986 lines
31 KiB
C
986 lines
31 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_COMPAT_H
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#define _LINUX_COMPAT_H
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/*
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* These are the type definitions for the architecture specific
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* syscall compatibility layer.
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*/
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#include <linux/types.h>
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#include <linux/time.h>
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#include <linux/stat.h>
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#include <linux/param.h> /* for HZ */
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#include <linux/sem.h>
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#include <linux/socket.h>
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#include <linux/if.h>
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#include <linux/fs.h>
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#include <linux/aio_abi.h> /* for aio_context_t */
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#include <linux/uaccess.h>
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#include <linux/unistd.h>
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#include <asm/compat.h>
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#include <asm/siginfo.h>
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#include <asm/signal.h>
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#ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
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/*
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* It may be useful for an architecture to override the definitions of the
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* COMPAT_SYSCALL_DEFINE0 and COMPAT_SYSCALL_DEFINEx() macros, in particular
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* to use a different calling convention for syscalls. To allow for that,
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+ the prototypes for the compat_sys_*() functions below will *not* be included
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* if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled.
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*/
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#include <asm/syscall_wrapper.h>
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#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
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#ifndef COMPAT_USE_64BIT_TIME
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#define COMPAT_USE_64BIT_TIME 0
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#endif
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#ifndef __SC_DELOUSE
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#define __SC_DELOUSE(t,v) ((__force t)(unsigned long)(v))
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#endif
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#ifndef COMPAT_SYSCALL_DEFINE0
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#define COMPAT_SYSCALL_DEFINE0(name) \
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asmlinkage long compat_sys_##name(void); \
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ALLOW_ERROR_INJECTION(compat_sys_##name, ERRNO); \
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asmlinkage long compat_sys_##name(void)
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#endif /* COMPAT_SYSCALL_DEFINE0 */
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#define COMPAT_SYSCALL_DEFINE1(name, ...) \
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COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
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#define COMPAT_SYSCALL_DEFINE2(name, ...) \
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COMPAT_SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
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#define COMPAT_SYSCALL_DEFINE3(name, ...) \
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COMPAT_SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
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#define COMPAT_SYSCALL_DEFINE4(name, ...) \
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COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
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#define COMPAT_SYSCALL_DEFINE5(name, ...) \
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COMPAT_SYSCALL_DEFINEx(5, _##name, __VA_ARGS__)
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#define COMPAT_SYSCALL_DEFINE6(name, ...) \
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COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
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/*
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* The asmlinkage stub is aliased to a function named __se_compat_sys_*() which
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* sign-extends 32-bit ints to longs whenever needed. The actual work is
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* done within __do_compat_sys_*().
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*/
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#ifndef COMPAT_SYSCALL_DEFINEx
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#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \
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__diag_push(); \
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__diag_ignore(GCC, 8, "-Wattribute-alias", \
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"Type aliasing is used to sanitize syscall arguments");\
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asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
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__attribute__((alias(__stringify(__se_compat_sys##name)))); \
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ALLOW_ERROR_INJECTION(compat_sys##name, ERRNO); \
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static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
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asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
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asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
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{ \
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long ret = __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));\
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__MAP(x,__SC_TEST,__VA_ARGS__); \
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return ret; \
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} \
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__diag_pop(); \
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static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
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#endif /* COMPAT_SYSCALL_DEFINEx */
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struct compat_iovec {
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compat_uptr_t iov_base;
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compat_size_t iov_len;
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};
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#ifndef compat_user_stack_pointer
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#define compat_user_stack_pointer() current_user_stack_pointer()
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#endif
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#ifndef compat_sigaltstack /* we'll need that for MIPS */
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typedef struct compat_sigaltstack {
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compat_uptr_t ss_sp;
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int ss_flags;
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compat_size_t ss_size;
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} compat_stack_t;
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#endif
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#ifndef COMPAT_MINSIGSTKSZ
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#define COMPAT_MINSIGSTKSZ MINSIGSTKSZ
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#endif
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#define compat_jiffies_to_clock_t(x) \
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(((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
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typedef __compat_uid32_t compat_uid_t;
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typedef __compat_gid32_t compat_gid_t;
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struct compat_sel_arg_struct;
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struct rusage;
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struct old_itimerval32;
