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972 lines
31 KiB
972 lines
31 KiB
/* 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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|
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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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#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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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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#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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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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typedef struct { |
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compat_sigset_word sig[_COMPAT_NSIG_WORDS]; |
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} compat_sigset_t; |
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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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#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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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_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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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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#ifdef __BIG_ENDIAN |
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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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#else |
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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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unsafe_copy_to_user(__c, __s, sizeof(*__c), label); \ |
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} while (0) |
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#endif |
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extern int compat_ptrace_request(struct task_struct *child, |
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compat_long_t request, |
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compat_ulong_t addr, compat_ulong_t data); |
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|
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extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, |
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compat_ulong_t addr, compat_ulong_t data); |
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|
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struct epoll_event; /* fortunately, this one is fixed-layout */ |
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|
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extern void __user *compat_alloc_user_space(unsigned long len); |
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|
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int compat_restore_altstack(const compat_stack_t __user *uss); |
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int __compat_save_altstack(compat_stack_t __user *, unsigned long); |
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#define unsafe_compat_save_altstack(uss, sp, label) do { \ |
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compat_stack_t __user *__uss = uss; \ |
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struct task_struct *t = current; \ |
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unsafe_put_user(ptr_to_compat((void __user *)t->sas_ss_sp), \ |
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&__uss->ss_sp, label); \ |
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unsafe_put_user(t->sas_ss_flags, &__uss->ss_flags, label); \ |
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unsafe_put_user(t->sas_ss_size, &__uss->ss_size, label); \ |
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if (t->sas_ss_flags & SS_AUTODISARM) \ |
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sas_ss_reset(t); \ |
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} while (0); |
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|
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/* |
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* These syscall function prototypes are kept in the same order as |
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* include/uapi/asm-generic/unistd.h. Deprecated or obsolete system calls |
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* go below. |
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* |
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* Please note that these prototypes here are only provided for information |
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* purposes, for static analysis, and for linking from the syscall table. |
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* These functions should not be called elsewhere from kernel code. |
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* |
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* As the syscall calling convention may be different from the default |
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* for architectures overriding the syscall calling convention, do not |
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* include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. |
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*/ |
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#ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER |
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asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p); |
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asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr, |
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u32 __user *iocb); |
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asmlinkage long compat_sys_io_pgetevents(compat_aio_context_t ctx_id, |
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compat_long_t min_nr, |
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compat_long_t nr, |
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struct io_event __user *events, |
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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_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_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 |
|
|
|
#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: 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_old_timeval32 - Compat version of ns_to_timeval |
|
* @nsec: the nanoseconds value to be converted |
|
* |
|
* Returns the old_timeval32 representation of the nsec parameter. |
|
*/ |
|
static inline struct old_timeval32 ns_to_old_timeval32(s64 nsec) |
|
{ |
|
struct __kernel_old_timeval tv; |
|
struct old_timeval32 ctv; |
|
|
|
tv = ns_to_kernel_old_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) |
|
/* Ensure no one redefines in_compat_syscall() under !CONFIG_COMPAT */ |
|
#define in_compat_syscall in_compat_syscall |
|
static inline bool in_compat_syscall(void) { return false; } |
|
|
|
#endif /* CONFIG_COMPAT */ |
|
|
|
/* |
|
* Some legacy ABIs like the i386 one use less than natural alignment for 64-bit |
|
* types, and will need special compat treatment for that. Most architectures |
|
* don't need that special handling even for compat syscalls. |
|
*/ |
|
#ifndef compat_need_64bit_alignment_fixup |
|
#define compat_need_64bit_alignment_fixup() false |
|
#endif |
|
|
|
/* |
|
* 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 |
|
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 */
|
|
|