diff --git a/sys/sys/kassert.h b/sys/sys/kassert.h new file mode 100644 index 000000000000..bb6847dc404f --- /dev/null +++ b/sys/sys/kassert.h @@ -0,0 +1,149 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 1999 Eivind Eklund + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef _SYS_KASSERT_H_ +#define _SYS_KASSERT_H_ + +#include + +#ifdef _KERNEL +extern const char *panicstr; /* panic message */ +extern bool panicked; +#define KERNEL_PANICKED() __predict_false(panicked) + +#ifdef INVARIANTS /* The option is always available */ +#define VNASSERT(exp, vp, msg) do { \ + if (__predict_false(!(exp))) { \ + vn_printf(vp, "VNASSERT failed: %s not true at %s:%d (%s)\n",\ + #exp, __FILE__, __LINE__, __func__); \ + kassert_panic msg; \ + } \ +} while (0) +#define VNPASS(exp, vp) do { \ + const char *_exp = #exp; \ + VNASSERT(exp, vp, ("condition %s not met at %s:%d (%s)", \ + _exp, __FILE__, __LINE__, __func__)); \ +} while (0) +#define __assert_unreachable() \ + panic("executing segment marked as unreachable at %s:%d (%s)\n", \ + __FILE__, __LINE__, __func__) +#else /* INVARIANTS */ +#define VNASSERT(exp, vp, msg) do { \ +} while (0) +#define VNPASS(exp, vp) do { \ +} while (0) +#define __assert_unreachable() __unreachable() +#endif /* INVARIANTS */ + +#ifndef CTASSERT /* Allow lint to override */ +#define CTASSERT(x) _Static_assert(x, "compile-time assertion failed") +#endif + +/* + * These functions need to be declared before the KASSERT macro is invoked in + * !KASSERT_PANIC_OPTIONAL builds, so their declarations are sort of out of + * place compared to other function definitions in this header. On the other + * hand, this header is a bit disorganized anyway. + */ +void panic(const char *, ...) __dead2 __printflike(1, 2); +void vpanic(const char *, __va_list) __dead2 __printflike(1, 0); +#endif /* _KERNEL */ + +#if defined(_STANDALONE) +/* + * Until we have more experience with KASSERTS that are called + * from the boot loader, they are off. The bootloader does this + * a little differently than the kernel (we just call printf atm). + * we avoid most of the common functions in the boot loader, so + * declare printf() here too. + */ +int printf(const char *, ...) __printflike(1, 2); +# define kassert_panic printf +#else /* !_STANDALONE */ +# if defined(WITNESS) || defined(INVARIANT_SUPPORT) +# ifdef KASSERT_PANIC_OPTIONAL +void kassert_panic(const char *fmt, ...) __printflike(1, 2); +# else +# define kassert_panic panic +# endif /* KASSERT_PANIC_OPTIONAL */ +# endif /* defined(WITNESS) || defined(INVARIANT_SUPPORT) */ +#endif /* _STANDALONE */ + +#if (defined(_KERNEL) && defined(INVARIANTS)) || defined(_STANDALONE) +#define KASSERT(exp,msg) do { \ + if (__predict_false(!(exp))) \ + kassert_panic msg; \ +} while (0) +#else /* !(KERNEL && INVARIANTS) && !_STANDALONE */ +#define KASSERT(exp,msg) do { \ +} while (0) +#endif /* (_KERNEL && INVARIANTS) || _STANDALONE */ + +#ifdef _KERNEL +/* + * Helpful macros for quickly coming up with assertions with informative + * panic messages. + */ +#define MPASS(ex) MPASS4(ex, #ex, __FILE__, __LINE__) +#define MPASS2(ex, what) MPASS4(ex, what, __FILE__, __LINE__) +#define MPASS3(ex, file, line) MPASS4(ex, #ex, file, line) +#define MPASS4(ex, what, file, line) \ + KASSERT((ex), ("Assertion %s failed at %s:%d", what, file, line)) + +/* + * Assert that a pointer can be loaded from memory atomically. + * + * This assertion enforces stronger alignment than necessary. For example, + * on some architectures, atomicity for unaligned loads will depend on + * whether or not the load spans multiple cache lines. + */ +#define ASSERT_ATOMIC_LOAD_PTR(var, msg) \ + KASSERT(sizeof(var) == sizeof(void *) && \ + ((uintptr_t)&(var) & (sizeof(void *) - 1)) == 0, msg) +/* + * Assert that a thread is in critical(9) section. + */ +#define CRITICAL_ASSERT(td) \ + KASSERT((td)->td_critnest >= 1, ("Not in critical section")) + +/* + * If we have already panic'd and this is the thread that called + * panic(), then don't block on any mutexes but silently succeed. + * Otherwise, the kernel will deadlock since the scheduler isn't + * going to run the thread that holds any lock we need. + */ +#define SCHEDULER_STOPPED_TD(td) ({ \ + MPASS((td) == curthread); \ + __predict_false((td)->td_stopsched); \ +}) +#define SCHEDULER_STOPPED() SCHEDULER_STOPPED_TD(curthread) +#endif /* _KERNEL */ + +#endif /* _SYS_KASSERT_H_ */ diff --git a/sys/sys/systm.h b/sys/sys/systm.h index 619de40a20e8..cf13c16f8b4a 100644 --- a/sys/sys/systm.h +++ b/sys/sys/systm.h @@ -1,650 +1,545 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1982, 1988, 1991, 1993 * The Regents of the University of California. All rights reserved. * (c) UNIX System Laboratories, Inc. * All or some portions of this file are derived from material licensed * to the University of California by American Telephone and Telegraph * Co. or Unix System Laboratories, Inc. and are reproduced herein with * the permission of UNIX System Laboratories, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)systm.h 8.7 (Berkeley) 3/29/95 * $FreeBSD$ */ #ifndef _SYS_SYSTM_H_ #define _SYS_SYSTM_H_ #include #include #include #include +#include #include #include /* for people using printf mainly */ __NULLABILITY_PRAGMA_PUSH #ifdef _KERNEL extern int cold; /* nonzero if we are doing a cold boot */ extern int suspend_blocked; /* block suspend due to pending shutdown */ extern int rebooting; /* kern_reboot() has been called. */ -extern const char *panicstr; /* panic message */ -extern bool panicked; -#define KERNEL_PANICKED() __predict_false(panicked) extern char version[]; /* system version */ extern char compiler_version[]; /* compiler version */ extern char copyright[]; /* system copyright */ extern int kstack_pages; /* number of kernel stack pages */ extern u_long pagesizes[]; /* supported page sizes */ extern long physmem; /* physical memory */ extern long realmem; /* 'real' memory */ extern char *rootdevnames[2]; /* names of possible root devices */ extern int boothowto; /* reboot flags, from console subsystem */ extern int bootverbose; /* nonzero to print verbose messages */ extern int maxusers; /* system tune hint */ extern int ngroups_max; /* max # of supplemental groups */ extern int vm_guest; /* Running as virtual machine guest? */ extern u_long maxphys; /* max raw I/O transfer size */ /* * Detected virtual machine guest types. The intention is to expand * and/or add to the VM_GUEST_VM type if specific VM functionality is * ever implemented (e.g. vendor-specific paravirtualization features). * Keep in sync with vm_guest_sysctl_names[]. */ enum VM_GUEST { VM_GUEST_NO = 0, VM_GUEST_VM, VM_GUEST_XEN, VM_GUEST_HV, VM_GUEST_VMWARE, VM_GUEST_KVM, VM_GUEST_BHYVE, VM_GUEST_VBOX, VM_GUEST_PARALLELS, VM_LAST }; -#ifdef INVARIANTS /* The option is always available */ -#define VNASSERT(exp, vp, msg) do { \ - if (__predict_false(!