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struct compat_tms {
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compat_clock_t tms_utime;
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compat_clock_t tms_stime;
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compat_clock_t tms_cutime;
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compat_clock_t tms_cstime;
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};
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#define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
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#ifndef compat_sigset_t
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typedef struct {
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compat_sigset_word sig[_COMPAT_NSIG_WORDS];
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} compat_sigset_t;
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#endif
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int set_compat_user_sigmask(const compat_sigset_t __user *umask,
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size_t sigsetsize);
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struct compat_sigaction {
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#ifndef __ARCH_HAS_IRIX_SIGACTION
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compat_uptr_t sa_handler;
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compat_ulong_t sa_flags;
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#else
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compat_uint_t sa_flags;
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compat_uptr_t sa_handler;
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#endif
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#ifdef __ARCH_HAS_SA_RESTORER
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compat_uptr_t sa_restorer;
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#endif
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compat_sigset_t sa_mask __packed;
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};
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typedef union compat_sigval {
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compat_int_t sival_int;
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compat_uptr_t sival_ptr;
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} compat_sigval_t;
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typedef struct compat_siginfo {
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int si_signo;
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#ifndef __ARCH_HAS_SWAPPED_SIGINFO
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int si_errno;
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int si_code;
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#else
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int si_code;
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int si_errno;
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#endif
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union {
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int _pad[128/sizeof(int) - 3];
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/* kill() */
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struct {
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compat_pid_t _pid; /* sender's pid */
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__compat_uid32_t _uid; /* sender's uid */
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} _kill;
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/* POSIX.1b timers */
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struct {
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compat_timer_t _tid; /* timer id */
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int _overrun; /* overrun count */
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compat_sigval_t _sigval; /* same as below */
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} _timer;
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/* POSIX.1b signals */
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struct {
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compat_pid_t _pid; /* sender's pid */
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__compat_uid32_t _uid; /* sender's uid */
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compat_sigval_t _sigval;
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} _rt;
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/* SIGCHLD */
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struct {
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compat_pid_t _pid; /* which child */
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__compat_uid32_t _uid; /* sender's uid */
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int _status; /* exit code */
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compat_clock_t _utime;
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compat_clock_t _stime;
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} _sigchld;
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#ifdef CONFIG_X86_X32_ABI
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/* SIGCHLD (x32 version) */
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struct {
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compat_pid_t _pid; /* which child */
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__compat_uid32_t _uid; /* sender's uid */
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int _status; /* exit code */
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compat_s64 _utime;
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compat_s64 _stime;
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} _sigchld_x32;
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#endif
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/* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */
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struct {
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compat_uptr_t _addr; /* faulting insn/memory ref. */
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#define __COMPAT_ADDR_BND_PKEY_PAD (__alignof__(compat_uptr_t) < sizeof(short) ? \
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sizeof(short) : __alignof__(compat_uptr_t))
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union {
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/* used on alpha and sparc */
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int _trapno; /* TRAP # which caused the signal */
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/*
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* used when si_code=BUS_MCEERR_AR or
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* used when si_code=BUS_MCEERR_AO
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*/
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short int _addr_lsb; /* Valid LSB of the reported address. */
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/* used when si_code=SEGV_BNDERR */
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struct {
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char _dummy_bnd[__COMPAT_ADDR_BND_PKEY_PAD];
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compat_uptr_t _lower;
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compat_uptr_t _upper;
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} _addr_bnd;
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/* used when si_code=SEGV_PKUERR */
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struct {
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char _dummy_pkey[__COMPAT_ADDR_BND_PKEY_PAD];
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u32 _pkey;
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} _addr_pkey;
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/* used when si_code=TRAP_PERF */
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struct {
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compat_ulong_t _data;
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u32 _type;
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} _perf;
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};
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} _sigfault;
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/* SIGPOLL */
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struct {
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compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */
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int _fd;
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} _sigpoll;
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struct {
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compat_uptr_t _call_addr; /* calling user insn */
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int _syscall; /* triggering system call number */
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unsigned int _arch; /* AUDIT_ARCH_* of syscall */
