1044 lines
34 KiB
C
1044 lines
34 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/compat_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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#ifdef CONFIG_COMPAT
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#include <asm/siginfo.h>
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#include <asm/signal.h>
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#endif
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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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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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#ifdef CONFIG_COMPAT
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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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typedef compat_ulong_t compat_aio_context_t;
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struct compat_sel_arg_struct;
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struct rusage;
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struct compat_utimbuf {
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compat_time_t actime;
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compat_time_t modtime;
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};
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struct compat_itimerval {
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struct compat_timeval it_interval;
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struct compat_timeval it_value;
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};
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struct itimerval;
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int get_compat_itimerval(struct itimerval *, const struct compat_itimerval __user *);
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int put_compat_itimerval(struct compat_itimerval __user *, const struct itimerval *);
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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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struct compat_timex {
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compat_uint_t modes;
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compat_long_t offset;
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compat_long_t freq;
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compat_long_t maxerror;
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compat_long_t esterror;
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compat_int_t status;
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compat_long_t constant;
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compat_long_t precision;
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compat_long_t tolerance;
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struct compat_timeval time;
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compat_long_t tick;
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compat_long_t ppsfreq;
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compat_long_t jitter;
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compat_int_t shift;
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compat_long_t stabil;
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compat_long_t jitcnt;
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compat_long_t calcnt;
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compat_long_t errcnt;
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compat_long_t stbcnt;
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compat_int_t tai;
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compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
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compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32;
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compat_int_t:32; compat_int_t:32; compat_int_t:32;
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};
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struct timex;
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int compat_get_timex(struct timex *, const struct compat_timex __user *);
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int compat_put_timex(struct compat_timex __user *, const struct timex *);
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#define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
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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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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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#ifdef __ARCH_SI_TRAPNO
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int _trapno; /* TRAP # which caused the signal */
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#endif
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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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/*
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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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};
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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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/*
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* These functions operate on 32- or 64-bit specs depending on
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* COMPAT_USE_64BIT_TIME, hence the void user pointer arguments.
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*/
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extern int compat_get_timespec(struct timespec *, const void __user *);
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extern int compat_put_timespec(const struct timespec *, void __user *);
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extern int compat_get_timeval(struct timeval *, const void __user *);
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extern int compat_put_timeval(const struct timeval *, void __user *);
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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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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 compat_timeval ru_utime;
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struct compat_timeval 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_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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#define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
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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,
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unsigned long bitmap_size);
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long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
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unsigned long bitmap_size);
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int copy_siginfo_from_user32(siginfo_t *to, const struct compat_siginfo __user *from);
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int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from);
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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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static inline int compat_timeval_compare(struct compat_timeval *lhs,
