec __user *rvec, + unsigned long riovcnt, unsigned long flags); + +#else + +#define is_compat_task() (0) + +#endif /* CONFIG_COMPAT */ +#endif /* _LINUX_COMPAT_H */ |