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} _sigsys;
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} _sifields;
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} compat_siginfo_t;
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struct compat_rlimit {
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compat_ulong_t rlim_cur;
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compat_ulong_t rlim_max;
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};
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struct compat_rusage {
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struct old_timeval32 ru_utime;
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struct old_timeval32 ru_stime;
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compat_long_t ru_maxrss;
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compat_long_t ru_ixrss;
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compat_long_t ru_idrss;
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compat_long_t ru_isrss;
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compat_long_t ru_minflt;
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compat_long_t ru_majflt;
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compat_long_t ru_nswap;
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compat_long_t ru_inblock;
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compat_long_t ru_oublock;
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compat_long_t ru_msgsnd;
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compat_long_t ru_msgrcv;
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compat_long_t ru_nsignals;
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compat_long_t ru_nvcsw;
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compat_long_t ru_nivcsw;
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};
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extern int put_compat_rusage(const struct rusage *,
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struct compat_rusage __user *);
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struct compat_siginfo;
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struct __compat_aio_sigset;
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struct compat_dirent {
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u32 d_ino;
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compat_off_t d_off;
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u16 d_reclen;
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char d_name[256];
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};
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struct compat_ustat {
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compat_daddr_t f_tfree;
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compat_ino_t f_tinode;
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char f_fname[6];
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char f_fpack[6];
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};
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#define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
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typedef struct compat_sigevent {
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compat_sigval_t sigev_value;
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compat_int_t sigev_signo;
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compat_int_t sigev_notify;
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union {
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compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE];
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compat_int_t _tid;
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struct {
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compat_uptr_t _function;
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compat_uptr_t _attribute;
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} _sigev_thread;
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} _sigev_un;
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} compat_sigevent_t;
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struct compat_ifmap {
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compat_ulong_t mem_start;
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compat_ulong_t mem_end;
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unsigned short base_addr;
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unsigned char irq;
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unsigned char dma;
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unsigned char port;
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};
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struct compat_if_settings {
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unsigned int type; /* Type of physical device or protocol */
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unsigned int size; /* Size of the data allocated by the caller */
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compat_uptr_t ifs_ifsu; /* union of pointers */
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};
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struct compat_ifreq {
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union {
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char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */
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} ifr_ifrn;
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union {
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struct sockaddr ifru_addr;
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struct sockaddr ifru_dstaddr;
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struct sockaddr ifru_broadaddr;
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struct sockaddr ifru_netmask;
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struct sockaddr ifru_hwaddr;
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short ifru_flags;
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compat_int_t ifru_ivalue;
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compat_int_t ifru_mtu;
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struct compat_ifmap ifru_map;
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char ifru_slave[IFNAMSIZ]; /* Just fits the size */
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char ifru_newname[IFNAMSIZ];
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compat_caddr_t ifru_data;
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struct compat_if_settings ifru_settings;
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} ifr_ifru;
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};
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struct compat_ifconf {
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compat_int_t ifc_len; /* size of buffer */
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compat_caddr_t ifcbuf;
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};
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struct compat_robust_list {
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compat_uptr_t next;
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};
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struct compat_robust_list_head {
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struct compat_robust_list list;
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compat_long_t futex_offset;
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compat_uptr_t list_op_pending;
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};
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#ifdef CONFIG_COMPAT_OLD_SIGACTION
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struct compat_old_sigaction {
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compat_uptr_t sa_handler;
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compat_old_sigset_t sa_mask;
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compat_ulong_t sa_flags;
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compat_uptr_t sa_restorer;
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};
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#endif
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struct compat_keyctl_kdf_params {
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compat_uptr_t hashname;
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compat_uptr_t otherinfo;
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__u32 otherinfolen;
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__u32 __spare[8];
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};
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struct compat_stat;
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struct compat_statfs;
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struct compat_statfs64;
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struct compat_old_linux_dirent;