(exp))) { \ - vn_printf(vp, "VNASSERT failed: %s not true at %s:%d (%s)\n",\ - #exp, __FILE__, __LINE__, __func__); \ - kassert_panic msg; \ - } \ -} while (0) -#define VNPASS(exp, vp) do { \ - const char *_exp = #exp; \ - VNASSERT(exp, vp, ("condition %s not met at %s:%d (%s)", \ - _exp, __FILE__, __LINE__, __func__)); \ -} while (0) -#define __assert_unreachable() \ - panic("executing segment marked as unreachable at %s:%d (%s)\n", \ - __FILE__, __LINE__, __func__) -#else -#define VNASSERT(exp, vp, msg) do { \ -} while (0) -#define VNPASS(exp, vp) do { \ -} while (0) -#define __assert_unreachable() __unreachable() -#endif - -#ifndef CTASSERT /* Allow lint to override */ -#define CTASSERT(x) _Static_assert(x, "compile-time assertion failed") -#endif #endif /* KERNEL */ -/* - * These functions need to be declared before the KASSERT macro is invoked in - * !KASSERT_PANIC_OPTIONAL builds, so their declarations are sort of out of - * place compared to other function definitions in this header. On the other - * hand, this header is a bit disorganized anyway. - */ -void panic(const char *, ...) __dead2 __printflike(1, 2); -void vpanic(const char *, __va_list) __dead2 __printflike(1, 0); - - -#if defined(_STANDALONE) -struct ucred; -/* - * Until we have more experience with KASSERTS that are called - * from the boot loader, they are off. The bootloader does this - * a little differently than the kernel (we just call printf atm). - * we avoid most of the common functions in the boot loader, so - * declare printf() here too. - */ -int printf(const char *, ...) __printflike(1, 2); -# define kassert_panic printf -#else /* !_STANDALONE */ -# if defined(WITNESS) || defined(INVARIANT_SUPPORT) -# ifdef KASSERT_PANIC_OPTIONAL -void kassert_panic(const char *fmt, ...) __printflike(1, 2); -# else -# define kassert_panic panic -# endif /* KASSERT_PANIC_OPTIONAL */ -# endif /* defined(WITNESS) || defined(INVARIANT_SUPPORT) */ -#endif /* _STANDALONE */ - -#if defined(INVARIANTS) || defined(_STANDALONE) -#define KASSERT(exp,msg) do { \ - if (__predict_false(!(exp))) \ - kassert_panic msg; \ -} while (0) -#else /* !INVARIANTS && !_STANDALONE */ -#define KASSERT(exp,msg) do { \ -} while (0) -#endif /* INVARIANTS || _STANDALONE */ - -/* - * Helpful macros for quickly coming up with assertions with informative - * panic messages. - */ -#define MPASS(ex) MPASS4(ex, #ex, __FILE__, __LINE__) -#define MPASS2(ex, what) MPASS4(ex, what, __FILE__, __LINE__) -#define MPASS3(ex, file, line) MPASS4(ex, #ex, file, line) -#define MPASS4(ex, what, file, line) \ - KASSERT((ex), ("Assertion %s failed at %s:%d", what, file, line)) - /* * Align variables. */ #define __read_mostly __section(".data.read_mostly") #define __read_frequently __section(".data.read_frequently") #define __exclusive_cache_line __aligned(CACHE_LINE_SIZE) \ __section(".data.exclusive_cache_line") +#if defined(_STANDALONE) +struct ucred; +#endif + #ifdef _KERNEL #include /* MAXCPU */ #include /* curthread */ #include -/* - * Assert that a pointer can be loaded from memory atomically. - * - * This assertion enforces stronger alignment than necessary. For example, - * on some architectures, atomicity for unaligned loads will depend on - * whether or not the load spans multiple cache lines. - */ -#define ASSERT_ATOMIC_LOAD_PTR(var, msg) \ - KASSERT(sizeof(var) == sizeof(void *) && \ - ((uintptr_t)&(var) & (sizeof(void *) - 1)) == 0, msg) - -/* - * Assert that a thread is in critical(9) section. - */ -#define CRITICAL_ASSERT(td) \ - KASSERT((td)->td_critnest >= 1, ("Not in critical section")) - -/* - * If we have already panic'd and this is the thread that called - * panic(), then don't block on any mutexes but silently succeed. - * Otherwise, the kernel will deadlock since the scheduler isn't - * going to run the thread that holds any lock we need. - */ -#define SCHEDULER_STOPPED_TD(td) ({ \ - MPASS((td) == curthread); \ - __predict_false((td)->td_stopsched); \ -}) -#define SCHEDULER_STOPPED() SCHEDULER_STOPPED_TD(curthread) - extern int osreldate; extern const void *zero_region; /* address space maps to a zeroed page */ extern int unmapped_buf_allowed; #ifdef __LP64__ #define IOSIZE_MAX iosize_max() #define DEVFS_IOSIZE_MAX devfs_iosize_max() #else #define IOSIZE_MAX SSIZE_MAX #define DEVFS_IOSIZE_MAX SSIZE_MAX #endif /* * General function declarations. */ struct inpcb; struct lock_object; struct malloc_type; struct mtx; struct proc; struct socket; struct thread; struct tty; struct ucred; struct uio; struct _jmp_buf; struct trapframe; struct eventtimer; int setjmp(struct _jmp_buf *) __returns_twice; void longjmp(struct _jmp_buf *, int) __dead2; int dumpstatus(vm_offset_t addr, off_t count); int nullop(void); int eopnotsupp(void); int ureadc(int, struct uio *); void hashdestroy(void *, struct malloc_type *, u_long); void *hashinit(int count, struct malloc_type *type, u_long *hashmask); void *hashinit_flags(int count, struct malloc_type *type, u_long *hashmask, int flags); #define HASH_NOWAIT 0x00000001 #define HASH_WAITOK 0x00000002 void *phashinit(int count, struct malloc_type *type, u_long *nentries); void *phashinit_flags(int count, struct malloc_type *type, u_long *nentries, int flags); void g_waitidle(void); void cpu_flush_dcache(void *, size_t); void cpu_rootconf(void); void critical_enter_KBI(void); void critical_exit_KBI(void); void critical_exit_preempt(void); void init_param1(void); void init_param2(long physpages); void init_static_kenv(char *, size_t); void tablefull(const char *); /* * Allocate per-thread "current" state in the linuxkpi */ extern int (*lkpi_alloc_current)(struct thread *, int); int linux_alloc_current_noop(struct thread *, int); #if defined(KLD_MODULE) || defined(KTR_CRITICAL) || !defined(_KERNEL) || defined(GENOFFSET) #define critical_enter() critical_enter_KBI() #define critical_exit() critical_exit_KBI() #else static __inline void critical_enter(void) { struct thread_lite *td; td = (struct thread_lite *)curthread; td->td_critnest++; atomic_interrupt_fence(); } static __inline void critical_exit(void) { struct thread_lite *td; td = (struct thread_lite *)curthread; KASSERT(td->td_critnest != 0, ("critical_exit: td_critnest == 0")); atomic_interrupt_fence(); td->td_critnest--; atomic_interrupt_fence(); if (__predict_false(td->td_owepreempt)) critical_exit_preempt(); } #endif #ifdef EARLY_PRINTF typedef void early_putc_t(int ch); extern early_putc_t *early_putc; #endif int kvprintf(char const *, void (*)(int, void*), void *, int, __va_list) __printflike(1, 0); void log(int, const char *, ...) __printflike(2, 3); void log_console(struct uio *); void vlog(int, const char *, __va_list) __printflike(2, 0); int asprintf(char **ret, struct malloc_type *mtp, const char *format, ...) __printflike(3, 4); int printf(const char *, ...) __printflike(1, 2); int snprintf(char *, size_t, const char *, ...) __printflike(3, 4); int sprintf(char *buf, const char *, ...) __printflike(2, 3); int uprintf(const char *, ...) __printflike(1, 2); int vprintf(const char *, __va_list) __printflike(1, 0); int vasprintf(char **ret, struct malloc_type *mtp, const char *format, __va_list ap) __printflike(3, 0); int vsnprintf(char *, size_t, const char *, __va_list) __printflike(3, 0); int vsnrprintf(char *, size_t, int, const char *, __va_list) __printflike(4, 0); int vsprintf(char *buf, const char *, __va_list) __printflike(2, 0); int sscanf(const char *, char const * _Nonnull, ...) __scanflike(2, 3); int vsscanf(const char * _Nonnull, char const * _Nonnull, __va_list) __scanflike(2, 0); long strtol(const char *, char **, int); u_long strtoul(const char *, char **, int); quad_t strtoq(const char *, char **, int); u_quad_t strtouq(const char *, char **, int); void tprintf(struct proc *p, int pri, const char *, ...) __printflike(3, 4); void vtprintf(struct proc *, int, const char *, __va_list) __printflike(3, 0); void hexdump(const void *ptr, int length, const char *hdr, int flags); #define HD_COLUMN_MASK 0xff #define HD_DELIM_MASK 0xff00 #define HD_OMIT_COUNT (1 << 16) #define HD_OMIT_HEX (1 << 17) #define HD_OMIT_CHARS (1 << 18) #define ovbcopy(f, t, l) bcopy((f), (t), (l)) void bcopy(const void * _Nonnull from, void * _Nonnull to, size_t len); void bzero(void * _Nonnull buf, size_t len); void explicit_bzero(void * _Nonnull, size_t); int bcmp(const void *b1, const void *b2, size_t len); void *memset(void * _Nonnull buf, int c, size_t len); void *memcpy(void * _Nonnull to, const void * _Nonnull from, size_t len); void *memmove(void * _Nonnull dest, const void * _Nonnull src, size_t n); int memcmp(const void *b1, const void *b2, size_t len); #if defined(KASAN) #define SAN_PREFIX kasan_ #elif defined(KCSAN) #define SAN_PREFIX kcsan_ #endif #ifdef SAN_PREFIX #define SAN_INTERCEPTOR(func) __CONCAT(SAN_PREFIX, func) void *SAN_INTERCEPTOR(memset)(void *, int, size_t); void *SAN_INTERCEPTOR(memcpy)(void *, const void *, size_t); void *SAN_INTERCEPTOR(memmove)(void *, const void *, size_t); int SAN_INTERCEPTOR(memcmp)(const void *, const void *, size_t); #ifndef SAN_RUNTIME #define bcopy(from, to, len) SAN_INTERCEPTOR(memmove)((to), (from), (len)) #define bzero(buf, len) SAN_INTERCEPTOR(memset)((buf), 0, (len)) #define bcmp(b1, b2, len) SAN_INTERCEPTOR(memcmp)((b1), (b2), (len)) #define memset(buf, c, len) SAN_INTERCEPTOR(memset)((buf), (c), (len)) #define memcpy(to, from, len) SAN_INTERCEPTOR(memcpy)((to), (from), (len)) #define memmove(dest, src, n) SAN_INTERCEPTOR(memmove)((dest), (src), (n)) #define memcmp(b1, b2, len) SAN_INTERCEPTOR(memcmp)((b1), (b2), (len)) #endif /* !SAN_RUNTIME */ #else #define bcopy(from, to, len) __builtin_memmove((to), (from), (len)) #define bzero(buf, len) __builtin_memset((buf), 0, (len)) #define bcmp(b1, b2, len) __builtin_memcmp((b1), (b2), (len)) #define memset(buf, c, len) __builtin_memset((buf), (c), (len)) #define memcpy(to, from, len) __builtin_memcpy((to), (from), (len)) #define memmove(dest, src, n) __builtin_memmove((dest), (src), (n)) #define memcmp(b1, b2, len) __builtin_memcmp((b1), (b2), (len)) #endif /* !SAN_PREFIX */ void *memset_early(void * _Nonnull buf, int c, size_t len); #define bzero_early(buf, len) memset_early((buf), 0, (len)) void *memcpy_early(void * _Nonnull to, const void * _Nonnull from, size_t len); void *memmove_early(void * _Nonnull dest, const void * _Nonnull src, size_t n); #define bcopy_early(from, to, len) memmove_early((to), (from), (len)) #define copystr(src, dst, len, outlen) ({ \ size_t __r, __len, *__outlen; \ \ __len = (len); \ __outlen = (outlen); \ __r = strlcpy((dst), (src), __len); \ if (__outlen != NULL) \ *__outlen = ((__r >= __len) ? __len : __r + 1); \ ((__r >= __len) ? ENAMETOOLONG : 0); \ }) int copyinstr(const void * __restrict udaddr, void * _Nonnull __restrict kaddr, size_t len, size_t * __restrict lencopied); int copyin(const void * __restrict udaddr, void * _Nonnull __restrict kaddr, size_t len); int copyin_nofault(const void * __restrict udaddr, void * _Nonnull __restrict kaddr, size_t len); int copyout(const void * _Nonnull __restrict kaddr, void * __restrict udaddr, size_t len); int copyout_nofault(const void * _Nonnull __restrict kaddr, void * __restrict udaddr, size_t len); #ifdef SAN_PREFIX int SAN_INTERCEPTOR(copyin)(const void *, void *, size_t); int SAN_INTERCEPTOR(copyinstr)(const void *, void *, size_t, size_t *); int SAN_INTERCEPTOR(copyout)(const void *, void *, size_t); #ifndef SAN_RUNTIME #define