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struct compat_timeval *rhs)
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{
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if (lhs->tv_sec < rhs->tv_sec)
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return -1;
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if (lhs->tv_sec > rhs->tv_sec)
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return 1;
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return lhs->tv_usec - rhs->tv_usec;
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}
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static inline int compat_timespec_compare(struct compat_timespec *lhs,
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struct compat_timespec *rhs)
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{
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if (lhs->tv_sec < rhs->tv_sec)
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return -1;
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if (lhs->tv_sec > rhs->tv_sec)
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return 1;
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return lhs->tv_nsec - rhs->tv_nsec;
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}
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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) */
|
|
#ifdef __BIG_ENDIAN
|
|
compat_sigset_t v;
|
|
switch (_NSIG_WORDS) {
|
|
case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
|
|
case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
|
|
case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
|
|
case 1: v.sig[1] = (set->sig[0] >> 32); v.sig[0] = set->sig[0];
|
|
}
|
|
return copy_to_user(compat, &v, size) ? -EFAULT : 0;
|
|
#else
|
|
return copy_to_user(compat, set, size) ? -EFAULT : 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 */
|
|
|
|
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);
|
|
|
|
extern void __user *compat_alloc_user_space(unsigned long len);
|
|
|
|
int compat_restore_altstack(const compat_stack_t __user *uss);
|
|
int __compat_save_altstack(compat_stack_t __user *, unsigned long);
|
|
#define compat_save_altstack_ex(uss, sp) do { \
|
|
compat_stack_t __user *__uss = uss; \
|
|
struct task_struct *t = current; \
|
|
put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \
|
|
put_user_ex(t->sas_ss_flags, &__uss->ss_flags); \
|
|
put_user_ex(t->sas_ss_size, &__uss->ss_size); \
|
|
if (t->sas_ss_flags & SS_AUTODISARM) \
|
|
sas_ss_reset(t); \
|
|
} 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_getevents(compat_aio_context_t ctx_id,
|
|
compat_long_t min_nr,
|
|
compat_long_t nr,
|
|
struct io_event __user *events,
|
|
struct compat_timespec __user *timeout);
|
|
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 compat_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);
|
|
|
|
/* 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/namespace.c */
|
|
asmlinkage long compat_sys_mount(const char __user *dev_name,
|
|
const char __user *dir_name,
|
|
const char __user *type, compat_ulong_t flags,
|
|
const void __user *data);
|
|
|
|
/* 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);
|
|
asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd,
|
|
const struct compat_iovec __user *vec, compat_ulong_t vlen);
|
|
asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd,
|
|
const struct compat_iovec __user *vec, compat_ulong_t vlen);
|
|
/* No generic prototype for pread64 and pwrite64 */
|
|
asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd,
|
|
const struct compat_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 compat_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 compat_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 compat_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(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);
|
|
|
|
/* fs/signalfd.c */
|
|
asmlinkage long compat_sys_signalfd4(int ufd,
|
|
const compat_sigset_t __user *sigmask,
|
|
compat_size_t sigsetsize, int flags);
|
|
|
|
/* fs/splice.c */
|
|
asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
|
|
unsigned int nr_segs, unsigned 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 */
|
|
|
|
/* fs/timerfd.c */
|
|
asmlinkage long compat_sys_timerfd_gettime(int ufd,
|
|
struct compat_itimerspec __user *otmr);
|
|
asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
|
|
const struct compat_itimerspec __user *utmr,
|
|
struct compat_itimerspec __user *otmr);
|
|
|
|
/* fs/utimes.c */
|
|
asmlinkage long compat_sys_utimensat(unsigned int dfd,
|
|
const char __user *filename,
|
|
struct compat_timespec __user *t,
|
|
int flags);
|
|
|
|
/* 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_futex(u32 __user *uaddr, int op, u32 val,
|
|
struct compat_timespec __user *utime, u32 __user *uaddr2,
|
|
u32 val3);
|
|
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/hrtimer.c */
|
|
asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
|
|
struct compat_timespec __user *rmtp);
|
|
|
|
/* kernel/itimer.c */
|
|
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);
|
|
|
|
/* 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);
|
|
asmlinkage long compat_sys_timer_gettime(timer_t timer_id,
|
|
struct compat_itimerspec __user *setting);
|
|
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_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_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);
|
|
|
|
/* 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);
|
|
asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid,
|
|
struct compat_timespec __user *interval);
|
|
|
|
/* 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(compat_sigset_t __user *uthese,
|
|
struct compat_siginfo __user *uinfo,
|
|
struct compat_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 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);
|
|
|
|
/* 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_timedsend(mqd_t mqdes,
|
|
const char __user *u_msg_ptr,
|
|
compat_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,
|
|
compat_size_t msg_len, unsigned int __user *u_msg_prio,
|
|
const struct compat_timespec __user *u_abs_timeout);
|
|
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);
|
|
asmlinkage long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
|
|
unsigned nsems, const struct compat_timespec __user *timeout);
|
|
|
|
/* 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_setsockopt(int fd, int level, int optname,
|
|
char __user *optval, unsigned int optlen);
|
|
asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
|
|
char __user *optval, int __user *optlen);
|
|
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_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_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_migrate_pages(compat_pid_t pid,
|
|
compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes,
|
|
const compat_ulong_t __user *new_nodes);
|
|
asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages,
|
|
__u32 __user *pages,
|
|
const int __user *nodes,
|
|
int __user *status,
|
|
int flags);
|
|
|
|
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(int fd, struct compat_mmsghdr __user *mmsg,
|
|
unsigned vlen, unsigned int flags,
|
|
struct compat_timespec __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,
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struct file_handle __user *handle,
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int flags);