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struct compat_linux_dirent;
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struct linux_dirent64;
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struct compat_msghdr;
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struct compat_mmsghdr;
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struct compat_sysinfo;
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struct compat_sysctl_args;
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struct compat_kexec_segment;
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struct compat_mq_attr;
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struct compat_msgbuf;
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void copy_siginfo_to_external32(struct compat_siginfo *to,
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const struct kernel_siginfo *from);
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int copy_siginfo_from_user32(kernel_siginfo_t *to,
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const struct compat_siginfo __user *from);
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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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#ifndef copy_siginfo_to_user32
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#define copy_siginfo_to_user32 __copy_siginfo_to_user32
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#endif
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int get_compat_sigevent(struct sigevent *event,
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const struct compat_sigevent __user *u_event);
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extern int get_compat_sigset(sigset_t *set, const compat_sigset_t __user *compat);
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/*
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* Defined inline such that size can be compile time constant, which avoids
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* CONFIG_HARDENED_USERCOPY complaining about copies from task_struct
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*/
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static inline int
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put_compat_sigset(compat_sigset_t __user *compat, const sigset_t *set,
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unsigned int size)
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{
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/* size <= sizeof(compat_sigset_t) <= sizeof(sigset_t) */
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#if defined(__BIG_ENDIAN) && defined(CONFIG_64BIT)
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compat_sigset_t v;
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switch (_NSIG_WORDS) {
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case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
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fallthrough;
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case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
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fallthrough;
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case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
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fallthrough;
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case 1: v.sig[1] = (set->sig[0] >> 32); v.sig[0] = set->sig[0];
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}
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return copy_to_user(compat, &v, size) ? -EFAULT : 0;
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#else
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return copy_to_user(compat, set, size) ? -EFAULT : 0;
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#endif
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}
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#ifdef CONFIG_CPU_BIG_ENDIAN
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#define unsafe_put_compat_sigset(compat, set, label) do { \
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compat_sigset_t __user *__c = compat; \
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const sigset_t *__s = set; \
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\
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switch (_NSIG_WORDS) { \
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case 4: \
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unsafe_put_user(__s->sig[3] >> 32, &__c->sig[7], label); \
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unsafe_put_user(__s->sig[3], &__c->sig[6], label); \
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fallthrough; \
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case 3: \
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unsafe_put_user(__s->sig[2] >> 32, &__c->sig[5], label); \
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unsafe_put_user(__s->sig[2], &__c->sig[4], label); \
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fallthrough; \
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case 2: \
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unsafe_put_user(__s->sig[1] >> 32, &__c->sig[3], label); \
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unsafe_put_user(__s->sig[1], &__c->sig[2], label); \
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fallthrough; \
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case 1: \
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unsafe_put_user(__s->sig[0] >> 32, &__c->sig[1], label); \
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unsafe_put_user(__s->sig[0], &__c->sig[0], label); \
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} \
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} while (0)
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#define unsafe_get_compat_sigset(set, compat, label) do { \
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const compat_sigset_t __user *__c = compat; \
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compat_sigset_word hi, lo; \
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sigset_t *__s = set; \
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\
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switch (_NSIG_WORDS) { \
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case 4: \
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unsafe_get_user(lo, &__c->sig[7], label); \
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unsafe_get_user(hi, &__c->sig[6], label); \
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__s->sig[3] = hi | (((long)lo) << 32); \
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fallthrough; \
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case 3: \
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unsafe_get_user(lo, &__c->sig[5], label); \
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unsafe_get_user(hi, &__c->sig[4], label); \
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__s->sig[2] = hi | (((long)lo) << 32); \
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fallthrough; \
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case 2: \
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unsafe_get_user(lo, &__c->sig[3], label); \
|
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unsafe_get_user(hi, &__c->sig[2], label); \
|
|
__s->sig[1] = hi | (((long)lo) << 32); \
|
|
fallthrough; \
|
|
case 1: \
|
|
unsafe_get_user(lo, &__c->sig[1], label); \
|
|
unsafe_get_user(hi, &__c->sig[0], label); \
|
|
__s->sig[0] = hi | (((long)lo) << 32); \
|
|
} \
|
|
} while (0)
|
|
#else
|
|
#define unsafe_put_compat_sigset(compat, set, label) do { \
|
|
compat_sigset_t __user *__c = compat; \
|
|
const sigset_t *__s = set; \
|
|
\
|
|
unsafe_copy_to_user(__c, __s, sizeof(*__c), label); \
|
|
} while (0)
|
|
|
|
#define unsafe_get_compat_sigset(set, compat, label) do { \
|
|
const compat_sigset_t __user *__c = compat; \
|
|
sigset_t *__s = set; \
|
|
\
|
|
unsafe_copy_from_user(__s, __c, sizeof(*__c), label); \
|
|
} while (0)
|
|
#endif
|
|
|
|
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);
|
|
|
|
struct epoll_event; /* fortunately, this one is fixed-layout */
|
|
|
|
int compat_restore_altstack(const compat_stack_t __user *uss);
|
|
int __compat_save_altstack(compat_stack_t __user *, unsigned long);
|
|
#define unsafe_compat_save_altstack(uss, sp, label) do { \
|
|
compat_stack_t __user *__uss = uss; \
|
|
struct task_struct *t = current; \
|
|
unsafe_put_user(ptr_to_compat((void __user *)t->sas_ss_sp), \
|
|
&__uss->ss_sp, label); \
|
|
unsafe_put_user(t->sas_ss_flags, &__uss->ss_flags, label); \
|
|
unsafe_put_user(t->sas_ss_size, &__uss->ss_size, label); \
|
|
} while (0);
|
|
|
|
/*
|
|
* These syscall function prototypes are kept in the same order as
|
|
* include/uapi/asm-generic/unistd.h. Deprecated or obsolete system calls
|
|
* go below.