copyin(u, k, l) SAN_INTERCEPTOR(copyin)((u), (k), (l)) #define copyinstr(u, k, l, lc) SAN_INTERCEPTOR(copyinstr)((u), (k), (l), (lc)) #define copyout(k, u, l) SAN_INTERCEPTOR(copyout)((k), (u), (l)) #endif /* !SAN_RUNTIME */ #endif /* SAN_PREFIX */ int fubyte(volatile const void *base); long fuword(volatile const void *base); int fuword16(volatile const void *base); int32_t fuword32(volatile const void *base); int64_t fuword64(volatile const void *base); int fueword(volatile const void *base, long *val); int fueword32(volatile const void *base, int32_t *val); int fueword64(volatile const void *base, int64_t *val); int subyte(volatile void *base, int byte); int suword(volatile void *base, long word); int suword16(volatile void *base, int word); int suword32(volatile void *base, int32_t word); int suword64(volatile void *base, int64_t word); uint32_t casuword32(volatile uint32_t *base, uint32_t oldval, uint32_t newval); u_long casuword(volatile u_long *p, u_long oldval, u_long newval); int casueword32(volatile uint32_t *base, uint32_t oldval, uint32_t *oldvalp, uint32_t newval); int casueword(volatile u_long *p, u_long oldval, u_long *oldvalp, u_long newval); void realitexpire(void *); int sysbeep(int hertz, sbintime_t duration); void hardclock(int cnt, int usermode); void hardclock_sync(int cpu); void softclock(void *); void statclock(int cnt, int usermode); void profclock(int cnt, int usermode, uintfptr_t pc); int hardclockintr(void); void startprofclock(struct proc *); void stopprofclock(struct proc *); void cpu_startprofclock(void); void cpu_stopprofclock(void); void suspendclock(void); void resumeclock(void); sbintime_t cpu_idleclock(void); void cpu_activeclock(void); void cpu_new_callout(int cpu, sbintime_t bt, sbintime_t bt_opt); void cpu_et_frequency(struct eventtimer *et, uint64_t newfreq); extern int cpu_disable_c2_sleep; extern int cpu_disable_c3_sleep; char *kern_getenv(const char *name); void freeenv(char *env); int getenv_int(const char *name, int *data); int getenv_uint(const char *name, unsigned int *data); int getenv_long(const char *name, long *data); int getenv_ulong(const char *name, unsigned long *data); int getenv_string(const char *name, char *data, int size); int getenv_int64(const char *name, int64_t *data); int getenv_uint64(const char *name, uint64_t *data); int getenv_quad(const char *name, quad_t *data); int getenv_bool(const char *name, bool *data); bool getenv_is_true(const char *name); bool getenv_is_false(const char *name); int kern_setenv(const char *name, const char *value); int kern_unsetenv(const char *name); int testenv(const char *name); int getenv_array(const char *name, void *data, int size, int *psize, int type_size, bool allow_signed); #define GETENV_UNSIGNED false /* negative numbers not allowed */ #define GETENV_SIGNED true /* negative numbers allowed */ typedef uint64_t (cpu_tick_f)(void); void set_cputicker(cpu_tick_f *func, uint64_t freq, unsigned var); extern cpu_tick_f *cpu_ticks; uint64_t cpu_tickrate(void); uint64_t cputick2usec(uint64_t tick); #include /* Initialize the world */ void consinit(void); void cpu_initclocks(void); void cpu_initclocks_bsp(void); void cpu_initclocks_ap(void); void usrinfoinit(void); /* Finalize the world */ void kern_reboot(int) __dead2; void shutdown_nice(int); /* Stubs for obsolete functions that used to be for interrupt management */ static __inline intrmask_t splhigh(void) { return 0; } static __inline intrmask_t splimp(void) { return 0; } static __inline intrmask_t splnet(void) { return 0; } static __inline intrmask_t spltty(void) { return 0; } static __inline void splx(intrmask_t ipl __unused) { return; } /* * Common `proc' functions are declared here