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asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock,
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struct compat_timex __user *tp);
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asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
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unsigned vlen, unsigned int flags);
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asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
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const struct compat_iovec __user *lvec,
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compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
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compat_ulong_t riovcnt, compat_ulong_t flags);
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asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
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const struct compat_iovec __user *lvec,
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compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
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compat_ulong_t riovcnt, compat_ulong_t flags);
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asmlinkage long compat_sys_execveat(int dfd, const char __user *filename,
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const compat_uptr_t __user *argv,
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const compat_uptr_t __user *envp, int flags);
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asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd,
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const struct compat_iovec __user *vec,
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compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
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asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd,
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const struct compat_iovec __user *vec,
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compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
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#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2
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asmlinkage long compat_sys_readv64v2(unsigned long fd,
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const struct compat_iovec __user *vec,
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unsigned long vlen, loff_t pos, rwf_t flags);
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#endif
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|
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#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2
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asmlinkage long compat_sys_pwritev64v2(unsigned long fd,
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const struct compat_iovec __user *vec,
|
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unsigned long vlen, loff_t pos, rwf_t flags);
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#endif
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|
|
|
|
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/*
|
|
* Deprecated system calls which are still defined in
|
|
* include/uapi/asm-generic/unistd.h and wanted by >= 1 arch
|
|
*/
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|
|
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/* __ARCH_WANT_SYSCALL_NO_AT */
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asmlinkage long compat_sys_open(const char __user *filename, int flags,
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umode_t mode);
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asmlinkage long compat_sys_utimes(const char __user *filename,
|
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struct compat_timeval __user *t);
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|
|
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/* __ARCH_WANT_SYSCALL_NO_FLAGS */
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asmlinkage long compat_sys_signalfd(int ufd,
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const compat_sigset_t __user *sigmask,
|
|
compat_size_t sigsetsize);
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|
|
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/* __ARCH_WANT_SYSCALL_OFF_T */
|
|
asmlinkage long compat_sys_newstat(const char __user *filename,
|
|
struct compat_stat __user *statbuf);
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|
asmlinkage long compat_sys_newlstat(const char __user *filename,
|
|
struct compat_stat __user *statbuf);
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|
|
|
/* __ARCH_WANT_SYSCALL_DEPRECATED */
|
|
asmlinkage long compat_sys_time(compat_time_t __user *tloc);
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|
asmlinkage long compat_sys_utime(const char __user *filename,
|
|
struct compat_utimbuf __user *t);
|
|
asmlinkage long compat_sys_futimesat(unsigned int dfd,
|
|
const char __user *filename,
|
|
struct compat_timeval __user *t);
|
|
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_ustat(unsigned dev, struct compat_ustat __user *u32);
|
|
asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len,
|
|
unsigned flags);
|
|
asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
|
|
|
|
/* 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
|
|
|
|
#ifdef __ARCH_WANT_SYS_SIGPROCMASK
|
|
asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset,
|
|
compat_old_sigset_t __user *oset);
|
|
#endif
|
|
#ifdef CONFIG_COMPAT_OLD_SIGACTION
|
|
asmlinkage long compat_sys_sigaction(int sig,
|
|
const struct compat_old_sigaction __user *act,
|
|
struct compat_old_sigaction __user *oact);
|
|
#endif
|
|
|
|
/* obsolete: kernel/time/time.c */
|
|
asmlinkage long compat_sys_stime(compat_time_t __user *tptr);
|
|
|
|
/* obsolete: net/socket.c */
|
|
asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
|
|
|
|
#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
|
|
|
|
|
|
/*
|
|
* For most but not all architectures, "am I in a compat syscall?" and
|
|
* "am I a compat task?" are the same question. For architectures on which
|
|
* they aren't the same question, arch code can override in_compat_syscall.
|
|
*/
|
|
|
|
#ifndef in_compat_syscall
|
|
static inline bool in_compat_syscall(void) { return is_compat_task(); }
|
|
#endif
|
|
|
|
/**
|
|
* ns_to_compat_timeval - Compat version of ns_to_timeval
|
|
* @nsec: the nanoseconds value to be converted
|
|
*
|
|
* Returns the compat_timeval representation of the nsec parameter.
|
|
*/
|
|
static inline struct compat_timeval ns_to_compat_timeval(s64 nsec)
|
|
{
|
|
struct timeval tv;
|
|
struct compat_timeval ctv;
|
|
|
|
tv = ns_to_timeval(nsec);
|
|
ctv.tv_sec = tv.tv_sec;
|
|
ctv.tv_usec = tv.tv_usec;
|
|
|
|
return ctv;
|
|
}
|
|
|
|
/*
|
|
* Kernel code should not call compat syscalls (i.e., compat_sys_xyzyyz())
|
|
* directly. Instead, use one of the functions which work equivalently, such
|
|
* as the kcompat_sys_xyzyyz() functions prototyped below.
|
|
*/
|
|
|
|
int kcompat_sys_statfs64(const char __user * pathname, compat_size_t sz,
|
|
struct compat_statfs64 __user * buf);
|
|
int kcompat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
|
|
struct compat_statfs64 __user * buf);
|
|
|
|
#else /* !CONFIG_COMPAT */
|
|
|
|
#define is_compat_task() (0)
|
|
#ifndef in_compat_syscall
|
|
static inline bool in_compat_syscall(void) { return false; }
|
|
#endif
|
|
|
|
#endif /* CONFIG_COMPAT */
|
|
|
|
#endif /* _LINUX_COMPAT_H */
|