|
|
*
|
|
* Please note that these prototypes here are only provided for information
|
|
* purposes, for static analysis, and for linking from the syscall table.
|
|
* These functions should not be called elsewhere from kernel code.
|
|
*
|
|
* As the syscall calling convention may be different from the default
|
|
* for architectures overriding the syscall calling convention, do not
|
|
* include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled.
|
|
*/
|
|
#ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
|
|
asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
|
|
asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr,
|
|
u32 __user *iocb);
|
|
asmlinkage long compat_sys_io_pgetevents(compat_aio_context_t ctx_id,
|
|
compat_long_t min_nr,
|
|
compat_long_t nr,
|
|
struct io_event __user *events,
|
|
struct old_timespec32 __user *timeout,
|
|
const struct __compat_aio_sigset __user *usig);
|
|
asmlinkage long compat_sys_io_pgetevents_time64(compat_aio_context_t ctx_id,
|
|
compat_long_t min_nr,
|
|
compat_long_t nr,
|
|
struct io_event __user *events,
|
|
struct __kernel_timespec __user *timeout,
|
|
const struct __compat_aio_sigset __user *usig);
|
|
|
|
/* fs/cookies.c */
|
|
asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t);
|
|
|
|
/* fs/eventpoll.c */
|
|
asmlinkage long compat_sys_epoll_pwait(int epfd,
|
|
struct epoll_event __user *events,
|
|
int maxevents, int timeout,
|
|
const compat_sigset_t __user *sigmask,
|
|
compat_size_t sigsetsize);
|
|
asmlinkage long compat_sys_epoll_pwait2(int epfd,
|
|
struct epoll_event __user *events,
|
|
int maxevents,
|
|
const struct __kernel_timespec __user *timeout,
|
|
const compat_sigset_t __user *sigmask,
|
|
compat_size_t sigsetsize);
|
|
|
|
/* fs/fcntl.c */
|
|
asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
|
|
compat_ulong_t arg);
|
|
asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
|
|
compat_ulong_t arg);
|
|
|
|
/* fs/ioctl.c */
|
|
asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
|
|
compat_ulong_t arg);
|
|
|
|
/* fs/open.c */
|
|
asmlinkage long compat_sys_statfs(const char __user *pathname,
|
|
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_fstatfs(unsigned int fd,
|
|
struct compat_statfs __user *buf);
|
|
asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
|
|
struct compat_statfs64 __user *buf);
|
|
asmlinkage long compat_sys_truncate(const char __user *, compat_off_t);
|
|
asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t);
|
|
/* No generic prototype for truncate64, ftruncate64, fallocate */
|
|
asmlinkage long compat_sys_openat(int dfd, const char __user *filename,
|
|
int flags, umode_t mode);
|
|
|
|
/* fs/readdir.c */
|
|
asmlinkage long compat_sys_getdents(unsigned int fd,
|
|
struct compat_linux_dirent __user *dirent,
|
|
unsigned int count);
|
|
|
|
/* fs/read_write.c */
|
|
asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int);
|
|
/* No generic prototype for pread64 and pwrite64 */
|
|
asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd,
|
|
const struct iovec __user *vec,
|
|
compat_ulong_t vlen, u32 pos_low, u32 pos_high);
|
|
asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd,
|
|
const struct iovec __user *vec,
|
|
compat_ulong_t vlen, u32 pos_low, u32 pos_high);
|
|
#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64
|
|
asmlinkage long compat_sys_preadv64(unsigned long fd,
|
|
const struct iovec __user *vec,
|
|
unsigned long vlen, loff_t pos);
|
|
#endif
|
|
|
|
#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64
|
|
asmlinkage long compat_sys_pwritev64(unsigned long fd,
|
|
const struct iovec __user *vec,
|
|
unsigned long vlen, loff_t pos);
|
|
#endif
|
|
|
|
/* fs/sendfile.c */
|
|
asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
|
|
compat_off_t __user *offset, compat_size_t count);
|
|
asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
|
|
compat_loff_t __user *offset, compat_size_t count);
|
|
|
|
/* fs/select.c */
|
|
asmlinkage long compat_sys_pselect6_time32(int n, compat_ulong_t __user *inp,
|
|
compat_ulong_t __user *outp,
|
|
compat_ulong_t __user *exp,
|
|
struct old_timespec32 __user *tsp,
|
|
void __user *sig);
|
|
asmlinkage long compat_sys_pselect6_time64(int n, compat_ulong_t __user *inp,
|
|
compat_ulong_t __user *outp,
|
|
compat_ulong_t __user *exp,
|
|
struct __kernel_timespec __user *tsp,
|
|
void __user *sig);
|
|
asmlinkage long compat_sys_ppoll_time32(struct pollfd __user *ufds,
|
|
unsigned int nfds,
|
|
struct old_timespec32 __user *tsp,
|
|
const compat_sigset_t __user *sigmask,
|
|
compat_size_t sigsetsize);
|
|
asmlinkage long compat_sys_ppoll_time64(struct pollfd __user *ufds,
|
|
unsigned int nfds,
|
|
struct __kernel_timespec __user *tsp,
|
|
const compat_sigset_t __user *sigmask,
|
|
compat_size_t sigsetsize);
|
|
|
|
/* fs/signalfd.c */
|
|
asmlinkage long compat_sys_signalfd4(int ufd,
|
|
const compat_sigset_t __user *sigmask,