so that proc.h can be included * less often. */ int _sleep(const void * _Nonnull chan, struct lock_object *lock, int pri, const char *wmesg, sbintime_t sbt, sbintime_t pr, int flags); #define msleep(chan, mtx, pri, wmesg, timo) \ _sleep((chan), &(mtx)->lock_object, (pri), (wmesg), \ tick_sbt * (timo), 0, C_HARDCLOCK) #define msleep_sbt(chan, mtx, pri, wmesg, bt, pr, flags) \ _sleep((chan), &(mtx)->lock_object, (pri), (wmesg), (bt), (pr), \ (flags)) int msleep_spin_sbt(const void * _Nonnull chan, struct mtx *mtx, const char *wmesg, sbintime_t sbt, sbintime_t pr, int flags); #define msleep_spin(chan, mtx, wmesg, timo) \ msleep_spin_sbt((chan), (mtx), (wmesg), tick_sbt * (timo), \ 0, C_HARDCLOCK) int pause_sbt(const char *wmesg, sbintime_t sbt, sbintime_t pr, int flags); #define pause(wmesg, timo) \ pause_sbt((wmesg), tick_sbt * (timo), 0, C_HARDCLOCK) #define pause_sig(wmesg, timo) \ pause_sbt((wmesg), tick_sbt * (timo), 0, C_HARDCLOCK | C_CATCH) #define tsleep(chan, pri, wmesg, timo) \ _sleep((chan), NULL, (pri), (wmesg), tick_sbt * (timo), \ 0, C_HARDCLOCK) #define tsleep_sbt(chan, pri, wmesg, bt, pr, flags) \ _sleep((chan), NULL, (pri), (wmesg), (bt), (pr), (flags)) void wakeup(const void *chan); void wakeup_one(const void *chan); void wakeup_any(const void *chan); /* * Common `struct cdev *' stuff are declared here to avoid #include poisoning */ struct cdev; dev_t dev2udev(struct cdev *x); const char *devtoname(struct cdev *cdev); #ifdef __LP64__ size_t devfs_iosize_max(void); size_t iosize_max(void); #endif int poll_no_poll(int events); /* XXX: Should be void nanodelay(u_int nsec); */ void DELAY(int usec); /* Root mount holdback API */ struct root_hold_token { int flags; const char *who; TAILQ_ENTRY(root_hold_token) list; }; struct root_hold_token *root_mount_hold(const char *identifier); void root_mount_hold_token(const char *identifier, struct root_hold_token *h); void root_mount_rel(struct root_hold_token *h); int root_mounted(void); /* * Unit number allocation API. (kern/subr_unit.c) */ struct unrhdr; struct unrhdr *new_unrhdr(int low, int high, struct mtx *mutex); void init_unrhdr(struct unrhdr *uh, int low, int high, struct mtx *mutex); void delete_unrhdr(struct unrhdr *uh); void clear_unrhdr(struct unrhdr *uh); void clean_unrhdr(struct unrhdr *uh); void clean_unrhdrl(struct unrhdr *uh); int alloc_unr(struct unrhdr *uh); int alloc_unr_specific(struct unrhdr *uh, u_int item); int alloc_unrl(struct unrhdr *uh); void free_unr(struct unrhdr *uh, u_int item); #ifndef __LP64__ #define UNR64_LOCKED #endif struct unrhdr64 { uint64_t counter; }; static __inline void new_unrhdr64(struct unrhdr64 *unr64, uint64_t low) { unr64->counter = low; } #ifdef UNR64_LOCKED uint64_t alloc_unr64(struct unrhdr64 *); #else static __inline uint64_t alloc_unr64(struct unrhdr64 *unr64) { return (atomic_fetchadd_64(&unr64->counter, 1)); } #endif void intr_prof_stack_use(struct thread *td, struct trapframe *frame); void counted_warning(unsigned *counter, const char *msg); /* * APIs to manage deprecation and obsolescence. */ void _gone_in(int major, const char *msg); void _gone_in_dev(device_t dev, int major, const char *msg); #ifdef NO_OBSOLETE_CODE #define __gone_ok(m, msg) \ _Static_assert(m < P_OSREL_MAJOR(__FreeBSD_version)), \ "Obsolete code: " msg); #else #define __gone_ok(m, msg) #endif #define gone_in(major, msg) __gone_ok(major, msg) _gone_in(major, msg) #define gone_in_dev(dev, major, msg) __gone_ok(major, msg) _gone_in_dev(dev, major, msg) #if defined(INVARIANTS) || defined(WITNESS) #define __diagused #else #define __diagused __unused #endif #endif /* _KERNEL */ __NULLABILITY_PRAGMA_POP #endif /* !_SYS_SYSTM_H_ */