|
|
compat_size_t sigsetsize, int flags);
|
|
|
|
/* fs/stat.c */
|
|
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);
|
|
|
|
/* fs/sync.c: No generic prototype for sync_file_range and sync_file_range2 */
|
|
|
|
/* kernel/exit.c */
|
|
asmlinkage long compat_sys_waitid(int, compat_pid_t,
|
|
struct compat_siginfo __user *, int,
|
|
struct compat_rusage __user *);
|
|
|
|
|
|
|
|
/* kernel/futex.c */
|
|
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);
|
|
|
|
/* kernel/itimer.c */
|
|
asmlinkage long compat_sys_getitimer(int which,
|
|
struct old_itimerval32 __user *it);
|
|
asmlinkage long compat_sys_setitimer(int which,
|
|
struct old_itimerval32 __user *in,
|
|
struct old_itimerval32 __user *out);
|
|
|
|
/* kernel/kexec.c */
|
|
asmlinkage long compat_sys_kexec_load(compat_ulong_t entry,
|
|
compat_ulong_t nr_segments,
|
|
struct compat_kexec_segment __user *,
|
|
compat_ulong_t flags);
|
|
|
|
/* kernel/posix-timers.c */
|
|
asmlinkage long compat_sys_timer_create(clockid_t which_clock,
|
|
struct compat_sigevent __user *timer_event_spec,
|
|
timer_t __user *created_timer_id);
|
|
|
|
/* kernel/ptrace.c */
|
|
asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
|
|
compat_long_t addr, compat_long_t data);
|
|
|
|
/* kernel/sched/core.c */
|
|
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);
|
|
|
|
/* kernel/signal.c */
|
|
asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
|
|
compat_stack_t __user *uoss_ptr);
|
|
asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset,
|
|
compat_size_t sigsetsize);
|
|
#ifndef CONFIG_ODD_RT_SIGACTION
|
|
asmlinkage long compat_sys_rt_sigaction(int,
|
|
const struct compat_sigaction __user *,
|
|
struct compat_sigaction __user *,
|
|
compat_size_t);
|
|
#endif
|
|
asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set,
|
|
compat_sigset_t __user *oset,
|
|
compat_size_t sigsetsize);
|
|
asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset,
|
|
compat_size_t sigsetsize);
|
|
asmlinkage long compat_sys_rt_sigtimedwait_time32(compat_sigset_t __user *uthese,
|
|
struct compat_siginfo __user *uinfo,
|
|
struct old_timespec32 __user *uts, compat_size_t sigsetsize);
|
|
asmlinkage long compat_sys_rt_sigtimedwait_time64(compat_sigset_t __user *uthese,
|
|
struct compat_siginfo __user *uinfo,
|
|
struct __kernel_timespec __user *uts, compat_size_t sigsetsize);
|
|
asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig,
|
|
struct compat_siginfo __user *uinfo);
|
|
/* No generic prototype for rt_sigreturn */
|
|
|
|
/* kernel/sys.c */
|
|
asmlinkage long compat_sys_times(struct compat_tms __user *tbuf);
|
|
asmlinkage long compat_sys_getrlimit(unsigned int resource,
|
|
struct compat_rlimit __user *rlim);
|
|
asmlinkage long compat_sys_setrlimit(unsigned int resource,
|
|
struct compat_rlimit __user *rlim);
|
|
asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru);
|
|
|
|
/* kernel/time.c */
|
|
asmlinkage long compat_sys_gettimeofday(struct old_timeval32 __user *tv,
|
|
struct timezone __user *tz);
|
|
asmlinkage long compat_sys_settimeofday(struct old_timeval32 __user *tv,
|
|
struct timezone __user *tz);
|
|
|
|
/* kernel/timer.c */
|
|
asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
|
|
|
|
/* ipc/mqueue.c */
|
|
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_notify(mqd_t mqdes,
|
|
const struct compat_sigevent __user *u_notification);
|
|
asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
|
|
const struct compat_mq_attr __user *u_mqstat,
|
|
struct compat_mq_attr __user *u_omqstat);
|
|
|
|
/* ipc/msg.c */
|
|
asmlinkage long compat_sys_msgctl(int first, int second, void __user *uptr);
|
|
asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp,
|
|
compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg);
|
|
asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp,
|
|
compat_ssize_t msgsz, int msgflg);
|
|
|
|
/* ipc/sem.c */
|
|
asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
|
|
|
|
/* ipc/shm.c */
|
|
asmlinkage long compat_sys_shmctl(int first, int second, void __user *uptr);
|
|
asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
|
|
|
|
/* net/socket.c */
|
|
asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len,
|
|
unsigned flags, struct sockaddr __user *addr,
|
|
int __user *addrlen);
|
|
asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg,
|
|
unsigned flags);
|
|
asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
|
|
unsigned int flags);
|
|
|
|
/* mm/filemap.c: No generic prototype for readahead */
|
|
|
|
/* security/keys/keyctl.c */
|
|
asmlinkage long compat_sys_keyctl(u32 option,
|
|
u32 arg2, u32 arg3, u32 arg4, u32 arg5);
|
|
|
|
/* arch/example/kernel/sys_example.c */
|
|
asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
|
|
const compat_uptr_t __user *envp);
|
|
|
|
/* mm/fadvise.c: No generic prototype for fadvise64_64 */
|
|
|
|
/* mm/, CONFIG_MMU only */
|
|
asmlinkage long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid,
|
|
compat_pid_t pid, int sig,
|
|
struct compat_siginfo __user *uinfo);
|
|
asmlinkage long compat_sys_recvmmsg_time64(int fd, struct compat_mmsghdr __user *mmsg,
|
|
unsigned vlen, unsigned int flags,
|
|
struct __kernel_timespec __user *timeout);
|
|
asmlinkage long compat_sys_recvmmsg_time32(int fd, struct compat_mmsghdr __user *mmsg,
|
|
unsigned vlen, unsigned int flags,
|
|
struct old_timespec32 __user *timeout);
|
|
asmlinkage long compat_sys_wait4(compat_pid_t pid,
|
|
compat_uint_t __user *stat_addr, int options,
|
|
struct compat_rusage __user *ru);
|
|
asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32,
|
|
int, const char __user *);
|
|
asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
|
|
struct file_handle __user *handle,
|
|
int flags);
|
|
asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
|
|
unsigned vlen, unsigned int flags);
|
|
asmlinkage long compat_sys_execveat(int dfd, const char __user *filename,
|
|
const compat_uptr_t __user *argv,
|
|
const compat_uptr_t __user *envp, int flags);
|
|
asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd,
|
|
const struct iovec __user *vec,
|
|
compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
|
|
asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd,
|
|
const struct iovec __user *vec,
|
|
compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
|
|
#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2
|
|
asmlinkage long compat_sys_preadv64v2(unsigned long fd,
|
|
const struct iovec __user *vec,
|
|
unsigned long vlen, loff_t pos, rwf_t flags);
|
|
#endif
|
|
|
|
#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2
|
|
asmlinkage long compat_sys_pwritev64v2(unsigned long fd,
|
|
const struct iovec __user *vec,
|
|
unsigned long vlen, loff_t pos, rwf_t flags);
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Deprecated system calls which are still defined in
|
|
* include/uapi/asm-generic/unistd.h and wanted by >= 1 arch
|
|
*/
|
|
|
|
/* __ARCH_WANT_SYSCALL_NO_AT */
|
|
asmlinkage long compat_sys_open(const char __user *filename, int flags,
|
|
umode_t mode);
|
|
|
|
/* __ARCH_WANT_SYSCALL_NO_FLAGS */
|
|
asmlinkage long compat_sys_signalfd(int ufd,
|
|
const compat_sigset_t __user *sigmask,
|
|
compat_size_t sigsetsize);
|
|
|
|
/* __ARCH_WANT_SYSCALL_OFF_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);
|
|
|
|
/* __ARCH_WANT_SYSCALL_DEPRECATED */
|
|
asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
|
|
compat_ulong_t __user *outp, compat_ulong_t __user *exp,
|
|
struct old_timeval32 __user *tvp);
|
|
asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32);
|
|
asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len,
|
|
unsigned flags);
|
|
|
|
/* obsolete: fs/readdir.c */
|
|
asmlinkage long compat_sys_old_readdir(unsigned int fd,
|
|
struct compat_old_linux_dirent __user *,
|
|
unsigned int count);
|
|
|
|
/* obsolete: fs/select.c */
|
|
asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
|
|
|
|
/* obsolete: ipc */
|
|
asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32);
|
|
|
|
/* obsolete: kernel/signal.c */
|
|
#ifdef __ARCH_WANT_SYS_SIGPENDING
|
|
asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set);
|
|
#endif
|
|
|
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#ifdef __ARCH_WANT_SYS_SIGPROCMASK
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asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset,
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compat_old_sigset_t __user *oset);
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#endif
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#ifdef CONFIG_COMPAT_OLD_SIGACTION
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asmlinkage long compat_sys_sigaction(int sig,
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const struct compat_old_sigaction __user *act,
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struct compat_old_sigaction __user *oact);
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#endif
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/* obsolete: net/socket.c */
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asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
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#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
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/**
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* ns_to_old_timeval32 - Compat version of ns_to_timeval
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* @nsec: the nanoseconds value to be converted
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*
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* Returns the old_timeval32 representation of the nsec parameter.
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*/
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static inline struct old_timeval32 ns_to_old_timeval32(s64 nsec)
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{
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struct __kernel_old_timeval tv;
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struct old_timeval32 ctv;
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tv = ns_to_kernel_old_timeval(nsec);
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ctv.tv_sec = tv.tv_sec;
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ctv.tv_usec = tv.tv_usec;
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return ctv;
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}
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/*
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* Kernel code should not call compat syscalls (i.e., compat_sys_xyzyyz())
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* directly. Instead, use one of the functions which work equivalently, such
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* as the kcompat_sys_xyzyyz() functions prototyped below.
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*/
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int kcompat_sys_statfs64(const char __user * pathname, compat_size_t sz,
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struct compat_statfs64 __user * buf);
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int kcompat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
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struct compat_statfs64 __user * buf);
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#ifdef CONFIG_COMPAT
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/*
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* For most but not all architectures, "am I in a compat syscall?" and
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* "am I a compat task?" are the same question. For architectures on which
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* they aren't the same question, arch code can override in_compat_syscall.
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*/
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#ifndef in_compat_syscall
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static inline bool in_compat_syscall(void) { return is_compat_task(); }
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#endif
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#else /* !CONFIG_COMPAT */
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#define is_compat_task() (0)
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/* Ensure no one redefines in_compat_syscall() under !CONFIG_COMPAT */
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#define in_compat_syscall in_compat_syscall
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static inline bool in_compat_syscall(void) { return false; }
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#endif /* CONFIG_COMPAT */
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#define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
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|
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#define BITS_TO_COMPAT_LONGS(bits) DIV_ROUND_UP(bits, BITS_PER_COMPAT_LONG)
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|
|
long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
|
|
unsigned long bitmap_size);
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|
long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
|
|
unsigned long bitmap_size);
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|
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/*
|
|
* Some legacy ABIs like the i386 one use less than natural alignment for 64-bit
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* types, and will need special compat treatment for that. Most architectures
|
|
* don't need that special handling even for compat syscalls.
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|
*/
|
|
#ifndef compat_need_64bit_alignment_fixup
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|
#define compat_need_64bit_alignment_fixup() false
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|
#endif
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|
|
|
/*
|
|
* A pointer passed in from user mode. This should not
|
|
* be used for syscall parameters, just declare them
|
|
* as pointers because the syscall entry code will have
|
|
* appropriately converted them already.
|
|
*/
|
|
#ifndef compat_ptr
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|
static inline void __user *compat_ptr(compat_uptr_t uptr)
|
|
{
|
|
return (void __user *)(unsigned long)uptr;
|
|
}
|
|
#endif
|
|
|
|
static inline compat_uptr_t ptr_to_compat(void __user *uptr)
|
|
{
|
|
return (u32)(unsigned long)uptr;
|
|
}
|
|
|
|
#endif /* _LINUX_COMPAT_H */
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